golang日志库logrus的安装和使用
一、安装logrus
执行如下命令，即可按照logrus
go get github.com/sirupsen/logrus如果无法访问 golang ，那么可以先 clone github.com/golang的源码，然后生成
cd $GOPATH/src/golang.org/x
git clone https://github.com/golang/crypto.git
go get -u golang.org/x/crypto/ssh/terminal
git clone https://github.com/golang/sys.git
go get -u golang.org/x/sys/unix二、使用
简单使用示例如下所示：
package main
import (
log "github.com/sirupsen/logrus"
"time"
)
type Animal struct {
Name string
age int
}
func main() {
//log.SetFormatter(&log.JSONFormatter{})
a := Animal{"dog", 22}
log.SetFormatter(&log.TextFormatter{
FullTimestamp:true})
log.WithFields(log.Fields{
"event": "ne",
"topic": "title",
"key": "my key",
}).Info("hello", a)
log.Error("hello world")
for {
time.Sleep(time.Second)
log.Printf("i am ok %s", "dock")
}
log.Fatal("kill ")
}三、将日志写入指定文件
func SetLogFile() {
file := time.Now().Format("20060102") + ".txt" //文件名
logFile, err := os.OpenFile(file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0766)
if nil != err {
panic(err)
}
log.SetOutput(logFile)
}
四、自动拆分日志文件
先安装拆分日志文件的2份源码，如下所示：
go get github.com/lestrrat-go/file-rotatelogs
go get github.com/rifflock/lfshook使用示例如下所示：
package main
import (
log "github.com/sirupsen/logrus"
"github.com/lestrrat-go/file-rotatelogs"
"github.com/rifflock/lfshook"
"time"
"os"
"github.com/pkg/errors"
"path"
)
func main() {
// 24小时一个日志文件，最多存365天的日志文件。 再多了就删掉
ConfigLocalFilesystemLogger("log", "lg", time.Hour*24*365, time.Hour*24)
for {
time.Sleep(time.Second*3)
log.Info("hello ")
}
}
// config logrus log to local filesystem, with file rotation
func ConfigLocalFilesystemLogger(logPath string, logFileName string, maxAge time.Duration, rotationTime time.Duration) {
baseLogPaht := path.Join(logPath, logFileName)
writer, err := rotatelogs.New(
baseLogPaht+".%Y%m%d%H%M",
rotatelogs.WithLinkName(baseLogPaht), // 生成软链，指向最新日志文件
rotatelogs.WithMaxAge(maxAge), // 文件最大保存时间
// rotatelogs.WithRotationCount(365), // 最多存365个文件
rotatelogs.WithRotationTime(rotationTime), // 日志切割时间间隔
)
if err != nil {
log.Errorf("config local file system logger error. %+v", errors.WithStack(err))
}
lfHook := lfshook.NewHook(lfshook.WriterMap{
log.DebugLevel: writer, // 为不同级别设置不同的输出目的
log.InfoLevel: writer,
log.WarnLevel: writer,
log.ErrorLevel: writer,
log.FatalLevel: writer,
log.PanicLevel: writer,
}, &log.TextFormatter{})
log.AddHook(lfHook)
}
将 WithRotationTime 设置为1分钟时，生成的日志文件如下所示：
~/gol/log $ ls
lg lg.201812041357 lg.201812041410 lg.201812041423
lg.201812041344 lg.201812041358 lg.201812041411 lg.201812041424
lg.201812041346 lg.201812041359 lg.201812041412 lg.201812041425
lg.201812041347 lg.201812041400 lg.201812041413 lg.201812041426
lg.201812041348 lg.201812041401 lg.201812041414 lg.201812041427
lg.201812041349 lg.201812041402 lg.201812041415 lg.201812041428
lg.201812041350 lg.201812041403 lg.201812041416 lg.201812041429
lg.201812041351 lg.201812041404 lg.201812041417 lg.201812041430
lg.201812041352 lg.201812041405 lg.201812041418 lg.201812041431
lg.201812041353 lg.201812041406 lg.201812041419 lg.201812041432
lg.201812041354 lg.201812041407 lg.201812041420 lg.201812041433
lg.201812041355 lg.201812041408 lg.201812041421 lg.201812041434
lg.201812041356 lg.201812041409 lg.201812041422 lg.201812041435
尊重他人劳动，原文地址如下：
https://blog.csdn.net/wangjunsheng/article/details/80754156