MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / EventRelayerGroup.php

diff --git a/includes/EventRelayerGroup.php b/includes/EventRelayerGroup.php
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+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Factory class for spawning EventRelayer objects using configuration
+ *
+ * @since 1.27
+ */
+class EventRelayerGroup {
+       /** @var array[] */
+       protected $configByChannel = [];
+
+       /** @var EventRelayer[] */
+       protected $relayers = [];
+
+       /**
+        * @param array[] $config Channel configuration
+        */
+       public function __construct( array $config ) {
+               $this->configByChannel = $config;
+       }
+
+       /**
+        * @deprecated since 1.27 Use MediaWikiServices::getInstance()->getEventRelayerGroup()
+        * @return EventRelayerGroup
+        */
+       public static function singleton() {
+               return MediaWikiServices::getInstance()->getEventRelayerGroup();
+       }
+
+       /**
+        * @param string $channel
+        * @return EventRelayer Relayer instance that handles the given channel
+        */
+       public function getRelayer( $channel ) {
+               $channelKey = isset( $this->configByChannel[$channel] )
+                       ? $channel
+                       : 'default';
+
+               if ( !isset( $this->relayers[$channelKey] ) ) {
+                       if ( !isset( $this->configByChannel[$channelKey] ) ) {
+                               throw new UnexpectedValueException( "No config for '$channelKey'" );
+                       }
+
+                       $config = $this->configByChannel[$channelKey];
+                       $class = $config['class'];
+
+                       $this->relayers[$channelKey] = new $class( $config );
+               }
+
+               return $this->relayers[$channelKey];
+       }
+}