From 056c5fa57a797d4d2fb485365f9508154db1c73f Mon Sep 17 00:00:00 2001
From: henry <adobehenry@163.com>
Date: Mon, 31 Aug 2020 15:41:56 +0800
Subject: [PATCH] docs(add a test file): - add an example about the processing
 of logs - if use lfshook.NewHook SetFormatter{}, the log will appears twice.

---
 lfshookLogrus_test.go | 49 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 lfshookLogrus_test.go

diff --git a/lfshookLogrus_test.go b/lfshookLogrus_test.go
new file mode 100644
index 0000000..b010f82
--- /dev/null
+++ b/lfshookLogrus_test.go
@@ -0,0 +1,49 @@
+/**
+* @Author : henry
+* @Data: 2020-08-31 15:20
+* @Note: a example about rotatelogs logrus rotatelogs
+**/
+
+package lfshook
+
+import (
+	"fmt"
+	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
+	"github.com/sirupsen/logrus"
+	"runtime"
+	"time"
+)
+
+var Log *logrus.Logger
+
+func NewLogger() *logrus.Logger {
+	if Log != nil {
+		return Log
+	}
+
+	path := "/var/log/go.log"
+	writer, _ := rotatelogs.New(
+		path+".%Y%m%d%H%M",
+		rotatelogs.WithLinkName(path),
+		rotatelogs.WithMaxAge(time.Duration(86400)*time.Second),
+		rotatelogs.WithRotationTime(time.Duration(604800)*time.Second),
+	)
+
+	pathMap := logrus.Hook(lfshook.NewHook(
+		lfshook.WriterMap{
+			logrus.InfoLevel:  writer,
+			logrus.ErrorLevel: writer,
+		},
+		nil,
+	))
+
+	Log = logrus.New()
+	Log.Hooks.Add(pathMap)
+	Logger.SetFormatter(&logrus.JSONFormatter{
+		CallerPrettyfier: func(f *runtime.Frame) (string, string) {
+			return fmt.Sprintf("%s()", f.Function), fmt.Sprintf("%s:%d", f.File, f.Line)
+		},
+	})
+
+	return Log
+}