Function init

utils/log.go:16–64

()

var Logger = zap.NewNop()

// Configure replaces Logger with a stdout logger and, when Path is non-empty,
// a second rolling JSON log destination.
func Configure(cfg config.LogConfig) error {
	if err := cfg.Validate(); err != nil {
		return err
	}

	level := levelMap[cfg.Level]
	encoderConfig := zapcore.EncoderConfig{
		TimeKey:        "ts",
		LevelKey:       "level",
		NameKey:        "logger",
		CallerKey:      "caller",
		MessageKey:     "msg",
		StacktraceKey:  "stacktrace",
		LineEnding:     zapcore.DefaultLineEnding,
		EncodeLevel:    zapcore.LowercaseLevelEncoder,
		EncodeTime:     TimeEncoder,
		EncodeDuration: zapcore.SecondsDurationEncoder,
		EncodeCaller:   zapcore.ShortCallerEncoder,
	}
	encoder := zapcore.NewJSONEncoder(encoderConfig)
	enabler := zap.LevelEnablerFunc(func(candidate zapcore.Level) bool {
		return candidate >= level
	})

	cores := []zapcore.Core{
		zapcore.NewCore(encoder, zapcore.Lock(os.Stdout), enabler),
	}
	if cfg.Path != "" {
		hook := &lumberjack.Logger{
			Filename:   cfg.Path,
			MaxSize:    100,
			MaxBackups: 5,
			MaxAge:     30,
			Compress:   true,
		}
		cores = append(cores, zapcore.NewCore(encoder, zapcore.AddSync(hook), enabler))
	}

	Logger = zap.New(zapcore.NewTee(cores...), zap.AddCaller())
	return nil
}

var levelMap = map[string]zapcore.Level{
	"debug":  zapcore.DebugLevel,
	"info":   zapcore.InfoLevel,
	"warn":   zapcore.WarnLevel,
	"error":  zapcore.ErrorLevel,
	"dpanic": zapcore.DPanicLevel,
	"panic":  zapcore.PanicLevel,
	"fatal":  zapcore.FatalLevel,