Swoole实现异步投递task任务案例详解

<?php

class Ws {
  public $ws = null;
  public function __construct() {
    $this->ws = new swoole_websocket_server("0.0.0.0", 9501);
    $this->ws->set([
        'worker_num' => 2, //worker进程数
        'task_worker_num' => 2, //task进程数
      ]);
    $this->ws->on("open", [$this, 'onOpen']);
    $this->ws->on("message", [$this, 'onMessage']);
    $this->ws->on("task", [$this, 'onTask']);
    $this->ws->on("finish", [$this, 'onFinish']);
    $this->ws->on("close", [$this, 'onClose']);
    $this->ws->start();
  }

  //建立连接回调
  public function onOpen($ws, $request) {
    echo "{$request->fd}建立了连接";
  }

  //接受消息回调
  public function onMessage($ws, $frame) {
    //worker进程异步投递任务到task_worker进程中
    $data = [
      'fd' => $frame->fd,
    ];
    $ws->task($data);

    //服务器返回
    echo "服务器发送消息:666";
  }

  //完成异步任务回调
  public function onTask($serv, $task_id, $worker_id, $data) {
    var_dump($data);

    //模拟慢速任务
    sleep(5);

    //返回字符串给worker进程——>触发onFinish
    return "success";
  }

  //完成任务投递回调
  public function onFinish($serv, $task_id, $data) {
    //task_worker进程将任务处理结果发送给worker进程
    echo "完成任务{$task_id}投递 处理结果：{$data}";
  }

  //关闭连接回调
  public function onClose($ws, $fd) {
    echo "{$fd}关闭了连接";
  }
}

$obj = new Ws();

php ws_server.php