Golang Command任务队列命令模式示例

type Command interface {
    Execute()
}

type PrintCommand struct {
    Message string
}
<p>func (p *PrintCommand) Execute() {
fmt.Println("打印消息:", p.Message)
}</p><p>type SaveToFileCommand struct {
Filename string
Data     string
}</p><p>func (s *SaveToFileCommand) Execute() {
fmt.Printf("保存数据到文件 %s: %s\n", s.Filename, s.Data)
}</p>

type Worker struct {
    commands chan Command
}
<p>func NewWorker(queueSize int) *Worker {
return &Worker{
commands: make(chan Command, queueSize),
}
}</p><p>func (w *Worker) AddCommand(cmd Command) {
w.commands <- cmd
}</p><p>func (w *Worker) Start() {
go func() {
for cmd := range w.commands {
cmd.Execute()
}
}()
}</p>

func main() {
    worker := NewWorker(10)
    worker.Start()
<pre class='brush:php;toolbar:false;'>// 提交命令
worker.AddCommand(&PrintCommand{Message: "Hello, Command Pattern!"})
worker.AddCommand(&SaveToFileCommand{
    Filename: "log.txt",
    Data:     "系统日志记录",
})
worker.AddCommand(&PrintCommand{Message: "任务处理完成"})

// 留出时间执行
time.Sleep(time.Second)

打印消息: Hello, Command Pattern!
保存数据到文件 log.txt: 系统日志记录
打印消息: 任务处理完成