php rabbitmq的开发体验（二）

一、前言

在上一篇rabbitmq开发体验，我们大致介绍和安装上了rabbitmq和php扩展和界面操作rabbitmq的方法，下面正是正式的用我们php来操作消息队列的生产和消费。附上参考的网站：

• rabbitmq官网 https://www.rabbitmq.com/ 全英文看起来吃力 官方入门文档：https://www.rabbitmq.com/getstarted.html
• 官方入门文档 https://www.cnblogs.com/grimm/p/5728736.html 此博客主对官方php案例的解释
• RabbitMQ发布订阅实战-实现延时重试队列 代码项目：https://github.com/mylxsw/rabbitmq-pubsub-php
• rabbitmq高级特性 B站视频 https://www.bilibili.com/video/BV1S5411H7ef?from=search&seid=8055368004001009131
• RabbitMQ的ack或nack机制使用不当导致的队列堵塞或死循环问题 https://blog.csdn.net/lisheng19870305/article/details/112849495
• RabbitMQ 延时消息队列
• Rabbitmq之高级特性——百分百投递消息&消息确认模式&消息返回模式实现
• RabbitMQ：消费者优先级的介绍和使用　　https://blog.csdn.net/weixin_45492007/article/details/106189961
• RabbitMQ消息模式（消息100%的投递、幂等性概念） https://blog.csdn.net/weixin_42687829/article/details/104327711
• 简介Rabbitmq的几种消费模式 https://www.jianshu.com/p/7ac733b7481b

二、开发经历

对于rabbitmq的php类库，我开发是使用PHP amqplib，composer解决依赖管理。

添加composer.json:

{
    "require": {
        "php-amqplib/php-amqplib": ">=2.6.1"
    }
}
composer install
# 或者 直接运行包引入

composer require php-amqplib/php-amqplib

我的开发框架是yii1.1,核心代码如下，有错误请指正。

1.rabbitmq的连接底层类

<?php
include_once(ROOT_PATH . 'protected/extensions/rabbitmq/autoload.php');

use PhpAmqpLib\Connection\AMQPStreamConnection;

use PhpAmqpLib\Message\AMQPMessage;

/


rabbitmq工具类

*/

class RabbitMq

{

protected $connection;

protected $channel;

protected $exchange_name;

protected $query_name;

protected $route_key_name;
/


构造器

*/

public function __construct()

{

//读取文件会导致并发性高时连接失败故写在配置文件

$config = $GLOBALS['rabbitmq_config'];
if (!$config)

throw new \AMQPConnectionException('config error!');
$this->connection = new AMQPStreamConnection($config['host'], $config['port'], $config['username'], $config['password'], $config['vhost']);

if (!$this->connection) {

throw \AMQPConnectionException("Cannot connect to the broker!\n");

}

$this->channel = $this->connection->channel();

}


/

日志写入
@param $file log文件路径
@param $dataStr 报错字符串

*/

protected function writeLog($file,$dataStr)

{

file_put_contents(ROOT_PATH.$file, date('Y-m-d H:i:s').'    '.$dataStr .PHP_EOL, FILE_APPEND);

}

/

close link

*/

public function close()

{

$this->channel->close();

$this->connection->close();

}

/

RabbitMQ destructor

*/

public function __destruct()

{

$this->close();

}



}

   2.消息的封装类

 

<?php
include_once(ROOT_PATH . 'protected/extensions/rabbitmq/autoload.php');

use PhpAmqpLib\Connection\AMQPStreamConnection;

use PhpAmqpLib\Message\AMQPMessage;

use PhpAmqpLib\Wire\AMQPTable;

class SubMessage

{

public $message;

private $routingKey;

private $params;
</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * SubMessage constructor.
 *
 * @param AMQPMessage $message
 * @param string      $routingKey
 * @param array       $params
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> __construct(AMQPMessage <span style="color: #800080;">$message</span>, <span style="color: #800080;">$routingKey</span>, <span style="color: #800080;">$params</span> =<span style="color: #000000;"> [])
{
    </span><span style="color: #800080;">$this</span>-&gt;params = <span style="color: #800080;">$params</span>; <span style="color: #008000;">//</span><span style="color: #008000;">额外的参数这里主要存储重试的次数</span>
    <span style="color: #800080;">$this</span>-&gt;message = <span style="color: #800080;">$message</span><span style="color: #000000;">;

    </span><span style="color: #800080;">$this</span>-&gt;routingKey = <span style="color: #800080;">$routingKey</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Get AMQP Message
 *
 * @return AMQPMessage
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getAMQPMessage()
{
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">message;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Get original Message
 *
 * @return Message
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getMessage()
{
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-&gt;message-&gt;<span style="color: #000000;">body;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Get meta params
 *
 * @return array
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getParams()
{
    </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">is_array</span>(<span style="color: #800080;">$this</span>-&gt;params) ? <span style="color: #800080;">$this</span>-&gt;params :<span style="color: #000000;"> [];
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Get meta param
 *
 * @param string $key
 *
 * @return mixed|null
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> getParam(<span style="color: #0000ff;">string</span> <span style="color: #800080;">$key</span><span style="color: #000000;">)
{
    </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$this</span>-&gt;params[<span style="color: #800080;">$key</span>]) ? <span style="color: #800080;">$this</span>-&gt;params[<span style="color: #800080;">$key</span>] : <span style="color: #0000ff;">null</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Get routing key
 *
 * @return string
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getRoutingKey()
{
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">routingKey;
}

}

 

