swoole异步任务task处理慢请求简单实例

1.根据php版本下载对应的swoole扩展版本进行编译安装，步骤安装官方手册进行安装即可
2.创建一个异步服务器程序Server，只能用于php-cli环境，以thinkphp5为例复制public目录下的入口文件index.php到cli目录cli.php里


4.application目录下创建cli目录控制器TaskServer.php，代码如下：

<?php
namespace app\cli\controller;

/**
 * 后台任务
 */
class Taskserver
{
    private $serv;

    public function start()
    {
        $this->serv = new \Swoole\Server('0.0.0.0', 9504);
        $this->serv->set(array(
            'worker_num' => 4,//为CPU核数的1-4倍
            'task_worker_num' => 4,
            'max_request' => 10000,//最大请求
            'daemonize' => 0,//1为守护进程
            // 'log_file'=>"/www/log/service/cli/task.log"//日志文件
        ));

        $this->serv->on('Start',function($serv){
            echo 'server start!';
        });

        $this->serv->on('Receive', function($serv, $fd, $from_id, $data) {
            echo $data.PHP_EOL;
            if (!$data)
            {
                echo "data error!";
                $serv->send($fd,'fail');
            }
            else
            {
                $task_id = $serv->task($data);
                $serv->send($fd,'ok');
                echo "Dispath AsyncTask: id=$task_id".PHP_EOL;
            }
        });

        $this->serv->on('Task', function ($serv, $task_id, $from_id, $data) {
            echo "New AsyncTask[id=$task_id,from_id=$from_id]".PHP_EOL;
                        //这里写入具体执行内容
            $serv->finish("$data -> OK".PHP_EOL);
        });

        $this->serv->on('Finish', function ($serv, $task_id, $data) {
            echo "AsyncTask[$task_id] Finish: $data\r\n\r\n";
        });

        $this->serv->start();
    }

5.在linux环境中执行,php安装路径+项目路径

/usr/local/php7/bin/php /www/tp5/cli/cli.php Cli/Taskserver/start

如屏幕输出则创建成功
6.编写api控制器index.php同步client客户端

        $client = new \swoole_client(SWOOLE_SOCK_TCP);
        if (!$client->connect('0.0.0.0', 9504, 0.5))
        {
            exit("connect failed. Error: {$client->errCode}\n");
        }
        $client->send("hello world\n");
        echo $client->recv();
        $client->close();

执行index.php,在linux屏幕可看到执行结果