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add s3

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kekskurse 2023-10-14 15:07:58 +02:00
parent aa2c1450c4
commit 748e042ada
246 changed files with 123883 additions and 2 deletions
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16
Readme.md
View file

@ -34,7 +34,10 @@ Config parameter:
### SFTP (alpha)
Currenlty just with username/password
issues:
* Currenlty just with username/password
* untestet
Config parameter:
@ -43,7 +46,16 @@ Config parameter:
* password: Password
* addr: Server and Port (server:port)
### B2 / Backblaze
### S3
issues:
* untestet
Config Parameter:
*
## Config

2
go.mod
View file

@ -3,6 +3,7 @@ module idun
go 1.21
require (
github.com/aws/aws-sdk-go v1.45.25
github.com/pkg/sftp v1.13.6
github.com/rs/zerolog v1.31.0
github.com/stretchr/testify v1.8.4
@ -14,6 +15,7 @@ require (
require (
github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/jmespath/go-jmespath v0.4.0 // indirect
github.com/kr/fs v0.1.0 // indirect
github.com/mattn/go-colorable v0.1.13 // indirect
github.com/mattn/go-isatty v0.0.19 // indirect

12
go.sum
View file

@ -1,3 +1,5 @@
github.com/aws/aws-sdk-go v1.45.25 h1:c4fLlh5sLdK2DCRTY1z0hyuJZU4ygxX8m1FswL6/nF4=
github.com/aws/aws-sdk-go v1.45.25/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
@ -5,6 +7,10 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
@ -43,6 +49,8 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLL
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -65,12 +73,16 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

4
main.go
View file

@ -278,6 +278,10 @@ func getFileSystem(driver string, config map[string]string) (storage.Storage, er
case "sftp":
sftp := storage.SFTP{Config: config}
return sftp, nil
case "s3":
s3 := storage.S3FileSystem{Config: config}
return s3, nil
}
return nil, errors.New("driver not found")

96
pkg/storage/s3.go Normal file
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@ -0,0 +1,96 @@
package storage
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
)
type S3FileSystem struct {
Config map[string]string
}
func (l S3FileSystem) ListFiles() ([]File, error) {
s3Config := &aws.Config{
Credentials: credentials.NewStaticCredentials(l.Config["keyid"], l.Config["applicationkey"], ""),
Endpoint: aws.String(l.Config["endpoint"]),
Region: aws.String(l.Config["region"]),
S3ForcePathStyle: aws.Bool(true),
}
newSession, err := session.NewSession(s3Config)
if err != nil {
return nil, err
}
s3Client := s3.New(newSession)
lc := s3.ListObjectsInput{
Bucket: aws.String(l.Config["bucket"]),
Delimiter: nil,
EncodingType: nil,
ExpectedBucketOwner: nil,
Marker: nil,
MaxKeys: nil,
OptionalObjectAttributes: nil,
Prefix: aws.String(l.Config["prefix"]),
RequestPayer: nil,
}
objects, err := s3Client.ListObjects(&lc)
if err != nil {
return nil, err
}
fileList := []File{}
for _, o := range objects.Contents {
f := GeneralFile{
name: *o.Key,
time: *o.LastModified,
}
fileList = append(fileList, f)
}
return fileList, nil
}
func (I S3FileSystem) Delete(files []File) error {
s3Config := &aws.Config{
Credentials: credentials.NewStaticCredentials(I.Config["keyid"], I.Config["applicationkey"], ""),
Endpoint: aws.String(I.Config["endpoint"]),
Region: aws.String(I.Config["region"]),
S3ForcePathStyle: aws.Bool(true),
}
newSession, err := session.NewSession(s3Config)
if err != nil {
return err
}
s3Client := s3.New(newSession)
for _, f := range files {
name, err := f.GetName()
if err != nil {
return err
}
doc := s3.DeleteObjectInput{
Bucket: aws.String(I.Config["bucket"]),
BypassGovernanceRetention: nil,
ExpectedBucketOwner: nil,
Key: aws.String(name),
MFA: nil,
RequestPayer: nil,
VersionId: nil,
}
_, err = s3Client.DeleteObject(&doc)
if err != nil {
return err
}
}
return nil
}

202
vendor/github.com/aws/aws-sdk-go/LICENSE.txt generated vendored Normal file
View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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"License" shall mean the terms and conditions for use, reproduction,
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You may add Your own copyright statement to Your modifications and
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5. Submission of Contributions. Unless You explicitly state otherwise,
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the terms of any separate license agreement you may have executed
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6. Trademarks. This License does not grant permission to use the trade
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7. Disclaimer of Warranty. Unless required by applicable law or
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unless required by applicable law (such as deliberate and grossly
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on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
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3
vendor/github.com/aws/aws-sdk-go/NOTICE.txt generated vendored Normal file
View file

@ -0,0 +1,3 @@
AWS SDK for Go
Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
Copyright 2014-2015 Stripe, Inc.

93
vendor/github.com/aws/aws-sdk-go/aws/arn/arn.go generated vendored Normal file
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@ -0,0 +1,93 @@
// Package arn provides a parser for interacting with Amazon Resource Names.
package arn
import (
"errors"
"strings"
)
const (
arnDelimiter = ":"
arnSections = 6
arnPrefix = "arn:"
// zero-indexed
sectionPartition = 1
sectionService = 2
sectionRegion = 3
sectionAccountID = 4
sectionResource = 5
// errors
invalidPrefix = "arn: invalid prefix"
invalidSections = "arn: not enough sections"
)
// ARN captures the individual fields of an Amazon Resource Name.
// See http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html for more information.
type ARN struct {
// The partition that the resource is in. For standard AWS regions, the partition is "aws". If you have resources in
// other partitions, the partition is "aws-partitionname". For example, the partition for resources in the China
// (Beijing) region is "aws-cn".
Partition string
// The service namespace that identifies the AWS product (for example, Amazon S3, IAM, or Amazon RDS). For a list of
// namespaces, see
// http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces.
Service string
// The region the resource resides in. Note that the ARNs for some resources do not require a region, so this
// component might be omitted.
Region string
// The ID of the AWS account that owns the resource, without the hyphens. For example, 123456789012. Note that the
// ARNs for some resources don't require an account number, so this component might be omitted.
AccountID string
// The content of this part of the ARN varies by service. It often includes an indicator of the type of resource —
// for example, an IAM user or Amazon RDS database - followed by a slash (/) or a colon (:), followed by the
// resource name itself. Some services allows paths for resource names, as described in
// http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#arns-paths.
Resource string
}
// Parse parses an ARN into its constituent parts.
//
// Some example ARNs:
// arn:aws:elasticbeanstalk:us-east-1:123456789012:environment/My App/MyEnvironment
// arn:aws:iam::123456789012:user/David
// arn:aws:rds:eu-west-1:123456789012:db:mysql-db
// arn:aws:s3:::my_corporate_bucket/exampleobject.png
func Parse(arn string) (ARN, error) {
if !strings.HasPrefix(arn, arnPrefix) {
return ARN{}, errors.New(invalidPrefix)
}
sections := strings.SplitN(arn, arnDelimiter, arnSections)
if len(sections) != arnSections {
return ARN{}, errors.New(invalidSections)
}
return ARN{
Partition: sections[sectionPartition],
Service: sections[sectionService],
Region: sections[sectionRegion],
AccountID: sections[sectionAccountID],
Resource: sections[sectionResource],
}, nil
}
// IsARN returns whether the given string is an ARN by looking for
// whether the string starts with "arn:" and contains the correct number
// of sections delimited by colons(:).
func IsARN(arn string) bool {
return strings.HasPrefix(arn, arnPrefix) && strings.Count(arn, ":") >= arnSections-1
}
// String returns the canonical representation of the ARN
func (arn ARN) String() string {
return arnPrefix +
arn.Partition + arnDelimiter +
arn.Service + arnDelimiter +
arn.Region + arnDelimiter +
arn.AccountID + arnDelimiter +
arn.Resource
}

50
vendor/github.com/aws/aws-sdk-go/aws/auth/bearer/token.go generated vendored Normal file
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@ -0,0 +1,50 @@
package bearer
import (
"github.com/aws/aws-sdk-go/aws"
"time"
)
// Token provides a type wrapping a bearer token and expiration metadata.
type Token struct {
Value string
CanExpire bool
Expires time.Time
}
// Expired returns if the token's Expires time is before or equal to the time
// provided. If CanExpire is false, Expired will always return false.
func (t Token) Expired(now time.Time) bool {
if !t.CanExpire {
return false
}
now = now.Round(0)
return now.Equal(t.Expires) || now.After(t.Expires)
}
// TokenProvider provides interface for retrieving bearer tokens.
type TokenProvider interface {
RetrieveBearerToken(aws.Context) (Token, error)
}
// TokenProviderFunc provides a helper utility to wrap a function as a type
// that implements the TokenProvider interface.
type TokenProviderFunc func(aws.Context) (Token, error)
// RetrieveBearerToken calls the wrapped function, returning the Token or
// error.
func (fn TokenProviderFunc) RetrieveBearerToken(ctx aws.Context) (Token, error) {
return fn(ctx)
}
// StaticTokenProvider provides a utility for wrapping a static bearer token
// value within an implementation of a token provider.
type StaticTokenProvider struct {
Token Token
}
// RetrieveBearerToken returns the static token specified.
func (s StaticTokenProvider) RetrieveBearerToken(aws.Context) (Token, error) {
return s.Token, nil
}

164
vendor/github.com/aws/aws-sdk-go/aws/awserr/error.go generated vendored Normal file
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@ -0,0 +1,164 @@
// Package awserr represents API error interface accessors for the SDK.
package awserr
// An Error wraps lower level errors with code, message and an original error.
// The underlying concrete error type may also satisfy other interfaces which
// can be to used to obtain more specific information about the error.
//
// Calling Error() or String() will always include the full information about
// an error based on its underlying type.
//
// Example:
//
// output, err := s3manage.Upload(svc, input, opts)
// if err != nil {
// if awsErr, ok := err.(awserr.Error); ok {
// // Get error details
// log.Println("Error:", awsErr.Code(), awsErr.Message())
//
// // Prints out full error message, including original error if there was one.
// log.Println("Error:", awsErr.Error())
//
// // Get original error
// if origErr := awsErr.OrigErr(); origErr != nil {
// // operate on original error.
// }
// } else {
// fmt.Println(err.Error())
// }
// }
//
type Error interface {
// Satisfy the generic error interface.
error
// Returns the short phrase depicting the classification of the error.
Code() string
// Returns the error details message.
Message() string
// Returns the original error if one was set. Nil is returned if not set.
OrigErr() error
}
// BatchError is a batch of errors which also wraps lower level errors with
// code, message, and original errors. Calling Error() will include all errors
// that occurred in the batch.
//
// Deprecated: Replaced with BatchedErrors. Only defined for backwards
// compatibility.
type BatchError interface {
// Satisfy the generic error interface.
error
// Returns the short phrase depicting the classification of the error.
Code() string
// Returns the error details message.
Message() string
// Returns the original error if one was set. Nil is returned if not set.
OrigErrs() []error
}
// BatchedErrors is a batch of errors which also wraps lower level errors with
// code, message, and original errors. Calling Error() will include all errors
// that occurred in the batch.
//
// Replaces BatchError
type BatchedErrors interface {
// Satisfy the base Error interface.
Error
// Returns the original error if one was set. Nil is returned if not set.
OrigErrs() []error
}
// New returns an Error object described by the code, message, and origErr.
//
// If origErr satisfies the Error interface it will not be wrapped within a new
// Error object and will instead be returned.
func New(code, message string, origErr error) Error {
var errs []error
if origErr != nil {
errs = append(errs, origErr)
}
return newBaseError(code, message, errs)
}
// NewBatchError returns an BatchedErrors with a collection of errors as an
// array of errors.
func NewBatchError(code, message string, errs []error) BatchedErrors {
return newBaseError(code, message, errs)
}
// A RequestFailure is an interface to extract request failure information from
// an Error such as the request ID of the failed request returned by a service.
// RequestFailures may not always have a requestID value if the request failed
// prior to reaching the service such as a connection error.
//
// Example:
//
// output, err := s3manage.Upload(svc, input, opts)
// if err != nil {
// if reqerr, ok := err.(RequestFailure); ok {
// log.Println("Request failed", reqerr.Code(), reqerr.Message(), reqerr.RequestID())
// } else {
// log.Println("Error:", err.Error())
// }
// }
//
// Combined with awserr.Error:
//
// output, err := s3manage.Upload(svc, input, opts)
// if err != nil {
// if awsErr, ok := err.(awserr.Error); ok {
// // Generic AWS Error with Code, Message, and original error (if any)
// fmt.Println(awsErr.Code(), awsErr.Message(), awsErr.OrigErr())
//
// if reqErr, ok := err.(awserr.RequestFailure); ok {
// // A service error occurred
// fmt.Println(reqErr.StatusCode(), reqErr.RequestID())
// }
// } else {
// fmt.Println(err.Error())
// }
// }
//
type RequestFailure interface {
Error
// The status code of the HTTP response.
StatusCode() int
// The request ID returned by the service for a request failure. This will
// be empty if no request ID is available such as the request failed due
// to a connection error.
RequestID() string
}
// NewRequestFailure returns a wrapped error with additional information for
// request status code, and service requestID.
//
// Should be used to wrap all request which involve service requests. Even if
// the request failed without a service response, but had an HTTP status code
// that may be meaningful.
func NewRequestFailure(err Error, statusCode int, reqID string) RequestFailure {
return newRequestError(err, statusCode, reqID)
}
// UnmarshalError provides the interface for the SDK failing to unmarshal data.
type UnmarshalError interface {
awsError
Bytes() []byte
}
// NewUnmarshalError returns an initialized UnmarshalError error wrapper adding
// the bytes that fail to unmarshal to the error.
func NewUnmarshalError(err error, msg string, bytes []byte) UnmarshalError {
return &unmarshalError{
awsError: New("UnmarshalError", msg, err),
bytes: bytes,
}
}

221
vendor/github.com/aws/aws-sdk-go/aws/awserr/types.go generated vendored Normal file
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package awserr
import (
"encoding/hex"
"fmt"
)
// SprintError returns a string of the formatted error code.
//
// Both extra and origErr are optional. If they are included their lines
// will be added, but if they are not included their lines will be ignored.
func SprintError(code, message, extra string, origErr error) string {
msg := fmt.Sprintf("%s: %s", code, message)
if extra != "" {
msg = fmt.Sprintf("%s\n\t%s", msg, extra)
}
if origErr != nil {
msg = fmt.Sprintf("%s\ncaused by: %s", msg, origErr.Error())
}
return msg
}
// A baseError wraps the code and message which defines an error. It also
// can be used to wrap an original error object.
//
// Should be used as the root for errors satisfying the awserr.Error. Also
// for any error which does not fit into a specific error wrapper type.
type baseError struct {
// Classification of error
code string
// Detailed information about error
message string
// Optional original error this error is based off of. Allows building
// chained errors.
errs []error
}
// newBaseError returns an error object for the code, message, and errors.
//
// code is a short no whitespace phrase depicting the classification of
// the error that is being created.
//
// message is the free flow string containing detailed information about the
// error.
//
// origErrs is the error objects which will be nested under the new errors to
// be returned.
func newBaseError(code, message string, origErrs []error) *baseError {
b := &baseError{
code: code,
message: message,
errs: origErrs,
}
return b
}
// Error returns the string representation of the error.
//
// See ErrorWithExtra for formatting.
//
// Satisfies the error interface.
func (b baseError) Error() string {
size := len(b.errs)
if size > 0 {
return SprintError(b.code, b.message, "", errorList(b.errs))
}
return SprintError(b.code, b.message, "", nil)
}
// String returns the string representation of the error.
// Alias for Error to satisfy the stringer interface.
func (b baseError) String() string {
return b.Error()
}
// Code returns the short phrase depicting the classification of the error.
func (b baseError) Code() string {
return b.code
}
// Message returns the error details message.
func (b baseError) Message() string {
return b.message
}
// OrigErr returns the original error if one was set. Nil is returned if no
// error was set. This only returns the first element in the list. If the full
// list is needed, use BatchedErrors.
func (b baseError) OrigErr() error {
switch len(b.errs) {
case 0:
return nil
case 1:
return b.errs[0]
default:
if err, ok := b.errs[0].(Error); ok {
return NewBatchError(err.Code(), err.Message(), b.errs[1:])
}
return NewBatchError("BatchedErrors",
"multiple errors occurred", b.errs)
}
}
// OrigErrs returns the original errors if one was set. An empty slice is
// returned if no error was set.
func (b baseError) OrigErrs() []error {
return b.errs
}
// So that the Error interface type can be included as an anonymous field
// in the requestError struct and not conflict with the error.Error() method.
type awsError Error
// A requestError wraps a request or service error.
//
// Composed of baseError for code, message, and original error.
type requestError struct {
awsError
statusCode int
requestID string
bytes []byte
}
// newRequestError returns a wrapped error with additional information for
// request status code, and service requestID.
//
// Should be used to wrap all request which involve service requests. Even if
// the request failed without a service response, but had an HTTP status code
// that may be meaningful.
//
// Also wraps original errors via the baseError.
func newRequestError(err Error, statusCode int, requestID string) *requestError {
return &requestError{
awsError: err,
statusCode: statusCode,
requestID: requestID,
}
}
// Error returns the string representation of the error.
// Satisfies the error interface.
func (r requestError) Error() string {
extra := fmt.Sprintf("status code: %d, request id: %s",
r.statusCode, r.requestID)
return SprintError(r.Code(), r.Message(), extra, r.OrigErr())
}
// String returns the string representation of the error.
// Alias for Error to satisfy the stringer interface.
func (r requestError) String() string {
return r.Error()
}
// StatusCode returns the wrapped status code for the error
func (r requestError) StatusCode() int {
return r.statusCode
}
// RequestID returns the wrapped requestID
func (r requestError) RequestID() string {
return r.requestID
}
// OrigErrs returns the original errors if one was set. An empty slice is
// returned if no error was set.
func (r requestError) OrigErrs() []error {
if b, ok := r.awsError.(BatchedErrors); ok {
return b.OrigErrs()
}
return []error{r.OrigErr()}
}
type unmarshalError struct {
awsError
bytes []byte
}
// Error returns the string representation of the error.
// Satisfies the error interface.
func (e unmarshalError) Error() string {
extra := hex.Dump(e.bytes)
return SprintError(e.Code(), e.Message(), extra, e.OrigErr())
}
// String returns the string representation of the error.
// Alias for Error to satisfy the stringer interface.
func (e unmarshalError) String() string {
return e.Error()
}
// Bytes returns the bytes that failed to unmarshal.
func (e unmarshalError) Bytes() []byte {
return e.bytes
}
// An error list that satisfies the golang interface
type errorList []error
// Error returns the string representation of the error.
//
// Satisfies the error interface.
func (e errorList) Error() string {
msg := ""
// How do we want to handle the array size being zero
if size := len(e); size > 0 {
for i := 0; i < size; i++ {
msg += e[i].Error()
// We check the next index to see if it is within the slice.
// If it is, then we append a newline. We do this, because unit tests
// could be broken with the additional '\n'
if i+1 < size {
msg += "\n"
}
}
}
return msg
}

108
vendor/github.com/aws/aws-sdk-go/aws/awsutil/copy.go generated vendored Normal file
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package awsutil
import (
"io"
"reflect"
"time"
)
// Copy deeply copies a src structure to dst. Useful for copying request and
// response structures.
//
// Can copy between structs of different type, but will only copy fields which
// are assignable, and exist in both structs. Fields which are not assignable,
// or do not exist in both structs are ignored.
func Copy(dst, src interface{}) {
dstval := reflect.ValueOf(dst)
if !dstval.IsValid() {
panic("Copy dst cannot be nil")
}
rcopy(dstval, reflect.ValueOf(src), true)
}
// CopyOf returns a copy of src while also allocating the memory for dst.
// src must be a pointer type or this operation will fail.
func CopyOf(src interface{}) (dst interface{}) {
dsti := reflect.New(reflect.TypeOf(src).Elem())
dst = dsti.Interface()
rcopy(dsti, reflect.ValueOf(src), true)
return
}
// rcopy performs a recursive copy of values from the source to destination.
//
// root is used to skip certain aspects of the copy which are not valid
// for the root node of a object.
func rcopy(dst, src reflect.Value, root bool) {
if !src.IsValid() {
return
}
switch src.Kind() {
case reflect.Ptr:
if _, ok := src.Interface().(io.Reader); ok {
if dst.Kind() == reflect.Ptr && dst.Elem().CanSet() {
dst.Elem().Set(src)
} else if dst.CanSet() {
dst.Set(src)
}
} else {
e := src.Type().Elem()
if dst.CanSet() && !src.IsNil() {
if _, ok := src.Interface().(*time.Time); !ok {
dst.Set(reflect.New(e))
} else {
tempValue := reflect.New(e)
tempValue.Elem().Set(src.Elem())
// Sets time.Time's unexported values
dst.Set(tempValue)
}
}
if src.Elem().IsValid() {
// Keep the current root state since the depth hasn't changed
rcopy(dst.Elem(), src.Elem(), root)
}
}
case reflect.Struct:
t := dst.Type()
for i := 0; i < t.NumField(); i++ {
name := t.Field(i).Name
srcVal := src.FieldByName(name)
dstVal := dst.FieldByName(name)
if srcVal.IsValid() && dstVal.CanSet() {
rcopy(dstVal, srcVal, false)
}
}
case reflect.Slice:
if src.IsNil() {
break
}
s := reflect.MakeSlice(src.Type(), src.Len(), src.Cap())
dst.Set(s)
for i := 0; i < src.Len(); i++ {
rcopy(dst.Index(i), src.Index(i), false)
}
case reflect.Map:
if src.IsNil() {
break
}
s := reflect.MakeMap(src.Type())
dst.Set(s)
for _, k := range src.MapKeys() {
v := src.MapIndex(k)
v2 := reflect.New(v.Type()).Elem()
rcopy(v2, v, false)
dst.SetMapIndex(k, v2)
}
default:
// Assign the value if possible. If its not assignable, the value would
// need to be converted and the impact of that may be unexpected, or is
// not compatible with the dst type.
if src.Type().AssignableTo(dst.Type()) {
dst.Set(src)
}
}
}

27
vendor/github.com/aws/aws-sdk-go/aws/awsutil/equal.go generated vendored Normal file
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package awsutil
import (
"reflect"
)
// DeepEqual returns if the two values are deeply equal like reflect.DeepEqual.
// In addition to this, this method will also dereference the input values if
// possible so the DeepEqual performed will not fail if one parameter is a
// pointer and the other is not.
//
// DeepEqual will not perform indirection of nested values of the input parameters.
func DeepEqual(a, b interface{}) bool {
ra := reflect.Indirect(reflect.ValueOf(a))
rb := reflect.Indirect(reflect.ValueOf(b))
if raValid, rbValid := ra.IsValid(), rb.IsValid(); !raValid && !rbValid {
// If the elements are both nil, and of the same type they are equal
// If they are of different types they are not equal
return reflect.TypeOf(a) == reflect.TypeOf(b)
} else if raValid != rbValid {
// Both values must be valid to be equal
return false
}
return reflect.DeepEqual(ra.Interface(), rb.Interface())
}

221
vendor/github.com/aws/aws-sdk-go/aws/awsutil/path_value.go generated vendored Normal file
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package awsutil
import (
"reflect"
"regexp"
"strconv"
"strings"
"github.com/jmespath/go-jmespath"
)
var indexRe = regexp.MustCompile(`(.+)\[(-?\d+)?\]$`)
// rValuesAtPath returns a slice of values found in value v. The values
// in v are explored recursively so all nested values are collected.
func rValuesAtPath(v interface{}, path string, createPath, caseSensitive, nilTerm bool) []reflect.Value {
pathparts := strings.Split(path, "||")
if len(pathparts) > 1 {
for _, pathpart := range pathparts {
vals := rValuesAtPath(v, pathpart, createPath, caseSensitive, nilTerm)
if len(vals) > 0 {
return vals
}
}
return nil
}
values := []reflect.Value{reflect.Indirect(reflect.ValueOf(v))}
components := strings.Split(path, ".")
for len(values) > 0 && len(components) > 0 {
var index *int64
var indexStar bool
c := strings.TrimSpace(components[0])
if c == "" { // no actual component, illegal syntax
return nil
} else if caseSensitive && c != "*" && strings.ToLower(c[0:1]) == c[0:1] {
// TODO normalize case for user
return nil // don't support unexported fields
}
// parse this component
if m := indexRe.FindStringSubmatch(c); m != nil {
c = m[1]
if m[2] == "" {
index = nil
indexStar = true
} else {
i, _ := strconv.ParseInt(m[2], 10, 32)
index = &i
indexStar = false
}
}
nextvals := []reflect.Value{}
for _, value := range values {
// pull component name out of struct member
if value.Kind() != reflect.Struct {
continue
}
if c == "*" { // pull all members
for i := 0; i < value.NumField(); i++ {
if f := reflect.Indirect(value.Field(i)); f.IsValid() {
nextvals = append(nextvals, f)
}
}
continue
}
value = value.FieldByNameFunc(func(name string) bool {
if c == name {
return true
} else if !caseSensitive && strings.EqualFold(name, c) {
return true
}
return false
})
if nilTerm && value.Kind() == reflect.Ptr && len(components[1:]) == 0 {
if !value.IsNil() {
value.Set(reflect.Zero(value.Type()))
}
return []reflect.Value{value}
}
if createPath && value.Kind() == reflect.Ptr && value.IsNil() {
// TODO if the value is the terminus it should not be created
// if the value to be set to its position is nil.
value.Set(reflect.New(value.Type().Elem()))
value = value.Elem()
} else {
value = reflect.Indirect(value)
}
if value.Kind() == reflect.Slice || value.Kind() == reflect.Map {
if !createPath && value.IsNil() {
value = reflect.ValueOf(nil)
}
}
if value.IsValid() {
nextvals = append(nextvals, value)
}
}
values = nextvals
if indexStar || index != nil {
nextvals = []reflect.Value{}
for _, valItem := range values {
value := reflect.Indirect(valItem)
if value.Kind() != reflect.Slice {
continue
}
if indexStar { // grab all indices
for i := 0; i < value.Len(); i++ {
idx := reflect.Indirect(value.Index(i))
if idx.IsValid() {
nextvals = append(nextvals, idx)
}
}
continue
}
// pull out index
i := int(*index)
if i >= value.Len() { // check out of bounds
if createPath {
// TODO resize slice
} else {
continue
}
} else if i < 0 { // support negative indexing
i = value.Len() + i
}
value = reflect.Indirect(value.Index(i))
if value.Kind() == reflect.Slice || value.Kind() == reflect.Map {
if !createPath && value.IsNil() {
value = reflect.ValueOf(nil)
}
}
if value.IsValid() {
nextvals = append(nextvals, value)
}
}
values = nextvals
}
components = components[1:]
}
return values
}
// ValuesAtPath returns a list of values at the case insensitive lexical
// path inside of a structure.
func ValuesAtPath(i interface{}, path string) ([]interface{}, error) {
result, err := jmespath.Search(path, i)
if err != nil {
return nil, err
}
v := reflect.ValueOf(result)
if !v.IsValid() || (v.Kind() == reflect.Ptr && v.IsNil()) {
return nil, nil
}
if s, ok := result.([]interface{}); ok {
return s, err
}
if v.Kind() == reflect.Map && v.Len() == 0 {
return nil, nil
}
if v.Kind() == reflect.Slice {
out := make([]interface{}, v.Len())
for i := 0; i < v.Len(); i++ {
out[i] = v.Index(i).Interface()
}
return out, nil
}
return []interface{}{result}, nil
}
// SetValueAtPath sets a value at the case insensitive lexical path inside
// of a structure.
func SetValueAtPath(i interface{}, path string, v interface{}) {
rvals := rValuesAtPath(i, path, true, false, v == nil)
for _, rval := range rvals {
if rval.Kind() == reflect.Ptr && rval.IsNil() {
continue
}
setValue(rval, v)
}
}
func setValue(dstVal reflect.Value, src interface{}) {
if dstVal.Kind() == reflect.Ptr {
dstVal = reflect.Indirect(dstVal)
}
srcVal := reflect.ValueOf(src)
if !srcVal.IsValid() { // src is literal nil
if dstVal.CanAddr() {
// Convert to pointer so that pointer's value can be nil'ed
// dstVal = dstVal.Addr()
}
dstVal.Set(reflect.Zero(dstVal.Type()))
} else if srcVal.Kind() == reflect.Ptr {
if srcVal.IsNil() {
srcVal = reflect.Zero(dstVal.Type())
} else {
srcVal = reflect.ValueOf(src).Elem()
}
dstVal.Set(srcVal)
} else {
dstVal.Set(srcVal)
}
}

123
vendor/github.com/aws/aws-sdk-go/aws/awsutil/prettify.go generated vendored Normal file
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package awsutil
import (
"bytes"
"fmt"
"io"
"reflect"
"strings"
)
// Prettify returns the string representation of a value.
func Prettify(i interface{}) string {
var buf bytes.Buffer
prettify(reflect.ValueOf(i), 0, &buf)
return buf.String()
}
// prettify will recursively walk value v to build a textual
// representation of the value.
func prettify(v reflect.Value, indent int, buf *bytes.Buffer) {
for v.Kind() == reflect.Ptr {
v = v.Elem()
}
switch v.Kind() {
case reflect.Struct:
strtype := v.Type().String()
if strtype == "time.Time" {
fmt.Fprintf(buf, "%s", v.Interface())
break
} else if strings.HasPrefix(strtype, "io.") {
buf.WriteString("<buffer>")
break
}
buf.WriteString("{\n")
names := []string{}
for i := 0; i < v.Type().NumField(); i++ {
name := v.Type().Field(i).Name
f := v.Field(i)
if name[0:1] == strings.ToLower(name[0:1]) {
continue // ignore unexported fields
}
if (f.Kind() == reflect.Ptr || f.Kind() == reflect.Slice || f.Kind() == reflect.Map) && f.IsNil() {
continue // ignore unset fields
}
names = append(names, name)
}
for i, n := range names {
val := v.FieldByName(n)
ft, ok := v.Type().FieldByName(n)
if !ok {
panic(fmt.Sprintf("expected to find field %v on type %v, but was not found", n, v.Type()))
}
buf.WriteString(strings.Repeat(" ", indent+2))
buf.WriteString(n + ": ")
if tag := ft.Tag.Get("sensitive"); tag == "true" {
buf.WriteString("<sensitive>")
} else {
prettify(val, indent+2, buf)
}
if i < len(names)-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
case reflect.Slice:
strtype := v.Type().String()
if strtype == "[]uint8" {
fmt.Fprintf(buf, "<binary> len %d", v.Len())
break
}
nl, id, id2 := "", "", ""
if v.Len() > 3 {
nl, id, id2 = "\n", strings.Repeat(" ", indent), strings.Repeat(" ", indent+2)
}
buf.WriteString("[" + nl)
for i := 0; i < v.Len(); i++ {
buf.WriteString(id2)
prettify(v.Index(i), indent+2, buf)
if i < v.Len()-1 {
buf.WriteString("," + nl)
}
}
buf.WriteString(nl + id + "]")
case reflect.Map:
buf.WriteString("{\n")
for i, k := range v.MapKeys() {
buf.WriteString(strings.Repeat(" ", indent+2))
buf.WriteString(k.String() + ": ")
prettify(v.MapIndex(k), indent+2, buf)
if i < v.Len()-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
default:
if !v.IsValid() {
fmt.Fprint(buf, "<invalid value>")
return
}
format := "%v"
switch v.Interface().(type) {
case string:
format = "%q"
case io.ReadSeeker, io.Reader:
format = "buffer(%p)"
}
fmt.Fprintf(buf, format, v.Interface())
}
}

90
vendor/github.com/aws/aws-sdk-go/aws/awsutil/string_value.go generated vendored Normal file
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@ -0,0 +1,90 @@
package awsutil
import (
"bytes"
"fmt"
"reflect"
"strings"
)
// StringValue returns the string representation of a value.
//
// Deprecated: Use Prettify instead.
func StringValue(i interface{}) string {
var buf bytes.Buffer
stringValue(reflect.ValueOf(i), 0, &buf)
return buf.String()
}
func stringValue(v reflect.Value, indent int, buf *bytes.Buffer) {
for v.Kind() == reflect.Ptr {
v = v.Elem()
}
switch v.Kind() {
case reflect.Struct:
buf.WriteString("{\n")
for i := 0; i < v.Type().NumField(); i++ {
ft := v.Type().Field(i)
fv := v.Field(i)
if ft.Name[0:1] == strings.ToLower(ft.Name[0:1]) {
continue // ignore unexported fields
}
if (fv.Kind() == reflect.Ptr || fv.Kind() == reflect.Slice) && fv.IsNil() {
continue // ignore unset fields
}
buf.WriteString(strings.Repeat(" ", indent+2))
buf.WriteString(ft.Name + ": ")
if tag := ft.Tag.Get("sensitive"); tag == "true" {
buf.WriteString("<sensitive>")
} else {
stringValue(fv, indent+2, buf)
}
buf.WriteString(",\n")
}
buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
case reflect.Slice:
nl, id, id2 := "", "", ""
if v.Len() > 3 {
nl, id, id2 = "\n", strings.Repeat(" ", indent), strings.Repeat(" ", indent+2)
}
buf.WriteString("[" + nl)
for i := 0; i < v.Len(); i++ {
buf.WriteString(id2)
stringValue(v.Index(i), indent+2, buf)
if i < v.Len()-1 {
buf.WriteString("," + nl)
}
}
buf.WriteString(nl + id + "]")
case reflect.Map:
buf.WriteString("{\n")
for i, k := range v.MapKeys() {
buf.WriteString(strings.Repeat(" ", indent+2))
buf.WriteString(k.String() + ": ")
stringValue(v.MapIndex(k), indent+2, buf)
if i < v.Len()-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
default:
format := "%v"
switch v.Interface().(type) {
case string:
format = "%q"
}
fmt.Fprintf(buf, format, v.Interface())
}
}

94
vendor/github.com/aws/aws-sdk-go/aws/client/client.go generated vendored Normal file
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package client
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/client/metadata"
"github.com/aws/aws-sdk-go/aws/request"
)
// A Config provides configuration to a service client instance.
type Config struct {
Config *aws.Config
Handlers request.Handlers
PartitionID string
Endpoint string
SigningRegion string
SigningName string
ResolvedRegion string
// States that the signing name did not come from a modeled source but
// was derived based on other data. Used by service client constructors
// to determine if the signin name can be overridden based on metadata the
// service has.
SigningNameDerived bool
}
// ConfigProvider provides a generic way for a service client to receive
// the ClientConfig without circular dependencies.
type ConfigProvider interface {
ClientConfig(serviceName string, cfgs ...*aws.Config) Config
}
// ConfigNoResolveEndpointProvider same as ConfigProvider except it will not
// resolve the endpoint automatically. The service client's endpoint must be
// provided via the aws.Config.Endpoint field.
type ConfigNoResolveEndpointProvider interface {
ClientConfigNoResolveEndpoint(cfgs ...*aws.Config) Config
}
// A Client implements the base client request and response handling
// used by all service clients.
type Client struct {
request.Retryer
metadata.ClientInfo
Config aws.Config
Handlers request.Handlers
}
// New will return a pointer to a new initialized service client.
func New(cfg aws.Config, info metadata.ClientInfo, handlers request.Handlers, options ...func(*Client)) *Client {
svc := &Client{
Config: cfg,
ClientInfo: info,
Handlers: handlers.Copy(),
}
switch retryer, ok := cfg.Retryer.(request.Retryer); {
case ok:
svc.Retryer = retryer
case cfg.Retryer != nil && cfg.Logger != nil:
s := fmt.Sprintf("WARNING: %T does not implement request.Retryer; using DefaultRetryer instead", cfg.Retryer)
cfg.Logger.Log(s)
fallthrough
default:
maxRetries := aws.IntValue(cfg.MaxRetries)
if cfg.MaxRetries == nil || maxRetries == aws.UseServiceDefaultRetries {
maxRetries = DefaultRetryerMaxNumRetries
}
svc.Retryer = DefaultRetryer{NumMaxRetries: maxRetries}
}
svc.AddDebugHandlers()
for _, option := range options {
option(svc)
}
return svc
}
// NewRequest returns a new Request pointer for the service API
// operation and parameters.
func (c *Client) NewRequest(operation *request.Operation, params interface{}, data interface{}) *request.Request {
return request.New(c.Config, c.ClientInfo, c.Handlers, c.Retryer, operation, params, data)
}
// AddDebugHandlers injects debug logging handlers into the service to log request
// debug information.
func (c *Client) AddDebugHandlers() {
c.Handlers.Send.PushFrontNamed(LogHTTPRequestHandler)
c.Handlers.Send.PushBackNamed(LogHTTPResponseHandler)
}

177
vendor/github.com/aws/aws-sdk-go/aws/client/default_retryer.go generated vendored Normal file
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package client
import (
"math"
"strconv"
"time"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/sdkrand"
)
// DefaultRetryer implements basic retry logic using exponential backoff for
// most services. If you want to implement custom retry logic, you can implement the
// request.Retryer interface.
//
type DefaultRetryer struct {
// Num max Retries is the number of max retries that will be performed.
// By default, this is zero.
NumMaxRetries int
// MinRetryDelay is the minimum retry delay after which retry will be performed.
// If not set, the value is 0ns.
MinRetryDelay time.Duration
// MinThrottleRetryDelay is the minimum retry delay when throttled.
// If not set, the value is 0ns.
MinThrottleDelay time.Duration
// MaxRetryDelay is the maximum retry delay before which retry must be performed.
// If not set, the value is 0ns.
MaxRetryDelay time.Duration
// MaxThrottleDelay is the maximum retry delay when throttled.
// If not set, the value is 0ns.
MaxThrottleDelay time.Duration
}
const (
// DefaultRetryerMaxNumRetries sets maximum number of retries
DefaultRetryerMaxNumRetries = 3
// DefaultRetryerMinRetryDelay sets minimum retry delay
DefaultRetryerMinRetryDelay = 30 * time.Millisecond
// DefaultRetryerMinThrottleDelay sets minimum delay when throttled
DefaultRetryerMinThrottleDelay = 500 * time.Millisecond
// DefaultRetryerMaxRetryDelay sets maximum retry delay
DefaultRetryerMaxRetryDelay = 300 * time.Second
// DefaultRetryerMaxThrottleDelay sets maximum delay when throttled
DefaultRetryerMaxThrottleDelay = 300 * time.Second
)
// MaxRetries returns the number of maximum returns the service will use to make
// an individual API request.
func (d DefaultRetryer) MaxRetries() int {
return d.NumMaxRetries
}
// setRetryerDefaults sets the default values of the retryer if not set
func (d *DefaultRetryer) setRetryerDefaults() {
if d.MinRetryDelay == 0 {
d.MinRetryDelay = DefaultRetryerMinRetryDelay
}
if d.MaxRetryDelay == 0 {
d.MaxRetryDelay = DefaultRetryerMaxRetryDelay
}
if d.MinThrottleDelay == 0 {
d.MinThrottleDelay = DefaultRetryerMinThrottleDelay
}
if d.MaxThrottleDelay == 0 {
d.MaxThrottleDelay = DefaultRetryerMaxThrottleDelay
}
}
// RetryRules returns the delay duration before retrying this request again
func (d DefaultRetryer) RetryRules(r *request.Request) time.Duration {
// if number of max retries is zero, no retries will be performed.
if d.NumMaxRetries == 0 {
return 0
}
// Sets default value for retryer members
d.setRetryerDefaults()
// minDelay is the minimum retryer delay
minDelay := d.MinRetryDelay
var initialDelay time.Duration
isThrottle := r.IsErrorThrottle()
if isThrottle {
if delay, ok := getRetryAfterDelay(r); ok {
initialDelay = delay
}
minDelay = d.MinThrottleDelay
}
retryCount := r.RetryCount
// maxDelay the maximum retryer delay
maxDelay := d.MaxRetryDelay
if isThrottle {
maxDelay = d.MaxThrottleDelay
}
var delay time.Duration
// Logic to cap the retry count based on the minDelay provided
actualRetryCount := int(math.Log2(float64(minDelay))) + 1
if actualRetryCount < 63-retryCount {
delay = time.Duration(1<<uint64(retryCount)) * getJitterDelay(minDelay)
if delay > maxDelay {
delay = getJitterDelay(maxDelay / 2)
}
} else {
delay = getJitterDelay(maxDelay / 2)
}
return delay + initialDelay
}
// getJitterDelay returns a jittered delay for retry
func getJitterDelay(duration time.Duration) time.Duration {
return time.Duration(sdkrand.SeededRand.Int63n(int64(duration)) + int64(duration))
}
// ShouldRetry returns true if the request should be retried.
func (d DefaultRetryer) ShouldRetry(r *request.Request) bool {
// ShouldRetry returns false if number of max retries is 0.
if d.NumMaxRetries == 0 {
return false
}
// If one of the other handlers already set the retry state
// we don't want to override it based on the service's state
if r.Retryable != nil {
return *r.Retryable
}
return r.IsErrorRetryable() || r.IsErrorThrottle()
}
// This will look in the Retry-After header, RFC 7231, for how long
// it will wait before attempting another request
func getRetryAfterDelay(r *request.Request) (time.Duration, bool) {
if !canUseRetryAfterHeader(r) {
return 0, false
}
delayStr := r.HTTPResponse.Header.Get("Retry-After")
if len(delayStr) == 0 {
return 0, false
}
delay, err := strconv.Atoi(delayStr)
if err != nil {
return 0, false
}
return time.Duration(delay) * time.Second, true
}
// Will look at the status code to see if the retry header pertains to
// the status code.
func canUseRetryAfterHeader(r *request.Request) bool {
switch r.HTTPResponse.StatusCode {
case 429:
case 503:
default:
return false
}
return true
}

206
vendor/github.com/aws/aws-sdk-go/aws/client/logger.go generated vendored Normal file
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@ -0,0 +1,206 @@
package client
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/http/httputil"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/request"
)
const logReqMsg = `DEBUG: Request %s/%s Details:
---[ REQUEST POST-SIGN ]-----------------------------
%s
-----------------------------------------------------`
const logReqErrMsg = `DEBUG ERROR: Request %s/%s:
---[ REQUEST DUMP ERROR ]-----------------------------
%s
------------------------------------------------------`
type logWriter struct {
// Logger is what we will use to log the payload of a response.
Logger aws.Logger
// buf stores the contents of what has been read
buf *bytes.Buffer
}
func (logger *logWriter) Write(b []byte) (int, error) {
return logger.buf.Write(b)
}
type teeReaderCloser struct {
// io.Reader will be a tee reader that is used during logging.
// This structure will read from a body and write the contents to a logger.
io.Reader
// Source is used just to close when we are done reading.
Source io.ReadCloser
}
func (reader *teeReaderCloser) Close() error {
return reader.Source.Close()
}
// LogHTTPRequestHandler is a SDK request handler to log the HTTP request sent
// to a service. Will include the HTTP request body if the LogLevel of the
// request matches LogDebugWithHTTPBody.
var LogHTTPRequestHandler = request.NamedHandler{
Name: "awssdk.client.LogRequest",
Fn: logRequest,
}
func logRequest(r *request.Request) {
if !r.Config.LogLevel.AtLeast(aws.LogDebug) || r.Config.Logger == nil {
return
}
logBody := r.Config.LogLevel.Matches(aws.LogDebugWithHTTPBody)
bodySeekable := aws.IsReaderSeekable(r.Body)
b, err := httputil.DumpRequestOut(r.HTTPRequest, logBody)
if err != nil {
r.Config.Logger.Log(fmt.Sprintf(logReqErrMsg,
r.ClientInfo.ServiceName, r.Operation.Name, err))
return
}
if logBody {
if !bodySeekable {
r.SetReaderBody(aws.ReadSeekCloser(r.HTTPRequest.Body))
}
// Reset the request body because dumpRequest will re-wrap the
// r.HTTPRequest's Body as a NoOpCloser and will not be reset after
// read by the HTTP client reader.
if err := r.Error; err != nil {
r.Config.Logger.Log(fmt.Sprintf(logReqErrMsg,
r.ClientInfo.ServiceName, r.Operation.Name, err))
return
}
}
r.Config.Logger.Log(fmt.Sprintf(logReqMsg,
r.ClientInfo.ServiceName, r.Operation.Name, string(b)))
}
// LogHTTPRequestHeaderHandler is a SDK request handler to log the HTTP request sent
// to a service. Will only log the HTTP request's headers. The request payload
// will not be read.
var LogHTTPRequestHeaderHandler = request.NamedHandler{
Name: "awssdk.client.LogRequestHeader",
Fn: logRequestHeader,
}
func logRequestHeader(r *request.Request) {
if !r.Config.LogLevel.AtLeast(aws.LogDebug) || r.Config.Logger == nil {
return
}
b, err := httputil.DumpRequestOut(r.HTTPRequest, false)
if err != nil {
r.Config.Logger.Log(fmt.Sprintf(logReqErrMsg,
r.ClientInfo.ServiceName, r.Operation.Name, err))
return
}
r.Config.Logger.Log(fmt.Sprintf(logReqMsg,
r.ClientInfo.ServiceName, r.Operation.Name, string(b)))
}
const logRespMsg = `DEBUG: Response %s/%s Details:
---[ RESPONSE ]--------------------------------------
%s
-----------------------------------------------------`
const logRespErrMsg = `DEBUG ERROR: Response %s/%s:
---[ RESPONSE DUMP ERROR ]-----------------------------
%s
-----------------------------------------------------`
// LogHTTPResponseHandler is a SDK request handler to log the HTTP response
// received from a service. Will include the HTTP response body if the LogLevel
// of the request matches LogDebugWithHTTPBody.
var LogHTTPResponseHandler = request.NamedHandler{
Name: "awssdk.client.LogResponse",
Fn: logResponse,
}
func logResponse(r *request.Request) {
if !r.Config.LogLevel.AtLeast(aws.LogDebug) || r.Config.Logger == nil {
return
}
lw := &logWriter{r.Config.Logger, bytes.NewBuffer(nil)}
if r.HTTPResponse == nil {
lw.Logger.Log(fmt.Sprintf(logRespErrMsg,
r.ClientInfo.ServiceName, r.Operation.Name, "request's HTTPResponse is nil"))
return
}
logBody := r.Config.LogLevel.Matches(aws.LogDebugWithHTTPBody)
if logBody {
r.HTTPResponse.Body = &teeReaderCloser{
Reader: io.TeeReader(r.HTTPResponse.Body, lw),
Source: r.HTTPResponse.Body,
}
}
handlerFn := func(req *request.Request) {
b, err := httputil.DumpResponse(req.HTTPResponse, false)
if err != nil {
lw.Logger.Log(fmt.Sprintf(logRespErrMsg,
req.ClientInfo.ServiceName, req.Operation.Name, err))
return
}
lw.Logger.Log(fmt.Sprintf(logRespMsg,
req.ClientInfo.ServiceName, req.Operation.Name, string(b)))
if logBody {
b, err := ioutil.ReadAll(lw.buf)
if err != nil {
lw.Logger.Log(fmt.Sprintf(logRespErrMsg,
req.ClientInfo.ServiceName, req.Operation.Name, err))
return
}
lw.Logger.Log(string(b))
}
}
const handlerName = "awsdk.client.LogResponse.ResponseBody"
r.Handlers.Unmarshal.SetBackNamed(request.NamedHandler{
Name: handlerName, Fn: handlerFn,
})
r.Handlers.UnmarshalError.SetBackNamed(request.NamedHandler{
Name: handlerName, Fn: handlerFn,
})
}
// LogHTTPResponseHeaderHandler is a SDK request handler to log the HTTP
// response received from a service. Will only log the HTTP response's headers.
// The response payload will not be read.
var LogHTTPResponseHeaderHandler = request.NamedHandler{
Name: "awssdk.client.LogResponseHeader",
Fn: logResponseHeader,
}
func logResponseHeader(r *request.Request) {
if !r.Config.LogLevel.AtLeast(aws.LogDebug) || r.Config.Logger == nil {
return
}
b, err := httputil.DumpResponse(r.HTTPResponse, false)
if err != nil {
r.Config.Logger.Log(fmt.Sprintf(logRespErrMsg,
r.ClientInfo.ServiceName, r.Operation.Name, err))
return
}
r.Config.Logger.Log(fmt.Sprintf(logRespMsg,
r.ClientInfo.ServiceName, r.Operation.Name, string(b)))
}

15
vendor/github.com/aws/aws-sdk-go/aws/client/metadata/client_info.go generated vendored Normal file
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package metadata
// ClientInfo wraps immutable data from the client.Client structure.
type ClientInfo struct {
ServiceName string
ServiceID string
APIVersion string
PartitionID string
Endpoint string
SigningName string
SigningRegion string
JSONVersion string
TargetPrefix string
ResolvedRegion string
}

28
vendor/github.com/aws/aws-sdk-go/aws/client/no_op_retryer.go generated vendored Normal file
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package client
import (
"time"
"github.com/aws/aws-sdk-go/aws/request"
)
// NoOpRetryer provides a retryer that performs no retries.
// It should be used when we do not want retries to be performed.
type NoOpRetryer struct{}
// MaxRetries returns the number of maximum returns the service will use to make
// an individual API; For NoOpRetryer the MaxRetries will always be zero.
func (d NoOpRetryer) MaxRetries() int {
return 0
}
// ShouldRetry will always return false for NoOpRetryer, as it should never retry.
func (d NoOpRetryer) ShouldRetry(_ *request.Request) bool {
return false
}
// RetryRules returns the delay duration before retrying this request again;
// since NoOpRetryer does not retry, RetryRules always returns 0.
func (d NoOpRetryer) RetryRules(_ *request.Request) time.Duration {
return 0
}