3.消息的核心类

<?php
use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
use PhpAmqpLib\Wire\AMQPTable;
/**
 * vm独立站推送
 * 简介Rabbitmq的几种消费模式  https://www.jianshu.com/p/7ac733b7481b
 */
class VmMq extends RabbitMq
{
    protected $exchange_name = 'master'; //主Exchange，发布消息时发布到该Exchange
    protected $exchange_retry_name = 'master.retry'; //重试Exchange，消息处理失败时(3次以内)，将消息重新投递给该Exchange
    protected $exchange_failed_name = 'master.failed'; //失败Exchange，超过三次重试失败后，消息投递到该Exchange
    protected $query_name = 'query_vm'; //消费服务需要declare三个队列[queue_name] 队列名称，格式符合 [服务名称]@订阅服务标识
    protected $query_retry_name = 'query_vm@retry';
    protected $query_failed_name = 'query_vm@fail';
    protected $route_key_name = 'route_key_vm'; //路由键名
    /**
     * 构造器
     */
    public function __construct()
    {
        parent::__construct();
    </span><span style="color: #008000;">//</span><span style="color: #008000;">第2个参数：rabbitmq将给一个消费者一次只发布十条消息。或者说，只有收到消费者上十个消息的完成应答，才给它发布新的消息。如果消费者很忙，消费过慢，队列可能会被填满，这时你需要增加消费者，或者使用其他策略。</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;basic_qos(<span style="color: #0000ff;">null</span>, 100, <span style="color: #0000ff;">false</span><span style="color: #000000;">);
    </span><span style="color: #008000;">/*</span><span style="color: #008000;">
     * 第1个参数：交换机名
     * 第2个参数：声明topic类型交换器
     * 第3个参数：passive消极的，如果该交换机已存在，则不会创建；如果不存在，创建新的交换机。
     * 第4个参数：durable持久的，指定交换机持久
     * 第5个参数：auto_delete，通道关闭后是否删除交换机,自删除的前提是以前有队列连接这个交换器，后来所有与这个交换器绑定的队列或者交换器都与此解绑,
     * Topic交换器非常强大，可以像其他类型的交换器一样工作：

　　      * 当一个队列的绑定键是"#"是，它将会接收所有的消息，而不再考虑所接收消息的路由键，就像是fanout发布与订阅交换器一样；

　　      * 当一个队列的绑定键没有用到”#“和”“时，它又像direct交换一样工作。

* routing-key是模糊匹配，可以只替换一个单词，#可以代替零个或多个单词。

* https://www.cnblogs.com/wuhenzhidu/p/10802749.html

*/

$this->channel->exchange_declare($this->exchange_name, 'topic', false, true, false);

$this->channel->exchange_declare($this->exchange_retry_name, 'topic', false, true, false);

$this->channel->exchange_declare($this->exchange_failed_name, 'topic', false, true, false);

}
</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 生产消息
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> product(<span style="color: #800080;">$data</span>,<span style="color: #800080;">$priority</span> = 10<span style="color: #000000;">){
    </span><span style="color: #800080;">$unique_messageId</span> = <span style="color: #800080;">$this</span>-&gt;create_guid(); <span style="color: #008000;">//</span><span style="color: #008000;">生成消息的唯一标识,用来幂等性</span>
    <span style="color: #0000ff;">if</span>(!<span style="color: #008080;">is_array</span>(<span style="color: #800080;">$data</span><span style="color: #000000;">)){
        </span><span style="color: #800080;">$data</span> = <span style="color: #0000ff;">array</span>('msg' =&gt; <span style="color: #800080;">$data</span><span style="color: #000000;">);
    }
    </span><span style="color: #800080;">$uid</span>=<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$data</span>['uid'])?<span style="color: #800080;">$data</span>['uid']:0<span style="color: #000000;">;
    </span><span style="color: #800080;">$langid</span> = <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$data</span>['langid'])?<span style="color: #800080;">$data</span>['langid']:1<span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span>['unique_messageId'] = <span style="color: #800080;">$unique_messageId</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> = json_encode(<span style="color: #800080;">$data</span>,<span style="color: #000000;">JSON_UNESCAPED_UNICODE);

    </span><span style="color: #008000;">//</span><span style="color: #008000;">存入到表中，保证生产的消息100%到mq队列</span>
    <span style="color: #800080;">$newModel</span> = DynamicAR::model('nt_vm_message_idempotent'<span style="color: #000000;">);
    </span><span style="color: #800080;">$newModel</span>-&gt;message_id = <span style="color: #800080;">$unique_messageId</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;uid = <span style="color: #800080;">$uid</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;message_content = <span style="color: #800080;">$data</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;product_status = 0<span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;consume_status = 0<span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;create_time = <span style="color: #800080;">$newModel</span>-&gt;update_time = <span style="color: #008080;">time</span><span style="color: #000000;">();
    </span><span style="color: #800080;">$newModel</span>-&gt;langid = <span style="color: #800080;">$langid</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;priority = <span style="color: #800080;">$priority</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$newModel</span>-&gt;isNewRecord = <span style="color: #0000ff;">true</span><span style="color: #000000;">;
    </span><span style="color: #0000ff;">if</span>(!<span style="color: #800080;">$newModel</span>-&gt;<span style="color: #000000;">save()){
        </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_failed.log','数据库保存失败' . json_encode(<span style="color: #800080;">$newModel</span>-&gt;getErrors()).<span style="color: #800080;">$data</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
    }
    </span><span style="color: #008000;">//</span><span style="color: #008000;">推送成功的ack回调</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">set_ack_handler(
        </span><span style="color: #0000ff;">function</span>(AMQPMessage <span style="color: #800080;">$msg</span><span style="color: #000000;">){
            </span><span style="color: #800080;">$msgBody</span> = json_decode(<span style="color: #800080;">$msg</span>-&gt;getBody(),<span style="color: #0000ff;">true</span><span style="color: #000000;">);
            </span><span style="color: #0000ff;">if</span>(!<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$msgBody</span>['unique_messageId']) || !<span style="color: #800080;">$msgBody</span>['unique_messageId'<span style="color: #000000;">]){
                </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_failed.log','获取消费ID为空！' . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
            }
            </span><span style="color: #800080;">$unique_messageId</span> = <span style="color: #800080;">$msgBody</span>['unique_messageId'<span style="color: #000000;">];
            </span><span style="color: #800080;">$criteria</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> CDbCriteria;
            </span><span style="color: #800080;">$criteria</span>-&gt;addCondition("message_id = '".<span style="color: #800080;">$unique_messageId</span>."'"<span style="color: #000000;">);
            </span><span style="color: #800080;">$messageIdempotent</span> = DynamicAR::model('nt_vm_message_idempotent')-&gt;find(<span style="color: #800080;">$criteria</span><span style="color: #000000;">);
            </span><span style="color: #0000ff;">if</span> (!<span style="color: #800080;">$messageIdempotent</span><span style="color: #000000;">) {
                </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_failed.log','该消息数据库里不存在' . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
            }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
                </span><span style="color: #800080;">$connection</span> = Yii::app()-&gt;<span style="color: #000000;">db;
                </span><span style="color: #800080;">$command</span> = <span style="color: #800080;">$connection</span>-&gt;createCommand("<span style="color: #000000;">
                    UPDATE nt_vm_message_idempotent SET product_status=1 WHERE message_id = '</span><span style="color: #800080;">$unique_messageId</span><span style="color: #000000;">'
                </span>"<span style="color: #000000;">);
                </span><span style="color: #800080;">$re</span> = <span style="color: #800080;">$command</span>-&gt;<span style="color: #000000;">execute();
                </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$re</span><span style="color: #000000;">) {
                    </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_log.log',<span style="color: #800080;">$messageIdempotent</span>-&gt;message_id . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                    </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
                }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
                    </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_failed.log','数据库保存失败' . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                    </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
                }
            }
        }
    );
    </span><span style="color: #008000;">//</span><span style="color: #008000;">推送失败的nack回调</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">set_nack_handler(
        </span><span style="color: #0000ff;">function</span>(AMQPMessage <span style="color: #800080;">$message</span><span style="color: #000000;">){
            </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_product_failed.log',"消息生产到mq nack ".<span style="color: #800080;">$message</span>-&gt;<span style="color: #000000;">body);
        }
    );
    </span><span style="color: #008000;">//</span><span style="color: #008000;">监听交换机或者路由键是否存在</span>
    <span style="color: #800080;">$returnListener</span> = <span style="color: #0000ff;">function</span><span style="color: #000000;"> (
        </span><span style="color: #800080;">$replyCode</span>,
        <span style="color: #800080;">$replyText</span>,
        <span style="color: #800080;">$exchange</span>,
        <span style="color: #800080;">$routingKey</span>,
        <span style="color: #800080;">$message</span><span style="color: #000000;">
    ) {
        </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm.log','replyCode ='.<span style="color: #800080;">$replyCode</span>.';replyText='.<span style="color: #800080;">$replyText</span>.';exchange='.<span style="color: #800080;">$exchange</span>.';routingKey='.<span style="color: #800080;">$routingKey</span>.';body='.<span style="color: #800080;">$message</span>-&gt;<span style="color: #000000;">body);
    };
    </span><span style="color: #008000;">//</span><span style="color: #008000;">开启发送消息的return机制</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;set_return_listener(<span style="color: #800080;">$returnListener</span><span style="color: #000000;">);
    </span><span style="color: #008000;">//</span><span style="color: #008000;">开启发送消息的ack回调</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">confirm_select();

