func main(){
 go WaitForInterrupt(func() { worker.Stop() })

  work.Run()
}

func WaitForInterrupt(f func()) {

	// Set up channel on which to send signal notifications.
	// We must use a buffered channel or risk missing the signal
	// if we're not ready to receive when the signal is sent.
	c := make(chan os.Signal, 1)
	signal.Notify(c, syscall.SIGTERM, os.Interrupt, os.Kill) //调用系统函数

	// Block until a signal is received.
	s := <-c

	log.Println("Receiving signal:", s)

	f()
}