659
vendor/github.com/aws/aws-sdk-go/aws/config.go generated vendored Normal file
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@ -0,0 +1,659 @@
package aws
import (
"net/http"
"time"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/endpoints"
)
// UseServiceDefaultRetries instructs the config to use the service's own
// default number of retries. This will be the default action if
// Config.MaxRetries is nil also.
const UseServiceDefaultRetries = -1
// RequestRetryer is an alias for a type that implements the request.Retryer
// interface.
type RequestRetryer interface{}
// A Config provides service configuration for service clients. By default,
// all clients will use the defaults.DefaultConfig structure.
//
// // Create Session with MaxRetries configuration to be shared by multiple
// // service clients.
// sess := session.Must(session.NewSession(&aws.Config{
// MaxRetries: aws.Int(3),
// }))
//
// // Create S3 service client with a specific Region.
// svc := s3.New(sess, &aws.Config{
// Region: aws.String("us-west-2"),
// })
type Config struct {
// Enables verbose error printing of all credential chain errors.
// Should be used when wanting to see all errors while attempting to
// retrieve credentials.
CredentialsChainVerboseErrors *bool
// The credentials object to use when signing requests. Defaults to a
// chain of credential providers to search for credentials in environment
// variables, shared credential file, and EC2 Instance Roles.
Credentials *credentials.Credentials
// An optional endpoint URL (hostname only or fully qualified URI)
// that overrides the default generated endpoint for a client. Set this
// to `nil` or the value to `""` to use the default generated endpoint.
//
// Note: You must still provide a `Region` value when specifying an
// endpoint for a client.
Endpoint *string
// The resolver to use for looking up endpoints for AWS service clients
// to use based on region.
EndpointResolver endpoints.Resolver
// EnforceShouldRetryCheck is used in the AfterRetryHandler to always call
// ShouldRetry regardless of whether or not if request.Retryable is set.
// This will utilize ShouldRetry method of custom retryers. If EnforceShouldRetryCheck
// is not set, then ShouldRetry will only be called if request.Retryable is nil.
// Proper handling of the request.Retryable field is important when setting this field.
EnforceShouldRetryCheck *bool
// The region to send requests to. This parameter is required and must
// be configured globally or on a per-client basis unless otherwise
// noted. A full list of regions is found in the "Regions and Endpoints"
// document.
//
// See http://docs.aws.amazon.com/general/latest/gr/rande.html for AWS
// Regions and Endpoints.
Region *string
// Set this to `true` to disable SSL when sending requests. Defaults
// to `false`.
DisableSSL *bool
// The HTTP client to use when sending requests. Defaults to
// `http.DefaultClient`.
HTTPClient *http.Client
// An integer value representing the logging level. The default log level
// is zero (LogOff), which represents no logging. To enable logging set
// to a LogLevel Value.
LogLevel *LogLevelType
// The logger writer interface to write logging messages to. Defaults to
// standard out.
Logger Logger
// The maximum number of times that a request will be retried for failures.
// Defaults to -1, which defers the max retry setting to the service
// specific configuration.
MaxRetries *int
// Retryer guides how HTTP requests should be retried in case of
// recoverable failures.
//
// When nil or the value does not implement the request.Retryer interface,
// the client.DefaultRetryer will be used.
//
// When both Retryer and MaxRetries are non-nil, the former is used and
// the latter ignored.
//
// To set the Retryer field in a type-safe manner and with chaining, use
// the request.WithRetryer helper function:
//
// cfg := request.WithRetryer(aws.NewConfig(), myRetryer)
//
Retryer RequestRetryer
// Disables semantic parameter validation, which validates input for
// missing required fields and/or other semantic request input errors.
DisableParamValidation *bool
// Disables the computation of request and response checksums, e.g.,
// CRC32 checksums in Amazon DynamoDB.
DisableComputeChecksums *bool
// Set this to `true` to force the request to use path-style addressing,
// i.e., `http://s3.amazonaws.com/BUCKET/KEY`. By default, the S3 client
// will use virtual hosted bucket addressing when possible
// (`http://BUCKET.s3.amazonaws.com/KEY`).
//
// Note: This configuration option is specific to the Amazon S3 service.
//
// See http://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html
// for Amazon S3: Virtual Hosting of Buckets
S3ForcePathStyle *bool
// Set this to `true` to disable the SDK adding the `Expect: 100-Continue`
// header to PUT requests over 2MB of content. 100-Continue instructs the
// HTTP client not to send the body until the service responds with a
// `continue` status. This is useful to prevent sending the request body
// until after the request is authenticated, and validated.
//
// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html
//
// 100-Continue is only enabled for Go 1.6 and above. See `http.Transport`'s
// `ExpectContinueTimeout` for information on adjusting the continue wait
// timeout. https://golang.org/pkg/net/http/#Transport
//
// You should use this flag to disable 100-Continue if you experience issues
// with proxies or third party S3 compatible services.
S3Disable100Continue *bool
// Set this to `true` to enable S3 Accelerate feature. For all operations
// compatible with S3 Accelerate will use the accelerate endpoint for
// requests. Requests not compatible will fall back to normal S3 requests.
//
// The bucket must be enable for accelerate to be used with S3 client with
// accelerate enabled. If the bucket is not enabled for accelerate an error
// will be returned. The bucket name must be DNS compatible to also work
// with accelerate.
S3UseAccelerate *bool
// S3DisableContentMD5Validation config option is temporarily disabled,
// For S3 GetObject API calls, #1837.
//
// Set this to `true` to disable the S3 service client from automatically
// adding the ContentMD5 to S3 Object Put and Upload API calls. This option
// will also disable the SDK from performing object ContentMD5 validation
// on GetObject API calls.
S3DisableContentMD5Validation *bool
// Set this to `true` to have the S3 service client to use the region specified
// in the ARN, when an ARN is provided as an argument to a bucket parameter.
S3UseARNRegion *bool
// Set this to `true` to enable the SDK to unmarshal API response header maps to
// normalized lower case map keys.
//
// For example S3's X-Amz-Meta prefixed header will be unmarshaled to lower case
// Metadata member's map keys. The value of the header in the map is unaffected.
//
// The AWS SDK for Go v2, uses lower case header maps by default. The v1
// SDK provides this opt-in for this option, for backwards compatibility.
LowerCaseHeaderMaps *bool
// Set this to `true` to disable the EC2Metadata client from overriding the
// default http.Client's Timeout. This is helpful if you do not want the
// EC2Metadata client to create a new http.Client. This options is only
// meaningful if you're not already using a custom HTTP client with the
// SDK. Enabled by default.
//
// Must be set and provided to the session.NewSession() in order to disable
// the EC2Metadata overriding the timeout for default credentials chain.
//
// Example:
// sess := session.Must(session.NewSession(aws.NewConfig()
// .WithEC2MetadataDisableTimeoutOverride(true)))
//
// svc := s3.New(sess)
//
EC2MetadataDisableTimeoutOverride *bool
// Set this to `false` to disable EC2Metadata client from falling back to IMDSv1.
// By default, EC2 role credentials will fall back to IMDSv1 as needed for backwards compatibility.
// You can disable this behavior by explicitly setting this flag to `false`. When false, the EC2Metadata
// client will return any errors encountered from attempting to fetch a token instead of silently
// using the insecure data flow of IMDSv1.
//
// Example:
// sess := session.Must(session.NewSession(aws.NewConfig()
// .WithEC2MetadataEnableFallback(false)))
//
// svc := s3.New(sess)
//
// See [configuring IMDS] for more information.
//
// [configuring IMDS]: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
EC2MetadataEnableFallback *bool
// Instructs the endpoint to be generated for a service client to
// be the dual stack endpoint. The dual stack endpoint will support
// both IPv4 and IPv6 addressing.
//
// Setting this for a service which does not support dual stack will fail
// to make requests. It is not recommended to set this value on the session
// as it will apply to all service clients created with the session. Even
// services which don't support dual stack endpoints.
//
// If the Endpoint config value is also provided the UseDualStack flag
// will be ignored.
//
// Only supported with.
//
// sess := session.Must(session.NewSession())
//
// svc := s3.New(sess, &aws.Config{
// UseDualStack: aws.Bool(true),
// })
//
// Deprecated: This option will continue to function for S3 and S3 Control for backwards compatibility.
// UseDualStackEndpoint should be used to enable usage of a service's dual-stack endpoint for all service clients
// moving forward. For S3 and S3 Control, when UseDualStackEndpoint is set to a non-zero value it takes higher
// precedence then this option.
UseDualStack *bool
// Sets the resolver to resolve a dual-stack endpoint for the service.
UseDualStackEndpoint endpoints.DualStackEndpointState
// UseFIPSEndpoint specifies the resolver must resolve a FIPS endpoint.
UseFIPSEndpoint endpoints.FIPSEndpointState
// SleepDelay is an override for the func the SDK will call when sleeping
// during the lifecycle of a request. Specifically this will be used for
// request delays. This value should only be used for testing. To adjust
// the delay of a request see the aws/client.DefaultRetryer and
// aws/request.Retryer.
//
// SleepDelay will prevent any Context from being used for canceling retry
// delay of an API operation. It is recommended to not use SleepDelay at all
// and specify a Retryer instead.
SleepDelay func(time.Duration)
// DisableRestProtocolURICleaning will not clean the URL path when making rest protocol requests.
// Will default to false. This would only be used for empty directory names in s3 requests.
//
// Example:
// sess := session.Must(session.NewSession(&aws.Config{
// DisableRestProtocolURICleaning: aws.Bool(true),
// }))
//
// svc := s3.New(sess)
// out, err := svc.GetObject(&s3.GetObjectInput {
// Bucket: aws.String("bucketname"),
// Key: aws.String("//foo//bar//moo"),
// })
DisableRestProtocolURICleaning *bool
// EnableEndpointDiscovery will allow for endpoint discovery on operations that
// have the definition in its model. By default, endpoint discovery is off.
// To use EndpointDiscovery, Endpoint should be unset or set to an empty string.
//
// Example:
// sess := session.Must(session.NewSession(&aws.Config{
// EnableEndpointDiscovery: aws.Bool(true),
// }))
//
// svc := s3.New(sess)
// out, err := svc.GetObject(&s3.GetObjectInput {
// Bucket: aws.String("bucketname"),
// Key: aws.String("/foo/bar/moo"),
// })
EnableEndpointDiscovery *bool
// DisableEndpointHostPrefix will disable the SDK's behavior of prefixing
// request endpoint hosts with modeled information.
//
// Disabling this feature is useful when you want to use local endpoints
// for testing that do not support the modeled host prefix pattern.
DisableEndpointHostPrefix *bool
// STSRegionalEndpoint will enable regional or legacy endpoint resolving
STSRegionalEndpoint endpoints.STSRegionalEndpoint
// S3UsEast1RegionalEndpoint will enable regional or legacy endpoint resolving
S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
}
// NewConfig returns a new Config pointer that can be chained with builder
// methods to set multiple configuration values inline without using pointers.
//
// // Create Session with MaxRetries configuration to be shared by multiple
// // service clients.
// sess := session.Must(session.NewSession(aws.NewConfig().
// WithMaxRetries(3),
// ))
//
// // Create S3 service client with a specific Region.
// svc := s3.New(sess, aws.NewConfig().
// WithRegion("us-west-2"),
// )
func NewConfig() *Config {
return &Config{}
}
// WithCredentialsChainVerboseErrors sets a config verbose errors boolean and returning
// a Config pointer.
func (c *Config) WithCredentialsChainVerboseErrors(verboseErrs bool) *Config {
c.CredentialsChainVerboseErrors = &verboseErrs
return c
}
// WithCredentials sets a config Credentials value returning a Config pointer
// for chaining.
func (c *Config) WithCredentials(creds *credentials.Credentials) *Config {
c.Credentials = creds
return c
}
// WithEndpoint sets a config Endpoint value returning a Config pointer for
// chaining.
func (c *Config) WithEndpoint(endpoint string) *Config {
c.Endpoint = &endpoint
return c
}
// WithEndpointResolver sets a config EndpointResolver value returning a
// Config pointer for chaining.
func (c *Config) WithEndpointResolver(resolver endpoints.Resolver) *Config {
c.EndpointResolver = resolver
return c
}
// WithRegion sets a config Region value returning a Config pointer for
// chaining.
func (c *Config) WithRegion(region string) *Config {
c.Region = &region
return c
}
// WithDisableSSL sets a config DisableSSL value returning a Config pointer
// for chaining.
func (c *Config) WithDisableSSL(disable bool) *Config {
c.DisableSSL = &disable
return c
}
// WithHTTPClient sets a config HTTPClient value returning a Config pointer
// for chaining.
func (c *Config) WithHTTPClient(client *http.Client) *Config {
c.HTTPClient = client
return c
}
// WithMaxRetries sets a config MaxRetries value returning a Config pointer
// for chaining.
func (c *Config) WithMaxRetries(max int) *Config {
c.MaxRetries = &max
return c
}
// WithDisableParamValidation sets a config DisableParamValidation value
// returning a Config pointer for chaining.
func (c *Config) WithDisableParamValidation(disable bool) *Config {
c.DisableParamValidation = &disable
return c
}
// WithDisableComputeChecksums sets a config DisableComputeChecksums value
// returning a Config pointer for chaining.
func (c *Config) WithDisableComputeChecksums(disable bool) *Config {
c.DisableComputeChecksums = &disable
return c
}
// WithLogLevel sets a config LogLevel value returning a Config pointer for
// chaining.
func (c *Config) WithLogLevel(level LogLevelType) *Config {
c.LogLevel = &level
return c
}
// WithLogger sets a config Logger value returning a Config pointer for
// chaining.
func (c *Config) WithLogger(logger Logger) *Config {
c.Logger = logger
return c
}
// WithS3ForcePathStyle sets a config S3ForcePathStyle value returning a Config
// pointer for chaining.
func (c *Config) WithS3ForcePathStyle(force bool) *Config {
c.S3ForcePathStyle = &force
return c
}
// WithS3Disable100Continue sets a config S3Disable100Continue value returning
// a Config pointer for chaining.
func (c *Config) WithS3Disable100Continue(disable bool) *Config {
c.S3Disable100Continue = &disable
return c
}
// WithS3UseAccelerate sets a config S3UseAccelerate value returning a Config
// pointer for chaining.
func (c *Config) WithS3UseAccelerate(enable bool) *Config {
c.S3UseAccelerate = &enable
return c
}
// WithS3DisableContentMD5Validation sets a config
// S3DisableContentMD5Validation value returning a Config pointer for chaining.
func (c *Config) WithS3DisableContentMD5Validation(enable bool) *Config {
c.S3DisableContentMD5Validation = &enable
return c
}
// WithS3UseARNRegion sets a config S3UseARNRegion value and
// returning a Config pointer for chaining
func (c *Config) WithS3UseARNRegion(enable bool) *Config {
c.S3UseARNRegion = &enable
return c
}
// WithUseDualStack sets a config UseDualStack value returning a Config
// pointer for chaining.
func (c *Config) WithUseDualStack(enable bool) *Config {
c.UseDualStack = &enable
return c
}
// WithEC2MetadataDisableTimeoutOverride sets a config EC2MetadataDisableTimeoutOverride value
// returning a Config pointer for chaining.
func (c *Config) WithEC2MetadataDisableTimeoutOverride(enable bool) *Config {
c.EC2MetadataDisableTimeoutOverride = &enable
return c
}
// WithEC2MetadataEnableFallback sets a config EC2MetadataEnableFallback value
// returning a Config pointer for chaining.
func (c *Config) WithEC2MetadataEnableFallback(v bool) *Config {
c.EC2MetadataEnableFallback = &v
return c
}
// WithSleepDelay overrides the function used to sleep while waiting for the
// next retry. Defaults to time.Sleep.
func (c *Config) WithSleepDelay(fn func(time.Duration)) *Config {
c.SleepDelay = fn
return c
}
// WithEndpointDiscovery will set whether or not to use endpoint discovery.
func (c *Config) WithEndpointDiscovery(t bool) *Config {
c.EnableEndpointDiscovery = &t
return c
}
// WithDisableEndpointHostPrefix will set whether or not to use modeled host prefix
// when making requests.
func (c *Config) WithDisableEndpointHostPrefix(t bool) *Config {
c.DisableEndpointHostPrefix = &t
return c
}
// WithSTSRegionalEndpoint will set whether or not to use regional endpoint flag
// when resolving the endpoint for a service
func (c *Config) WithSTSRegionalEndpoint(sre endpoints.STSRegionalEndpoint) *Config {
c.STSRegionalEndpoint = sre
return c
}
// WithS3UsEast1RegionalEndpoint will set whether or not to use regional endpoint flag
// when resolving the endpoint for a service
func (c *Config) WithS3UsEast1RegionalEndpoint(sre endpoints.S3UsEast1RegionalEndpoint) *Config {
c.S3UsEast1RegionalEndpoint = sre
return c
}
// WithLowerCaseHeaderMaps sets a config LowerCaseHeaderMaps value
// returning a Config pointer for chaining.
func (c *Config) WithLowerCaseHeaderMaps(t bool) *Config {
c.LowerCaseHeaderMaps = &t
return c
}
// WithDisableRestProtocolURICleaning sets a config DisableRestProtocolURICleaning value
// returning a Config pointer for chaining.
func (c *Config) WithDisableRestProtocolURICleaning(t bool) *Config {
c.DisableRestProtocolURICleaning = &t
return c
}
// MergeIn merges the passed in configs into the existing config object.
func (c *Config) MergeIn(cfgs ...*Config) {
for _, other := range cfgs {
mergeInConfig(c, other)
}
}
func mergeInConfig(dst *Config, other *Config) {
if other == nil {
return
}
if other.CredentialsChainVerboseErrors != nil {
dst.CredentialsChainVerboseErrors = other.CredentialsChainVerboseErrors
}
if other.Credentials != nil {
dst.Credentials = other.Credentials
}
if other.Endpoint != nil {
dst.Endpoint = other.Endpoint
}
if other.EndpointResolver != nil {
dst.EndpointResolver = other.EndpointResolver
}
if other.Region != nil {
dst.Region = other.Region
}
if other.DisableSSL != nil {
dst.DisableSSL = other.DisableSSL
}
if other.HTTPClient != nil {
dst.HTTPClient = other.HTTPClient
}
if other.LogLevel != nil {
dst.LogLevel = other.LogLevel
}
if other.Logger != nil {
dst.Logger = other.Logger
}
if other.MaxRetries != nil {
dst.MaxRetries = other.MaxRetries
}
if other.Retryer != nil {
dst.Retryer = other.Retryer
}
if other.DisableParamValidation != nil {
dst.DisableParamValidation = other.DisableParamValidation
}
if other.DisableComputeChecksums != nil {
dst.DisableComputeChecksums = other.DisableComputeChecksums
}
if other.S3ForcePathStyle != nil {
dst.S3ForcePathStyle = other.S3ForcePathStyle
}
if other.S3Disable100Continue != nil {
dst.S3Disable100Continue = other.S3Disable100Continue
}
if other.S3UseAccelerate != nil {
dst.S3UseAccelerate = other.S3UseAccelerate
}
if other.S3DisableContentMD5Validation != nil {
dst.S3DisableContentMD5Validation = other.S3DisableContentMD5Validation
}
if other.S3UseARNRegion != nil {
dst.S3UseARNRegion = other.S3UseARNRegion
}
if other.UseDualStack != nil {
dst.UseDualStack = other.UseDualStack
}
if other.UseDualStackEndpoint != endpoints.DualStackEndpointStateUnset {
dst.UseDualStackEndpoint = other.UseDualStackEndpoint
}
if other.EC2MetadataDisableTimeoutOverride != nil {
dst.EC2MetadataDisableTimeoutOverride = other.EC2MetadataDisableTimeoutOverride
}
if other.EC2MetadataEnableFallback != nil {
dst.EC2MetadataEnableFallback = other.EC2MetadataEnableFallback
}
if other.SleepDelay != nil {
dst.SleepDelay = other.SleepDelay
}
if other.DisableRestProtocolURICleaning != nil {
dst.DisableRestProtocolURICleaning = other.DisableRestProtocolURICleaning
}
if other.EnforceShouldRetryCheck != nil {
dst.EnforceShouldRetryCheck = other.EnforceShouldRetryCheck
}
if other.EnableEndpointDiscovery != nil {
dst.EnableEndpointDiscovery = other.EnableEndpointDiscovery
}
if other.DisableEndpointHostPrefix != nil {
dst.DisableEndpointHostPrefix = other.DisableEndpointHostPrefix
}
if other.STSRegionalEndpoint != endpoints.UnsetSTSEndpoint {
dst.STSRegionalEndpoint = other.STSRegionalEndpoint
}
if other.S3UsEast1RegionalEndpoint != endpoints.UnsetS3UsEast1Endpoint {
dst.S3UsEast1RegionalEndpoint = other.S3UsEast1RegionalEndpoint
}
if other.LowerCaseHeaderMaps != nil {
dst.LowerCaseHeaderMaps = other.LowerCaseHeaderMaps
}
if other.UseDualStackEndpoint != endpoints.DualStackEndpointStateUnset {
dst.UseDualStackEndpoint = other.UseDualStackEndpoint
}
if other.UseFIPSEndpoint != endpoints.FIPSEndpointStateUnset {
dst.UseFIPSEndpoint = other.UseFIPSEndpoint
}
}
// Copy will return a shallow copy of the Config object. If any additional
// configurations are provided they will be merged into the new config returned.
func (c *Config) Copy(cfgs ...*Config) *Config {
dst := &Config{}
dst.MergeIn(c)
for _, cfg := range cfgs {
dst.MergeIn(cfg)
}
return dst
}

38
vendor/github.com/aws/aws-sdk-go/aws/context_1_5.go generated vendored Normal file
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//go:build !go1.9
// +build !go1.9
package aws
import "time"
// Context is an copy of the Go v1.7 stdlib's context.Context interface.
// It is represented as a SDK interface to enable you to use the "WithContext"
// API methods with Go v1.6 and a Context type such as golang.org/x/net/context.
//
// See https://golang.org/pkg/context on how to use contexts.
type Context interface {
// Deadline returns the time when work done on behalf of this context
// should be canceled. Deadline returns ok==false when no deadline is
// set. Successive calls to Deadline return the same results.
Deadline() (deadline time.Time, ok bool)
// Done returns a channel that's closed when work done on behalf of this
// context should be canceled. Done may return nil if this context can
// never be canceled. Successive calls to Done return the same value.
Done() <-chan struct{}
// Err returns a non-nil error value after Done is closed. Err returns
// Canceled if the context was canceled or DeadlineExceeded if the
// context's deadline passed. No other values for Err are defined.
// After Done is closed, successive calls to Err return the same value.
Err() error
// Value returns the value associated with this context for key, or nil
// if no value is associated with key. Successive calls to Value with
// the same key returns the same result.
//
// Use context values only for request-scoped data that transits
// processes and API boundaries, not for passing optional parameters to
// functions.
Value(key interface{}) interface{}
}

12
vendor/github.com/aws/aws-sdk-go/aws/context_1_9.go generated vendored Normal file
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@ -0,0 +1,12 @@
//go:build go1.9
// +build go1.9
package aws
import "context"
// Context is an alias of the Go stdlib's context.Context interface.
// It can be used within the SDK's API operation "WithContext" methods.
//
// See https://golang.org/pkg/context on how to use contexts.
type Context = context.Context

23
vendor/github.com/aws/aws-sdk-go/aws/context_background_1_5.go generated vendored Normal file
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@ -0,0 +1,23 @@
//go:build !go1.7
// +build !go1.7
package aws
import (
"github.com/aws/aws-sdk-go/internal/context"
)
// BackgroundContext returns a context that will never be canceled, has no
// values, and no deadline. This context is used by the SDK to provide
// backwards compatibility with non-context API operations and functionality.
//
// Go 1.6 and before:
// This context function is equivalent to context.Background in the Go stdlib.
//
// Go 1.7 and later:
// The context returned will be the value returned by context.Background()
//
// See https://golang.org/pkg/context for more information on Contexts.
func BackgroundContext() Context {
return context.BackgroundCtx
}

21
vendor/github.com/aws/aws-sdk-go/aws/context_background_1_7.go generated vendored Normal file
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@ -0,0 +1,21 @@
//go:build go1.7
// +build go1.7
package aws
import "context"
// BackgroundContext returns a context that will never be canceled, has no
// values, and no deadline. This context is used by the SDK to provide
// backwards compatibility with non-context API operations and functionality.
//
// Go 1.6 and before:
// This context function is equivalent to context.Background in the Go stdlib.
//
// Go 1.7 and later:
// The context returned will be the value returned by context.Background()
//
// See https://golang.org/pkg/context for more information on Contexts.
func BackgroundContext() Context {
return context.Background()
}

24
vendor/github.com/aws/aws-sdk-go/aws/context_sleep.go generated vendored Normal file
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@ -0,0 +1,24 @@
package aws
import (
"time"
)
// SleepWithContext will wait for the timer duration to expire, or the context
// is canceled. Which ever happens first. If the context is canceled the Context's
// error will be returned.
//
// Expects Context to always return a non-nil error if the Done channel is closed.
func SleepWithContext(ctx Context, dur time.Duration) error {
t := time.NewTimer(dur)
defer t.Stop()
select {
case <-t.C:
break
case <-ctx.Done():
return ctx.Err()
}
return nil
}

918
vendor/github.com/aws/aws-sdk-go/aws/convert_types.go generated vendored Normal file
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@ -0,0 +1,918 @@
package aws
import "time"
// String returns a pointer to the string value passed in.
func String(v string) *string {
return &v
}
// StringValue returns the value of the string pointer passed in or
// "" if the pointer is nil.
func StringValue(v *string) string {
if v != nil {
return *v
}
return ""
}
// StringSlice converts a slice of string values into a slice of
// string pointers
func StringSlice(src []string) []*string {
dst := make([]*string, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// StringValueSlice converts a slice of string pointers into a slice of
// string values
func StringValueSlice(src []*string) []string {
dst := make([]string, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// StringMap converts a string map of string values into a string
// map of string pointers
func StringMap(src map[string]string) map[string]*string {
dst := make(map[string]*string)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// StringValueMap converts a string map of string pointers into a string
// map of string values
func StringValueMap(src map[string]*string) map[string]string {
dst := make(map[string]string)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Bool returns a pointer to the bool value passed in.
func Bool(v bool) *bool {
return &v
}
// BoolValue returns the value of the bool pointer passed in or
// false if the pointer is nil.
func BoolValue(v *bool) bool {
if v != nil {
return *v
}
return false
}
// BoolSlice converts a slice of bool values into a slice of
// bool pointers
func BoolSlice(src []bool) []*bool {
dst := make([]*bool, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// BoolValueSlice converts a slice of bool pointers into a slice of
// bool values
func BoolValueSlice(src []*bool) []bool {
dst := make([]bool, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// BoolMap converts a string map of bool values into a string
// map of bool pointers
func BoolMap(src map[string]bool) map[string]*bool {
dst := make(map[string]*bool)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// BoolValueMap converts a string map of bool pointers into a string
// map of bool values
func BoolValueMap(src map[string]*bool) map[string]bool {
dst := make(map[string]bool)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Int returns a pointer to the int value passed in.
func Int(v int) *int {
return &v
}
// IntValue returns the value of the int pointer passed in or
// 0 if the pointer is nil.
func IntValue(v *int) int {
if v != nil {
return *v
}
return 0
}
// IntSlice converts a slice of int values into a slice of
// int pointers
func IntSlice(src []int) []*int {
dst := make([]*int, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// IntValueSlice converts a slice of int pointers into a slice of
// int values
func IntValueSlice(src []*int) []int {
dst := make([]int, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// IntMap converts a string map of int values into a string
// map of int pointers
func IntMap(src map[string]int) map[string]*int {
dst := make(map[string]*int)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// IntValueMap converts a string map of int pointers into a string
// map of int values
func IntValueMap(src map[string]*int) map[string]int {
dst := make(map[string]int)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Uint returns a pointer to the uint value passed in.
func Uint(v uint) *uint {
return &v
}
// UintValue returns the value of the uint pointer passed in or
// 0 if the pointer is nil.
func UintValue(v *uint) uint {
if v != nil {
return *v
}
return 0
}
// UintSlice converts a slice of uint values uinto a slice of
// uint pointers
func UintSlice(src []uint) []*uint {
dst := make([]*uint, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// UintValueSlice converts a slice of uint pointers uinto a slice of
// uint values
func UintValueSlice(src []*uint) []uint {
dst := make([]uint, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// UintMap converts a string map of uint values uinto a string
// map of uint pointers
func UintMap(src map[string]uint) map[string]*uint {
dst := make(map[string]*uint)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// UintValueMap converts a string map of uint pointers uinto a string
// map of uint values
func UintValueMap(src map[string]*uint) map[string]uint {
dst := make(map[string]uint)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Int8 returns a pointer to the int8 value passed in.
func Int8(v int8) *int8 {
return &v
}
// Int8Value returns the value of the int8 pointer passed in or
// 0 if the pointer is nil.
func Int8Value(v *int8) int8 {
if v != nil {
return *v
}
return 0
}
// Int8Slice converts a slice of int8 values into a slice of
// int8 pointers
func Int8Slice(src []int8) []*int8 {
dst := make([]*int8, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Int8ValueSlice converts a slice of int8 pointers into a slice of
// int8 values
func Int8ValueSlice(src []*int8) []int8 {
dst := make([]int8, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Int8Map converts a string map of int8 values into a string
// map of int8 pointers
func Int8Map(src map[string]int8) map[string]*int8 {
dst := make(map[string]*int8)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Int8ValueMap converts a string map of int8 pointers into a string
// map of int8 values
func Int8ValueMap(src map[string]*int8) map[string]int8 {
dst := make(map[string]int8)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Int16 returns a pointer to the int16 value passed in.
func Int16(v int16) *int16 {
return &v
}
// Int16Value returns the value of the int16 pointer passed in or
// 0 if the pointer is nil.
func Int16Value(v *int16) int16 {
if v != nil {
return *v
}
return 0
}
// Int16Slice converts a slice of int16 values into a slice of
// int16 pointers
func Int16Slice(src []int16) []*int16 {
dst := make([]*int16, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Int16ValueSlice converts a slice of int16 pointers into a slice of
// int16 values
func Int16ValueSlice(src []*int16) []int16 {
dst := make([]int16, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Int16Map converts a string map of int16 values into a string
// map of int16 pointers
func Int16Map(src map[string]int16) map[string]*int16 {
dst := make(map[string]*int16)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Int16ValueMap converts a string map of int16 pointers into a string
// map of int16 values
func Int16ValueMap(src map[string]*int16) map[string]int16 {
dst := make(map[string]int16)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Int32 returns a pointer to the int32 value passed in.
func Int32(v int32) *int32 {
return &v
}
// Int32Value returns the value of the int32 pointer passed in or
// 0 if the pointer is nil.
func Int32Value(v *int32) int32 {
if v != nil {
return *v
}
return 0
}
// Int32Slice converts a slice of int32 values into a slice of
// int32 pointers
func Int32Slice(src []int32) []*int32 {
dst := make([]*int32, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Int32ValueSlice converts a slice of int32 pointers into a slice of
// int32 values
func Int32ValueSlice(src []*int32) []int32 {
dst := make([]int32, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Int32Map converts a string map of int32 values into a string
// map of int32 pointers
func Int32Map(src map[string]int32) map[string]*int32 {
dst := make(map[string]*int32)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Int32ValueMap converts a string map of int32 pointers into a string
// map of int32 values
func Int32ValueMap(src map[string]*int32) map[string]int32 {
dst := make(map[string]int32)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Int64 returns a pointer to the int64 value passed in.
func Int64(v int64) *int64 {
return &v
}
// Int64Value returns the value of the int64 pointer passed in or
// 0 if the pointer is nil.
func Int64Value(v *int64) int64 {
if v != nil {
return *v
}
return 0
}
// Int64Slice converts a slice of int64 values into a slice of
// int64 pointers
func Int64Slice(src []int64) []*int64 {
dst := make([]*int64, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Int64ValueSlice converts a slice of int64 pointers into a slice of
// int64 values
func Int64ValueSlice(src []*int64) []int64 {
dst := make([]int64, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Int64Map converts a string map of int64 values into a string
// map of int64 pointers
func Int64Map(src map[string]int64) map[string]*int64 {
dst := make(map[string]*int64)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Int64ValueMap converts a string map of int64 pointers into a string
// map of int64 values
func Int64ValueMap(src map[string]*int64) map[string]int64 {
dst := make(map[string]int64)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Uint8 returns a pointer to the uint8 value passed in.
func Uint8(v uint8) *uint8 {
return &v
}
// Uint8Value returns the value of the uint8 pointer passed in or
// 0 if the pointer is nil.
func Uint8Value(v *uint8) uint8 {
if v != nil {
return *v
}
return 0
}
// Uint8Slice converts a slice of uint8 values into a slice of
// uint8 pointers
func Uint8Slice(src []uint8) []*uint8 {
dst := make([]*uint8, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Uint8ValueSlice converts a slice of uint8 pointers into a slice of
// uint8 values
func Uint8ValueSlice(src []*uint8) []uint8 {
dst := make([]uint8, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Uint8Map converts a string map of uint8 values into a string
// map of uint8 pointers
func Uint8Map(src map[string]uint8) map[string]*uint8 {
dst := make(map[string]*uint8)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Uint8ValueMap converts a string map of uint8 pointers into a string
// map of uint8 values
func Uint8ValueMap(src map[string]*uint8) map[string]uint8 {
dst := make(map[string]uint8)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Uint16 returns a pointer to the uint16 value passed in.
func Uint16(v uint16) *uint16 {
return &v
}
// Uint16Value returns the value of the uint16 pointer passed in or
// 0 if the pointer is nil.
func Uint16Value(v *uint16) uint16 {
if v != nil {
return *v
}
return 0
}
// Uint16Slice converts a slice of uint16 values into a slice of
// uint16 pointers
func Uint16Slice(src []uint16) []*uint16 {
dst := make([]*uint16, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Uint16ValueSlice converts a slice of uint16 pointers into a slice of
// uint16 values
func Uint16ValueSlice(src []*uint16) []uint16 {
dst := make([]uint16, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Uint16Map converts a string map of uint16 values into a string
// map of uint16 pointers
func Uint16Map(src map[string]uint16) map[string]*uint16 {
dst := make(map[string]*uint16)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Uint16ValueMap converts a string map of uint16 pointers into a string
// map of uint16 values
func Uint16ValueMap(src map[string]*uint16) map[string]uint16 {
dst := make(map[string]uint16)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Uint32 returns a pointer to the uint32 value passed in.
func Uint32(v uint32) *uint32 {
return &v
}
// Uint32Value returns the value of the uint32 pointer passed in or
// 0 if the pointer is nil.
func Uint32Value(v *uint32) uint32 {
if v != nil {
return *v
}
return 0
}
// Uint32Slice converts a slice of uint32 values into a slice of
// uint32 pointers
func Uint32Slice(src []uint32) []*uint32 {
dst := make([]*uint32, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Uint32ValueSlice converts a slice of uint32 pointers into a slice of
// uint32 values
func Uint32ValueSlice(src []*uint32) []uint32 {
dst := make([]uint32, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Uint32Map converts a string map of uint32 values into a string
// map of uint32 pointers
func Uint32Map(src map[string]uint32) map[string]*uint32 {
dst := make(map[string]*uint32)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Uint32ValueMap converts a string map of uint32 pointers into a string
// map of uint32 values
func Uint32ValueMap(src map[string]*uint32) map[string]uint32 {
dst := make(map[string]uint32)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Uint64 returns a pointer to the uint64 value passed in.
func Uint64(v uint64) *uint64 {
return &v
}
// Uint64Value returns the value of the uint64 pointer passed in or
// 0 if the pointer is nil.
func Uint64Value(v *uint64) uint64 {
if v != nil {
return *v
}
return 0
}
// Uint64Slice converts a slice of uint64 values into a slice of
// uint64 pointers
func Uint64Slice(src []uint64) []*uint64 {
dst := make([]*uint64, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Uint64ValueSlice converts a slice of uint64 pointers into a slice of
// uint64 values
func Uint64ValueSlice(src []*uint64) []uint64 {
dst := make([]uint64, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Uint64Map converts a string map of uint64 values into a string
// map of uint64 pointers
func Uint64Map(src map[string]uint64) map[string]*uint64 {
dst := make(map[string]*uint64)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Uint64ValueMap converts a string map of uint64 pointers into a string
// map of uint64 values
func Uint64ValueMap(src map[string]*uint64) map[string]uint64 {
dst := make(map[string]uint64)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Float32 returns a pointer to the float32 value passed in.
func Float32(v float32) *float32 {
return &v
}
// Float32Value returns the value of the float32 pointer passed in or
// 0 if the pointer is nil.
func Float32Value(v *float32) float32 {
if v != nil {
return *v
}
return 0
}
// Float32Slice converts a slice of float32 values into a slice of
// float32 pointers
func Float32Slice(src []float32) []*float32 {
dst := make([]*float32, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Float32ValueSlice converts a slice of float32 pointers into a slice of
// float32 values
func Float32ValueSlice(src []*float32) []float32 {
dst := make([]float32, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Float32Map converts a string map of float32 values into a string
// map of float32 pointers
func Float32Map(src map[string]float32) map[string]*float32 {
dst := make(map[string]*float32)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Float32ValueMap converts a string map of float32 pointers into a string
// map of float32 values
func Float32ValueMap(src map[string]*float32) map[string]float32 {
dst := make(map[string]float32)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Float64 returns a pointer to the float64 value passed in.
func Float64(v float64) *float64 {
return &v
}
// Float64Value returns the value of the float64 pointer passed in or
// 0 if the pointer is nil.
func Float64Value(v *float64) float64 {
if v != nil {
return *v
}
return 0
}
// Float64Slice converts a slice of float64 values into a slice of
// float64 pointers
func Float64Slice(src []float64) []*float64 {
dst := make([]*float64, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// Float64ValueSlice converts a slice of float64 pointers into a slice of
// float64 values
func Float64ValueSlice(src []*float64) []float64 {
dst := make([]float64, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// Float64Map converts a string map of float64 values into a string
// map of float64 pointers
func Float64Map(src map[string]float64) map[string]*float64 {
dst := make(map[string]*float64)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// Float64ValueMap converts a string map of float64 pointers into a string
// map of float64 values
func Float64ValueMap(src map[string]*float64) map[string]float64 {
dst := make(map[string]float64)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}
// Time returns a pointer to the time.Time value passed in.
func Time(v time.Time) *time.Time {
return &v
}
// TimeValue returns the value of the time.Time pointer passed in or
// time.Time{} if the pointer is nil.
func TimeValue(v *time.Time) time.Time {
if v != nil {
return *v
}
return time.Time{}
}
// SecondsTimeValue converts an int64 pointer to a time.Time value
// representing seconds since Epoch or time.Time{} if the pointer is nil.
func SecondsTimeValue(v *int64) time.Time {
if v != nil {
return time.Unix((*v / 1000), 0)
}
return time.Time{}
}
// MillisecondsTimeValue converts an int64 pointer to a time.Time value
// representing milliseconds sinch Epoch or time.Time{} if the pointer is nil.
func MillisecondsTimeValue(v *int64) time.Time {
if v != nil {
return time.Unix(0, (*v * 1000000))
}
return time.Time{}
}
// TimeUnixMilli returns a Unix timestamp in milliseconds from "January 1, 1970 UTC".
// The result is undefined if the Unix time cannot be represented by an int64.
// Which includes calling TimeUnixMilli on a zero Time is undefined.
//
// This utility is useful for service API's such as CloudWatch Logs which require
// their unix time values to be in milliseconds.
//
// See Go stdlib https://golang.org/pkg/time/#Time.UnixNano for more information.
func TimeUnixMilli(t time.Time) int64 {
return t.UnixNano() / int64(time.Millisecond/time.Nanosecond)
}
// TimeSlice converts a slice of time.Time values into a slice of
// time.Time pointers
func TimeSlice(src []time.Time) []*time.Time {
dst := make([]*time.Time, len(src))
for i := 0; i < len(src); i++ {
dst[i] = &(src[i])
}
return dst
}
// TimeValueSlice converts a slice of time.Time pointers into a slice of
// time.Time values
func TimeValueSlice(src []*time.Time) []time.Time {
dst := make([]time.Time, len(src))
for i := 0; i < len(src); i++ {
if src[i] != nil {
dst[i] = *(src[i])
}
}
return dst
}
// TimeMap converts a string map of time.Time values into a string
// map of time.Time pointers
func TimeMap(src map[string]time.Time) map[string]*time.Time {
dst := make(map[string]*time.Time)
for k, val := range src {
v := val
dst[k] = &v
}
return dst
}
// TimeValueMap converts a string map of time.Time pointers into a string
// map of time.Time values
func TimeValueMap(src map[string]*time.Time) map[string]time.Time {
dst := make(map[string]time.Time)
for k, val := range src {
if val != nil {
dst[k] = *val
}
}
return dst
}

4
vendor/github.com/aws/aws-sdk-go/aws/corehandlers/awsinternal.go generated vendored Normal file
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@ -0,0 +1,4 @@
// DO NOT EDIT
package corehandlers
const isAwsInternal = ""

232
vendor/github.com/aws/aws-sdk-go/aws/corehandlers/handlers.go generated vendored Normal file
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@ -0,0 +1,232 @@
package corehandlers
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"regexp"
"strconv"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/request"
)
// Interface for matching types which also have a Len method.
type lener interface {
Len() int
}
// BuildContentLengthHandler builds the content length of a request based on the body,
// or will use the HTTPRequest.Header's "Content-Length" if defined. If unable
// to determine request body length and no "Content-Length" was specified it will panic.
//
// The Content-Length will only be added to the request if the length of the body
// is greater than 0. If the body is empty or the current `Content-Length`
// header is <= 0, the header will also be stripped.
var BuildContentLengthHandler = request.NamedHandler{Name: "core.BuildContentLengthHandler", Fn: func(r *request.Request) {
var length int64
if slength := r.HTTPRequest.Header.Get("Content-Length"); slength != "" {
length, _ = strconv.ParseInt(slength, 10, 64)
} else {
if r.Body != nil {
var err error
length, err = aws.SeekerLen(r.Body)
if err != nil {
r.Error = awserr.New(request.ErrCodeSerialization, "failed to get request body's length", err)
return
}
}
}
if length > 0 {
r.HTTPRequest.ContentLength = length
r.HTTPRequest.Header.Set("Content-Length", fmt.Sprintf("%d", length))
} else {
r.HTTPRequest.ContentLength = 0
r.HTTPRequest.Header.Del("Content-Length")
}
}}
var reStatusCode = regexp.MustCompile(`^(\d{3})`)
// ValidateReqSigHandler is a request handler to ensure that the request's
// signature doesn't expire before it is sent. This can happen when a request
// is built and signed significantly before it is sent. Or significant delays
// occur when retrying requests that would cause the signature to expire.
var ValidateReqSigHandler = request.NamedHandler{
Name: "core.ValidateReqSigHandler",
Fn: func(r *request.Request) {
// Unsigned requests are not signed
if r.Config.Credentials == credentials.AnonymousCredentials {
return
}
signedTime := r.Time
if !r.LastSignedAt.IsZero() {
signedTime = r.LastSignedAt
}
// 5 minutes to allow for some clock skew/delays in transmission.
// Would be improved with aws/aws-sdk-go#423
if signedTime.Add(5 * time.Minute).After(time.Now()) {
return
}
fmt.Println("request expired, resigning")
r.Sign()
},
}
// SendHandler is a request handler to send service request using HTTP client.
var SendHandler = request.NamedHandler{
Name: "core.SendHandler",
Fn: func(r *request.Request) {
sender := sendFollowRedirects
if r.DisableFollowRedirects {
sender = sendWithoutFollowRedirects
}
if request.NoBody == r.HTTPRequest.Body {
// Strip off the request body if the NoBody reader was used as a
// place holder for a request body. This prevents the SDK from
// making requests with a request body when it would be invalid
// to do so.
//
// Use a shallow copy of the http.Request to ensure the race condition
// of transport on Body will not trigger
reqOrig, reqCopy := r.HTTPRequest, *r.HTTPRequest
reqCopy.Body = nil
r.HTTPRequest = &reqCopy
defer func() {
r.HTTPRequest = reqOrig
}()
}
var err error
r.HTTPResponse, err = sender(r)
if err != nil {
handleSendError(r, err)
}
},
}
func sendFollowRedirects(r *request.Request) (*http.Response, error) {
return r.Config.HTTPClient.Do(r.HTTPRequest)
}
func sendWithoutFollowRedirects(r *request.Request) (*http.Response, error) {
transport := r.Config.HTTPClient.Transport
if transport == nil {
transport = http.DefaultTransport
}
return transport.RoundTrip(r.HTTPRequest)
}
func handleSendError(r *request.Request, err error) {
// Prevent leaking if an HTTPResponse was returned. Clean up
// the body.
if r.HTTPResponse != nil {
r.HTTPResponse.Body.Close()
}
// Capture the case where url.Error is returned for error processing
// response. e.g. 301 without location header comes back as string
// error and r.HTTPResponse is nil. Other URL redirect errors will
// comeback in a similar method.
if e, ok := err.(*url.Error); ok && e.Err != nil {
if s := reStatusCode.FindStringSubmatch(e.Err.Error()); s != nil {
code, _ := strconv.ParseInt(s[1], 10, 64)
r.HTTPResponse = &http.Response{
StatusCode: int(code),
Status: http.StatusText(int(code)),
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}
return
}
}
if r.HTTPResponse == nil {
// Add a dummy request response object to ensure the HTTPResponse
// value is consistent.
r.HTTPResponse = &http.Response{
StatusCode: int(0),
Status: http.StatusText(int(0)),
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}
}
// Catch all request errors, and let the default retrier determine
// if the error is retryable.
r.Error = awserr.New(request.ErrCodeRequestError, "send request failed", err)
// Override the error with a context canceled error, if that was canceled.
ctx := r.Context()
select {
case <-ctx.Done():
r.Error = awserr.New(request.CanceledErrorCode,
"request context canceled", ctx.Err())
r.Retryable = aws.Bool(false)
default:
}
}
// ValidateResponseHandler is a request handler to validate service response.
var ValidateResponseHandler = request.NamedHandler{Name: "core.ValidateResponseHandler", Fn: func(r *request.Request) {
if r.HTTPResponse.StatusCode == 0 || r.HTTPResponse.StatusCode >= 300 {
// this may be replaced by an UnmarshalError handler
r.Error = awserr.New("UnknownError", "unknown error", r.Error)
}
}}
// AfterRetryHandler performs final checks to determine if the request should
// be retried and how long to delay.
var AfterRetryHandler = request.NamedHandler{
Name: "core.AfterRetryHandler",
Fn: func(r *request.Request) {
// If one of the other handlers already set the retry state
// we don't want to override it based on the service's state
if r.Retryable == nil || aws.BoolValue(r.Config.EnforceShouldRetryCheck) {
r.Retryable = aws.Bool(r.ShouldRetry(r))
}
if r.WillRetry() {
r.RetryDelay = r.RetryRules(r)
if sleepFn := r.Config.SleepDelay; sleepFn != nil {
// Support SleepDelay for backwards compatibility and testing
sleepFn(r.RetryDelay)
} else if err := aws.SleepWithContext(r.Context(), r.RetryDelay); err != nil {
r.Error = awserr.New(request.CanceledErrorCode,
"request context canceled", err)
r.Retryable = aws.Bool(false)
return
}
// when the expired token exception occurs the credentials
// need to be expired locally so that the next request to
// get credentials will trigger a credentials refresh.
if r.IsErrorExpired() {
r.Config.Credentials.Expire()
}
r.RetryCount++
r.Error = nil
}
}}
// ValidateEndpointHandler is a request handler to validate a request had the
// appropriate Region and Endpoint set. Will set r.Error if the endpoint or
// region is not valid.
var ValidateEndpointHandler = request.NamedHandler{Name: "core.ValidateEndpointHandler", Fn: func(r *request.Request) {
if r.ClientInfo.SigningRegion == "" && aws.StringValue(r.Config.Region) == "" {
r.Error = aws.ErrMissingRegion
} else if r.ClientInfo.Endpoint == "" {
// Was any endpoint provided by the user, or one was derived by the
// SDK's endpoint resolver?
r.Error = aws.ErrMissingEndpoint
}
}}

17
vendor/github.com/aws/aws-sdk-go/aws/corehandlers/param_validator.go generated vendored Normal file
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@ -0,0 +1,17 @@
package corehandlers
import "github.com/aws/aws-sdk-go/aws/request"
// ValidateParametersHandler is a request handler to validate the input parameters.
// Validating parameters only has meaning if done prior to the request being sent.
var ValidateParametersHandler = request.NamedHandler{Name: "core.ValidateParametersHandler", Fn: func(r *request.Request) {
if !r.ParamsFilled() {
return
}
if v, ok := r.Params.(request.Validator); ok {
if err := v.Validate(); err != nil {
r.Error = err
}
}
}}

47
vendor/github.com/aws/aws-sdk-go/aws/corehandlers/user_agent.go generated vendored Normal file
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@ -0,0 +1,47 @@
package corehandlers
import (
"os"
"runtime"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/request"
)
// SDKVersionUserAgentHandler is a request handler for adding the SDK Version
// to the user agent.
var SDKVersionUserAgentHandler = request.NamedHandler{
Name: "core.SDKVersionUserAgentHandler",
Fn: request.MakeAddToUserAgentHandler(aws.SDKName, aws.SDKVersion,
runtime.Version(), runtime.GOOS, runtime.GOARCH),
}
const execEnvVar = `AWS_EXECUTION_ENV`
const execEnvUAKey = `exec-env`
// AddHostExecEnvUserAgentHander is a request handler appending the SDK's
// execution environment to the user agent.
//
// If the environment variable AWS_EXECUTION_ENV is set, its value will be
// appended to the user agent string.
var AddHostExecEnvUserAgentHander = request.NamedHandler{
Name: "core.AddHostExecEnvUserAgentHander",
Fn: func(r *request.Request) {
v := os.Getenv(execEnvVar)
if len(v) == 0 {
return
}
request.AddToUserAgent(r, execEnvUAKey+"/"+v)
},
}
var AddAwsInternal = request.NamedHandler{
Name: "core.AddAwsInternal",
Fn: func(r *request.Request) {
if len(isAwsInternal) == 0 {
return
}
request.AddToUserAgent(r, isAwsInternal)
},
}

100
vendor/github.com/aws/aws-sdk-go/aws/credentials/chain_provider.go generated vendored Normal file
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@ -0,0 +1,100 @@
package credentials
import (
"github.com/aws/aws-sdk-go/aws/awserr"
)
var (
// ErrNoValidProvidersFoundInChain Is returned when there are no valid
// providers in the ChainProvider.
//
// This has been deprecated. For verbose error messaging set
// aws.Config.CredentialsChainVerboseErrors to true.
ErrNoValidProvidersFoundInChain = awserr.New("NoCredentialProviders",
`no valid providers in chain. Deprecated.
For verbose messaging see aws.Config.CredentialsChainVerboseErrors`,
nil)
)
// A ChainProvider will search for a provider which returns credentials
// and cache that provider until Retrieve is called again.
//
// The ChainProvider provides a way of chaining multiple providers together
// which will pick the first available using priority order of the Providers
// in the list.
//
// If none of the Providers retrieve valid credentials Value, ChainProvider's
// Retrieve() will return the error ErrNoValidProvidersFoundInChain.
//
// If a Provider is found which returns valid credentials Value ChainProvider
// will cache that Provider for all calls to IsExpired(), until Retrieve is
// called again.
//
// Example of ChainProvider to be used with an EnvProvider and EC2RoleProvider.
// In this example EnvProvider will first check if any credentials are available
// via the environment variables. If there are none ChainProvider will check
// the next Provider in the list, EC2RoleProvider in this case. If EC2RoleProvider
// does not return any credentials ChainProvider will return the error
// ErrNoValidProvidersFoundInChain
//
// creds := credentials.NewChainCredentials(
// []credentials.Provider{
// &credentials.EnvProvider{},
// &ec2rolecreds.EC2RoleProvider{
// Client: ec2metadata.New(sess),
// },
// })
//
// // Usage of ChainCredentials with aws.Config
// svc := ec2.New(session.Must(session.NewSession(&aws.Config{
// Credentials: creds,
// })))
//
type ChainProvider struct {
Providers []Provider
curr Provider
VerboseErrors bool
}
// NewChainCredentials returns a pointer to a new Credentials object
// wrapping a chain of providers.
func NewChainCredentials(providers []Provider) *Credentials {
return NewCredentials(&ChainProvider{
Providers: append([]Provider{}, providers...),
})
}
// Retrieve returns the credentials value or error if no provider returned
// without error.
//
// If a provider is found it will be cached and any calls to IsExpired()
// will return the expired state of the cached provider.
func (c *ChainProvider) Retrieve() (Value, error) {
var errs []error
for _, p := range c.Providers {
creds, err := p.Retrieve()
if err == nil {
c.curr = p
return creds, nil
}
errs = append(errs, err)
}
c.curr = nil
var err error
err = ErrNoValidProvidersFoundInChain
if c.VerboseErrors {
err = awserr.NewBatchError("NoCredentialProviders", "no valid providers in chain", errs)
}
return Value{}, err
}
// IsExpired will returned the expired state of the currently cached provider
// if there is one. If there is no current provider, true will be returned.
func (c *ChainProvider) IsExpired() bool {
if c.curr != nil {
return c.curr.IsExpired()
}
return true
}

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//go:build !go1.7
// +build !go1.7
package credentials
import (
"github.com/aws/aws-sdk-go/internal/context"
)
// backgroundContext returns a context that will never be canceled, has no
// values, and no deadline. This context is used by the SDK to provide
// backwards compatibility with non-context API operations and functionality.
//
// Go 1.6 and before:
// This context function is equivalent to context.Background in the Go stdlib.
//
// Go 1.7 and later:
// The context returned will be the value returned by context.Background()
//
// See https://golang.org/pkg/context for more information on Contexts.
func backgroundContext() Context {
return context.BackgroundCtx
}

21
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//go:build go1.7
// +build go1.7
package credentials
import "context"
// backgroundContext returns a context that will never be canceled, has no
// values, and no deadline. This context is used by the SDK to provide
// backwards compatibility with non-context API operations and functionality.
//
// Go 1.6 and before:
// This context function is equivalent to context.Background in the Go stdlib.
//
// Go 1.7 and later:
// The context returned will be the value returned by context.Background()
//
// See https://golang.org/pkg/context for more information on Contexts.
func backgroundContext() Context {
return context.Background()
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/context_go1.5.go generated vendored Normal file
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//go:build !go1.9
// +build !go1.9
package credentials
import "time"
// Context is an copy of the Go v1.7 stdlib's context.Context interface.
// It is represented as a SDK interface to enable you to use the "WithContext"
// API methods with Go v1.6 and a Context type such as golang.org/x/net/context.
//
// This type, aws.Context, and context.Context are equivalent.
//
// See https://golang.org/pkg/context on how to use contexts.
type Context interface {
// Deadline returns the time when work done on behalf of this context
// should be canceled. Deadline returns ok==false when no deadline is
// set. Successive calls to Deadline return the same results.
Deadline() (deadline time.Time, ok bool)
// Done returns a channel that's closed when work done on behalf of this
// context should be canceled. Done may return nil if this context can
// never be canceled. Successive calls to Done return the same value.
Done() <-chan struct{}
// Err returns a non-nil error value after Done is closed. Err returns
// Canceled if the context was canceled or DeadlineExceeded if the
// context's deadline passed. No other values for Err are defined.
// After Done is closed, successive calls to Err return the same value.
Err() error
// Value returns the value associated with this context for key, or nil
// if no value is associated with key. Successive calls to Value with
// the same key returns the same result.
//
// Use context values only for request-scoped data that transits
// processes and API boundaries, not for passing optional parameters to
// functions.
Value(key interface{}) interface{}
}

14
vendor/github.com/aws/aws-sdk-go/aws/credentials/context_go1.9.go generated vendored Normal file
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//go:build go1.9
// +build go1.9
package credentials
import "context"
// Context is an alias of the Go stdlib's context.Context interface.
// It can be used within the SDK's API operation "WithContext" methods.
//
// This type, aws.Context, and context.Context are equivalent.
//
// See https://golang.org/pkg/context on how to use contexts.
type Context = context.Context

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// Package credentials provides credential retrieval and management
//
// The Credentials is the primary method of getting access to and managing
// credentials Values. Using dependency injection retrieval of the credential
// values is handled by a object which satisfies the Provider interface.
//
// By default the Credentials.Get() will cache the successful result of a
// Provider's Retrieve() until Provider.IsExpired() returns true. At which
// point Credentials will call Provider's Retrieve() to get new credential Value.
//
// The Provider is responsible for determining when credentials Value have expired.
// It is also important to note that Credentials will always call Retrieve the
// first time Credentials.Get() is called.
//
// Example of using the environment variable credentials.
//
// creds := credentials.NewEnvCredentials()
//
// // Retrieve the credentials value
// credValue, err := creds.Get()
// if err != nil {
// // handle error
// }
//
// Example of forcing credentials to expire and be refreshed on the next Get().
// This may be helpful to proactively expire credentials and refresh them sooner
// than they would naturally expire on their own.
//
// creds := credentials.NewCredentials(&ec2rolecreds.EC2RoleProvider{})
// creds.Expire()
// credsValue, err := creds.Get()
// // New credentials will be retrieved instead of from cache.
//
//
// Custom Provider
//
// Each Provider built into this package also provides a helper method to generate
// a Credentials pointer setup with the provider. To use a custom Provider just
// create a type which satisfies the Provider interface and pass it to the
// NewCredentials method.
//
// type MyProvider struct{}
// func (m *MyProvider) Retrieve() (Value, error) {...}
// func (m *MyProvider) IsExpired() bool {...}
//
// creds := credentials.NewCredentials(&MyProvider{})
// credValue, err := creds.Get()
//
package credentials
import (
"fmt"
"sync"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/internal/sync/singleflight"
)
// AnonymousCredentials is an empty Credential object that can be used as
// dummy placeholder credentials for requests that do not need signed.
//
// This Credentials can be used to configure a service to not sign requests
// when making service API calls. For example, when accessing public
// s3 buckets.
//
// svc := s3.New(session.Must(session.NewSession(&aws.Config{
// Credentials: credentials.AnonymousCredentials,
// })))
// // Access public S3 buckets.
var AnonymousCredentials = NewStaticCredentials("", "", "")
// A Value is the AWS credentials value for individual credential fields.
type Value struct {
// AWS Access key ID
AccessKeyID string
// AWS Secret Access Key
SecretAccessKey string
// AWS Session Token
SessionToken string
// Provider used to get credentials
ProviderName string
}
// HasKeys returns if the credentials Value has both AccessKeyID and
// SecretAccessKey value set.
func (v Value) HasKeys() bool {
return len(v.AccessKeyID) != 0 && len(v.SecretAccessKey) != 0
}
// A Provider is the interface for any component which will provide credentials
// Value. A provider is required to manage its own Expired state, and what to
// be expired means.
//
// The Provider should not need to implement its own mutexes, because
// that will be managed by Credentials.
type Provider interface {
// Retrieve returns nil if it successfully retrieved the value.
// Error is returned if the value were not obtainable, or empty.
Retrieve() (Value, error)
// IsExpired returns if the credentials are no longer valid, and need
// to be retrieved.
IsExpired() bool
}
// ProviderWithContext is a Provider that can retrieve credentials with a Context
type ProviderWithContext interface {
Provider
RetrieveWithContext(Context) (Value, error)
}
// An Expirer is an interface that Providers can implement to expose the expiration
// time, if known. If the Provider cannot accurately provide this info,
// it should not implement this interface.
type Expirer interface {
// The time at which the credentials are no longer valid
ExpiresAt() time.Time
}
// An ErrorProvider is a stub credentials provider that always returns an error
// this is used by the SDK when construction a known provider is not possible
// due to an error.
type ErrorProvider struct {
// The error to be returned from Retrieve
Err error
// The provider name to set on the Retrieved returned Value
ProviderName string
}
// Retrieve will always return the error that the ErrorProvider was created with.
func (p ErrorProvider) Retrieve() (Value, error) {
return Value{ProviderName: p.ProviderName}, p.Err
}
// IsExpired will always return not expired.
func (p ErrorProvider) IsExpired() bool {
return false
}
// A Expiry provides shared expiration logic to be used by credentials
// providers to implement expiry functionality.
//
// The best method to use this struct is as an anonymous field within the
// provider's struct.
//
// Example:
// type EC2RoleProvider struct {
// Expiry
// ...
// }
type Expiry struct {
// The date/time when to expire on
expiration time.Time
// If set will be used by IsExpired to determine the current time.
// Defaults to time.Now if CurrentTime is not set. Available for testing
// to be able to mock out the current time.
CurrentTime func() time.Time
}
// SetExpiration sets the expiration IsExpired will check when called.
//
// If window is greater than 0 the expiration time will be reduced by the
// window value.
//
// Using a window is helpful to trigger credentials to expire sooner than
// the expiration time given to ensure no requests are made with expired
// tokens.
func (e *Expiry) SetExpiration(expiration time.Time, window time.Duration) {
// Passed in expirations should have the monotonic clock values stripped.
// This ensures time comparisons will be based on wall-time.
e.expiration = expiration.Round(0)
if window > 0 {
e.expiration = e.expiration.Add(-window)
}
}
// IsExpired returns if the credentials are expired.
func (e *Expiry) IsExpired() bool {
curTime := e.CurrentTime
if curTime == nil {
curTime = time.Now
}
return e.expiration.Before(curTime())
}
// ExpiresAt returns the expiration time of the credential
func (e *Expiry) ExpiresAt() time.Time {
return e.expiration
}
// A Credentials provides concurrency safe retrieval of AWS credentials Value.
// Credentials will cache the credentials value until they expire. Once the value
// expires the next Get will attempt to retrieve valid credentials.
//
// Credentials is safe to use across multiple goroutines and will manage the
// synchronous state so the Providers do not need to implement their own
// synchronization.
//
// The first Credentials.Get() will always call Provider.Retrieve() to get the
// first instance of the credentials Value. All calls to Get() after that
// will return the cached credentials Value until IsExpired() returns true.
type Credentials struct {
sf singleflight.Group
m sync.RWMutex
creds Value
provider Provider
}
// NewCredentials returns a pointer to a new Credentials with the provider set.
func NewCredentials(provider Provider) *Credentials {
c := &Credentials{
provider: provider,
}
return c
}
// GetWithContext returns the credentials value, or error if the credentials
// Value failed to be retrieved. Will return early if the passed in context is
// canceled.
//
// Will return the cached credentials Value if it has not expired. If the
// credentials Value has expired the Provider's Retrieve() will be called
// to refresh the credentials.
//
// If Credentials.Expire() was called the credentials Value will be force
// expired, and the next call to Get() will cause them to be refreshed.
//
// Passed in Context is equivalent to aws.Context, and context.Context.
func (c *Credentials) GetWithContext(ctx Context) (Value, error) {
// Check if credentials are cached, and not expired.
select {
case curCreds, ok := <-c.asyncIsExpired():
// ok will only be true, of the credentials were not expired. ok will
// be false and have no value if the credentials are expired.
if ok {
return curCreds, nil
}
case <-ctx.Done():
return Value{}, awserr.New("RequestCanceled",
"request context canceled", ctx.Err())
}
// Cannot pass context down to the actual retrieve, because the first
// context would cancel the whole group when there is not direct
// association of items in the group.
resCh := c.sf.DoChan("", func() (interface{}, error) {
return c.singleRetrieve(&suppressedContext{ctx})
})
select {
case res := <-resCh:
return res.Val.(Value), res.Err
case <-ctx.Done():
return Value{}, awserr.New("RequestCanceled",
"request context canceled", ctx.Err())
}
}
func (c *Credentials) singleRetrieve(ctx Context) (interface{}, error) {
c.m.Lock()
defer c.m.Unlock()
if curCreds := c.creds; !c.isExpiredLocked(curCreds) {
return curCreds, nil
}
var creds Value
var err error
if p, ok := c.provider.(ProviderWithContext); ok {
creds, err = p.RetrieveWithContext(ctx)
} else {
creds, err = c.provider.Retrieve()
}
if err == nil {
c.creds = creds
}
return creds, err
}
// Get returns the credentials value, or error if the credentials Value failed
// to be retrieved.
//
// Will return the cached credentials Value if it has not expired. If the
// credentials Value has expired the Provider's Retrieve() will be called
// to refresh the credentials.
//
// If Credentials.Expire() was called the credentials Value will be force
// expired, and the next call to Get() will cause them to be refreshed.
func (c *Credentials) Get() (Value, error) {
return c.GetWithContext(backgroundContext())
}
// Expire expires the credentials and forces them to be retrieved on the
// next call to Get().
//
// This will override the Provider's expired state, and force Credentials
// to call the Provider's Retrieve().
func (c *Credentials) Expire() {
c.m.Lock()
defer c.m.Unlock()
c.creds = Value{}
}
// IsExpired returns if the credentials are no longer valid, and need
// to be retrieved.
//
// If the Credentials were forced to be expired with Expire() this will
// reflect that override.
func (c *Credentials) IsExpired() bool {
c.m.RLock()
defer c.m.RUnlock()
return c.isExpiredLocked(c.creds)
}
// asyncIsExpired returns a channel of credentials Value. If the channel is
// closed the credentials are expired and credentials value are not empty.
func (c *Credentials) asyncIsExpired() <-chan Value {
ch := make(chan Value, 1)
go func() {
c.m.RLock()
defer c.m.RUnlock()
if curCreds := c.creds; !c.isExpiredLocked(curCreds) {
ch <- curCreds
}
close(ch)
}()
return ch
}
// isExpiredLocked helper method wrapping the definition of expired credentials.
func (c *Credentials) isExpiredLocked(creds interface{}) bool {
return creds == nil || creds.(Value) == Value{} || c.provider.IsExpired()
}
// ExpiresAt provides access to the functionality of the Expirer interface of
// the underlying Provider, if it supports that interface. Otherwise, it returns
// an error.
func (c *Credentials) ExpiresAt() (time.Time, error) {
c.m.RLock()
defer c.m.RUnlock()
expirer, ok := c.provider.(Expirer)
if !ok {
return time.Time{}, awserr.New("ProviderNotExpirer",
fmt.Sprintf("provider %s does not support ExpiresAt()",
c.creds.ProviderName),
nil)
}
if c.creds == (Value{}) {
// set expiration time to the distant past
return time.Time{}, nil
}
return expirer.ExpiresAt(), nil
}
type suppressedContext struct {
Context
}
func (s *suppressedContext) Deadline() (deadline time.Time, ok bool) {
return time.Time{}, false
}
func (s *suppressedContext) Done() <-chan struct{} {
return nil
}
func (s *suppressedContext) Err() error {
return nil
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds/ec2_role_provider.go generated vendored Normal file
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package ec2rolecreds
import (
"bufio"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/sdkuri"
)
// ProviderName provides a name of EC2Role provider
const ProviderName = "EC2RoleProvider"
// A EC2RoleProvider retrieves credentials from the EC2 service, and keeps track if
// those credentials are expired.
//
// Example how to configure the EC2RoleProvider with custom http Client, Endpoint
// or ExpiryWindow
//
// p := &ec2rolecreds.EC2RoleProvider{
// // Pass in a custom timeout to be used when requesting
// // IAM EC2 Role credentials.
// Client: ec2metadata.New(sess, aws.Config{
// HTTPClient: &http.Client{Timeout: 10 * time.Second},
// }),
//
// // Do not use early expiry of credentials. If a non zero value is
// // specified the credentials will be expired early
// ExpiryWindow: 0,
// }
type EC2RoleProvider struct {
credentials.Expiry
// Required EC2Metadata client to use when connecting to EC2 metadata service.
Client *ec2metadata.EC2Metadata
// ExpiryWindow will allow the credentials to trigger refreshing prior to
// the credentials actually expiring. This is beneficial so race conditions
// with expiring credentials do not cause request to fail unexpectedly
// due to ExpiredTokenException exceptions.
//
// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
// 10 seconds before the credentials are actually expired.
//
// If ExpiryWindow is 0 or less it will be ignored.
ExpiryWindow time.Duration
}
// NewCredentials returns a pointer to a new Credentials object wrapping
// the EC2RoleProvider. Takes a ConfigProvider to create a EC2Metadata client.
// The ConfigProvider is satisfied by the session.Session type.
func NewCredentials(c client.ConfigProvider, options ...func(*EC2RoleProvider)) *credentials.Credentials {
p := &EC2RoleProvider{
Client: ec2metadata.New(c),
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// NewCredentialsWithClient returns a pointer to a new Credentials object wrapping
// the EC2RoleProvider. Takes a EC2Metadata client to use when connecting to EC2
// metadata service.
func NewCredentialsWithClient(client *ec2metadata.EC2Metadata, options ...func(*EC2RoleProvider)) *credentials.Credentials {
p := &EC2RoleProvider{
Client: client,
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// Retrieve retrieves credentials from the EC2 service.
// Error will be returned if the request fails, or unable to extract
// the desired credentials.
func (m *EC2RoleProvider) Retrieve() (credentials.Value, error) {
return m.RetrieveWithContext(aws.BackgroundContext())
}
// RetrieveWithContext retrieves credentials from the EC2 service.
// Error will be returned if the request fails, or unable to extract
// the desired credentials.
func (m *EC2RoleProvider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
credsList, err := requestCredList(ctx, m.Client)
if err != nil {
return credentials.Value{ProviderName: ProviderName}, err
}
if len(credsList) == 0 {
return credentials.Value{ProviderName: ProviderName}, awserr.New("EmptyEC2RoleList", "empty EC2 Role list", nil)
}
credsName := credsList[0]
roleCreds, err := requestCred(ctx, m.Client, credsName)
if err != nil {
return credentials.Value{ProviderName: ProviderName}, err
}
m.SetExpiration(roleCreds.Expiration, m.ExpiryWindow)
return credentials.Value{
AccessKeyID: roleCreds.AccessKeyID,
SecretAccessKey: roleCreds.SecretAccessKey,
SessionToken: roleCreds.Token,
ProviderName: ProviderName,
}, nil
}
// A ec2RoleCredRespBody provides the shape for unmarshaling credential
// request responses.
type ec2RoleCredRespBody struct {
// Success State
Expiration time.Time
AccessKeyID string
SecretAccessKey string
Token string
// Error state
Code string
Message string
}
const iamSecurityCredsPath = "iam/security-credentials/"
// requestCredList requests a list of credentials from the EC2 service.
// If there are no credentials, or there is an error making or receiving the request
func requestCredList(ctx aws.Context, client *ec2metadata.EC2Metadata) ([]string, error) {
resp, err := client.GetMetadataWithContext(ctx, iamSecurityCredsPath)
if err != nil {
return nil, awserr.New("EC2RoleRequestError", "no EC2 instance role found", err)
}
credsList := []string{}
s := bufio.NewScanner(strings.NewReader(resp))
for s.Scan() {
credsList = append(credsList, s.Text())
}
if err := s.Err(); err != nil {
return nil, awserr.New(request.ErrCodeSerialization,
"failed to read EC2 instance role from metadata service", err)
}
return credsList, nil
}
// requestCred requests the credentials for a specific credentials from the EC2 service.
//
// If the credentials cannot be found, or there is an error reading the response
// and error will be returned.
func requestCred(ctx aws.Context, client *ec2metadata.EC2Metadata, credsName string) (ec2RoleCredRespBody, error) {
resp, err := client.GetMetadataWithContext(ctx, sdkuri.PathJoin(iamSecurityCredsPath, credsName))
if err != nil {
return ec2RoleCredRespBody{},
awserr.New("EC2RoleRequestError",
fmt.Sprintf("failed to get %s EC2 instance role credentials", credsName),
err)
}
respCreds := ec2RoleCredRespBody{}
if err := json.NewDecoder(strings.NewReader(resp)).Decode(&respCreds); err != nil {
return ec2RoleCredRespBody{},
awserr.New(request.ErrCodeSerialization,
fmt.Sprintf("failed to decode %s EC2 instance role credentials", credsName),
err)
}
if respCreds.Code != "Success" {
// If an error code was returned something failed requesting the role.
return ec2RoleCredRespBody{}, awserr.New(respCreds.Code, respCreds.Message, nil)
}
return respCreds, nil
}