    </span><span style="color: #800080;">$msg</span> = <span style="color: #0000ff;">new</span> AMQPMessage(<span style="color: #800080;">$data</span>,<span style="color: #0000ff;">array</span><span style="color: #000000;">(
        </span>'delivery_mode' =&gt; AMQPMessage::DELIVERY_MODE_PERSISTENT, <span style="color: #008000;">//</span><span style="color: #008000;">设置消息持久化</span>
        'priority' =&gt; <span style="color: #800080;">$priority</span>, <span style="color: #008000;">//</span><span style="color: #008000;">消息的优先级 优先级越大越优先</span>

        ));

$msg->set('application_headers', new AMQPTable([]));

//推送消息到某个交换机，第三个是路由键为方便即是队列名

$this->channel->basic_publish($msg, $this->exchange_name,$this->query_name,true);

//等待发送消息的ack回调消息

$this->channel->wait_for_pending_acks();

$this->close();

}
</span><span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span> create_guid(<span style="color: #800080;">$namespace</span> = ''<span style="color: #000000;">) {
    </span><span style="color: #0000ff;">static</span> <span style="color: #800080;">$guid</span> = ''<span style="color: #000000;">;
    </span><span style="color: #800080;">$uid</span> = <span style="color: #008080;">uniqid</span>("", <span style="color: #0000ff;">true</span><span style="color: #000000;">);
    </span><span style="color: #800080;">$data</span> = <span style="color: #800080;">$namespace</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> .= <span style="color: #800080;">$_SERVER</span>['REQUEST_TIME'<span style="color: #000000;">];
    </span><span style="color: #800080;">$data</span> .= <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_SERVER</span>['HTTP_USER_AGENT'])?<span style="color: #800080;">$_SERVER</span>['HTTP_USER_AGENT']:''<span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> .= <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_SERVER</span>['SERVER_ADDR'])?<span style="color: #800080;">$_SERVER</span>['SERVER_ADDR']:''<span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> .= <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_SERVER</span>['SERVER_PORT'])?<span style="color: #800080;">$_SERVER</span>['SERVER_PORT']:''<span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> .= <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_SERVER</span>['REMOTE_ADDR'])?<span style="color: #800080;">$_SERVER</span>['REMOTE_ADDR']:''<span style="color: #000000;">;
    </span><span style="color: #800080;">$data</span> .= <span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$_SERVER</span>['REMOTE_PORT'])?<span style="color: #800080;">$_SERVER</span>['REMOTE_PORT']:''<span style="color: #000000;">;
    </span><span style="color: #800080;">$hash</span> = <span style="color: #008080;">strtoupper</span>(hash('ripemd128', <span style="color: #800080;">$uid</span> . <span style="color: #800080;">$guid</span> . <span style="color: #008080;">md5</span>(<span style="color: #800080;">$data</span><span style="color: #000000;">)));
    </span><span style="color: #800080;">$guid</span> = '{' .
        <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>, 0, 8) .
        '-' .
        <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>, 8, 4) .
        '-' .
        <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>, 12, 4) .
        '-' .
        <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>, 16, 4) .
        '-' .
        <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>, 20, 12) .
        '}'<span style="color: #000000;">;
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$guid</span><span style="color: #000000;">;
}


</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 消费消息
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> consume(\Closure <span style="color: #800080;">$callback</span>,\Closure <span style="color: #800080;">$shouldExitCallback</span> = <span style="color: #0000ff;">null</span>,<span style="color: #800080;">$priority</span> = 5<span style="color: #000000;">){
    </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">declareRetryQueue();
    </span><span style="color: #800080;">$this</span>-&gt;declareConsumeQueue(<span style="color: #800080;">$priority</span><span style="color: #000000;">);
    </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">declareFailedQueue();
    </span><span style="color: #008000;">//</span><span style="color: #008000;">执行上面的步骤主要是为保证这些目标交换机和队列已经存在</span>

    <span style="color: #800080;">$queueName</span> = <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">query_name;
    </span><span style="color: #800080;">$exchangeRetryName</span> = <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">exchange_retry_name;
    </span><span style="color: #800080;">$exchangeFailedName</span> = <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">exchange_failed_name;
    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 发起延时重试的回调</span>
    <span style="color: #800080;">$publishRetry</span> = <span style="color: #0000ff;">function</span> (<span style="color: #800080;">$msg</span>) <span style="color: #0000ff;">use</span> (<span style="color: #800080;">$queueName</span>,<span style="color: #800080;">$exchangeRetryName</span><span style="color: #000000;">) {

