RabbitMQ队列,php实现
相关资料
rabbitmq官网 http://www.rabbitmq.com/
php amqb扩展安装 http://blog.csdn.net/chhxo/article/details/6695055
环境安装
rabbitmq-server服务器端 4.x
#导入erlang源，并安装erlang rpm --import http://binaries.erlang-solutions.com/debian/erlang_solutions.asc wget http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpm yum update yum update --skip-broken yum install erlang wget -c http://www.rabbitmq.com/releases/rabbitmq-server/v3.3.0/rabbitmq-server-3.3.0-1.noarch.rpm yum install rabbitmq-server-3.3.0-1.noarch.rpm
启动命令
/etc/init.d/rabbitmq-server start
查看状态 端口号5672
常用命令
rabbitmqctl status 查看状态
启用插件
rabbitmq-plugins enable rabbitmq_management
重新启动
php-5.5 扩展amqb 1.2
php.ini
php amqb扩展
一 概念
RabbitMQ是一个消息代理。它的核心原理非常简单：接收和发送消息。你可以把它想像成一个邮局：你把信件放入邮箱，邮递员就会把信件投递到你的收件人处。在这个比喻中，RabbitMQ是一个邮箱、邮局、邮递员。RabbitMQ和邮局的主要区别是，它处理的不是纸，而是接收、存储和发送二进制的数据——消息。
RabbitMQ使用的是AMQP协议。要使用她你就必须需要一个使用同样协议的库。几乎所有的编程语言都有可选择的库
二 简单实现
发送 send
<?php
/**
* PHP amqp(RabbitMQ) Send
*/
$exchangeName = 'demo';
$queueName = 'hello';
$routeKey = 'hello';
$message = 'Hello World!';
$connection = new AMQPConnection(array('host' => '127.0.0.1', 'port' => '5672', 'vhost' => '/', 'login' => 'guest', 'password' => 'guest'));
$connection->connect() or die("Cannot connect to the broker!\n");
try {
$channel = new AMQPChannel($connection);
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$queue = new AMQPQueue($channel);
$queue->setName($queueName);
$exchange->publish($message, $routeKey);
var_dump("Amqp Sent 'Hello World!'");
} catch (AMQPConnectionException $e) {
var_dump($e);
exit();
}
$connection->disconnect();
执行
php amqpSend.php 输出 Amqp Sent 'Hello World!'
接收
<?php
/**
* PHP amqp(RabbitMQ) Receive
*/
$exchangeName = 'demo';
$queueName = 'hello';
$routeKey = 'hello';
$connection = new AMQPConnection(array('host' => '127.0.0.1', 'port' => '5672', 'vhost' => '/', 'login' => 'guest', 'password' => 'guest'));
$connection->connect() or die("Cannot connect to the broker!\n");
$channel = new AMQPChannel($connection);
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_DIRECT);
$exchange->declare();
$queue = new AMQPQueue($channel);
$queue->setName($queueName);
$queue->declare();
$queue->bind($exchangeName, $routeKey);
var_dump(' Waiting for messages. To exit press CTRL+C');
while (TRUE) {
$queue->consume('callback');
}
$connection->disconnect();
function callback($envelope, $queue) {
$msg = $envelope->getBody();
var_dump(" [x] Received:" . $msg);
$queue->nack($envelope->getDeliveryTag());
}
php amqpReceive.php string(46) "[*] Waiting for messages. To exit press CTRL+C" string(26) " [x] Received:Hello World!"
二 并发实现测试
比如系统的中的日志往往很多，有的写入比较耗时，有的错误日志比较重要，需要发邮件，这个比较耗时等。这时候尝试用amqp来处理，最佳实践中不一定是 amqp, 可能redis队列比较适合
写个简单的例子，修改接收的程序比较耗时，加入数据库操作，看能否在高并发时把所有的数据加入库
修改 receive程序
<?php
/**
* PHP amqp(RabbitMQ) Receive
*/
$dbhand = null;
conn();
$exchangeName = 'demo';
$queueName = 'hello';
$routeKey = 'hello';
$connection = new AMQPConnection(array('host' => '127.0.0.1', 'port' => '5672', 'vhost' => '/', 'login' => 'guest', 'password' => 'guest'));
$connection->connect() or die("Cannot connect to the broker!\n");
$channel = new AMQPChannel($connection);
$exchange = new AMQPExchange($channel);
$exchange->setName($exchangeName);
$exchange->setType(AMQP_EX_TYPE_DIRECT);
$exchange->declare();
$queue = new AMQPQueue($channel);
$queue->setName($queueName);
$queue->declare();
$queue->bind($exchangeName, $routeKey);
var_dump('[*] Waiting for messages. To exit press CTRL+C');
while (TRUE) {
$queue->consume('callback');
}
$connection->disconnect();
function callback($envelope, $queue) {
$msg = $envelope->getBody();
var_dump(" [x] Received:" . $msg);
insert($msg);
$queue->nack($envelope->getDeliveryTag());
}
function conn(){
global $dbhand;
$dsn = "mysql:host=127.0.0.1;dbname=test";
try{
$dbhand = new PDO($dsn, "root", '');
}catch(PDOexception $e){
var_dump($e->getMessage()); exit;
}
}
function insert($msg){
global $dbhand;
usleep(100000); // 0.1秒
$addtimestr = date('Y-m-d H:i:s', time());
$sql = "INSERT INTO `test`.`amqp`(`msg`, `addtimestr`) VALUES('$msg', '$addtimestr') ";
if( $dbhand->exec($sql) ){
var_dump('Log Id Is '.$dbhand->lastinsertid());
}else{
var_dump('Insert Error');
}
return true;
}
开启服务端接收任务， php amqpReceive.php
我们使用 http_load 来测试并发下
./http_load -p 100 -seconds 300 urls.txt 100个进程， 30秒中
查看相关状态
队列结束，访问正常
接收还在处理
查看服务器还有多少队未处理 rabbitmqctl list_queues
查看数据库数据，mysql,表类型myisam 还在添加中
这应该是典型的 使用队列的场景了
总结，以上只是简单的处理，实际上在生产环境中，还有许多要处理的。
有了这个可以处理抢购程序，有时间可以再试下redis的队列。
不过 RabbitMQ 还有不少没研究的，继续努力……