TimeWheel：一个基于GO实现的时间轮盘定时器.zip

# TimeWheel TimeWheel时间轮盘是实现延时队列的一种方式，方便定时任务的执行。本项目基于Golang实现了一个简单的单轮时间轮盘。 ## 详解 具体的实现过程参考我的博客[手把手教你如何用golang实现一个timewheel时间轮](http://lk668.github.io/2021/04/05/2021-04-05-%E6%89%8B%E6%8A%8A%E6%89%8B%E6%95%99%E4%BD%A0%E5%A6%82%E4%BD%95%E7%94%A8golang%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AAtimewheel/) ## 安装 ```bash go get -u github.com/lk668/timewheel ``` ## 使用 ```go package main import ( "fmt" "time" "github.com/lk668/timewheel" "github.com/lk668/timewheel/example" ) func main() { //初始化一个时间间隔是1s，一共有60个齿轮的时间轮盘，默认轮盘转动一圈的时间是60s tw := timewheel.CreateTimeWheel(1*time.Second, 60, example.TimeWheelDefaultJob) // 启动时间轮盘 tw.Start() if tw.IsRunning() { // 添加一个task // 每隔10s执行一次 // task名字叫task1 // task的创建时间是time.Now() // task执行的任务设置为nil，所以默认执行timewheel的Job，也就是example.TimeWheelDefaultJob fmt.Println(fmt.Sprintf("%v Add task task-5s", time.Now().Format(time.RFC3339))) err := tw.AddTask(5*time.Second, "task-5s", time.Now(), -1, nil) if err != nil { panic(err) } // 该Task执行example.TaskJob fmt.Println(fmt.Sprintf("%v Add task task-2s", time.Now().Format(time.RFC3339))) err = tw.AddTask(2*time.Second, "task-2s", time.Now(), -1, example.TaskJob) if err != nil { panic(err) } } else { panic("TimeWheel is not running") } time.Sleep(10 * time.Second) // 删除task fmt.Println("Remove task task-5s") err := tw.RemoveTask("task-5s") if err != nil { panic(err) } time.Sleep(10 * time.Second) fmt.Println("Remove task task-2s") err = tw.RemoveTask("task-2s") if err != nil { panic(err) } // 关闭时间轮盘 tw.Stop() } ``` 该例子的输出结果如下 ```bash 2021-04-01T18:04:40+08:00 Add task task-5s 2021-04-01T18:04:40+08:00 Add task task-2s 2021-04-01T18:04:43+08:00 This is a task job with key: task-2s 2021-04-01T18:04:45+08:00 This is a task job with key: task-2s 2021-04-01T18:04:46+08:00 This is a timewheel job with key: task-5s 2021-04-01T18:04:47+08:00 This is a task job with key: task-2s 2021-04-01T18:04:49+08:00 This is a task job with key: task-2s Remove task task-5s 2021-04-01T18:04:51+08:00 This is a task job with key: task-2s 2021-04-01T18:04:53+08:00 This is a task job with key: task-2s 2021-04-01T18:04:55+08:00 This is a task job with key: task-2s 2021-04-01T18:04:57+08:00 This is a task job with key: task-2s 2021-04-01T18:04:59+08:00 This is a task job with key: task-2s Remove task task-2s ```