Timer

timer.go

func keepRunning(timeout int, action func(), cancel <-chan os.Signal) {
	ticker := time.NewTicker(500 * time.Millisecond)
	for {
		select {
		case <-cancel:
			fmt.Printf("exiting. timed out\n")
			ticker.Stop()
			return
		case <-ticker.C:
			action()
			fmt.Println("ticking now")
		}
	}
}

// NewTimer creates a timer that runs for a specified number of seconds.
// When timer finishes, it calls the action function supplied.
// Use the returned timer object to stop the timer early, if needed.
func NewTimer(seconds int, action func()) *time.Timer {
	timer := time.NewTimer(time.Second * time.Duration(seconds))
	go func() {
		<-timer.C
		action()
	}()
	return timer
}