        </span><span style="color: #008000;">/*</span><span style="color: #008000;">* @var AMQPTable $headers </span><span style="color: #008000;">*/</span>
        <span style="color: #0000ff;">if</span> (<span style="color: #800080;">$msg</span>-&gt;has('application_headers'<span style="color: #000000;">)) {
            </span><span style="color: #800080;">$headers</span> = <span style="color: #800080;">$msg</span>-&gt;get('application_headers'<span style="color: #000000;">);
        } </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> {
            </span><span style="color: #800080;">$headers</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> AMQPTable();
        }

        </span><span style="color: #800080;">$headers</span>-&gt;set('x-orig-routing-key', <span style="color: #800080;">$this</span>-&gt;getOrigRoutingKey(<span style="color: #800080;">$msg</span><span style="color: #000000;">));

        </span><span style="color: #800080;">$properties</span> = <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">get_properties();
        </span><span style="color: #800080;">$properties</span>['application_headers'] = <span style="color: #800080;">$headers</span><span style="color: #000000;">;
        </span><span style="color: #800080;">$newMsg</span> = <span style="color: #0000ff;">new</span> AMQPMessage(<span style="color: #800080;">$msg</span>-&gt;getBody(), <span style="color: #800080;">$properties</span><span style="color: #000000;">);

        </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">basic_publish(
            </span><span style="color: #800080;">$newMsg</span>,
            <span style="color: #800080;">$exchangeRetryName</span>,
            <span style="color: #800080;">$queueName</span><span style="color: #000000;">
        );
        </span><span style="color: #008000;">//</span><span style="color: #008000;"> 发送ack信息应答当前消息处理完成</span>
        <span style="color: #800080;">$msg</span>-&gt;delivery_info['channel']-&gt;basic_ack(<span style="color: #800080;">$msg</span>-&gt;delivery_info['delivery_tag'<span style="color: #000000;">]);
    };

    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 将消息发送到失败队列的回调</span>
    <span style="color: #800080;">$publishFailed</span> = <span style="color: #0000ff;">function</span> (<span style="color: #800080;">$msg</span>) <span style="color: #0000ff;">use</span> (<span style="color: #800080;">$queueName</span>,<span style="color: #800080;">$exchangeFailedName</span><span style="color: #000000;">) {
        </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">basic_publish(
            </span><span style="color: #800080;">$msg</span>,
            <span style="color: #800080;">$exchangeFailedName</span>,
            <span style="color: #800080;">$queueName</span><span style="color: #000000;">
        );
        </span><span style="color: #800080;">$msg</span>-&gt;delivery_info['channel']-&gt;basic_ack(<span style="color: #800080;">$msg</span>-&gt;delivery_info['delivery_tag'<span style="color: #000000;">]);
    };

    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">basic_consume(
        </span><span style="color: #800080;">$this</span>-&gt;query_name,
        '',     <span style="color: #008000;">//</span><span style="color: #008000;">customer_tag 消费者标签，用来区分多个消费者</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">no_local 若设置为true，表示不能将同一个Conenction中生产者发送的消息传递给这个Connection中的消费者</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">no_ack 是否自动确认消息,true自动确认,false不自动要消费脚本手动调用ack,避免消费异常系统反而自动ack完成</span>
        <span style="color: #0000ff;">false</span>,   <span style="color: #008000;">//</span><span style="color: #008000;">exclusive 排他消费者,即这个队列只能由一个消费者消费.适用于任务不允许进行并发处理的情况下.比如系统对接</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">nowait
        // 消费主回调函数</span>
        <span style="color: #0000ff;">function</span>(AMQPMessage <span style="color: #800080;">$msg</span>) <span style="color: #0000ff;">use</span> (<span style="color: #800080;">$callback</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">) {
            </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$this</span>-&gt;getRetryCount(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
            </span><span style="color: #0000ff;">try</span><span style="color: #000000;">{
                </span><span style="color: #008000;">/*</span><span style="color: #008000;">
                 * 需要注意的是：在消费消息之前，先获取消息ID，然后根据ID去数据库中查询是否存在主键为消息ID的记录，如果存在的话，
                 * 说明这条消息之前应该是已经被消费过了，那么就不处理这条消息；如果不存在消费记录的话，则消费者进行消费，消费完成发送确认消息，
                 * 并且将消息记录进行入库。
                 </span><span style="color: #008000;">*/</span>
                <span style="color: #800080;">$msgBody</span> = json_decode(<span style="color: #800080;">$msg</span>-&gt;getBody(),<span style="color: #0000ff;">true</span><span style="color: #000000;">);
                </span><span style="color: #0000ff;">if</span>(!<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$msgBody</span>['unique_messageId']) || !<span style="color: #800080;">$msgBody</span>['unique_messageId'<span style="color: #000000;">]){
                    </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_consume_failed.log','获取消费ID为空！' . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                    </span><span style="color: #008000;">//</span><span style="color: #008000;">发送ack信息应答当前消息处理完成</span>
                    <span style="color: #800080;">$msg</span>-&gt;delivery_info['channel']-&gt;basic_ack(<span style="color: #800080;">$msg</span>-&gt;delivery_info['delivery_tag'<span style="color: #000000;">]);
                    </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
                }
                </span><span style="color: #800080;">$unique_messageId</span> = <span style="color: #800080;">$msgBody</span>['unique_messageId'<span style="color: #000000;">];
                </span><span style="color: #800080;">$criteria</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> CDbCriteria;
                </span><span style="color: #800080;">$criteria</span>-&gt;addCondition("message_id = '".<span style="color: #800080;">$unique_messageId</span>."'"<span style="color: #000000;">);
                </span><span style="color: #800080;">$messageIdempotent</span> = DynamicAR::model('nt_vm_message_idempotent')-&gt;find(<span style="color: #800080;">$criteria</span><span style="color: #000000;">);
                </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$messageIdempotent</span><span style="color: #000000;">) {
                    </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$messageIdempotent</span>-&gt;consume_status == 0<span style="color: #000000;">){
                        </span><span style="color: #008000;">//</span><span style="color: #008000;">如果找不到，则进行消费此消息</span>
                        <span style="color: #800080;">$callback</span>(<span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">);
                    }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
                        </span><span style="color: #008000;">//</span><span style="color: #008000;">如果根据消息ID(作为主键)查询出有已经消费过的消息，那么则不进行消费；</span>
                        <span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_consume_failed.log','该消息已消费，无须重复消费！' . <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                        </span><span style="color: #008000;">//</span><span style="color: #008000;">发送ack信息应答当前消息处理完成</span>
                        <span style="color: #800080;">$msg</span>-&gt;delivery_info['channel']-&gt;basic_ack(<span style="color: #800080;">$msg</span>-&gt;delivery_info['delivery_tag'<span style="color: #000000;">]);
                        </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
                    }
                } </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> {
                    </span><span style="color: #008000;">//</span><span style="color: #008000;">插入太快</span>
                    <span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_consume_failed.log','插入太快'. <span style="color: #800080;">$msg</span>-&gt;<span style="color: #000000;">getBody());
                    </span><span style="color: #800080;">$this</span>-&gt;retryFail(<span style="color: #800080;">$retry</span>,<span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">);
                }
            }</span><span style="color: #0000ff;">catch</span> (<span style="color: #0000ff;">Exception</span> <span style="color: #800080;">$e</span><span style="color: #000000;">){
                </span><span style="color: #800080;">$this</span>-&gt;writeLog('runtime/vm_exception.log',<span style="color: #800080;">$e</span>-&gt;<span style="color: #000000;">getMessage());
                </span><span style="color: #800080;">$this</span>-&gt;retryFail(<span style="color: #800080;">$retry</span>,<span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">);
            }