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// Package endpointcreds provides support for retrieving credentials from an
// arbitrary HTTP endpoint.
//
// The credentials endpoint Provider can receive both static and refreshable
// credentials that will expire. Credentials are static when an "Expiration"
// value is not provided in the endpoint's response.
//
// Static credentials will never expire once they have been retrieved. The format
// of the static credentials response:
// {
// "AccessKeyId" : "MUA...",
// "SecretAccessKey" : "/7PC5om....",
// }
//
// Refreshable credentials will expire within the "ExpiryWindow" of the Expiration
// value in the response. The format of the refreshable credentials response:
// {
// "AccessKeyId" : "MUA...",
// "SecretAccessKey" : "/7PC5om....",
// "Token" : "AQoDY....=",
// "Expiration" : "2016-02-25T06:03:31Z"
// }
//
// Errors should be returned in the following format and only returned with 400
// or 500 HTTP status codes.
// {
// "code": "ErrorCode",
// "message": "Helpful error message."
// }
package endpointcreds
import (
"encoding/json"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/client/metadata"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/private/protocol/json/jsonutil"
)
// ProviderName is the name of the credentials provider.
const ProviderName = `CredentialsEndpointProvider`
// Provider satisfies the credentials.Provider interface, and is a client to
// retrieve credentials from an arbitrary endpoint.
type Provider struct {
staticCreds bool
credentials.Expiry
// Requires a AWS Client to make HTTP requests to the endpoint with.
// the Endpoint the request will be made to is provided by the aws.Config's
// Endpoint value.
Client *client.Client
// ExpiryWindow will allow the credentials to trigger refreshing prior to
// the credentials actually expiring. This is beneficial so race conditions
// with expiring credentials do not cause request to fail unexpectedly
// due to ExpiredTokenException exceptions.
//
// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
// 10 seconds before the credentials are actually expired.
//
// If ExpiryWindow is 0 or less it will be ignored.
ExpiryWindow time.Duration
// Optional authorization token value if set will be used as the value of
// the Authorization header of the endpoint credential request.
AuthorizationToken string
}
// NewProviderClient returns a credentials Provider for retrieving AWS credentials
// from arbitrary endpoint.
func NewProviderClient(cfg aws.Config, handlers request.Handlers, endpoint string, options ...func(*Provider)) credentials.Provider {
p := &Provider{
Client: client.New(
cfg,
metadata.ClientInfo{
ServiceName: "CredentialsEndpoint",
Endpoint: endpoint,
},
handlers,
),
}
p.Client.Handlers.Unmarshal.PushBack(unmarshalHandler)
p.Client.Handlers.UnmarshalError.PushBack(unmarshalError)
p.Client.Handlers.Validate.Clear()
p.Client.Handlers.Validate.PushBack(validateEndpointHandler)
for _, option := range options {
option(p)
}
return p
}
// NewCredentialsClient returns a pointer to a new Credentials object
// wrapping the endpoint credentials Provider.
func NewCredentialsClient(cfg aws.Config, handlers request.Handlers, endpoint string, options ...func(*Provider)) *credentials.Credentials {
return credentials.NewCredentials(NewProviderClient(cfg, handlers, endpoint, options...))
}
// IsExpired returns true if the credentials retrieved are expired, or not yet
// retrieved.
func (p *Provider) IsExpired() bool {
if p.staticCreds {
return false
}
return p.Expiry.IsExpired()
}
// Retrieve will attempt to request the credentials from the endpoint the Provider
// was configured for. And error will be returned if the retrieval fails.
func (p *Provider) Retrieve() (credentials.Value, error) {
return p.RetrieveWithContext(aws.BackgroundContext())
}
// RetrieveWithContext will attempt to request the credentials from the endpoint the Provider
// was configured for. And error will be returned if the retrieval fails.
func (p *Provider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
resp, err := p.getCredentials(ctx)
if err != nil {
return credentials.Value{ProviderName: ProviderName},
awserr.New("CredentialsEndpointError", "failed to load credentials", err)
}
if resp.Expiration != nil {
p.SetExpiration(*resp.Expiration, p.ExpiryWindow)
} else {
p.staticCreds = true
}
return credentials.Value{
AccessKeyID: resp.AccessKeyID,
SecretAccessKey: resp.SecretAccessKey,
SessionToken: resp.Token,
ProviderName: ProviderName,
}, nil
}
type getCredentialsOutput struct {
Expiration *time.Time
AccessKeyID string
SecretAccessKey string
Token string
}
type errorOutput struct {
Code string `json:"code"`
Message string `json:"message"`
}
func (p *Provider) getCredentials(ctx aws.Context) (*getCredentialsOutput, error) {
op := &request.Operation{
Name: "GetCredentials",
HTTPMethod: "GET",
}
out := &getCredentialsOutput{}
req := p.Client.NewRequest(op, nil, out)
req.SetContext(ctx)
req.HTTPRequest.Header.Set("Accept", "application/json")
if authToken := p.AuthorizationToken; len(authToken) != 0 {
req.HTTPRequest.Header.Set("Authorization", authToken)
}
return out, req.Send()
}
func validateEndpointHandler(r *request.Request) {
if len(r.ClientInfo.Endpoint) == 0 {
r.Error = aws.ErrMissingEndpoint
}
}
func unmarshalHandler(r *request.Request) {
defer r.HTTPResponse.Body.Close()
out := r.Data.(*getCredentialsOutput)
if err := json.NewDecoder(r.HTTPResponse.Body).Decode(&out); err != nil {
r.Error = awserr.New(request.ErrCodeSerialization,
"failed to decode endpoint credentials",
err,
)
}
}
func unmarshalError(r *request.Request) {
defer r.HTTPResponse.Body.Close()
var errOut errorOutput
err := jsonutil.UnmarshalJSONError(&errOut, r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.NewRequestFailure(
awserr.New(request.ErrCodeSerialization,
"failed to decode error message", err),
r.HTTPResponse.StatusCode,
r.RequestID,
)
return
}
// Response body format is not consistent between metadata endpoints.
// Grab the error message as a string and include that as the source error
r.Error = awserr.New(errOut.Code, errOut.Message, nil)
}

74
vendor/github.com/aws/aws-sdk-go/aws/credentials/env_provider.go generated vendored Normal file
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package credentials
import (
"os"
"github.com/aws/aws-sdk-go/aws/awserr"
)
// EnvProviderName provides a name of Env provider
const EnvProviderName = "EnvProvider"
var (
// ErrAccessKeyIDNotFound is returned when the AWS Access Key ID can't be
// found in the process's environment.
ErrAccessKeyIDNotFound = awserr.New("EnvAccessKeyNotFound", "AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY not found in environment", nil)
// ErrSecretAccessKeyNotFound is returned when the AWS Secret Access Key
// can't be found in the process's environment.
ErrSecretAccessKeyNotFound = awserr.New("EnvSecretNotFound", "AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY not found in environment", nil)
)
// A EnvProvider retrieves credentials from the environment variables of the
// running process. Environment credentials never expire.
//
// Environment variables used:
//
// * Access Key ID: AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY
//
// * Secret Access Key: AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY
type EnvProvider struct {
retrieved bool
}
// NewEnvCredentials returns a pointer to a new Credentials object
// wrapping the environment variable provider.
func NewEnvCredentials() *Credentials {
return NewCredentials(&EnvProvider{})
}
// Retrieve retrieves the keys from the environment.
func (e *EnvProvider) Retrieve() (Value, error) {
e.retrieved = false
id := os.Getenv("AWS_ACCESS_KEY_ID")
if id == "" {
id = os.Getenv("AWS_ACCESS_KEY")
}
secret := os.Getenv("AWS_SECRET_ACCESS_KEY")
if secret == "" {
secret = os.Getenv("AWS_SECRET_KEY")
}
if id == "" {
return Value{ProviderName: EnvProviderName}, ErrAccessKeyIDNotFound
}
if secret == "" {
return Value{ProviderName: EnvProviderName}, ErrSecretAccessKeyNotFound
}
e.retrieved = true
return Value{
AccessKeyID: id,
SecretAccessKey: secret,
SessionToken: os.Getenv("AWS_SESSION_TOKEN"),
ProviderName: EnvProviderName,
}, nil
}
// IsExpired returns if the credentials have been retrieved.
func (e *EnvProvider) IsExpired() bool {
return !e.retrieved
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/example.ini generated vendored Normal file
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[default]
aws_access_key_id = accessKey
aws_secret_access_key = secret
aws_session_token = token
[no_token]
aws_access_key_id = accessKey
aws_secret_access_key = secret
[with_colon]
aws_access_key_id: accessKey
aws_secret_access_key: secret

438
vendor/github.com/aws/aws-sdk-go/aws/credentials/processcreds/provider.go generated vendored Normal file
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/*
Package processcreds is a credential Provider to retrieve `credential_process`
credentials.
WARNING: The following describes a method of sourcing credentials from an external
process. This can potentially be dangerous, so proceed with caution. Other
credential providers should be preferred if at all possible. If using this
option, you should make sure that the config file is as locked down as possible
using security best practices for your operating system.
You can use credentials from a `credential_process` in a variety of ways.
One way is to setup your shared config file, located in the default
location, with the `credential_process` key and the command you want to be
called. You also need to set the AWS_SDK_LOAD_CONFIG environment variable
(e.g., `export AWS_SDK_LOAD_CONFIG=1`) to use the shared config file.
[default]
credential_process = /command/to/call
Creating a new session will use the credential process to retrieve credentials.
NOTE: If there are credentials in the profile you are using, the credential
process will not be used.
// Initialize a session to load credentials.
sess, _ := session.NewSession(&aws.Config{
Region: aws.String("us-east-1")},
)
// Create S3 service client to use the credentials.
svc := s3.New(sess)
Another way to use the `credential_process` method is by using
`credentials.NewCredentials()` and providing a command to be executed to
retrieve credentials:
// Create credentials using the ProcessProvider.
creds := processcreds.NewCredentials("/path/to/command")
// Create service client value configured for credentials.
svc := s3.New(sess, &aws.Config{Credentials: creds})
You can set a non-default timeout for the `credential_process` with another
constructor, `credentials.NewCredentialsTimeout()`, providing the timeout. To
set a one minute timeout:
// Create credentials using the ProcessProvider.
creds := processcreds.NewCredentialsTimeout(
"/path/to/command",
time.Duration(500) * time.Millisecond)
If you need more control, you can set any configurable options in the
credentials using one or more option functions. For example, you can set a two
minute timeout, a credential duration of 60 minutes, and a maximum stdout
buffer size of 2k.
creds := processcreds.NewCredentials(
"/path/to/command",
func(opt *ProcessProvider) {
opt.Timeout = time.Duration(2) * time.Minute
opt.Duration = time.Duration(60) * time.Minute
opt.MaxBufSize = 2048
})
You can also use your own `exec.Cmd`:
// Create an exec.Cmd
myCommand := exec.Command("/path/to/command")
// Create credentials using your exec.Cmd and custom timeout
creds := processcreds.NewCredentialsCommand(
myCommand,
func(opt *processcreds.ProcessProvider) {
opt.Timeout = time.Duration(1) * time.Second
})
*/
package processcreds
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"runtime"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/internal/sdkio"
)
const (
// ProviderName is the name this credentials provider will label any
// returned credentials Value with.
ProviderName = `ProcessProvider`
// ErrCodeProcessProviderParse error parsing process output
ErrCodeProcessProviderParse = "ProcessProviderParseError"
// ErrCodeProcessProviderVersion version error in output
ErrCodeProcessProviderVersion = "ProcessProviderVersionError"
// ErrCodeProcessProviderRequired required attribute missing in output
ErrCodeProcessProviderRequired = "ProcessProviderRequiredError"
// ErrCodeProcessProviderExecution execution of command failed
ErrCodeProcessProviderExecution = "ProcessProviderExecutionError"
// errMsgProcessProviderTimeout process took longer than allowed
errMsgProcessProviderTimeout = "credential process timed out"
// errMsgProcessProviderProcess process error
errMsgProcessProviderProcess = "error in credential_process"
// errMsgProcessProviderParse problem parsing output
errMsgProcessProviderParse = "parse failed of credential_process output"
// errMsgProcessProviderVersion version error in output
errMsgProcessProviderVersion = "wrong version in process output (not 1)"
// errMsgProcessProviderMissKey missing access key id in output
errMsgProcessProviderMissKey = "missing AccessKeyId in process output"
// errMsgProcessProviderMissSecret missing secret acess key in output
errMsgProcessProviderMissSecret = "missing SecretAccessKey in process output"
// errMsgProcessProviderPrepareCmd prepare of command failed
errMsgProcessProviderPrepareCmd = "failed to prepare command"
// errMsgProcessProviderEmptyCmd command must not be empty
errMsgProcessProviderEmptyCmd = "command must not be empty"
// errMsgProcessProviderPipe failed to initialize pipe
errMsgProcessProviderPipe = "failed to initialize pipe"
// DefaultDuration is the default amount of time in minutes that the
// credentials will be valid for.
DefaultDuration = time.Duration(15) * time.Minute
// DefaultBufSize limits buffer size from growing to an enormous
// amount due to a faulty process.
DefaultBufSize = int(8 * sdkio.KibiByte)
// DefaultTimeout default limit on time a process can run.
DefaultTimeout = time.Duration(1) * time.Minute
)
// ProcessProvider satisfies the credentials.Provider interface, and is a
// client to retrieve credentials from a process.
type ProcessProvider struct {
staticCreds bool
credentials.Expiry
originalCommand []string
// Expiry duration of the credentials. Defaults to 15 minutes if not set.
Duration time.Duration
// ExpiryWindow will allow the credentials to trigger refreshing prior to
// the credentials actually expiring. This is beneficial so race conditions
// with expiring credentials do not cause request to fail unexpectedly
// due to ExpiredTokenException exceptions.
//
// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
// 10 seconds before the credentials are actually expired.
//
// If ExpiryWindow is 0 or less it will be ignored.
ExpiryWindow time.Duration
// A string representing an os command that should return a JSON with
// credential information.
command *exec.Cmd
// MaxBufSize limits memory usage from growing to an enormous
// amount due to a faulty process.
MaxBufSize int
// Timeout limits the time a process can run.
Timeout time.Duration
}
// NewCredentials returns a pointer to a new Credentials object wrapping the
// ProcessProvider. The credentials will expire every 15 minutes by default.
func NewCredentials(command string, options ...func(*ProcessProvider)) *credentials.Credentials {
p := &ProcessProvider{
command: exec.Command(command),
Duration: DefaultDuration,
Timeout: DefaultTimeout,
MaxBufSize: DefaultBufSize,
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// NewCredentialsTimeout returns a pointer to a new Credentials object with
// the specified command and timeout, and default duration and max buffer size.
func NewCredentialsTimeout(command string, timeout time.Duration) *credentials.Credentials {
p := NewCredentials(command, func(opt *ProcessProvider) {
opt.Timeout = timeout
})
return p
}
// NewCredentialsCommand returns a pointer to a new Credentials object with
// the specified command, and default timeout, duration and max buffer size.
func NewCredentialsCommand(command *exec.Cmd, options ...func(*ProcessProvider)) *credentials.Credentials {
p := &ProcessProvider{
command: command,
Duration: DefaultDuration,
Timeout: DefaultTimeout,
MaxBufSize: DefaultBufSize,
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// A CredentialProcessResponse is the AWS credentials format that must be
// returned when executing an external credential_process.
type CredentialProcessResponse struct {
// As of this writing, the Version key must be set to 1. This might
// increment over time as the structure evolves.
Version int
// The access key ID that identifies the temporary security credentials.
AccessKeyID string `json:"AccessKeyId"`
// The secret access key that can be used to sign requests.
SecretAccessKey string
// The token that users must pass to the service API to use the temporary credentials.
SessionToken string
// The date on which the current credentials expire.
Expiration *time.Time
}
// Retrieve executes the 'credential_process' and returns the credentials.
func (p *ProcessProvider) Retrieve() (credentials.Value, error) {
out, err := p.executeCredentialProcess()
if err != nil {
return credentials.Value{ProviderName: ProviderName}, err
}
// Serialize and validate response
resp := &CredentialProcessResponse{}
if err = json.Unmarshal(out, resp); err != nil {
return credentials.Value{ProviderName: ProviderName}, awserr.New(
ErrCodeProcessProviderParse,
fmt.Sprintf("%s: %s", errMsgProcessProviderParse, string(out)),
err)
}
if resp.Version != 1 {
return credentials.Value{ProviderName: ProviderName}, awserr.New(
ErrCodeProcessProviderVersion,
errMsgProcessProviderVersion,
nil)
}
if len(resp.AccessKeyID) == 0 {
return credentials.Value{ProviderName: ProviderName}, awserr.New(
ErrCodeProcessProviderRequired,
errMsgProcessProviderMissKey,
nil)
}
if len(resp.SecretAccessKey) == 0 {
return credentials.Value{ProviderName: ProviderName}, awserr.New(
ErrCodeProcessProviderRequired,
errMsgProcessProviderMissSecret,
nil)
}
// Handle expiration
p.staticCreds = resp.Expiration == nil
if resp.Expiration != nil {
p.SetExpiration(*resp.Expiration, p.ExpiryWindow)
}
return credentials.Value{
ProviderName: ProviderName,
AccessKeyID: resp.AccessKeyID,
SecretAccessKey: resp.SecretAccessKey,
SessionToken: resp.SessionToken,
}, nil
}
// IsExpired returns true if the credentials retrieved are expired, or not yet
// retrieved.
func (p *ProcessProvider) IsExpired() bool {
if p.staticCreds {
return false
}
return p.Expiry.IsExpired()
}
// prepareCommand prepares the command to be executed.
func (p *ProcessProvider) prepareCommand() error {
var cmdArgs []string
if runtime.GOOS == "windows" {
cmdArgs = []string{"cmd.exe", "/C"}
} else {
cmdArgs = []string{"sh", "-c"}
}
if len(p.originalCommand) == 0 {
p.originalCommand = make([]string, len(p.command.Args))
copy(p.originalCommand, p.command.Args)
// check for empty command because it succeeds
if len(strings.TrimSpace(p.originalCommand[0])) < 1 {
return awserr.New(
ErrCodeProcessProviderExecution,
fmt.Sprintf(
"%s: %s",
errMsgProcessProviderPrepareCmd,
errMsgProcessProviderEmptyCmd),
nil)
}
}
cmdArgs = append(cmdArgs, p.originalCommand...)
p.command = exec.Command(cmdArgs[0], cmdArgs[1:]...)
p.command.Env = os.Environ()
return nil
}
// executeCredentialProcess starts the credential process on the OS and
// returns the results or an error.
func (p *ProcessProvider) executeCredentialProcess() ([]byte, error) {
if err := p.prepareCommand(); err != nil {
return nil, err
}
// Setup the pipes
outReadPipe, outWritePipe, err := os.Pipe()
if err != nil {
return nil, awserr.New(
ErrCodeProcessProviderExecution,
errMsgProcessProviderPipe,
err)
}
p.command.Stderr = os.Stderr // display stderr on console for MFA
p.command.Stdout = outWritePipe // get creds json on process's stdout
p.command.Stdin = os.Stdin // enable stdin for MFA
output := bytes.NewBuffer(make([]byte, 0, p.MaxBufSize))
stdoutCh := make(chan error, 1)
go readInput(
io.LimitReader(outReadPipe, int64(p.MaxBufSize)),
output,
stdoutCh)
execCh := make(chan error, 1)
go executeCommand(*p.command, execCh)
finished := false
var errors []error
for !finished {
select {
case readError := <-stdoutCh:
errors = appendError(errors, readError)
finished = true
case execError := <-execCh:
err := outWritePipe.Close()
errors = appendError(errors, err)
errors = appendError(errors, execError)
if errors != nil {
return output.Bytes(), awserr.NewBatchError(
ErrCodeProcessProviderExecution,
errMsgProcessProviderProcess,
errors)
}
case <-time.After(p.Timeout):
finished = true
return output.Bytes(), awserr.NewBatchError(
ErrCodeProcessProviderExecution,
errMsgProcessProviderTimeout,
errors) // errors can be nil
}
}
out := output.Bytes()
if runtime.GOOS == "windows" {
// windows adds slashes to quotes
out = []byte(strings.Replace(string(out), `\"`, `"`, -1))
}
return out, nil
}
// appendError conveniently checks for nil before appending slice
func appendError(errors []error, err error) []error {
if err != nil {
return append(errors, err)
}
return errors
}
func executeCommand(cmd exec.Cmd, exec chan error) {
// Start the command
err := cmd.Start()
if err == nil {
err = cmd.Wait()
}
exec <- err
}
func readInput(r io.Reader, w io.Writer, read chan error) {
tee := io.TeeReader(r, w)
_, err := ioutil.ReadAll(tee)
if err == io.EOF {
err = nil
}
read <- err // will only arrive here when write end of pipe is closed
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/shared_credentials_provider.go generated vendored Normal file
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package credentials
import (
"fmt"
"os"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/internal/ini"
"github.com/aws/aws-sdk-go/internal/shareddefaults"
)
// SharedCredsProviderName provides a name of SharedCreds provider
const SharedCredsProviderName = "SharedCredentialsProvider"
var (
// ErrSharedCredentialsHomeNotFound is emitted when the user directory cannot be found.
ErrSharedCredentialsHomeNotFound = awserr.New("UserHomeNotFound", "user home directory not found.", nil)
)
// A SharedCredentialsProvider retrieves access key pair (access key ID,
// secret access key, and session token if present) credentials from the current
// user's home directory, and keeps track if those credentials are expired.
//
// Profile ini file example: $HOME/.aws/credentials
type SharedCredentialsProvider struct {
// Path to the shared credentials file.
//
// If empty will look for "AWS_SHARED_CREDENTIALS_FILE" env variable. If the
// env value is empty will default to current user's home directory.
// Linux/OSX: "$HOME/.aws/credentials"
// Windows: "%USERPROFILE%\.aws\credentials"
Filename string
// AWS Profile to extract credentials from the shared credentials file. If empty
// will default to environment variable "AWS_PROFILE" or "default" if
// environment variable is also not set.
Profile string
// retrieved states if the credentials have been successfully retrieved.
retrieved bool
}
// NewSharedCredentials returns a pointer to a new Credentials object
// wrapping the Profile file provider.
func NewSharedCredentials(filename, profile string) *Credentials {
return NewCredentials(&SharedCredentialsProvider{
Filename: filename,
Profile: profile,
})
}
// Retrieve reads and extracts the shared credentials from the current
// users home directory.
func (p *SharedCredentialsProvider) Retrieve() (Value, error) {
p.retrieved = false
filename, err := p.filename()
if err != nil {
return Value{ProviderName: SharedCredsProviderName}, err
}
creds, err := loadProfile(filename, p.profile())
if err != nil {
return Value{ProviderName: SharedCredsProviderName}, err
}
p.retrieved = true
return creds, nil
}
// IsExpired returns if the shared credentials have expired.
func (p *SharedCredentialsProvider) IsExpired() bool {
return !p.retrieved
}
// loadProfiles loads from the file pointed to by shared credentials filename for profile.
// The credentials retrieved from the profile will be returned or error. Error will be
// returned if it fails to read from the file, or the data is invalid.
func loadProfile(filename, profile string) (Value, error) {
config, err := ini.OpenFile(filename)
if err != nil {
return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsLoad", "failed to load shared credentials file", err)
}
iniProfile, ok := config.GetSection(profile)
if !ok {
return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsLoad", "failed to get profile", nil)
}
id := iniProfile.String("aws_access_key_id")
if len(id) == 0 {
return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsAccessKey",
fmt.Sprintf("shared credentials %s in %s did not contain aws_access_key_id", profile, filename),
nil)
}
secret := iniProfile.String("aws_secret_access_key")
if len(secret) == 0 {
return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsSecret",
fmt.Sprintf("shared credentials %s in %s did not contain aws_secret_access_key", profile, filename),
nil)
}
// Default to empty string if not found
token := iniProfile.String("aws_session_token")
return Value{
AccessKeyID: id,
SecretAccessKey: secret,
SessionToken: token,
ProviderName: SharedCredsProviderName,
}, nil
}
// filename returns the filename to use to read AWS shared credentials.
//
// Will return an error if the user's home directory path cannot be found.
func (p *SharedCredentialsProvider) filename() (string, error) {
if len(p.Filename) != 0 {
return p.Filename, nil
}
if p.Filename = os.Getenv("AWS_SHARED_CREDENTIALS_FILE"); len(p.Filename) != 0 {
return p.Filename, nil
}
if home := shareddefaults.UserHomeDir(); len(home) == 0 {
// Backwards compatibility of home directly not found error being returned.
// This error is too verbose, failure when opening the file would of been
// a better error to return.
return "", ErrSharedCredentialsHomeNotFound
}
p.Filename = shareddefaults.SharedCredentialsFilename()
return p.Filename, nil
}
// profile returns the AWS shared credentials profile. If empty will read
// environment variable "AWS_PROFILE". If that is not set profile will
// return "default".
func (p *SharedCredentialsProvider) profile() string {
if p.Profile == "" {
p.Profile = os.Getenv("AWS_PROFILE")
}
if p.Profile == "" {
p.Profile = "default"
}
return p.Profile
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/doc.go generated vendored Normal file
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// Package ssocreds provides a credential provider for retrieving temporary AWS credentials using an SSO access token.
//
// IMPORTANT: The provider in this package does not initiate or perform the AWS SSO login flow. The SDK provider
// expects that you have already performed the SSO login flow using AWS CLI using the "aws sso login" command, or by
// some other mechanism. The provider must find a valid non-expired access token for the AWS SSO user portal URL in
// ~/.aws/sso/cache. If a cached token is not found, it is expired, or the file is malformed an error will be returned.
//
// Loading AWS SSO credentials with the AWS shared configuration file
//
// You can use configure AWS SSO credentials from the AWS shared configuration file by
// providing the specifying the required keys in the profile:
//
// sso_account_id
// sso_region
// sso_role_name
// sso_start_url
//
// For example, the following defines a profile "devsso" and specifies the AWS SSO parameters that defines the target
// account, role, sign-on portal, and the region where the user portal is located. Note: all SSO arguments must be
// provided, or an error will be returned.
//
// [profile devsso]
// sso_start_url = https://my-sso-portal.awsapps.com/start
// sso_role_name = SSOReadOnlyRole
// sso_region = us-east-1
// sso_account_id = 123456789012
//
// Using the config module, you can load the AWS SDK shared configuration, and specify that this profile be used to
// retrieve credentials. For example:
//
// sess, err := session.NewSessionWithOptions(session.Options{
// SharedConfigState: session.SharedConfigEnable,
// Profile: "devsso",
// })
// if err != nil {
// return err
// }
//
// Programmatically loading AWS SSO credentials directly
//
// You can programmatically construct the AWS SSO Provider in your application, and provide the necessary information
// to load and retrieve temporary credentials using an access token from ~/.aws/sso/cache.
//
// svc := sso.New(sess, &aws.Config{
// Region: aws.String("us-west-2"), // Client Region must correspond to the AWS SSO user portal region
// })
//
// provider := ssocreds.NewCredentialsWithClient(svc, "123456789012", "SSOReadOnlyRole", "https://my-sso-portal.awsapps.com/start")
//
// credentials, err := provider.Get()
// if err != nil {
// return err
// }
//
// Additional Resources
//
// Configuring the AWS CLI to use AWS Single Sign-On: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-sso.html
//
// AWS Single Sign-On User Guide: https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html
package ssocreds

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vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/os.go generated vendored Normal file
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//go:build !windows
// +build !windows
package ssocreds
import "os"
func getHomeDirectory() string {
return os.Getenv("HOME")
}

7
vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/os_windows.go generated vendored Normal file
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package ssocreds
import "os"
func getHomeDirectory() string {
return os.Getenv("USERPROFILE")
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/provider.go generated vendored Normal file
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package ssocreds
import (
"crypto/sha1"
"encoding/hex"
"encoding/json"
"io/ioutil"
"path/filepath"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/auth/bearer"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/service/sso"
"github.com/aws/aws-sdk-go/service/sso/ssoiface"
)
// ErrCodeSSOProviderInvalidToken is the code type that is returned if loaded token has expired or is otherwise invalid.
// To refresh the SSO session run aws sso login with the corresponding profile.
const ErrCodeSSOProviderInvalidToken = "SSOProviderInvalidToken"
const invalidTokenMessage = "the SSO session has expired or is invalid"
func init() {
nowTime = time.Now
defaultCacheLocation = defaultCacheLocationImpl
}
var nowTime func() time.Time
// ProviderName is the name of the provider used to specify the source of credentials.
const ProviderName = "SSOProvider"
var defaultCacheLocation func() string
func defaultCacheLocationImpl() string {
return filepath.Join(getHomeDirectory(), ".aws", "sso", "cache")
}
// Provider is an AWS credential provider that retrieves temporary AWS credentials by exchanging an SSO login token.
type Provider struct {
credentials.Expiry
// The Client which is configured for the AWS Region where the AWS SSO user portal is located.
Client ssoiface.SSOAPI
// The AWS account that is assigned to the user.
AccountID string
// The role name that is assigned to the user.
RoleName string
// The URL that points to the organization's AWS Single Sign-On (AWS SSO) user portal.
StartURL string
// The filepath the cached token will be retrieved from. If unset Provider will
// use the startURL to determine the filepath at.
//
// ~/.aws/sso/cache/<sha1-hex-encoded-startURL>.json
//
// If custom cached token filepath is used, the Provider's startUrl
// parameter will be ignored.
CachedTokenFilepath string
// Used by the SSOCredentialProvider if a token configuration
// profile is used in the shared config
TokenProvider bearer.TokenProvider
}
// NewCredentials returns a new AWS Single Sign-On (AWS SSO) credential provider. The ConfigProvider is expected to be configured
// for the AWS Region where the AWS SSO user portal is located.
func NewCredentials(configProvider client.ConfigProvider, accountID, roleName, startURL string, optFns ...func(provider *Provider)) *credentials.Credentials {
return NewCredentialsWithClient(sso.New(configProvider), accountID, roleName, startURL, optFns...)
}
// NewCredentialsWithClient returns a new AWS Single Sign-On (AWS SSO) credential provider. The provided client is expected to be configured
// for the AWS Region where the AWS SSO user portal is located.
func NewCredentialsWithClient(client ssoiface.SSOAPI, accountID, roleName, startURL string, optFns ...func(provider *Provider)) *credentials.Credentials {
p := &Provider{
Client: client,
AccountID: accountID,
RoleName: roleName,
StartURL: startURL,
}
for _, fn := range optFns {
fn(p)
}
return credentials.NewCredentials(p)
}
// Retrieve retrieves temporary AWS credentials from the configured Amazon Single Sign-On (AWS SSO) user portal
// by exchanging the accessToken present in ~/.aws/sso/cache.
func (p *Provider) Retrieve() (credentials.Value, error) {
return p.RetrieveWithContext(aws.BackgroundContext())
}
// RetrieveWithContext retrieves temporary AWS credentials from the configured Amazon Single Sign-On (AWS SSO) user portal
// by exchanging the accessToken present in ~/.aws/sso/cache.
func (p *Provider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
var accessToken *string
if p.TokenProvider != nil {
token, err := p.TokenProvider.RetrieveBearerToken(ctx)
if err != nil {
return credentials.Value{}, err
}
accessToken = &token.Value
} else {
if p.CachedTokenFilepath == "" {
cachedTokenFilePath, err := getCachedFilePath(p.StartURL)
if err != nil {
return credentials.Value{}, err
}
p.CachedTokenFilepath = cachedTokenFilePath
}
tokenFile, err := loadTokenFile(p.CachedTokenFilepath)
if err != nil {
return credentials.Value{}, err
}
accessToken = &tokenFile.AccessToken
}
output, err := p.Client.GetRoleCredentialsWithContext(ctx, &sso.GetRoleCredentialsInput{
AccessToken: accessToken,
AccountId: &p.AccountID,
RoleName: &p.RoleName,
})
if err != nil {
return credentials.Value{}, err
}
expireTime := time.Unix(0, aws.Int64Value(output.RoleCredentials.Expiration)*int64(time.Millisecond)).UTC()
p.SetExpiration(expireTime, 0)
return credentials.Value{
AccessKeyID: aws.StringValue(output.RoleCredentials.AccessKeyId),
SecretAccessKey: aws.StringValue(output.RoleCredentials.SecretAccessKey),
SessionToken: aws.StringValue(output.RoleCredentials.SessionToken),
ProviderName: ProviderName,
}, nil
}
func getCachedFilePath(startUrl string) (string, error) {
hash := sha1.New()
_, err := hash.Write([]byte(startUrl))
if err != nil {
return "", err
}
return filepath.Join(defaultCacheLocation(), strings.ToLower(hex.EncodeToString(hash.Sum(nil)))+".json"), nil
}
type token struct {
AccessToken string `json:"accessToken"`
ExpiresAt rfc3339 `json:"expiresAt"`
Region string `json:"region,omitempty"`
StartURL string `json:"startUrl,omitempty"`
}
func (t token) Expired() bool {
return nowTime().Round(0).After(time.Time(t.ExpiresAt))
}
func loadTokenFile(cachedTokenPath string) (t token, err error) {
fileBytes, err := ioutil.ReadFile(cachedTokenPath)
if err != nil {
return token{}, awserr.New(ErrCodeSSOProviderInvalidToken, invalidTokenMessage, err)
}
if err := json.Unmarshal(fileBytes, &t); err != nil {
return token{}, awserr.New(ErrCodeSSOProviderInvalidToken, invalidTokenMessage, err)
}
if len(t.AccessToken) == 0 {
return token{}, awserr.New(ErrCodeSSOProviderInvalidToken, invalidTokenMessage, nil)
}
if t.Expired() {
return token{}, awserr.New(ErrCodeSSOProviderInvalidToken, invalidTokenMessage, nil)
}
return t, nil
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/sso_cached_token.go generated vendored Normal file
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package ssocreds
import (
"crypto/sha1"
"encoding/hex"
"encoding/json"
"fmt"
"github.com/aws/aws-sdk-go/internal/shareddefaults"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
)
var resolvedOsUserHomeDir = shareddefaults.UserHomeDir
// StandardCachedTokenFilepath returns the filepath for the cached SSO token file, or
// error if unable get derive the path. Key that will be used to compute a SHA1
// value that is hex encoded.
//
// Derives the filepath using the Key as:
//
// ~/.aws/sso/cache/<sha1-hex-encoded-key>.json
func StandardCachedTokenFilepath(key string) (string, error) {
homeDir := resolvedOsUserHomeDir()
if len(homeDir) == 0 {
return "", fmt.Errorf("unable to get USER's home directory for cached token")
}
hash := sha1.New()
if _, err := hash.Write([]byte(key)); err != nil {
return "", fmt.Errorf("unable to compute cached token filepath key SHA1 hash, %v", err)
}
cacheFilename := strings.ToLower(hex.EncodeToString(hash.Sum(nil))) + ".json"
return filepath.Join(homeDir, ".aws", "sso", "cache", cacheFilename), nil
}
type tokenKnownFields struct {
AccessToken string `json:"accessToken,omitempty"`
ExpiresAt *rfc3339 `json:"expiresAt,omitempty"`
RefreshToken string `json:"refreshToken,omitempty"`
ClientID string `json:"clientId,omitempty"`
ClientSecret string `json:"clientSecret,omitempty"`
}
type cachedToken struct {
tokenKnownFields
UnknownFields map[string]interface{} `json:"-"`
}
// MarshalJSON provides custom marshalling because the standard library Go marshaller ignores unknown/unspecified fields
// when marshalling from a struct: https://pkg.go.dev/encoding/json#Marshal
// This function adds some extra validation to the known fields and captures unknown fields.
func (t cachedToken) MarshalJSON() ([]byte, error) {
fields := map[string]interface{}{}
setTokenFieldString(fields, "accessToken", t.AccessToken)
setTokenFieldRFC3339(fields, "expiresAt", t.ExpiresAt)
setTokenFieldString(fields, "refreshToken", t.RefreshToken)
setTokenFieldString(fields, "clientId", t.ClientID)
setTokenFieldString(fields, "clientSecret", t.ClientSecret)
for k, v := range t.UnknownFields {
if _, ok := fields[k]; ok {
return nil, fmt.Errorf("unknown token field %v, duplicates known field", k)
}
fields[k] = v
}
return json.Marshal(fields)
}
func setTokenFieldString(fields map[string]interface{}, key, value string) {
if value == "" {
return
}
fields[key] = value
}
func setTokenFieldRFC3339(fields map[string]interface{}, key string, value *rfc3339) {
if value == nil {
return
}
fields[key] = value
}
// UnmarshalJSON provides custom unmarshalling because the standard library Go unmarshaller ignores unknown/unspecified
// fields when unmarshalling from a struct: https://pkg.go.dev/encoding/json#Unmarshal
// This function adds some extra validation to the known fields and captures unknown fields.
func (t *cachedToken) UnmarshalJSON(b []byte) error {
var fields map[string]interface{}
if err := json.Unmarshal(b, &fields); err != nil {
return nil
}
t.UnknownFields = map[string]interface{}{}
for k, v := range fields {
var err error
switch k {
case "accessToken":
err = getTokenFieldString(v, &t.AccessToken)
case "expiresAt":
err = getTokenFieldRFC3339(v, &t.ExpiresAt)
case "refreshToken":
err = getTokenFieldString(v, &t.RefreshToken)
case "clientId":
err = getTokenFieldString(v, &t.ClientID)
case "clientSecret":
err = getTokenFieldString(v, &t.ClientSecret)
default:
t.UnknownFields[k] = v
}
if err != nil {
return fmt.Errorf("field %q, %v", k, err)
}
}
return nil
}
func getTokenFieldString(v interface{}, value *string) error {
var ok bool
*value, ok = v.(string)
if !ok {
return fmt.Errorf("expect value to be string, got %T", v)
}
return nil
}
func getTokenFieldRFC3339(v interface{}, value **rfc3339) error {
var stringValue string
if err := getTokenFieldString(v, &stringValue); err != nil {
return err
}
timeValue, err := parseRFC3339(stringValue)
if err != nil {
return err
}
*value = &timeValue
return nil
}
func loadCachedToken(filename string) (cachedToken, error) {
fileBytes, err := ioutil.ReadFile(filename)
if err != nil {
return cachedToken{}, fmt.Errorf("failed to read cached SSO token file, %v", err)
}
var t cachedToken
if err := json.Unmarshal(fileBytes, &t); err != nil {
return cachedToken{}, fmt.Errorf("failed to parse cached SSO token file, %v", err)
}
if len(t.AccessToken) == 0 || t.ExpiresAt == nil || time.Time(*t.ExpiresAt).IsZero() {
return cachedToken{}, fmt.Errorf(
"cached SSO token must contain accessToken and expiresAt fields")
}
return t, nil
}
func storeCachedToken(filename string, t cachedToken, fileMode os.FileMode) (err error) {
tmpFilename := filename + ".tmp-" + strconv.FormatInt(nowTime().UnixNano(), 10)
if err := writeCacheFile(tmpFilename, fileMode, t); err != nil {
return err
}
if err := os.Rename(tmpFilename, filename); err != nil {
return fmt.Errorf("failed to replace old cached SSO token file, %v", err)
}
return nil
}
func writeCacheFile(filename string, fileMode os.FileMode, t cachedToken) (err error) {
var f *os.File
f, err = os.OpenFile(filename, os.O_CREATE|os.O_TRUNC|os.O_RDWR, fileMode)
if err != nil {
return fmt.Errorf("failed to create cached SSO token file %v", err)
}
defer func() {
closeErr := f.Close()
if err == nil && closeErr != nil {
err = fmt.Errorf("failed to close cached SSO token file, %v", closeErr)
}
}()
encoder := json.NewEncoder(f)
if err = encoder.Encode(t); err != nil {
return fmt.Errorf("failed to serialize cached SSO token, %v", err)
}
return nil
}
type rfc3339 time.Time
// UnmarshalJSON decode rfc3339 from JSON format
func (r *rfc3339) UnmarshalJSON(bytes []byte) error {
var value string
var err error
if err = json.Unmarshal(bytes, &value); err != nil {
return err
}
*r, err = parseRFC3339(value)
return err
}
func parseRFC3339(v string) (rfc3339, error) {
parsed, err := time.Parse(time.RFC3339, v)
if err != nil {
return rfc3339{}, fmt.Errorf("expected RFC3339 timestamp: %v", err)
}
return rfc3339(parsed), nil
}
// MarshalJSON encode rfc3339 to JSON format time
func (r *rfc3339) MarshalJSON() ([]byte, error) {
value := time.Time(*r).Format(time.RFC3339)
// Use JSON unmarshal to unescape the quoted value making use of JSON's
// quoting rules.
return json.Marshal(value)
}

148
vendor/github.com/aws/aws-sdk-go/aws/credentials/ssocreds/token_provider.go generated vendored Normal file
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package ssocreds
import (
"fmt"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/auth/bearer"
"github.com/aws/aws-sdk-go/service/ssooidc"
)
// CreateTokenAPIClient provides the interface for the SSOTokenProvider's API
// client for calling CreateToken operation to refresh the SSO token.
type CreateTokenAPIClient interface {
CreateToken(input *ssooidc.CreateTokenInput) (*ssooidc.CreateTokenOutput, error)
}
// SSOTokenProviderOptions provides the options for configuring the
// SSOTokenProvider.
type SSOTokenProviderOptions struct {
// Client that can be overridden
Client CreateTokenAPIClient
// The path the file containing the cached SSO token will be read from.
// Initialized the NewSSOTokenProvider's cachedTokenFilepath parameter.
CachedTokenFilepath string
}
// SSOTokenProvider provides a utility for refreshing SSO AccessTokens for
// Bearer Authentication. The SSOTokenProvider can only be used to refresh
// already cached SSO Tokens. This utility cannot perform the initial SSO
// create token.
//
// The initial SSO create token should be preformed with the AWS CLI before the
// Go application using the SSOTokenProvider will need to retrieve the SSO
// token. If the AWS CLI has not created the token cache file, this provider
// will return an error when attempting to retrieve the cached token.
//
// This provider will attempt to refresh the cached SSO token periodically if
// needed when RetrieveBearerToken is called.
//
// A utility such as the AWS CLI must be used to initially create the SSO
// session and cached token file.
// https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-sso.html
type SSOTokenProvider struct {
options SSOTokenProviderOptions
}
// NewSSOTokenProvider returns an initialized SSOTokenProvider that will
// periodically refresh the SSO token cached stored in the cachedTokenFilepath.
// The cachedTokenFilepath file's content will be rewritten by the token
// provider when the token is refreshed.
//
// The client must be configured for the AWS region the SSO token was created for.
func NewSSOTokenProvider(client CreateTokenAPIClient, cachedTokenFilepath string, optFns ...func(o *SSOTokenProviderOptions)) *SSOTokenProvider {
options := SSOTokenProviderOptions{
Client: client,
CachedTokenFilepath: cachedTokenFilepath,
}
for _, fn := range optFns {
fn(&options)
}
provider := &SSOTokenProvider{
options: options,
}
return provider
}
// RetrieveBearerToken returns the SSO token stored in the cachedTokenFilepath
// the SSOTokenProvider was created with. If the token has expired
// RetrieveBearerToken will attempt to refresh it. If the token cannot be
// refreshed or is not present an error will be returned.
//
// A utility such as the AWS CLI must be used to initially create the SSO
// session and cached token file. https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-sso.html
func (p *SSOTokenProvider) RetrieveBearerToken(ctx aws.Context) (bearer.Token, error) {
cachedToken, err := loadCachedToken(p.options.CachedTokenFilepath)
if err != nil {
return bearer.Token{}, err
}
if cachedToken.ExpiresAt != nil && nowTime().After(time.Time(*cachedToken.ExpiresAt)) {
cachedToken, err = p.refreshToken(cachedToken)
if err != nil {
return bearer.Token{}, fmt.Errorf("refresh cached SSO token failed, %v", err)
}
}
expiresAt := toTime((*time.Time)(cachedToken.ExpiresAt))
return bearer.Token{
Value: cachedToken.AccessToken,
CanExpire: !expiresAt.IsZero(),
Expires: expiresAt,
}, nil
}
func (p *SSOTokenProvider) refreshToken(token cachedToken) (cachedToken, error) {
if token.ClientSecret == "" || token.ClientID == "" || token.RefreshToken == "" {
return cachedToken{}, fmt.Errorf("cached SSO token is expired, or not present, and cannot be refreshed")
}
createResult, err := p.options.Client.CreateToken(&ssooidc.CreateTokenInput{
ClientId: &token.ClientID,
ClientSecret: &token.ClientSecret,
RefreshToken: &token.RefreshToken,
GrantType: aws.String("refresh_token"),
})
if err != nil {
return cachedToken{}, fmt.Errorf("unable to refresh SSO token, %v", err)
}
if createResult.ExpiresIn == nil {
return cachedToken{}, fmt.Errorf("missing required field ExpiresIn")
}
if createResult.AccessToken == nil {
return cachedToken{}, fmt.Errorf("missing required field AccessToken")
}
if createResult.RefreshToken == nil {
return cachedToken{}, fmt.Errorf("missing required field RefreshToken")
}
expiresAt := nowTime().Add(time.Duration(*createResult.ExpiresIn) * time.Second)
token.AccessToken = *createResult.AccessToken
token.ExpiresAt = (*rfc3339)(&expiresAt)
token.RefreshToken = *createResult.RefreshToken
fileInfo, err := os.Stat(p.options.CachedTokenFilepath)
if err != nil {
return cachedToken{}, fmt.Errorf("failed to stat cached SSO token file %v", err)
}
if err = storeCachedToken(p.options.CachedTokenFilepath, token, fileInfo.Mode()); err != nil {
return cachedToken{}, fmt.Errorf("unable to cache refreshed SSO token, %v", err)
}
return token, nil
}
func toTime(p *time.Time) (v time.Time) {
if p == nil {
return v
}
return *p
}

57
vendor/github.com/aws/aws-sdk-go/aws/credentials/static_provider.go generated vendored Normal file
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package credentials
import (
"github.com/aws/aws-sdk-go/aws/awserr"
)
// StaticProviderName provides a name of Static provider
const StaticProviderName = "StaticProvider"
var (
// ErrStaticCredentialsEmpty is emitted when static credentials are empty.
ErrStaticCredentialsEmpty = awserr.New("EmptyStaticCreds", "static credentials are empty", nil)
)
// A StaticProvider is a set of credentials which are set programmatically,
// and will never expire.
type StaticProvider struct {
Value
}
// NewStaticCredentials returns a pointer to a new Credentials object
// wrapping a static credentials value provider. Token is only required
// for temporary security credentials retrieved via STS, otherwise an empty
// string can be passed for this parameter.
func NewStaticCredentials(id, secret, token string) *Credentials {
return NewCredentials(&StaticProvider{Value: Value{
AccessKeyID: id,
SecretAccessKey: secret,
SessionToken: token,
}})
}
// NewStaticCredentialsFromCreds returns a pointer to a new Credentials object
// wrapping the static credentials value provide. Same as NewStaticCredentials
// but takes the creds Value instead of individual fields
func NewStaticCredentialsFromCreds(creds Value) *Credentials {
return NewCredentials(&StaticProvider{Value: creds})
}
// Retrieve returns the credentials or error if the credentials are invalid.
func (s *StaticProvider) Retrieve() (Value, error) {
if s.AccessKeyID == "" || s.SecretAccessKey == "" {
return Value{ProviderName: StaticProviderName}, ErrStaticCredentialsEmpty
}
if len(s.Value.ProviderName) == 0 {
s.Value.ProviderName = StaticProviderName
}
return s.Value, nil
}
// IsExpired returns if the credentials are expired.
//
// For StaticProvider, the credentials never expired.
func (s *StaticProvider) IsExpired() bool {
return false
}

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vendor/github.com/aws/aws-sdk-go/aws/credentials/stscreds/assume_role_provider.go generated vendored Normal file
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/*
Package stscreds are credential Providers to retrieve STS AWS credentials.
STS provides multiple ways to retrieve credentials which can be used when making
future AWS service API operation calls.
The SDK will ensure that per instance of credentials.Credentials all requests
to refresh the credentials will be synchronized. But, the SDK is unable to
ensure synchronous usage of the AssumeRoleProvider if the value is shared
between multiple Credentials, Sessions or service clients.
# Assume Role
To assume an IAM role using STS with the SDK you can create a new Credentials
with the SDKs's stscreds package.
// Initial credentials loaded from SDK's default credential chain. Such as
// the environment, shared credentials (~/.aws/credentials), or EC2 Instance
// Role. These credentials will be used to to make the STS Assume Role API.
sess := session.Must(session.NewSession())
// Create the credentials from AssumeRoleProvider to assume the role
// referenced by the "myRoleARN" ARN.
creds := stscreds.NewCredentials(sess, "myRoleArn")
// Create service client value configured for credentials
// from assumed role.
svc := s3.New(sess, &aws.Config{Credentials: creds})
# Assume Role with static MFA Token
To assume an IAM role with a MFA token you can either specify a MFA token code
directly or provide a function to prompt the user each time the credentials
need to refresh the role's credentials. Specifying the TokenCode should be used
for short lived operations that will not need to be refreshed, and when you do
not want to have direct control over the user provides their MFA token.
With TokenCode the AssumeRoleProvider will be not be able to refresh the role's
credentials.
// Create the credentials from AssumeRoleProvider to assume the role
// referenced by the "myRoleARN" ARN using the MFA token code provided.
creds := stscreds.NewCredentials(sess, "myRoleArn", func(p *stscreds.AssumeRoleProvider) {
p.SerialNumber = aws.String("myTokenSerialNumber")
p.TokenCode = aws.String("00000000")
})
// Create service client value configured for credentials
// from assumed role.
svc := s3.New(sess, &aws.Config{Credentials: creds})
# Assume Role with MFA Token Provider
To assume an IAM role with MFA for longer running tasks where the credentials
may need to be refreshed setting the TokenProvider field of AssumeRoleProvider
will allow the credential provider to prompt for new MFA token code when the
role's credentials need to be refreshed.
The StdinTokenProvider function is available to prompt on stdin to retrieve
the MFA token code from the user. You can also implement custom prompts by
satisfing the TokenProvider function signature.
Using StdinTokenProvider with multiple AssumeRoleProviders, or Credentials will
have undesirable results as the StdinTokenProvider will not be synchronized. A
single Credentials with an AssumeRoleProvider can be shared safely.
// Create the credentials from AssumeRoleProvider to assume the role
// referenced by the "myRoleARN" ARN. Prompting for MFA token from stdin.
creds := stscreds.NewCredentials(sess, "myRoleArn", func(p *stscreds.AssumeRoleProvider) {
p.SerialNumber = aws.String("myTokenSerialNumber")
p.TokenProvider = stscreds.StdinTokenProvider
})
// Create service client value configured for credentials
// from assumed role.
svc := s3.New(sess, &aws.Config{Credentials: creds})
*/
package stscreds
import (
"fmt"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/sdkrand"
"github.com/aws/aws-sdk-go/service/sts"
)
// StdinTokenProvider will prompt on stderr and read from stdin for a string value.
// An error is returned if reading from stdin fails.
//
// Use this function to read MFA tokens from stdin. The function makes no attempt
// to make atomic prompts from stdin across multiple gorouties.
//
// Using StdinTokenProvider with multiple AssumeRoleProviders, or Credentials will
// have undesirable results as the StdinTokenProvider will not be synchronized. A
// single Credentials with an AssumeRoleProvider can be shared safely
//
// Will wait forever until something is provided on the stdin.
func StdinTokenProvider() (string, error) {
var v string
fmt.Fprintf(os.Stderr, "Assume Role MFA token code: ")
_, err := fmt.Scanln(&v)
return v, err
}
// ProviderName provides a name of AssumeRole provider
const ProviderName = "AssumeRoleProvider"
// AssumeRoler represents the minimal subset of the STS client API used by this provider.
type AssumeRoler interface {
AssumeRole(input *sts.AssumeRoleInput) (*sts.AssumeRoleOutput, error)
}
type assumeRolerWithContext interface {
AssumeRoleWithContext(aws.Context, *sts.AssumeRoleInput, ...request.Option) (*sts.AssumeRoleOutput, error)
}
// DefaultDuration is the default amount of time in minutes that the credentials
// will be valid for.
var DefaultDuration = time.Duration(15) * time.Minute
// AssumeRoleProvider retrieves temporary credentials from the STS service, and
// keeps track of their expiration time.
//
// This credential provider will be used by the SDKs default credential change
// when shared configuration is enabled, and the shared config or shared credentials
// file configure assume role. See Session docs for how to do this.
//
// AssumeRoleProvider does not provide any synchronization and it is not safe
// to share this value across multiple Credentials, Sessions, or service clients
// without also sharing the same Credentials instance.
type AssumeRoleProvider struct {
credentials.Expiry
// STS client to make assume role request with.
Client AssumeRoler
// Role to be assumed.
RoleARN string
// Session name, if you wish to reuse the credentials elsewhere.
RoleSessionName string
// Optional, you can pass tag key-value pairs to your session. These tags are called session tags.
Tags []*sts.Tag
// A list of keys for session tags that you want to set as transitive.
// If you set a tag key as transitive, the corresponding key and value passes to subsequent sessions in a role chain.
TransitiveTagKeys []*string
// Expiry duration of the STS credentials. Defaults to 15 minutes if not set.
Duration time.Duration
// Optional ExternalID to pass along, defaults to nil if not set.
ExternalID *string
// The policy plain text must be 2048 bytes or shorter. However, an internal
// conversion compresses it into a packed binary format with a separate limit.
// The PackedPolicySize response element indicates by percentage how close to
// the upper size limit the policy is, with 100% equaling the maximum allowed
// size.
Policy *string
// The ARNs of IAM managed policies you want to use as managed session policies.
// The policies must exist in the same account as the role.
//
// This parameter is optional. You can provide up to 10 managed policy ARNs.
// However, the plain text that you use for both inline and managed session
// policies can't exceed 2,048 characters.
//
// An AWS conversion compresses the passed session policies and session tags
// into a packed binary format that has a separate limit. Your request can fail
// for this limit even if your plain text meets the other requirements. The
// PackedPolicySize response element indicates by percentage how close the policies
// and tags for your request are to the upper size limit.
//
// Passing policies to this operation returns new temporary credentials. The
// resulting session's permissions are the intersection of the role's identity-based
// policy and the session policies. You can use the role's temporary credentials
// in subsequent AWS API calls to access resources in the account that owns
// the role. You cannot use session policies to grant more permissions than
// those allowed by the identity-based policy of the role that is being assumed.
// For more information, see Session Policies (https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session)
// in the IAM User Guide.
PolicyArns []*sts.PolicyDescriptorType
// The identification number of the MFA device that is associated with the user
// who is making the AssumeRole call. Specify this value if the trust policy
// of the role being assumed includes a condition that requires MFA authentication.
// The value is either the serial number for a hardware device (such as GAHT12345678)
// or an Amazon Resource Name (ARN) for a virtual device (such as arn:aws:iam::123456789012:mfa/user).
SerialNumber *string
// The SourceIdentity which is used to identity a persistent identity through the whole session.
// For more details see https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_control-access_monitor.html
SourceIdentity *string
// The value provided by the MFA device, if the trust policy of the role being
// assumed requires MFA (that is, if the policy includes a condition that tests
// for MFA). If the role being assumed requires MFA and if the TokenCode value
// is missing or expired, the AssumeRole call returns an "access denied" error.
//
// If SerialNumber is set and neither TokenCode nor TokenProvider are also
// set an error will be returned.
TokenCode *string
// Async method of providing MFA token code for assuming an IAM role with MFA.
// The value returned by the function will be used as the TokenCode in the Retrieve
// call. See StdinTokenProvider for a provider that prompts and reads from stdin.
//
// This token provider will be called when ever the assumed role's
// credentials need to be refreshed when SerialNumber is also set and
// TokenCode is not set.
//
// If both TokenCode and TokenProvider is set, TokenProvider will be used and
// TokenCode is ignored.
TokenProvider func() (string, error)
// ExpiryWindow will allow the credentials to trigger refreshing prior to
// the credentials actually expiring. This is beneficial so race conditions
// with expiring credentials do not cause request to fail unexpectedly
// due to ExpiredTokenException exceptions.
//
// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
// 10 seconds before the credentials are actually expired.
//
// If ExpiryWindow is 0 or less it will be ignored.
ExpiryWindow time.Duration
// MaxJitterFrac reduces the effective Duration of each credential requested
// by a random percentage between 0 and MaxJitterFraction. MaxJitterFrac must
// have a value between 0 and 1. Any other value may lead to expected behavior.
// With a MaxJitterFrac value of 0, default) will no jitter will be used.
//
// For example, with a Duration of 30m and a MaxJitterFrac of 0.1, the
// AssumeRole call will be made with an arbitrary Duration between 27m and
// 30m.
//
// MaxJitterFrac should not be negative.
MaxJitterFrac float64
}
// NewCredentials returns a pointer to a new Credentials value wrapping the
// AssumeRoleProvider. The credentials will expire every 15 minutes and the
// role will be named after a nanosecond timestamp of this operation. The
// Credentials value will attempt to refresh the credentials using the provider
// when Credentials.Get is called, if the cached credentials are expiring.
//
// Takes a Config provider to create the STS client. The ConfigProvider is
// satisfied by the session.Session type.
//
// It is safe to share the returned Credentials with multiple Sessions and
// service clients. All access to the credentials and refreshing them
// will be synchronized.
func NewCredentials(c client.ConfigProvider, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
p := &AssumeRoleProvider{
Client: sts.New(c),
RoleARN: roleARN,
Duration: DefaultDuration,
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// NewCredentialsWithClient returns a pointer to a new Credentials value wrapping the
// AssumeRoleProvider. The credentials will expire every 15 minutes and the
// role will be named after a nanosecond timestamp of this operation. The
// Credentials value will attempt to refresh the credentials using the provider
// when Credentials.Get is called, if the cached credentials are expiring.
//
// Takes an AssumeRoler which can be satisfied by the STS client.
//
// It is safe to share the returned Credentials with multiple Sessions and
// service clients. All access to the credentials and refreshing them
// will be synchronized.
func NewCredentialsWithClient(svc AssumeRoler, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
p := &AssumeRoleProvider{
Client: svc,
RoleARN: roleARN,
Duration: DefaultDuration,
}
for _, option := range options {
option(p)
}
return credentials.NewCredentials(p)
}
// Retrieve generates a new set of temporary credentials using STS.
func (p *AssumeRoleProvider) Retrieve() (credentials.Value, error) {
return p.RetrieveWithContext(aws.BackgroundContext())
}
// RetrieveWithContext generates a new set of temporary credentials using STS.
func (p *AssumeRoleProvider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
// Apply defaults where parameters are not set.
if p.RoleSessionName == "" {
// Try to work out a role name that will hopefully end up unique.
p.RoleSessionName = fmt.Sprintf("%d", time.Now().UTC().UnixNano())
}
if p.Duration == 0 {
// Expire as often as AWS permits.
p.Duration = DefaultDuration
}
jitter := time.Duration(sdkrand.SeededRand.Float64() * p.MaxJitterFrac * float64(p.Duration))
input := &sts.AssumeRoleInput{
DurationSeconds: aws.Int64(int64((p.Duration - jitter) / time.Second)),
RoleArn: aws.String(p.RoleARN),
RoleSessionName: aws.String(p.RoleSessionName),
ExternalId: p.ExternalID,
Tags: p.Tags,
PolicyArns: p.PolicyArns,
TransitiveTagKeys: p.TransitiveTagKeys,
SourceIdentity: p.SourceIdentity,
}
if p.Policy != nil {
input.Policy = p.Policy
}
if p.SerialNumber != nil {
if p.TokenCode != nil {
input.SerialNumber = p.SerialNumber
input.TokenCode = p.TokenCode
} else if p.TokenProvider != nil {
input.SerialNumber = p.SerialNumber
code, err := p.TokenProvider()
if err != nil {
return credentials.Value{ProviderName: ProviderName}, err
}
input.TokenCode = aws.String(code)
} else {
return credentials.Value{ProviderName: ProviderName},
awserr.New("AssumeRoleTokenNotAvailable",
"assume role with MFA enabled, but neither TokenCode nor TokenProvider are set", nil)
}
}
var roleOutput *sts.AssumeRoleOutput
var err error
if c, ok := p.Client.(assumeRolerWithContext); ok {
roleOutput, err = c.AssumeRoleWithContext(ctx, input)
} else {
roleOutput, err = p.Client.AssumeRole(input)
}
if err != nil {
return credentials.Value{ProviderName: ProviderName}, err
}
// We will proactively generate new credentials before they expire.
p.SetExpiration(*roleOutput.Credentials.Expiration, p.ExpiryWindow)
return credentials.Value{
AccessKeyID: *roleOutput.Credentials.AccessKeyId,
SecretAccessKey: *roleOutput.Credentials.SecretAccessKey,
SessionToken: *roleOutput.Credentials.SessionToken,
ProviderName: ProviderName,
}, nil
}

