includes/EventRelayerGroup.php

   1 <?php
   2 use MediaWiki\MediaWikiServices;
   3
   4 /**
   5  * Factory class for spawning EventRelayer objects using configuration
   6  *
   7  * @author Aaron Schulz
   8  * @since 1.27
   9  */
  10 class EventRelayerGroup {
  11         /** @var array[] */
  12         protected $configByChannel = [];
  13
  14         /** @var EventRelayer[] */
  15         protected $relayers = [];
  16
  17         /**
  18          * @param array[] $config Channel configuration
  19          */
  20         public function __construct( array $config ) {
  21                 $this->configByChannel = $config;
  22         }
  23
  24         /**
  25          * @deprecated since 1.27 Use MediaWikiServices::getInstance()->getEventRelayerGroup()
  26          * @return EventRelayerGroup
  27          */
  28         public static function singleton() {
  29                 return MediaWikiServices::getInstance()->getEventRelayerGroup();
  30         }
  31
  32         /**
  33          * @param string $channel
  34          * @return EventRelayer Relayer instance that handles the given channel
  35          */
  36         public function getRelayer( $channel ) {
  37                 $channelKey = isset( $this->configByChannel[$channel] )
  38                         ? $channel
  39                         : 'default';
  40
  41                 if ( !isset( $this->relayers[$channelKey] ) ) {
  42                         if ( !isset( $this->configByChannel[$channelKey] ) ) {
  43                                 throw new UnexpectedValueException( "No config for '$channelKey'" );
  44                         }
  45
  46                         $config = $this->configByChannel[$channelKey];
  47                         $class = $config['class'];
  48
  49                         $this->relayers[$channelKey] = new $class( $config );
  50                 }
  51
  52                 return $this->relayers[$channelKey];
  53         }
  54 }