        }
    );
    </span><span style="color: #008000;">//</span><span style="color: #008000;">监听通道消息 快递员看有没有信，有就立马寄</span>
    <span style="color: #0000ff;">while</span> (<span style="color: #008080;">count</span>(<span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">callbacks)) {

        </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$shouldExitCallback</span><span style="color: #000000;">()) {
            </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
        }

        </span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {
            </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">wait();
        } </span><span style="color: #0000ff;">catch</span> (AMQPTimeoutException <span style="color: #800080;">$e</span><span style="color: #000000;">) {
        } </span><span style="color: #0000ff;">catch</span> (AMQPIOWaitException <span style="color: #800080;">$e</span><span style="color: #000000;">) {
        }
    }


    </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">close();
}


</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 重试失败的消息
 * 注意： 该方法会堵塞执行
 * @param \Closure $callback 回调函数，可以为空，返回true则重新发布，false则丢弃
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retryFailed(<span style="color: #800080;">$callback</span> = <span style="color: #0000ff;">null</span><span style="color: #000000;">)
{
    </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">declareConsumeQueue();
    </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">declareFailedQueue();

    </span><span style="color: #800080;">$queueName</span> = <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">query_name;
    </span><span style="color: #800080;">$exchangeName</span> = <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">exchange_name;
    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">basic_consume(
        </span><span style="color: #800080;">$this</span>-&gt;query_failed_name,
        '',     <span style="color: #008000;">//</span><span style="color: #008000;">customer_tag</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">no_local</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">no_ack</span>
        <span style="color: #0000ff;">true</span>,   <span style="color: #008000;">//</span><span style="color: #008000;">exclusive</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">nowait</span>
        <span style="color: #0000ff;">function</span> (<span style="color: #800080;">$msg</span>) <span style="color: #0000ff;">use</span> (<span style="color: #800080;">$queueName</span>, <span style="color: #800080;">$exchangeName</span>, <span style="color: #800080;">$callback</span><span style="color: #000000;">) {
            </span><span style="color: #0000ff;">if</span> (<span style="color: #008080;">is_null</span>(<span style="color: #800080;">$callback</span>) || <span style="color: #800080;">$callback</span>(<span style="color: #800080;">$msg</span><span style="color: #000000;">)) {
                </span><span style="color: #008000;">//</span><span style="color: #008000;"> 重置header中的x-orig-routing-key属性</span>
                <span style="color: #800080;">$msg</span>-&gt;set('application_headers', <span style="color: #0000ff;">new</span><span style="color: #000000;"> AMQPTable([
                    </span>'x-orig-routing-key' =&gt; <span style="color: #800080;">$this</span>-&gt;getOrigRoutingKey(<span style="color: #800080;">$msg</span>),<span style="color: #000000;">
                ]));
                </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">basic_publish(
                    </span><span style="color: #800080;">$msg</span>,
                    <span style="color: #800080;">$exchangeName</span>,
                    <span style="color: #800080;">$queueName</span><span style="color: #000000;">
                );
            }

            </span><span style="color: #800080;">$msg</span>-&gt;delivery_info['channel']-&gt;basic_ack(<span style="color: #800080;">$msg</span>-&gt;delivery_info['delivery_tag'<span style="color: #000000;">]);
        }
    );
    </span><span style="color: #0000ff;">while</span> (<span style="color: #008080;">count</span>(<span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">callbacks)) {
        </span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {
            </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">wait();
        } </span><span style="color: #0000ff;">catch</span> (AMQPTimeoutException <span style="color: #800080;">$e</span><span style="color: #000000;">) {
            </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
        } </span><span style="color: #0000ff;">catch</span> (AMQPIOWaitException <span style="color: #800080;">$e</span><span style="color: #000000;">) {
        }
    }
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 获取绑定queue与exchange时的routingkey
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span> getOrigRoutingKey(<span style="color: #800080;">$msg</span><span style="color: #000000;">){
    </span><span style="color: #800080;">$retry</span> = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$msg</span>-&gt;has('application_headers'<span style="color: #000000;">)) {
        </span><span style="color: #800080;">$headers</span> = <span style="color: #800080;">$msg</span>-&gt;get('application_headers')-&gt;<span style="color: #000000;">getNativeData();
        </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$headers</span>['x-orig-routing-key'<span style="color: #000000;">])) {
            </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$headers</span>['x-orig-routing-key'<span style="color: #000000;">];
        }
    }
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$retry</span>?<span style="color: #800080;">$retry</span>:<span style="color: #800080;">$msg</span>-&gt;get('routing_key'<span style="color: #000000;">);
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 获取消息重试次数
 * @param AMQPMessage $msg
 * @return int
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span> getRetryCount(<span style="color: #800080;">$msg</span><span style="color: #000000;">)
{
    </span><span style="color: #800080;">$retry</span> = 0<span style="color: #000000;">;
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$msg</span>-&gt;has('application_headers'<span style="color: #000000;">)) {
        </span><span style="color: #800080;">$headers</span> = <span style="color: #800080;">$msg</span>-&gt;get('application_headers')-&gt;<span style="color: #000000;">getNativeData();
        </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$headers</span>['x-death'][0]['count'<span style="color: #000000;">])) {
            </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$headers</span>['x-death'][0]['count'<span style="color: #000000;">];
        }
    }