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package stscreds
import (
"fmt"
"io/ioutil"
"strconv"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/service/sts"
"github.com/aws/aws-sdk-go/service/sts/stsiface"
)
const (
// ErrCodeWebIdentity will be used as an error code when constructing
// a new error to be returned during session creation or retrieval.
ErrCodeWebIdentity = "WebIdentityErr"
// WebIdentityProviderName is the web identity provider name
WebIdentityProviderName = "WebIdentityCredentials"
)
// now is used to return a time.Time object representing
// the current time. This can be used to easily test and
// compare test values.
var now = time.Now
// TokenFetcher should return WebIdentity token bytes or an error
type TokenFetcher interface {
FetchToken(credentials.Context) ([]byte, error)
}
// FetchTokenPath is a path to a WebIdentity token file
type FetchTokenPath string
// FetchToken returns a token by reading from the filesystem
func (f FetchTokenPath) FetchToken(ctx credentials.Context) ([]byte, error) {
data, err := ioutil.ReadFile(string(f))
if err != nil {
errMsg := fmt.Sprintf("unable to read file at %s", f)
return nil, awserr.New(ErrCodeWebIdentity, errMsg, err)
}
return data, nil
}
// WebIdentityRoleProvider is used to retrieve credentials using
// an OIDC token.
type WebIdentityRoleProvider struct {
credentials.Expiry
// The policy ARNs to use with the web identity assumed role.
PolicyArns []*sts.PolicyDescriptorType
// Duration the STS credentials will be valid for. Truncated to seconds.
// If unset, the assumed role will use AssumeRoleWithWebIdentity's default
// expiry duration. See
// https://docs.aws.amazon.com/sdk-for-go/api/service/sts/#STS.AssumeRoleWithWebIdentity
// for more information.
Duration time.Duration
// The amount of time the credentials will be refreshed before they expire.
// This is useful refresh credentials before they expire to reduce risk of
// using credentials as they expire. If unset, will default to no expiry
// window.
ExpiryWindow time.Duration
client stsiface.STSAPI
tokenFetcher TokenFetcher
roleARN string
roleSessionName string
}
// NewWebIdentityCredentials will return a new set of credentials with a given
// configuration, role arn, and token file path.
//
// Deprecated: Use NewWebIdentityRoleProviderWithOptions for flexible
// functional options, and wrap with credentials.NewCredentials helper.
func NewWebIdentityCredentials(c client.ConfigProvider, roleARN, roleSessionName, path string) *credentials.Credentials {
svc := sts.New(c)
p := NewWebIdentityRoleProvider(svc, roleARN, roleSessionName, path)
return credentials.NewCredentials(p)
}
// NewWebIdentityRoleProvider will return a new WebIdentityRoleProvider with the
// provided stsiface.STSAPI
//
// Deprecated: Use NewWebIdentityRoleProviderWithOptions for flexible
// functional options.
func NewWebIdentityRoleProvider(svc stsiface.STSAPI, roleARN, roleSessionName, path string) *WebIdentityRoleProvider {
return NewWebIdentityRoleProviderWithOptions(svc, roleARN, roleSessionName, FetchTokenPath(path))
}
// NewWebIdentityRoleProviderWithToken will return a new WebIdentityRoleProvider with the
// provided stsiface.STSAPI and a TokenFetcher
//
// Deprecated: Use NewWebIdentityRoleProviderWithOptions for flexible
// functional options.
func NewWebIdentityRoleProviderWithToken(svc stsiface.STSAPI, roleARN, roleSessionName string, tokenFetcher TokenFetcher) *WebIdentityRoleProvider {
return NewWebIdentityRoleProviderWithOptions(svc, roleARN, roleSessionName, tokenFetcher)
}
// NewWebIdentityRoleProviderWithOptions will return an initialize
// WebIdentityRoleProvider with the provided stsiface.STSAPI, role ARN, and a
// TokenFetcher. Additional options can be provided as functional options.
//
// TokenFetcher is the implementation that will retrieve the JWT token from to
// assume the role with. Use the provided FetchTokenPath implementation to
// retrieve the JWT token using a file system path.
func NewWebIdentityRoleProviderWithOptions(svc stsiface.STSAPI, roleARN, roleSessionName string, tokenFetcher TokenFetcher, optFns ...func(*WebIdentityRoleProvider)) *WebIdentityRoleProvider {
p := WebIdentityRoleProvider{
client: svc,
tokenFetcher: tokenFetcher,
roleARN: roleARN,
roleSessionName: roleSessionName,
}
for _, fn := range optFns {
fn(&p)
}
return &p
}
// Retrieve will attempt to assume a role from a token which is located at
// 'WebIdentityTokenFilePath' specified destination and if that is empty an
// error will be returned.
func (p *WebIdentityRoleProvider) Retrieve() (credentials.Value, error) {
return p.RetrieveWithContext(aws.BackgroundContext())
}
// RetrieveWithContext will attempt to assume a role from a token which is
// located at 'WebIdentityTokenFilePath' specified destination and if that is
// empty an error will be returned.
func (p *WebIdentityRoleProvider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
b, err := p.tokenFetcher.FetchToken(ctx)
if err != nil {
return credentials.Value{}, awserr.New(ErrCodeWebIdentity, "failed fetching WebIdentity token: ", err)
}
sessionName := p.roleSessionName
if len(sessionName) == 0 {
// session name is used to uniquely identify a session. This simply
// uses unix time in nanoseconds to uniquely identify sessions.
sessionName = strconv.FormatInt(now().UnixNano(), 10)
}
var duration *int64
if p.Duration != 0 {
duration = aws.Int64(int64(p.Duration / time.Second))
}
req, resp := p.client.AssumeRoleWithWebIdentityRequest(&sts.AssumeRoleWithWebIdentityInput{
PolicyArns: p.PolicyArns,
RoleArn: &p.roleARN,
RoleSessionName: &sessionName,
WebIdentityToken: aws.String(string(b)),
DurationSeconds: duration,
})
req.SetContext(ctx)
// InvalidIdentityToken error is a temporary error that can occur
// when assuming an Role with a JWT web identity token.
req.RetryErrorCodes = append(req.RetryErrorCodes, sts.ErrCodeInvalidIdentityTokenException)
if err := req.Send(); err != nil {
return credentials.Value{}, awserr.New(ErrCodeWebIdentity, "failed to retrieve credentials", err)
}
p.SetExpiration(aws.TimeValue(resp.Credentials.Expiration), p.ExpiryWindow)
value := credentials.Value{
AccessKeyID: aws.StringValue(resp.Credentials.AccessKeyId),
SecretAccessKey: aws.StringValue(resp.Credentials.SecretAccessKey),
SessionToken: aws.StringValue(resp.Credentials.SessionToken),
ProviderName: WebIdentityProviderName,
}
return value, nil
}

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// Package csm provides the Client Side Monitoring (CSM) client which enables
// sending metrics via UDP connection to the CSM agent. This package provides
// control options, and configuration for the CSM client. The client can be
// controlled manually, or automatically via the SDK's Session configuration.
//
// Enabling CSM client via SDK's Session configuration
//
// The CSM client can be enabled automatically via SDK's Session configuration.
// The SDK's session configuration enables the CSM client if the AWS_CSM_PORT
// environment variable is set to a non-empty value.
//
// The configuration options for the CSM client via the SDK's session
// configuration are:
//
// * AWS_CSM_PORT=<port number>
// The port number the CSM agent will receive metrics on.
//
// * AWS_CSM_HOST=<hostname or ip>
// The hostname, or IP address the CSM agent will receive metrics on.
// Without port number.
//
// Manually enabling the CSM client
//
// The CSM client can be started, paused, and resumed manually. The Start
// function will enable the CSM client to publish metrics to the CSM agent. It
// is safe to call Start concurrently, but if Start is called additional times
// with different ClientID or address it will panic.
//
// r, err := csm.Start("clientID", ":31000")
// if err != nil {
// panic(fmt.Errorf("failed starting CSM: %v", err))
// }
//
// When controlling the CSM client manually, you must also inject its request
// handlers into the SDK's Session configuration for the SDK's API clients to
// publish metrics.
//
// sess, err := session.NewSession(&aws.Config{})
// if err != nil {
// panic(fmt.Errorf("failed loading session: %v", err))
// }
//
// // Add CSM client's metric publishing request handlers to the SDK's
// // Session Configuration.
// r.InjectHandlers(&sess.Handlers)
//
// Controlling CSM client
//
// Once the CSM client has been enabled the Get function will return a Reporter
// value that you can use to pause and resume the metrics published to the CSM
// agent. If Get function is called before the reporter is enabled with the
// Start function or via SDK's Session configuration nil will be returned.
//
// The Pause method can be called to stop the CSM client publishing metrics to
// the CSM agent. The Continue method will resume metric publishing.
//
// // Get the CSM client Reporter.
// r := csm.Get()
//
// // Will pause monitoring
// r.Pause()
// resp, err = client.GetObject(&s3.GetObjectInput{
// Bucket: aws.String("bucket"),
// Key: aws.String("key"),
// })
//
// // Resume monitoring
// r.Continue()
package csm

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vendor/github.com/aws/aws-sdk-go/aws/csm/enable.go generated vendored Normal file
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package csm
import (
"fmt"
"strings"
"sync"
)
var (
lock sync.Mutex
)
const (
// DefaultPort is used when no port is specified.
DefaultPort = "31000"
// DefaultHost is the host that will be used when none is specified.
DefaultHost = "127.0.0.1"
)
// AddressWithDefaults returns a CSM address built from the host and port
// values. If the host or port is not set, default values will be used
// instead. If host is "localhost" it will be replaced with "127.0.0.1".
func AddressWithDefaults(host, port string) string {
if len(host) == 0 || strings.EqualFold(host, "localhost") {
host = DefaultHost
}
if len(port) == 0 {
port = DefaultPort
}
// Only IP6 host can contain a colon
if strings.Contains(host, ":") {
return "[" + host + "]:" + port
}
return host + ":" + port
}
// Start will start a long running go routine to capture
// client side metrics. Calling start multiple time will only
// start the metric listener once and will panic if a different
// client ID or port is passed in.
//
// r, err := csm.Start("clientID", "127.0.0.1:31000")
// if err != nil {
// panic(fmt.Errorf("expected no error, but received %v", err))
// }
// sess := session.NewSession()
// r.InjectHandlers(sess.Handlers)
//
// svc := s3.New(sess)
// out, err := svc.GetObject(&s3.GetObjectInput{
// Bucket: aws.String("bucket"),
// Key: aws.String("key"),
// })
func Start(clientID string, url string) (*Reporter, error) {
lock.Lock()
defer lock.Unlock()
if sender == nil {
sender = newReporter(clientID, url)
} else {
if sender.clientID != clientID {
panic(fmt.Errorf("inconsistent client IDs. %q was expected, but received %q", sender.clientID, clientID))
}
if sender.url != url {
panic(fmt.Errorf("inconsistent URLs. %q was expected, but received %q", sender.url, url))
}
}
if err := connect(url); err != nil {
sender = nil
return nil, err
}
return sender, nil
}
// Get will return a reporter if one exists, if one does not exist, nil will
// be returned.
func Get() *Reporter {
lock.Lock()
defer lock.Unlock()
return sender
}

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vendor/github.com/aws/aws-sdk-go/aws/csm/metric.go generated vendored Normal file
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package csm
import (
"strconv"
"time"
"github.com/aws/aws-sdk-go/aws"
)
type metricTime time.Time
func (t metricTime) MarshalJSON() ([]byte, error) {
ns := time.Duration(time.Time(t).UnixNano())
return []byte(strconv.FormatInt(int64(ns/time.Millisecond), 10)), nil
}
type metric struct {
ClientID *string `json:"ClientId,omitempty"`
API *string `json:"Api,omitempty"`
Service *string `json:"Service,omitempty"`
Timestamp *metricTime `json:"Timestamp,omitempty"`
Type *string `json:"Type,omitempty"`
Version *int `json:"Version,omitempty"`
AttemptCount *int `json:"AttemptCount,omitempty"`
Latency *int `json:"Latency,omitempty"`
Fqdn *string `json:"Fqdn,omitempty"`
UserAgent *string `json:"UserAgent,omitempty"`
AttemptLatency *int `json:"AttemptLatency,omitempty"`
SessionToken *string `json:"SessionToken,omitempty"`
Region *string `json:"Region,omitempty"`
AccessKey *string `json:"AccessKey,omitempty"`
HTTPStatusCode *int `json:"HttpStatusCode,omitempty"`
XAmzID2 *string `json:"XAmzId2,omitempty"`
XAmzRequestID *string `json:"XAmznRequestId,omitempty"`
AWSException *string `json:"AwsException,omitempty"`
AWSExceptionMessage *string `json:"AwsExceptionMessage,omitempty"`
SDKException *string `json:"SdkException,omitempty"`
SDKExceptionMessage *string `json:"SdkExceptionMessage,omitempty"`
FinalHTTPStatusCode *int `json:"FinalHttpStatusCode,omitempty"`
FinalAWSException *string `json:"FinalAwsException,omitempty"`
FinalAWSExceptionMessage *string `json:"FinalAwsExceptionMessage,omitempty"`
FinalSDKException *string `json:"FinalSdkException,omitempty"`
FinalSDKExceptionMessage *string `json:"FinalSdkExceptionMessage,omitempty"`
DestinationIP *string `json:"DestinationIp,omitempty"`
ConnectionReused *int `json:"ConnectionReused,omitempty"`
AcquireConnectionLatency *int `json:"AcquireConnectionLatency,omitempty"`
ConnectLatency *int `json:"ConnectLatency,omitempty"`
RequestLatency *int `json:"RequestLatency,omitempty"`
DNSLatency *int `json:"DnsLatency,omitempty"`
TCPLatency *int `json:"TcpLatency,omitempty"`
SSLLatency *int `json:"SslLatency,omitempty"`
MaxRetriesExceeded *int `json:"MaxRetriesExceeded,omitempty"`
}
func (m *metric) TruncateFields() {
m.ClientID = truncateString(m.ClientID, 255)
m.UserAgent = truncateString(m.UserAgent, 256)
m.AWSException = truncateString(m.AWSException, 128)
m.AWSExceptionMessage = truncateString(m.AWSExceptionMessage, 512)
m.SDKException = truncateString(m.SDKException, 128)
m.SDKExceptionMessage = truncateString(m.SDKExceptionMessage, 512)
m.FinalAWSException = truncateString(m.FinalAWSException, 128)
m.FinalAWSExceptionMessage = truncateString(m.FinalAWSExceptionMessage, 512)
m.FinalSDKException = truncateString(m.FinalSDKException, 128)
m.FinalSDKExceptionMessage = truncateString(m.FinalSDKExceptionMessage, 512)
}
func truncateString(v *string, l int) *string {
if v != nil && len(*v) > l {
nv := (*v)[:l]
return &nv
}
return v
}
func (m *metric) SetException(e metricException) {
switch te := e.(type) {
case awsException:
m.AWSException = aws.String(te.exception)
m.AWSExceptionMessage = aws.String(te.message)
case sdkException:
m.SDKException = aws.String(te.exception)
m.SDKExceptionMessage = aws.String(te.message)
}
}
func (m *metric) SetFinalException(e metricException) {
switch te := e.(type) {
case awsException:
m.FinalAWSException = aws.String(te.exception)
m.FinalAWSExceptionMessage = aws.String(te.message)
case sdkException:
m.FinalSDKException = aws.String(te.exception)
m.FinalSDKExceptionMessage = aws.String(te.message)
}
}

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vendor/github.com/aws/aws-sdk-go/aws/csm/metric_chan.go generated vendored Normal file
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package csm
import (
"sync/atomic"
)
const (
runningEnum = iota
pausedEnum
)
var (
// MetricsChannelSize of metrics to hold in the channel
MetricsChannelSize = 100
)
type metricChan struct {
ch chan metric
paused *int64
}
func newMetricChan(size int) metricChan {
return metricChan{
ch: make(chan metric, size),
paused: new(int64),
}
}
func (ch *metricChan) Pause() {
atomic.StoreInt64(ch.paused, pausedEnum)
}
func (ch *metricChan) Continue() {
atomic.StoreInt64(ch.paused, runningEnum)
}
func (ch *metricChan) IsPaused() bool {
v := atomic.LoadInt64(ch.paused)
return v == pausedEnum
}
// Push will push metrics to the metric channel if the channel
// is not paused
func (ch *metricChan) Push(m metric) bool {
if ch.IsPaused() {
return false
}
select {
case ch.ch <- m:
return true
default:
return false
}
}

26
vendor/github.com/aws/aws-sdk-go/aws/csm/metric_exception.go generated vendored Normal file
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package csm
type metricException interface {
Exception() string
Message() string
}
type requestException struct {
exception string
message string
}
func (e requestException) Exception() string {
return e.exception
}
func (e requestException) Message() string {
return e.message
}
type awsException struct {
requestException
}
type sdkException struct {
requestException
}

264
vendor/github.com/aws/aws-sdk-go/aws/csm/reporter.go generated vendored Normal file
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package csm
import (
"encoding/json"
"net"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/request"
)
// Reporter will gather metrics of API requests made and
// send those metrics to the CSM endpoint.
type Reporter struct {
clientID string
url string
conn net.Conn
metricsCh metricChan
done chan struct{}
}
var (
sender *Reporter
)
func connect(url string) error {
const network = "udp"
if err := sender.connect(network, url); err != nil {
return err
}
if sender.done == nil {
sender.done = make(chan struct{})
go sender.start()
}
return nil
}
func newReporter(clientID, url string) *Reporter {
return &Reporter{
clientID: clientID,
url: url,
metricsCh: newMetricChan(MetricsChannelSize),
}
}
func (rep *Reporter) sendAPICallAttemptMetric(r *request.Request) {
if rep == nil {
return
}
now := time.Now()
creds, _ := r.Config.Credentials.Get()
m := metric{
ClientID: aws.String(rep.clientID),
API: aws.String(r.Operation.Name),
Service: aws.String(r.ClientInfo.ServiceID),
Timestamp: (*metricTime)(&now),
UserAgent: aws.String(r.HTTPRequest.Header.Get("User-Agent")),
Region: r.Config.Region,
Type: aws.String("ApiCallAttempt"),
Version: aws.Int(1),
XAmzRequestID: aws.String(r.RequestID),
AttemptLatency: aws.Int(int(now.Sub(r.AttemptTime).Nanoseconds() / int64(time.Millisecond))),
AccessKey: aws.String(creds.AccessKeyID),
}
if r.HTTPResponse != nil {
m.HTTPStatusCode = aws.Int(r.HTTPResponse.StatusCode)
}
if r.Error != nil {
if awserr, ok := r.Error.(awserr.Error); ok {
m.SetException(getMetricException(awserr))
}
}
m.TruncateFields()
rep.metricsCh.Push(m)
}
func getMetricException(err awserr.Error) metricException {
msg := err.Error()
code := err.Code()
switch code {
case request.ErrCodeRequestError,
request.ErrCodeSerialization,
request.CanceledErrorCode:
return sdkException{
requestException{exception: code, message: msg},
}
default:
return awsException{
requestException{exception: code, message: msg},
}
}
}
func (rep *Reporter) sendAPICallMetric(r *request.Request) {
if rep == nil {
return
}
now := time.Now()
m := metric{
ClientID: aws.String(rep.clientID),
API: aws.String(r.Operation.Name),
Service: aws.String(r.ClientInfo.ServiceID),
Timestamp: (*metricTime)(&now),
UserAgent: aws.String(r.HTTPRequest.Header.Get("User-Agent")),
Type: aws.String("ApiCall"),
AttemptCount: aws.Int(r.RetryCount + 1),
Region: r.Config.Region,
Latency: aws.Int(int(time.Since(r.Time) / time.Millisecond)),
XAmzRequestID: aws.String(r.RequestID),
MaxRetriesExceeded: aws.Int(boolIntValue(r.RetryCount >= r.MaxRetries())),
}
if r.HTTPResponse != nil {
m.FinalHTTPStatusCode = aws.Int(r.HTTPResponse.StatusCode)
}
if r.Error != nil {
if awserr, ok := r.Error.(awserr.Error); ok {
m.SetFinalException(getMetricException(awserr))
}
}
m.TruncateFields()
// TODO: Probably want to figure something out for logging dropped
// metrics
rep.metricsCh.Push(m)
}
func (rep *Reporter) connect(network, url string) error {
if rep.conn != nil {
rep.conn.Close()
}
conn, err := net.Dial(network, url)
if err != nil {
return awserr.New("UDPError", "Could not connect", err)
}
rep.conn = conn
return nil
}
func (rep *Reporter) close() {
if rep.done != nil {
close(rep.done)
}
rep.metricsCh.Pause()
}
func (rep *Reporter) start() {
defer func() {
rep.metricsCh.Pause()
}()
for {
select {
case <-rep.done:
rep.done = nil
return
case m := <-rep.metricsCh.ch:
// TODO: What to do with this error? Probably should just log
b, err := json.Marshal(m)
if err != nil {
continue
}
rep.conn.Write(b)
}
}
}
// Pause will pause the metric channel preventing any new metrics from being
// added. It is safe to call concurrently with other calls to Pause, but if
// called concurently with Continue can lead to unexpected state.
func (rep *Reporter) Pause() {
lock.Lock()
defer lock.Unlock()
if rep == nil {
return
}
rep.close()
}
// Continue will reopen the metric channel and allow for monitoring to be
// resumed. It is safe to call concurrently with other calls to Continue, but
// if called concurently with Pause can lead to unexpected state.
func (rep *Reporter) Continue() {
lock.Lock()
defer lock.Unlock()
if rep == nil {
return
}
if !rep.metricsCh.IsPaused() {
return
}
rep.metricsCh.Continue()
}
// Client side metric handler names
const (
APICallMetricHandlerName = "awscsm.SendAPICallMetric"
APICallAttemptMetricHandlerName = "awscsm.SendAPICallAttemptMetric"
)
// InjectHandlers will will enable client side metrics and inject the proper
// handlers to handle how metrics are sent.
//
// InjectHandlers is NOT safe to call concurrently. Calling InjectHandlers
// multiple times may lead to unexpected behavior, (e.g. duplicate metrics).
//
// // Start must be called in order to inject the correct handlers
// r, err := csm.Start("clientID", "127.0.0.1:8094")
// if err != nil {
// panic(fmt.Errorf("expected no error, but received %v", err))
// }
//
// sess := session.NewSession()
// r.InjectHandlers(&sess.Handlers)
//
// // create a new service client with our client side metric session
// svc := s3.New(sess)
func (rep *Reporter) InjectHandlers(handlers *request.Handlers) {
if rep == nil {
return
}
handlers.Complete.PushFrontNamed(request.NamedHandler{
Name: APICallMetricHandlerName,
Fn: rep.sendAPICallMetric,
})
handlers.CompleteAttempt.PushFrontNamed(request.NamedHandler{
Name: APICallAttemptMetricHandlerName,
Fn: rep.sendAPICallAttemptMetric,
})
}
// boolIntValue return 1 for true and 0 for false.
func boolIntValue(b bool) int {
if b {
return 1
}
return 0
}

208
vendor/github.com/aws/aws-sdk-go/aws/defaults/defaults.go generated vendored Normal file
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// Package defaults is a collection of helpers to retrieve the SDK's default
// configuration and handlers.
//
// Generally this package shouldn't be used directly, but session.Session
// instead. This package is useful when you need to reset the defaults
// of a session or service client to the SDK defaults before setting
// additional parameters.
package defaults
import (
"fmt"
"net"
"net/http"
"net/url"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/corehandlers"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds"
"github.com/aws/aws-sdk-go/aws/credentials/endpointcreds"
"github.com/aws/aws-sdk-go/aws/ec2metadata"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/shareddefaults"
)
// A Defaults provides a collection of default values for SDK clients.
type Defaults struct {
Config *aws.Config
Handlers request.Handlers
}
// Get returns the SDK's default values with Config and handlers pre-configured.
func Get() Defaults {
cfg := Config()
handlers := Handlers()
cfg.Credentials = CredChain(cfg, handlers)
return Defaults{
Config: cfg,
Handlers: handlers,
}
}
// Config returns the default configuration without credentials.
// To retrieve a config with credentials also included use
// `defaults.Get().Config` instead.
//
// Generally you shouldn't need to use this method directly, but
// is available if you need to reset the configuration of an
// existing service client or session.
func Config() *aws.Config {
return aws.NewConfig().
WithCredentials(credentials.AnonymousCredentials).
WithRegion(os.Getenv("AWS_REGION")).
WithHTTPClient(http.DefaultClient).
WithMaxRetries(aws.UseServiceDefaultRetries).
WithLogger(aws.NewDefaultLogger()).
WithLogLevel(aws.LogOff).
WithEndpointResolver(endpoints.DefaultResolver())
}
// Handlers returns the default request handlers.
//
// Generally you shouldn't need to use this method directly, but
// is available if you need to reset the request handlers of an
// existing service client or session.
func Handlers() request.Handlers {
var handlers request.Handlers
handlers.Validate.PushBackNamed(corehandlers.ValidateEndpointHandler)
handlers.Validate.AfterEachFn = request.HandlerListStopOnError
handlers.Build.PushBackNamed(corehandlers.SDKVersionUserAgentHandler)
handlers.Build.PushBackNamed(corehandlers.AddAwsInternal)
handlers.Build.PushBackNamed(corehandlers.AddHostExecEnvUserAgentHander)
handlers.Build.AfterEachFn = request.HandlerListStopOnError
handlers.Sign.PushBackNamed(corehandlers.BuildContentLengthHandler)
handlers.Send.PushBackNamed(corehandlers.ValidateReqSigHandler)
handlers.Send.PushBackNamed(corehandlers.SendHandler)
handlers.AfterRetry.PushBackNamed(corehandlers.AfterRetryHandler)
handlers.ValidateResponse.PushBackNamed(corehandlers.ValidateResponseHandler)
return handlers
}
// CredChain returns the default credential chain.
//
// Generally you shouldn't need to use this method directly, but
// is available if you need to reset the credentials of an
// existing service client or session's Config.
func CredChain(cfg *aws.Config, handlers request.Handlers) *credentials.Credentials {
return credentials.NewCredentials(&credentials.ChainProvider{
VerboseErrors: aws.BoolValue(cfg.CredentialsChainVerboseErrors),
Providers: CredProviders(cfg, handlers),
})
}
// CredProviders returns the slice of providers used in
// the default credential chain.
//
// For applications that need to use some other provider (for example use
// different environment variables for legacy reasons) but still fall back
// on the default chain of providers. This allows that default chaint to be
// automatically updated
func CredProviders(cfg *aws.Config, handlers request.Handlers) []credentials.Provider {
return []credentials.Provider{
&credentials.EnvProvider{},
&credentials.SharedCredentialsProvider{Filename: "", Profile: ""},
RemoteCredProvider(*cfg, handlers),
}
}
const (
httpProviderAuthorizationEnvVar = "AWS_CONTAINER_AUTHORIZATION_TOKEN"
httpProviderEnvVar = "AWS_CONTAINER_CREDENTIALS_FULL_URI"
)
// RemoteCredProvider returns a credentials provider for the default remote
// endpoints such as EC2 or ECS Roles.
func RemoteCredProvider(cfg aws.Config, handlers request.Handlers) credentials.Provider {
if u := os.Getenv(httpProviderEnvVar); len(u) > 0 {
return localHTTPCredProvider(cfg, handlers, u)
}
if uri := os.Getenv(shareddefaults.ECSCredsProviderEnvVar); len(uri) > 0 {
u := fmt.Sprintf("%s%s", shareddefaults.ECSContainerCredentialsURI, uri)
return httpCredProvider(cfg, handlers, u)
}
return ec2RoleProvider(cfg, handlers)
}
var lookupHostFn = net.LookupHost
func isLoopbackHost(host string) (bool, error) {
ip := net.ParseIP(host)
if ip != nil {
return ip.IsLoopback(), nil
}
// Host is not an ip, perform lookup
addrs, err := lookupHostFn(host)
if err != nil {
return false, err
}
for _, addr := range addrs {
if !net.ParseIP(addr).IsLoopback() {
return false, nil
}
}
return true, nil
}
func localHTTPCredProvider(cfg aws.Config, handlers request.Handlers, u string) credentials.Provider {
var errMsg string
parsed, err := url.Parse(u)
if err != nil {
errMsg = fmt.Sprintf("invalid URL, %v", err)
} else {
host := aws.URLHostname(parsed)
if len(host) == 0 {
errMsg = "unable to parse host from local HTTP cred provider URL"
} else if isLoopback, loopbackErr := isLoopbackHost(host); loopbackErr != nil {
errMsg = fmt.Sprintf("failed to resolve host %q, %v", host, loopbackErr)
} else if !isLoopback {
errMsg = fmt.Sprintf("invalid endpoint host, %q, only loopback hosts are allowed.", host)
}
}
if len(errMsg) > 0 {
if cfg.Logger != nil {
cfg.Logger.Log("Ignoring, HTTP credential provider", errMsg, err)
}
return credentials.ErrorProvider{
Err: awserr.New("CredentialsEndpointError", errMsg, err),
ProviderName: endpointcreds.ProviderName,
}
}
return httpCredProvider(cfg, handlers, u)
}
func httpCredProvider(cfg aws.Config, handlers request.Handlers, u string) credentials.Provider {
return endpointcreds.NewProviderClient(cfg, handlers, u,
func(p *endpointcreds.Provider) {
p.ExpiryWindow = 5 * time.Minute
p.AuthorizationToken = os.Getenv(httpProviderAuthorizationEnvVar)
},
)
}
func ec2RoleProvider(cfg aws.Config, handlers request.Handlers) credentials.Provider {
resolver := cfg.EndpointResolver
if resolver == nil {
resolver = endpoints.DefaultResolver()
}
e, _ := resolver.EndpointFor(endpoints.Ec2metadataServiceID, "")
return &ec2rolecreds.EC2RoleProvider{
Client: ec2metadata.NewClient(cfg, handlers, e.URL, e.SigningRegion),
ExpiryWindow: 5 * time.Minute,
}
}

27
vendor/github.com/aws/aws-sdk-go/aws/defaults/shared_config.go generated vendored Normal file
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package defaults
import (
"github.com/aws/aws-sdk-go/internal/shareddefaults"
)
// SharedCredentialsFilename returns the SDK's default file path
// for the shared credentials file.
//
// Builds the shared config file path based on the OS's platform.
//
// - Linux/Unix: $HOME/.aws/credentials
// - Windows: %USERPROFILE%\.aws\credentials
func SharedCredentialsFilename() string {
return shareddefaults.SharedCredentialsFilename()
}
// SharedConfigFilename returns the SDK's default file path for
// the shared config file.
//
// Builds the shared config file path based on the OS's platform.
//
// - Linux/Unix: $HOME/.aws/config
// - Windows: %USERPROFILE%\.aws\config
func SharedConfigFilename() string {
return shareddefaults.SharedConfigFilename()
}

56
vendor/github.com/aws/aws-sdk-go/aws/doc.go generated vendored Normal file
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// Package aws provides the core SDK's utilities and shared types. Use this package's
// utilities to simplify setting and reading API operations parameters.
//
// Value and Pointer Conversion Utilities
//
// This package includes a helper conversion utility for each scalar type the SDK's
// API use. These utilities make getting a pointer of the scalar, and dereferencing
// a pointer easier.
//
// Each conversion utility comes in two forms. Value to Pointer and Pointer to Value.
// The Pointer to value will safely dereference the pointer and return its value.
// If the pointer was nil, the scalar's zero value will be returned.
//
// The value to pointer functions will be named after the scalar type. So get a
// *string from a string value use the "String" function. This makes it easy to
// to get pointer of a literal string value, because getting the address of a
// literal requires assigning the value to a variable first.
//
// var strPtr *string
//
// // Without the SDK's conversion functions
// str := "my string"
// strPtr = &str
//
// // With the SDK's conversion functions
// strPtr = aws.String("my string")
//
// // Convert *string to string value
// str = aws.StringValue(strPtr)
//
// In addition to scalars the aws package also includes conversion utilities for
// map and slice for commonly types used in API parameters. The map and slice
// conversion functions use similar naming pattern as the scalar conversion
// functions.
//
// var strPtrs []*string
// var strs []string = []string{"Go", "Gophers", "Go"}
//
// // Convert []string to []*string
// strPtrs = aws.StringSlice(strs)
//
// // Convert []*string to []string
// strs = aws.StringValueSlice(strPtrs)
//
// SDK Default HTTP Client
//
// The SDK will use the http.DefaultClient if a HTTP client is not provided to
// the SDK's Session, or service client constructor. This means that if the
// http.DefaultClient is modified by other components of your application the
// modifications will be picked up by the SDK as well.
//
// In some cases this might be intended, but it is a better practice to create
// a custom HTTP Client to share explicitly through your application. You can
// configure the SDK to use the custom HTTP Client by setting the HTTPClient
// value of the SDK's Config type when creating a Session or service client.
package aws

250
vendor/github.com/aws/aws-sdk-go/aws/ec2metadata/api.go generated vendored Normal file
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package ec2metadata
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/sdkuri"
)
// getToken uses the duration to return a token for EC2 metadata service,
// or an error if the request failed.
func (c *EC2Metadata) getToken(ctx aws.Context, duration time.Duration) (tokenOutput, error) {
op := &request.Operation{
Name: "GetToken",
HTTPMethod: "PUT",
HTTPPath: "/latest/api/token",
}
var output tokenOutput
req := c.NewRequest(op, nil, &output)
req.SetContext(ctx)
// remove the fetch token handler from the request handlers to avoid infinite recursion
req.Handlers.Sign.RemoveByName(fetchTokenHandlerName)
// Swap the unmarshalMetadataHandler with unmarshalTokenHandler on this request.
req.Handlers.Unmarshal.Swap(unmarshalMetadataHandlerName, unmarshalTokenHandler)
ttl := strconv.FormatInt(int64(duration/time.Second), 10)
req.HTTPRequest.Header.Set(ttlHeader, ttl)
err := req.Send()
// Errors with bad request status should be returned.
if err != nil {
err = awserr.NewRequestFailure(
awserr.New(req.HTTPResponse.Status, http.StatusText(req.HTTPResponse.StatusCode), err),
req.HTTPResponse.StatusCode, req.RequestID)
}
return output, err
}
// GetMetadata uses the path provided to request information from the EC2
// instance metadata service. The content will be returned as a string, or
// error if the request failed.
func (c *EC2Metadata) GetMetadata(p string) (string, error) {
return c.GetMetadataWithContext(aws.BackgroundContext(), p)
}
// GetMetadataWithContext uses the path provided to request information from the EC2
// instance metadata service. The content will be returned as a string, or
// error if the request failed.
func (c *EC2Metadata) GetMetadataWithContext(ctx aws.Context, p string) (string, error) {
op := &request.Operation{
Name: "GetMetadata",
HTTPMethod: "GET",
HTTPPath: sdkuri.PathJoin("/latest/meta-data", p),
}
output := &metadataOutput{}
req := c.NewRequest(op, nil, output)
req.SetContext(ctx)
err := req.Send()
return output.Content, err
}
// GetUserData returns the userdata that was configured for the service. If
// there is no user-data setup for the EC2 instance a "NotFoundError" error
// code will be returned.
func (c *EC2Metadata) GetUserData() (string, error) {
return c.GetUserDataWithContext(aws.BackgroundContext())
}
// GetUserDataWithContext returns the userdata that was configured for the service. If
// there is no user-data setup for the EC2 instance a "NotFoundError" error
// code will be returned.
func (c *EC2Metadata) GetUserDataWithContext(ctx aws.Context) (string, error) {
op := &request.Operation{
Name: "GetUserData",
HTTPMethod: "GET",
HTTPPath: "/latest/user-data",
}
output := &metadataOutput{}
req := c.NewRequest(op, nil, output)
req.SetContext(ctx)
err := req.Send()
return output.Content, err
}
// GetDynamicData uses the path provided to request information from the EC2
// instance metadata service for dynamic data. The content will be returned
// as a string, or error if the request failed.
func (c *EC2Metadata) GetDynamicData(p string) (string, error) {
return c.GetDynamicDataWithContext(aws.BackgroundContext(), p)
}
// GetDynamicDataWithContext uses the path provided to request information from the EC2
// instance metadata service for dynamic data. The content will be returned
// as a string, or error if the request failed.
func (c *EC2Metadata) GetDynamicDataWithContext(ctx aws.Context, p string) (string, error) {
op := &request.Operation{
Name: "GetDynamicData",
HTTPMethod: "GET",
HTTPPath: sdkuri.PathJoin("/latest/dynamic", p),
}
output := &metadataOutput{}
req := c.NewRequest(op, nil, output)
req.SetContext(ctx)
err := req.Send()
return output.Content, err
}
// GetInstanceIdentityDocument retrieves an identity document describing an
// instance. Error is returned if the request fails or is unable to parse
// the response.
func (c *EC2Metadata) GetInstanceIdentityDocument() (EC2InstanceIdentityDocument, error) {
return c.GetInstanceIdentityDocumentWithContext(aws.BackgroundContext())
}
// GetInstanceIdentityDocumentWithContext retrieves an identity document describing an
// instance. Error is returned if the request fails or is unable to parse
// the response.
func (c *EC2Metadata) GetInstanceIdentityDocumentWithContext(ctx aws.Context) (EC2InstanceIdentityDocument, error) {
resp, err := c.GetDynamicDataWithContext(ctx, "instance-identity/document")
if err != nil {
return EC2InstanceIdentityDocument{},
awserr.New("EC2MetadataRequestError",
"failed to get EC2 instance identity document", err)
}
doc := EC2InstanceIdentityDocument{}
if err := json.NewDecoder(strings.NewReader(resp)).Decode(&doc); err != nil {
return EC2InstanceIdentityDocument{},
awserr.New(request.ErrCodeSerialization,
"failed to decode EC2 instance identity document", err)
}
return doc, nil
}
// IAMInfo retrieves IAM info from the metadata API
func (c *EC2Metadata) IAMInfo() (EC2IAMInfo, error) {
return c.IAMInfoWithContext(aws.BackgroundContext())
}
// IAMInfoWithContext retrieves IAM info from the metadata API
func (c *EC2Metadata) IAMInfoWithContext(ctx aws.Context) (EC2IAMInfo, error) {
resp, err := c.GetMetadataWithContext(ctx, "iam/info")
if err != nil {
return EC2IAMInfo{},
awserr.New("EC2MetadataRequestError",
"failed to get EC2 IAM info", err)
}
info := EC2IAMInfo{}
if err := json.NewDecoder(strings.NewReader(resp)).Decode(&info); err != nil {
return EC2IAMInfo{},
awserr.New(request.ErrCodeSerialization,
"failed to decode EC2 IAM info", err)
}
if info.Code != "Success" {
errMsg := fmt.Sprintf("failed to get EC2 IAM Info (%s)", info.Code)
return EC2IAMInfo{},
awserr.New("EC2MetadataError", errMsg, nil)
}
return info, nil
}
// Region returns the region the instance is running in.
func (c *EC2Metadata) Region() (string, error) {
return c.RegionWithContext(aws.BackgroundContext())
}
// RegionWithContext returns the region the instance is running in.
func (c *EC2Metadata) RegionWithContext(ctx aws.Context) (string, error) {
ec2InstanceIdentityDocument, err := c.GetInstanceIdentityDocumentWithContext(ctx)
if err != nil {
return "", err
}
// extract region from the ec2InstanceIdentityDocument
region := ec2InstanceIdentityDocument.Region
if len(region) == 0 {
return "", awserr.New("EC2MetadataError", "invalid region received for ec2metadata instance", nil)
}
// returns region
return region, nil
}
// Available returns if the application has access to the EC2 Metadata service.
// Can be used to determine if application is running within an EC2 Instance and
// the metadata service is available.
func (c *EC2Metadata) Available() bool {
return c.AvailableWithContext(aws.BackgroundContext())
}
// AvailableWithContext returns if the application has access to the EC2 Metadata service.
// Can be used to determine if application is running within an EC2 Instance and
// the metadata service is available.
func (c *EC2Metadata) AvailableWithContext(ctx aws.Context) bool {
if _, err := c.GetMetadataWithContext(ctx, "instance-id"); err != nil {
return false
}
return true
}
// An EC2IAMInfo provides the shape for unmarshaling
// an IAM info from the metadata API
type EC2IAMInfo struct {
Code string
LastUpdated time.Time
InstanceProfileArn string
InstanceProfileID string
}
// An EC2InstanceIdentityDocument provides the shape for unmarshaling
// an instance identity document
type EC2InstanceIdentityDocument struct {
DevpayProductCodes []string `json:"devpayProductCodes"`
MarketplaceProductCodes []string `json:"marketplaceProductCodes"`
AvailabilityZone string `json:"availabilityZone"`
PrivateIP string `json:"privateIp"`
Version string `json:"version"`
Region string `json:"region"`
InstanceID string `json:"instanceId"`
BillingProducts []string `json:"billingProducts"`
InstanceType string `json:"instanceType"`
AccountID string `json:"accountId"`
PendingTime time.Time `json:"pendingTime"`
ImageID string `json:"imageId"`
KernelID string `json:"kernelId"`
RamdiskID string `json:"ramdiskId"`
Architecture string `json:"architecture"`
}

245
vendor/github.com/aws/aws-sdk-go/aws/ec2metadata/service.go generated vendored Normal file
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// Package ec2metadata provides the client for making API calls to the
// EC2 Metadata service.
//
// This package's client can be disabled completely by setting the environment
// variable "AWS_EC2_METADATA_DISABLED=true". This environment variable set to
// true instructs the SDK to disable the EC2 Metadata client. The client cannot
// be used while the environment variable is set to true, (case insensitive).
//
// The endpoint of the EC2 IMDS client can be configured via the environment
// variable, AWS_EC2_METADATA_SERVICE_ENDPOINT when creating the client with a
// Session. See aws/session#Options.EC2IMDSEndpoint for more details.
package ec2metadata
import (
"bytes"
"io"
"net/http"
"net/url"
"os"
"strconv"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/client/metadata"
"github.com/aws/aws-sdk-go/aws/corehandlers"
"github.com/aws/aws-sdk-go/aws/request"
)
const (
// ServiceName is the name of the service.
ServiceName = "ec2metadata"
disableServiceEnvVar = "AWS_EC2_METADATA_DISABLED"
// Headers for Token and TTL
ttlHeader = "x-aws-ec2-metadata-token-ttl-seconds"
tokenHeader = "x-aws-ec2-metadata-token"
// Named Handler constants
fetchTokenHandlerName = "FetchTokenHandler"
unmarshalMetadataHandlerName = "unmarshalMetadataHandler"
unmarshalTokenHandlerName = "unmarshalTokenHandler"
enableTokenProviderHandlerName = "enableTokenProviderHandler"
// TTL constants
defaultTTL = 21600 * time.Second
ttlExpirationWindow = 30 * time.Second
)
// A EC2Metadata is an EC2 Metadata service Client.
type EC2Metadata struct {
*client.Client
}
// New creates a new instance of the EC2Metadata client with a session.
// This client is safe to use across multiple goroutines.
//
// Example:
//
// // Create a EC2Metadata client from just a session.
// svc := ec2metadata.New(mySession)
//
// // Create a EC2Metadata client with additional configuration
// svc := ec2metadata.New(mySession, aws.NewConfig().WithLogLevel(aws.LogDebugHTTPBody))
func New(p client.ConfigProvider, cfgs ...*aws.Config) *EC2Metadata {
c := p.ClientConfig(ServiceName, cfgs...)
return NewClient(*c.Config, c.Handlers, c.Endpoint, c.SigningRegion)
}
// NewClient returns a new EC2Metadata client. Should be used to create
// a client when not using a session. Generally using just New with a session
// is preferred.
//
// Will remove the URL path from the endpoint provided to ensure the EC2 IMDS
// client is able to communicate with the EC2 IMDS API.
//
// If an unmodified HTTP client is provided from the stdlib default, or no client
// the EC2RoleProvider's EC2Metadata HTTP client's timeout will be shortened.
// To disable this set Config.EC2MetadataDisableTimeoutOverride to false. Enabled by default.
func NewClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegion string, opts ...func(*client.Client)) *EC2Metadata {
if !aws.BoolValue(cfg.EC2MetadataDisableTimeoutOverride) && httpClientZero(cfg.HTTPClient) {
// If the http client is unmodified and this feature is not disabled
// set custom timeouts for EC2Metadata requests.
cfg.HTTPClient = &http.Client{
// use a shorter timeout than default because the metadata
// service is local if it is running, and to fail faster
// if not running on an ec2 instance.
Timeout: 1 * time.Second,
}
// max number of retries on the client operation
cfg.MaxRetries = aws.Int(2)
}
if u, err := url.Parse(endpoint); err == nil {
// Remove path from the endpoint since it will be added by requests.
// This is an artifact of the SDK adding `/latest` to the endpoint for
// EC2 IMDS, but this is now moved to the operation definition.
u.Path = ""
u.RawPath = ""
endpoint = u.String()
}
svc := &EC2Metadata{
Client: client.New(
cfg,
metadata.ClientInfo{
ServiceName: ServiceName,
ServiceID: ServiceName,
Endpoint: endpoint,
APIVersion: "latest",
},
handlers,
),
}
// token provider instance
tp := newTokenProvider(svc, defaultTTL)
// NamedHandler for fetching token
svc.Handlers.Sign.PushBackNamed(request.NamedHandler{
Name: fetchTokenHandlerName,
Fn: tp.fetchTokenHandler,
})
// NamedHandler for enabling token provider
svc.Handlers.Complete.PushBackNamed(request.NamedHandler{
Name: enableTokenProviderHandlerName,
Fn: tp.enableTokenProviderHandler,
})
svc.Handlers.Unmarshal.PushBackNamed(unmarshalHandler)
svc.Handlers.UnmarshalError.PushBack(unmarshalError)
svc.Handlers.Validate.Clear()
svc.Handlers.Validate.PushBack(validateEndpointHandler)
// Disable the EC2 Metadata service if the environment variable is set.
// This short-circuits the service's functionality to always fail to send
// requests.
if strings.ToLower(os.Getenv(disableServiceEnvVar)) == "true" {
svc.Handlers.Send.SwapNamed(request.NamedHandler{
Name: corehandlers.SendHandler.Name,
Fn: func(r *request.Request) {
r.HTTPResponse = &http.Response{
Header: http.Header{},
}
r.Error = awserr.New(
request.CanceledErrorCode,
"EC2 IMDS access disabled via "+disableServiceEnvVar+" env var",
nil)
},
})
}
// Add additional options to the service config
for _, option := range opts {
option(svc.Client)
}
return svc
}
func httpClientZero(c *http.Client) bool {
return c == nil || (c.Transport == nil && c.CheckRedirect == nil && c.Jar == nil && c.Timeout == 0)
}
type metadataOutput struct {
Content string
}
type tokenOutput struct {
Token string
TTL time.Duration
}
// unmarshal token handler is used to parse the response of a getToken operation
var unmarshalTokenHandler = request.NamedHandler{
Name: unmarshalTokenHandlerName,
Fn: func(r *request.Request) {
defer r.HTTPResponse.Body.Close()
var b bytes.Buffer
if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
r.Error = awserr.NewRequestFailure(awserr.New(request.ErrCodeSerialization,
"unable to unmarshal EC2 metadata response", err), r.HTTPResponse.StatusCode, r.RequestID)
return
}
v := r.HTTPResponse.Header.Get(ttlHeader)
data, ok := r.Data.(*tokenOutput)
if !ok {
return
}
data.Token = b.String()
// TTL is in seconds
i, err := strconv.ParseInt(v, 10, 64)
if err != nil {
r.Error = awserr.NewRequestFailure(awserr.New(request.ParamFormatErrCode,
"unable to parse EC2 token TTL response", err), r.HTTPResponse.StatusCode, r.RequestID)
return
}
t := time.Duration(i) * time.Second
data.TTL = t
},
}
var unmarshalHandler = request.NamedHandler{
Name: unmarshalMetadataHandlerName,
Fn: func(r *request.Request) {
defer r.HTTPResponse.Body.Close()
var b bytes.Buffer
if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
r.Error = awserr.NewRequestFailure(awserr.New(request.ErrCodeSerialization,
"unable to unmarshal EC2 metadata response", err), r.HTTPResponse.StatusCode, r.RequestID)
return
}
if data, ok := r.Data.(*metadataOutput); ok {
data.Content = b.String()
}
},
}
func unmarshalError(r *request.Request) {
defer r.HTTPResponse.Body.Close()
var b bytes.Buffer
if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
r.Error = awserr.NewRequestFailure(
awserr.New(request.ErrCodeSerialization, "unable to unmarshal EC2 metadata error response", err),
r.HTTPResponse.StatusCode, r.RequestID)
return
}
// Response body format is not consistent between metadata endpoints.
// Grab the error message as a string and include that as the source error
r.Error = awserr.NewRequestFailure(
awserr.New("EC2MetadataError", "failed to make EC2Metadata request\n"+b.String(), nil),
r.HTTPResponse.StatusCode, r.RequestID)
}
func validateEndpointHandler(r *request.Request) {
if r.ClientInfo.Endpoint == "" {
r.Error = aws.ErrMissingEndpoint
}
}

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package ec2metadata
import (
"fmt"
"net/http"
"sync/atomic"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/request"
)
// A tokenProvider struct provides access to EC2Metadata client
// and atomic instance of a token, along with configuredTTL for it.
// tokenProvider also provides an atomic flag to disable the
// fetch token operation.
// The disabled member will use 0 as false, and 1 as true.
type tokenProvider struct {
client *EC2Metadata
token atomic.Value
configuredTTL time.Duration
disabled uint32
}
// A ec2Token struct helps use of token in EC2 Metadata service ops
type ec2Token struct {
token string
credentials.Expiry
}
// newTokenProvider provides a pointer to a tokenProvider instance
func newTokenProvider(c *EC2Metadata, duration time.Duration) *tokenProvider {
return &tokenProvider{client: c, configuredTTL: duration}
}
// check if fallback is enabled
func (t *tokenProvider) fallbackEnabled() bool {
return t.client.Config.EC2MetadataEnableFallback == nil || *t.client.Config.EC2MetadataEnableFallback
}
// fetchTokenHandler fetches token for EC2Metadata service client by default.
func (t *tokenProvider) fetchTokenHandler(r *request.Request) {
// short-circuits to insecure data flow if tokenProvider is disabled.
if v := atomic.LoadUint32(&t.disabled); v == 1 && t.fallbackEnabled() {
return
}
if ec2Token, ok := t.token.Load().(ec2Token); ok && !ec2Token.IsExpired() {
r.HTTPRequest.Header.Set(tokenHeader, ec2Token.token)
return
}
output, err := t.client.getToken(r.Context(), t.configuredTTL)
if err != nil {
// only attempt fallback to insecure data flow if IMDSv1 is enabled
if !t.fallbackEnabled() {
r.Error = awserr.New("EC2MetadataError", "failed to get IMDSv2 token and fallback to IMDSv1 is disabled", err)
return
}
// change the disabled flag on token provider to true and fallback
if requestFailureError, ok := err.(awserr.RequestFailure); ok {
switch requestFailureError.StatusCode() {
case http.StatusForbidden, http.StatusNotFound, http.StatusMethodNotAllowed:
atomic.StoreUint32(&t.disabled, 1)
t.client.Config.Logger.Log(fmt.Sprintf("WARN: failed to get session token, falling back to IMDSv1: %v", requestFailureError))
case http.StatusBadRequest:
r.Error = requestFailureError
}
}
return
}
newToken := ec2Token{
token: output.Token,
}
newToken.SetExpiration(time.Now().Add(output.TTL), ttlExpirationWindow)
t.token.Store(newToken)
// Inject token header to the request.
if ec2Token, ok := t.token.Load().(ec2Token); ok {
r.HTTPRequest.Header.Set(tokenHeader, ec2Token.token)
}
}
// enableTokenProviderHandler enables the token provider
func (t *tokenProvider) enableTokenProviderHandler(r *request.Request) {
// If the error code status is 401, we enable the token provider
if e, ok := r.Error.(awserr.RequestFailure); ok && e != nil &&
e.StatusCode() == http.StatusUnauthorized {
t.token.Store(ec2Token{})
atomic.StoreUint32(&t.disabled, 0)
}
}

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package endpoints
import (
"encoding/json"
"fmt"
"io"
"github.com/aws/aws-sdk-go/aws/awserr"
)
type modelDefinition map[string]json.RawMessage
// A DecodeModelOptions are the options for how the endpoints model definition
// are decoded.
type DecodeModelOptions struct {
SkipCustomizations bool
}
// Set combines all of the option functions together.
func (d *DecodeModelOptions) Set(optFns ...func(*DecodeModelOptions)) {
for _, fn := range optFns {
fn(d)
}
}
// DecodeModel unmarshals a Regions and Endpoint model definition file into
// a endpoint Resolver. If the file format is not supported, or an error occurs
// when unmarshaling the model an error will be returned.
//
// Casting the return value of this func to a EnumPartitions will
// allow you to get a list of the partitions in the order the endpoints
// will be resolved in.
//
// resolver, err := endpoints.DecodeModel(reader)
//
// partitions := resolver.(endpoints.EnumPartitions).Partitions()
// for _, p := range partitions {
// // ... inspect partitions
// }
func DecodeModel(r io.Reader, optFns ...func(*DecodeModelOptions)) (Resolver, error) {
var opts DecodeModelOptions
opts.Set(optFns...)
// Get the version of the partition file to determine what
// unmarshaling model to use.
modelDef := modelDefinition{}
if err := json.NewDecoder(r).Decode(&modelDef); err != nil {
return nil, newDecodeModelError("failed to decode endpoints model", err)
}
var version string
if b, ok := modelDef["version"]; ok {
version = string(b)
} else {
return nil, newDecodeModelError("endpoints version not found in model", nil)
}
if version == "3" {
return decodeV3Endpoints(modelDef, opts)
}
return nil, newDecodeModelError(
fmt.Sprintf("endpoints version %s, not supported", version), nil)
}
func decodeV3Endpoints(modelDef modelDefinition, opts DecodeModelOptions) (Resolver, error) {
b, ok := modelDef["partitions"]
if !ok {
return nil, newDecodeModelError("endpoints model missing partitions", nil)
}
ps := partitions{}
if err := json.Unmarshal(b, &ps); err != nil {
return nil, newDecodeModelError("failed to decode endpoints model", err)
}
if opts.SkipCustomizations {
return ps, nil
}
// Customization
for i := 0; i < len(ps); i++ {
p := &ps[i]
custRegionalS3(p)
custRmIotDataService(p)
custFixAppAutoscalingChina(p)
custFixAppAutoscalingUsGov(p)
}
return ps, nil
}
func custRegionalS3(p *partition) {
if p.ID != "aws" {
return
}
service, ok := p.Services["s3"]
if !ok {
return
}
const awsGlobal = "aws-global"
const usEast1 = "us-east-1"
// If global endpoint already exists no customization needed.
if _, ok := service.Endpoints[endpointKey{Region: awsGlobal}]; ok {
return
}
service.PartitionEndpoint = awsGlobal
if _, ok := service.Endpoints[endpointKey{Region: usEast1}]; !ok {
service.Endpoints[endpointKey{Region: usEast1}] = endpoint{}
}
service.Endpoints[endpointKey{Region: awsGlobal}] = endpoint{
Hostname: "s3.amazonaws.com",
CredentialScope: credentialScope{
Region: usEast1,
},
}
p.Services["s3"] = service
}
func custRmIotDataService(p *partition) {
delete(p.Services, "data.iot")
}
func custFixAppAutoscalingChina(p *partition) {
if p.ID != "aws-cn" {
return
}
const serviceName = "application-autoscaling"
s, ok := p.Services[serviceName]
if !ok {
return
}
const expectHostname = `autoscaling.{region}.amazonaws.com`
serviceDefault := s.Defaults[defaultKey{}]
if e, a := expectHostname, serviceDefault.Hostname; e != a {
fmt.Printf("custFixAppAutoscalingChina: ignoring customization, expected %s, got %s\n", e, a)
return
}
serviceDefault.Hostname = expectHostname + ".cn"
s.Defaults[defaultKey{}] = serviceDefault
p.Services[serviceName] = s
}
func custFixAppAutoscalingUsGov(p *partition) {
if p.ID != "aws-us-gov" {
return
}
const serviceName = "application-autoscaling"
s, ok := p.Services[serviceName]
if !ok {
return
}
serviceDefault := s.Defaults[defaultKey{}]
if a := serviceDefault.CredentialScope.Service; a != "" {
fmt.Printf("custFixAppAutoscalingUsGov: ignoring customization, expected empty credential scope service, got %s\n", a)
return
}
if a := serviceDefault.Hostname; a != "" {
fmt.Printf("custFixAppAutoscalingUsGov: ignoring customization, expected empty hostname, got %s\n", a)
return
}
serviceDefault.CredentialScope.Service = "application-autoscaling"
serviceDefault.Hostname = "autoscaling.{region}.amazonaws.com"
if s.Defaults == nil {
s.Defaults = make(endpointDefaults)
}
s.Defaults[defaultKey{}] = serviceDefault
p.Services[serviceName] = s
}
type decodeModelError struct {
awsError
}
func newDecodeModelError(msg string, err error) decodeModelError {
return decodeModelError{
awsError: awserr.New("DecodeEndpointsModelError", msg, err),
}
}

