onWorkerStart里面可以非阻塞监听事件吗 事件可能来自消息队列、Redis?

$worker = new Worker();
$worker->onWorkerStart = function () {
    $redis = new Client('redis://127.0.0.1:6379');
    $redis->subscribe(['news', 'blog'], function ($channel, $message) {
        echo "$channel, $message"; 
    });
};