    </span><span style="color: #0000ff;">return</span> (int)<span style="color: #800080;">$retry</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 消息重试
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retryFail(<span style="color: #800080;">$retry</span>,AMQPMessage <span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">){
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$retry</span> &gt;= 3<span style="color: #000000;">) {
        </span><span style="color: #008000;">//</span><span style="color: #008000;"> 超过最大重试次数，消息无法处理</span>
        <span style="color: #800080;">$publishFailed</span>(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
    }

    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 消息处理失败，稍后重试</span>
    <span style="color: #800080;">$publishRetry</span>(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 声明重试队列
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> declareRetryQueue()
{
    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;queue_declare(<span style="color: #800080;">$this</span>-&gt;query_retry_name, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">true</span>, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">false</span>,<span style="color: #0000ff;">new</span> AMQPTable(<span style="color: #0000ff;">array</span><span style="color: #000000;">(
        </span>'x-dead-letter-exchange' =&gt; <span style="color: #800080;">$this</span>-&gt;exchange_name,
        'x-dead-letter-routing-key' =&gt; <span style="color: #800080;">$this</span>-&gt;query_name,
        'x-message-ttl'          =&gt; 3 * 1000,<span style="color: #000000;">
    )));
    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;queue_bind(<span style="color: #800080;">$this</span>-&gt;query_retry_name, <span style="color: #800080;">$this</span>-&gt;exchange_retry_name, <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">query_name);
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 声明消费队列
 * @param $priority 消息队列优先级 暂时取个中间值 1-10
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span> declareConsumeQueue(<span style="color: #800080;">$priority</span> = 5<span style="color: #000000;">)
{
    </span><span style="color: #008000;">//</span><span style="color: #008000;">声明队列</span>
    <span style="color: #800080;">$this</span>-&gt;channel-&gt;<span style="color: #000000;">queue_declare(
        </span><span style="color: #800080;">$this</span>-&gt;query_name,  <span style="color: #008000;">//</span><span style="color: #008000;">队列名称</span>
        <span style="color: #0000ff;">false</span>,     <span style="color: #008000;">//</span><span style="color: #008000;">passive消极的，如果该队列已存在，则不会创建；如果不存在，创建新的队列。</span>
        <span style="color: #0000ff;">true</span>,      <span style="color: #008000;">//</span><span style="color: #008000;">durable持久的，指定队列持久</span>
        <span style="color: #0000ff;">false</span>,   <span style="color: #008000;">//</span><span style="color: #008000;">exclusive独占的，是否能被其他队列访问true排他的。如果一个队列声明为排他队列，该队列仅对首次声明它的连接可见，并在连接断开时自动删除。
                            //排它是基于连接可见的，同一个连接不同信道是可以访问同一连接创建的排它队列，&ldquo;首次&rdquo;是指如果一个连接已经声明了一个排他队列，
                            //其他连接是不允许建立同名的排他队列，即使这个队列是持久化的，一旦连接关闭或者客户端退出，该排它队列会被自动删除，这种队列适用于一个客户端同时发送与接口消息的场景。</span>
        <span style="color: #0000ff;">false</span>,  <span style="color: #008000;">//</span><span style="color: #008000;">设置是否自动删除。当所有消费者都与这个队列断开连接时，这个队列会自动删除。注意： 不是说该队列没有消费者连接时该队列就会自动删除，因为当生产者声明了该队列且没有消费者连接消费时，该队列是不会自动删除的。</span>
        <span style="color: #0000ff;">false</span>,       <span style="color: #008000;">//</span><span style="color: #008000;">nowait</span>
        <span style="color: #0000ff;">new</span> AMQPTable(<span style="color: #0000ff;">array</span><span style="color: #000000;">(
            </span>'x-max-priority'         =&gt; <span style="color: #800080;">$priority</span>, <span style="color: #008000;">//</span><span style="color: #008000;">消息队列的优先级</span>

            ))

);

//绑定交换机和队列 参数：队列名，交换机名，路由键名

$this->channel->queue_bind($this->query_name, $this->exchange_name, $this->route_key_name);

$this->channel->queue_bind($this->query_name, $this->exchange_name, $this->query_name);

}
</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 声明消费失败队列
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> declareFailedQueue()
{
    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;queue_declare(<span style="color: #800080;">$this</span>-&gt;query_failed_name, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">true</span>, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">false</span>, <span style="color: #0000ff;">false</span><span style="color: #000000;">);
    </span><span style="color: #800080;">$this</span>-&gt;channel-&gt;queue_bind(<span style="color: #800080;">$this</span>-&gt;query_failed_name, <span style="color: #800080;">$this</span>-&gt;exchange_failed_name, <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">query_name);
}

}

我们将会实现如下功能

• 结合RabbitMQ的Topic模式和Work Queue模式实现生产方产生消息，消费方按需订阅，消息投递到消费方的队列之后，多个worker同时对消息进行消费
• 结合RabbitMQ的 Message TTL 和 Dead Letter Exchange 实现消息的延时重试功能
• 消息达到最大重试次数之后，将其投递到失败队列，等待人工介入处理bug后，重新将其加入队列消费

具体流程见下图

1. 生产者发布消息到主Exchange
2. 主Exchange根据Routing Key将消息分发到对应的消息队列
3. 多个消费者的worker进程同时对队列中的消息进行消费，因此它们之间采用“竞争”的方式来争取消息的消费
4. 消息消费后，不管成功失败，都要返回ACK消费确认消息给队列，避免消息消费确认机制导致重复投递，同时，如果消息处理成功，则结束流程，否则进入重试阶段
5. 如果重试次数小于设定的最大重试次数（3次），则将消息重新投递到Retry Exchange的重试队列
6. 重试队列不需要消费者直接订阅，它会等待消息的有效时间过期之后，重新将消息投递给Dead Letter Exchange，我们在这里将其设置为主Exchange，实现延时后重新投递消息，这样消费者就可以重新消费消息
7. 如果三次以上都是消费失败，则认为消息无法被处理，直接将消息投递给Failed Exchange的Failed Queue，这时候应用可以触发报警机制，以通知相关责任人处理
8. 等待人工介入处理（解决bug）之后，重新将消息投递到主Exchange，这样就可以重新消费了

