=====active MQ=====

 ActiveMQ。Apache的项目。

==== 学习网址 ====
  * 学习网址：<code>http://activemq.apache.org/ </code>
  * 是Jave编写；依赖运行环境 JRE 。

==== 安装 ====
  * yum install activemq 
  * pip install stomp.py
  * PHP需要扩展库 Stomp 。
  * yum install -y jre
  * pecl install Stomp
  * centos： yum install activemq
  * OSX:  brew install apache-activemq

==== 配置 ====
  * 开启schduler,启用延时投递：conf/activemq.xml文件中的<broker> 中加入如下属性：
       <code xml>
       <broker ...... schedulerSupport="true">
       </code>
  * 配置访问用户名密码：conf/activemq.xml文件中的<broker> 中加入：
<code xml>
<!-- 添加访问ActiveMQ的账号密码 -->
<plugins>
        <simpleAuthenticationPlugin>
                <users>
                        <authenticationUser username="guoyi" password="guoyi" groups="users,admins"/>
                </users>
        </simpleAuthenticationPlugin>
</plugins>
</code>
  * 修改管理页面登录密码：
       conf/jetty-realm.properties 中配置账号密码


===== 启动 =====
  * foreground run： activemq console
  * background run： activemq start | stop

web管理页面：http://localhost:8161/admin


==== php 访问 ====
Install the [PHP Stomp client](http://www.php.net/manual/en/book.stomp.php) library.

pecl install stomp

maybe you should add "extension=stomp.so" to php.ini


==== 延时 ====
文档：
<code php>http://activemq.apache.org/delay-and-schedule-message-delivery.html
</code>
示例：
<code php>
		try {
			$url = 'tcp://'.$host.":".$port;
			$stomp = new Stomp($url, $user, $password);
			$header['AMQ_SCHEDULED_DELAY'] = 10000;
			$header['AMQ_SCHEDULED_PERIOD'] = 3000;
			$header['AMQ_SCHEDULED_REPEAT'] = 5;

			$stomp->send($evt->tar, $evt->msg, $header);

			QhLog::INF( 'triger event '.$evt->msg.' to '.$evt->tar);

		} catch(StompException $e) {
			QhLog::ERR( $e->getMessage());
		}
</code>
==== php代码发送消息示例 ====
<code php>

$user = "guoyi";
$password = "guoyi";
$host = "123.56.201.72";
$port = 61613;
$destination  = '/queue/qhfm';

$param['phone'] = '13422288866';
$param['code'] = '3761';

$msg['id'] = '123';
$msg['type'] = 'sms';
$msg['time'] = strval(time());
$msg['param'] = $param;

$body = json_encode($msg);
echo 'send: '.$body.PHP_EOL ;

try {
  $url = 'tcp://'.$host.":".$port;
  $stomp = new Stomp($url, $user, $password);
  
  $stomp->send($destination, $body);

} catch(StompException $e) {
  echo $e->getMessage();
}
</code>


==== php代码处理消息示例 ====
<code php>

class QhMsgRoutine
{
  private $stomp;
  private $count = 0;

  function __construct($timeout = 60)
  {
    $user = "guoyi";
    $password = "guoyi";
    $host = "123.56.201.72";
    $port = 61613;
    $destination  = '/queue/qhfm';

    try {
      $url = 'tcp://'.$host.":".$port;
      $stomp = new Stomp($url, $user, $password);
      $stomp->subscribe($destination);
      $stomp->setReadTimeout($timeout);
  // var_dump($stomp->getReadTimeout()); 

    } catch(StompException $e) {
      echo $e->getMessage();
    }
  }

  function getMsg()
  {
    try {
      echo "Waiting for messages...\n";
      while(true) {
        $frame = $stomp->readFrame();
        if( $frame ) {
          $stomp->ack($frame);
          if( $frame->command == "MESSAGE" ) {
            echo "Receive message: ".$frame->body.PHP_EOL;
            $msg = json_decode($frame->body);
            var_dump($msg);
            return $msg;
          } else {
            echo "Unexpected frame.\n";
            var_dump($frame);
          }
        }else{
          echo 'waiting for msg...';
        }
      }

    } catch(StompException $e) {
      echo $e->getMessage();
    }
    return null;
  }

  function processMsg($msg)
  {
    switch ($msg['type']) {
      case 'sms':
        # code...
      break;
      case 'im':
        # code...
      break;
      
      default:
        # code...
      break;
    }
  }
}


$processer = new QhMsgRoutine(60);

while(true){
  $processer->processMsg($processer->getMsg());
}
</code>



==== python代码收发消息示例 ====
<code php>
# -*-coding:utf-8-*-
import stomp
import time,json

tts_mq_server = [('test.jzyq.ltd',61613)]
queue_syn_name = '/queue/tts/syn_test'
queue_rst_name = '/queue/tts/rst_test'

listener_name = 'TtsListener'
 
class RstJobListener(object):
    def on_message(self, headers, message):
        print('headers: %s' % headers)
        print('message: %s' % message)
        msg = json.loads(message)
        print('audio is: ' + msg['audio'])
        data = msg['data']
        #update status
        if data['cb']:
            #call call back
            print('callback is: ' + data['cb'])
            pass

 
def get_msg(idx):
    txt = 'hello (%d)' % idx
    msg = {'id':'123456789','text':txt,'speaker':1,'data': {'cb':'https://www.baidu.com/'} }
    ret =  json.dumps(msg)
    return ret
 

print('api begin ')
conn = stomp.Connection10(tts_mq_server)
conn.set_listener(listener_name, RstJobListener())
conn.start()
conn.connect(username='system', passcode='manager', wait=True)
conn.subscribe(queue_rst_name)
# time.sleep(1) # secs

for i in range(10):
    msg = get_msg(i)
    print('i am a api call:'+ msg)
    conn.send(queue_syn_name,  msg)
    time.sleep(1) 

print('api waiting... ')

while True:
    time.sleep(100)

conn.disconnect()


</code>