package log type Fields map[string]interface{} type Logger interface { WithField(key string, value interface{}) Logger WithFields(fields Fields) Logger Trace(args ...interface{}) Tracef(format string, args ...interface{}) Debug(args ...interface{}) Debugf(format string, args ...interface{}) Info(args ...interface{}) Infof(format string, args ...interface{}) Warn(args ...interface{}) Warnf(format string, args ...interface{}) Error(args ...interface{}) Errorf(format string, args ...interface{}) Panic(args ...interface{}) Panicf(format string, args ...interface{}) Fatal(args ...interface{}) Fatalf(format string, args ...interface{}) }