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RabbitMQ 訊息佇列 - fanout 模式分發訊息

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

fanout 模式

將同一個 message 傳送到所有同該 Exchange 繫結的 queue, 只要 RoutingKey 是一樣, 這條訊息都會被投遞到所有與此 Exchange 繫結的 queue 中


p_fanout.php

<?php
//配置資訊
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin'
, 'password' => 'admin', 'vhost'=>'/' ); $exchangeName = 'test_fanout'; //交換機名 $routeKey = 'key_fanout'; //路由key //建立連線和channel $conn = new AMQPConnection($conn_args); $conn->connect() or die("Cannot connect to the broker!\n"); $channel = new AMQPChannel($conn); //建立交換機物件 $exchange = new AMQPExchange($channel
); $exchange->setName($exchangeName); $exchange->setType(AMQP_EX_TYPE_FANOUT); $exchange->setFlags(AMQP_DURABLE); $exchange->declareExchange(); //傳送訊息 for($i=0; $i<5; ++$i){ //訊息內容 $message = "TEST MESSAGE! ".$i; echo "Send Message:".$exchange->publish($message, $routeKey)."\n"
; } $conn->disconnect(); ?>

c_fanout_1.php

<?php
//配置資訊
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_fanout'; //交換機名
$queueName = 'test_fanout_1'; //佇列名
$routeKey = 'key_fanout'; //路由key

//建立連線和channel
$conn = new AMQPConnection($conn_args);
$conn->connect() or die("Cannot connect to the broker!\n");

$channel = new AMQPChannel($conn);

//建立交換機物件
$exchange = new AMQPExchange($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){
    $queue->consume('processMessage');
    //自動ACK應答
    //$queue->consume('processMessage', AMQP_AUTOACK);
}

$conn->disconnect();

/*
 * 消費回撥函式
 * 處理訊息
 */
function processMessage($envelope, $q) {
    $msg = $envelope->getBody();
    echo $msg."\n"; //處理訊息
    $q->ack($envelope->getDeliveryTag()); //手動傳送ACK應答
}
?>

c_fanout_2.php

<?php
//配置資訊
$conn_args = array(
    'host' => '127.0.0.1',
    'port' => '5672',
    'login' => 'admin',
    'password' => 'admin',
    'vhost'=>'/'
);
$exchangeName = 'test_fanout'; //交換機名
$queueName = 'test_fanout_2'; //佇列名
$routeKey = 'key_fanout'; //路由key

//建立連線和channel
$conn = new AMQPConnection($conn_args);
$conn->connect() or die("Cannot connect to the broker!\n");

$channel = new AMQPChannel($conn);

//建立交換機物件
$exchange = new AMQPExchange($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){
    $queue->consume('processMessage');
    //自動ACK應答
    //$queue->consume('processMessage', AMQP_AUTOACK);
}

$conn->disconnect();

/*
 * 消費回撥函式
 * 處理訊息
 */
function processMessage($envelope, $q) {
    $msg = $envelope->getBody();
    echo $msg."\n"; //處理訊息
    $q->ack($envelope->getDeliveryTag()); //手動傳送ACK應答
}
?>

分別執行 c_fanout_1.php c_fanout_2.php 等待消費訊息, 然後執行 p_fanout.php 生產訊息

# 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