package logger type Logger interface { Debug(args ...interface{}) Debugf(format string, args ...interface{}) Debugln(args ...interface{}) Info(args ...interface{}) Infof(format string, args ...interface{}) Infoln(args ...interface{}) Error(args ...interface{}) Errorf(format string, args ...interface{}) Errorln(args ...interface{}) Warning(args ...interface{}) Warningf(format string, args ...interface{}) Warningln(args ...interface{}) Panic(args ...interface{}) Panicf(format string, args ...interface{}) Panicln(args ...interface{}) Print(args ...interface{}) Printf(format string, args ...interface{}) Println(args ...interface{}) }