如何在宝塔上使用RabbitMQ

前言：

有些人为了让项目快速上线，服务器往往安装宝塔面板，然后再极速安装LNMP。尽管环境搭建的时间省了，但是宝塔上PHP中扩展包没有提供AMQP。这时候只是为了使用消息队列而对PHP大动干戈， 不如使用一个PHP AMQP的库，即用即装，不对环境造成影响。 

简介：

php-amqplib 客户端库，通过composer安装，不需要在PHP中安装扩展，以下为两种不同的安装方式。

1. 项目中新建composer.json，添加如下代码，然后composer install

{
    "require": {
        "php-amqplib/php-amqplib": " 2.6.*"
    }
}

2. 命令进入到项目，然后 composer require php-amqplib/php-amqplib 2.6.*

RabbitMQ设置：

1. 进入web管控台，添加新用户，角色管理员，任何IP上都可以登录，授权指定虚拟机。

2. 添加交换机

3. 添加队列并与交互机绑定。

编码：

1. 封装rabbitMQ类。

config = $config;

        //设置rabbitmq配置值
        $this->host  = '192.168.1.101';
        $this->port  = 5672;
        $this->user  = 'beiqiaosu';
        $this->pass  = 'beiqiaosu';
        $this->vhost = 'report';

        $this->connect();
    }

    public function __call($method, $args = [])
    {
        $reConnect = false;
        while (1) {
            try {
                $this->initChannel();
                $result = call_user_func_array([$this->channel, $method], $args);
            } catch (\Exception $e) {
                //已重连过，仍然报错
                if ($reConnect) {
                    throw $e;
                }

                \Swoole::$php->log->error(__CLASS__ . ' [' . posix_getpid() . "] Swoole RabbitMQ[{$this->config['host']}:{$this->config['port']}] Exception(Msg=" . $e->getMessage() . ', Code=' . $e->getCode() . "), RabbitMQ->{$method}, Params=" . var_export($args, 1));
                if ($this->connection) {
                    $this->close();
                }

                $this->connect();

                $reConnect = true;
                continue;
            }

            return $result;
        }
        //不可能到这里
        return false;
    }

    /**
     * 连接rabbitmq消息队列.
     *
     * @return bool
     */
    public function connect()
    {
        try {
            if ($this->connection) {
                unset($this->connection);
            }
            $this->connection = new AMQPStreamConnection($this->host, $this->port, $this->user, $this->pass, $this->vhost);
        } catch (\Exception $e) {
            echo __CLASS__ ."Swoole RabbitMQ Exception'".$e->getMessage();
            return false;
        }
    }

    /**
     * 关闭连接.
     */
    public function close()
    {
        $this->channel->close();
        $this->connection->close();
    }

    /**
     * 设置交换机名称.
     *
     * @param string $exchangeName
     */
    public function setExchangeName($exchangeName = '')
    {
        $exchangeName && $this->exchangeName = $exchangeName;
    }

    /**
     * 设置队列名称.
     *
     * @param string $queueName
     */
    public function setQueueName($queueName = '')
    {
        $queueName && $this->queueName = $queueName;
    }

    /**
     * 设置频道.
     */
    public function initChannel()
    {
        if (!$this->channel) {
            //通道
            $this->channel = $this->connection->channel();
            $this->channel->queue_declare($this->queueName, false, true, false, false);
            $this->channel->exchange_declare($this->exchangeName, 'direct', false, true, false);
            $this->channel->queue_bind($this->queueName, $this->exchangeName);
        }
    }

    /**
     * 获取队列数据.
     *
     * @return mixed
     */
    public function pop()
    {
        while (1) {
            try {
                $this->connect();
                $this->initChannel();
                $message = $this->channel->basic_get($this->queueName);
                
                if ($message) {
                    $this->channel->basic_ack($message->delivery_info['delivery_tag']);
                    $result = $message->body;
                } else {
                    throw new \Exception('Empty Queue Data');
                }
            } catch (\Exception $e) {
                //\Swoole::$php->log->error(__CLASS__ . " [" . posix_getpid() . "] Swoole RabbitMQ[{$this->config['host']}:{$this->config['port']}] Exception(Msg=" . $e->getMessage() . ", Code=" . $e->getCode() . ")");
                sleep(1);
                continue;
            }

            return $result;
        }
        
        //不可能到这里
        return false;
    }

    /**
     * 插入队列数据.
     *
     * @param $data
     *
     * @return bool
     */
    public function push($data)
    {    
        while (1) {        
            try {
                $this->connect();
                $this->initChannel();
                $message = new AMQPMessage($data, ['content_type'=>'text/plain', 'devlivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT]);
                $this->channel->basic_publish($message, $this->exchangeName);
            } catch (\Exception $e) {
                echo "$e->getMessage()";
                continue;
            }

            return true;
        }
        
        //不可能到这里
        return false;
    }
}

2. 操作mq，出队，入队。

pop();
    
}catch(\Exception $e) {
    
    var_dump($e->getMessage());die;
}*/


// 消息生产测试
try {
    $res = $mq->push(json_encode(['name'=>'beiqiaosu','order_id'=>'2020070115261425155']));
    
}catch(\Exception $e) {
    
    var_dump($e->getMessage());die;
}


var_dump($res);die;

测试：

1. 先通过生产消息(入队)方法运行一下，然后进入队列中get message查看消息总数。

2. 测试调用消费，再查看总数。