外部确认消息表结构

CREATE TABLE `nt_vm_message_idempotent` (
　　`message_id` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '消息ID',
　　`message_content` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '消息内容',
　　`product_status` tinyint(1) UNSIGNED NOT NULL DEFAULT 0 COMMENT '是否生产成功到mq',
　　`consume_status` tinyint(1) NOT NULL COMMENT '是否消费成功',
　　`create_time` int(10) UNSIGNED NOT NULL DEFAULT 0,
　　`update_time` int(10) UNSIGNED NOT NULL DEFAULT 0,
　　`priority` tinyint(1) UNSIGNED NOT NULL DEFAULT 0 COMMENT '优先级属性',
　　PRIMARY KEY (`message_id`) USING BTREE,
　　UNIQUE INDEX `unique_message_id`(`message_id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

4.消息的消费脚本

<?php
include_once(ROOT_PATH . 'protected/extensions/rabbitmq/autoload.php');

use PhpAmqpLib\Connection\AMQPStreamConnection;

use PhpAmqpLib\Message\AMQPMessage;
/

Created by PhpStorm.
User: tangkeji
Date: 21-4-26
Time: 下午3:31

*/

class VmMqCommand extends CConsoleCommand {
</span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span> _Output(<span style="color: #800080;">$data</span>, <span style="color: #800080;">$isEnd</span> = 0<span style="color: #000000;">) {
    </span><span style="color: #0000ff;">if</span> (<span style="color: #008080;">is_array</span>(<span style="color: #800080;">$data</span>) || <span style="color: #008080;">is_object</span>(<span style="color: #800080;">$data</span><span style="color: #000000;">)) {
        </span><span style="color: #008080;">var_dump</span>(<span style="color: #800080;">$data</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">echo</span> "\n"<span style="color: #000000;">;
    } </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> {
        </span><span style="color: #0000ff;">echo</span> <span style="color: #800080;">$data</span> . "\n"<span style="color: #000000;">;
    }

    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$isEnd</span><span style="color: #000000;">) {
        Yii</span>::app()-&gt;<span style="color: #008080;">end</span><span style="color: #000000;">();
    }
}


</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 消息进程
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> actionRun(){
    </span><span style="color: #0000ff;">if</span>(LibCommon::isRunCommand('vmmq run')===<span style="color: #0000ff;">true</span>)<span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">;
    </span><span style="color: #800080;">$stopped</span> = <span style="color: #0000ff;">false</span><span style="color: #000000;">;
    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 自动退出计数器，当值小于1的时候退出
    // 发生异常-20，正常执行每次-2 (是否开启判断关闭)</span>

    <span style="color: #800080;">$autoExitCounter</span> = 200<span style="color: #000000;">;

    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 信号处理，接收到SIGUSR2信号的时候自动退出
    // 注意：环境必须是php7.1+才支持

//        if (function_exists('pcntl_async_signals')) {

//            pcntl_async_signals(true);

//        }

//

//        if (function_exists('pcntl_signal')) {

//            pcntl_signal(SIGUSR2, function ($sig) use (&$stopped) {

//                $stopped = true;

//            });

//        }
    <span style="color: #800080;">$mq</span> = <span style="color: #0000ff;">new</span><span style="color: #000000;"> VmMq();
    </span><span style="color: #800080;">$callback</span> = <span style="color: #0000ff;">function</span> (AMQPMessage <span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span>) <span style="color: #0000ff;">use</span><span style="color: #000000;">
    (
        </span>&amp;<span style="color: #800080;">$autoExitCounter</span><span style="color: #000000;">
    ) {
        </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$this</span>-&gt;getRetryCount(<span style="color: #800080;">$msg</span><span style="color: #000000;">);

        </span><span style="color: #0000ff;">try</span><span style="color: #000000;"> {
            </span><span style="color: #800080;">$routingKey</span> = <span style="color: #800080;">$this</span>-&gt;getOrigRoutingKey(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
            </span><span style="color: #800080;">$subMessage</span> = <span style="color: #0000ff;">new</span> SubMessage(<span style="color: #800080;">$msg</span>, <span style="color: #800080;">$routingKey</span> ,<span style="color: #000000;"> [
                </span>'retry_count' =&gt; <span style="color: #800080;">$retry</span>, <span style="color: #008000;">//</span><span style="color: #008000;"> 重试次数</span>

                ]);
            </span><span style="color: #800080;">$this</span>-&gt;subscribe(<span style="color: #800080;">$subMessage</span>,<span style="color: #800080;">$retry</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">);

            </span><span style="color: #008000;">//</span><span style="color: #008000;">$autoExitCounter = $autoExitCounter - 2;</span>


            } catch (\Exception $ex) {
                //$autoExitCounter = $autoExitCounter - 20; // 发生普通异常，退出计数器-20(关闭)
                $this->writeLog('runtime/vm_consume_failed.log', '消费失败！' . $ex->getMessage() . $msg->getBody());
                $this->retryFail($retry,$msg,$publishRetry,$publishFailed);
            }
        };
        $mq->consume(
            $callback,
            function () use (&$stopped, &$autoExitCounter) {
                return $stopped || $autoExitCounter < 1;
            }
        );
    }
</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 消息重试
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retryFail(<span style="color: #800080;">$retry</span>,AMQPMessage <span style="color: #800080;">$msg</span>, <span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">){
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$retry</span> &gt;= 3<span style="color: #000000;">) {
        </span><span style="color: #008000;">//</span><span style="color: #008000;"> 超过最大重试次数，消息无法处理</span>
        <span style="color: #800080;">$publishFailed</span>(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
    }

    </span><span style="color: #008000;">//</span><span style="color: #008000;"> 消息处理失败，稍后重试</span>
    <span style="color: #800080;">$publishRetry</span>(<span style="color: #800080;">$msg</span><span style="color: #000000;">);
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 获取消息重试次数
 * @param AMQPMessage $msg
 * @return int
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span> getRetryCount(<span style="color: #800080;">$msg</span><span style="color: #000000;">)
{
    </span><span style="color: #800080;">$retry</span> = 0<span style="color: #000000;">;
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$msg</span>-&gt;has('application_headers'<span style="color: #000000;">)) {
        </span><span style="color: #800080;">$headers</span> = <span style="color: #800080;">$msg</span>-&gt;get('application_headers')-&gt;<span style="color: #000000;">getNativeData();
        </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$headers</span>['x-death'][0]['count'<span style="color: #000000;">])) {
            </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$headers</span>['x-death'][0]['count'<span style="color: #000000;">];
        }
    }

