前面讲到direct类型的Exchange路由规则是完全匹配binding key与routing key,但这种严格的匹配方式在很多情况下不能满足实际业务需求。
topic类型的Exchange在匹配规则上进行了扩展,它与direct类型的Exchage相似,也是将消息路由到binding key与routing key相匹配的Queue中,但这里的匹配规则有些不同,它约定:
1 routing key
routing key为一个句点号“. ”分隔的字符串(我们将被句点号“. ”分隔开的每一段独立的字符串称为一个单词),如“quick.clevercode.log”、“my.clevercode.fox”、“my.brown.fox”
2 binding key
binding key与routing key一样也是句点号“. ”分隔的字符串
binding key中可以存在两种特殊字符“”与“#”,用于做模糊匹配,其中“”用于匹配一个单词,“#”用于匹配多个单词(可以是零个) 。如:“*.clevercode.*”,“*.*.log”,“my.#”
require_once __DIR__ . '/../../vendor/autoload.php';
use PhpAmqpLib\Connection\AMQPConnection;
//连接
$host = '127.0.0.1';//ip
$port = '5672';//端口
$user = 'guest'; //用户
$password = 'guest'; //密码
$vhost = '/'; //空间
$connection = new AMQPConnection($host, $port,$user, $password,$vhost);
$channel = $connection->channel();
//交换机名字
$exchange_name = 'exchange_topic_clevercode';
//队列名字
$queue_name = 'queue_topic_clevercode1';
#$queue_name = 'queue_topic_clevercode2';
//binding路由key
$binding_routing_key = '*.clevercode.*';
#$binding_routing_key = '*.*.log';
#$binding_routing_key = 'my.#';
/*
name: 交换机名字
type: 交换机类型
passive: false
durable: true // 交换机将在服务器重启后生存。
auto_delete: false //通道关闭的时候,交换机不会被删除
*/
$channel->exchange_declare($exchange_name, 'topic', false, true, false);
/*
name: 队列名称
passive: false
durable: true // 队列是否持久化
exclusive: false // 当前连接不在时,队列是否自动删除
auto_delete: false // 没有consumer时,队列是否自动删除
*/
$channel->queue_declare($queue_name, false, true, false, false);
/**
* 绑定队列到一个交换机
*
* @param string $queue 队列名称
* @param string $exchange 交换机名称
* @param string $routing_key binding路由key
* @param bool $nowait
* @param null $arguments
* @param null $ticket
* @return mixed|null
*/
$channel->queue_bind($queue_name, $exchange_name, $binding_routing_key);
/**
* 消费回调函数
* 处理消息
*/
function processMessage($msg) {
//处理消息
echo ' [x] ', $msg->delivery_info['routing_key'], ':', $msg->body, "\n";
}
/**
* 开始一个队列的消费
*
* @param string $queue
* @param string $consumer_tag
* @param bool $no_local
* @param bool $no_ack
* @param bool $exclusive
* @param bool $nowait
* @param callback|null $callback
* @param int|null $ticket
* @param array $arguments
* @return mixed|string
*/
$channel->basic_consume($queue_name, '', false, true, false, false, 'processMessage');
/**
* //注册结束时候,关闭连接情况
* @param \PhpAmqpLib\Channel\AMQPChannel $ch
* @param \PhpAmqpLib\Connection\AbstractConnection $conn
*/
function AMQP_shutdown($ch, $conn)
{
$ch->close();
$conn->close();
}
register_shutdown_function('AMQP_shutdown', $channel, $connection);
while (count($channel->callbacks))
{
$channel->wait();
}
require_once __DIR__ . '/../../vendor/autoload.php';
use PhpAmqpLib\Connection\AMQPConnection;
use PhpAmqpLib\Message\AMQPMessage;
//连接
$host = '127.0.0.1';//ip
$port = '5672';//端口
$user = 'guest'; //用户
$password = 'guest'; //密码
$vhost = '/'; //空间
$connection = new AMQPConnection($host, $port,$user, $password,$vhost);
$channel = $connection->channel();
//交换机名字
$exchange_name = 'exchange_topic_clevercode';
//路由key
$routing_key = 'quick.clevercode.log';
$routing_key = 'my.clevercode.fox';
$routing_key = 'my.brown.fox';
$routing_key = 'my.pink.log';
$routing_key = 'quick.brown.fox';
$routing_key = 'clevercode';
$routing_key = 'my';
/*
$routing_key = 'quick.clevercode.male.log';
$routing_key = '';
*/
/*
name: 交换机名字
type: 交换机类型
passive: false
durable: true // 交换机将在服务器重启后生存。
auto_delete: false //通道关闭的时候,交换机不会被删除
*/
$channel->exchange_declare($exchange_name, 'topic', false, true, false);
for($i = 1; $i <= 30;$i++)
{
sleep(1);
/**
* Publishes a message
*
* @param AMQPMessage $msg
* @param string $exchange
* @param string $routing_key
* @param bool $mandatory
* @param bool $immediate
* @param null $ticket
*/
$data = "msg info:{$i}";
$msg = new AMQPMessage($data);
$channel->basic_publish($msg, $exchange_name, $routing_key);
echo "send :{$data}\n";
}
$channel->close();
$connection->close();
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