RabbitMQ 消息队列 - fanout 模式分发消息

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

fanout 模式

将同一个 message 发送到所有同该 Exchange 绑定的 queue, 只要 RoutingKey 是一样, 这条消息都会被投递到所有与此 Exchange 绑定的 queue 中

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p_fanout.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_fanout'; //交换机名
$routeKey = 'key_fanout'; //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_FANOUT);
$exchange->setFlags(AMQP_DURABLE);
$exchange->declareExchange();

//发送消息
for($i=0; $i<5; ++$i){
    //消息内容
    $message = "TEST MESSAGE! ".$i;
    echo "Send Message:".$exchange->publish($message, $routeKey)."\n";
}

$conn->disconnect();
?>

c_fanout_1.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_fanout'; //交换机名
$queueName = 'test_fanout_1'; //队列名
$routeKey = 'key_fanout'; //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_FANOUT);
$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_fanout_2.php

<?php
//配置信息
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_fanout'; //交换机名
$queueName = 'test_fanout_2'; //队列名
$routeKey = 'key_fanout'; //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_FANOUT);
$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
}
?>

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分别执行 c_fanout_1.php c_fanout_2.php 等待消费消息, 然后执行 p_fanout.php 生产消息

# php c_fanout_1.php
Message:
TEST MESSAGE! 0
TEST MESSAGE! 1
TEST MESSAGE! 2
TEST MESSAGE! 3
TEST MESSAGE! 4

# php c_fanout_2.php
Message:
TEST MESSAGE! 0
TEST MESSAGE! 1
TEST MESSAGE! 2
TEST MESSAGE! 3
TEST MESSAGE! 4

# php p_fanout.php
Send Message:1
Send Message:1
Send Message:1
Send Message:1
Send Message:1

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