php使用Swoole实现毫秒级定时任务的方法

swoole_timer_tick(30000, function($timer) use ($task_id) { // 启用定时器，每30秒执行一次 
  $memPercent = $this->getMemoryUsage(); //计算内存使用率 
  echo date('Y-m-d H:i:s') . '当前内存使用率：'.$memPercent."\n"; 
}); 

swoole_timer_after(120000, function() use ($str) { //2分钟后执行 
  $this->sendReport(); //发送报表 
  echo "send report, $str\n"; 
}); 

swoole_timer_tick(5*60*1000, function($timer) use ($url) { // 启用定时器，每5分钟执行一次 
   $rs = $this->postUrl($url); 

   if ($rs) { 
     //业务代码... 
     swoole_timer_clear($timer); // 停止定时器 
     echo date('Y-m-d H:i:s'). "请求接口任务执行成功\n"; 
   } else { 
     echo date('Y-m-d H:i:s'). "请求接口失败，5分钟后再次尝试\n"; 
   } 
 }); 

namespace Helloweba\Swoole; 

use swoole_server; 

/** 
* 任务调度 
*/ 
class Task 
{ 
  protected $serv; 
  protected $host = '127.0.0.1'; 
  protected $port = 9506; 
  // 进程名称 
  protected $taskName = 'swooleTask'; 
  // PID路径 
  protected $pidPath = '/run/swooletask.pid'; 
  // 设置运行时参数 
  protected $options = [ 
    'worker_num' => 4, //worker进程数,一般设置为CPU数的1-4倍  
    'daemonize' => true, //启用守护进程 
    'log_file' => '/data/log/swoole-task.log', //指定swoole错误日志文件 
    'log_level' => 0, //日志级别 范围是0-5，0-DEBUG，1-TRACE，2-INFO，3-NOTICE，4-WARNING，5-ERROR 
    'dispatch_mode' => 1, //数据包分发策略,1-轮询模式 
    'task_worker_num' => 4, //task进程的数量 
    'task_ipc_mode' => 3, //使用消息队列通信，并设置为争抢模式 
  ]; 

  public function __construct($options = []) 
  { 
    date_default_timezone_set('PRC'); 
    // 构建Server对象，监听127.0.0.1:9506端口 
    $this->serv = new swoole_server($this->host, $this->port); 

    if (!empty($options)) { 
      $this->options = array_merge($this->options, $options); 
    } 
    $this->serv->set($this->options); 

    // 注册事件 
    $this->serv->on('Start', [$this, 'onStart']); 
    $this->serv->on('Connect', [$this, 'onConnect']); 
    $this->serv->on('Receive', [$this, 'onReceive']); 
    $this->serv->on('Task', [$this, 'onTask']);  
    $this->serv->on('Finish', [$this, 'onFinish']); 
    $this->serv->on('Close', [$this, 'onClose']); 
  } 

  public function start() 
  { 
    // Run worker 
    $this->serv->start(); 
  } 

  public function onStart($serv) 

  { 
    // 设置进程名 
    cli_set_process_title($this->taskName); 
    //记录进程id,脚本实现自动重启 
    $pid = "{$serv->master_pid}\\n{$serv->manager_pid}"; 
    file_put_contents($this->pidPath, $pid); 
  } 

  //监听连接进入事件 
  public function onConnect($serv, $fd, $from_id) 
  { 
    $serv->send( $fd, "Hello {$fd}!" ); 
  } 

  // 监听数据接收事件 
  public function onReceive(swoole_server $serv, $fd, $from_id, $data) 
  { 
    echo "Get Message From Client {$fd}:{$data}\n"; 
    //$this->writeLog('接收客户端参数：'.$fd .'-'.$data); 
    $res['result'] = 'success'; 
    $serv->send($fd, json_encode($res)); // 同步返回消息给客户端 
    $serv->task($data); // 执行异步任务 
  } 

  /** 
 
  * @param $serv swoole_server swoole_server对象 
  * @param $task_id int 任务id 
  * @param $from\id int 投递任务的worker_id 
  * @param $data string 投递的数据 
  */ 
  public function onTask(swoole_server $serv, $task_id, $from_id, $data) 
  { 
    swoole_timer_tick(30000, function($timer) use ($task_id) { // 启用定时器，每30秒执行一次 
      $memPercent = $this->getMemoryUsage(); 
      echo date('Y-m-d H:i:s') . '当前内存使用率：'.$memPercent."\n"; 
    }); 
  } 


  /** 
  * @param $serv swoole_server swoole_server对象 
  * @param $task_id int 任务id 
  * @param $data string 任务返回的数据 
  */ 
  public function onFinish(swoole_server $serv, $task_id, $data) 
  { 
    // 
  } 

 
  // 监听连接关闭事件 
  public function onClose($serv, $fd, $from_id) { 
    echo "Client {$fd} close connection\n"; 
  } 

  public function stop() 
  { 
    $this->serv->stop(); 
  } 

  private function getMemoryUsage() 
  { 
    // MEMORY 
    if (false === ($str = @file("/proc/meminfo"))) return false; 
    $str = implode("", $str); 
    preg_match_all("/MemTotal\s{0,}\:+\s{0,}([\d\.]+).+?MemFree\s{0,}\:+\s{0,}([\d\.]+).+?Cached\s{0,}\:+\s{0,}([\d\.]+).+?SwapTotal\s{0,}\:+\s{0,}([\d\.]+).+?SwapFree\s{0,}\:+\s{0,}([\d\.]+)/s", $str, $buf); 
    //preg_match_all("/Buffers\s{0,}\:+\s{0,}([\d\.]+)/s", $str, $buffers); 

    $memTotal = round($buf[1][0]/1024, 2); 
    $memFree = round($buf[2][0]/1024, 2); 
    $memUsed = $memTotal - $memFree; 
    $memPercent = (floatval($memTotal)!=0) ? round($memUsed/$memTotal*100,2):0; 

    return $memPercent; 
  } 
} 

<?php
require dirname(__DIR__) . '/vendor/autoload.php'; 
use Helloweba\Swoole\Task; 
$opt = [ 
  'daemonize' => false 
]; 
$ser = new Task($opt); 
$ser->start(); 

<?php
class Client 
{ 
  private $client; 
  public function __construct() { 
    $this->client = new swoole_client(SWOOLE_SOCK_TCP); 
  } 
  public function connect() { 
    if( !$this->client->connect("127.0.0.1", 9506 , 1) ) { 
      echo "Error: {$this->client->errMsg}[{$this->client->errCode}]\n"; 
     } 
    fwrite(STDOUT, "请输入消息 Please input msg："); 
    $msg = trim(fgets(STDIN)); 
    $this->client->send( $msg ); 
    $message = $this->client->recv(); 
    echo "Get Message From Server:{$message}\n"; 
  } 
} 
$client = new Client(); 
$client->connect(); 

php taskServer.php

[root@localhost public]# php taskClient.php 

Get Message From Server:{"result":"success"} 
[root@localhost public]#