package logrus_hook

import (

    "runtime"

    "strings"

    "path/filepath"

    log "github.com/Sirupsen/logrus"

)

type ContextHook struct {

}

func (hook ContextHook)Levels() []log.Level {

    return log.AllLevels

}

func (hook ContextHook)Fire(entry *log.Entry) error {

    pc := make([]uintptr, 10)

       //表示自身栈中跳过6个栈帧数  并且把栈中剩余信息写入pc中。

             //0表示Callers自身的调用栈，1表示Callers所在的调用栈

    runtime.Callers(6, pc)

       //

    frames := runtime.CallersFrames(pc)

    frame, _ := frames.Next()

    funcName := frame.Func.Name()

    funcName = funcName[strings.LastIndexByte(funcName, filepath.Separator) + 1 :]

    fileName := frame.File[strings.LastIndexByte(frame.File, filepath.Separator) + 1:]

    entry.Data["file"] = fileName

    entry.Data["func"] = funcName

    entry.Data["line"] = frame.Line

    //for {

    //    frame, more := frames.Next()

    //    println(frame.File)

    //    println(frame.Func.Name())

    //    println(frame.Line)

    //    println("")

    //

    //    if !more{

    //        break

    //    }

    //}

    return nil

}

func init() {

    log.AddHook(ContextHook{})

}