func NewJSONLogger()

in logs/json/json.go [41:73]

• 32 lines of code
• 3 McCabe index (conditional complexity)

func NewJSONLogger(infoStream, errorStream zapcore.WriteSyncer, encoderConfig *zapcore.EncoderConfig) (logr.Logger, func()) {
	if encoderConfig == nil {
		encoderConfig = &zapcore.EncoderConfig{
			MessageKey:     "msg",
			CallerKey:      "caller",
			TimeKey:        "ts",
			EncodeTime:     epochMillisTimeEncoder,
			EncodeDuration: zapcore.StringDurationEncoder,
			EncodeCaller:   zapcore.ShortCallerEncoder,
		}
	}

	encoder := zapcore.NewJSONEncoder(*encoderConfig)
	var core zapcore.Core
	if errorStream == nil {
		core = zapcore.NewCore(encoder, infoStream, zapcore.Level(-127))
	} else {
		highPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
			return lvl >= zapcore.ErrorLevel
		})
		lowPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
			return lvl < zapcore.ErrorLevel
		})
		core = zapcore.NewTee(
			zapcore.NewCore(encoder, errorStream, highPriority),
			zapcore.NewCore(encoder, infoStream, lowPriority),
		)
	}
	l := zap.New(core, zap.WithCaller(true))
	return zapr.NewLoggerWithOptions(l, zapr.LogInfoLevel("v"), zapr.ErrorKey("err")), func() {
		l.Sync()
	}
}