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main.go
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main.go
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/*
* Copyright 2022 CloudWeGo Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"context"
"fmt"
"log"
"os"
"path"
"runtime"
"time"
"github.com/sirupsen/logrus"
"github.com/cloudwego/hertz/pkg/app"
"github.com/cloudwego/hertz/pkg/app/server"
"github.com/cloudwego/hertz/pkg/common/hlog"
"github.com/cloudwego/hertz/pkg/protocol/consts"
hertzlogrus "github.com/hertz-contrib/logger/logrus"
"gopkg.in/natefinch/lumberjack.v2"
)
func main() {
h := server.Default()
// Customizable output directory.
var logFilePath string
dir := "./hlog"
logFilePath = dir + "/logs/"
if err := os.MkdirAll(logFilePath, 0o777); err != nil {
log.Println(err.Error())
return
}
// Set filename to date
logFileName := time.Now().Format("2006-01-02") + ".log"
fileName := path.Join(logFilePath, logFileName)
if _, err := os.Stat(fileName); err != nil {
if _, err := os.Create(fileName); err != nil {
log.Println(err.Error())
return
}
}
// For logrus detailed settings, please refer to https://github.com/hertz-contrib/logger/tree/main/logrus and https://github.com/sirupsen/logrus
logger := hertzlogrus.NewLogger()
logger.Logger().SetReportCaller(true)
// hlog will warp a layer of logrus, so you need to calculate the depth of the caller file separately.
logger.Logger().AddHook(NewCustomHook(10))
// Provides compression and deletion
lumberjackLogger := &lumberjack.Logger{
Filename: fileName,
MaxSize: 20, // A file can be up to 20M.
MaxBackups: 5, // Save up to 5 files at the same time.
MaxAge: 10, // A file can exist for a maximum of 10 days.
Compress: true, // Compress with gzip.
}
logger.SetOutput(lumberjackLogger)
logger.SetLevel(hlog.LevelDebug)
// if you want to output the log to the file and the stdout at the same time, you can use the following codes
// fileWriter := io.MultiWriter(lumberjackLogger, os.Stdout)
// logger.SetOutput(fileWriter)
hlog.SetLogger(logger)
h.GET("/hello", func(ctx context.Context, c *app.RequestContext) {
hlog.Info("Hello, hertz")
c.String(consts.StatusOK, "Hello hertz!")
})
h.Spin()
}
// CustomHook Custom Hook for processing logs
type CustomHook struct {
CallerDepth int
}
func NewCustomHook(depth int) *CustomHook {
return &CustomHook{
CallerDepth: depth,
}
}
func (hook *CustomHook) Levels() []logrus.Level {
return logrus.AllLevels
}
func (hook *CustomHook) Fire(entry *logrus.Entry) error {
// Get caller information and specify depth
pc, file, line, ok := runtime.Caller(hook.CallerDepth)
if ok {
funcName := runtime.FuncForPC(pc).Name()
entry.Data["caller"] = fmt.Sprintf("%s:%d %s", file, line, funcName)
}
return nil
}