go-logging

发表于 2017-12-26 更新于 2019-10-26 分类于 Language 阅读次数：本文字数： 6k 阅读时长 ≈ 5 分钟

log4go

[log4go](go get github.com/jeanphorn/log4go)

Log to console
Log to file, support rotate by size or time
log to network, support tcp and udp
Support Json style configuration
Add Category for log
Classify your logs for different output and different usage.
Compatible with the old

安装 go get github.com/jeanphorn/log4go
import log "github.com/jeanphorn/log4go"

配置文件样例

{
    "console": {
        "enable": true,		// wether output the log
        "level": "FINE"		// log level: FINE, DEBUG, TRACE, INFO, WARNING,ERROR, CRITICAL
    },  
    "files": [{
        "enable": true,
        "level": "DEBUG",
        "filename":"./test.log",
        "category": "Test",			// different category log to different files
        "pattern": "[%D %T] [%C] [%L] (%S) %M"		// log output formmat
    },{
        "enable": false,
        "level": "DEBUG",
        "filename":"rotate_test.log",
        "category": "TestRotate",
        "pattern": "[%D %T] [%C] [%L] (%S) %M",
        "rotate": true,								// wether rotate the log
        "maxsize": "500M",
        "maxlines": "10K",
        "daily": true
    }],
    "sockets": [{
        "enable": false,
        "level": "DEBUG",
        "category": "TestSocket",
        "pattern": "[%D %T] [%C] [%L] (%S) %M",
        "addr": "127.0.0.1:12124",
        "protocol":"udp"
    }]  
}

使用样例

package main

import (
	log "github.com/jeanphorn/log4go"
)

func main() {
	// load config file, it's optional
	// or log.LoadConfiguration("./example.json", "json")
	// config file could be json or xml
	log.LoadConfiguration("./example.json")

    // 这里的 Test 是配置文件里面的 category 定义的
    log.LOGGER("Test").Info("category Test info test ...")
    log.LOGGER("Test").Info("category Test info test ... %d", 123)
	log.LOGGER("Test").Info("category Test info test message: %s", "new test msg")
	log.LOGGER("Test").Debug("category Test debug test ...")

	// Other category not exist, test
	log.LOGGER("Other").Debug("category Other debug test ...")

	// socket log test
	log.LOGGER("TestSocket").Debug("category TestSocket debug test ...")

	// original log4go test
	log.Info("nomal info test ...")
	log.Debug("nomal debug test ...")

	log.Close()
}

输出样例

[2017/11/15 14:35:11 CST] [Test] [INFO] (main.main:15) category Test info test ...
[2017/11/15 14:35:11 CST] [Test] [INFO] (main.main:16) category Test info test message: new test msg
[2017/11/15 14:35:11 CST] [Test] [DEBG] (main.main:17) category Test debug test ...
[2017/11/15 14:35:11 CST] [DEFAULT] [INFO] (main.main:26) nomal info test ...
[2017/11/15 14:35:11 CST] [DEFAULT] [DEBG] (main.main:27) nomal debug test ...

logrus

logrus
不支持分割，配置也麻烦。想要同时输出到文件和控制台，不方便。

安装logrus

go get "github.com/Sirupsen/logrus"

使用样例

var logger = logrus.New()
logger.Error("Error accepting:" + err.Error())
logger.Fatal("Error listening: " + err.Error())

func initLog(path string) {

	if val, err := PathExists(path + "/logs/"); err != nil {
		logger.Error("log path not exist exception")
	} else {
		if val == false {
			//0755->即用户具有读/写/执行权限，组用户和其它用户具有读写权限；
			//0644->即用户具有读写权限，组用户和其它用户具有只读权限；
			err := os.MkdirAll(path+"/logs/", 0755)
			if err != nil {
				fmt.Printf("%s", err)
			} else {
				fmt.Print("Create Directory OK!")
			}
		}
	}

	logFileName = path + "/logs/" + time.Now().Format("2006-01-02") + ".log"
	// Create the logger file if doesn't exist. And append to it if it already exists.
	// per-log should be less than 4k
	f, err := os.OpenFile(logFileName, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)

	//Logging to file
	Formatter := new(logrus.TextFormatter)
	Formatter.TimestampFormat = "2006-01-02 15:04:05"
	Formatter.FullTimestamp = true
	logrus.SetFormatter(Formatter)
	if err != nil {
		// Cannot open logger file. Logging to stderr
		fmt.Println(err)
	} else {
		logger.Out = f
	}
	logger.Info("logger setup ok. gisHelper app started.")

	// Fatal handlers
	handler := func() {
		// gracefully shutdown something...
		logger.Error("FOUND a fatal error, app will exit.")
		Email(logFileName)
	}
	logrus.RegisterExitHandler(handler)

}

func PathExists(path string) (bool, error) {
	_, err := os.Stat(path)
	if err == nil {
		return true, nil
	}
	if os.IsNotExist(err) {
		return false, nil
	}
	return false, err
}

发送邮件通知

func Email(logFileName string) error {
	//logger:= logger.New()
	//parameter"APPLICATION_NAME", "HOST", PORT, "FROM", "TO"
	//首先开启smtp服务，最后两个参数是smtp的用户名和密码
	hook, err := logrus_mail.NewMailAuthHook("xx server", "smtp.126.com", 25, "xx@126.com", "xx@126.com", "xxx", "xxx")
	if err == nil {
		logger.Hooks.Add(hook)
	}
	//生成*Entry
	contextLogger := logger.WithFields(logrus.Fields{
		"file":    logFileName,
		"content": "logfile.logger.zip www",
	})
	//设置时间戳和message
	contextLogger.Time = time.Now()
	contextLogger.Message = "gisHelper has error! " + logFileName
	//只能发送Error,Fatal,Panic级别的log
	contextLogger.Level = logrus.ErrorLevel

	//使用Fire发送,包含时间戳，message
	err = hook.Fire(contextLogger)
	if err == nil {
		logger.Error("发送错误日志邮件成功")
		return nil
	} else {
		logger.Error("发送错误日志邮件失败")
		fmt.Println("发送邮件失败：")
		fmt.Println(err)
		return errors.New("发送错误日志邮件失败")
	}
}

遇到问题： unrecognized import path “golang.org/x/crypto/ssh/terminal
go get被墙了造成的。

解决方法：
引用
使用了shadowsock代理翻墙。

brew install polipo
首先要修改自动启动的配置文件
/usr/local/opt/polipo/homebrew.mxcl.polipo.plist，需要给polipo命令加上命令行参数 socksParentProxy=localhost:1080
<array>
    <string>/usr/local/opt/polipo/bin/polipo</string>
    <string>socksParentProxy=localhost:1080</string>
</array>

执行下面命令
ln -sfv /usr/local/opt/polipo/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents

polipo进程默认监听8123端口，在命令行执行下面命令，就可以使用代理了。
export http_proxy=http://localhost:8123
export https_proxy=http://localhost:8123
export ftp_proxy=http://localhost:8123

git config --globle http.proxy 127.0.0.1:8123
git config --globle https.proxy 127.0.0.1:8123