http-server-status/internal/pkg/checks/memory.go

package checks

import (
	"github.com/mackerelio/go-osstat/memory"
)

type MemoryConfig struct {
	Max float64 `yaml:"max"`
}

type Memory struct {
	Config MemoryConfig
}

func (h Memory) Execute() (ok bool, data interface{}, err error) {
	memory, err := memory.Get()
	p := float64(100) / float64(memory.Total) * float64(memory.Used)
	if p > h.Config.Max {
		return false, nil, nil
	}

	return true, nil,nil
}

func (h Memory) Name() string {
	return "Memory usage"
}