func initLogger(filePath string, atomicLevel *zap.AtomicLevel, fields ...zap.Field) (*FMLogger, error) {
	// 创建日志配置
	var encoderConfig = zap.NewProductionEncoderConfig()
	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder

	// 创建Console输出Core
	consoleEncoder := zapcore.NewJSONEncoder(encoderConfig)
	consoleCore := zapcore.NewCore(consoleEncoder, zapcore.Lock(os.Stdout), atomicLevel)

	// 创建日志输出Core
	fmt.Printf("Init logger setting: MaxSize: %d, MaxAge: %d, MaxBackups: %d, logPath: %s\n", 
		config.GlobalConfig.LogRotateSize, config.GlobalConfig.LogMaxAge, config.GlobalConfig.LogBackupCount, filePath)
	fileWriter := zapcore.AddSync(&lumberjack.Logger{
		Filename:   filePath,
		MaxSize:    config.GlobalConfig.LogRotateSize, 	// megabytes
		MaxAge: 	config.GlobalConfig.LogMaxAge, 		// backup log files 7 Days
		MaxBackups: config.GlobalConfig.LogBackupCount,	// backup log files 100
		Compress:   true,
	})
	fileCore := zapcore.NewCore(
		zapcore.NewJSONEncoder(encoderConfig),
		fileWriter,
		atomicLevel,
	)

	cores := zapcore.NewTee(fileCore, consoleCore)
	log := zap.New(cores)
	log = log.WithOptions(
		zap.ErrorOutput(os.Stdout), // error message output to stdout
		zap.AddCaller(),            // add function caller info to log
		zap.AddCallerSkip(1),       // make stack having right depth to get function call
		zap.Fields(fields...),      // add common log info, like local_ip
	)

	logger := FMLogger{
		logger: log.Sugar(),
		ctx:    context.Background(),
	}

	return &logger, nil
}

fileWriter := zapcore.AddSync(&lumberjack.Logger{
		Filename:   filePath,
		MaxSize:    config.GlobalConfig.LogRotateSize, 	// megabytes
		MaxAge: 	config.GlobalConfig.LogMaxAge, 		// backup log files 7 Days
		MaxBackups: config.GlobalConfig.LogBackupCount,	// backup log files 100
		Compress:   true,
	})