28 lines
934 B
Go
28 lines
934 B
Go
package cron
|
|
|
|
import "time"
|
|
|
|
// ConstantDelaySchedule represents a simple recurring duty cycle, e.g. "Every 5 minutes".
|
|
// It does not support jobs more frequent than once a second.
|
|
type ConstantDelaySchedule struct {
|
|
Delay time.Duration
|
|
}
|
|
|
|
// Every returns a crontab Schedule that activates once every duration.
|
|
// Delays of less than a second are not supported (will round up to 1 second).
|
|
// Any fields less than a Second are truncated.
|
|
func Every(duration time.Duration) ConstantDelaySchedule {
|
|
if duration < time.Second {
|
|
duration = time.Second
|
|
}
|
|
return ConstantDelaySchedule{
|
|
Delay: duration - time.Duration(duration.Nanoseconds())%time.Second,
|
|
}
|
|
}
|
|
|
|
// Next returns the next time this should be run.
|
|
// This rounds so that the next activation time will be on the second.
|
|
func (schedule ConstantDelaySchedule) Next(t time.Time) time.Time {
|
|
return t.Add(schedule.Delay - time.Duration(t.Nanosecond())*time.Nanosecond)
|
|
}
|