    </span><span style="color: #0000ff;">return</span> (int)<span style="color: #800080;">$retry</span><span style="color: #000000;">;
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 订阅消息处理
 * @param \Aicode\RabbitMQ\SubMessage $msg
 * @param $retry
 * @param $publishRetry
 * @param $publishFailed
 * @return bool 处理成功返回true(返回true后将会对消息进行处理确认)，失败throw 异常
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> subscribe(<span style="color: #800080;">$msg</span>,<span style="color: #800080;">$retry</span>,<span style="color: #800080;">$publishRetry</span>, <span style="color: #800080;">$publishFailed</span><span style="color: #000000;">)
{
    </span><span style="color: #008000;">//</span><span style="color: #008000;"> TODO 业务逻辑实现

//        throw new Exception("消费异常！！！");

echo sprintf(

"subscriber:<%s> %s %s\n",

$msg->getRoutingKey(),

$retry,

$msg->getMessage()

);

echo "----------------------------------------\n";

//存入到表中，标识该消息已消费

$msgBody = json_decode($msg->getMessage(),true);

if(!isset($msgBody['unique_messageId']) || !$msgBody['unique_messageId']){

$this->writeLog('runtime/vm_consume_failed.log','获取消费ID为空！' . $msg->getMessage());

//发送ack信息应答当前消息处理完成

$msg->message->delivery_info['channel']->basic_ack($msg->message->delivery_info['delivery_tag']);

return;

}

$unique_messageId = $msgBody['unique_messageId'];

$criteria = new CDbCriteria;

$criteria->addCondition("message_id = '".$unique_messageId."'");

$messageIdempotent = DynamicAR::model('nt_vm_message_idempotent')->find($criteria);

//如果找到，则更新数据库消费状态

if ($messageIdempotent && $messageIdempotent->consume_status == 0) {

try {

LibCommon::doMqPull($msgBody);
            </span><span style="color: #800080;">$update_time</span> = <span style="color: #008080;">time</span><span style="color: #000000;">();
            </span><span style="color: #800080;">$connection</span> = Yii::app()-&gt;<span style="color: #000000;">db;
            </span><span style="color: #800080;">$command</span> = <span style="color: #800080;">$connection</span>-&gt;createCommand("<span style="color: #000000;">
                        UPDATE nt_vm_message_idempotent SET consume_status=1,update_time='</span><span style="color: #800080;">$update_time</span>' WHERE message_id = '<span style="color: #800080;">$unique_messageId</span><span style="color: #000000;">'
                    </span>"<span style="color: #000000;">);
            </span><span style="color: #800080;">$re</span> = <span style="color: #800080;">$command</span>-&gt;<span style="color: #000000;">execute();
            </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$re</span><span style="color: #000000;">) {

//                    $this->writeLog('runtime/vm_consume_log.log', $messageIdempotent->message_id . $msg->getMessage());

//发送ack信息应答当前消息处理完成

$msg->message->delivery_info['channel']->basic_ack($msg->message->delivery_info['delivery_tag']);

return;

} else {

$this->writeLog('runtime/vm_consume_failed.log', '数据库保存失败' . $msg->getMessage());

$this->retryFail($retry,$msg->message, $publishRetry, $publishFailed);

}

}catch (Exception $e) {

echo $e->getMessage();

$this->writeLog('runtime/vm_consume_failed.log', '消费失败！' . $e->getMessage() . $msg->getMessage());

$this->retryFail($retry,$msg->message, $publishRetry, $publishFailed);

}

} else {

//如果根据消息ID(作为主键)查询出有已经消费过的消息，那么则不进行消费；

$this->writeLog('runtime/vm_consume_failed.log','该消息已消费，无须重复消费！' . $msg->getMessage());

//发送ack信息应答当前消息处理完成

$msg->message->delivery_info['channel']->basic_ack($msg->message->delivery_info['delivery_tag']);

}

return true;
}

</span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span> getOrigRoutingKey(AMQPMessage <span style="color: #800080;">$msg</span><span style="color: #000000;">)
{

    </span><span style="color: #800080;">$retry</span> = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
    </span><span style="color: #0000ff;">if</span> (<span style="color: #800080;">$msg</span>-&gt;has('application_headers'<span style="color: #000000;">)) {
        </span><span style="color: #800080;">$headers</span> = <span style="color: #800080;">$msg</span>-&gt;get('application_headers')-&gt;<span style="color: #000000;">getNativeData();
        </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">isset</span>(<span style="color: #800080;">$headers</span>['x-orig-routing-key'<span style="color: #000000;">])) {
            </span><span style="color: #800080;">$retry</span> = <span style="color: #800080;">$headers</span>['x-orig-routing-key'<span style="color: #000000;">];
        }
    }
    </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$retry</span>?<span style="color: #800080;">$retry</span>:<span style="color: #800080;">$msg</span>-&gt;get('routing_key'<span style="color: #000000;">);
}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * 日志写入
 * @param $file log文件路径
 * @param $dataStr 报错字符串
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span> writeLog(<span style="color: #800080;">$file</span>,<span style="color: #800080;">$dataStr</span><span style="color: #000000;">)
{
    </span><span style="color: #008080;">file_put_contents</span>(ROOT_PATH.<span style="color: #800080;">$file</span>, <span style="color: #008080;">date</span>('Y-m-d H:i:s').'    '.<span style="color: #800080;">$dataStr</span> .<span style="color: #ff00ff;">PHP_EOL</span>,<span style="color: #000000;"> FILE_APPEND);
}

}

三、总结

以上是我的rabbitmq从0到有的经历，可能里面有不完美或者错误请大家指出，必会好好纠正，主要我这个消息要保证消息的可靠性，不容许丢失。里面用到rabbitmq的高级特性如ack确认机制，幂等性，限流机制，重回机制，ttl，死信队列（相当于失败消息的回收站）。

RabbitMQ消息模式（消息100%的投递、幂等性概念） https://blog.csdn.net/weixin_42687829/article/details/104327711

RabbitMQ服务版本升/降级

https://blog.csdn.net/weixin_42687829/article/details/125800276