go日志库中的logrus

go get github.com/sirupsen/logrus

import (
  log "github.com/sirupsen/logrus"
)
log.Println("标准log")

import (
  log "github.com/sirupsen/logrus"
)

func main() {
  log.Info("info")
}

log.WithFields(log.Fields{
  "flag":    true,
  "name": "zhangsan",
  }).Fatal("fatal")

log.SetFormatter(&log.JSONFormatter{})
log.SetFormatter(&log.TextFormatter{
  ForceColors:   true,
  FullTimestamp: true,
  })
log.SetOutput(os.Stdout)
log.SetLevel(log.WarnLevel)

file, err := os.OpenFile("logs/cus.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err == nil {
    log.Out = file
} else {
    log.Info("Failed to log to file, using default stderr")
}

writer, err := rotatelogs.New(
    "文件名"+".%Y%m%d%H%M", // 分割后的文件名称
    rotatelogs.WithLinkName("文件名"),      // 生成软链，指向最新日志文件
    rotatelogs.WithMaxAge(time.Hour*24*365),             // 设置最大保存时间
    rotatelogs.WithRotationTime(time.Hour*24), // 设置日志切割时间间隔
)

if err != nil {
    log.Errorf("config local file system logger error", err)
}

lfHook := lfshook.NewHook(lfshook.WriterMap{
    logrus.DebugLevel: writer, // 为不同级别设置不同的输出目的
    logrus.InfoLevel:  writer,
    logrus.WarnLevel:  writer,
    logrus.ErrorLevel: writer,
    logrus.FatalLevel: writer,
    logrus.PanicLevel: writer,
}, &logrus.TextFormatter{DisableColors: true})
//最后加入hook
log.AddHook(lfHook)