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cron.go
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cron.go
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package cron
import (
"context"
"github.com/charlesbases/logger"
"github.com/robfig/cron/v3"
"github.com/charlesbases/library/lifecycle"
)
// Stop cron
type Stop func() context.Context
var background = func() context.Context {
return context.Background()
}
// CronCmd command of cron
type CronCmd interface {
AddFunc(spec string, action func()) (cron.EntryID, error)
}
// clog .
type clog struct{}
// Info .
func (clog) Info(_ string, _ ...interface{}) {
}
// Error .
func (clog) Error(err error, _ string, _ ...interface{}) {
logger.Named("crontab").Error(err)
}
// Run 添加并运行定时任务,并返回 jobs 的 Stop 函数。
func Run(fn func(cron CronCmd) error) (Stop, error) {
c := cron.New(cron.WithLogger(new(clog)))
if err := fn(c); err != nil {
return background, err
}
c.Start()
return c.Stop, nil
}
// Append 添加定时任务,并且随着 lifecycle.Lifecycle 运行或停止
func Append(lf *lifecycle.Lifecycle, fn func(cron CronCmd) error) error {
c := cron.New(cron.WithLogger(new(clog)))
if err := fn(c); err != nil {
return err
}
lf.Append(&lifecycle.Hook{
Name: "crontab",
OnStart: func(ctx context.Context) error {
c.Start()
return nil
},
OnStop: func(ctx context.Context) error {
c.Stop()
return nil
},
})
return nil
}