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package endpoints
// Service identifiers
//
// Deprecated: Use client package's EndpointsID value instead of these
// ServiceIDs. These IDs are not maintained, and are out of date.
const (
A4bServiceID = "a4b" // A4b.
AcmServiceID = "acm" // Acm.
AcmPcaServiceID = "acm-pca" // AcmPca.
ApiMediatailorServiceID = "api.mediatailor" // ApiMediatailor.
ApiPricingServiceID = "api.pricing" // ApiPricing.
ApiSagemakerServiceID = "api.sagemaker" // ApiSagemaker.
ApigatewayServiceID = "apigateway" // Apigateway.
ApplicationAutoscalingServiceID = "application-autoscaling" // ApplicationAutoscaling.
Appstream2ServiceID = "appstream2" // Appstream2.
AppsyncServiceID = "appsync" // Appsync.
AthenaServiceID = "athena" // Athena.
AutoscalingServiceID = "autoscaling" // Autoscaling.
AutoscalingPlansServiceID = "autoscaling-plans" // AutoscalingPlans.
BatchServiceID = "batch" // Batch.
BudgetsServiceID = "budgets" // Budgets.
CeServiceID = "ce" // Ce.
ChimeServiceID = "chime" // Chime.
Cloud9ServiceID = "cloud9" // Cloud9.
ClouddirectoryServiceID = "clouddirectory" // Clouddirectory.
CloudformationServiceID = "cloudformation" // Cloudformation.
CloudfrontServiceID = "cloudfront" // Cloudfront.
CloudhsmServiceID = "cloudhsm" // Cloudhsm.
Cloudhsmv2ServiceID = "cloudhsmv2" // Cloudhsmv2.
CloudsearchServiceID = "cloudsearch" // Cloudsearch.
CloudtrailServiceID = "cloudtrail" // Cloudtrail.
CodebuildServiceID = "codebuild" // Codebuild.
CodecommitServiceID = "codecommit" // Codecommit.
CodedeployServiceID = "codedeploy" // Codedeploy.
CodepipelineServiceID = "codepipeline" // Codepipeline.
CodestarServiceID = "codestar" // Codestar.
CognitoIdentityServiceID = "cognito-identity" // CognitoIdentity.
CognitoIdpServiceID = "cognito-idp" // CognitoIdp.
CognitoSyncServiceID = "cognito-sync" // CognitoSync.
ComprehendServiceID = "comprehend" // Comprehend.
ConfigServiceID = "config" // Config.
CurServiceID = "cur" // Cur.
DatapipelineServiceID = "datapipeline" // Datapipeline.
DaxServiceID = "dax" // Dax.
DevicefarmServiceID = "devicefarm" // Devicefarm.
DirectconnectServiceID = "directconnect" // Directconnect.
DiscoveryServiceID = "discovery" // Discovery.
DmsServiceID = "dms" // Dms.
DsServiceID = "ds" // Ds.
DynamodbServiceID = "dynamodb" // Dynamodb.
Ec2ServiceID = "ec2" // Ec2.
Ec2metadataServiceID = "ec2metadata" // Ec2metadata.
EcrServiceID = "ecr" // Ecr.
EcsServiceID = "ecs" // Ecs.
ElasticacheServiceID = "elasticache" // Elasticache.
ElasticbeanstalkServiceID = "elasticbeanstalk" // Elasticbeanstalk.
ElasticfilesystemServiceID = "elasticfilesystem" // Elasticfilesystem.
ElasticloadbalancingServiceID = "elasticloadbalancing" // Elasticloadbalancing.
ElasticmapreduceServiceID = "elasticmapreduce" // Elasticmapreduce.
ElastictranscoderServiceID = "elastictranscoder" // Elastictranscoder.
EmailServiceID = "email" // Email.
EntitlementMarketplaceServiceID = "entitlement.marketplace" // EntitlementMarketplace.
EsServiceID = "es" // Es.
EventsServiceID = "events" // Events.
FirehoseServiceID = "firehose" // Firehose.
FmsServiceID = "fms" // Fms.
GameliftServiceID = "gamelift" // Gamelift.
GlacierServiceID = "glacier" // Glacier.
GlueServiceID = "glue" // Glue.
GreengrassServiceID = "greengrass" // Greengrass.
GuarddutyServiceID = "guardduty" // Guardduty.
HealthServiceID = "health" // Health.
IamServiceID = "iam" // Iam.
ImportexportServiceID = "importexport" // Importexport.
InspectorServiceID = "inspector" // Inspector.
IotServiceID = "iot" // Iot.
IotanalyticsServiceID = "iotanalytics" // Iotanalytics.
KinesisServiceID = "kinesis" // Kinesis.
KinesisanalyticsServiceID = "kinesisanalytics" // Kinesisanalytics.
KinesisvideoServiceID = "kinesisvideo" // Kinesisvideo.
KmsServiceID = "kms" // Kms.
LambdaServiceID = "lambda" // Lambda.
LightsailServiceID = "lightsail" // Lightsail.
LogsServiceID = "logs" // Logs.
MachinelearningServiceID = "machinelearning" // Machinelearning.
MarketplacecommerceanalyticsServiceID = "marketplacecommerceanalytics" // Marketplacecommerceanalytics.
MediaconvertServiceID = "mediaconvert" // Mediaconvert.
MedialiveServiceID = "medialive" // Medialive.
MediapackageServiceID = "mediapackage" // Mediapackage.
MediastoreServiceID = "mediastore" // Mediastore.
MeteringMarketplaceServiceID = "metering.marketplace" // MeteringMarketplace.
MghServiceID = "mgh" // Mgh.
MobileanalyticsServiceID = "mobileanalytics" // Mobileanalytics.
ModelsLexServiceID = "models.lex" // ModelsLex.
MonitoringServiceID = "monitoring" // Monitoring.
MturkRequesterServiceID = "mturk-requester" // MturkRequester.
NeptuneServiceID = "neptune" // Neptune.
OpsworksServiceID = "opsworks" // Opsworks.
OpsworksCmServiceID = "opsworks-cm" // OpsworksCm.
OrganizationsServiceID = "organizations" // Organizations.
PinpointServiceID = "pinpoint" // Pinpoint.
PollyServiceID = "polly" // Polly.
RdsServiceID = "rds" // Rds.
RedshiftServiceID = "redshift" // Redshift.
RekognitionServiceID = "rekognition" // Rekognition.
ResourceGroupsServiceID = "resource-groups" // ResourceGroups.
Route53ServiceID = "route53" // Route53.
Route53domainsServiceID = "route53domains" // Route53domains.
RuntimeLexServiceID = "runtime.lex" // RuntimeLex.
RuntimeSagemakerServiceID = "runtime.sagemaker" // RuntimeSagemaker.
S3ServiceID = "s3" // S3.
S3ControlServiceID = "s3-control" // S3Control.
SagemakerServiceID = "api.sagemaker" // Sagemaker.
SdbServiceID = "sdb" // Sdb.
SecretsmanagerServiceID = "secretsmanager" // Secretsmanager.
ServerlessrepoServiceID = "serverlessrepo" // Serverlessrepo.
ServicecatalogServiceID = "servicecatalog" // Servicecatalog.
ServicediscoveryServiceID = "servicediscovery" // Servicediscovery.
ShieldServiceID = "shield" // Shield.
SmsServiceID = "sms" // Sms.
SnowballServiceID = "snowball" // Snowball.
SnsServiceID = "sns" // Sns.
SqsServiceID = "sqs" // Sqs.
SsmServiceID = "ssm" // Ssm.
StatesServiceID = "states" // States.
StoragegatewayServiceID = "storagegateway" // Storagegateway.
StreamsDynamodbServiceID = "streams.dynamodb" // StreamsDynamodb.
StsServiceID = "sts" // Sts.
SupportServiceID = "support" // Support.
SwfServiceID = "swf" // Swf.
TaggingServiceID = "tagging" // Tagging.
TransferServiceID = "transfer" // Transfer.
TranslateServiceID = "translate" // Translate.
WafServiceID = "waf" // Waf.
WafRegionalServiceID = "waf-regional" // WafRegional.
WorkdocsServiceID = "workdocs" // Workdocs.
WorkmailServiceID = "workmail" // Workmail.
WorkspacesServiceID = "workspaces" // Workspaces.
XrayServiceID = "xray" // Xray.
)

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// Package endpoints provides the types and functionality for defining regions
// and endpoints, as well as querying those definitions.
//
// The SDK's Regions and Endpoints metadata is code generated into the endpoints
// package, and is accessible via the DefaultResolver function. This function
// returns a endpoint Resolver will search the metadata and build an associated
// endpoint if one is found. The default resolver will search all partitions
// known by the SDK. e.g AWS Standard (aws), AWS China (aws-cn), and
// AWS GovCloud (US) (aws-us-gov).
// .
//
// # Enumerating Regions and Endpoint Metadata
//
// Casting the Resolver returned by DefaultResolver to a EnumPartitions interface
// will allow you to get access to the list of underlying Partitions with the
// Partitions method. This is helpful if you want to limit the SDK's endpoint
// resolving to a single partition, or enumerate regions, services, and endpoints
// in the partition.
//
// resolver := endpoints.DefaultResolver()
// partitions := resolver.(endpoints.EnumPartitions).Partitions()
//
// for _, p := range partitions {
// fmt.Println("Regions for", p.ID())
// for id, _ := range p.Regions() {
// fmt.Println("*", id)
// }
//
// fmt.Println("Services for", p.ID())
// for id, _ := range p.Services() {
// fmt.Println("*", id)
// }
// }
//
// # Using Custom Endpoints
//
// The endpoints package also gives you the ability to use your own logic how
// endpoints are resolved. This is a great way to define a custom endpoint
// for select services, without passing that logic down through your code.
//
// If a type implements the Resolver interface it can be used to resolve
// endpoints. To use this with the SDK's Session and Config set the value
// of the type to the EndpointsResolver field of aws.Config when initializing
// the session, or service client.
//
// In addition the ResolverFunc is a wrapper for a func matching the signature
// of Resolver.EndpointFor, converting it to a type that satisfies the
// Resolver interface.
//
// myCustomResolver := func(service, region string, optFns ...func(*endpoints.Options)) (endpoints.ResolvedEndpoint, error) {
// if service == endpoints.S3ServiceID {
// return endpoints.ResolvedEndpoint{
// URL: "s3.custom.endpoint.com",
// SigningRegion: "custom-signing-region",
// }, nil
// }
//
// return endpoints.DefaultResolver().EndpointFor(service, region, optFns...)
// }
//
// sess := session.Must(session.NewSession(&aws.Config{
// Region: aws.String("us-west-2"),
// EndpointResolver: endpoints.ResolverFunc(myCustomResolver),
// }))
package endpoints

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vendor/github.com/aws/aws-sdk-go/aws/endpoints/endpoints.go generated vendored Normal file
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package endpoints
import (
"fmt"
"regexp"
"strings"
"github.com/aws/aws-sdk-go/aws/awserr"
)
// A Logger is a minimalistic interface for the SDK to log messages to.
type Logger interface {
Log(...interface{})
}
// DualStackEndpointState is a constant to describe the dual-stack endpoint resolution
// behavior.
type DualStackEndpointState uint
const (
// DualStackEndpointStateUnset is the default value behavior for dual-stack endpoint
// resolution.
DualStackEndpointStateUnset DualStackEndpointState = iota
// DualStackEndpointStateEnabled enable dual-stack endpoint resolution for endpoints.
DualStackEndpointStateEnabled
// DualStackEndpointStateDisabled disables dual-stack endpoint resolution for endpoints.
DualStackEndpointStateDisabled
)
// FIPSEndpointState is a constant to describe the FIPS endpoint resolution behavior.
type FIPSEndpointState uint
const (
// FIPSEndpointStateUnset is the default value behavior for FIPS endpoint resolution.
FIPSEndpointStateUnset FIPSEndpointState = iota
// FIPSEndpointStateEnabled enables FIPS endpoint resolution for service endpoints.
FIPSEndpointStateEnabled
// FIPSEndpointStateDisabled disables FIPS endpoint resolution for endpoints.
FIPSEndpointStateDisabled
)
// Options provide the configuration needed to direct how the
// endpoints will be resolved.
type Options struct {
// DisableSSL forces the endpoint to be resolved as HTTP.
// instead of HTTPS if the service supports it.
DisableSSL bool
// Sets the resolver to resolve the endpoint as a dualstack endpoint
// for the service. If dualstack support for a service is not known and
// StrictMatching is not enabled a dualstack endpoint for the service will
// be returned. This endpoint may not be valid. If StrictMatching is
// enabled only services that are known to support dualstack will return
// dualstack endpoints.
//
// Deprecated: This option will continue to function for S3 and S3 Control for backwards compatibility.
// UseDualStackEndpoint should be used to enable usage of a service's dual-stack endpoint for all service clients
// moving forward. For S3 and S3 Control, when UseDualStackEndpoint is set to a non-zero value it takes higher
// precedence then this option.
UseDualStack bool
// Sets the resolver to resolve a dual-stack endpoint for the service.
UseDualStackEndpoint DualStackEndpointState
// UseFIPSEndpoint specifies the resolver must resolve a FIPS endpoint.
UseFIPSEndpoint FIPSEndpointState
// Enables strict matching of services and regions resolved endpoints.
// If the partition doesn't enumerate the exact service and region an
// error will be returned. This option will prevent returning endpoints
// that look valid, but may not resolve to any real endpoint.
StrictMatching bool
// Enables resolving a service endpoint based on the region provided if the
// service does not exist. The service endpoint ID will be used as the service
// domain name prefix. By default the endpoint resolver requires the service
// to be known when resolving endpoints.
//
// If resolving an endpoint on the partition list the provided region will
// be used to determine which partition's domain name pattern to the service
// endpoint ID with. If both the service and region are unknown and resolving
// the endpoint on partition list an UnknownEndpointError error will be returned.
//
// If resolving and endpoint on a partition specific resolver that partition's
// domain name pattern will be used with the service endpoint ID. If both
// region and service do not exist when resolving an endpoint on a specific
// partition the partition's domain pattern will be used to combine the
// endpoint and region together.
//
// This option is ignored if StrictMatching is enabled.
ResolveUnknownService bool
// Specifies the EC2 Instance Metadata Service default endpoint selection mode (IPv4 or IPv6)
EC2MetadataEndpointMode EC2IMDSEndpointModeState
// STS Regional Endpoint flag helps with resolving the STS endpoint
STSRegionalEndpoint STSRegionalEndpoint
// S3 Regional Endpoint flag helps with resolving the S3 endpoint
S3UsEast1RegionalEndpoint S3UsEast1RegionalEndpoint
// ResolvedRegion is the resolved region string. If provided (non-zero length) it takes priority
// over the region name passed to the ResolveEndpoint call.
ResolvedRegion string
// Logger is the logger that will be used to log messages.
Logger Logger
// Determines whether logging of deprecated endpoints usage is enabled.
LogDeprecated bool
}
func (o Options) getEndpointVariant(service string) (v endpointVariant) {
const s3 = "s3"
const s3Control = "s3-control"
if (o.UseDualStackEndpoint == DualStackEndpointStateEnabled) ||
((service == s3 || service == s3Control) && (o.UseDualStackEndpoint == DualStackEndpointStateUnset && o.UseDualStack)) {
v |= dualStackVariant
}
if o.UseFIPSEndpoint == FIPSEndpointStateEnabled {
v |= fipsVariant
}
return v
}
// EC2IMDSEndpointModeState is an enum configuration variable describing the client endpoint mode.
type EC2IMDSEndpointModeState uint
// Enumeration values for EC2IMDSEndpointModeState
const (
EC2IMDSEndpointModeStateUnset EC2IMDSEndpointModeState = iota
EC2IMDSEndpointModeStateIPv4
EC2IMDSEndpointModeStateIPv6
)
// SetFromString sets the EC2IMDSEndpointModeState based on the provided string value. Unknown values will default to EC2IMDSEndpointModeStateUnset
func (e *EC2IMDSEndpointModeState) SetFromString(v string) error {
v = strings.TrimSpace(v)
switch {
case len(v) == 0:
*e = EC2IMDSEndpointModeStateUnset
case strings.EqualFold(v, "IPv6"):
*e = EC2IMDSEndpointModeStateIPv6
case strings.EqualFold(v, "IPv4"):
*e = EC2IMDSEndpointModeStateIPv4
default:
return fmt.Errorf("unknown EC2 IMDS endpoint mode, must be either IPv6 or IPv4")
}
return nil
}
// STSRegionalEndpoint is an enum for the states of the STS Regional Endpoint
// options.
type STSRegionalEndpoint int
func (e STSRegionalEndpoint) String() string {
switch e {
case LegacySTSEndpoint:
return "legacy"
case RegionalSTSEndpoint:
return "regional"
case UnsetSTSEndpoint:
return ""
default:
return "unknown"
}
}
const (
// UnsetSTSEndpoint represents that STS Regional Endpoint flag is not specified.
UnsetSTSEndpoint STSRegionalEndpoint = iota
// LegacySTSEndpoint represents when STS Regional Endpoint flag is specified
// to use legacy endpoints.
LegacySTSEndpoint
// RegionalSTSEndpoint represents when STS Regional Endpoint flag is specified
// to use regional endpoints.
RegionalSTSEndpoint
)
// GetSTSRegionalEndpoint function returns the STSRegionalEndpointFlag based
// on the input string provided in env config or shared config by the user.
//
// `legacy`, `regional` are the only case-insensitive valid strings for
// resolving the STS regional Endpoint flag.
func GetSTSRegionalEndpoint(s string) (STSRegionalEndpoint, error) {
switch {
case strings.EqualFold(s, "legacy"):
return LegacySTSEndpoint, nil
case strings.EqualFold(s, "regional"):
return RegionalSTSEndpoint, nil
default:
return UnsetSTSEndpoint, fmt.Errorf("unable to resolve the value of STSRegionalEndpoint for %v", s)
}
}
// S3UsEast1RegionalEndpoint is an enum for the states of the S3 us-east-1
// Regional Endpoint options.
type S3UsEast1RegionalEndpoint int
func (e S3UsEast1RegionalEndpoint) String() string {
switch e {
case LegacyS3UsEast1Endpoint:
return "legacy"
case RegionalS3UsEast1Endpoint:
return "regional"
case UnsetS3UsEast1Endpoint:
return ""
default:
return "unknown"
}
}
const (
// UnsetS3UsEast1Endpoint represents that S3 Regional Endpoint flag is not
// specified.
UnsetS3UsEast1Endpoint S3UsEast1RegionalEndpoint = iota
// LegacyS3UsEast1Endpoint represents when S3 Regional Endpoint flag is
// specified to use legacy endpoints.
LegacyS3UsEast1Endpoint
// RegionalS3UsEast1Endpoint represents when S3 Regional Endpoint flag is
// specified to use regional endpoints.
RegionalS3UsEast1Endpoint
)
// GetS3UsEast1RegionalEndpoint function returns the S3UsEast1RegionalEndpointFlag based
// on the input string provided in env config or shared config by the user.
//
// `legacy`, `regional` are the only case-insensitive valid strings for
// resolving the S3 regional Endpoint flag.
func GetS3UsEast1RegionalEndpoint(s string) (S3UsEast1RegionalEndpoint, error) {
switch {
case strings.EqualFold(s, "legacy"):
return LegacyS3UsEast1Endpoint, nil
case strings.EqualFold(s, "regional"):
return RegionalS3UsEast1Endpoint, nil
default:
return UnsetS3UsEast1Endpoint,
fmt.Errorf("unable to resolve the value of S3UsEast1RegionalEndpoint for %v", s)
}
}
// Set combines all of the option functions together.
func (o *Options) Set(optFns ...func(*Options)) {
for _, fn := range optFns {
fn(o)
}
}
// DisableSSLOption sets the DisableSSL options. Can be used as a functional
// option when resolving endpoints.
func DisableSSLOption(o *Options) {
o.DisableSSL = true
}
// UseDualStackOption sets the UseDualStack option. Can be used as a functional
// option when resolving endpoints.
//
// Deprecated: UseDualStackEndpointOption should be used to enable usage of a service's dual-stack endpoint.
// When DualStackEndpointState is set to a non-zero value it takes higher precedence then this option.
func UseDualStackOption(o *Options) {
o.UseDualStack = true
}
// UseDualStackEndpointOption sets the UseDualStackEndpoint option to enabled. Can be used as a functional
// option when resolving endpoints.
func UseDualStackEndpointOption(o *Options) {
o.UseDualStackEndpoint = DualStackEndpointStateEnabled
}
// UseFIPSEndpointOption sets the UseFIPSEndpoint option to enabled. Can be used as a functional
// option when resolving endpoints.
func UseFIPSEndpointOption(o *Options) {
o.UseFIPSEndpoint = FIPSEndpointStateEnabled
}
// StrictMatchingOption sets the StrictMatching option. Can be used as a functional
// option when resolving endpoints.
func StrictMatchingOption(o *Options) {
o.StrictMatching = true
}
// ResolveUnknownServiceOption sets the ResolveUnknownService option. Can be used
// as a functional option when resolving endpoints.
func ResolveUnknownServiceOption(o *Options) {
o.ResolveUnknownService = true
}
// STSRegionalEndpointOption enables the STS endpoint resolver behavior to resolve
// STS endpoint to their regional endpoint, instead of the global endpoint.
func STSRegionalEndpointOption(o *Options) {
o.STSRegionalEndpoint = RegionalSTSEndpoint
}
// A Resolver provides the interface for functionality to resolve endpoints.
// The build in Partition and DefaultResolver return value satisfy this interface.
type Resolver interface {
EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
}
// ResolverFunc is a helper utility that wraps a function so it satisfies the
// Resolver interface. This is useful when you want to add additional endpoint
// resolving logic, or stub out specific endpoints with custom values.
type ResolverFunc func(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
// EndpointFor wraps the ResolverFunc function to satisfy the Resolver interface.
func (fn ResolverFunc) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
return fn(service, region, opts...)
}
var schemeRE = regexp.MustCompile("^([^:]+)://")
// AddScheme adds the HTTP or HTTPS schemes to a endpoint URL if there is no
// scheme. If disableSSL is true HTTP will set HTTP instead of the default HTTPS.
//
// If disableSSL is set, it will only set the URL's scheme if the URL does not
// contain a scheme.
func AddScheme(endpoint string, disableSSL bool) string {
if !schemeRE.MatchString(endpoint) {
scheme := "https"
if disableSSL {
scheme = "http"
}
endpoint = fmt.Sprintf("%s://%s", scheme, endpoint)
}
return endpoint
}
// EnumPartitions a provides a way to retrieve the underlying partitions that
// make up the SDK's default Resolver, or any resolver decoded from a model
// file.
//
// Use this interface with DefaultResolver and DecodeModels to get the list of
// Partitions.
type EnumPartitions interface {
Partitions() []Partition
}
// RegionsForService returns a map of regions for the partition and service.
// If either the partition or service does not exist false will be returned
// as the second parameter.
//
// This example shows how to get the regions for DynamoDB in the AWS partition.
//
// rs, exists := endpoints.RegionsForService(endpoints.DefaultPartitions(), endpoints.AwsPartitionID, endpoints.DynamodbServiceID)
//
// This is equivalent to using the partition directly.
//
// rs := endpoints.AwsPartition().Services()[endpoints.DynamodbServiceID].Regions()
func RegionsForService(ps []Partition, partitionID, serviceID string) (map[string]Region, bool) {
for _, p := range ps {
if p.ID() != partitionID {
continue
}
if _, ok := p.p.Services[serviceID]; !(ok || serviceID == Ec2metadataServiceID) {
break
}
s := Service{
id: serviceID,
p: p.p,
}
return s.Regions(), true
}
return map[string]Region{}, false
}
// PartitionForRegion returns the first partition which includes the region
// passed in. This includes both known regions and regions which match
// a pattern supported by the partition which may include regions that are
// not explicitly known by the partition. Use the Regions method of the
// returned Partition if explicit support is needed.
func PartitionForRegion(ps []Partition, regionID string) (Partition, bool) {
for _, p := range ps {
if _, ok := p.p.Regions[regionID]; ok || p.p.RegionRegex.MatchString(regionID) {
return p, true
}
}
return Partition{}, false
}
// A Partition provides the ability to enumerate the partition's regions
// and services.
type Partition struct {
id, dnsSuffix string
p *partition
}
// DNSSuffix returns the base domain name of the partition.
func (p Partition) DNSSuffix() string { return p.dnsSuffix }
// ID returns the identifier of the partition.
func (p Partition) ID() string { return p.id }
// EndpointFor attempts to resolve the endpoint based on service and region.
// See Options for information on configuring how the endpoint is resolved.
//
// If the service cannot be found in the metadata the UnknownServiceError
// error will be returned. This validation will occur regardless if
// StrictMatching is enabled. To enable resolving unknown services set the
// "ResolveUnknownService" option to true. When StrictMatching is disabled
// this option allows the partition resolver to resolve a endpoint based on
// the service endpoint ID provided.
//
// When resolving endpoints you can choose to enable StrictMatching. This will
// require the provided service and region to be known by the partition.
// If the endpoint cannot be strictly resolved an error will be returned. This
// mode is useful to ensure the endpoint resolved is valid. Without
// StrictMatching enabled the endpoint returned may look valid but may not work.
// StrictMatching requires the SDK to be updated if you want to take advantage
// of new regions and services expansions.
//
// Errors that can be returned.
// - UnknownServiceError
// - UnknownEndpointError
func (p Partition) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
return p.p.EndpointFor(service, region, opts...)
}
// Regions returns a map of Regions indexed by their ID. This is useful for
// enumerating over the regions in a partition.
func (p Partition) Regions() map[string]Region {
rs := make(map[string]Region, len(p.p.Regions))
for id, r := range p.p.Regions {
rs[id] = Region{
id: id,
desc: r.Description,
p: p.p,
}
}
return rs
}
// Services returns a map of Service indexed by their ID. This is useful for
// enumerating over the services in a partition.
func (p Partition) Services() map[string]Service {
ss := make(map[string]Service, len(p.p.Services))
for id := range p.p.Services {
ss[id] = Service{
id: id,
p: p.p,
}
}
// Since we have removed the customization that injected this into the model
// we still need to pretend that this is a modeled service.
if _, ok := ss[Ec2metadataServiceID]; !ok {
ss[Ec2metadataServiceID] = Service{
id: Ec2metadataServiceID,
p: p.p,
}
}
return ss
}
// A Region provides information about a region, and ability to resolve an
// endpoint from the context of a region, given a service.
type Region struct {
id, desc string
p *partition
}
// ID returns the region's identifier.
func (r Region) ID() string { return r.id }
// Description returns the region's description. The region description
// is free text, it can be empty, and it may change between SDK releases.
func (r Region) Description() string { return r.desc }
// ResolveEndpoint resolves an endpoint from the context of the region given
// a service. See Partition.EndpointFor for usage and errors that can be returned.
func (r Region) ResolveEndpoint(service string, opts ...func(*Options)) (ResolvedEndpoint, error) {
return r.p.EndpointFor(service, r.id, opts...)
}
// Services returns a list of all services that are known to be in this region.
func (r Region) Services() map[string]Service {
ss := map[string]Service{}
for id, s := range r.p.Services {
if _, ok := s.Endpoints[endpointKey{Region: r.id}]; ok {
ss[id] = Service{
id: id,
p: r.p,
}
}
}
return ss
}
// A Service provides information about a service, and ability to resolve an
// endpoint from the context of a service, given a region.
type Service struct {
id string
p *partition
}
// ID returns the identifier for the service.
func (s Service) ID() string { return s.id }
// ResolveEndpoint resolves an endpoint from the context of a service given
// a region. See Partition.EndpointFor for usage and errors that can be returned.
func (s Service) ResolveEndpoint(region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
return s.p.EndpointFor(s.id, region, opts...)
}
// Regions returns a map of Regions that the service is present in.
//
// A region is the AWS region the service exists in. Whereas a Endpoint is
// an URL that can be resolved to a instance of a service.
func (s Service) Regions() map[string]Region {
rs := map[string]Region{}
service, ok := s.p.Services[s.id]
// Since ec2metadata customization has been removed we need to check
// if it was defined in non-standard endpoints.json file. If it's not
// then we can return the empty map as there is no regional-endpoints for IMDS.
// Otherwise, we iterate need to iterate the non-standard model.
if s.id == Ec2metadataServiceID && !ok {
return rs
}
for id := range service.Endpoints {
if id.Variant != 0 {
continue
}
if r, ok := s.p.Regions[id.Region]; ok {
rs[id.Region] = Region{
id: id.Region,
desc: r.Description,
p: s.p,
}
}
}
return rs
}
// Endpoints returns a map of Endpoints indexed by their ID for all known
// endpoints for a service.
//
// A region is the AWS region the service exists in. Whereas a Endpoint is
// an URL that can be resolved to a instance of a service.
func (s Service) Endpoints() map[string]Endpoint {
es := make(map[string]Endpoint, len(s.p.Services[s.id].Endpoints))
for id := range s.p.Services[s.id].Endpoints {
if id.Variant != 0 {
continue
}
es[id.Region] = Endpoint{
id: id.Region,
serviceID: s.id,
p: s.p,
}
}
return es
}
// A Endpoint provides information about endpoints, and provides the ability
// to resolve that endpoint for the service, and the region the endpoint
// represents.
type Endpoint struct {
id string
serviceID string
p *partition
}
// ID returns the identifier for an endpoint.
func (e Endpoint) ID() string { return e.id }
// ServiceID returns the identifier the endpoint belongs to.
func (e Endpoint) ServiceID() string { return e.serviceID }
// ResolveEndpoint resolves an endpoint from the context of a service and
// region the endpoint represents. See Partition.EndpointFor for usage and
// errors that can be returned.
func (e Endpoint) ResolveEndpoint(opts ...func(*Options)) (ResolvedEndpoint, error) {
return e.p.EndpointFor(e.serviceID, e.id, opts...)
}
// A ResolvedEndpoint is an endpoint that has been resolved based on a partition
// service, and region.
type ResolvedEndpoint struct {
// The endpoint URL
URL string
// The endpoint partition
PartitionID string
// The region that should be used for signing requests.
SigningRegion string
// The service name that should be used for signing requests.
SigningName string
// States that the signing name for this endpoint was derived from metadata
// passed in, but was not explicitly modeled.
SigningNameDerived bool
// The signing method that should be used for signing requests.
SigningMethod string
}
// So that the Error interface type can be included as an anonymous field
// in the requestError struct and not conflict with the error.Error() method.
type awsError awserr.Error
// A EndpointNotFoundError is returned when in StrictMatching mode, and the
// endpoint for the service and region cannot be found in any of the partitions.
type EndpointNotFoundError struct {
awsError
Partition string
Service string
Region string
}
// A UnknownServiceError is returned when the service does not resolve to an
// endpoint. Includes a list of all known services for the partition. Returned
// when a partition does not support the service.
type UnknownServiceError struct {
awsError
Partition string
Service string
Known []string
}
// NewUnknownServiceError builds and returns UnknownServiceError.
func NewUnknownServiceError(p, s string, known []string) UnknownServiceError {
return UnknownServiceError{
awsError: awserr.New("UnknownServiceError",
"could not resolve endpoint for unknown service", nil),
Partition: p,
Service: s,
Known: known,
}
}
// String returns the string representation of the error.
func (e UnknownServiceError) Error() string {
extra := fmt.Sprintf("partition: %q, service: %q",
e.Partition, e.Service)
if len(e.Known) > 0 {
extra += fmt.Sprintf(", known: %v", e.Known)
}
return awserr.SprintError(e.Code(), e.Message(), extra, e.OrigErr())
}
// String returns the string representation of the error.
func (e UnknownServiceError) String() string {
return e.Error()
}
// A UnknownEndpointError is returned when in StrictMatching mode and the
// service is valid, but the region does not resolve to an endpoint. Includes
// a list of all known endpoints for the service.
type UnknownEndpointError struct {
awsError
Partition string
Service string
Region string
Known []string
}
// NewUnknownEndpointError builds and returns UnknownEndpointError.
func NewUnknownEndpointError(p, s, r string, known []string) UnknownEndpointError {
return UnknownEndpointError{
awsError: awserr.New("UnknownEndpointError",
"could not resolve endpoint", nil),
Partition: p,
Service: s,
Region: r,
Known: known,
}
}
// String returns the string representation of the error.
func (e UnknownEndpointError) Error() string {
extra := fmt.Sprintf("partition: %q, service: %q, region: %q",
e.Partition, e.Service, e.Region)
if len(e.Known) > 0 {
extra += fmt.Sprintf(", known: %v", e.Known)
}
return awserr.SprintError(e.Code(), e.Message(), extra, e.OrigErr())
}
// String returns the string representation of the error.
func (e UnknownEndpointError) String() string {
return e.Error()
}

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vendor/github.com/aws/aws-sdk-go/aws/endpoints/legacy_regions.go generated vendored Normal file
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package endpoints
var legacyGlobalRegions = map[string]map[string]struct{}{
"sts": {
"ap-northeast-1": {},
"ap-south-1": {},
"ap-southeast-1": {},
"ap-southeast-2": {},
"ca-central-1": {},
"eu-central-1": {},
"eu-north-1": {},
"eu-west-1": {},
"eu-west-2": {},
"eu-west-3": {},
"sa-east-1": {},
"us-east-1": {},
"us-east-2": {},
"us-west-1": {},
"us-west-2": {},
},
"s3": {
"us-east-1": {},
},
}

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vendor/github.com/aws/aws-sdk-go/aws/endpoints/v3model.go generated vendored Normal file
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package endpoints
import (
"encoding/json"
"fmt"
"regexp"
"strconv"
"strings"
)
const (
ec2MetadataEndpointIPv6 = "http://[fd00:ec2::254]/latest"
ec2MetadataEndpointIPv4 = "http://169.254.169.254/latest"
)
const dnsSuffixTemplateKey = "{dnsSuffix}"
// defaultKey is a compound map key of a variant and other values.
type defaultKey struct {
Variant endpointVariant
ServiceVariant serviceVariant
}
// endpointKey is a compound map key of a region and associated variant value.
type endpointKey struct {
Region string
Variant endpointVariant
}
// endpointVariant is a bit field to describe the endpoints attributes.
type endpointVariant uint64
// serviceVariant is a bit field to describe the service endpoint attributes.
type serviceVariant uint64
const (
// fipsVariant indicates that the endpoint is FIPS capable.
fipsVariant endpointVariant = 1 << (64 - 1 - iota)
// dualStackVariant indicates that the endpoint is DualStack capable.
dualStackVariant
)
var regionValidationRegex = regexp.MustCompile(`^[[:alnum:]]([[:alnum:]\-]*[[:alnum:]])?$`)
type partitions []partition
func (ps partitions) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
var opt Options
opt.Set(opts...)
if len(opt.ResolvedRegion) > 0 {
region = opt.ResolvedRegion
}
for i := 0; i < len(ps); i++ {
if !ps[i].canResolveEndpoint(service, region, opt) {
continue
}
return ps[i].EndpointFor(service, region, opts...)
}
// If loose matching fallback to first partition format to use
// when resolving the endpoint.
if !opt.StrictMatching && len(ps) > 0 {
return ps[0].EndpointFor(service, region, opts...)
}
return ResolvedEndpoint{}, NewUnknownEndpointError("all partitions", service, region, []string{})
}
// Partitions satisfies the EnumPartitions interface and returns a list
// of Partitions representing each partition represented in the SDK's
// endpoints model.
func (ps partitions) Partitions() []Partition {
parts := make([]Partition, 0, len(ps))
for i := 0; i < len(ps); i++ {
parts = append(parts, ps[i].Partition())
}
return parts
}
type endpointWithVariants struct {
endpoint
Variants []endpointWithTags `json:"variants"`
}
type endpointWithTags struct {
endpoint
Tags []string `json:"tags"`
}
type endpointDefaults map[defaultKey]endpoint
func (p *endpointDefaults) UnmarshalJSON(data []byte) error {
if *p == nil {
*p = make(endpointDefaults)
}
var e endpointWithVariants
if err := json.Unmarshal(data, &e); err != nil {
return err
}
(*p)[defaultKey{Variant: 0}] = e.endpoint
e.Hostname = ""
e.DNSSuffix = ""
for _, variant := range e.Variants {
endpointVariant, unknown := parseVariantTags(variant.Tags)
if unknown {
continue
}
var ve endpoint
ve.mergeIn(e.endpoint)
ve.mergeIn(variant.endpoint)
(*p)[defaultKey{Variant: endpointVariant}] = ve
}
return nil
}
func parseVariantTags(tags []string) (ev endpointVariant, unknown bool) {
if len(tags) == 0 {
unknown = true
return
}
for _, tag := range tags {
switch {
case strings.EqualFold("fips", tag):
ev |= fipsVariant
case strings.EqualFold("dualstack", tag):
ev |= dualStackVariant
default:
unknown = true
}
}
return ev, unknown
}
type partition struct {
ID string `json:"partition"`
Name string `json:"partitionName"`
DNSSuffix string `json:"dnsSuffix"`
RegionRegex regionRegex `json:"regionRegex"`
Defaults endpointDefaults `json:"defaults"`
Regions regions `json:"regions"`
Services services `json:"services"`
}
func (p partition) Partition() Partition {
return Partition{
dnsSuffix: p.DNSSuffix,
id: p.ID,
p: &p,
}
}
func (p partition) canResolveEndpoint(service, region string, options Options) bool {
s, hasService := p.Services[service]
_, hasEndpoint := s.Endpoints[endpointKey{
Region: region,
Variant: options.getEndpointVariant(service),
}]
if hasEndpoint && hasService {
return true
}
if options.StrictMatching {
return false
}
return p.RegionRegex.MatchString(region)
}
func allowLegacyEmptyRegion(service string) bool {
legacy := map[string]struct{}{
"budgets": {},
"ce": {},
"chime": {},
"cloudfront": {},
"ec2metadata": {},
"iam": {},
"importexport": {},
"organizations": {},
"route53": {},
"sts": {},
"support": {},
"waf": {},
}
_, allowed := legacy[service]
return allowed
}
func (p partition) EndpointFor(service, region string, opts ...func(*Options)) (resolved ResolvedEndpoint, err error) {
var opt Options
opt.Set(opts...)
if len(opt.ResolvedRegion) > 0 {
region = opt.ResolvedRegion
}
s, hasService := p.Services[service]
if service == Ec2metadataServiceID && !hasService {
endpoint := getEC2MetadataEndpoint(p.ID, service, opt.EC2MetadataEndpointMode)
return endpoint, nil
}
if len(service) == 0 || !(hasService || opt.ResolveUnknownService) {
// Only return error if the resolver will not fallback to creating
// endpoint based on service endpoint ID passed in.
return resolved, NewUnknownServiceError(p.ID, service, serviceList(p.Services))
}
if len(region) == 0 && allowLegacyEmptyRegion(service) && len(s.PartitionEndpoint) != 0 {
region = s.PartitionEndpoint
}
if r, ok := isLegacyGlobalRegion(service, region, opt); ok {
region = r
}
variant := opt.getEndpointVariant(service)
endpoints := s.Endpoints
serviceDefaults, hasServiceDefault := s.Defaults[defaultKey{Variant: variant}]
// If we searched for a variant which may have no explicit service defaults,
// then we need to inherit the standard service defaults except the hostname and dnsSuffix
if variant != 0 && !hasServiceDefault {
serviceDefaults = s.Defaults[defaultKey{}]
serviceDefaults.Hostname = ""
serviceDefaults.DNSSuffix = ""
}
partitionDefaults, hasPartitionDefault := p.Defaults[defaultKey{Variant: variant}]
var dnsSuffix string
if len(serviceDefaults.DNSSuffix) > 0 {
dnsSuffix = serviceDefaults.DNSSuffix
} else if variant == 0 {
// For legacy reasons the partition dnsSuffix is not in the defaults, so if we looked for
// a non-variant endpoint then we need to set the dnsSuffix.
dnsSuffix = p.DNSSuffix
}
noDefaults := !hasServiceDefault && !hasPartitionDefault
e, hasEndpoint := s.endpointForRegion(region, endpoints, variant)
if len(region) == 0 || (!hasEndpoint && (opt.StrictMatching || noDefaults)) {
return resolved, NewUnknownEndpointError(p.ID, service, region, endpointList(endpoints, variant))
}
defs := []endpoint{partitionDefaults, serviceDefaults}
return e.resolve(service, p.ID, region, dnsSuffixTemplateKey, dnsSuffix, defs, opt)
}
func getEC2MetadataEndpoint(partitionID, service string, mode EC2IMDSEndpointModeState) ResolvedEndpoint {
switch mode {
case EC2IMDSEndpointModeStateIPv6:
return ResolvedEndpoint{
URL: ec2MetadataEndpointIPv6,
PartitionID: partitionID,
SigningRegion: "aws-global",
SigningName: service,
SigningNameDerived: true,
SigningMethod: "v4",
}
case EC2IMDSEndpointModeStateIPv4:
fallthrough
default:
return ResolvedEndpoint{
URL: ec2MetadataEndpointIPv4,
PartitionID: partitionID,
SigningRegion: "aws-global",
SigningName: service,
SigningNameDerived: true,
SigningMethod: "v4",
}
}
}
func isLegacyGlobalRegion(service string, region string, opt Options) (string, bool) {
if opt.getEndpointVariant(service) != 0 {
return "", false
}
const (
sts = "sts"
s3 = "s3"
awsGlobal = "aws-global"
)
switch {
case service == sts && opt.STSRegionalEndpoint == RegionalSTSEndpoint:
return region, false
case service == s3 && opt.S3UsEast1RegionalEndpoint == RegionalS3UsEast1Endpoint:
return region, false
default:
if _, ok := legacyGlobalRegions[service][region]; ok {
return awsGlobal, true
}
}
return region, false
}
func serviceList(ss services) []string {
list := make([]string, 0, len(ss))
for k := range ss {
list = append(list, k)
}
return list
}
func endpointList(es serviceEndpoints, variant endpointVariant) []string {
list := make([]string, 0, len(es))
for k := range es {
if k.Variant != variant {
continue
}
list = append(list, k.Region)
}
return list
}
type regionRegex struct {
*regexp.Regexp
}
func (rr *regionRegex) UnmarshalJSON(b []byte) (err error) {
// Strip leading and trailing quotes
regex, err := strconv.Unquote(string(b))
if err != nil {
return fmt.Errorf("unable to strip quotes from regex, %v", err)
}
rr.Regexp, err = regexp.Compile(regex)
if err != nil {
return fmt.Errorf("unable to unmarshal region regex, %v", err)
}
return nil
}
type regions map[string]region
type region struct {
Description string `json:"description"`
}
type services map[string]service
type service struct {
PartitionEndpoint string `json:"partitionEndpoint"`
IsRegionalized boxedBool `json:"isRegionalized,omitempty"`
Defaults endpointDefaults `json:"defaults"`
Endpoints serviceEndpoints `json:"endpoints"`
}
func (s *service) endpointForRegion(region string, endpoints serviceEndpoints, variant endpointVariant) (endpoint, bool) {
if e, ok := endpoints[endpointKey{Region: region, Variant: variant}]; ok {
return e, true
}
if s.IsRegionalized == boxedFalse {
return endpoints[endpointKey{Region: s.PartitionEndpoint, Variant: variant}], region == s.PartitionEndpoint
}
// Unable to find any matching endpoint, return
// blank that will be used for generic endpoint creation.
return endpoint{}, false
}
type serviceEndpoints map[endpointKey]endpoint
func (s *serviceEndpoints) UnmarshalJSON(data []byte) error {
if *s == nil {
*s = make(serviceEndpoints)
}
var regionToEndpoint map[string]endpointWithVariants
if err := json.Unmarshal(data, &regionToEndpoint); err != nil {
return err
}
for region, e := range regionToEndpoint {
(*s)[endpointKey{Region: region}] = e.endpoint
e.Hostname = ""
e.DNSSuffix = ""
for _, variant := range e.Variants {
endpointVariant, unknown := parseVariantTags(variant.Tags)
if unknown {
continue
}
var ve endpoint
ve.mergeIn(e.endpoint)
ve.mergeIn(variant.endpoint)
(*s)[endpointKey{Region: region, Variant: endpointVariant}] = ve
}
}
return nil
}
type endpoint struct {
Hostname string `json:"hostname"`
Protocols []string `json:"protocols"`
CredentialScope credentialScope `json:"credentialScope"`
DNSSuffix string `json:"dnsSuffix"`
// Signature Version not used
SignatureVersions []string `json:"signatureVersions"`
// SSLCommonName not used.
SSLCommonName string `json:"sslCommonName"`
Deprecated boxedBool `json:"deprecated"`
}
// isZero returns whether the endpoint structure is an empty (zero) value.
func (e endpoint) isZero() bool {
switch {
case len(e.Hostname) != 0:
return false
case len(e.Protocols) != 0:
return false
case e.CredentialScope != (credentialScope{}):
return false
case len(e.SignatureVersions) != 0:
return false
case len(e.SSLCommonName) != 0:
return false
}
return true
}
const (
defaultProtocol = "https"
defaultSigner = "v4"
)
var (
protocolPriority = []string{"https", "http"}
signerPriority = []string{"v4", "v2"}
)
func getByPriority(s []string, p []string, def string) string {
if len(s) == 0 {
return def
}
for i := 0; i < len(p); i++ {
for j := 0; j < len(s); j++ {
if s[j] == p[i] {
return s[j]
}
}
}
return s[0]
}
func (e endpoint) resolve(service, partitionID, region, dnsSuffixTemplateVariable, dnsSuffix string, defs []endpoint, opts Options) (ResolvedEndpoint, error) {
var merged endpoint
for _, def := range defs {
merged.mergeIn(def)
}
merged.mergeIn(e)
e = merged
signingRegion := e.CredentialScope.Region
if len(signingRegion) == 0 {
signingRegion = region
}
signingName := e.CredentialScope.Service
var signingNameDerived bool
if len(signingName) == 0 {
signingName = service
signingNameDerived = true
}
hostname := e.Hostname
if !validateInputRegion(region) {
return ResolvedEndpoint{}, fmt.Errorf("invalid region identifier format provided")
}
if len(merged.DNSSuffix) > 0 {
dnsSuffix = merged.DNSSuffix
}
u := strings.Replace(hostname, "{service}", service, 1)
u = strings.Replace(u, "{region}", region, 1)
u = strings.Replace(u, dnsSuffixTemplateVariable, dnsSuffix, 1)
scheme := getEndpointScheme(e.Protocols, opts.DisableSSL)
u = fmt.Sprintf("%s://%s", scheme, u)
if e.Deprecated == boxedTrue && opts.LogDeprecated && opts.Logger != nil {
opts.Logger.Log(fmt.Sprintf("endpoint identifier %q, url %q marked as deprecated", region, u))
}
return ResolvedEndpoint{
URL: u,
PartitionID: partitionID,
SigningRegion: signingRegion,
SigningName: signingName,
SigningNameDerived: signingNameDerived,
SigningMethod: getByPriority(e.SignatureVersions, signerPriority, defaultSigner),
}, nil
}
func getEndpointScheme(protocols []string, disableSSL bool) string {
if disableSSL {
return "http"
}
return getByPriority(protocols, protocolPriority, defaultProtocol)
}
func (e *endpoint) mergeIn(other endpoint) {
if len(other.Hostname) > 0 {
e.Hostname = other.Hostname
}
if len(other.Protocols) > 0 {
e.Protocols = other.Protocols
}
if len(other.SignatureVersions) > 0 {
e.SignatureVersions = other.SignatureVersions
}
if len(other.CredentialScope.Region) > 0 {
e.CredentialScope.Region = other.CredentialScope.Region
}
if len(other.CredentialScope.Service) > 0 {
e.CredentialScope.Service = other.CredentialScope.Service
}
if len(other.SSLCommonName) > 0 {
e.SSLCommonName = other.SSLCommonName
}
if len(other.DNSSuffix) > 0 {
e.DNSSuffix = other.DNSSuffix
}
if other.Deprecated != boxedBoolUnset {
e.Deprecated = other.Deprecated
}
}
type credentialScope struct {
Region string `json:"region"`
Service string `json:"service"`
}
type boxedBool int
func (b *boxedBool) UnmarshalJSON(buf []byte) error {
v, err := strconv.ParseBool(string(buf))
if err != nil {
return err
}
if v {
*b = boxedTrue
} else {
*b = boxedFalse
}
return nil
}
const (
boxedBoolUnset boxedBool = iota
boxedFalse
boxedTrue
)
func validateInputRegion(region string) bool {
return regionValidationRegex.MatchString(region)
}

412
vendor/github.com/aws/aws-sdk-go/aws/endpoints/v3model_codegen.go generated vendored Normal file
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@ -0,0 +1,412 @@
//go:build codegen
// +build codegen
package endpoints
import (
"fmt"
"io"
"reflect"
"strings"
"text/template"
"unicode"
)
// A CodeGenOptions are the options for code generating the endpoints into
// Go code from the endpoints model definition.
type CodeGenOptions struct {
// Options for how the model will be decoded.
DecodeModelOptions DecodeModelOptions
// Disables code generation of the service endpoint prefix IDs defined in
// the model.
DisableGenerateServiceIDs bool
}
// Set combines all of the option functions together
func (d *CodeGenOptions) Set(optFns ...func(*CodeGenOptions)) {
for _, fn := range optFns {
fn(d)
}
}
// CodeGenModel given a endpoints model file will decode it and attempt to
// generate Go code from the model definition. Error will be returned if
// the code is unable to be generated, or decoded.
func CodeGenModel(modelFile io.Reader, outFile io.Writer, optFns ...func(*CodeGenOptions)) error {
var opts CodeGenOptions
opts.Set(optFns...)
resolver, err := DecodeModel(modelFile, func(d *DecodeModelOptions) {
*d = opts.DecodeModelOptions
})
if err != nil {
return err
}
v := struct {
Resolver
CodeGenOptions
}{
Resolver: resolver,
CodeGenOptions: opts,
}
tmpl := template.Must(template.New("tmpl").Funcs(funcMap).Parse(v3Tmpl))
if err := tmpl.ExecuteTemplate(outFile, "defaults", v); err != nil {
return fmt.Errorf("failed to execute template, %v", err)
}
return nil
}
func toSymbol(v string) string {
out := []rune{}
for _, c := range strings.Title(v) {
if !(unicode.IsNumber(c) || unicode.IsLetter(c)) {
continue
}
out = append(out, c)
}
return string(out)
}
func quoteString(v string) string {
return fmt.Sprintf("%q", v)
}
func regionConstName(p, r string) string {
return toSymbol(p) + toSymbol(r)
}
func partitionGetter(id string) string {
return fmt.Sprintf("%sPartition", toSymbol(id))
}
func partitionVarName(id string) string {
return fmt.Sprintf("%sPartition", strings.ToLower(toSymbol(id)))
}
func listPartitionNames(ps partitions) string {
names := []string{}
switch len(ps) {
case 1:
return ps[0].Name
case 2:
return fmt.Sprintf("%s and %s", ps[0].Name, ps[1].Name)
default:
for i, p := range ps {
if i == len(ps)-1 {
names = append(names, "and "+p.Name)
} else {
names = append(names, p.Name)
}
}
return strings.Join(names, ", ")
}
}
func boxedBoolIfSet(msg string, v boxedBool) string {
switch v {
case boxedTrue:
return fmt.Sprintf(msg, "boxedTrue")
case boxedFalse:
return fmt.Sprintf(msg, "boxedFalse")
default:
return ""
}
}
func stringIfSet(msg, v string) string {
if len(v) == 0 {
return ""
}
return fmt.Sprintf(msg, v)
}
func stringSliceIfSet(msg string, vs []string) string {
if len(vs) == 0 {
return ""
}
names := []string{}
for _, v := range vs {
names = append(names, `"`+v+`"`)
}
return fmt.Sprintf(msg, strings.Join(names, ","))
}
func endpointIsSet(v endpoint) bool {
return !reflect.DeepEqual(v, endpoint{})
}
func serviceSet(ps partitions) map[string]struct{} {
set := map[string]struct{}{}
for _, p := range ps {
for id := range p.Services {
set[id] = struct{}{}
}
}
return set
}
func endpointVariantSetter(variant endpointVariant) (string, error) {
if variant == 0 {
return "0", nil
}
if variant > (fipsVariant | dualStackVariant) {
return "", fmt.Errorf("unknown endpoint variant")
}
var symbols []string
if variant&fipsVariant != 0 {
symbols = append(symbols, "fipsVariant")
}
if variant&dualStackVariant != 0 {
symbols = append(symbols, "dualStackVariant")
}
v := strings.Join(symbols, "|")
return v, nil
}
func endpointKeySetter(e endpointKey) (string, error) {
var sb strings.Builder
sb.WriteString("endpointKey{\n")
sb.WriteString(fmt.Sprintf("Region: %q,\n", e.Region))
if e.Variant != 0 {
variantSetter, err := endpointVariantSetter(e.Variant)
if err != nil {
return "", err
}
sb.WriteString(fmt.Sprintf("Variant: %s,\n", variantSetter))
}
sb.WriteString("}")
return sb.String(), nil
}
func defaultKeySetter(e defaultKey) (string, error) {
var sb strings.Builder
sb.WriteString("defaultKey{\n")
if e.Variant != 0 {
variantSetter, err := endpointVariantSetter(e.Variant)
if err != nil {
return "", err
}
sb.WriteString(fmt.Sprintf("Variant: %s,\n", variantSetter))
}
sb.WriteString("}")
return sb.String(), nil
}
var funcMap = template.FuncMap{
"ToSymbol": toSymbol,
"QuoteString": quoteString,
"RegionConst": regionConstName,
"PartitionGetter": partitionGetter,
"PartitionVarName": partitionVarName,
"ListPartitionNames": listPartitionNames,
"BoxedBoolIfSet": boxedBoolIfSet,
"StringIfSet": stringIfSet,
"StringSliceIfSet": stringSliceIfSet,
"EndpointIsSet": endpointIsSet,
"ServicesSet": serviceSet,
"EndpointVariantSetter": endpointVariantSetter,
"EndpointKeySetter": endpointKeySetter,
"DefaultKeySetter": defaultKeySetter,
}
const v3Tmpl = `
{{ define "defaults" -}}
// Code generated by aws/endpoints/v3model_codegen.go. DO NOT EDIT.
package endpoints
import (
"regexp"
)
{{ template "partition consts" $.Resolver }}
{{ range $_, $partition := $.Resolver }}
{{ template "partition region consts" $partition }}
{{ end }}
{{ if not $.DisableGenerateServiceIDs -}}
{{ template "service consts" $.Resolver }}
{{- end }}
{{ template "endpoint resolvers" $.Resolver }}
{{- end }}
{{ define "partition consts" }}
// Partition identifiers
const (
{{ range $_, $p := . -}}
{{ ToSymbol $p.ID }}PartitionID = {{ QuoteString $p.ID }} // {{ $p.Name }} partition.
{{ end -}}
)
{{- end }}
{{ define "partition region consts" }}
// {{ .Name }} partition's regions.
const (
{{ range $id, $region := .Regions -}}
{{ ToSymbol $id }}RegionID = {{ QuoteString $id }} // {{ $region.Description }}.
{{ end -}}
)
{{- end }}
{{ define "service consts" }}
// Service identifiers
const (
{{ $serviceSet := ServicesSet . -}}
{{ range $id, $_ := $serviceSet -}}
{{ ToSymbol $id }}ServiceID = {{ QuoteString $id }} // {{ ToSymbol $id }}.
{{ end -}}
)
{{- end }}
{{ define "endpoint resolvers" }}
// DefaultResolver returns an Endpoint resolver that will be able
// to resolve endpoints for: {{ ListPartitionNames . }}.
//
// Use DefaultPartitions() to get the list of the default partitions.
func DefaultResolver() Resolver {
return defaultPartitions
}
// DefaultPartitions returns a list of the partitions the SDK is bundled
// with. The available partitions are: {{ ListPartitionNames . }}.
//
// partitions := endpoints.DefaultPartitions
// for _, p := range partitions {
// // ... inspect partitions
// }
func DefaultPartitions() []Partition {
return defaultPartitions.Partitions()
}
var defaultPartitions = partitions{
{{ range $_, $partition := . -}}
{{ PartitionVarName $partition.ID }},
{{ end }}
}
{{ range $_, $partition := . -}}
{{ $name := PartitionGetter $partition.ID -}}
// {{ $name }} returns the Resolver for {{ $partition.Name }}.
func {{ $name }}() Partition {
return {{ PartitionVarName $partition.ID }}.Partition()
}
var {{ PartitionVarName $partition.ID }} = {{ template "gocode Partition" $partition }}
{{ end }}
{{ end }}
{{ define "default partitions" }}
func DefaultPartitions() []Partition {
return []partition{
{{ range $_, $partition := . -}}
// {{ ToSymbol $partition.ID}}Partition(),
{{ end }}
}
}
{{ end }}
{{ define "gocode Partition" -}}
partition{
{{ StringIfSet "ID: %q,\n" .ID -}}
{{ StringIfSet "Name: %q,\n" .Name -}}
{{ StringIfSet "DNSSuffix: %q,\n" .DNSSuffix -}}
RegionRegex: {{ template "gocode RegionRegex" .RegionRegex }},
{{ if (gt (len .Defaults) 0) -}}
Defaults: {{ template "gocode Defaults" .Defaults -}},
{{ end -}}
Regions: {{ template "gocode Regions" .Regions }},
Services: {{ template "gocode Services" .Services }},
}
{{- end }}
{{ define "gocode RegionRegex" -}}
regionRegex{
Regexp: func() *regexp.Regexp{
reg, _ := regexp.Compile({{ QuoteString .Regexp.String }})
return reg
}(),
}
{{- end }}
{{ define "gocode Regions" -}}
regions{
{{ range $id, $region := . -}}
"{{ $id }}": {{ template "gocode Region" $region }},
{{ end -}}
}
{{- end }}
{{ define "gocode Region" -}}
region{
{{ StringIfSet "Description: %q,\n" .Description -}}
}
{{- end }}
{{ define "gocode Services" -}}
services{
{{ range $id, $service := . -}}
"{{ $id }}": {{ template "gocode Service" $service }},
{{ end }}
}
{{- end }}
{{ define "gocode Service" -}}
service{
{{ StringIfSet "PartitionEndpoint: %q,\n" .PartitionEndpoint -}}
{{ BoxedBoolIfSet "IsRegionalized: %s,\n" .IsRegionalized -}}
{{ if (gt (len .Defaults) 0) -}}
Defaults: {{ template "gocode Defaults" .Defaults -}},
{{ end -}}
{{ if .Endpoints -}}
Endpoints: {{ template "gocode Endpoints" .Endpoints }},
{{- end }}
}
{{- end }}
{{ define "gocode Defaults" -}}
endpointDefaults{
{{ range $id, $endpoint := . -}}
{{ DefaultKeySetter $id }}: {{ template "gocode Endpoint" $endpoint }},
{{ end }}
}
{{- end }}
{{ define "gocode Endpoints" -}}
serviceEndpoints{
{{ range $id, $endpoint := . -}}
{{ EndpointKeySetter $id }}: {{ template "gocode Endpoint" $endpoint }},
{{ end }}
}
{{- end }}
{{ define "gocode Endpoint" -}}
endpoint{
{{ StringIfSet "Hostname: %q,\n" .Hostname -}}
{{ StringIfSet "DNSSuffix: %q,\n" .DNSSuffix -}}
{{ StringIfSet "SSLCommonName: %q,\n" .SSLCommonName -}}
{{ StringSliceIfSet "Protocols: []string{%s},\n" .Protocols -}}
{{ StringSliceIfSet "SignatureVersions: []string{%s},\n" .SignatureVersions -}}
{{ if or .CredentialScope.Region .CredentialScope.Service -}}
CredentialScope: credentialScope{
{{ StringIfSet "Region: %q,\n" .CredentialScope.Region -}}
{{ StringIfSet "Service: %q,\n" .CredentialScope.Service -}}
},
{{- end }}
{{ BoxedBoolIfSet "Deprecated: %s,\n" .Deprecated -}}
}
{{- end }}
`

