Golang函数执行模板(log,耗时,panic)

         有些函数执行前后,需要加日志、记录耗时、还要处理panic,都是些重复性的东西。
 所以弄了个模板式的东西,碰到这类需求,直接把相关函数和参数,丢到run函数去就不用管了,省得浪费时间。

先上个调用例子:

//函数执行模板
//author: Xiong Chuan Liang
//date: 2015-3-19

package main

import (
  "fmt"
  "log"
  "os"

  "utils"
)

func main() {
  log.SetOutput(os.Stdout)

  w := utils.NewWorker()
  w.Run("myPrintf()", myPrintf, "aa", "bb")

}

func myPrintf(args ...interface{}) (int, error) {
  fmt.Println("myPrintf() begin.")
  for _, arg := range args {
    fmt.Println("args:", arg)
  }
  fmt.Println("myPrintf() end.")
  panic("尝试抛出panic错误")
  return 0, nil
}

/*
运行结果:

2015/03/19 13:49:30 [worker.Run()] 函数: myPrintf()
myPrintf() begin.
args: aa
args: bb
myPrintf() end.
2015/03/19 13:49:30 [worker.Run()] panic:
 myPrintf()
 尝试抛出panic错误
2015/03/19 13:49:30 [worker.Run()] 函数:myPrintf() 耗时:0.004000 秒

*/

   调用还是很方便的,传入函数和附带的参数即可.

   实现也很简单:

//函数执行模板
//author: Xiong Chuan Liang
//date: 2015-3-19

package utils

import (
  "fmt"
  "log"
  "time"
)

type workerFunc func(...interface{}) (int, error)

type worker struct {
}

func NewWorker() *worker {
  return &worker{}
}

func (w *worker) Run(name string, workerFunc workerFunc, args ...interface{}) (int, error) {

  now := time.Now()
  log.Println("[worker.Run()] 函数:", name)

  defer func() {
    if r := recover(); r != nil {
      log.Println("[worker.Run()] panic:\n", name, "\n", fmt.Sprint(r))
      w.elasped(name, now, time.Now())
    }
  }()

  ret, err := workerFunc(args...)
  w.elasped(name, now, time.Now())
  return ret, err
}

func (w *worker) elasped(name string, beginTime, endTime time.Time) {
  log.Printf("[worker.Run()] 函数:%s 耗时:%f 秒 \n",
    name, endTime.Sub(beginTime).Seconds())
}

    没多少东西，我也就处理func(...interface{}) (int, error)这类函数，其它没管了。