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: 2015-3-19package mainimport ("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: aaargs: bbmyPrintf() 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: 2015-3-19package utilsimport ("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。
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MAIL: xcl_168@aliyun.com
可就是这样，还是有人，期望过多的温暖。
