如何使用swoole实现对redis数据变化的监听？

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使用Swoole监听Redis数据，首先确保Redis已正确安装并正常运行。以下是一个简单的Laravel示例，展示如何使用Swoole监听Redis事件：

php

use Illuminate\Broadcasting\Channel;use Illuminate\Broadcasting\InteractsWithSockets;use Illuminate\Broadcasting\PresenceChannel;use Illuminate\Broadcasting\PrivateChannel;use Illuminate\Contracts\Broadcasting\ShouldBroadcast;use Illuminate\Foundation\Events\Dispatchable;use Illuminate\Queue\SerializesModels;

class RedisTest{ use Dispatchable, InteractsWithSockets, SerializesModels;

public function __construct() { // 初始化Swoole监听Redis $this->initSwooleRedisListener(); }

private function initSwooleRedisListener() { go(function () { $server=new Swoole\Server(127.0.0.1, 6379); $server->on('receive', function ($server, $fd, $from_id, $data) { echo Received: $data\n; }); $server->start(); }); }}

swoole如何监听redis数据？

Laravel使用swoole监听redis

开始之前，请先确保redis已经正确安装，并正常运行。

Laravel代码

在App\Events目录下新建RedisTest事件

<?php namespace App\Events; use Illuminate\Broadcasting\Channel; use Illuminate\Queue\SerializesModels; use Illuminate\Broadcasting\PrivateChannel; use Illuminate\Broadcasting\PresenceChannel; use Illuminate\Foundation\Events\Dispatchable; use Illuminate\Broadcasting\InteractsWithSockets; use Illuminate\Contracts\Broadcasting\ShouldBroadcast; class RedisTest { use Dispatchable, InteractsWithSockets, SerializesModels; public $message; /** * Create a new event instance. * * @return void */ public function __construct($message) { $this->message = $message; } /** * Get the channels the event should broadcast on. * * @return \Illuminate\Broadcasting\Channel|array */ public function broadcastOn() { return new PrivateChannel('channel-name'); } }

App\Listeners\RedisTestListener 监听事件代码

<?php namespace App\Listeners; use App\Events\RedisTest; use Illuminate\Queue\InteractsWithQueue; use Illuminate\Contracts\Queue\ShouldQueue; use Illuminate\Support\Facades\Log; class RedisTestListener { /** * Create the event listener. * * @return void */ public function __construct() { // } /** * Handle the event. * * @param RedisTest $event * @return void */ public function handle(RedisTest $event) { $message = $event->message; Log::info('the message received from subscribed redis channel msg_0: '.$message); } }

App\Providers\EventServiceProvider 登记事件/监听关系

protected $listen = [ 'App\Events\RedisTest' => [ 'App\Listeners\RedisTestListener', ], ];

监听命令

App\Console\Commands\RedisSubscribe 代码如下

<?php namespace App\Console\Commands; use Illuminate\Console\Command; use swoole_redis; use Illuminate\Support\Facades\Event; use App\Events\RedisTest; class RedisSubscribe extends Command { /** * The name and signature of the console command. * * @var string */ protected $signature = 'redis:subscribe'; /** * The console command description. * * @var string */ protected $description = 'deamon process to subscribe redis broadcast'; /** * Create a new command instance. * * @return void */ public function __construct() { parent::__construct(); } /** * Execute the console command. * * @return mixed */ public function handle() { $client = new swoole_redis; $client->on('message', function (swoole_redis $client, $result) { var_dump($result); static $more = false; if (!$more and $result[0] == 'message') { echo "trigger Event RedisTest\n"; Event::fire(new RedisTest($result[2])); } }); $client->connect('127.0.0.1', 6379, function (swoole_redis $client, $result) { echo "connect\n"; $client->subscribe('msg_0'); }); } }

Laravel部分代码完成

==================================

supervisor 管理进程

在 /etc/supervisor/conf.d 文件夹下新建 echo.conf , 代码如下

[group:echos] programs=echo-queue,echo-redis [program:echo-queue] command=php artisan queue:work directory=/home/bella/Downloads/lnmp/echo1.0/echo user=bella autorestart=true redirect_stderr=true stdout_logfile=/home/bella/Downloads/lnmp/echo1.0/echo/storage/logs/queue.log loglevel=info [program:echo-redis] command=php artisan redis:subscribe directory=/home/bella/Downloads/lnmp/echo1.0/echo user=bella autorestart=true redirect_stderr=true stdout_logfile=/home/bella/Downloads/lnmp/echo1.0/echo/storage/logs/redis.log loglevel=info

完成后，执行以下命令重载

supervisorctl reload

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进入redis 客户端，发布一个广播通知到 msg_0 频道

publish msg_0 "Hello Bella"

如果 laravel目录下的 storage\logs\laravel.log 最后的日志中记录了广播发送的通知，则redis监听功能实现

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