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