13
vendor/github.com/aws/aws-sdk-go/aws/errors.go generated vendored Normal file
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@ -0,0 +1,13 @@
package aws
import "github.com/aws/aws-sdk-go/aws/awserr"
var (
// ErrMissingRegion is an error that is returned if region configuration is
// not found.
ErrMissingRegion = awserr.New("MissingRegion", "could not find region configuration", nil)
// ErrMissingEndpoint is an error that is returned if an endpoint cannot be
// resolved for a service.
ErrMissingEndpoint = awserr.New("MissingEndpoint", "'Endpoint' configuration is required for this service", nil)
)

12
vendor/github.com/aws/aws-sdk-go/aws/jsonvalue.go generated vendored Normal file
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@ -0,0 +1,12 @@
package aws
// JSONValue is a representation of a grab bag type that will be marshaled
// into a json string. This type can be used just like any other map.
//
// Example:
//
// values := aws.JSONValue{
// "Foo": "Bar",
// }
// values["Baz"] = "Qux"
type JSONValue map[string]interface{}

121
vendor/github.com/aws/aws-sdk-go/aws/logger.go generated vendored Normal file
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@ -0,0 +1,121 @@
package aws
import (
"log"
"os"
)
// A LogLevelType defines the level logging should be performed at. Used to instruct
// the SDK which statements should be logged.
type LogLevelType uint
// LogLevel returns the pointer to a LogLevel. Should be used to workaround
// not being able to take the address of a non-composite literal.
func LogLevel(l LogLevelType) *LogLevelType {
return &l
}
// Value returns the LogLevel value or the default value LogOff if the LogLevel
// is nil. Safe to use on nil value LogLevelTypes.
func (l *LogLevelType) Value() LogLevelType {
if l != nil {
return *l
}
return LogOff
}
// Matches returns true if the v LogLevel is enabled by this LogLevel. Should be
// used with logging sub levels. Is safe to use on nil value LogLevelTypes. If
// LogLevel is nil, will default to LogOff comparison.
func (l *LogLevelType) Matches(v LogLevelType) bool {
c := l.Value()
return c&v == v
}
// AtLeast returns true if this LogLevel is at least high enough to satisfies v.
// Is safe to use on nil value LogLevelTypes. If LogLevel is nil, will default
// to LogOff comparison.
func (l *LogLevelType) AtLeast(v LogLevelType) bool {
c := l.Value()
return c >= v
}
const (
// LogOff states that no logging should be performed by the SDK. This is the
// default state of the SDK, and should be use to disable all logging.
LogOff LogLevelType = iota * 0x1000
// LogDebug state that debug output should be logged by the SDK. This should
// be used to inspect request made and responses received.
LogDebug
)
// Debug Logging Sub Levels
const (
// LogDebugWithSigning states that the SDK should log request signing and
// presigning events. This should be used to log the signing details of
// requests for debugging. Will also enable LogDebug.
LogDebugWithSigning LogLevelType = LogDebug | (1 << iota)
// LogDebugWithHTTPBody states the SDK should log HTTP request and response
// HTTP bodys in addition to the headers and path. This should be used to
// see the body content of requests and responses made while using the SDK
// Will also enable LogDebug.
LogDebugWithHTTPBody
// LogDebugWithRequestRetries states the SDK should log when service requests will
// be retried. This should be used to log when you want to log when service
// requests are being retried. Will also enable LogDebug.
LogDebugWithRequestRetries
// LogDebugWithRequestErrors states the SDK should log when service requests fail
// to build, send, validate, or unmarshal.
LogDebugWithRequestErrors
// LogDebugWithEventStreamBody states the SDK should log EventStream
// request and response bodys. This should be used to log the EventStream
// wire unmarshaled message content of requests and responses made while
// using the SDK Will also enable LogDebug.
LogDebugWithEventStreamBody
// LogDebugWithDeprecated states the SDK should log details about deprecated functionality.
LogDebugWithDeprecated
)
// A Logger is a minimalistic interface for the SDK to log messages to. Should
// be used to provide custom logging writers for the SDK to use.
type Logger interface {
Log(...interface{})
}
// A LoggerFunc is a convenience type to convert a function taking a variadic
// list of arguments and wrap it so the Logger interface can be used.
//
// Example:
// s3.New(sess, &aws.Config{Logger: aws.LoggerFunc(func(args ...interface{}) {
// fmt.Fprintln(os.Stdout, args...)
// })})
type LoggerFunc func(...interface{})
// Log calls the wrapped function with the arguments provided
func (f LoggerFunc) Log(args ...interface{}) {
f(args...)
}
// NewDefaultLogger returns a Logger which will write log messages to stdout, and
// use same formatting runes as the stdlib log.Logger
func NewDefaultLogger() Logger {
return &defaultLogger{
logger: log.New(os.Stdout, "", log.LstdFlags),
}
}
// A defaultLogger provides a minimalistic logger satisfying the Logger interface.
type defaultLogger struct {
logger *log.Logger
}
// Log logs the parameters to the stdlib logger. See log.Println.
func (l defaultLogger) Log(args ...interface{}) {
l.logger.Println(args...)
}

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vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error.go generated vendored Normal file
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package request
import (
"strings"
)
func isErrConnectionReset(err error) bool {
if strings.Contains(err.Error(), "read: connection reset") {
return false
}
if strings.Contains(err.Error(), "use of closed network connection") ||
strings.Contains(err.Error(), "connection reset") ||
strings.Contains(err.Error(), "broken pipe") {
return true
}
return false
}

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vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go generated vendored Normal file
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package request
import (
"fmt"
"strings"
)
// A Handlers provides a collection of request handlers for various
// stages of handling requests.
type Handlers struct {
Validate HandlerList
Build HandlerList
BuildStream HandlerList
Sign HandlerList
Send HandlerList
ValidateResponse HandlerList
Unmarshal HandlerList
UnmarshalStream HandlerList
UnmarshalMeta HandlerList
UnmarshalError HandlerList
Retry HandlerList
AfterRetry HandlerList
CompleteAttempt HandlerList
Complete HandlerList
}
// Copy returns a copy of this handler's lists.
func (h *Handlers) Copy() Handlers {
return Handlers{
Validate: h.Validate.copy(),
Build: h.Build.copy(),
BuildStream: h.BuildStream.copy(),
Sign: h.Sign.copy(),
Send: h.Send.copy(),
ValidateResponse: h.ValidateResponse.copy(),
Unmarshal: h.Unmarshal.copy(),
UnmarshalStream: h.UnmarshalStream.copy(),
UnmarshalError: h.UnmarshalError.copy(),
UnmarshalMeta: h.UnmarshalMeta.copy(),
Retry: h.Retry.copy(),
AfterRetry: h.AfterRetry.copy(),
CompleteAttempt: h.CompleteAttempt.copy(),
Complete: h.Complete.copy(),
}
}
// Clear removes callback functions for all handlers.
func (h *Handlers) Clear() {
h.Validate.Clear()
h.Build.Clear()
h.BuildStream.Clear()
h.Send.Clear()
h.Sign.Clear()
h.Unmarshal.Clear()
h.UnmarshalStream.Clear()
h.UnmarshalMeta.Clear()
h.UnmarshalError.Clear()
h.ValidateResponse.Clear()
h.Retry.Clear()
h.AfterRetry.Clear()
h.CompleteAttempt.Clear()
h.Complete.Clear()
}
// IsEmpty returns if there are no handlers in any of the handlerlists.
func (h *Handlers) IsEmpty() bool {
if h.Validate.Len() != 0 {
return false
}
if h.Build.Len() != 0 {
return false
}
if h.BuildStream.Len() != 0 {
return false
}
if h.Send.Len() != 0 {
return false
}
if h.Sign.Len() != 0 {
return false
}
if h.Unmarshal.Len() != 0 {
return false
}
if h.UnmarshalStream.Len() != 0 {
return false
}
if h.UnmarshalMeta.Len() != 0 {
return false
}
if h.UnmarshalError.Len() != 0 {
return false
}
if h.ValidateResponse.Len() != 0 {
return false
}
if h.Retry.Len() != 0 {
return false
}
if h.AfterRetry.Len() != 0 {
return false
}
if h.CompleteAttempt.Len() != 0 {
return false
}
if h.Complete.Len() != 0 {
return false
}
return true
}
// A HandlerListRunItem represents an entry in the HandlerList which
// is being run.
type HandlerListRunItem struct {
Index int
Handler NamedHandler
Request *Request
}
// A HandlerList manages zero or more handlers in a list.
type HandlerList struct {
list []NamedHandler
// Called after each request handler in the list is called. If set
// and the func returns true the HandlerList will continue to iterate
// over the request handlers. If false is returned the HandlerList
// will stop iterating.
//
// Should be used if extra logic to be performed between each handler
// in the list. This can be used to terminate a list's iteration
// based on a condition such as error like, HandlerListStopOnError.
// Or for logging like HandlerListLogItem.
AfterEachFn func(item HandlerListRunItem) bool
}
// A NamedHandler is a struct that contains a name and function callback.
type NamedHandler struct {
Name string
Fn func(*Request)
}
// copy creates a copy of the handler list.
func (l *HandlerList) copy() HandlerList {
n := HandlerList{
AfterEachFn: l.AfterEachFn,
}
if len(l.list) == 0 {
return n
}
n.list = append(make([]NamedHandler, 0, len(l.list)), l.list...)
return n
}
// Clear clears the handler list.
func (l *HandlerList) Clear() {
l.list = l.list[0:0]
}
// Len returns the number of handlers in the list.
func (l *HandlerList) Len() int {
return len(l.list)
}
// PushBack pushes handler f to the back of the handler list.
func (l *HandlerList) PushBack(f func(*Request)) {
l.PushBackNamed(NamedHandler{"__anonymous", f})
}
// PushBackNamed pushes named handler f to the back of the handler list.
func (l *HandlerList) PushBackNamed(n NamedHandler) {
if cap(l.list) == 0 {
l.list = make([]NamedHandler, 0, 5)
}
l.list = append(l.list, n)
}
// PushFront pushes handler f to the front of the handler list.
func (l *HandlerList) PushFront(f func(*Request)) {
l.PushFrontNamed(NamedHandler{"__anonymous", f})
}
// PushFrontNamed pushes named handler f to the front of the handler list.
func (l *HandlerList) PushFrontNamed(n NamedHandler) {
if cap(l.list) == len(l.list) {
// Allocating new list required
l.list = append([]NamedHandler{n}, l.list...)
} else {
// Enough room to prepend into list.
l.list = append(l.list, NamedHandler{})
copy(l.list[1:], l.list)
l.list[0] = n
}
}
// Remove removes a NamedHandler n
func (l *HandlerList) Remove(n NamedHandler) {
l.RemoveByName(n.Name)
}
// RemoveByName removes a NamedHandler by name.
func (l *HandlerList) RemoveByName(name string) {
for i := 0; i < len(l.list); i++ {
m := l.list[i]
if m.Name == name {
// Shift array preventing creating new arrays
copy(l.list[i:], l.list[i+1:])
l.list[len(l.list)-1] = NamedHandler{}
l.list = l.list[:len(l.list)-1]
// decrement list so next check to length is correct
i--
}
}
}
// SwapNamed will swap out any existing handlers with the same name as the
// passed in NamedHandler returning true if handlers were swapped. False is
// returned otherwise.
func (l *HandlerList) SwapNamed(n NamedHandler) (swapped bool) {
for i := 0; i < len(l.list); i++ {
if l.list[i].Name == n.Name {
l.list[i].Fn = n.Fn
swapped = true
}
}
return swapped
}
// Swap will swap out all handlers matching the name passed in. The matched
// handlers will be swapped in. True is returned if the handlers were swapped.
func (l *HandlerList) Swap(name string, replace NamedHandler) bool {
var swapped bool
for i := 0; i < len(l.list); i++ {
if l.list[i].Name == name {
l.list[i] = replace
swapped = true
}
}
return swapped
}
// SetBackNamed will replace the named handler if it exists in the handler list.
// If the handler does not exist the handler will be added to the end of the list.
func (l *HandlerList) SetBackNamed(n NamedHandler) {
if !l.SwapNamed(n) {
l.PushBackNamed(n)
}
}
// SetFrontNamed will replace the named handler if it exists in the handler list.
// If the handler does not exist the handler will be added to the beginning of
// the list.
func (l *HandlerList) SetFrontNamed(n NamedHandler) {
if !l.SwapNamed(n) {
l.PushFrontNamed(n)
}
}
// Run executes all handlers in the list with a given request object.
func (l *HandlerList) Run(r *Request) {
for i, h := range l.list {
h.Fn(r)
item := HandlerListRunItem{
Index: i, Handler: h, Request: r,
}
if l.AfterEachFn != nil && !l.AfterEachFn(item) {
return
}
}
}
// HandlerListLogItem logs the request handler and the state of the
// request's Error value. Always returns true to continue iterating
// request handlers in a HandlerList.
func HandlerListLogItem(item HandlerListRunItem) bool {
if item.Request.Config.Logger == nil {
return true
}
item.Request.Config.Logger.Log("DEBUG: RequestHandler",
item.Index, item.Handler.Name, item.Request.Error)
return true
}
// HandlerListStopOnError returns false to stop the HandlerList iterating
// over request handlers if Request.Error is not nil. True otherwise
// to continue iterating.
func HandlerListStopOnError(item HandlerListRunItem) bool {
return item.Request.Error == nil
}
// WithAppendUserAgent will add a string to the user agent prefixed with a
// single white space.
func WithAppendUserAgent(s string) Option {
return func(r *Request) {
r.Handlers.Build.PushBack(func(r2 *Request) {
AddToUserAgent(r, s)
})
}
}
// MakeAddToUserAgentHandler will add the name/version pair to the User-Agent request
// header. If the extra parameters are provided they will be added as metadata to the
// name/version pair resulting in the following format.
// "name/version (extra0; extra1; ...)"
// The user agent part will be concatenated with this current request's user agent string.
func MakeAddToUserAgentHandler(name, version string, extra ...string) func(*Request) {
ua := fmt.Sprintf("%s/%s", name, version)
if len(extra) > 0 {
ua += fmt.Sprintf(" (%s)", strings.Join(extra, "; "))
}
return func(r *Request) {
AddToUserAgent(r, ua)
}
}
// MakeAddToUserAgentFreeFormHandler adds the input to the User-Agent request header.
// The input string will be concatenated with the current request's user agent string.
func MakeAddToUserAgentFreeFormHandler(s string) func(*Request) {
return func(r *Request) {
AddToUserAgent(r, s)
}
}
// WithSetRequestHeaders updates the operation request's HTTP header to contain
// the header key value pairs provided. If the header key already exists in the
// request's HTTP header set, the existing value(s) will be replaced.
//
// Header keys added will be added as canonical format with title casing
// applied via http.Header.Set method.
func WithSetRequestHeaders(h map[string]string) Option {
return withRequestHeader(h).SetRequestHeaders
}
type withRequestHeader map[string]string
func (h withRequestHeader) SetRequestHeaders(r *Request) {
for k, v := range h {
r.HTTPRequest.Header.Set(k, v)
}
}

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vendor/github.com/aws/aws-sdk-go/aws/request/http_request.go generated vendored Normal file
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package request
import (
"io"
"net/http"
"net/url"
)
func copyHTTPRequest(r *http.Request, body io.ReadCloser) *http.Request {
req := new(http.Request)
*req = *r
req.URL = &url.URL{}
*req.URL = *r.URL
req.Body = body
req.Header = http.Header{}
for k, v := range r.Header {
for _, vv := range v {
req.Header.Add(k, vv)
}
}
return req
}

65
vendor/github.com/aws/aws-sdk-go/aws/request/offset_reader.go generated vendored Normal file
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package request
import (
"io"
"sync"
"github.com/aws/aws-sdk-go/internal/sdkio"
)
// offsetReader is a thread-safe io.ReadCloser to prevent racing
// with retrying requests
type offsetReader struct {
buf io.ReadSeeker
lock sync.Mutex
closed bool
}
func newOffsetReader(buf io.ReadSeeker, offset int64) (*offsetReader, error) {
reader := &offsetReader{}
_, err := buf.Seek(offset, sdkio.SeekStart)
if err != nil {
return nil, err
}
reader.buf = buf
return reader, nil
}
// Close will close the instance of the offset reader's access to
// the underlying io.ReadSeeker.
func (o *offsetReader) Close() error {
o.lock.Lock()
defer o.lock.Unlock()
o.closed = true
return nil
}
// Read is a thread-safe read of the underlying io.ReadSeeker
func (o *offsetReader) Read(p []byte) (int, error) {
o.lock.Lock()
defer o.lock.Unlock()
if o.closed {
return 0, io.EOF
}
return o.buf.Read(p)
}
// Seek is a thread-safe seeking operation.
func (o *offsetReader) Seek(offset int64, whence int) (int64, error) {
o.lock.Lock()
defer o.lock.Unlock()
return o.buf.Seek(offset, whence)
}
// CloseAndCopy will return a new offsetReader with a copy of the old buffer
// and close the old buffer.
func (o *offsetReader) CloseAndCopy(offset int64) (*offsetReader, error) {
if err := o.Close(); err != nil {
return nil, err
}
return newOffsetReader(o.buf, offset)
}

722
vendor/github.com/aws/aws-sdk-go/aws/request/request.go generated vendored Normal file
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package request
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"reflect"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client/metadata"
"github.com/aws/aws-sdk-go/internal/sdkio"
)
const (
// ErrCodeSerialization is the serialization error code that is received
// during protocol unmarshaling.
ErrCodeSerialization = "SerializationError"
// ErrCodeRead is an error that is returned during HTTP reads.
ErrCodeRead = "ReadError"
// ErrCodeResponseTimeout is the connection timeout error that is received
// during body reads.
ErrCodeResponseTimeout = "ResponseTimeout"
// ErrCodeInvalidPresignExpire is returned when the expire time provided to
// presign is invalid
ErrCodeInvalidPresignExpire = "InvalidPresignExpireError"
// CanceledErrorCode is the error code that will be returned by an
// API request that was canceled. Requests given a aws.Context may
// return this error when canceled.
CanceledErrorCode = "RequestCanceled"
// ErrCodeRequestError is an error preventing the SDK from continuing to
// process the request.
ErrCodeRequestError = "RequestError"
)
// A Request is the service request to be made.
type Request struct {
Config aws.Config
ClientInfo metadata.ClientInfo
Handlers Handlers
Retryer
AttemptTime time.Time
Time time.Time
Operation *Operation
HTTPRequest *http.Request
HTTPResponse *http.Response
Body io.ReadSeeker
streamingBody io.ReadCloser
BodyStart int64 // offset from beginning of Body that the request body starts
Params interface{}
Error error
Data interface{}
RequestID string
RetryCount int
Retryable *bool
RetryDelay time.Duration
NotHoist bool
SignedHeaderVals http.Header
LastSignedAt time.Time
DisableFollowRedirects bool
// Additional API error codes that should be retried. IsErrorRetryable
// will consider these codes in addition to its built in cases.
RetryErrorCodes []string
// Additional API error codes that should be retried with throttle backoff
// delay. IsErrorThrottle will consider these codes in addition to its
// built in cases.
ThrottleErrorCodes []string
// A value greater than 0 instructs the request to be signed as Presigned URL
// You should not set this field directly. Instead use Request's
// Presign or PresignRequest methods.
ExpireTime time.Duration
context aws.Context
built bool
// Need to persist an intermediate body between the input Body and HTTP
// request body because the HTTP Client's transport can maintain a reference
// to the HTTP request's body after the client has returned. This value is
// safe to use concurrently and wrap the input Body for each HTTP request.
safeBody *offsetReader
}
// An Operation is the service API operation to be made.
type Operation struct {
Name string
HTTPMethod string
HTTPPath string
*Paginator
BeforePresignFn func(r *Request) error
}
// New returns a new Request pointer for the service API operation and
// parameters.
//
// A Retryer should be provided to direct how the request is retried. If
// Retryer is nil, a default no retry value will be used. You can use
// NoOpRetryer in the Client package to disable retry behavior directly.
//
// Params is any value of input parameters to be the request payload.
// Data is pointer value to an object which the request's response
// payload will be deserialized to.
func New(cfg aws.Config, clientInfo metadata.ClientInfo, handlers Handlers,
retryer Retryer, operation *Operation, params interface{}, data interface{}) *Request {
if retryer == nil {
retryer = noOpRetryer{}
}
method := operation.HTTPMethod
if method == "" {
method = "POST"
}
httpReq, _ := http.NewRequest(method, "", nil)
var err error
httpReq.URL, err = url.Parse(clientInfo.Endpoint)
if err != nil {
httpReq.URL = &url.URL{}
err = awserr.New("InvalidEndpointURL", "invalid endpoint uri", err)
}
if len(operation.HTTPPath) != 0 {
opHTTPPath := operation.HTTPPath
var opQueryString string
if idx := strings.Index(opHTTPPath, "?"); idx >= 0 {
opQueryString = opHTTPPath[idx+1:]
opHTTPPath = opHTTPPath[:idx]
}
if strings.HasSuffix(httpReq.URL.Path, "/") && strings.HasPrefix(opHTTPPath, "/") {
opHTTPPath = opHTTPPath[1:]
}
httpReq.URL.Path += opHTTPPath
httpReq.URL.RawQuery = opQueryString
}
r := &Request{
Config: cfg,
ClientInfo: clientInfo,
Handlers: handlers.Copy(),
Retryer: retryer,
Time: time.Now(),
ExpireTime: 0,
Operation: operation,
HTTPRequest: httpReq,
Body: nil,
Params: params,
Error: err,
Data: data,
}
r.SetBufferBody([]byte{})
return r
}
// A Option is a functional option that can augment or modify a request when
// using a WithContext API operation method.
type Option func(*Request)
// WithGetResponseHeader builds a request Option which will retrieve a single
// header value from the HTTP Response. If there are multiple values for the
// header key use WithGetResponseHeaders instead to access the http.Header
// map directly. The passed in val pointer must be non-nil.
//
// This Option can be used multiple times with a single API operation.
//
// var id2, versionID string
// svc.PutObjectWithContext(ctx, params,
// request.WithGetResponseHeader("x-amz-id-2", &id2),
// request.WithGetResponseHeader("x-amz-version-id", &versionID),
// )
func WithGetResponseHeader(key string, val *string) Option {
return func(r *Request) {
r.Handlers.Complete.PushBack(func(req *Request) {
*val = req.HTTPResponse.Header.Get(key)
})
}
}
// WithGetResponseHeaders builds a request Option which will retrieve the
// headers from the HTTP response and assign them to the passed in headers
// variable. The passed in headers pointer must be non-nil.
//
// var headers http.Header
// svc.PutObjectWithContext(ctx, params, request.WithGetResponseHeaders(&headers))
func WithGetResponseHeaders(headers *http.Header) Option {
return func(r *Request) {
r.Handlers.Complete.PushBack(func(req *Request) {
*headers = req.HTTPResponse.Header
})
}
}
// WithLogLevel is a request option that will set the request to use a specific
// log level when the request is made.
//
// svc.PutObjectWithContext(ctx, params, request.WithLogLevel(aws.LogDebugWithHTTPBody)
func WithLogLevel(l aws.LogLevelType) Option {
return func(r *Request) {
r.Config.LogLevel = aws.LogLevel(l)
}
}
// ApplyOptions will apply each option to the request calling them in the order
// the were provided.
func (r *Request) ApplyOptions(opts ...Option) {
for _, opt := range opts {
opt(r)
}
}
// Context will always returns a non-nil context. If Request does not have a
// context aws.BackgroundContext will be returned.
func (r *Request) Context() aws.Context {
if r.context != nil {
return r.context
}
return aws.BackgroundContext()
}
// SetContext adds a Context to the current request that can be used to cancel
// a in-flight request. The Context value must not be nil, or this method will
// panic.
//
// Unlike http.Request.WithContext, SetContext does not return a copy of the
// Request. It is not safe to use use a single Request value for multiple
// requests. A new Request should be created for each API operation request.
//
// Go 1.6 and below:
// The http.Request's Cancel field will be set to the Done() value of
// the context. This will overwrite the Cancel field's value.
//
// Go 1.7 and above:
// The http.Request.WithContext will be used to set the context on the underlying
// http.Request. This will create a shallow copy of the http.Request. The SDK
// may create sub contexts in the future for nested requests such as retries.
func (r *Request) SetContext(ctx aws.Context) {
if ctx == nil {
panic("context cannot be nil")
}
setRequestContext(r, ctx)
}
// WillRetry returns if the request's can be retried.
func (r *Request) WillRetry() bool {
if !aws.IsReaderSeekable(r.Body) && r.HTTPRequest.Body != NoBody {
return false
}
return r.Error != nil && aws.BoolValue(r.Retryable) && r.RetryCount < r.MaxRetries()
}
func fmtAttemptCount(retryCount, maxRetries int) string {
return fmt.Sprintf("attempt %v/%v", retryCount, maxRetries)
}
// ParamsFilled returns if the request's parameters have been populated
// and the parameters are valid. False is returned if no parameters are
// provided or invalid.
func (r *Request) ParamsFilled() bool {
return r.Params != nil && reflect.ValueOf(r.Params).Elem().IsValid()
}
// DataFilled returns true if the request's data for response deserialization
// target has been set and is a valid. False is returned if data is not
// set, or is invalid.
func (r *Request) DataFilled() bool {
return r.Data != nil && reflect.ValueOf(r.Data).Elem().IsValid()
}
// SetBufferBody will set the request's body bytes that will be sent to
// the service API.
func (r *Request) SetBufferBody(buf []byte) {
r.SetReaderBody(bytes.NewReader(buf))
}
// SetStringBody sets the body of the request to be backed by a string.
func (r *Request) SetStringBody(s string) {
r.SetReaderBody(strings.NewReader(s))
}
// SetReaderBody will set the request's body reader.
func (r *Request) SetReaderBody(reader io.ReadSeeker) {
r.Body = reader
if aws.IsReaderSeekable(reader) {
var err error
// Get the Bodies current offset so retries will start from the same
// initial position.
r.BodyStart, err = reader.Seek(0, sdkio.SeekCurrent)
if err != nil {
r.Error = awserr.New(ErrCodeSerialization,
"failed to determine start of request body", err)
return
}
}
r.ResetBody()
}
// SetStreamingBody set the reader to be used for the request that will stream
// bytes to the server. Request's Body must not be set to any reader.
func (r *Request) SetStreamingBody(reader io.ReadCloser) {
r.streamingBody = reader
r.SetReaderBody(aws.ReadSeekCloser(reader))
}
// Presign returns the request's signed URL. Error will be returned
// if the signing fails. The expire parameter is only used for presigned Amazon
// S3 API requests. All other AWS services will use a fixed expiration
// time of 15 minutes.
//
// It is invalid to create a presigned URL with a expire duration 0 or less. An
// error is returned if expire duration is 0 or less.
func (r *Request) Presign(expire time.Duration) (string, error) {
r = r.copy()
// Presign requires all headers be hoisted. There is no way to retrieve
// the signed headers not hoisted without this. Making the presigned URL
// useless.
r.NotHoist = false
u, _, err := getPresignedURL(r, expire)
return u, err
}
// PresignRequest behaves just like presign, with the addition of returning a
// set of headers that were signed. The expire parameter is only used for
// presigned Amazon S3 API requests. All other AWS services will use a fixed
// expiration time of 15 minutes.
//
// It is invalid to create a presigned URL with a expire duration 0 or less. An
// error is returned if expire duration is 0 or less.
//
// Returns the URL string for the API operation with signature in the query string,
// and the HTTP headers that were included in the signature. These headers must
// be included in any HTTP request made with the presigned URL.
//
// To prevent hoisting any headers to the query string set NotHoist to true on
// this Request value prior to calling PresignRequest.
func (r *Request) PresignRequest(expire time.Duration) (string, http.Header, error) {
r = r.copy()
return getPresignedURL(r, expire)
}
// IsPresigned returns true if the request represents a presigned API url.
func (r *Request) IsPresigned() bool {
return r.ExpireTime != 0
}
func getPresignedURL(r *Request, expire time.Duration) (string, http.Header, error) {
if expire <= 0 {
return "", nil, awserr.New(
ErrCodeInvalidPresignExpire,
"presigned URL requires an expire duration greater than 0",
nil,
)
}
r.ExpireTime = expire
if r.Operation.BeforePresignFn != nil {
if err := r.Operation.BeforePresignFn(r); err != nil {
return "", nil, err
}
}
if err := r.Sign(); err != nil {
return "", nil, err
}
return r.HTTPRequest.URL.String(), r.SignedHeaderVals, nil
}
const (
notRetrying = "not retrying"
)
func debugLogReqError(r *Request, stage, retryStr string, err error) {
if !r.Config.LogLevel.Matches(aws.LogDebugWithRequestErrors) {
return
}
r.Config.Logger.Log(fmt.Sprintf("DEBUG: %s %s/%s failed, %s, error %v",
stage, r.ClientInfo.ServiceName, r.Operation.Name, retryStr, err))
}
// Build will build the request's object so it can be signed and sent
// to the service. Build will also validate all the request's parameters.
// Any additional build Handlers set on this request will be run
// in the order they were set.
//
// The request will only be built once. Multiple calls to build will have
// no effect.
//
// If any Validate or Build errors occur the build will stop and the error
// which occurred will be returned.
func (r *Request) Build() error {
if !r.built {
r.Handlers.Validate.Run(r)
if r.Error != nil {
debugLogReqError(r, "Validate Request", notRetrying, r.Error)
return r.Error
}
r.Handlers.Build.Run(r)
if r.Error != nil {
debugLogReqError(r, "Build Request", notRetrying, r.Error)
return r.Error
}
r.built = true
}
return r.Error
}
// Sign will sign the request, returning error if errors are encountered.
//
// Sign will build the request prior to signing. All Sign Handlers will
// be executed in the order they were set.
func (r *Request) Sign() error {
r.Build()
if r.Error != nil {
debugLogReqError(r, "Build Request", notRetrying, r.Error)
return r.Error
}
SanitizeHostForHeader(r.HTTPRequest)
r.Handlers.Sign.Run(r)
return r.Error
}
func (r *Request) getNextRequestBody() (body io.ReadCloser, err error) {
if r.streamingBody != nil {
return r.streamingBody, nil
}
if r.safeBody != nil {
r.safeBody.Close()
}
r.safeBody, err = newOffsetReader(r.Body, r.BodyStart)
if err != nil {
return nil, awserr.New(ErrCodeSerialization,
"failed to get next request body reader", err)
}
// Go 1.8 tightened and clarified the rules code needs to use when building
// requests with the http package. Go 1.8 removed the automatic detection
// of if the Request.Body was empty, or actually had bytes in it. The SDK
// always sets the Request.Body even if it is empty and should not actually
// be sent. This is incorrect.
//
// Go 1.8 did add a http.NoBody value that the SDK can use to tell the http
// client that the request really should be sent without a body. The
// Request.Body cannot be set to nil, which is preferable, because the
// field is exported and could introduce nil pointer dereferences for users
// of the SDK if they used that field.
//
// Related golang/go#18257
l, err := aws.SeekerLen(r.Body)
if err != nil {
return nil, awserr.New(ErrCodeSerialization,
"failed to compute request body size", err)
}
if l == 0 {
body = NoBody
} else if l > 0 {
body = r.safeBody
} else {
// Hack to prevent sending bodies for methods where the body
// should be ignored by the server. Sending bodies on these
// methods without an associated ContentLength will cause the
// request to socket timeout because the server does not handle
// Transfer-Encoding: chunked bodies for these methods.
//
// This would only happen if a aws.ReaderSeekerCloser was used with
// a io.Reader that was not also an io.Seeker, or did not implement
// Len() method.
switch r.Operation.HTTPMethod {
case "GET", "HEAD", "DELETE":
body = NoBody
default:
body = r.safeBody
}
}
return body, nil
}
// GetBody will return an io.ReadSeeker of the Request's underlying
// input body with a concurrency safe wrapper.
func (r *Request) GetBody() io.ReadSeeker {
return r.safeBody
}
// Send will send the request, returning error if errors are encountered.
//
// Send will sign the request prior to sending. All Send Handlers will
// be executed in the order they were set.
//
// Canceling a request is non-deterministic. If a request has been canceled,
// then the transport will choose, randomly, one of the state channels during
// reads or getting the connection.
//
// readLoop() and getConn(req *Request, cm connectMethod)
// https://github.com/golang/go/blob/master/src/net/http/transport.go
//
// Send will not close the request.Request's body.
func (r *Request) Send() error {
defer func() {
// Ensure a non-nil HTTPResponse parameter is set to ensure handlers
// checking for HTTPResponse values, don't fail.
if r.HTTPResponse == nil {
r.HTTPResponse = &http.Response{
Header: http.Header{},
Body: ioutil.NopCloser(&bytes.Buffer{}),
}
}
// Regardless of success or failure of the request trigger the Complete
// request handlers.
r.Handlers.Complete.Run(r)
}()
if err := r.Error; err != nil {
return err
}
for {
r.Error = nil
r.AttemptTime = time.Now()
if err := r.Sign(); err != nil {
debugLogReqError(r, "Sign Request", notRetrying, err)
return err
}
if err := r.sendRequest(); err == nil {
return nil
}
r.Handlers.Retry.Run(r)
r.Handlers.AfterRetry.Run(r)
if r.Error != nil || !aws.BoolValue(r.Retryable) {
return r.Error
}
if err := r.prepareRetry(); err != nil {
r.Error = err
return err
}
}
}
func (r *Request) prepareRetry() error {
if r.Config.LogLevel.Matches(aws.LogDebugWithRequestRetries) {
r.Config.Logger.Log(fmt.Sprintf("DEBUG: Retrying Request %s/%s, attempt %d",
r.ClientInfo.ServiceName, r.Operation.Name, r.RetryCount))
}
// The previous http.Request will have a reference to the r.Body
// and the HTTP Client's Transport may still be reading from
// the request's body even though the Client's Do returned.
r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, nil)
r.ResetBody()
if err := r.Error; err != nil {
return awserr.New(ErrCodeSerialization,
"failed to prepare body for retry", err)
}
// Closing response body to ensure that no response body is leaked
// between retry attempts.
if r.HTTPResponse != nil && r.HTTPResponse.Body != nil {
r.HTTPResponse.Body.Close()
}
return nil
}
func (r *Request) sendRequest() (sendErr error) {
defer r.Handlers.CompleteAttempt.Run(r)
r.Retryable = nil
r.Handlers.Send.Run(r)
if r.Error != nil {
debugLogReqError(r, "Send Request",
fmtAttemptCount(r.RetryCount, r.MaxRetries()),
r.Error)
return r.Error
}
r.Handlers.UnmarshalMeta.Run(r)
r.Handlers.ValidateResponse.Run(r)
if r.Error != nil {
r.Handlers.UnmarshalError.Run(r)
debugLogReqError(r, "Validate Response",
fmtAttemptCount(r.RetryCount, r.MaxRetries()),
r.Error)
return r.Error
}
r.Handlers.Unmarshal.Run(r)
if r.Error != nil {
debugLogReqError(r, "Unmarshal Response",
fmtAttemptCount(r.RetryCount, r.MaxRetries()),
r.Error)
return r.Error
}
return nil
}
// copy will copy a request which will allow for local manipulation of the
// request.
func (r *Request) copy() *Request {
req := &Request{}
*req = *r
req.Handlers = r.Handlers.Copy()
op := *r.Operation
req.Operation = &op
return req
}
// AddToUserAgent adds the string to the end of the request's current user agent.
func AddToUserAgent(r *Request, s string) {
curUA := r.HTTPRequest.Header.Get("User-Agent")
if len(curUA) > 0 {
s = curUA + " " + s
}
r.HTTPRequest.Header.Set("User-Agent", s)
}
// SanitizeHostForHeader removes default port from host and updates request.Host
func SanitizeHostForHeader(r *http.Request) {
host := getHost(r)
port := portOnly(host)
if port != "" && isDefaultPort(r.URL.Scheme, port) {
r.Host = stripPort(host)
}
}
// Returns host from request
func getHost(r *http.Request) string {
if r.Host != "" {
return r.Host
}
if r.URL == nil {
return ""
}
return r.URL.Host
}
// Hostname returns u.Host, without any port number.
//
// If Host is an IPv6 literal with a port number, Hostname returns the
// IPv6 literal without the square brackets. IPv6 literals may include
// a zone identifier.
//
// Copied from the Go 1.8 standard library (net/url)
func stripPort(hostport string) string {
colon := strings.IndexByte(hostport, ':')
if colon == -1 {
return hostport
}
if i := strings.IndexByte(hostport, ']'); i != -1 {
return strings.TrimPrefix(hostport[:i], "[")
}
return hostport[:colon]
}
// Port returns the port part of u.Host, without the leading colon.
// If u.Host doesn't contain a port, Port returns an empty string.
//
// Copied from the Go 1.8 standard library (net/url)
func portOnly(hostport string) string {
colon := strings.IndexByte(hostport, ':')
if colon == -1 {
return ""
}
if i := strings.Index(hostport, "]:"); i != -1 {
return hostport[i+len("]:"):]
}
if strings.Contains(hostport, "]") {
return ""
}
return hostport[colon+len(":"):]
}
// Returns true if the specified URI is using the standard port
// (i.e. port 80 for HTTP URIs or 443 for HTTPS URIs)
func isDefaultPort(scheme, port string) bool {
if port == "" {
return true
}
lowerCaseScheme := strings.ToLower(scheme)
if (lowerCaseScheme == "http" && port == "80") || (lowerCaseScheme == "https" && port == "443") {
return true
}
return false
}

40
vendor/github.com/aws/aws-sdk-go/aws/request/request_1_7.go generated vendored Normal file
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//go:build !go1.8
// +build !go1.8
package request
import "io"
// NoBody is an io.ReadCloser with no bytes. Read always returns EOF
// and Close always returns nil. It can be used in an outgoing client
// request to explicitly signal that a request has zero bytes.
// An alternative, however, is to simply set Request.Body to nil.
//
// Copy of Go 1.8 NoBody type from net/http/http.go
type noBody struct{}
func (noBody) Read([]byte) (int, error) { return 0, io.EOF }
func (noBody) Close() error { return nil }
func (noBody) WriteTo(io.Writer) (int64, error) { return 0, nil }
// NoBody is an empty reader that will trigger the Go HTTP client to not include
// and body in the HTTP request.
var NoBody = noBody{}
// ResetBody rewinds the request body back to its starting position, and
// sets the HTTP Request body reference. When the body is read prior
// to being sent in the HTTP request it will need to be rewound.
//
// ResetBody will automatically be called by the SDK's build handler, but if
// the request is being used directly ResetBody must be called before the request
// is Sent. SetStringBody, SetBufferBody, and SetReaderBody will automatically
// call ResetBody.
func (r *Request) ResetBody() {
body, err := r.getNextRequestBody()
if err != nil {
r.Error = err
return
}
r.HTTPRequest.Body = body
}

37
vendor/github.com/aws/aws-sdk-go/aws/request/request_1_8.go generated vendored Normal file
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//go:build go1.8
// +build go1.8
package request
import (
"net/http"
"github.com/aws/aws-sdk-go/aws/awserr"
)
// NoBody is a http.NoBody reader instructing Go HTTP client to not include
// and body in the HTTP request.
var NoBody = http.NoBody
// ResetBody rewinds the request body back to its starting position, and
// sets the HTTP Request body reference. When the body is read prior
// to being sent in the HTTP request it will need to be rewound.
//
// ResetBody will automatically be called by the SDK's build handler, but if
// the request is being used directly ResetBody must be called before the request
// is Sent. SetStringBody, SetBufferBody, and SetReaderBody will automatically
// call ResetBody.
//
// Will also set the Go 1.8's http.Request.GetBody member to allow retrying
// PUT/POST redirects.
func (r *Request) ResetBody() {
body, err := r.getNextRequestBody()
if err != nil {
r.Error = awserr.New(ErrCodeSerialization,
"failed to reset request body", err)
return
}
r.HTTPRequest.Body = body
r.HTTPRequest.GetBody = r.getNextRequestBody
}

15
vendor/github.com/aws/aws-sdk-go/aws/request/request_context.go generated vendored Normal file
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//go:build go1.7
// +build go1.7
package request
import "github.com/aws/aws-sdk-go/aws"
// setContext updates the Request to use the passed in context for cancellation.
// Context will also be used for request retry delay.
//
// Creates shallow copy of the http.Request with the WithContext method.
func setRequestContext(r *Request, ctx aws.Context) {
r.context = ctx
r.HTTPRequest = r.HTTPRequest.WithContext(ctx)
}

15
vendor/github.com/aws/aws-sdk-go/aws/request/request_context_1_6.go generated vendored Normal file
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@ -0,0 +1,15 @@
//go:build !go1.7
// +build !go1.7
package request
import "github.com/aws/aws-sdk-go/aws"
// setContext updates the Request to use the passed in context for cancellation.
// Context will also be used for request retry delay.
//
// Creates shallow copy of the http.Request with the WithContext method.
func setRequestContext(r *Request, ctx aws.Context) {
r.context = ctx
r.HTTPRequest.Cancel = ctx.Done()
}

266
vendor/github.com/aws/aws-sdk-go/aws/request/request_pagination.go generated vendored Normal file
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package request
import (
"reflect"
"sync/atomic"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awsutil"
)
// A Pagination provides paginating of SDK API operations which are paginatable.
// Generally you should not use this type directly, but use the "Pages" API
// operations method to automatically perform pagination for you. Such as,
// "S3.ListObjectsPages", and "S3.ListObjectsPagesWithContext" methods.
//
// Pagination differs from a Paginator type in that pagination is the type that
// does the pagination between API operations, and Paginator defines the
// configuration that will be used per page request.
//
// for p.Next() {
// data := p.Page().(*s3.ListObjectsOutput)
// // process the page's data
// // ...
// // break out of loop to stop fetching additional pages
// }
//
// return p.Err()
//
// See service client API operation Pages methods for examples how the SDK will
// use the Pagination type.
type Pagination struct {
// Function to return a Request value for each pagination request.
// Any configuration or handlers that need to be applied to the request
// prior to getting the next page should be done here before the request
// returned.
//
// NewRequest should always be built from the same API operations. It is
// undefined if different API operations are returned on subsequent calls.
NewRequest func() (*Request, error)
// EndPageOnSameToken, when enabled, will allow the paginator to stop on
// token that are the same as its previous tokens.
EndPageOnSameToken bool
started bool
prevTokens []interface{}
nextTokens []interface{}
err error
curPage interface{}
}
// HasNextPage will return true if Pagination is able to determine that the API
// operation has additional pages. False will be returned if there are no more
// pages remaining.
//
// Will always return true if Next has not been called yet.
func (p *Pagination) HasNextPage() bool {
if !p.started {
return true
}
hasNextPage := len(p.nextTokens) != 0
if p.EndPageOnSameToken {
return hasNextPage && !awsutil.DeepEqual(p.nextTokens, p.prevTokens)
}
return hasNextPage
}
// Err returns the error Pagination encountered when retrieving the next page.
func (p *Pagination) Err() error {
return p.err
}
// Page returns the current page. Page should only be called after a successful
// call to Next. It is undefined what Page will return if Page is called after
// Next returns false.
func (p *Pagination) Page() interface{} {
return p.curPage
}
// Next will attempt to retrieve the next page for the API operation. When a page
// is retrieved true will be returned. If the page cannot be retrieved, or there
// are no more pages false will be returned.
//
// Use the Page method to retrieve the current page data. The data will need
// to be cast to the API operation's output type.
//
// Use the Err method to determine if an error occurred if Page returns false.
func (p *Pagination) Next() bool {
if !p.HasNextPage() {
return false
}
req, err := p.NewRequest()
if err != nil {
p.err = err
return false
}
if p.started {
for i, intok := range req.Operation.InputTokens {
awsutil.SetValueAtPath(req.Params, intok, p.nextTokens[i])
}
}
p.started = true
err = req.Send()
if err != nil {
p.err = err
return false
}
p.prevTokens = p.nextTokens
p.nextTokens = req.nextPageTokens()
p.curPage = req.Data
return true
}
// A Paginator is the configuration data that defines how an API operation
// should be paginated. This type is used by the API service models to define
// the generated pagination config for service APIs.
//
// The Pagination type is what provides iterating between pages of an API. It
// is only used to store the token metadata the SDK should use for performing
// pagination.
type Paginator struct {
InputTokens []string
OutputTokens []string
LimitToken string
TruncationToken string
}
// nextPageTokens returns the tokens to use when asking for the next page of data.
func (r *Request) nextPageTokens() []interface{} {
if r.Operation.Paginator == nil {
return nil
}
if r.Operation.TruncationToken != "" {
tr, _ := awsutil.ValuesAtPath(r.Data, r.Operation.TruncationToken)
if len(tr) == 0 {
return nil
}
switch v := tr[0].(type) {
case *bool:
if !aws.BoolValue(v) {
return nil
}
case bool:
if !v {
return nil
}
}
}
tokens := []interface{}{}
tokenAdded := false
for _, outToken := range r.Operation.OutputTokens {
vs, _ := awsutil.ValuesAtPath(r.Data, outToken)
if len(vs) == 0 {
tokens = append(tokens, nil)
continue
}
v := vs[0]
switch tv := v.(type) {
case *string:
if len(aws.StringValue(tv)) == 0 {
tokens = append(tokens, nil)
continue
}
case string:
if len(tv) == 0 {
tokens = append(tokens, nil)
continue
}
}
tokenAdded = true
tokens = append(tokens, v)
}
if !tokenAdded {
return nil
}
return tokens
}
// Ensure a deprecated item is only logged once instead of each time its used.
func logDeprecatedf(logger aws.Logger, flag *int32, msg string) {
if logger == nil {
return
}
if atomic.CompareAndSwapInt32(flag, 0, 1) {
logger.Log(msg)
}
}
var (
logDeprecatedHasNextPage int32
logDeprecatedNextPage int32
logDeprecatedEachPage int32
)
// HasNextPage returns true if this request has more pages of data available.
//
// Deprecated Use Pagination type for configurable pagination of API operations
func (r *Request) HasNextPage() bool {
logDeprecatedf(r.Config.Logger, &logDeprecatedHasNextPage,
"Request.HasNextPage deprecated. Use Pagination type for configurable pagination of API operations")
return len(r.nextPageTokens()) > 0
}
// NextPage returns a new Request that can be executed to return the next
// page of result data. Call .Send() on this request to execute it.
//
// Deprecated Use Pagination type for configurable pagination of API operations
func (r *Request) NextPage() *Request {
logDeprecatedf(r.Config.Logger, &logDeprecatedNextPage,
"Request.NextPage deprecated. Use Pagination type for configurable pagination of API operations")
tokens := r.nextPageTokens()
if len(tokens) == 0 {
return nil
}
data := reflect.New(reflect.TypeOf(r.Data).Elem()).Interface()
nr := New(r.Config, r.ClientInfo, r.Handlers, r.Retryer, r.Operation, awsutil.CopyOf(r.Params), data)
for i, intok := range nr.Operation.InputTokens {
awsutil.SetValueAtPath(nr.Params, intok, tokens[i])
}
return nr
}
// EachPage iterates over each page of a paginated request object. The fn
// parameter should be a function with the following sample signature:
//
// func(page *T, lastPage bool) bool {
// return true // return false to stop iterating
// }
//
// Where "T" is the structure type matching the output structure of the given
// operation. For example, a request object generated by
// DynamoDB.ListTablesRequest() would expect to see dynamodb.ListTablesOutput
// as the structure "T". The lastPage value represents whether the page is
// the last page of data or not. The return value of this function should
// return true to keep iterating or false to stop.
//
// Deprecated Use Pagination type for configurable pagination of API operations
func (r *Request) EachPage(fn func(data interface{}, isLastPage bool) (shouldContinue bool)) error {
logDeprecatedf(r.Config.Logger, &logDeprecatedEachPage,
"Request.EachPage deprecated. Use Pagination type for configurable pagination of API operations")
for page := r; page != nil; page = page.NextPage() {
if err := page.Send(); err != nil {
return err
}
if getNextPage := fn(page.Data, !page.HasNextPage()); !getNextPage {
return page.Error
}
}
return nil
}

309
vendor/github.com/aws/aws-sdk-go/aws/request/retryer.go generated vendored Normal file
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package request
import (
"net"
"net/url"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
)
// Retryer provides the interface drive the SDK's request retry behavior. The
// Retryer implementation is responsible for implementing exponential backoff,
// and determine if a request API error should be retried.
//
// client.DefaultRetryer is the SDK's default implementation of the Retryer. It
// uses the Request.IsErrorRetryable and Request.IsErrorThrottle methods to
// determine if the request is retried.
type Retryer interface {
// RetryRules return the retry delay that should be used by the SDK before
// making another request attempt for the failed request.
RetryRules(*Request) time.Duration
// ShouldRetry returns if the failed request is retryable.
//
// Implementations may consider request attempt count when determining if a
// request is retryable, but the SDK will use MaxRetries to limit the
// number of attempts a request are made.
ShouldRetry(*Request) bool
// MaxRetries is the number of times a request may be retried before
// failing.
MaxRetries() int
}
// WithRetryer sets a Retryer value to the given Config returning the Config
// value for chaining. The value must not be nil.
func WithRetryer(cfg *aws.Config, retryer Retryer) *aws.Config {
if retryer == nil {
if cfg.Logger != nil {
cfg.Logger.Log("ERROR: Request.WithRetryer called with nil retryer. Replacing with retry disabled Retryer.")
}
retryer = noOpRetryer{}
}
cfg.Retryer = retryer
return cfg
}
// noOpRetryer is a internal no op retryer used when a request is created
// without a retryer.
//
// Provides a retryer that performs no retries.
// It should be used when we do not want retries to be performed.
type noOpRetryer struct{}
// MaxRetries returns the number of maximum returns the service will use to make
// an individual API; For NoOpRetryer the MaxRetries will always be zero.
func (d noOpRetryer) MaxRetries() int {
return 0
}
// ShouldRetry will always return false for NoOpRetryer, as it should never retry.
func (d noOpRetryer) ShouldRetry(_ *Request) bool {
return false
}
// RetryRules returns the delay duration before retrying this request again;
// since NoOpRetryer does not retry, RetryRules always returns 0.
func (d noOpRetryer) RetryRules(_ *Request) time.Duration {
return 0
}
// retryableCodes is a collection of service response codes which are retry-able
// without any further action.
var retryableCodes = map[string]struct{}{
ErrCodeRequestError: {},
"RequestTimeout": {},
ErrCodeResponseTimeout: {},
"RequestTimeoutException": {}, // Glacier's flavor of RequestTimeout
}
var throttleCodes = map[string]struct{}{
"ProvisionedThroughputExceededException": {},
"ThrottledException": {}, // SNS, XRay, ResourceGroupsTagging API
"Throttling": {},
"ThrottlingException": {},
"RequestLimitExceeded": {},
"RequestThrottled": {},
"RequestThrottledException": {},
"TooManyRequestsException": {}, // Lambda functions
"PriorRequestNotComplete": {}, // Route53
"TransactionInProgressException": {},
"EC2ThrottledException": {}, // EC2
}
// credsExpiredCodes is a collection of error codes which signify the credentials
// need to be refreshed. Expired tokens require refreshing of credentials, and
// resigning before the request can be retried.
var credsExpiredCodes = map[string]struct{}{
"ExpiredToken": {},
"ExpiredTokenException": {},
"RequestExpired": {}, // EC2 Only
}
func isCodeThrottle(code string) bool {
_, ok := throttleCodes[code]
return ok
}
func isCodeRetryable(code string) bool {
if _, ok := retryableCodes[code]; ok {
return true
}
return isCodeExpiredCreds(code)
}
func isCodeExpiredCreds(code string) bool {
_, ok := credsExpiredCodes[code]
return ok
}
var validParentCodes = map[string]struct{}{
ErrCodeSerialization: {},
ErrCodeRead: {},
}
func isNestedErrorRetryable(parentErr awserr.Error) bool {
if parentErr == nil {
return false
}
if _, ok := validParentCodes[parentErr.Code()]; !ok {
return false
}
err := parentErr.OrigErr()
if err == nil {
return false
}
if aerr, ok := err.(awserr.Error); ok {
return isCodeRetryable(aerr.Code())
}
if t, ok := err.(temporary); ok {
return t.Temporary() || isErrConnectionReset(err)
}
return isErrConnectionReset(err)
}
// IsErrorRetryable returns whether the error is retryable, based on its Code.
// Returns false if error is nil.
func IsErrorRetryable(err error) bool {
if err == nil {
return false
}
return shouldRetryError(err)
}
type temporary interface {
Temporary() bool
}
func shouldRetryError(origErr error) bool {
switch err := origErr.(type) {
case awserr.Error:
if err.Code() == CanceledErrorCode {
return false
}
if isNestedErrorRetryable(err) {
return true
}
origErr := err.OrigErr()
var shouldRetry bool
if origErr != nil {
shouldRetry = shouldRetryError(origErr)
if err.Code() == ErrCodeRequestError && !shouldRetry {
return false
}
}
if isCodeRetryable(err.Code()) {
return true
}
return shouldRetry
case *url.Error:
if strings.Contains(err.Error(), "connection refused") {
// Refused connections should be retried as the service may not yet
// be running on the port. Go TCP dial considers refused
// connections as not temporary.
return true
}
// *url.Error only implements Temporary after golang 1.6 but since
// url.Error only wraps the error:
return shouldRetryError(err.Err)
case temporary:
if netErr, ok := err.(*net.OpError); ok && netErr.Op == "dial" {
return true
}
// If the error is temporary, we want to allow continuation of the
// retry process
return err.Temporary() || isErrConnectionReset(origErr)
case nil:
// `awserr.Error.OrigErr()` can be nil, meaning there was an error but
// because we don't know the cause, it is marked as retryable. See
// TestRequest4xxUnretryable for an example.
return true
default:
switch err.Error() {
case "net/http: request canceled",
"net/http: request canceled while waiting for connection":
// known 1.5 error case when an http request is cancelled
return false
}
// here we don't know the error; so we allow a retry.
return true
}
}
// IsErrorThrottle returns whether the error is to be throttled based on its code.
// Returns false if error is nil.
func IsErrorThrottle(err error) bool {
if aerr, ok := err.(awserr.Error); ok && aerr != nil {
return isCodeThrottle(aerr.Code())
}
return false
}
// IsErrorExpiredCreds returns whether the error code is a credential expiry
// error. Returns false if error is nil.
func IsErrorExpiredCreds(err error) bool {
if aerr, ok := err.(awserr.Error); ok && aerr != nil {
return isCodeExpiredCreds(aerr.Code())
}
return false
}
// IsErrorRetryable returns whether the error is retryable, based on its Code.
// Returns false if the request has no Error set.
//
// Alias for the utility function IsErrorRetryable
func (r *Request) IsErrorRetryable() bool {
if isErrCode(r.Error, r.RetryErrorCodes) {
return true
}
// HTTP response status code 501 should not be retried.
// 501 represents Not Implemented which means the request method is not
// supported by the server and cannot be handled.
if r.HTTPResponse != nil {
// HTTP response status code 500 represents internal server error and
// should be retried without any throttle.
if r.HTTPResponse.StatusCode == 500 {
return true
}
}
return IsErrorRetryable(r.Error)
}
// IsErrorThrottle returns whether the error is to be throttled based on its
// code. Returns false if the request has no Error set.
//
// Alias for the utility function IsErrorThrottle
func (r *Request) IsErrorThrottle() bool {
if isErrCode(r.Error, r.ThrottleErrorCodes) {
return true
}
if r.HTTPResponse != nil {
switch r.HTTPResponse.StatusCode {
case
429, // error caused due to too many requests
502, // Bad Gateway error should be throttled
503, // caused when service is unavailable
504: // error occurred due to gateway timeout
return true
}
}
return IsErrorThrottle(r.Error)
}
func isErrCode(err error, codes []string) bool {
if aerr, ok := err.(awserr.Error); ok && aerr != nil {
for _, code := range codes {
if code == aerr.Code() {
return true
}
}
}
return false
}
// IsErrorExpired returns whether the error code is a credential expiry error.
// Returns false if the request has no Error set.
//
// Alias for the utility function IsErrorExpiredCreds
func (r *Request) IsErrorExpired() bool {
return IsErrorExpiredCreds(r.Error)
}

