mirror of
https://github.com/offen/docker-volume-backup.git
synced 2024-09-20 05:30:26 +02:00
30 lines
574 B
Go
30 lines
574 B
Go
|
// Copyright 2024 - Offen Authors <hioffen@posteo.de>
|
||
|
|
// SPDX-License-Identifier: MPL-2.0
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/robfig/cron/v3"
|
||
|
|
)
|
||
|
|
|
||
|
|
// checkCronSchedule detects whether the given cron expression will actually
|
||
|
|
// ever be executed or not.
|
||
|
|
func checkCronSchedule(expression string) (ok bool) {
|
||
|
|
defer func() {
|
||
|
|
if err := recover(); err != nil {
|
||
|
|
ok = false
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
sched, err := cron.ParseStandard(expression)
|
||
|
|
if err != nil {
|
||
|
|
ok = false
|
||
|
|
return
|
||
|
|
}
|
||
|
|
now := time.Now()
|
||
|
|
sched.Next(now) // panics when the cron would never run
|
||
|
|
ok = true
|
||
|
|
return
|
||
|
|
}
|