Configure logger in go with logutils

setupLog.go

func setupLog(debug, datetime bool) {
	filter := &logutils.LevelFilter{
		Levels:   []logutils.LogLevel{"DEBUG", "INFO", "WARN", "ERROR"},
		MinLevel: logutils.LogLevel("INFO"),
		Writer:   os.Stdout,
	}

	if debug {
		filter.MinLevel = logutils.LogLevel("DEBUG")
	}

	if datetime {
		log.SetFlags(log.LstdFlags)
	} else {
		log.SetFlags(0)
	}

	log.SetOutput(filter)
}