94
vendor/github.com/aws/aws-sdk-go/aws/request/timeout_read_closer.go generated vendored Normal file
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package request
import (
"io"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
)
var timeoutErr = awserr.New(
ErrCodeResponseTimeout,
"read on body has reached the timeout limit",
nil,
)
type readResult struct {
n int
err error
}
// timeoutReadCloser will handle body reads that take too long.
// We will return a ErrReadTimeout error if a timeout occurs.
type timeoutReadCloser struct {
reader io.ReadCloser
duration time.Duration
}
// Read will spin off a goroutine to call the reader's Read method. We will
// select on the timer's channel or the read's channel. Whoever completes first
// will be returned.
func (r *timeoutReadCloser) Read(b []byte) (int, error) {
timer := time.NewTimer(r.duration)
c := make(chan readResult, 1)
go func() {
n, err := r.reader.Read(b)
timer.Stop()
c <- readResult{n: n, err: err}
}()
select {
case data := <-c:
return data.n, data.err
case <-timer.C:
return 0, timeoutErr
}
}
func (r *timeoutReadCloser) Close() error {
return r.reader.Close()
}
const (
// HandlerResponseTimeout is what we use to signify the name of the
// response timeout handler.
HandlerResponseTimeout = "ResponseTimeoutHandler"
)
// adaptToResponseTimeoutError is a handler that will replace any top level error
// to a ErrCodeResponseTimeout, if its child is that.
func adaptToResponseTimeoutError(req *Request) {
if err, ok := req.Error.(awserr.Error); ok {
aerr, ok := err.OrigErr().(awserr.Error)
if ok && aerr.Code() == ErrCodeResponseTimeout {
req.Error = aerr
}
}
}
// WithResponseReadTimeout is a request option that will wrap the body in a timeout read closer.
// This will allow for per read timeouts. If a timeout occurred, we will return the
// ErrCodeResponseTimeout.
//
// svc.PutObjectWithContext(ctx, params, request.WithTimeoutReadCloser(30 * time.Second)
func WithResponseReadTimeout(duration time.Duration) Option {
return func(r *Request) {
var timeoutHandler = NamedHandler{
HandlerResponseTimeout,
func(req *Request) {
req.HTTPResponse.Body = &timeoutReadCloser{
reader: req.HTTPResponse.Body,
duration: duration,
}
}}
// remove the handler so we are not stomping over any new durations.
r.Handlers.Send.RemoveByName(HandlerResponseTimeout)
r.Handlers.Send.PushBackNamed(timeoutHandler)
r.Handlers.Unmarshal.PushBack(adaptToResponseTimeoutError)
r.Handlers.UnmarshalError.PushBack(adaptToResponseTimeoutError)
}
}

286
vendor/github.com/aws/aws-sdk-go/aws/request/validation.go generated vendored Normal file
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package request
import (
"bytes"
"fmt"
"github.com/aws/aws-sdk-go/aws/awserr"
)
const (
// InvalidParameterErrCode is the error code for invalid parameters errors
InvalidParameterErrCode = "InvalidParameter"
// ParamRequiredErrCode is the error code for required parameter errors
ParamRequiredErrCode = "ParamRequiredError"
// ParamMinValueErrCode is the error code for fields with too low of a
// number value.
ParamMinValueErrCode = "ParamMinValueError"
// ParamMinLenErrCode is the error code for fields without enough elements.
ParamMinLenErrCode = "ParamMinLenError"
// ParamMaxLenErrCode is the error code for value being too long.
ParamMaxLenErrCode = "ParamMaxLenError"
// ParamFormatErrCode is the error code for a field with invalid
// format or characters.
ParamFormatErrCode = "ParamFormatInvalidError"
)
// Validator provides a way for types to perform validation logic on their
// input values that external code can use to determine if a type's values
// are valid.
type Validator interface {
Validate() error
}
// An ErrInvalidParams provides wrapping of invalid parameter errors found when
// validating API operation input parameters.
type ErrInvalidParams struct {
// Context is the base context of the invalid parameter group.
Context string
errs []ErrInvalidParam
}
// Add adds a new invalid parameter error to the collection of invalid
// parameters. The context of the invalid parameter will be updated to reflect
// this collection.
func (e *ErrInvalidParams) Add(err ErrInvalidParam) {
err.SetContext(e.Context)
e.errs = append(e.errs, err)
}
// AddNested adds the invalid parameter errors from another ErrInvalidParams
// value into this collection. The nested errors will have their nested context
// updated and base context to reflect the merging.
//
// Use for nested validations errors.
func (e *ErrInvalidParams) AddNested(nestedCtx string, nested ErrInvalidParams) {
for _, err := range nested.errs {
err.SetContext(e.Context)
err.AddNestedContext(nestedCtx)
e.errs = append(e.errs, err)
}
}
// Len returns the number of invalid parameter errors
func (e ErrInvalidParams) Len() int {
return len(e.errs)
}
// Code returns the code of the error
func (e ErrInvalidParams) Code() string {
return InvalidParameterErrCode
}
// Message returns the message of the error
func (e ErrInvalidParams) Message() string {
return fmt.Sprintf("%d validation error(s) found.", len(e.errs))
}
// Error returns the string formatted form of the invalid parameters.
func (e ErrInvalidParams) Error() string {
w := &bytes.Buffer{}
fmt.Fprintf(w, "%s: %s\n", e.Code(), e.Message())
for _, err := range e.errs {
fmt.Fprintf(w, "- %s\n", err.Message())
}
return w.String()
}
// OrigErr returns the invalid parameters as a awserr.BatchedErrors value
func (e ErrInvalidParams) OrigErr() error {
return awserr.NewBatchError(
InvalidParameterErrCode, e.Message(), e.OrigErrs())
}
// OrigErrs returns a slice of the invalid parameters
func (e ErrInvalidParams) OrigErrs() []error {
errs := make([]error, len(e.errs))
for i := 0; i < len(errs); i++ {
errs[i] = e.errs[i]
}
return errs
}
// An ErrInvalidParam represents an invalid parameter error type.
type ErrInvalidParam interface {
awserr.Error
// Field name the error occurred on.
Field() string
// SetContext updates the context of the error.
SetContext(string)
// AddNestedContext updates the error's context to include a nested level.
AddNestedContext(string)
}
type errInvalidParam struct {
context string
nestedContext string
field string
code string
msg string
}
// Code returns the error code for the type of invalid parameter.
func (e *errInvalidParam) Code() string {
return e.code
}
// Message returns the reason the parameter was invalid, and its context.
func (e *errInvalidParam) Message() string {
return fmt.Sprintf("%s, %s.", e.msg, e.Field())
}
// Error returns the string version of the invalid parameter error.
func (e *errInvalidParam) Error() string {
return fmt.Sprintf("%s: %s", e.code, e.Message())
}
// OrigErr returns nil, Implemented for awserr.Error interface.
func (e *errInvalidParam) OrigErr() error {
return nil
}
// Field Returns the field and context the error occurred.
func (e *errInvalidParam) Field() string {
field := e.context
if len(field) > 0 {
field += "."
}
if len(e.nestedContext) > 0 {
field += fmt.Sprintf("%s.", e.nestedContext)
}
field += e.field
return field
}
// SetContext updates the base context of the error.
func (e *errInvalidParam) SetContext(ctx string) {
e.context = ctx
}
// AddNestedContext prepends a context to the field's path.
func (e *errInvalidParam) AddNestedContext(ctx string) {
if len(e.nestedContext) == 0 {
e.nestedContext = ctx
} else {
e.nestedContext = fmt.Sprintf("%s.%s", ctx, e.nestedContext)
}
}
// An ErrParamRequired represents an required parameter error.
type ErrParamRequired struct {
errInvalidParam
}
// NewErrParamRequired creates a new required parameter error.
func NewErrParamRequired(field string) *ErrParamRequired {
return &ErrParamRequired{
errInvalidParam{
code: ParamRequiredErrCode,
field: field,
msg: fmt.Sprintf("missing required field"),
},
}
}
// An ErrParamMinValue represents a minimum value parameter error.
type ErrParamMinValue struct {
errInvalidParam
min float64
}
// NewErrParamMinValue creates a new minimum value parameter error.
func NewErrParamMinValue(field string, min float64) *ErrParamMinValue {
return &ErrParamMinValue{
errInvalidParam: errInvalidParam{
code: ParamMinValueErrCode,
field: field,
msg: fmt.Sprintf("minimum field value of %v", min),
},
min: min,
}
}
// MinValue returns the field's require minimum value.
//
// float64 is returned for both int and float min values.
func (e *ErrParamMinValue) MinValue() float64 {
return e.min
}
// An ErrParamMinLen represents a minimum length parameter error.
type ErrParamMinLen struct {
errInvalidParam
min int
}
// NewErrParamMinLen creates a new minimum length parameter error.
func NewErrParamMinLen(field string, min int) *ErrParamMinLen {
return &ErrParamMinLen{
errInvalidParam: errInvalidParam{
code: ParamMinLenErrCode,
field: field,
msg: fmt.Sprintf("minimum field size of %v", min),
},
min: min,
}
}
// MinLen returns the field's required minimum length.
func (e *ErrParamMinLen) MinLen() int {
return e.min
}
// An ErrParamMaxLen represents a maximum length parameter error.
type ErrParamMaxLen struct {
errInvalidParam
max int
}
// NewErrParamMaxLen creates a new maximum length parameter error.
func NewErrParamMaxLen(field string, max int, value string) *ErrParamMaxLen {
return &ErrParamMaxLen{
errInvalidParam: errInvalidParam{
code: ParamMaxLenErrCode,
field: field,
msg: fmt.Sprintf("maximum size of %v, %v", max, value),
},
max: max,
}
}
// MaxLen returns the field's required minimum length.
func (e *ErrParamMaxLen) MaxLen() int {
return e.max
}
// An ErrParamFormat represents a invalid format parameter error.
type ErrParamFormat struct {
errInvalidParam
format string
}
// NewErrParamFormat creates a new invalid format parameter error.
func NewErrParamFormat(field string, format, value string) *ErrParamFormat {
return &ErrParamFormat{
errInvalidParam: errInvalidParam{
code: ParamFormatErrCode,
field: field,
msg: fmt.Sprintf("format %v, %v", format, value),
},
format: format,
}
}
// Format returns the field's required format.
func (e *ErrParamFormat) Format() string {
return e.format
}

295
vendor/github.com/aws/aws-sdk-go/aws/request/waiter.go generated vendored Normal file
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package request
import (
"fmt"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/awsutil"
)
// WaiterResourceNotReadyErrorCode is the error code returned by a waiter when
// the waiter's max attempts have been exhausted.
const WaiterResourceNotReadyErrorCode = "ResourceNotReady"
// A WaiterOption is a function that will update the Waiter value's fields to
// configure the waiter.
type WaiterOption func(*Waiter)
// WithWaiterMaxAttempts returns the maximum number of times the waiter should
// attempt to check the resource for the target state.
func WithWaiterMaxAttempts(max int) WaiterOption {
return func(w *Waiter) {
w.MaxAttempts = max
}
}
// WaiterDelay will return a delay the waiter should pause between attempts to
// check the resource state. The passed in attempt is the number of times the
// Waiter has checked the resource state.
//
// Attempt is the number of attempts the Waiter has made checking the resource
// state.
type WaiterDelay func(attempt int) time.Duration
// ConstantWaiterDelay returns a WaiterDelay that will always return a constant
// delay the waiter should use between attempts. It ignores the number of
// attempts made.
func ConstantWaiterDelay(delay time.Duration) WaiterDelay {
return func(attempt int) time.Duration {
return delay
}
}
// WithWaiterDelay will set the Waiter to use the WaiterDelay passed in.
func WithWaiterDelay(delayer WaiterDelay) WaiterOption {
return func(w *Waiter) {
w.Delay = delayer
}
}
// WithWaiterLogger returns a waiter option to set the logger a waiter
// should use to log warnings and errors to.
func WithWaiterLogger(logger aws.Logger) WaiterOption {
return func(w *Waiter) {
w.Logger = logger
}
}
// WithWaiterRequestOptions returns a waiter option setting the request
// options for each request the waiter makes. Appends to waiter's request
// options already set.
func WithWaiterRequestOptions(opts ...Option) WaiterOption {
return func(w *Waiter) {
w.RequestOptions = append(w.RequestOptions, opts...)
}
}
// A Waiter provides the functionality to perform a blocking call which will
// wait for a resource state to be satisfied by a service.
//
// This type should not be used directly. The API operations provided in the
// service packages prefixed with "WaitUntil" should be used instead.
type Waiter struct {
Name string
Acceptors []WaiterAcceptor
Logger aws.Logger
MaxAttempts int
Delay WaiterDelay
RequestOptions []Option
NewRequest func([]Option) (*Request, error)
SleepWithContext func(aws.Context, time.Duration) error
}
// ApplyOptions updates the waiter with the list of waiter options provided.
func (w *Waiter) ApplyOptions(opts ...WaiterOption) {
for _, fn := range opts {
fn(w)
}
}
// WaiterState are states the waiter uses based on WaiterAcceptor definitions
// to identify if the resource state the waiter is waiting on has occurred.
type WaiterState int
// String returns the string representation of the waiter state.
func (s WaiterState) String() string {
switch s {
case SuccessWaiterState:
return "success"
case FailureWaiterState:
return "failure"
case RetryWaiterState:
return "retry"
default:
return "unknown waiter state"
}
}
// States the waiter acceptors will use to identify target resource states.
const (
SuccessWaiterState WaiterState = iota // waiter successful
FailureWaiterState // waiter failed
RetryWaiterState // waiter needs to be retried
)
// WaiterMatchMode is the mode that the waiter will use to match the WaiterAcceptor
// definition's Expected attribute.
type WaiterMatchMode int
// Modes the waiter will use when inspecting API response to identify target
// resource states.
const (
PathAllWaiterMatch WaiterMatchMode = iota // match on all paths
PathWaiterMatch // match on specific path
PathAnyWaiterMatch // match on any path
PathListWaiterMatch // match on list of paths
StatusWaiterMatch // match on status code
ErrorWaiterMatch // match on error
)
// String returns the string representation of the waiter match mode.
func (m WaiterMatchMode) String() string {
switch m {
case PathAllWaiterMatch:
return "pathAll"
case PathWaiterMatch:
return "path"
case PathAnyWaiterMatch:
return "pathAny"
case PathListWaiterMatch:
return "pathList"
case StatusWaiterMatch:
return "status"
case ErrorWaiterMatch:
return "error"
default:
return "unknown waiter match mode"
}
}
// WaitWithContext will make requests for the API operation using NewRequest to
// build API requests. The request's response will be compared against the
// Waiter's Acceptors to determine the successful state of the resource the
// waiter is inspecting.
//
// The passed in context must not be nil. If it is nil a panic will occur. The
// Context will be used to cancel the waiter's pending requests and retry delays.
// Use aws.BackgroundContext if no context is available.
//
// The waiter will continue until the target state defined by the Acceptors,
// or the max attempts expires.
//
// Will return the WaiterResourceNotReadyErrorCode error code if the waiter's
// retryer ShouldRetry returns false. This normally will happen when the max
// wait attempts expires.
func (w Waiter) WaitWithContext(ctx aws.Context) error {
for attempt := 1; ; attempt++ {
req, err := w.NewRequest(w.RequestOptions)
if err != nil {
waiterLogf(w.Logger, "unable to create request %v", err)
return err
}
req.Handlers.Build.PushBack(MakeAddToUserAgentFreeFormHandler("Waiter"))
err = req.Send()
// See if any of the acceptors match the request's response, or error
for _, a := range w.Acceptors {
if matched, matchErr := a.match(w.Name, w.Logger, req, err); matched {
return matchErr
}
}
// The Waiter should only check the resource state MaxAttempts times
// This is here instead of in the for loop above to prevent delaying
// unnecessary when the waiter will not retry.
if attempt == w.MaxAttempts {
break
}
// Delay to wait before inspecting the resource again
delay := w.Delay(attempt)
if sleepFn := req.Config.SleepDelay; sleepFn != nil {
// Support SleepDelay for backwards compatibility and testing
sleepFn(delay)
} else {
sleepCtxFn := w.SleepWithContext
if sleepCtxFn == nil {
sleepCtxFn = aws.SleepWithContext
}
if err := sleepCtxFn(ctx, delay); err != nil {
return awserr.New(CanceledErrorCode, "waiter context canceled", err)
}
}
}
return awserr.New(WaiterResourceNotReadyErrorCode, "exceeded wait attempts", nil)
}
// A WaiterAcceptor provides the information needed to wait for an API operation
// to complete.
type WaiterAcceptor struct {
State WaiterState
Matcher WaiterMatchMode
Argument string
Expected interface{}
}
// match returns if the acceptor found a match with the passed in request
// or error. True is returned if the acceptor made a match, error is returned
// if there was an error attempting to perform the match.
func (a *WaiterAcceptor) match(name string, l aws.Logger, req *Request, err error) (bool, error) {
result := false
var vals []interface{}
switch a.Matcher {
case PathAllWaiterMatch, PathWaiterMatch:
// Require all matches to be equal for result to match
vals, _ = awsutil.ValuesAtPath(req.Data, a.Argument)
if len(vals) == 0 {
break
}
result = true
for _, val := range vals {
if !awsutil.DeepEqual(val, a.Expected) {
result = false
break
}
}
case PathAnyWaiterMatch:
// Only a single match needs to equal for the result to match
vals, _ = awsutil.ValuesAtPath(req.Data, a.Argument)
for _, val := range vals {
if awsutil.DeepEqual(val, a.Expected) {
result = true
break
}
}
case PathListWaiterMatch:
// ignored matcher
case StatusWaiterMatch:
s := a.Expected.(int)
result = s == req.HTTPResponse.StatusCode
case ErrorWaiterMatch:
if aerr, ok := err.(awserr.Error); ok {
result = aerr.Code() == a.Expected.(string)
}
default:
waiterLogf(l, "WARNING: Waiter %s encountered unexpected matcher: %s",
name, a.Matcher)
}
if !result {
// If there was no matching result found there is nothing more to do
// for this response, retry the request.
return false, nil
}
switch a.State {
case SuccessWaiterState:
// waiter completed
return true, nil
case FailureWaiterState:
// Waiter failure state triggered
return true, awserr.New(WaiterResourceNotReadyErrorCode,
"failed waiting for successful resource state", err)
case RetryWaiterState:
// clear the error and retry the operation
return false, nil
default:
waiterLogf(l, "WARNING: Waiter %s encountered unexpected state: %s",
name, a.State)
return false, nil
}
}
func waiterLogf(logger aws.Logger, msg string, args ...interface{}) {
if logger != nil {
logger.Log(fmt.Sprintf(msg, args...))
}
}

333
vendor/github.com/aws/aws-sdk-go/aws/session/credentials.go generated vendored Normal file
View file

@ -0,0 +1,333 @@
package session
import (
"fmt"
"os"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/credentials/processcreds"
"github.com/aws/aws-sdk-go/aws/credentials/ssocreds"
"github.com/aws/aws-sdk-go/aws/credentials/stscreds"
"github.com/aws/aws-sdk-go/aws/defaults"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/internal/shareddefaults"
"github.com/aws/aws-sdk-go/service/ssooidc"
"github.com/aws/aws-sdk-go/service/sts"
)
// CredentialsProviderOptions specifies additional options for configuring
// credentials providers.
type CredentialsProviderOptions struct {
// WebIdentityRoleProviderOptions configures a WebIdentityRoleProvider,
// such as setting its ExpiryWindow.
WebIdentityRoleProviderOptions func(*stscreds.WebIdentityRoleProvider)
// ProcessProviderOptions configures a ProcessProvider,
// such as setting its Timeout.
ProcessProviderOptions func(*processcreds.ProcessProvider)
}
func resolveCredentials(cfg *aws.Config,
envCfg envConfig, sharedCfg sharedConfig,
handlers request.Handlers,
sessOpts Options,
) (*credentials.Credentials, error) {
switch {
case len(sessOpts.Profile) != 0:
// User explicitly provided a Profile in the session's configuration
// so load that profile from shared config first.
// Github(aws/aws-sdk-go#2727)
return resolveCredsFromProfile(cfg, envCfg, sharedCfg, handlers, sessOpts)
case envCfg.Creds.HasKeys():
// Environment credentials
return credentials.NewStaticCredentialsFromCreds(envCfg.Creds), nil
case len(envCfg.WebIdentityTokenFilePath) != 0:
// Web identity token from environment, RoleARN required to also be
// set.
return assumeWebIdentity(cfg, handlers,
envCfg.WebIdentityTokenFilePath,
envCfg.RoleARN,
envCfg.RoleSessionName,
sessOpts.CredentialsProviderOptions,
)
default:
// Fallback to the "default" credential resolution chain.
return resolveCredsFromProfile(cfg, envCfg, sharedCfg, handlers, sessOpts)
}
}
// WebIdentityEmptyRoleARNErr will occur if 'AWS_WEB_IDENTITY_TOKEN_FILE' was set but
// 'AWS_ROLE_ARN' was not set.
var WebIdentityEmptyRoleARNErr = awserr.New(stscreds.ErrCodeWebIdentity, "role ARN is not set", nil)
// WebIdentityEmptyTokenFilePathErr will occur if 'AWS_ROLE_ARN' was set but
// 'AWS_WEB_IDENTITY_TOKEN_FILE' was not set.
var WebIdentityEmptyTokenFilePathErr = awserr.New(stscreds.ErrCodeWebIdentity, "token file path is not set", nil)
func assumeWebIdentity(cfg *aws.Config, handlers request.Handlers,
filepath string,
roleARN, sessionName string,
credOptions *CredentialsProviderOptions,
) (*credentials.Credentials, error) {
if len(filepath) == 0 {
return nil, WebIdentityEmptyTokenFilePathErr
}
if len(roleARN) == 0 {
return nil, WebIdentityEmptyRoleARNErr
}
svc := sts.New(&Session{
Config: cfg,
Handlers: handlers.Copy(),
})
var optFns []func(*stscreds.WebIdentityRoleProvider)
if credOptions != nil && credOptions.WebIdentityRoleProviderOptions != nil {
optFns = append(optFns, credOptions.WebIdentityRoleProviderOptions)
}
p := stscreds.NewWebIdentityRoleProviderWithOptions(svc, roleARN, sessionName, stscreds.FetchTokenPath(filepath), optFns...)
return credentials.NewCredentials(p), nil
}
func resolveCredsFromProfile(cfg *aws.Config,
envCfg envConfig, sharedCfg sharedConfig,
handlers request.Handlers,
sessOpts Options,
) (creds *credentials.Credentials, err error) {
switch {
case sharedCfg.SourceProfile != nil:
// Assume IAM role with credentials source from a different profile.
creds, err = resolveCredsFromProfile(cfg, envCfg,
*sharedCfg.SourceProfile, handlers, sessOpts,
)
case sharedCfg.Creds.HasKeys():
// Static Credentials from Shared Config/Credentials file.
creds = credentials.NewStaticCredentialsFromCreds(
sharedCfg.Creds,
)
case len(sharedCfg.CredentialSource) != 0:
creds, err = resolveCredsFromSource(cfg, envCfg,
sharedCfg, handlers, sessOpts,
)
case len(sharedCfg.WebIdentityTokenFile) != 0:
// Credentials from Assume Web Identity token require an IAM Role, and
// that roll will be assumed. May be wrapped with another assume role
// via SourceProfile.
return assumeWebIdentity(cfg, handlers,
sharedCfg.WebIdentityTokenFile,
sharedCfg.RoleARN,
sharedCfg.RoleSessionName,
sessOpts.CredentialsProviderOptions,
)
case sharedCfg.hasSSOConfiguration():
creds, err = resolveSSOCredentials(cfg, sharedCfg, handlers)
case len(sharedCfg.CredentialProcess) != 0:
// Get credentials from CredentialProcess
var optFns []func(*processcreds.ProcessProvider)
if sessOpts.CredentialsProviderOptions != nil && sessOpts.CredentialsProviderOptions.ProcessProviderOptions != nil {
optFns = append(optFns, sessOpts.CredentialsProviderOptions.ProcessProviderOptions)
}
creds = processcreds.NewCredentials(sharedCfg.CredentialProcess, optFns...)
default:
// Fallback to default credentials provider, include mock errors for
// the credential chain so user can identify why credentials failed to
// be retrieved.
creds = credentials.NewCredentials(&credentials.ChainProvider{
VerboseErrors: aws.BoolValue(cfg.CredentialsChainVerboseErrors),
Providers: []credentials.Provider{
&credProviderError{
Err: awserr.New("EnvAccessKeyNotFound",
"failed to find credentials in the environment.", nil),
},
&credProviderError{
Err: awserr.New("SharedCredsLoad",
fmt.Sprintf("failed to load profile, %s.", envCfg.Profile), nil),
},
defaults.RemoteCredProvider(*cfg, handlers),
},
})
}
if err != nil {
return nil, err
}
if len(sharedCfg.RoleARN) > 0 {
cfgCp := *cfg
cfgCp.Credentials = creds
return credsFromAssumeRole(cfgCp, handlers, sharedCfg, sessOpts)
}
return creds, nil
}
func resolveSSOCredentials(cfg *aws.Config, sharedCfg sharedConfig, handlers request.Handlers) (*credentials.Credentials, error) {
if err := sharedCfg.validateSSOConfiguration(); err != nil {
return nil, err
}
var optFns []func(provider *ssocreds.Provider)
cfgCopy := cfg.Copy()
if sharedCfg.SSOSession != nil {
cfgCopy.Region = &sharedCfg.SSOSession.SSORegion
cachedPath, err := ssocreds.StandardCachedTokenFilepath(sharedCfg.SSOSession.Name)
if err != nil {
return nil, err
}
// create oidcClient with AnonymousCredentials to avoid recursively resolving credentials
mySession := Must(NewSession(&aws.Config{
Credentials: credentials.AnonymousCredentials,
}))
oidcClient := ssooidc.New(mySession, cfgCopy)
tokenProvider := ssocreds.NewSSOTokenProvider(oidcClient, cachedPath)
optFns = append(optFns, func(p *ssocreds.Provider) {
p.TokenProvider = tokenProvider
p.CachedTokenFilepath = cachedPath
})
} else {
cfgCopy.Region = &sharedCfg.SSORegion
}
return ssocreds.NewCredentials(
&Session{
Config: cfgCopy,
Handlers: handlers.Copy(),
},
sharedCfg.SSOAccountID,
sharedCfg.SSORoleName,
sharedCfg.SSOStartURL,
optFns...,
), nil
}
// valid credential source values
const (
credSourceEc2Metadata = "Ec2InstanceMetadata"
credSourceEnvironment = "Environment"
credSourceECSContainer = "EcsContainer"
)
func resolveCredsFromSource(cfg *aws.Config,
envCfg envConfig, sharedCfg sharedConfig,
handlers request.Handlers,
sessOpts Options,
) (creds *credentials.Credentials, err error) {
switch sharedCfg.CredentialSource {
case credSourceEc2Metadata:
p := defaults.RemoteCredProvider(*cfg, handlers)
creds = credentials.NewCredentials(p)
case credSourceEnvironment:
creds = credentials.NewStaticCredentialsFromCreds(envCfg.Creds)
case credSourceECSContainer:
if len(os.Getenv(shareddefaults.ECSCredsProviderEnvVar)) == 0 {
return nil, ErrSharedConfigECSContainerEnvVarEmpty
}
p := defaults.RemoteCredProvider(*cfg, handlers)
creds = credentials.NewCredentials(p)
default:
return nil, ErrSharedConfigInvalidCredSource
}
return creds, nil
}
func credsFromAssumeRole(cfg aws.Config,
handlers request.Handlers,
sharedCfg sharedConfig,
sessOpts Options,
) (*credentials.Credentials, error) {
if len(sharedCfg.MFASerial) != 0 && sessOpts.AssumeRoleTokenProvider == nil {
// AssumeRole Token provider is required if doing Assume Role
// with MFA.
return nil, AssumeRoleTokenProviderNotSetError{}
}
return stscreds.NewCredentials(
&Session{
Config: &cfg,
Handlers: handlers.Copy(),
},
sharedCfg.RoleARN,
func(opt *stscreds.AssumeRoleProvider) {
opt.RoleSessionName = sharedCfg.RoleSessionName
if sessOpts.AssumeRoleDuration == 0 &&
sharedCfg.AssumeRoleDuration != nil &&
*sharedCfg.AssumeRoleDuration/time.Minute > 15 {
opt.Duration = *sharedCfg.AssumeRoleDuration
} else if sessOpts.AssumeRoleDuration != 0 {
opt.Duration = sessOpts.AssumeRoleDuration
}
// Assume role with external ID
if len(sharedCfg.ExternalID) > 0 {
opt.ExternalID = aws.String(sharedCfg.ExternalID)
}
// Assume role with MFA
if len(sharedCfg.MFASerial) > 0 {
opt.SerialNumber = aws.String(sharedCfg.MFASerial)
opt.TokenProvider = sessOpts.AssumeRoleTokenProvider
}
},
), nil
}
// AssumeRoleTokenProviderNotSetError is an error returned when creating a
// session when the MFAToken option is not set when shared config is configured
// load assume a role with an MFA token.
type AssumeRoleTokenProviderNotSetError struct{}
// Code is the short id of the error.
func (e AssumeRoleTokenProviderNotSetError) Code() string {
return "AssumeRoleTokenProviderNotSetError"
}
// Message is the description of the error
func (e AssumeRoleTokenProviderNotSetError) Message() string {
return fmt.Sprintf("assume role with MFA enabled, but AssumeRoleTokenProvider session option not set.")
}
// OrigErr is the underlying error that caused the failure.
func (e AssumeRoleTokenProviderNotSetError) OrigErr() error {
return nil
}
// Error satisfies the error interface.
func (e AssumeRoleTokenProviderNotSetError) Error() string {
return awserr.SprintError(e.Code(), e.Message(), "", nil)
}
type credProviderError struct {
Err error
}
func (c credProviderError) Retrieve() (credentials.Value, error) {
return credentials.Value{}, c.Err
}
func (c credProviderError) IsExpired() bool {
return true
}

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//go:build go1.13
// +build go1.13
package session
import (
"net"
"net/http"
"time"
)
// Transport that should be used when a custom CA bundle is specified with the
// SDK.
func getCustomTransport() *http.Transport {
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
ForceAttemptHTTP2: true,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
}
}

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//go:build !go1.13 && go1.7
// +build !go1.13,go1.7
package session
import (
"net"
"net/http"
"time"
)
// Transport that should be used when a custom CA bundle is specified with the
// SDK.
func getCustomTransport() *http.Transport {
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
}
}

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//go:build !go1.6 && go1.5
// +build !go1.6,go1.5
package session
import (
"net"
"net/http"
"time"
)
// Transport that should be used when a custom CA bundle is specified with the
// SDK.
func getCustomTransport() *http.Transport {
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
TLSHandshakeTimeout: 10 * time.Second,
}
}

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//go:build !go1.7 && go1.6
// +build !go1.7,go1.6
package session
import (
"net"
"net/http"
"time"
)
// Transport that should be used when a custom CA bundle is specified with the
// SDK.
func getCustomTransport() *http.Transport {
return &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
}
}

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/*
Package session provides configuration for the SDK's service clients. Sessions
can be shared across service clients that share the same base configuration.
Sessions are safe to use concurrently as long as the Session is not being
modified. Sessions should be cached when possible, because creating a new
Session will load all configuration values from the environment, and config
files each time the Session is created. Sharing the Session value across all of
your service clients will ensure the configuration is loaded the fewest number
of times possible.
Sessions options from Shared Config
By default NewSession will only load credentials from the shared credentials
file (~/.aws/credentials). If the AWS_SDK_LOAD_CONFIG environment variable is
set to a truthy value the Session will be created from the configuration
values from the shared config (~/.aws/config) and shared credentials
(~/.aws/credentials) files. Using the NewSessionWithOptions with
SharedConfigState set to SharedConfigEnable will create the session as if the
AWS_SDK_LOAD_CONFIG environment variable was set.
Credential and config loading order
The Session will attempt to load configuration and credentials from the
environment, configuration files, and other credential sources. The order
configuration is loaded in is:
* Environment Variables
* Shared Credentials file
* Shared Configuration file (if SharedConfig is enabled)
* EC2 Instance Metadata (credentials only)
The Environment variables for credentials will have precedence over shared
config even if SharedConfig is enabled. To override this behavior, and use
shared config credentials instead specify the session.Options.Profile, (e.g.
when using credential_source=Environment to assume a role).
sess, err := session.NewSessionWithOptions(session.Options{
Profile: "myProfile",
})
Creating Sessions
Creating a Session without additional options will load credentials region, and
profile loaded from the environment and shared config automatically. See,
"Environment Variables" section for information on environment variables used
by Session.
// Create Session
sess, err := session.NewSession()
When creating Sessions optional aws.Config values can be passed in that will
override the default, or loaded, config values the Session is being created
with. This allows you to provide additional, or case based, configuration
as needed.
// Create a Session with a custom region
sess, err := session.NewSession(&aws.Config{
Region: aws.String("us-west-2"),
})
Use NewSessionWithOptions to provide additional configuration driving how the
Session's configuration will be loaded. Such as, specifying shared config
profile, or override the shared config state, (AWS_SDK_LOAD_CONFIG).
// Equivalent to session.NewSession()
sess, err := session.NewSessionWithOptions(session.Options{
// Options
})
sess, err := session.NewSessionWithOptions(session.Options{
// Specify profile to load for the session's config
Profile: "profile_name",
// Provide SDK Config options, such as Region.
Config: aws.Config{
Region: aws.String("us-west-2"),
},
// Force enable Shared Config support
SharedConfigState: session.SharedConfigEnable,
})
Adding Handlers
You can add handlers to a session to decorate API operation, (e.g. adding HTTP
headers). All clients that use the Session receive a copy of the Session's
handlers. For example, the following request handler added to the Session logs
every requests made.
// Create a session, and add additional handlers for all service
// clients created with the Session to inherit. Adds logging handler.
sess := session.Must(session.NewSession())
sess.Handlers.Send.PushFront(func(r *request.Request) {
// Log every request made and its payload
logger.Printf("Request: %s/%s, Params: %s",
r.ClientInfo.ServiceName, r.Operation, r.Params)
})
Shared Config Fields
By default the SDK will only load the shared credentials file's
(~/.aws/credentials) credentials values, and all other config is provided by
the environment variables, SDK defaults, and user provided aws.Config values.
If the AWS_SDK_LOAD_CONFIG environment variable is set, or SharedConfigEnable
option is used to create the Session the full shared config values will be
loaded. This includes credentials, region, and support for assume role. In
addition the Session will load its configuration from both the shared config
file (~/.aws/config) and shared credentials file (~/.aws/credentials). Both
files have the same format.
If both config files are present the configuration from both files will be
read. The Session will be created from configuration values from the shared
credentials file (~/.aws/credentials) over those in the shared config file
(~/.aws/config).
Credentials are the values the SDK uses to authenticating requests with AWS
Services. When specified in a file, both aws_access_key_id and
aws_secret_access_key must be provided together in the same file to be
considered valid. They will be ignored if both are not present.
aws_session_token is an optional field that can be provided in addition to the
other two fields.
aws_access_key_id = AKID
aws_secret_access_key = SECRET
aws_session_token = TOKEN
; region only supported if SharedConfigEnabled.
region = us-east-1
Assume Role configuration
The role_arn field allows you to configure the SDK to assume an IAM role using
a set of credentials from another source. Such as when paired with static
credentials, "profile_source", "credential_process", or "credential_source"
fields. If "role_arn" is provided, a source of credentials must also be
specified, such as "source_profile", "credential_source", or
"credential_process".
role_arn = arn:aws:iam::<account_number>:role/<role_name>
source_profile = profile_with_creds
external_id = 1234
mfa_serial = <serial or mfa arn>
role_session_name = session_name
The SDK supports assuming a role with MFA token. If "mfa_serial" is set, you
must also set the Session Option.AssumeRoleTokenProvider. The Session will fail
to load if the AssumeRoleTokenProvider is not specified.
sess := session.Must(session.NewSessionWithOptions(session.Options{
AssumeRoleTokenProvider: stscreds.StdinTokenProvider,
}))
To setup Assume Role outside of a session see the stscreds.AssumeRoleProvider
documentation.
Environment Variables
When a Session is created several environment variables can be set to adjust
how the SDK functions, and what configuration data it loads when creating
Sessions. All environment values are optional, but some values like credentials
require multiple of the values to set or the partial values will be ignored.
All environment variable values are strings unless otherwise noted.
Environment configuration values. If set both Access Key ID and Secret Access
Key must be provided. Session Token and optionally also be provided, but is
not required.
# Access Key ID
AWS_ACCESS_KEY_ID=AKID
AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
# Secret Access Key
AWS_SECRET_ACCESS_KEY=SECRET
AWS_SECRET_KEY=SECRET=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
# Session Token
AWS_SESSION_TOKEN=TOKEN
Region value will instruct the SDK where to make service API requests to. If is
not provided in the environment the region must be provided before a service
client request is made.
AWS_REGION=us-east-1
# AWS_DEFAULT_REGION is only read if AWS_SDK_LOAD_CONFIG is also set,
# and AWS_REGION is not also set.
AWS_DEFAULT_REGION=us-east-1
Profile name the SDK should load use when loading shared config from the
configuration files. If not provided "default" will be used as the profile name.
AWS_PROFILE=my_profile
# AWS_DEFAULT_PROFILE is only read if AWS_SDK_LOAD_CONFIG is also set,
# and AWS_PROFILE is not also set.
AWS_DEFAULT_PROFILE=my_profile
SDK load config instructs the SDK to load the shared config in addition to
shared credentials. This also expands the configuration loaded so the shared
credentials will have parity with the shared config file. This also enables
Region and Profile support for the AWS_DEFAULT_REGION and AWS_DEFAULT_PROFILE
env values as well.
AWS_SDK_LOAD_CONFIG=1
Custom Shared Config and Credential Files
Shared credentials file path can be set to instruct the SDK to use an alternative
file for the shared credentials. If not set the file will be loaded from
$HOME/.aws/credentials on Linux/Unix based systems, and
%USERPROFILE%\.aws\credentials on Windows.
AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
Shared config file path can be set to instruct the SDK to use an alternative
file for the shared config. If not set the file will be loaded from
$HOME/.aws/config on Linux/Unix based systems, and
%USERPROFILE%\.aws\config on Windows.
AWS_CONFIG_FILE=$HOME/my_shared_config
Custom CA Bundle
Path to a custom Credentials Authority (CA) bundle PEM file that the SDK
will use instead of the default system's root CA bundle. Use this only
if you want to replace the CA bundle the SDK uses for TLS requests.
AWS_CA_BUNDLE=$HOME/my_custom_ca_bundle
Enabling this option will attempt to merge the Transport into the SDK's HTTP
client. If the client's Transport is not a http.Transport an error will be
returned. If the Transport's TLS config is set this option will cause the SDK
to overwrite the Transport's TLS config's RootCAs value. If the CA bundle file
contains multiple certificates all of them will be loaded.
The Session option CustomCABundle is also available when creating sessions
to also enable this feature. CustomCABundle session option field has priority
over the AWS_CA_BUNDLE environment variable, and will be used if both are set.
Setting a custom HTTPClient in the aws.Config options will override this setting.
To use this option and custom HTTP client, the HTTP client needs to be provided
when creating the session. Not the service client.
Custom Client TLS Certificate
The SDK supports the environment and session option being configured with
Client TLS certificates that are sent as a part of the client's TLS handshake
for client authentication. If used, both Cert and Key values are required. If
one is missing, or either fail to load the contents of the file an error will
be returned.
HTTP Client's Transport concrete implementation must be a http.Transport
or creating the session will fail.
AWS_SDK_GO_CLIENT_TLS_KEY=$HOME/my_client_key
AWS_SDK_GO_CLIENT_TLS_CERT=$HOME/my_client_cert
This can also be configured via the session.Options ClientTLSCert and ClientTLSKey.
sess, err := session.NewSessionWithOptions(session.Options{
ClientTLSCert: myCertFile,
ClientTLSKey: myKeyFile,
})
Custom EC2 IMDS Endpoint
The endpoint of the EC2 IMDS client can be configured via the environment
variable, AWS_EC2_METADATA_SERVICE_ENDPOINT when creating the client with a
Session. See Options.EC2IMDSEndpoint for more details.
AWS_EC2_METADATA_SERVICE_ENDPOINT=http://169.254.169.254
If using an URL with an IPv6 address literal, the IPv6 address
component must be enclosed in square brackets.
AWS_EC2_METADATA_SERVICE_ENDPOINT=http://[::1]
The custom EC2 IMDS endpoint can also be specified via the Session options.
sess, err := session.NewSessionWithOptions(session.Options{
EC2MetadataEndpoint: "http://[::1]",
})
FIPS and DualStack Endpoints
The SDK can be configured to resolve an endpoint with certain capabilities such as FIPS and DualStack.
You can configure a FIPS endpoint using an environment variable, shared config ($HOME/.aws/config),
or programmatically.
To configure a FIPS endpoint set the environment variable set the AWS_USE_FIPS_ENDPOINT to true or false to enable
or disable FIPS endpoint resolution.
AWS_USE_FIPS_ENDPOINT=true
To configure a FIPS endpoint using shared config, set use_fips_endpoint to true or false to enable
or disable FIPS endpoint resolution.
[profile myprofile]
region=us-west-2
use_fips_endpoint=true
To configure a FIPS endpoint programmatically
// Option 1: Configure it on a session for all clients
sess, err := session.NewSessionWithOptions(session.Options{
UseFIPSEndpoint: endpoints.FIPSEndpointStateEnabled,
})
if err != nil {
// handle error
}
client := s3.New(sess)
// Option 2: Configure it per client
sess, err := session.NewSession()
if err != nil {
// handle error
}
client := s3.New(sess, &aws.Config{
UseFIPSEndpoint: endpoints.FIPSEndpointStateEnabled,
})
You can configure a DualStack endpoint using an environment variable, shared config ($HOME/.aws/config),
or programmatically.
To configure a DualStack endpoint set the environment variable set the AWS_USE_DUALSTACK_ENDPOINT to true or false to
enable or disable DualStack endpoint resolution.
AWS_USE_DUALSTACK_ENDPOINT=true
To configure a DualStack endpoint using shared config, set use_dualstack_endpoint to true or false to enable
or disable DualStack endpoint resolution.
[profile myprofile]
region=us-west-2
use_dualstack_endpoint=true
To configure a DualStack endpoint programmatically
// Option 1: Configure it on a session for all clients
sess, err := session.NewSessionWithOptions(session.Options{
UseDualStackEndpoint: endpoints.DualStackEndpointStateEnabled,
})
if err != nil {
// handle error
}
client := s3.New(sess)
// Option 2: Configure it per client
sess, err := session.NewSession()
if err != nil {
// handle error
}
client := s3.New(sess, &aws.Config{
UseDualStackEndpoint: endpoints.DualStackEndpointStateEnabled,
})
*/
package session

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package session
import (
"fmt"
"os"
"strconv"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/defaults"
"github.com/aws/aws-sdk-go/aws/endpoints"
)
// EnvProviderName provides a name of the provider when config is loaded from environment.
const EnvProviderName = "EnvConfigCredentials"
// envConfig is a collection of environment values the SDK will read
// setup config from. All environment values are optional. But some values
// such as credentials require multiple values to be complete or the values
// will be ignored.
type envConfig struct {
// Environment configuration values. If set both Access Key ID and Secret Access
// Key must be provided. Session Token and optionally also be provided, but is
// not required.
//
// # Access Key ID
// AWS_ACCESS_KEY_ID=AKID
// AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
//
// # Secret Access Key
// AWS_SECRET_ACCESS_KEY=SECRET
// AWS_SECRET_KEY=SECRET=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
//
// # Session Token
// AWS_SESSION_TOKEN=TOKEN
Creds credentials.Value
// Region value will instruct the SDK where to make service API requests to. If is
// not provided in the environment the region must be provided before a service
// client request is made.
//
// AWS_REGION=us-east-1
//
// # AWS_DEFAULT_REGION is only read if AWS_SDK_LOAD_CONFIG is also set,
// # and AWS_REGION is not also set.
// AWS_DEFAULT_REGION=us-east-1
Region string
// Profile name the SDK should load use when loading shared configuration from the
// shared configuration files. If not provided "default" will be used as the
// profile name.
//
// AWS_PROFILE=my_profile
//
// # AWS_DEFAULT_PROFILE is only read if AWS_SDK_LOAD_CONFIG is also set,
// # and AWS_PROFILE is not also set.
// AWS_DEFAULT_PROFILE=my_profile
Profile string
// SDK load config instructs the SDK to load the shared config in addition to
// shared credentials. This also expands the configuration loaded from the shared
// credentials to have parity with the shared config file. This also enables
// Region and Profile support for the AWS_DEFAULT_REGION and AWS_DEFAULT_PROFILE
// env values as well.
//
// AWS_SDK_LOAD_CONFIG=1
EnableSharedConfig bool
// Shared credentials file path can be set to instruct the SDK to use an alternate
// file for the shared credentials. If not set the file will be loaded from
// $HOME/.aws/credentials on Linux/Unix based systems, and
// %USERPROFILE%\.aws\credentials on Windows.
//
// AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
SharedCredentialsFile string
// Shared config file path can be set to instruct the SDK to use an alternate
// file for the shared config. If not set the file will be loaded from
// $HOME/.aws/config on Linux/Unix based systems, and
// %USERPROFILE%\.aws\config on Windows.
//
// AWS_CONFIG_FILE=$HOME/my_shared_config
SharedConfigFile string
// Sets the path to a custom Credentials Authority (CA) Bundle PEM file
// that the SDK will use instead of the system's root CA bundle.
// Only use this if you want to configure the SDK to use a custom set
// of CAs.
//
// Enabling this option will attempt to merge the Transport
// into the SDK's HTTP client. If the client's Transport is
// not a http.Transport an error will be returned. If the
// Transport's TLS config is set this option will cause the
// SDK to overwrite the Transport's TLS config's RootCAs value.
//
// Setting a custom HTTPClient in the aws.Config options will override this setting.
// To use this option and custom HTTP client, the HTTP client needs to be provided
// when creating the session. Not the service client.
//
// AWS_CA_BUNDLE=$HOME/my_custom_ca_bundle
CustomCABundle string
// Sets the TLC client certificate that should be used by the SDK's HTTP transport
// when making requests. The certificate must be paired with a TLS client key file.
//
// AWS_SDK_GO_CLIENT_TLS_CERT=$HOME/my_client_cert
ClientTLSCert string
// Sets the TLC client key that should be used by the SDK's HTTP transport
// when making requests. The key must be paired with a TLS client certificate file.
//
// AWS_SDK_GO_CLIENT_TLS_KEY=$HOME/my_client_key
ClientTLSKey string
csmEnabled string
CSMEnabled *bool
CSMPort string
CSMHost string
CSMClientID string
// Enables endpoint discovery via environment variables.
//
// AWS_ENABLE_ENDPOINT_DISCOVERY=true
EnableEndpointDiscovery *bool
enableEndpointDiscovery string
// Specifies the WebIdentity token the SDK should use to assume a role
// with.
//
// AWS_WEB_IDENTITY_TOKEN_FILE=file_path
WebIdentityTokenFilePath string
// Specifies the IAM role arn to use when assuming an role.
//
// AWS_ROLE_ARN=role_arn
RoleARN string
// Specifies the IAM role session name to use when assuming a role.
//
// AWS_ROLE_SESSION_NAME=session_name
RoleSessionName string
// Specifies the STS Regional Endpoint flag for the SDK to resolve the endpoint
// for a service.
//
// AWS_STS_REGIONAL_ENDPOINTS=regional
// This can take value as `regional` or `legacy`
STSRegionalEndpoint endpoints.STSRegionalEndpoint
// Specifies the S3 Regional Endpoint flag for the SDK to resolve the
// endpoint for a service.
//
// AWS_S3_US_EAST_1_REGIONAL_ENDPOINT=regional
// This can take value as `regional` or `legacy`
S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
// Specifies if the S3 service should allow ARNs to direct the region
// the client's requests are sent to.
//
// AWS_S3_USE_ARN_REGION=true
S3UseARNRegion bool
// Specifies the EC2 Instance Metadata Service endpoint to use. If specified it overrides EC2IMDSEndpointMode.
//
// AWS_EC2_METADATA_SERVICE_ENDPOINT=http://[::1]
EC2IMDSEndpoint string
// Specifies the EC2 Instance Metadata Service default endpoint selection mode (IPv4 or IPv6)
//
// AWS_EC2_METADATA_SERVICE_ENDPOINT_MODE=IPv6
EC2IMDSEndpointMode endpoints.EC2IMDSEndpointModeState
// Specifies that SDK clients must resolve a dual-stack endpoint for
// services.
//
// AWS_USE_DUALSTACK_ENDPOINT=true
UseDualStackEndpoint endpoints.DualStackEndpointState
// Specifies that SDK clients must resolve a FIPS endpoint for
// services.
//
// AWS_USE_FIPS_ENDPOINT=true
UseFIPSEndpoint endpoints.FIPSEndpointState
}
var (
csmEnabledEnvKey = []string{
"AWS_CSM_ENABLED",
}
csmHostEnvKey = []string{
"AWS_CSM_HOST",
}
csmPortEnvKey = []string{
"AWS_CSM_PORT",
}
csmClientIDEnvKey = []string{
"AWS_CSM_CLIENT_ID",
}
credAccessEnvKey = []string{
"AWS_ACCESS_KEY_ID",
"AWS_ACCESS_KEY",
}
credSecretEnvKey = []string{
"AWS_SECRET_ACCESS_KEY",
"AWS_SECRET_KEY",
}
credSessionEnvKey = []string{
"AWS_SESSION_TOKEN",
}
enableEndpointDiscoveryEnvKey = []string{
"AWS_ENABLE_ENDPOINT_DISCOVERY",
}
regionEnvKeys = []string{
"AWS_REGION",
"AWS_DEFAULT_REGION", // Only read if AWS_SDK_LOAD_CONFIG is also set
}
profileEnvKeys = []string{
"AWS_PROFILE",
"AWS_DEFAULT_PROFILE", // Only read if AWS_SDK_LOAD_CONFIG is also set
}
sharedCredsFileEnvKey = []string{
"AWS_SHARED_CREDENTIALS_FILE",
}
sharedConfigFileEnvKey = []string{
"AWS_CONFIG_FILE",
}
webIdentityTokenFilePathEnvKey = []string{
"AWS_WEB_IDENTITY_TOKEN_FILE",
}
roleARNEnvKey = []string{
"AWS_ROLE_ARN",
}
roleSessionNameEnvKey = []string{
"AWS_ROLE_SESSION_NAME",
}
stsRegionalEndpointKey = []string{
"AWS_STS_REGIONAL_ENDPOINTS",
}
s3UsEast1RegionalEndpoint = []string{
"AWS_S3_US_EAST_1_REGIONAL_ENDPOINT",
}
s3UseARNRegionEnvKey = []string{
"AWS_S3_USE_ARN_REGION",
}
ec2IMDSEndpointEnvKey = []string{
"AWS_EC2_METADATA_SERVICE_ENDPOINT",
}
ec2IMDSEndpointModeEnvKey = []string{
"AWS_EC2_METADATA_SERVICE_ENDPOINT_MODE",
}
useCABundleKey = []string{
"AWS_CA_BUNDLE",
}
useClientTLSCert = []string{
"AWS_SDK_GO_CLIENT_TLS_CERT",
}
useClientTLSKey = []string{
"AWS_SDK_GO_CLIENT_TLS_KEY",
}
awsUseDualStackEndpoint = []string{
"AWS_USE_DUALSTACK_ENDPOINT",
}
awsUseFIPSEndpoint = []string{
"AWS_USE_FIPS_ENDPOINT",
}
)
// loadEnvConfig retrieves the SDK's environment configuration.
// See `envConfig` for the values that will be retrieved.
//
// If the environment variable `AWS_SDK_LOAD_CONFIG` is set to a truthy value
// the shared SDK config will be loaded in addition to the SDK's specific
// configuration values.
func loadEnvConfig() (envConfig, error) {
enableSharedConfig, _ := strconv.ParseBool(os.Getenv("AWS_SDK_LOAD_CONFIG"))
return envConfigLoad(enableSharedConfig)
}
// loadEnvSharedConfig retrieves the SDK's environment configuration, and the
// SDK shared config. See `envConfig` for the values that will be retrieved.
//
// Loads the shared configuration in addition to the SDK's specific configuration.
// This will load the same values as `loadEnvConfig` if the `AWS_SDK_LOAD_CONFIG`
// environment variable is set.
func loadSharedEnvConfig() (envConfig, error) {
return envConfigLoad(true)
}
func envConfigLoad(enableSharedConfig bool) (envConfig, error) {
cfg := envConfig{}
cfg.EnableSharedConfig = enableSharedConfig
// Static environment credentials
var creds credentials.Value
setFromEnvVal(&creds.AccessKeyID, credAccessEnvKey)
setFromEnvVal(&creds.SecretAccessKey, credSecretEnvKey)
setFromEnvVal(&creds.SessionToken, credSessionEnvKey)
if creds.HasKeys() {
// Require logical grouping of credentials
creds.ProviderName = EnvProviderName
cfg.Creds = creds
}
// Role Metadata
setFromEnvVal(&cfg.RoleARN, roleARNEnvKey)
setFromEnvVal(&cfg.RoleSessionName, roleSessionNameEnvKey)
// Web identity environment variables
setFromEnvVal(&cfg.WebIdentityTokenFilePath, webIdentityTokenFilePathEnvKey)
// CSM environment variables
setFromEnvVal(&cfg.csmEnabled, csmEnabledEnvKey)
setFromEnvVal(&cfg.CSMHost, csmHostEnvKey)
setFromEnvVal(&cfg.CSMPort, csmPortEnvKey)
setFromEnvVal(&cfg.CSMClientID, csmClientIDEnvKey)
if len(cfg.csmEnabled) != 0 {
v, _ := strconv.ParseBool(cfg.csmEnabled)
cfg.CSMEnabled = &v
}
regionKeys := regionEnvKeys
profileKeys := profileEnvKeys
if !cfg.EnableSharedConfig {
regionKeys = regionKeys[:1]
profileKeys = profileKeys[:1]
}
setFromEnvVal(&cfg.Region, regionKeys)
setFromEnvVal(&cfg.Profile, profileKeys)
// endpoint discovery is in reference to it being enabled.
setFromEnvVal(&cfg.enableEndpointDiscovery, enableEndpointDiscoveryEnvKey)
if len(cfg.enableEndpointDiscovery) > 0 {
cfg.EnableEndpointDiscovery = aws.Bool(cfg.enableEndpointDiscovery != "false")
}
setFromEnvVal(&cfg.SharedCredentialsFile, sharedCredsFileEnvKey)
setFromEnvVal(&cfg.SharedConfigFile, sharedConfigFileEnvKey)
if len(cfg.SharedCredentialsFile) == 0 {
cfg.SharedCredentialsFile = defaults.SharedCredentialsFilename()
}
if len(cfg.SharedConfigFile) == 0 {
cfg.SharedConfigFile = defaults.SharedConfigFilename()
}
setFromEnvVal(&cfg.CustomCABundle, useCABundleKey)
setFromEnvVal(&cfg.ClientTLSCert, useClientTLSCert)
setFromEnvVal(&cfg.ClientTLSKey, useClientTLSKey)
var err error
// STS Regional Endpoint variable
for _, k := range stsRegionalEndpointKey {
if v := os.Getenv(k); len(v) != 0 {
cfg.STSRegionalEndpoint, err = endpoints.GetSTSRegionalEndpoint(v)
if err != nil {
return cfg, fmt.Errorf("failed to load, %v from env config, %v", k, err)
}
}
}
// S3 Regional Endpoint variable
for _, k := range s3UsEast1RegionalEndpoint {
if v := os.Getenv(k); len(v) != 0 {
cfg.S3UsEast1RegionalEndpoint, err = endpoints.GetS3UsEast1RegionalEndpoint(v)
if err != nil {
return cfg, fmt.Errorf("failed to load, %v from env config, %v", k, err)
}
}
}
var s3UseARNRegion string
setFromEnvVal(&s3UseARNRegion, s3UseARNRegionEnvKey)
if len(s3UseARNRegion) != 0 {
switch {
case strings.EqualFold(s3UseARNRegion, "false"):
cfg.S3UseARNRegion = false
case strings.EqualFold(s3UseARNRegion, "true"):
cfg.S3UseARNRegion = true
default:
return envConfig{}, fmt.Errorf(
"invalid value for environment variable, %s=%s, need true or false",
s3UseARNRegionEnvKey[0], s3UseARNRegion)
}
}
setFromEnvVal(&cfg.EC2IMDSEndpoint, ec2IMDSEndpointEnvKey)
if err := setEC2IMDSEndpointMode(&cfg.EC2IMDSEndpointMode, ec2IMDSEndpointModeEnvKey); err != nil {
return envConfig{}, err
}
if err := setUseDualStackEndpointFromEnvVal(&cfg.UseDualStackEndpoint, awsUseDualStackEndpoint); err != nil {
return cfg, err
}
if err := setUseFIPSEndpointFromEnvVal(&cfg.UseFIPSEndpoint, awsUseFIPSEndpoint); err != nil {
return cfg, err
}
return cfg, nil
}
func setFromEnvVal(dst *string, keys []string) {
for _, k := range keys {
if v := os.Getenv(k); len(v) != 0 {
*dst = v
break
}
}
}
func setEC2IMDSEndpointMode(mode *endpoints.EC2IMDSEndpointModeState, keys []string) error {
for _, k := range keys {
value := os.Getenv(k)
if len(value) == 0 {
continue
}
if err := mode.SetFromString(value); err != nil {
return fmt.Errorf("invalid value for environment variable, %s=%s, %v", k, value, err)
}
return nil
}
return nil
}
func setUseDualStackEndpointFromEnvVal(dst *endpoints.DualStackEndpointState, keys []string) error {
for _, k := range keys {
value := os.Getenv(k)
if len(value) == 0 {
continue // skip if empty
}
switch {
case strings.EqualFold(value, "true"):
*dst = endpoints.DualStackEndpointStateEnabled
case strings.EqualFold(value, "false"):
*dst = endpoints.DualStackEndpointStateDisabled
default:
return fmt.Errorf(
"invalid value for environment variable, %s=%s, need true, false",
k, value)
}
}
return nil
}
func setUseFIPSEndpointFromEnvVal(dst *endpoints.FIPSEndpointState, keys []string) error {
for _, k := range keys {
value := os.Getenv(k)
if len(value) == 0 {
continue // skip if empty
}
switch {
case strings.EqualFold(value, "true"):
*dst = endpoints.FIPSEndpointStateEnabled
case strings.EqualFold(value, "false"):
*dst = endpoints.FIPSEndpointStateDisabled
default:
return fmt.Errorf(
"invalid value for environment variable, %s=%s, need true, false",
k, value)
}
}
return nil
}

