3 * Laconica, the distributed open-source microblogging tool
5 * Abstract class for queue managers
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 * @category QueueManager
24 * @author Evan Prodromou <evan@controlyourself.ca>
25 * @author Sarven Capadisli <csarven@controlyourself.ca>
26 * @copyright 2009 Control Yourself, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
28 * @link http://laconi.ca/
31 require_once 'Stomp.php';
33 class StompQueueManager
41 function __construct()
43 $this->server = common_config('queue', 'stomp_server');
44 $this->username = common_config('queue', 'stomp_username');
45 $this->password = common_config('queue', 'stomp_password');
46 $this->base = common_config('queue', 'queue_basename');
51 if (empty($this->con)) {
52 $this->_log(LOG_INFO, "Connecting to '$this->server' as '$this->username'...");
53 $this->con = new Stomp($this->server);
55 if ($this->con->connect($this->username, $this->password)) {
56 $this->_log(LOG_INFO, "Connected.");
58 $this->_log(LOG_ERR, 'Failed to connect to queue server');
59 throw new ServerException('Failed to connect to queue server');
64 function enqueue($object, $queue)
70 // XXX: serialize and send entire notice
72 $result = $this->con->send($this->_queueName($queue),
73 $notice->id, // BODY of the message
74 array ('created' => $notice->created));
77 common_log(LOG_ERR, 'Error sending to '.$queue.' queue');
81 common_log(LOG_DEBUG, 'complete remote queueing notice ID = '
82 . $notice->id . ' for ' . $queue);
85 function service($queue, $handler)
91 $this->con->setReadTimeout($handler->timeout());
93 $this->con->subscribe($this->_queueName($queue));
97 $frame = $this->con->readFrame();
100 $notice = Notice::staticGet('id', $frame->body);
102 if (empty($notice)) {
103 $this->_log(LOG_WARNING, 'Got ID '. $frame->body .' for non-existent notice');
104 $this->con->ack($frame);
105 } else if ($handler->handle_notice($notice)) {
106 $this->_log(LOG_INFO, 'Successfully handled notice '. $notice->id .' posted at ' . $frame->headers['created']);
107 $this->con->ack($frame);
117 $this->con->unsubscribe($this->_queueName($queue));
120 function _queueName($queue)
122 return common_config('queue', 'queue_basename') . $queue;
125 function _log($level, $msg)
127 common_log($level, 'StompQueueManager: '.$msg);