RabbitMQ 消息队列 - topic 模式分发消息

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https://blog.csdn.net/column/details/15500.html

topic 模式

根据 Binding 指定的 RoutingKey, Exchange 对 key 进行模式匹配后投递到相应的 Queue, 模式匹配时符号 "#" 匹配一个或多个词, 符号 "*" 匹配正好一个词, 而且单词与单词之间必须要用 "." 符号进行分隔

p_topic.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_topic'; //交换机名
$routeKey1 = 'test.key.one'; //路由key1
$routeKey2 = 'test.key.two'; //路由key2
$routeKey3 = 'test.key.three'; //路由key3

$message1 = 'route_key = '.$routeKey1;
$message2 = 'route_key = '.$routeKey2;
$message3 = 'route_key = '.$routeKey3;

//创建连接和channel
$conn = new AMQPConnection($conn_args);
$conn->connect() or die("Cannot connect to the broker!\n");

$channel = new AMQPChannel($conn);

//创建交换机对象
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_TOPIC);
$exchange->setFlags(AMQP_DURABLE);
$exchange->declareExchange();

//发送消息
echo "Send Message:".$exchange->publish($message1, $routeKey1)."\n";
echo "Send Message:".$exchange->publish($message2, $routeKey2)."\n";
echo "Send Message:".$exchange->publish($message3, $routeKey3)."\n";

$conn->disconnect();
?>

c_topic_1.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_topic'; //交换机名
$queueName = 'test_topic_1'; //队列名
$routeKey = 'test.#'; //路由key

//创建连接和channel
$conn = new AMQPConnection($conn_args);
$conn->connect() or die("Cannot connect to the broker!\n");

$channel = new AMQPChannel($conn);

//创建交换机对象
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_TOPIC);
$exchange->setFlags(AMQP_DURABLE);
$exchange->declareExchange();

$queue = new AMQPQueue($channel);
$queue->setName($queueName);
$queue->setFlags(AMQP_DURABLE);
$queue->declareQueue();
$queue->bind($exchangeName, $routeKey);

echo "Message:\n";
while(True){
    $queue->consume('processMessage');
    //自动ACK应答
    //$queue->consume('processMessage', AMQP_AUTOACK);
}

$conn->disconnect();

/*
 * 消费回调函数
 * 处理消息
 */
function processMessage($envelope, $q) {
    $msg = $envelope->getBody();
    echo $msg."\n"; //处理消息
    $q->ack($envelope->getDeliveryTag()); //手动发送ACK应答
}
?>

c_topic_2.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_topic'; //交换机名
$queueName = 'test_topic_2'; //队列名
$routeKey = 'test.*.one'; //路由key

//创建连接和channel
$conn = new AMQPConnection($conn_args);
$conn->connect() or die("Cannot connect to the broker!\n");

$channel = new AMQPChannel($conn);

//创建交换机对象
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_TOPIC);
$exchange->setFlags(AMQP_DURABLE);
$exchange->declareExchange();

$queue = new AMQPQueue($channel);
$queue->setName($queueName);
$queue->setFlags(AMQP_DURABLE);
$queue->declareQueue();
$queue->bind($exchangeName, $routeKey);

echo "Message:\n";
while(True){
    $queue->consume('processMessage');
    //自动ACK应答
    //$queue->consume('processMessage', AMQP_AUTOACK);
}

$conn->disconnect();

/*
 * 消费回调函数
 * 处理消息
 */
function processMessage($envelope, $q) {
    $msg = $envelope->getBody();
    echo $msg."\n"; //处理消息
    $q->ack($envelope->getDeliveryTag()); //手动发送ACK应答
}
?>

分别执行 c_topic_1.php c_topic_2.php 等待消费消息, 然后执行 p_topic.php 生产消息

# php c_topic_1.php
Message:
route_key = test.key.one
route_key = test.key.two
route_key = test.key.three

# php c_topic_2.php
Message:
route_key = test.key.one

# php p_topic.php
Send Message:1
Send Message:1
Send Message:1

RabbitMQ 消息队列 - topic 模式分发消息

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