Go lang logger interface

logger.go

package logger

type Logger interface {
	Debug(args ...interface{})
	Debugln(args ...interface{})
	Info(args ...interface{})
	Infoln(args ...interface{})
	Warn(args ...interface{})
	Warnln(args ...interface{})
	Error(args ...interface{})
	Errorln(args ...interface{})
	Fatal(args ...interface{})
	Fatalln(args ...interface{})
}

type Lazy struct {
	Fn func() string
}

func (l Lazy) String() string {
	return l.Fn()
}