为了添加日志切割归档功能,我们将使用第三方库Lumberjack来实现。
安装
执行下面的命令安装Lumberjack
go get -u github.com/natefinch/lumberjack
zap logger中加入Lumberjack
要在zap中加入Lumberjack支持,我们需要修改WriteSyncer代码。我们将按照下面的代码修改getLogWriter()函数:
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func getLogWriter() zapcore.WriteSyncer {
lumberJackLogger := &lumberjack.Logger{
Filename: "./test.log",
MaxSize: 10,
MaxBackups: 5,
MaxAge: 30,
Compress: false,
}
return zapcore.AddSync(&lumberJackLogger)
}
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Lumberjack Logger采用以下属性作为输入:
Filename: 日志文件的位置
MaxSize:在进行切割之前,日志文件的最大大小(以MB为单位)
MaxBackups:保留旧文件的最大个数
MaxAges:保留旧文件的最大天数
Compress:是否压缩/归档旧文件
测试所有功能
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package main
import (
"net/http"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
lumberjack "gopkg.in/natefinch/lumberjack.v2"
)
var sugarLogger *zap.SugaredLogger
func main() {
InitLogger()
defer sugarLogger.Sync()
for i:=0; i < 10000;i++ {
simpleHttpGet("www.baidu.com")
simpleHttpGet("http://www.baidu.com")
}
}
func InitLogger() {
writeSyncer := getLogWriter()
encoder := getEncoder()
core := zapcore.NewCore(encoder, writeSyncer, zapcore.DebugLevel)
logger := zap.New(core, zap.AddCaller())
sugarLogger = logger.Sugar()
}
func getEncoder() zapcore.Encoder {
encoderConfig := zap.NewProductionEncoderConfig()
encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
encoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder
return zapcore.NewConsoleEncoder(encoderConfig)
}
func getLogWriter() zapcore.WriteSyncer {
lumberJackLogger := &lumberjack.Logger{
Filename: "/aseit-data/gocode/src/gitlab.aseit.cn/AI_PRODUCT/psd_be_zhang/test/test.log", // ⽇志⽂件路径
MaxSize: 1, // 1M=1024KB=1024000byte
MaxBackups: 5, // 最多保留5个备份
MaxAge: 30, // days
Compress: false, // 是否压缩 disabled by default
}
return zapcore.AddSync(lumberJackLogger)
}
func simpleHttpGet(url string) {
sugarLogger.Debugf("Trying to hit GET request for %s", url)
resp, err := http.Get(url)
if err != nil {
sugarLogger.Errorf("Error fetching URL %s : Error = %s", url, err)
} else {
sugarLogger.Infof("Success! statusCode = %s for URL %s", resp.Status, url)
resp.Body.Close()
}
}
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同时,可以在main函数中循环记录日志,测试日志文件是否会自动切割和归档(日志文件每1MB会切割并且在当前目录下最多保存5个备份)。
补充:golang zap日志的使用
zap是一个高性能日志库,github链接【传送门】,下面简单介绍一下zap的使用。
1.下载zap包
因为zap是uber开源的,zap内使用的包是在go.uber.org/zap,如果直接go get这个包,可能会提示get不下来。可以go get github.com/uber-go/zap,然后再把zap目录复制到src/go.uber.org下(可能还会需要go.uber.org/atomic和go.uber.org/multierr,均可参考该方法get下来)
2.zap简单封装示例。
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package logger
import (
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
// error logger
var errorLogger *zap.SugaredLogger
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,
}
func getLoggerLevel(lvl string) zapcore.Level {
if level, ok := levelMap[lvl]; ok {
return level
}
return zapcore.InfoLevel
}
func init() {
fileName := "zap.log"
level := getLoggerLevel("debug")
syncWriter := zapcore.AddSync(&lumberjack.Logger{
Filename: fileName,
MaxSize: 1 << 30, //1G
LocalTime: true,
Compress: true,
})
encoder := zap.NewProductionEncoderConfig()
encoder.EncodeTime = zapcore.ISO8601TimeEncoder
core := zapcore.NewCore(zapcore.NewJSONEncoder(encoder), syncWriter, zap.NewAtomicLevelAt(level))
logger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))
errorLogger = logger.Sugar()
}
func Debug(args ...interface{}) {
errorLogger.Debug(args...)
}
func Debugf(template string, args ...interface{}) {
errorLogger.Debugf(template, args...)
}
func Info(args ...interface{}) {
errorLogger.Info(args...)
}
func Infof(template string, args ...interface{}) {
errorLogger.Infof(template, args...)
}
func Warn(args ...interface{}) {
errorLogger.Warn(args...)
}
func Warnf(template string, args ...interface{}) {
errorLogger.Warnf(template, args...)
}
func Error(args ...interface{}) {
errorLogger.Error(args...)
}
func Errorf(template string, args ...interface{}) {
errorLogger.Errorf(template, args...)
}
func DPanic(args ...interface{}) {
errorLogger.DPanic(args...)
}
func DPanicf(template string, args ...interface{}) {
errorLogger.DPanicf(template, args...)
}
func Panic(args ...interface{}) {
errorLogger.Panic(args...)
}
func Panicf(template string, args ...interface{}) {
errorLogger.Panicf(template, args...)
}
func Fatal(args ...interface{}) {
errorLogger.Fatal(args...)
}
func Fatalf(template string, args ...interface{}) {
errorLogger.Fatalf(template, args...)
}
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3.简单封装后使用示例:
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package main
import (
"logger"
)
func main() {
logger.Infof("simple zap logger example")
}
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以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。如有错误或未考虑完全的地方,望不吝赐教。
原文链接:https://blog.csdn.net/qq_39503880/article/details/109488068