includes/rcfeed/RedisPubSubFeedEngine.php

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