includes/rcfeed/RedisPubSubFeedEngine.php

   1 <?php
   2
   3 /**
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  *
  19  * @file
  20  */
  21
  22 /**
  23  * Emit a recent change notification via Redis Pub/Sub
  24  *
  25  * If the feed URI contains a path component, it will be used to generate a
  26  * channel name by stripping the leading slash and replacing any remaining
  27  * slashes with '.'. If no path component is present, the channel is set to
  28  * 'rc'. If the URI contains a query string, its parameters will be parsed
  29  * as RedisConnectionPool options.
  30  *
  31  * @example
  32  * $wgRCFeeds['redis'] = array(
  33  *      'formatter' => 'JSONRCFeedFormatter',
  34  *      'uri'       => "redis://127.0.0.1:6379/rc.$wgDBname",
  35  * );
  36  *
  37  * @since 1.22
  38  */
  39 class RedisPubSubFeedEngine implements RCFeedEngine {
  40
  41         /**
  42          * @see RCFeedEngine::send
  43          */
  44         public function send( array $feed, $line ) {
  45                 $parsed = wfParseUrl( $feed['uri'] );
  46                 $server = $parsed['host'];
  47                 $options = array( 'serializer' => 'none' );
  48                 $channel = 'rc';
  49
  50                 if ( isset( $parsed['port'] ) ) {
  51                         $server .= ":{$parsed['port']}";
  52                 }
  53                 if ( isset( $parsed['query'] ) ) {
  54                         parse_str( $parsed['query'], $options );
  55                 }
  56                 if ( isset( $parsed['pass'] ) ) {
  57                         $options['password'] = $parsed['pass'];
  58                 }
  59                 if ( isset( $parsed['path'] ) ) {
  60                         $channel = str_replace( '/', '.', ltrim( $parsed['path'], '/' ) );
  61                 }
  62                 $pool = RedisConnectionPool::singleton( $options );
  63                 $conn = $pool->getConnection( $server );
  64                 if ( $conn !== false ) {
  65                         $conn->publish( $channel, $line );
  66                         return true;
  67                 } else {
  68                         return false;
  69                 }
  70         }
  71 }