includes/ServiceWiring.php

   1 <?php
   2 /**
   3  * Default wiring for MediaWiki services.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  *
  22  * This file is loaded by MediaWiki\MediaWikiServices::getInstance() during the
  23  * bootstrapping of the dependency injection framework.
  24  *
  25  * This file returns an array that associates service name with instantiator functions
  26  * that create the default instances for the services used by MediaWiki core.
  27  * For every service that MediaWiki core requires, an instantiator must be defined in
  28  * this file.
  29  *
  30  * @note As of version 1.27, MediaWiki is only beginning to use dependency injection.
  31  * The services defined here do not yet fully represent all services used by core,
  32  * much of the code still relies on global state for this accessing services.
  33  *
  34  * @since 1.27
  35  *
  36  * @see docs/injection.txt for an overview of using dependency injection in the
  37  *      MediaWiki code base.
  38  */
  39
  40 use MediaWiki\MediaWikiServices;
  41
  42 return [
  43         'DBLoadBalancerFactory' => function( MediaWikiServices $services ) {
  44                 $config = $services->getMainConfig()->get( 'LBFactoryConf' );
  45
  46                 $class = LBFactory::getLBFactoryClass( $config );
  47                 if ( !isset( $config['readOnlyReason'] ) ) {
  48                         // TODO: replace the global wfConfiguredReadOnlyReason() with a service.
  49                         $config['readOnlyReason'] = wfConfiguredReadOnlyReason();
  50                 }
  51
  52                 return new $class( $config );
  53         },
  54
  55         'DBLoadBalancer' => function( MediaWikiServices $services ) {
  56                 // just return the default LB from the DBLoadBalancerFactory service
  57                 return $services->getDBLoadBalancerFactory()->getMainLB();
  58         },
  59
  60         'SiteStore' => function( MediaWikiServices $services ) {
  61                 $rawSiteStore = new DBSiteStore( $services->getDBLoadBalancer() );
  62
  63                 // TODO: replace wfGetCache with a CacheFactory service.
  64                 // TODO: replace wfIsHHVM with a capabilities service.
  65                 $cache = wfGetCache( wfIsHHVM() ? CACHE_ACCEL : CACHE_ANYTHING );
  66
  67                 return new CachingSiteStore( $rawSiteStore, $cache );
  68         },
  69
  70         'SiteLookup' => function( MediaWikiServices $services ) {
  71                 // Use the default SiteStore as the SiteLookup implementation for now
  72                 return $services->getSiteStore();
  73         },
  74
  75         'ConfigFactory' => function( MediaWikiServices $services ) {
  76                 // Use the bootstrap config to initialize the ConfigFactory.
  77                 $registry = $services->getBootstrapConfig()->get( 'ConfigRegistry' );
  78                 $factory = new ConfigFactory();
  79
  80                 foreach ( $registry as $name => $callback ) {
  81                         $factory->register( $name, $callback );
  82                 }
  83                 return $factory;
  84         },
  85
  86         'MainConfig' => function( MediaWikiServices $services ) {
  87                 // Use the 'main' config from the ConfigFactory service.
  88                 return $services->getConfigFactory()->makeConfig( 'main' );
  89         },
  90
  91         'StatsdDataFactory' => function( MediaWikiServices $services ) {
  92                 return new BufferingStatsdDataFactory(
  93                         rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ), '.' )
  94                 );
  95         },
  96
  97         'EventRelayerGroup' => function( MediaWikiServices $services ) {
  98                 return new EventRelayerGroup( $services->getMainConfig()->get( 'EventRelayerConfig' ) );
  99         },
 100
 101         'SearchEngineFactory' => function( MediaWikiServices $services ) {
 102                 return new SearchEngineFactory( $services->getSearchEngineConfig() );
 103         },
 104
 105         'SearchEngineConfig' => function( MediaWikiServices $services ) {
 106                 global $wgContLang;
 107                 return new SearchEngineConfig( $services->getMainConfig(), $wgContLang );
 108         },
 109
 110         'SkinFactory' => function( MediaWikiServices $services ) {
 111                 $factory = new SkinFactory();
 112
 113                 $names = $services->getMainConfig()->get( 'ValidSkinNames' );
 114
 115                 foreach ( $names as $name => $skin ) {
 116                         $factory->register( $name, $skin, function () use ( $name, $skin ) {
 117                                 $class = "Skin$skin";
 118                                 return new $class( $name );
 119                         } );
 120                 }
 121                 // Register a hidden "fallback" skin
 122                 $factory->register( 'fallback', 'Fallback', function () {
 123                         return new SkinFallback;
 124                 } );
 125                 // Register a hidden skin for api output
 126                 $factory->register( 'apioutput', 'ApiOutput', function () {
 127                         return new SkinApi;
 128                 } );
 129
 130                 return $factory;
 131         },
 132
 133         'WatchedItemStore' => function( MediaWikiServices $services ) {
 134                 $store = new WatchedItemStore(
 135                         $services->getDBLoadBalancer(),
 136                         new HashBagOStuff( [ 'maxKeys' => 100 ] )
 137                 );
 138                 $store->setStatsdDataFactory( $services->getStatsdDataFactory() );
 139                 return $store;
 140         },
 141
 142         'GenderCache' => function( MediaWikiServices $services ) {
 143                 return new GenderCache();
 144         },
 145
 146         ///////////////////////////////////////////////////////////////////////////
 147         // NOTE: When adding a service here, don't forget to add a getter function
 148         // in the MediaWikiServices class. The convenience getter should just call
 149         // $this->getService( 'FooBarService' ).
 150         ///////////////////////////////////////////////////////////////////////////
 151
 152 ];