service helpers

main.go

func WaitShutdownRequest(f func(os.Signal)) {
	signals := make(chan os.Signal)
	signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
	f(<-signals)
}

func CleanUp(closers ...func()) {
	for _, f := range closers {
		f()
	}
}

func FatalIfError(err error, lastWords string, closers ...func()) {
	if err == nil {
		return
	}
	CleanUp(closers...)
	fmt.Printf("%s: %s", lastWords, err)
	os.Exit(1)
}