使用PHP和RabbitMQ实现消息队列的延迟功能

docker exec -ti rabbitmq bash
cd /opt/rabbitmq/plugins/
wget https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/releases/download/3.9.0/rabbitmq_delayed_message_exchange-3.9.0.ez

rabbitmq-plugins enable rabbitmq_delayed_message_exchange

rabbitmq-plugins list -e

curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

vim composer.json
{
    "require": {
        "php-amqplib/php-amqplib": "3.6.*"
    }
}

composer install

vim producer.php
<?php
require_once __DIR__ . '/vendor/autoload.php';
use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
 
// 连接到RabbitMQ服务器
$connection = new AMQPStreamConnection('rabbitmq', 5672, 'guest', 'guest');
$channel = $connection->channel();
 
// 声明一个具有延迟插件的自定义交换机
$args = new \PhpAmqpLib\Wire\AMQPTable([
    'x-delayed-type' => \PhpAmqpLib\Exchange\AMQPExchangeType::FANOUT // 这里假设我们使用 direct 类型的交换机
]);
$channel->exchange_declare('delayed_exchange', 'x-delayed-message', false, true, false, false, false, $args);
 
$messageBody = 'Hello Max!';
$delay = 5000; // 延迟5秒，单位是毫秒
$headers = new \PhpAmqpLib\Wire\AMQPTable(['x-delay' => $delay]);
$message = new AMQPMessage($messageBody, ['delivery_mode' => 2]);
$message->set('application_headers', $headers);
 
// 发布消息到交换机
$channel->basic_publish($message, 'delayed_exchange', 'delayed_key');
 
echo "Sent {$messageBody} with delay {$delay}ms\n";
$datetime = date('Y/m/d H:i:s');
echo "成功发送延迟消息 : {$messageBody} , {$datetime} \n";
 
// 关闭连接
$channel->close();
$connection->close();

vim consumer.php
<?php
require_once __DIR__ . '/vendor/autoload.php';
use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
 
// 连接到RabbitMQ服务器
$connection = new AMQPStreamConnection('rabbitmq', 5672, 'guest', 'guest');
$channel = $connection->channel();
 
// 声明一个具有延迟插件的自定义交换机
$args = new \PhpAmqpLib\Wire\AMQPTable([
    'x-delayed-type' => \PhpAmqpLib\Exchange\AMQPExchangeType::FANOUT // 这里假设我们使用 direct 类型的交换机
]);
$channel->exchange_declare('delayed_exchange', 'x-delayed-message', false, true, false, false, false, $args);
 
// 声明死信队列
$channel->queue_declare(
    'delayed_queue',
    false,
    true,
    false,
    false,
    false,
    new \PhpAmqpLib\Wire\AMQPTable([
        'x-dead-letter-exchange' => 'delayed'
    ])
);
 
// 绑定队列到交换机
$channel->queue_bind('delayed_queue', 'delayed_exchange', 'delayed_key');
 
echo "正在等待延迟队列消息, waiting... \n";
 
$callback = function (AMQPMessage $message) {
    //$headers = $message->get('application_headers');
    //$nativeData = $headers->getNativeData();
    echo $message->body . '-------' . date('Y/m/d H:i:s') . "\n";
    $message->ack();
};
 
$channel->basic_consume(
    'delayed_queue',
    '',
    false,
    false,
    false,
    false,
    $callback
);
 
while ($channel->is_consuming()) {
    $channel->wait();
}
 
// 关闭连接
$channel->close();
$connection->close();

php consumer.php

php producer.php