997
vendor/github.com/aws/aws-sdk-go/aws/session/session.go generated vendored Normal file
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@ -0,0 +1,997 @@
package session
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/corehandlers"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/csm"
"github.com/aws/aws-sdk-go/aws/defaults"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/aws/aws-sdk-go/aws/request"
)
const (
// ErrCodeSharedConfig represents an error that occurs in the shared
// configuration logic
ErrCodeSharedConfig = "SharedConfigErr"
// ErrCodeLoadCustomCABundle error code for unable to load custom CA bundle.
ErrCodeLoadCustomCABundle = "LoadCustomCABundleError"
// ErrCodeLoadClientTLSCert error code for unable to load client TLS
// certificate or key
ErrCodeLoadClientTLSCert = "LoadClientTLSCertError"
)
// ErrSharedConfigSourceCollision will be returned if a section contains both
// source_profile and credential_source
var ErrSharedConfigSourceCollision = awserr.New(ErrCodeSharedConfig, "only one credential type may be specified per profile: source profile, credential source, credential process, web identity token", nil)
// ErrSharedConfigECSContainerEnvVarEmpty will be returned if the environment
// variables are empty and Environment was set as the credential source
var ErrSharedConfigECSContainerEnvVarEmpty = awserr.New(ErrCodeSharedConfig, "EcsContainer was specified as the credential_source, but 'AWS_CONTAINER_CREDENTIALS_RELATIVE_URI' was not set", nil)
// ErrSharedConfigInvalidCredSource will be returned if an invalid credential source was provided
var ErrSharedConfigInvalidCredSource = awserr.New(ErrCodeSharedConfig, "credential source values must be EcsContainer, Ec2InstanceMetadata, or Environment", nil)
// A Session provides a central location to create service clients from and
// store configurations and request handlers for those services.
//
// Sessions are safe to create service clients concurrently, but it is not safe
// to mutate the Session concurrently.
//
// The Session satisfies the service client's client.ConfigProvider.
type Session struct {
Config *aws.Config
Handlers request.Handlers
options Options
}
// New creates a new instance of the handlers merging in the provided configs
// on top of the SDK's default configurations. Once the Session is created it
// can be mutated to modify the Config or Handlers. The Session is safe to be
// read concurrently, but it should not be written to concurrently.
//
// If the AWS_SDK_LOAD_CONFIG environment is set to a truthy value, the New
// method could now encounter an error when loading the configuration. When
// The environment variable is set, and an error occurs, New will return a
// session that will fail all requests reporting the error that occurred while
// loading the session. Use NewSession to get the error when creating the
// session.
//
// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
// the shared config file (~/.aws/config) will also be loaded, in addition to
// the shared credentials file (~/.aws/credentials). Values set in both the
// shared config, and shared credentials will be taken from the shared
// credentials file.
//
// Deprecated: Use NewSession functions to create sessions instead. NewSession
// has the same functionality as New except an error can be returned when the
// func is called instead of waiting to receive an error until a request is made.
func New(cfgs ...*aws.Config) *Session {
// load initial config from environment
envCfg, envErr := loadEnvConfig()
if envCfg.EnableSharedConfig {
var cfg aws.Config
cfg.MergeIn(cfgs...)
s, err := NewSessionWithOptions(Options{
Config: cfg,
SharedConfigState: SharedConfigEnable,
})
if err != nil {
// Old session.New expected all errors to be discovered when
// a request is made, and would report the errors then. This
// needs to be replicated if an error occurs while creating
// the session.
msg := "failed to create session with AWS_SDK_LOAD_CONFIG enabled. " +
"Use session.NewSession to handle errors occurring during session creation."
// Session creation failed, need to report the error and prevent
// any requests from succeeding.
s = &Session{Config: defaults.Config()}
s.logDeprecatedNewSessionError(msg, err, cfgs)
}
return s
}
s := deprecatedNewSession(envCfg, cfgs...)
if envErr != nil {
msg := "failed to load env config"
s.logDeprecatedNewSessionError(msg, envErr, cfgs)
}
if csmCfg, err := loadCSMConfig(envCfg, []string{}); err != nil {
if l := s.Config.Logger; l != nil {
l.Log(fmt.Sprintf("ERROR: failed to load CSM configuration, %v", err))
}
} else if csmCfg.Enabled {
err := enableCSM(&s.Handlers, csmCfg, s.Config.Logger)
if err != nil {
msg := "failed to enable CSM"
s.logDeprecatedNewSessionError(msg, err, cfgs)
}
}
return s
}
// NewSession returns a new Session created from SDK defaults, config files,
// environment, and user provided config files. Once the Session is created
// it can be mutated to modify the Config or Handlers. The Session is safe to
// be read concurrently, but it should not be written to concurrently.
//
// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
// the shared config file (~/.aws/config) will also be loaded in addition to
// the shared credentials file (~/.aws/credentials). Values set in both the
// shared config, and shared credentials will be taken from the shared
// credentials file. Enabling the Shared Config will also allow the Session
// to be built with retrieving credentials with AssumeRole set in the config.
//
// See the NewSessionWithOptions func for information on how to override or
// control through code how the Session will be created, such as specifying the
// config profile, and controlling if shared config is enabled or not.
func NewSession(cfgs ...*aws.Config) (*Session, error) {
opts := Options{}
opts.Config.MergeIn(cfgs...)
return NewSessionWithOptions(opts)
}
// SharedConfigState provides the ability to optionally override the state
// of the session's creation based on the shared config being enabled or
// disabled.
type SharedConfigState int
const (
// SharedConfigStateFromEnv does not override any state of the
// AWS_SDK_LOAD_CONFIG env var. It is the default value of the
// SharedConfigState type.
SharedConfigStateFromEnv SharedConfigState = iota
// SharedConfigDisable overrides the AWS_SDK_LOAD_CONFIG env var value
// and disables the shared config functionality.
SharedConfigDisable
// SharedConfigEnable overrides the AWS_SDK_LOAD_CONFIG env var value
// and enables the shared config functionality.
SharedConfigEnable
)
// Options provides the means to control how a Session is created and what
// configuration values will be loaded.
type Options struct {
// Provides config values for the SDK to use when creating service clients
// and making API requests to services. Any value set in with this field
// will override the associated value provided by the SDK defaults,
// environment or config files where relevant.
//
// If not set, configuration values from from SDK defaults, environment,
// config will be used.
Config aws.Config
// Overrides the config profile the Session should be created from. If not
// set the value of the environment variable will be loaded (AWS_PROFILE,
// or AWS_DEFAULT_PROFILE if the Shared Config is enabled).
//
// If not set and environment variables are not set the "default"
// (DefaultSharedConfigProfile) will be used as the profile to load the
// session config from.
Profile string
// Instructs how the Session will be created based on the AWS_SDK_LOAD_CONFIG
// environment variable. By default a Session will be created using the
// value provided by the AWS_SDK_LOAD_CONFIG environment variable.
//
// Setting this value to SharedConfigEnable or SharedConfigDisable
// will allow you to override the AWS_SDK_LOAD_CONFIG environment variable
// and enable or disable the shared config functionality.
SharedConfigState SharedConfigState
// Ordered list of files the session will load configuration from.
// It will override environment variable AWS_SHARED_CREDENTIALS_FILE, AWS_CONFIG_FILE.
SharedConfigFiles []string
// When the SDK's shared config is configured to assume a role with MFA
// this option is required in order to provide the mechanism that will
// retrieve the MFA token. There is no default value for this field. If
// it is not set an error will be returned when creating the session.
//
// This token provider will be called when ever the assumed role's
// credentials need to be refreshed. Within the context of service clients
// all sharing the same session the SDK will ensure calls to the token
// provider are atomic. When sharing a token provider across multiple
// sessions additional synchronization logic is needed to ensure the
// token providers do not introduce race conditions. It is recommend to
// share the session where possible.
//
// stscreds.StdinTokenProvider is a basic implementation that will prompt
// from stdin for the MFA token code.
//
// This field is only used if the shared configuration is enabled, and
// the config enables assume role with MFA via the mfa_serial field.
AssumeRoleTokenProvider func() (string, error)
// When the SDK's shared config is configured to assume a role this option
// may be provided to set the expiry duration of the STS credentials.
// Defaults to 15 minutes if not set as documented in the
// stscreds.AssumeRoleProvider.
AssumeRoleDuration time.Duration
// Reader for a custom Credentials Authority (CA) bundle in PEM format that
// the SDK will use instead of the default system's root CA bundle. Use this
// only if you want to replace the CA bundle the SDK uses for TLS requests.
//
// HTTP Client's Transport concrete implementation must be a http.Transport
// or creating the session will fail.
//
// If the Transport's TLS config is set this option will cause the SDK
// to overwrite the Transport's TLS config's RootCAs value. If the CA
// bundle reader contains multiple certificates all of them will be loaded.
//
// Can also be specified via the environment variable:
//
// AWS_CA_BUNDLE=$HOME/ca_bundle
//
// Can also be specified via the shared config field:
//
// ca_bundle = $HOME/ca_bundle
CustomCABundle io.Reader
// Reader for the TLC client certificate that should be used by the SDK's
// HTTP transport when making requests. The certificate must be paired with
// a TLS client key file. Will be ignored if both are not provided.
//
// HTTP Client's Transport concrete implementation must be a http.Transport
// or creating the session will fail.
//
// Can also be specified via the environment variable:
//
// AWS_SDK_GO_CLIENT_TLS_CERT=$HOME/my_client_cert
ClientTLSCert io.Reader
// Reader for the TLC client key that should be used by the SDK's HTTP
// transport when making requests. The key must be paired with a TLS client
// certificate file. Will be ignored if both are not provided.
//
// HTTP Client's Transport concrete implementation must be a http.Transport
// or creating the session will fail.
//
// Can also be specified via the environment variable:
//
// AWS_SDK_GO_CLIENT_TLS_KEY=$HOME/my_client_key
ClientTLSKey io.Reader
// The handlers that the session and all API clients will be created with.
// This must be a complete set of handlers. Use the defaults.Handlers()
// function to initialize this value before changing the handlers to be
// used by the SDK.
Handlers request.Handlers
// Allows specifying a custom endpoint to be used by the EC2 IMDS client
// when making requests to the EC2 IMDS API. The endpoint value should
// include the URI scheme. If the scheme is not present it will be defaulted to http.
//
// If unset, will the EC2 IMDS client will use its default endpoint.
//
// Can also be specified via the environment variable,
// AWS_EC2_METADATA_SERVICE_ENDPOINT.
//
// AWS_EC2_METADATA_SERVICE_ENDPOINT=http://169.254.169.254
//
// If using an URL with an IPv6 address literal, the IPv6 address
// component must be enclosed in square brackets.
//
// AWS_EC2_METADATA_SERVICE_ENDPOINT=http://[::1]
EC2IMDSEndpoint string
// Specifies the EC2 Instance Metadata Service default endpoint selection mode (IPv4 or IPv6)
//
// AWS_EC2_METADATA_SERVICE_ENDPOINT_MODE=IPv6
EC2IMDSEndpointMode endpoints.EC2IMDSEndpointModeState
// Specifies options for creating credential providers.
// These are only used if the aws.Config does not already
// include credentials.
CredentialsProviderOptions *CredentialsProviderOptions
}
// NewSessionWithOptions returns a new Session created from SDK defaults, config files,
// environment, and user provided config files. This func uses the Options
// values to configure how the Session is created.
//
// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
// the shared config file (~/.aws/config) will also be loaded in addition to
// the shared credentials file (~/.aws/credentials). Values set in both the
// shared config, and shared credentials will be taken from the shared
// credentials file. Enabling the Shared Config will also allow the Session
// to be built with retrieving credentials with AssumeRole set in the config.
//
// // Equivalent to session.New
// sess := session.Must(session.NewSessionWithOptions(session.Options{}))
//
// // Specify profile to load for the session's config
// sess := session.Must(session.NewSessionWithOptions(session.Options{
// Profile: "profile_name",
// }))
//
// // Specify profile for config and region for requests
// sess := session.Must(session.NewSessionWithOptions(session.Options{
// Config: aws.Config{Region: aws.String("us-east-1")},
// Profile: "profile_name",
// }))
//
// // Force enable Shared Config support
// sess := session.Must(session.NewSessionWithOptions(session.Options{
// SharedConfigState: session.SharedConfigEnable,
// }))
func NewSessionWithOptions(opts Options) (*Session, error) {
var envCfg envConfig
var err error
if opts.SharedConfigState == SharedConfigEnable {
envCfg, err = loadSharedEnvConfig()
if err != nil {
return nil, fmt.Errorf("failed to load shared config, %v", err)
}
} else {
envCfg, err = loadEnvConfig()
if err != nil {
return nil, fmt.Errorf("failed to load environment config, %v", err)
}
}
if len(opts.Profile) != 0 {
envCfg.Profile = opts.Profile
}
switch opts.SharedConfigState {
case SharedConfigDisable:
envCfg.EnableSharedConfig = false
case SharedConfigEnable:
envCfg.EnableSharedConfig = true
}
return newSession(opts, envCfg, &opts.Config)
}
// Must is a helper function to ensure the Session is valid and there was no
// error when calling a NewSession function.
//
// This helper is intended to be used in variable initialization to load the
// Session and configuration at startup. Such as:
//
// var sess = session.Must(session.NewSession())
func Must(sess *Session, err error) *Session {
if err != nil {
panic(err)
}
return sess
}
// Wraps the endpoint resolver with a resolver that will return a custom
// endpoint for EC2 IMDS.
func wrapEC2IMDSEndpoint(resolver endpoints.Resolver, endpoint string, mode endpoints.EC2IMDSEndpointModeState) endpoints.Resolver {
return endpoints.ResolverFunc(
func(service, region string, opts ...func(*endpoints.Options)) (
endpoints.ResolvedEndpoint, error,
) {
if service == ec2MetadataServiceID && len(endpoint) > 0 {
return endpoints.ResolvedEndpoint{
URL: endpoint,
SigningName: ec2MetadataServiceID,
SigningRegion: region,
}, nil
} else if service == ec2MetadataServiceID {
opts = append(opts, func(o *endpoints.Options) {
o.EC2MetadataEndpointMode = mode
})
}
return resolver.EndpointFor(service, region, opts...)
})
}
func deprecatedNewSession(envCfg envConfig, cfgs ...*aws.Config) *Session {
cfg := defaults.Config()
handlers := defaults.Handlers()
// Apply the passed in configs so the configuration can be applied to the
// default credential chain
cfg.MergeIn(cfgs...)
if cfg.EndpointResolver == nil {
// An endpoint resolver is required for a session to be able to provide
// endpoints for service client configurations.
cfg.EndpointResolver = endpoints.DefaultResolver()
}
if !(len(envCfg.EC2IMDSEndpoint) == 0 && envCfg.EC2IMDSEndpointMode == endpoints.EC2IMDSEndpointModeStateUnset) {
cfg.EndpointResolver = wrapEC2IMDSEndpoint(cfg.EndpointResolver, envCfg.EC2IMDSEndpoint, envCfg.EC2IMDSEndpointMode)
}
cfg.Credentials = defaults.CredChain(cfg, handlers)
// Reapply any passed in configs to override credentials if set
cfg.MergeIn(cfgs...)
s := &Session{
Config: cfg,
Handlers: handlers,
options: Options{
EC2IMDSEndpoint: envCfg.EC2IMDSEndpoint,
},
}
initHandlers(s)
return s
}
func enableCSM(handlers *request.Handlers, cfg csmConfig, logger aws.Logger) error {
if logger != nil {
logger.Log("Enabling CSM")
}
r, err := csm.Start(cfg.ClientID, csm.AddressWithDefaults(cfg.Host, cfg.Port))
if err != nil {
return err
}
r.InjectHandlers(handlers)
return nil
}
func newSession(opts Options, envCfg envConfig, cfgs ...*aws.Config) (*Session, error) {
cfg := defaults.Config()
handlers := opts.Handlers
if handlers.IsEmpty() {
handlers = defaults.Handlers()
}
// Get a merged version of the user provided config to determine if
// credentials were.
userCfg := &aws.Config{}
userCfg.MergeIn(cfgs...)
cfg.MergeIn(userCfg)
// Ordered config files will be loaded in with later files overwriting
// previous config file values.
var cfgFiles []string
if opts.SharedConfigFiles != nil {
cfgFiles = opts.SharedConfigFiles
} else {
cfgFiles = []string{envCfg.SharedConfigFile, envCfg.SharedCredentialsFile}
if !envCfg.EnableSharedConfig {
// The shared config file (~/.aws/config) is only loaded if instructed
// to load via the envConfig.EnableSharedConfig (AWS_SDK_LOAD_CONFIG).
cfgFiles = cfgFiles[1:]
}
}
// Load additional config from file(s)
sharedCfg, err := loadSharedConfig(envCfg.Profile, cfgFiles, envCfg.EnableSharedConfig)
if err != nil {
if len(envCfg.Profile) == 0 && !envCfg.EnableSharedConfig && (envCfg.Creds.HasKeys() || userCfg.Credentials != nil) {
// Special case where the user has not explicitly specified an AWS_PROFILE,
// or session.Options.profile, shared config is not enabled, and the
// environment has credentials, allow the shared config file to fail to
// load since the user has already provided credentials, and nothing else
// is required to be read file. Github(aws/aws-sdk-go#2455)
} else if _, ok := err.(SharedConfigProfileNotExistsError); !ok {
return nil, err
}
}
if err := mergeConfigSrcs(cfg, userCfg, envCfg, sharedCfg, handlers, opts); err != nil {
return nil, err
}
if err := setTLSOptions(&opts, cfg, envCfg, sharedCfg); err != nil {
return nil, err
}
s := &Session{
Config: cfg,
Handlers: handlers,
options: opts,
}
initHandlers(s)
if csmCfg, err := loadCSMConfig(envCfg, cfgFiles); err != nil {
if l := s.Config.Logger; l != nil {
l.Log(fmt.Sprintf("ERROR: failed to load CSM configuration, %v", err))
}
} else if csmCfg.Enabled {
err = enableCSM(&s.Handlers, csmCfg, s.Config.Logger)
if err != nil {
return nil, err
}
}
return s, nil
}
type csmConfig struct {
Enabled bool
Host string
Port string
ClientID string
}
var csmProfileName = "aws_csm"
func loadCSMConfig(envCfg envConfig, cfgFiles []string) (csmConfig, error) {
if envCfg.CSMEnabled != nil {
if *envCfg.CSMEnabled {
return csmConfig{
Enabled: true,
ClientID: envCfg.CSMClientID,
Host: envCfg.CSMHost,
Port: envCfg.CSMPort,
}, nil
}
return csmConfig{}, nil
}
sharedCfg, err := loadSharedConfig(csmProfileName, cfgFiles, false)
if err != nil {
if _, ok := err.(SharedConfigProfileNotExistsError); !ok {
return csmConfig{}, err
}
}
if sharedCfg.CSMEnabled != nil && *sharedCfg.CSMEnabled == true {
return csmConfig{
Enabled: true,
ClientID: sharedCfg.CSMClientID,
Host: sharedCfg.CSMHost,
Port: sharedCfg.CSMPort,
}, nil
}
return csmConfig{}, nil
}
func setTLSOptions(opts *Options, cfg *aws.Config, envCfg envConfig, sharedCfg sharedConfig) error {
// CA Bundle can be specified in both environment variable shared config file.
var caBundleFilename = envCfg.CustomCABundle
if len(caBundleFilename) == 0 {
caBundleFilename = sharedCfg.CustomCABundle
}
// Only use environment value if session option is not provided.
customTLSOptions := map[string]struct {
filename string
field *io.Reader
errCode string
}{
"custom CA bundle PEM": {filename: caBundleFilename, field: &opts.CustomCABundle, errCode: ErrCodeLoadCustomCABundle},
"custom client TLS cert": {filename: envCfg.ClientTLSCert, field: &opts.ClientTLSCert, errCode: ErrCodeLoadClientTLSCert},
"custom client TLS key": {filename: envCfg.ClientTLSKey, field: &opts.ClientTLSKey, errCode: ErrCodeLoadClientTLSCert},
}
for name, v := range customTLSOptions {
if len(v.filename) != 0 && *v.field == nil {
f, err := os.Open(v.filename)
if err != nil {
return awserr.New(v.errCode, fmt.Sprintf("failed to open %s file", name), err)
}
defer f.Close()
*v.field = f
}
}
// Setup HTTP client with custom cert bundle if enabled
if opts.CustomCABundle != nil {
if err := loadCustomCABundle(cfg.HTTPClient, opts.CustomCABundle); err != nil {
return err
}
}
// Setup HTTP client TLS certificate and key for client TLS authentication.
if opts.ClientTLSCert != nil && opts.ClientTLSKey != nil {
if err := loadClientTLSCert(cfg.HTTPClient, opts.ClientTLSCert, opts.ClientTLSKey); err != nil {
return err
}
} else if opts.ClientTLSCert == nil && opts.ClientTLSKey == nil {
// Do nothing if neither values are available.
} else {
return awserr.New(ErrCodeLoadClientTLSCert,
fmt.Sprintf("client TLS cert(%t) and key(%t) must both be provided",
opts.ClientTLSCert != nil, opts.ClientTLSKey != nil), nil)
}
return nil
}
func getHTTPTransport(client *http.Client) (*http.Transport, error) {
var t *http.Transport
switch v := client.Transport.(type) {
case *http.Transport:
t = v
default:
if client.Transport != nil {
return nil, fmt.Errorf("unsupported transport, %T", client.Transport)
}
}
if t == nil {
// Nil transport implies `http.DefaultTransport` should be used. Since
// the SDK cannot modify, nor copy the `DefaultTransport` specifying
// the values the next closest behavior.
t = getCustomTransport()
}
return t, nil
}
func loadCustomCABundle(client *http.Client, bundle io.Reader) error {
t, err := getHTTPTransport(client)
if err != nil {
return awserr.New(ErrCodeLoadCustomCABundle,
"unable to load custom CA bundle, HTTPClient's transport unsupported type", err)
}
p, err := loadCertPool(bundle)
if err != nil {
return err
}
if t.TLSClientConfig == nil {
t.TLSClientConfig = &tls.Config{}
}
t.TLSClientConfig.RootCAs = p
client.Transport = t
return nil
}
func loadCertPool(r io.Reader) (*x509.CertPool, error) {
b, err := ioutil.ReadAll(r)
if err != nil {
return nil, awserr.New(ErrCodeLoadCustomCABundle,
"failed to read custom CA bundle PEM file", err)
}
p := x509.NewCertPool()
if !p.AppendCertsFromPEM(b) {
return nil, awserr.New(ErrCodeLoadCustomCABundle,
"failed to load custom CA bundle PEM file", err)
}
return p, nil
}
func loadClientTLSCert(client *http.Client, certFile, keyFile io.Reader) error {
t, err := getHTTPTransport(client)
if err != nil {
return awserr.New(ErrCodeLoadClientTLSCert,
"unable to get usable HTTP transport from client", err)
}
cert, err := ioutil.ReadAll(certFile)
if err != nil {
return awserr.New(ErrCodeLoadClientTLSCert,
"unable to get read client TLS cert file", err)
}
key, err := ioutil.ReadAll(keyFile)
if err != nil {
return awserr.New(ErrCodeLoadClientTLSCert,
"unable to get read client TLS key file", err)
}
clientCert, err := tls.X509KeyPair(cert, key)
if err != nil {
return awserr.New(ErrCodeLoadClientTLSCert,
"unable to load x509 key pair from client cert", err)
}
tlsCfg := t.TLSClientConfig
if tlsCfg == nil {
tlsCfg = &tls.Config{}
}
tlsCfg.Certificates = append(tlsCfg.Certificates, clientCert)
t.TLSClientConfig = tlsCfg
client.Transport = t
return nil
}
func mergeConfigSrcs(cfg, userCfg *aws.Config,
envCfg envConfig, sharedCfg sharedConfig,
handlers request.Handlers,
sessOpts Options,
) error {
// Region if not already set by user
if len(aws.StringValue(cfg.Region)) == 0 {
if len(envCfg.Region) > 0 {
cfg.WithRegion(envCfg.Region)
} else if envCfg.EnableSharedConfig && len(sharedCfg.Region) > 0 {
cfg.WithRegion(sharedCfg.Region)
}
}
if cfg.EnableEndpointDiscovery == nil {
if envCfg.EnableEndpointDiscovery != nil {
cfg.WithEndpointDiscovery(*envCfg.EnableEndpointDiscovery)
} else if envCfg.EnableSharedConfig && sharedCfg.EnableEndpointDiscovery != nil {
cfg.WithEndpointDiscovery(*sharedCfg.EnableEndpointDiscovery)
}
}
// Regional Endpoint flag for STS endpoint resolving
mergeSTSRegionalEndpointConfig(cfg, []endpoints.STSRegionalEndpoint{
userCfg.STSRegionalEndpoint,
envCfg.STSRegionalEndpoint,
sharedCfg.STSRegionalEndpoint,
endpoints.LegacySTSEndpoint,
})
// Regional Endpoint flag for S3 endpoint resolving
mergeS3UsEast1RegionalEndpointConfig(cfg, []endpoints.S3UsEast1RegionalEndpoint{
userCfg.S3UsEast1RegionalEndpoint,
envCfg.S3UsEast1RegionalEndpoint,
sharedCfg.S3UsEast1RegionalEndpoint,
endpoints.LegacyS3UsEast1Endpoint,
})
var ec2IMDSEndpoint string
for _, v := range []string{
sessOpts.EC2IMDSEndpoint,
envCfg.EC2IMDSEndpoint,
sharedCfg.EC2IMDSEndpoint,
} {
if len(v) != 0 {
ec2IMDSEndpoint = v
break
}
}
var endpointMode endpoints.EC2IMDSEndpointModeState
for _, v := range []endpoints.EC2IMDSEndpointModeState{
sessOpts.EC2IMDSEndpointMode,
envCfg.EC2IMDSEndpointMode,
sharedCfg.EC2IMDSEndpointMode,
} {
if v != endpoints.EC2IMDSEndpointModeStateUnset {
endpointMode = v
break
}
}
if len(ec2IMDSEndpoint) != 0 || endpointMode != endpoints.EC2IMDSEndpointModeStateUnset {
cfg.EndpointResolver = wrapEC2IMDSEndpoint(cfg.EndpointResolver, ec2IMDSEndpoint, endpointMode)
}
cfg.S3UseARNRegion = userCfg.S3UseARNRegion
if cfg.S3UseARNRegion == nil {
cfg.S3UseARNRegion = &envCfg.S3UseARNRegion
}
if cfg.S3UseARNRegion == nil {
cfg.S3UseARNRegion = &sharedCfg.S3UseARNRegion
}
for _, v := range []endpoints.DualStackEndpointState{userCfg.UseDualStackEndpoint, envCfg.UseDualStackEndpoint, sharedCfg.UseDualStackEndpoint} {
if v != endpoints.DualStackEndpointStateUnset {
cfg.UseDualStackEndpoint = v
break
}
}
for _, v := range []endpoints.FIPSEndpointState{userCfg.UseFIPSEndpoint, envCfg.UseFIPSEndpoint, sharedCfg.UseFIPSEndpoint} {
if v != endpoints.FIPSEndpointStateUnset {
cfg.UseFIPSEndpoint = v
break
}
}
// Configure credentials if not already set by the user when creating the Session.
// Credentials are resolved last such that all _resolved_ config values are propagated to credential providers.
// ticket: P83606045
if cfg.Credentials == credentials.AnonymousCredentials && userCfg.Credentials == nil {
creds, err := resolveCredentials(cfg, envCfg, sharedCfg, handlers, sessOpts)
if err != nil {
return err
}
cfg.Credentials = creds
}
return nil
}
func mergeSTSRegionalEndpointConfig(cfg *aws.Config, values []endpoints.STSRegionalEndpoint) {
for _, v := range values {
if v != endpoints.UnsetSTSEndpoint {
cfg.STSRegionalEndpoint = v
break
}
}
}
func mergeS3UsEast1RegionalEndpointConfig(cfg *aws.Config, values []endpoints.S3UsEast1RegionalEndpoint) {
for _, v := range values {
if v != endpoints.UnsetS3UsEast1Endpoint {
cfg.S3UsEast1RegionalEndpoint = v
break
}
}
}
func initHandlers(s *Session) {
// Add the Validate parameter handler if it is not disabled.
s.Handlers.Validate.Remove(corehandlers.ValidateParametersHandler)
if !aws.BoolValue(s.Config.DisableParamValidation) {
s.Handlers.Validate.PushBackNamed(corehandlers.ValidateParametersHandler)
}
}
// Copy creates and returns a copy of the current Session, copying the config
// and handlers. If any additional configs are provided they will be merged
// on top of the Session's copied config.
//
// // Create a copy of the current Session, configured for the us-west-2 region.
// sess.Copy(&aws.Config{Region: aws.String("us-west-2")})
func (s *Session) Copy(cfgs ...*aws.Config) *Session {
newSession := &Session{
Config: s.Config.Copy(cfgs...),
Handlers: s.Handlers.Copy(),
options: s.options,
}
initHandlers(newSession)
return newSession
}
// ClientConfig satisfies the client.ConfigProvider interface and is used to
// configure the service client instances. Passing the Session to the service
// client's constructor (New) will use this method to configure the client.
func (s *Session) ClientConfig(service string, cfgs ...*aws.Config) client.Config {
s = s.Copy(cfgs...)
resolvedRegion := normalizeRegion(s.Config)
region := aws.StringValue(s.Config.Region)
resolved, err := s.resolveEndpoint(service, region, resolvedRegion, s.Config)
if err != nil {
s.Handlers.Validate.PushBack(func(r *request.Request) {
if len(r.ClientInfo.Endpoint) != 0 {
// Error occurred while resolving endpoint, but the request
// being invoked has had an endpoint specified after the client
// was created.
return
}
r.Error = err
})
}
return client.Config{
Config: s.Config,
Handlers: s.Handlers,
PartitionID: resolved.PartitionID,
Endpoint: resolved.URL,
SigningRegion: resolved.SigningRegion,
SigningNameDerived: resolved.SigningNameDerived,
SigningName: resolved.SigningName,
ResolvedRegion: resolvedRegion,
}
}
const ec2MetadataServiceID = "ec2metadata"
func (s *Session) resolveEndpoint(service, region, resolvedRegion string, cfg *aws.Config) (endpoints.ResolvedEndpoint, error) {
if ep := aws.StringValue(cfg.Endpoint); len(ep) != 0 {
return endpoints.ResolvedEndpoint{
URL: endpoints.AddScheme(ep, aws.BoolValue(cfg.DisableSSL)),
SigningRegion: region,
}, nil
}
resolved, err := cfg.EndpointResolver.EndpointFor(service, region,
func(opt *endpoints.Options) {
opt.DisableSSL = aws.BoolValue(cfg.DisableSSL)
opt.UseDualStack = aws.BoolValue(cfg.UseDualStack)
opt.UseDualStackEndpoint = cfg.UseDualStackEndpoint
opt.UseFIPSEndpoint = cfg.UseFIPSEndpoint
// Support for STSRegionalEndpoint where the STSRegionalEndpoint is
// provided in envConfig or sharedConfig with envConfig getting
// precedence.
opt.STSRegionalEndpoint = cfg.STSRegionalEndpoint
// Support for S3UsEast1RegionalEndpoint where the S3UsEast1RegionalEndpoint is
// provided in envConfig or sharedConfig with envConfig getting
// precedence.
opt.S3UsEast1RegionalEndpoint = cfg.S3UsEast1RegionalEndpoint
// Support the condition where the service is modeled but its
// endpoint metadata is not available.
opt.ResolveUnknownService = true
opt.ResolvedRegion = resolvedRegion
opt.Logger = cfg.Logger
opt.LogDeprecated = cfg.LogLevel.Matches(aws.LogDebugWithDeprecated)
},
)
if err != nil {
return endpoints.ResolvedEndpoint{}, err
}
return resolved, nil
}
// ClientConfigNoResolveEndpoint is the same as ClientConfig with the exception
// that the EndpointResolver will not be used to resolve the endpoint. The only
// endpoint set must come from the aws.Config.Endpoint field.
func (s *Session) ClientConfigNoResolveEndpoint(cfgs ...*aws.Config) client.Config {
s = s.Copy(cfgs...)
resolvedRegion := normalizeRegion(s.Config)
var resolved endpoints.ResolvedEndpoint
if ep := aws.StringValue(s.Config.Endpoint); len(ep) > 0 {
resolved.URL = endpoints.AddScheme(ep, aws.BoolValue(s.Config.DisableSSL))
resolved.SigningRegion = aws.StringValue(s.Config.Region)
}
return client.Config{
Config: s.Config,
Handlers: s.Handlers,
Endpoint: resolved.URL,
SigningRegion: resolved.SigningRegion,
SigningNameDerived: resolved.SigningNameDerived,
SigningName: resolved.SigningName,
ResolvedRegion: resolvedRegion,
}
}
// logDeprecatedNewSessionError function enables error handling for session
func (s *Session) logDeprecatedNewSessionError(msg string, err error, cfgs []*aws.Config) {
// Session creation failed, need to report the error and prevent
// any requests from succeeding.
s.Config.MergeIn(cfgs...)
s.Config.Logger.Log("ERROR:", msg, "Error:", err)
s.Handlers.Validate.PushBack(func(r *request.Request) {
r.Error = err
})
}
// normalizeRegion resolves / normalizes the configured region (converts pseudo fips regions), and modifies the provided
// config to have the equivalent options for resolution and returns the resolved region name.
func normalizeRegion(cfg *aws.Config) (resolved string) {
const fipsInfix = "-fips-"
const fipsPrefix = "-fips"
const fipsSuffix = "fips-"
region := aws.StringValue(cfg.Region)
if strings.Contains(region, fipsInfix) ||
strings.Contains(region, fipsPrefix) ||
strings.Contains(region, fipsSuffix) {
resolved = strings.Replace(strings.Replace(strings.Replace(
region, fipsInfix, "-", -1), fipsPrefix, "", -1), fipsSuffix, "", -1)
cfg.UseFIPSEndpoint = endpoints.FIPSEndpointStateEnabled
}
return resolved
}

846
vendor/github.com/aws/aws-sdk-go/aws/session/shared_config.go generated vendored Normal file
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@ -0,0 +1,846 @@
package session
import (
"fmt"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/endpoints"
"github.com/aws/aws-sdk-go/internal/ini"
)
const (
// Static Credentials group
accessKeyIDKey = `aws_access_key_id` // group required
secretAccessKey = `aws_secret_access_key` // group required
sessionTokenKey = `aws_session_token` // optional
// Assume Role Credentials group
roleArnKey = `role_arn` // group required
sourceProfileKey = `source_profile` // group required (or credential_source)
credentialSourceKey = `credential_source` // group required (or source_profile)
externalIDKey = `external_id` // optional
mfaSerialKey = `mfa_serial` // optional
roleSessionNameKey = `role_session_name` // optional
roleDurationSecondsKey = "duration_seconds" // optional
// Prefix to be used for SSO sections. These are supposed to only exist in
// the shared config file, not the credentials file.
ssoSectionPrefix = `sso-session `
// AWS Single Sign-On (AWS SSO) group
ssoSessionNameKey = "sso_session"
// AWS Single Sign-On (AWS SSO) group
ssoAccountIDKey = "sso_account_id"
ssoRegionKey = "sso_region"
ssoRoleNameKey = "sso_role_name"
ssoStartURL = "sso_start_url"
// CSM options
csmEnabledKey = `csm_enabled`
csmHostKey = `csm_host`
csmPortKey = `csm_port`
csmClientIDKey = `csm_client_id`
// Additional Config fields
regionKey = `region`
// custom CA Bundle filename
customCABundleKey = `ca_bundle`
// endpoint discovery group
enableEndpointDiscoveryKey = `endpoint_discovery_enabled` // optional
// External Credential Process
credentialProcessKey = `credential_process` // optional
// Web Identity Token File
webIdentityTokenFileKey = `web_identity_token_file` // optional
// Additional config fields for regional or legacy endpoints
stsRegionalEndpointSharedKey = `sts_regional_endpoints`
// Additional config fields for regional or legacy endpoints
s3UsEast1RegionalSharedKey = `s3_us_east_1_regional_endpoint`
// DefaultSharedConfigProfile is the default profile to be used when
// loading configuration from the config files if another profile name
// is not provided.
DefaultSharedConfigProfile = `default`
// S3 ARN Region Usage
s3UseARNRegionKey = "s3_use_arn_region"
// EC2 IMDS Endpoint Mode
ec2MetadataServiceEndpointModeKey = "ec2_metadata_service_endpoint_mode"
// EC2 IMDS Endpoint
ec2MetadataServiceEndpointKey = "ec2_metadata_service_endpoint"
// Use DualStack Endpoint Resolution
useDualStackEndpoint = "use_dualstack_endpoint"
// Use FIPS Endpoint Resolution
useFIPSEndpointKey = "use_fips_endpoint"
)
// sharedConfig represents the configuration fields of the SDK config files.
type sharedConfig struct {
Profile string
// Credentials values from the config file. Both aws_access_key_id and
// aws_secret_access_key must be provided together in the same file to be
// considered valid. The values will be ignored if not a complete group.
// aws_session_token is an optional field that can be provided if both of
// the other two fields are also provided.
//
// aws_access_key_id
// aws_secret_access_key
// aws_session_token
Creds credentials.Value
CredentialSource string
CredentialProcess string
WebIdentityTokenFile string
// SSO session options
SSOSessionName string
SSOSession *ssoSession
SSOAccountID string
SSORegion string
SSORoleName string
SSOStartURL string
RoleARN string
RoleSessionName string
ExternalID string
MFASerial string
AssumeRoleDuration *time.Duration
SourceProfileName string
SourceProfile *sharedConfig
// Region is the region the SDK should use for looking up AWS service
// endpoints and signing requests.
//
// region
Region string
// CustomCABundle is the file path to a PEM file the SDK will read and
// use to configure the HTTP transport with additional CA certs that are
// not present in the platforms default CA store.
//
// This value will be ignored if the file does not exist.
//
// ca_bundle
CustomCABundle string
// EnableEndpointDiscovery can be enabled in the shared config by setting
// endpoint_discovery_enabled to true
//
// endpoint_discovery_enabled = true
EnableEndpointDiscovery *bool
// CSM Options
CSMEnabled *bool
CSMHost string
CSMPort string
CSMClientID string
// Specifies the Regional Endpoint flag for the SDK to resolve the endpoint for a service
//
// sts_regional_endpoints = regional
// This can take value as `LegacySTSEndpoint` or `RegionalSTSEndpoint`
STSRegionalEndpoint endpoints.STSRegionalEndpoint
// Specifies the Regional Endpoint flag for the SDK to resolve the endpoint for a service
//
// s3_us_east_1_regional_endpoint = regional
// This can take value as `LegacyS3UsEast1Endpoint` or `RegionalS3UsEast1Endpoint`
S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
// Specifies if the S3 service should allow ARNs to direct the region
// the client's requests are sent to.
//
// s3_use_arn_region=true
S3UseARNRegion bool
// Specifies the EC2 Instance Metadata Service default endpoint selection mode (IPv4 or IPv6)
//
// ec2_metadata_service_endpoint_mode=IPv6
EC2IMDSEndpointMode endpoints.EC2IMDSEndpointModeState
// Specifies the EC2 Instance Metadata Service endpoint to use. If specified it overrides EC2IMDSEndpointMode.
//
// ec2_metadata_service_endpoint=http://fd00:ec2::254
EC2IMDSEndpoint string
// Specifies that SDK clients must resolve a dual-stack endpoint for
// services.
//
// use_dualstack_endpoint=true
UseDualStackEndpoint endpoints.DualStackEndpointState
// Specifies that SDK clients must resolve a FIPS endpoint for
// services.
//
// use_fips_endpoint=true
UseFIPSEndpoint endpoints.FIPSEndpointState
}
type sharedConfigFile struct {
Filename string
IniData ini.Sections
}
// SSOSession provides the shared configuration parameters of the sso-session
// section.
type ssoSession struct {
Name string
SSORegion string
SSOStartURL string
}
func (s *ssoSession) setFromIniSection(section ini.Section) {
updateString(&s.Name, section, ssoSessionNameKey)
updateString(&s.SSORegion, section, ssoRegionKey)
updateString(&s.SSOStartURL, section, ssoStartURL)
}
// loadSharedConfig retrieves the configuration from the list of files using
// the profile provided. The order the files are listed will determine
// precedence. Values in subsequent files will overwrite values defined in
// earlier files.
//
// For example, given two files A and B. Both define credentials. If the order
// of the files are A then B, B's credential values will be used instead of
// A's.
//
// See sharedConfig.setFromFile for information how the config files
// will be loaded.
func loadSharedConfig(profile string, filenames []string, exOpts bool) (sharedConfig, error) {
if len(profile) == 0 {
profile = DefaultSharedConfigProfile
}
files, err := loadSharedConfigIniFiles(filenames)
if err != nil {
return sharedConfig{}, err
}
cfg := sharedConfig{}
profiles := map[string]struct{}{}
if err = cfg.setFromIniFiles(profiles, profile, files, exOpts); err != nil {
return sharedConfig{}, err
}
return cfg, nil
}
func loadSharedConfigIniFiles(filenames []string) ([]sharedConfigFile, error) {
files := make([]sharedConfigFile, 0, len(filenames))
for _, filename := range filenames {
sections, err := ini.OpenFile(filename)
if aerr, ok := err.(awserr.Error); ok && aerr.Code() == ini.ErrCodeUnableToReadFile {
// Skip files which can't be opened and read for whatever reason
continue
} else if err != nil {
return nil, SharedConfigLoadError{Filename: filename, Err: err}
}
files = append(files, sharedConfigFile{
Filename: filename, IniData: sections,
})
}
return files, nil
}
func (cfg *sharedConfig) setFromIniFiles(profiles map[string]struct{}, profile string, files []sharedConfigFile, exOpts bool) error {
cfg.Profile = profile
// Trim files from the list that don't exist.
var skippedFiles int
var profileNotFoundErr error
for _, f := range files {
if err := cfg.setFromIniFile(profile, f, exOpts); err != nil {
if _, ok := err.(SharedConfigProfileNotExistsError); ok {
// Ignore profiles not defined in individual files.
profileNotFoundErr = err
skippedFiles++
continue
}
return err
}
}
if skippedFiles == len(files) {
// If all files were skipped because the profile is not found, return
// the original profile not found error.
return profileNotFoundErr
}
if _, ok := profiles[profile]; ok {
// if this is the second instance of the profile the Assume Role
// options must be cleared because they are only valid for the
// first reference of a profile. The self linked instance of the
// profile only have credential provider options.
cfg.clearAssumeRoleOptions()
} else {
// First time a profile has been seen. Assert if the credential type
// requires a role ARN, the ARN is also set
if err := cfg.validateCredentialsConfig(profile); err != nil {
return err
}
}
profiles[profile] = struct{}{}
if err := cfg.validateCredentialType(); err != nil {
return err
}
// Link source profiles for assume roles
if len(cfg.SourceProfileName) != 0 {
// Linked profile via source_profile ignore credential provider
// options, the source profile must provide the credentials.
cfg.clearCredentialOptions()
srcCfg := &sharedConfig{}
err := srcCfg.setFromIniFiles(profiles, cfg.SourceProfileName, files, exOpts)
if err != nil {
// SourceProfile that doesn't exist is an error in configuration.
if _, ok := err.(SharedConfigProfileNotExistsError); ok {
err = SharedConfigAssumeRoleError{
RoleARN: cfg.RoleARN,
SourceProfile: cfg.SourceProfileName,
}
}
return err
}
if !srcCfg.hasCredentials() {
return SharedConfigAssumeRoleError{
RoleARN: cfg.RoleARN,
SourceProfile: cfg.SourceProfileName,
}
}
cfg.SourceProfile = srcCfg
}
// If the profile contains an SSO session parameter, the session MUST exist
// as a section in the config file. Load the SSO session using the name
// provided. If the session section is not found or incomplete an error
// will be returned.
if cfg.hasSSOTokenProviderConfiguration() {
skippedFiles = 0
for _, f := range files {
section, ok := f.IniData.GetSection(fmt.Sprintf(ssoSectionPrefix + strings.TrimSpace(cfg.SSOSessionName)))
if ok {
var ssoSession ssoSession
ssoSession.setFromIniSection(section)
ssoSession.Name = cfg.SSOSessionName
cfg.SSOSession = &ssoSession
break
}
skippedFiles++
}
if skippedFiles == len(files) {
// If all files were skipped because the sso session section is not found, return
// the sso section not found error.
return fmt.Errorf("failed to find SSO session section, %v", cfg.SSOSessionName)
}
}
return nil
}
// setFromFile loads the configuration from the file using the profile
// provided. A sharedConfig pointer type value is used so that multiple config
// file loadings can be chained.
//
// Only loads complete logically grouped values, and will not set fields in cfg
// for incomplete grouped values in the config. Such as credentials. For
// example if a config file only includes aws_access_key_id but no
// aws_secret_access_key the aws_access_key_id will be ignored.
func (cfg *sharedConfig) setFromIniFile(profile string, file sharedConfigFile, exOpts bool) error {
section, ok := file.IniData.GetSection(profile)
if !ok {
// Fallback to to alternate profile name: profile <name>
section, ok = file.IniData.GetSection(fmt.Sprintf("profile %s", profile))
if !ok {
return SharedConfigProfileNotExistsError{Profile: profile, Err: nil}
}
}
if exOpts {
// Assume Role Parameters
updateString(&cfg.RoleARN, section, roleArnKey)
updateString(&cfg.ExternalID, section, externalIDKey)
updateString(&cfg.MFASerial, section, mfaSerialKey)
updateString(&cfg.RoleSessionName, section, roleSessionNameKey)
updateString(&cfg.SourceProfileName, section, sourceProfileKey)
updateString(&cfg.CredentialSource, section, credentialSourceKey)
updateString(&cfg.Region, section, regionKey)
updateString(&cfg.CustomCABundle, section, customCABundleKey)
// we're retaining a behavioral quirk with this field that existed before
// the removal of literal parsing for (aws-sdk-go-v2/#2276):
// - if the key is missing, the config field will not be set
// - if the key is set to a non-numeric, the config field will be set to 0
if section.Has(roleDurationSecondsKey) {
var d time.Duration
if v, ok := section.Int(roleDurationSecondsKey); ok {
d = time.Duration(v) * time.Second
}
cfg.AssumeRoleDuration = &d
}
if v := section.String(stsRegionalEndpointSharedKey); len(v) != 0 {
sre, err := endpoints.GetSTSRegionalEndpoint(v)
if err != nil {
return fmt.Errorf("failed to load %s from shared config, %s, %v",
stsRegionalEndpointSharedKey, file.Filename, err)
}
cfg.STSRegionalEndpoint = sre
}
if v := section.String(s3UsEast1RegionalSharedKey); len(v) != 0 {
sre, err := endpoints.GetS3UsEast1RegionalEndpoint(v)
if err != nil {
return fmt.Errorf("failed to load %s from shared config, %s, %v",
s3UsEast1RegionalSharedKey, file.Filename, err)
}
cfg.S3UsEast1RegionalEndpoint = sre
}
// AWS Single Sign-On (AWS SSO)
// SSO session options
updateString(&cfg.SSOSessionName, section, ssoSessionNameKey)
// AWS Single Sign-On (AWS SSO)
updateString(&cfg.SSOAccountID, section, ssoAccountIDKey)
updateString(&cfg.SSORegion, section, ssoRegionKey)
updateString(&cfg.SSORoleName, section, ssoRoleNameKey)
updateString(&cfg.SSOStartURL, section, ssoStartURL)
if err := updateEC2MetadataServiceEndpointMode(&cfg.EC2IMDSEndpointMode, section, ec2MetadataServiceEndpointModeKey); err != nil {
return fmt.Errorf("failed to load %s from shared config, %s, %v",
ec2MetadataServiceEndpointModeKey, file.Filename, err)
}
updateString(&cfg.EC2IMDSEndpoint, section, ec2MetadataServiceEndpointKey)
updateUseDualStackEndpoint(&cfg.UseDualStackEndpoint, section, useDualStackEndpoint)
updateUseFIPSEndpoint(&cfg.UseFIPSEndpoint, section, useFIPSEndpointKey)
}
updateString(&cfg.CredentialProcess, section, credentialProcessKey)
updateString(&cfg.WebIdentityTokenFile, section, webIdentityTokenFileKey)
// Shared Credentials
creds := credentials.Value{
AccessKeyID: section.String(accessKeyIDKey),
SecretAccessKey: section.String(secretAccessKey),
SessionToken: section.String(sessionTokenKey),
ProviderName: fmt.Sprintf("SharedConfigCredentials: %s", file.Filename),
}
if creds.HasKeys() {
cfg.Creds = creds
}
// Endpoint discovery
updateBoolPtr(&cfg.EnableEndpointDiscovery, section, enableEndpointDiscoveryKey)
// CSM options
updateBoolPtr(&cfg.CSMEnabled, section, csmEnabledKey)
updateString(&cfg.CSMHost, section, csmHostKey)
updateString(&cfg.CSMPort, section, csmPortKey)
updateString(&cfg.CSMClientID, section, csmClientIDKey)
updateBool(&cfg.S3UseARNRegion, section, s3UseARNRegionKey)
return nil
}
func updateEC2MetadataServiceEndpointMode(endpointMode *endpoints.EC2IMDSEndpointModeState, section ini.Section, key string) error {
if !section.Has(key) {
return nil
}
value := section.String(key)
return endpointMode.SetFromString(value)
}
func (cfg *sharedConfig) validateCredentialsConfig(profile string) error {
if err := cfg.validateCredentialsRequireARN(profile); err != nil {
return err
}
return nil
}
func (cfg *sharedConfig) validateCredentialsRequireARN(profile string) error {
var credSource string
switch {
case len(cfg.SourceProfileName) != 0:
credSource = sourceProfileKey
case len(cfg.CredentialSource) != 0:
credSource = credentialSourceKey
case len(cfg.WebIdentityTokenFile) != 0:
credSource = webIdentityTokenFileKey
}
if len(credSource) != 0 && len(cfg.RoleARN) == 0 {
return CredentialRequiresARNError{
Type: credSource,
Profile: profile,
}
}
return nil
}
func (cfg *sharedConfig) validateCredentialType() error {
// Only one or no credential type can be defined.
if !oneOrNone(
len(cfg.SourceProfileName) != 0,
len(cfg.CredentialSource) != 0,
len(cfg.CredentialProcess) != 0,
len(cfg.WebIdentityTokenFile) != 0,
) {
return ErrSharedConfigSourceCollision
}
return nil
}
func (cfg *sharedConfig) validateSSOConfiguration() error {
if cfg.hasSSOTokenProviderConfiguration() {
err := cfg.validateSSOTokenProviderConfiguration()
if err != nil {
return err
}
return nil
}
if cfg.hasLegacySSOConfiguration() {
err := cfg.validateLegacySSOConfiguration()
if err != nil {
return err
}
}
return nil
}
func (cfg *sharedConfig) hasCredentials() bool {
switch {
case len(cfg.SourceProfileName) != 0:
case len(cfg.CredentialSource) != 0:
case len(cfg.CredentialProcess) != 0:
case len(cfg.WebIdentityTokenFile) != 0:
case cfg.hasSSOConfiguration():
case cfg.Creds.HasKeys():
default:
return false
}
return true
}
func (cfg *sharedConfig) clearCredentialOptions() {
cfg.CredentialSource = ""
cfg.CredentialProcess = ""
cfg.WebIdentityTokenFile = ""
cfg.Creds = credentials.Value{}
cfg.SSOAccountID = ""
cfg.SSORegion = ""
cfg.SSORoleName = ""
cfg.SSOStartURL = ""
}
func (cfg *sharedConfig) clearAssumeRoleOptions() {
cfg.RoleARN = ""
cfg.ExternalID = ""
cfg.MFASerial = ""
cfg.RoleSessionName = ""
cfg.SourceProfileName = ""
}
func (cfg *sharedConfig) hasSSOConfiguration() bool {
return cfg.hasSSOTokenProviderConfiguration() || cfg.hasLegacySSOConfiguration()
}
func (c *sharedConfig) hasSSOTokenProviderConfiguration() bool {
return len(c.SSOSessionName) > 0
}
func (c *sharedConfig) hasLegacySSOConfiguration() bool {
return len(c.SSORegion) > 0 || len(c.SSOAccountID) > 0 || len(c.SSOStartURL) > 0 || len(c.SSORoleName) > 0
}
func (c *sharedConfig) validateSSOTokenProviderConfiguration() error {
var missing []string
if len(c.SSOSessionName) == 0 {
missing = append(missing, ssoSessionNameKey)
}
if c.SSOSession == nil {
missing = append(missing, ssoSectionPrefix)
} else {
if len(c.SSOSession.SSORegion) == 0 {
missing = append(missing, ssoRegionKey)
}
if len(c.SSOSession.SSOStartURL) == 0 {
missing = append(missing, ssoStartURL)
}
}
if len(missing) > 0 {
return fmt.Errorf("profile %q is configured to use SSO but is missing required configuration: %s",
c.Profile, strings.Join(missing, ", "))
}
if len(c.SSORegion) > 0 && c.SSORegion != c.SSOSession.SSORegion {
return fmt.Errorf("%s in profile %q must match %s in %s", ssoRegionKey, c.Profile, ssoRegionKey, ssoSectionPrefix)
}
if len(c.SSOStartURL) > 0 && c.SSOStartURL != c.SSOSession.SSOStartURL {
return fmt.Errorf("%s in profile %q must match %s in %s", ssoStartURL, c.Profile, ssoStartURL, ssoSectionPrefix)
}
return nil
}
func (c *sharedConfig) validateLegacySSOConfiguration() error {
var missing []string
if len(c.SSORegion) == 0 {
missing = append(missing, ssoRegionKey)
}
if len(c.SSOStartURL) == 0 {
missing = append(missing, ssoStartURL)
}
if len(c.SSOAccountID) == 0 {
missing = append(missing, ssoAccountIDKey)
}
if len(c.SSORoleName) == 0 {
missing = append(missing, ssoRoleNameKey)
}
if len(missing) > 0 {
return fmt.Errorf("profile %q is configured to use SSO but is missing required configuration: %s",
c.Profile, strings.Join(missing, ", "))
}
return nil
}
func oneOrNone(bs ...bool) bool {
var count int
for _, b := range bs {
if b {
count++
if count > 1 {
return false
}
}
}
return true
}
// updateString will only update the dst with the value in the section key, key
// is present in the section.
func updateString(dst *string, section ini.Section, key string) {
if !section.Has(key) {
return
}
*dst = section.String(key)
}
// updateBool will only update the dst with the value in the section key, key
// is present in the section.
func updateBool(dst *bool, section ini.Section, key string) {
if !section.Has(key) {
return
}
// retains pre-(aws-sdk-go-v2#2276) behavior where non-bool value would resolve to false
v, _ := section.Bool(key)
*dst = v
}
// updateBoolPtr will only update the dst with the value in the section key,
// key is present in the section.
func updateBoolPtr(dst **bool, section ini.Section, key string) {
if !section.Has(key) {
return
}
// retains pre-(aws-sdk-go-v2#2276) behavior where non-bool value would resolve to false
v, _ := section.Bool(key)
*dst = new(bool)
**dst = v
}
// SharedConfigLoadError is an error for the shared config file failed to load.
type SharedConfigLoadError struct {
Filename string
Err error
}
// Code is the short id of the error.
func (e SharedConfigLoadError) Code() string {
return "SharedConfigLoadError"
}
// Message is the description of the error
func (e SharedConfigLoadError) Message() string {
return fmt.Sprintf("failed to load config file, %s", e.Filename)
}
// OrigErr is the underlying error that caused the failure.
func (e SharedConfigLoadError) OrigErr() error {
return e.Err
}
// Error satisfies the error interface.
func (e SharedConfigLoadError) Error() string {
return awserr.SprintError(e.Code(), e.Message(), "", e.Err)
}
// SharedConfigProfileNotExistsError is an error for the shared config when
// the profile was not find in the config file.
type SharedConfigProfileNotExistsError struct {
Profile string
Err error
}
// Code is the short id of the error.
func (e SharedConfigProfileNotExistsError) Code() string {
return "SharedConfigProfileNotExistsError"
}
// Message is the description of the error
func (e SharedConfigProfileNotExistsError) Message() string {
return fmt.Sprintf("failed to get profile, %s", e.Profile)
}
// OrigErr is the underlying error that caused the failure.
func (e SharedConfigProfileNotExistsError) OrigErr() error {
return e.Err
}
// Error satisfies the error interface.
func (e SharedConfigProfileNotExistsError) Error() string {
return awserr.SprintError(e.Code(), e.Message(), "", e.Err)
}
// SharedConfigAssumeRoleError is an error for the shared config when the
// profile contains assume role information, but that information is invalid
// or not complete.
type SharedConfigAssumeRoleError struct {
RoleARN string
SourceProfile string
}
// Code is the short id of the error.
func (e SharedConfigAssumeRoleError) Code() string {
return "SharedConfigAssumeRoleError"
}
// Message is the description of the error
func (e SharedConfigAssumeRoleError) Message() string {
return fmt.Sprintf(
"failed to load assume role for %s, source profile %s has no shared credentials",
e.RoleARN, e.SourceProfile,
)
}
// OrigErr is the underlying error that caused the failure.
func (e SharedConfigAssumeRoleError) OrigErr() error {
return nil
}
// Error satisfies the error interface.
func (e SharedConfigAssumeRoleError) Error() string {
return awserr.SprintError(e.Code(), e.Message(), "", nil)
}
// CredentialRequiresARNError provides the error for shared config credentials
// that are incorrectly configured in the shared config or credentials file.
type CredentialRequiresARNError struct {
// type of credentials that were configured.
Type string
// Profile name the credentials were in.
Profile string
}
// Code is the short id of the error.
func (e CredentialRequiresARNError) Code() string {
return "CredentialRequiresARNError"
}
// Message is the description of the error
func (e CredentialRequiresARNError) Message() string {
return fmt.Sprintf(
"credential type %s requires role_arn, profile %s",
e.Type, e.Profile,
)
}
// OrigErr is the underlying error that caused the failure.
func (e CredentialRequiresARNError) OrigErr() error {
return nil
}
// Error satisfies the error interface.
func (e CredentialRequiresARNError) Error() string {
return awserr.SprintError(e.Code(), e.Message(), "", nil)
}
// updateEndpointDiscoveryType will only update the dst with the value in the section, if
// a valid key and corresponding EndpointDiscoveryType is found.
func updateUseDualStackEndpoint(dst *endpoints.DualStackEndpointState, section ini.Section, key string) {
if !section.Has(key) {
return
}
// retains pre-(aws-sdk-go-v2/#2276) behavior where non-bool value would resolve to false
if v, _ := section.Bool(key); v {
*dst = endpoints.DualStackEndpointStateEnabled
} else {
*dst = endpoints.DualStackEndpointStateDisabled
}
return
}
// updateEndpointDiscoveryType will only update the dst with the value in the section, if
// a valid key and corresponding EndpointDiscoveryType is found.
func updateUseFIPSEndpoint(dst *endpoints.FIPSEndpointState, section ini.Section, key string) {
if !section.Has(key) {
return
}
// retains pre-(aws-sdk-go-v2/#2276) behavior where non-bool value would resolve to false
if v, _ := section.Bool(key); v {
*dst = endpoints.FIPSEndpointStateEnabled
} else {
*dst = endpoints.FIPSEndpointStateDisabled
}
return
}

81
vendor/github.com/aws/aws-sdk-go/aws/signer/v4/header_rules.go generated vendored Normal file
View file

@ -0,0 +1,81 @@
package v4
import (
"github.com/aws/aws-sdk-go/internal/strings"
)
// validator houses a set of rule needed for validation of a
// string value
type rules []rule
// rule interface allows for more flexible rules and just simply
// checks whether or not a value adheres to that rule
type rule interface {
IsValid(value string) bool
}
// IsValid will iterate through all rules and see if any rules
// apply to the value and supports nested rules
func (r rules) IsValid(value string) bool {
for _, rule := range r {
if rule.IsValid(value) {
return true
}
}
return false
}
// mapRule generic rule for maps
type mapRule map[string]struct{}
// IsValid for the map rule satisfies whether it exists in the map
func (m mapRule) IsValid(value string) bool {
_, ok := m[value]
return ok
}
// allowList is a generic rule for allow listing
type allowList struct {
rule
}
// IsValid for allow list checks if the value is within the allow list
func (w allowList) IsValid(value string) bool {
return w.rule.IsValid(value)
}
// excludeList is a generic rule for exclude listing
type excludeList struct {
rule
}
// IsValid for exclude list checks if the value is within the exclude list
func (b excludeList) IsValid(value string) bool {
return !b.rule.IsValid(value)
}
type patterns []string
// IsValid for patterns checks each pattern and returns if a match has
// been found
func (p patterns) IsValid(value string) bool {
for _, pattern := range p {
if strings.HasPrefixFold(value, pattern) {
return true
}
}
return false
}
// inclusiveRules rules allow for rules to depend on one another
type inclusiveRules []rule
// IsValid will return true if all rules are true
func (r inclusiveRules) IsValid(value string) bool {
for _, rule := range r {
if !rule.IsValid(value) {
return false
}
}
return true
}

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