logrus日志框架一些用法

logrus.go

func test1() {
	var log = logrus.New()
	log.SetReportCaller(true)
	log.Level = logrus.TraceLevel
	log.Out = os.Stdout

	log.Formatter = &logrus.JSONFormatter{
		PrettyPrint: true,
		FieldMap: logrus.FieldMap{
			logrus.FieldKeyLevel: "my_level",
		},
		DisableTimestamp: true,
		CallerPrettyfier: func(f *runtime.Frame) (string, string) {
			s := strings.Split(f.Function, ".")
			funcname := s[len(s)-1]
			dir, filename := path.Split(f.File)
			tmpArray := strings.Split(dir, string(os.PathSeparator))
			if len(tmpArray) <= 3 {
				filename = f.File // 比较短就直接显示
			} else {
				tmpArray = tmpArray[len(tmpArray)-3:]
				filename = strings.Join(tmpArray, string(os.PathSeparator)) + filename
			}
			return funcname, filename
		},
	}

	

	log.WithFields(logrus.Fields{
		"key1": "value1",
		"size": 10,
	}).Info("this is simple")

	log.Info("the big is one")

	log.Error("this is the error")

	log.WithTime(time.Now()).Traceln("error")
}