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+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * Abstract class for queue managers
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category QueueManager
+ * @package Laconica
+ * @author Evan Prodromou <evan@controlyourself.ca>
+ * @author Sarven Capadisli <csarven@controlyourself.ca>
+ * @copyright 2009 Control Yourself, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://laconi.ca/
+ */
+
+class QueueManager
+{
+ static $qm = null;
+
+ static function get()
+ {
+ if (empty(self::$qm)) {
+
+ if (Event::handle('StartNewQueueManager', array(&self::$qm))) {
+
+ $enabled = common_config('queue', 'enabled');
+ $type = common_config('queue', 'subsystem');
+
+ if (!$enabled) {
+ // does everything immediately
+ self::$qm = new UnQueueManager();
+ } else {
+ switch ($type) {
+ case 'db':
+ self::$qm = new DBQueueManager();
+ break;
+ case 'stomp':
+ self::$qm = new StompQueueManager();
+ break;
+ default:
+ throw new ServerException("No queue manager class for type '$type'");
+ }
+ }
+ }
+ }
+
+ return self::$qm;
+ }
+
+ function enqueue($object, $queue)
+ {
+ throw ServerException("Unimplemented function 'enqueue' called");
+ }
+
+ function service($queue, $handler)
+ {
+ throw ServerException("Unimplemented function 'service' called");
+ }
+}