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\Auth\AuthManager;
  41 use MediaWiki\Config\ConfigRepository;
  42 use MediaWiki\Interwiki\ClassicInterwikiLookup;
  43 use MediaWiki\Linker\LinkRendererFactory;
  44 use MediaWiki\Logger\LoggerFactory;
  45 use MediaWiki\MediaWikiServices;
  46 use MediaWiki\Preferences\DefaultPreferencesFactory;
  47 use MediaWiki\Shell\CommandFactory;
  48 use MediaWiki\Storage\BlobStoreFactory;
  49 use MediaWiki\Storage\NameTableStore;
  50 use MediaWiki\Storage\RevisionStore;
  51 use MediaWiki\Storage\SqlBlobStore;
  52 use Wikimedia\ObjectFactory;
  53
  54 return [
  55         'DBLoadBalancerFactory' => function ( MediaWikiServices $services ) {
  56                 $mainConfig = $services->getMainConfig();
  57
  58                 $lbConf = MWLBFactory::applyDefaultConfig(
  59                         $mainConfig->get( 'LBFactoryConf' ),
  60                         $mainConfig,
  61                         $services->getConfiguredReadOnlyMode()
  62                 );
  63                 $class = MWLBFactory::getLBFactoryClass( $lbConf );
  64
  65                 $instance = new $class( $lbConf );
  66                 MWLBFactory::setSchemaAliases( $instance, $mainConfig );
  67
  68                 return $instance;
  69         },
  70
  71         'DBLoadBalancer' => function ( MediaWikiServices $services ) {
  72                 // just return the default LB from the DBLoadBalancerFactory service
  73                 return $services->getDBLoadBalancerFactory()->getMainLB();
  74         },
  75
  76         'SiteStore' => function ( MediaWikiServices $services ) {
  77                 $rawSiteStore = new DBSiteStore( $services->getDBLoadBalancer() );
  78
  79                 // TODO: replace wfGetCache with a CacheFactory service.
  80                 // TODO: replace wfIsHHVM with a capabilities service.
  81                 $cache = wfGetCache( wfIsHHVM() ? CACHE_ACCEL : CACHE_ANYTHING );
  82
  83                 return new CachingSiteStore( $rawSiteStore, $cache );
  84         },
  85
  86         'SiteLookup' => function ( MediaWikiServices $services ) {
  87                 $cacheFile = $services->getMainConfig()->get( 'SitesCacheFile' );
  88
  89                 if ( $cacheFile !== false ) {
  90                         return new FileBasedSiteLookup( $cacheFile );
  91                 } else {
  92                         // Use the default SiteStore as the SiteLookup implementation for now
  93                         return $services->getSiteStore();
  94                 }
  95         },
  96
  97         'ConfigFactory' => function ( MediaWikiServices $services ) {
  98                 // Use the bootstrap config to initialize the ConfigFactory.
  99                 $registry = $services->getBootstrapConfig()->get( 'ConfigRegistry' );
 100                 $factory = new ConfigFactory();
 101
 102                 foreach ( $registry as $name => $callback ) {
 103                         $factory->register( $name, $callback );
 104                 }
 105                 return $factory;
 106         },
 107
 108         'ConfigRepository' => function ( MediaWikiServices $services ) {
 109                 return new ConfigRepository( $services->getConfigFactory() );
 110         },
 111
 112         'MainConfig' => function ( MediaWikiServices $services ) {
 113                 // Use the 'main' config from the ConfigFactory service.
 114                 return $services->getConfigFactory()->makeConfig( 'main' );
 115         },
 116
 117         'InterwikiLookup' => function ( MediaWikiServices $services ) {
 118                 $config = $services->getMainConfig();
 119                 return new ClassicInterwikiLookup(
 120                         $services->getContentLanguage(),
 121                         $services->getMainWANObjectCache(),
 122                         $config->get( 'InterwikiExpiry' ),
 123                         $config->get( 'InterwikiCache' ),
 124                         $config->get( 'InterwikiScopes' ),
 125                         $config->get( 'InterwikiFallbackSite' )
 126                 );
 127         },
 128
 129         'StatsdDataFactory' => function ( MediaWikiServices $services ) {
 130                 return new BufferingStatsdDataFactory(
 131                         rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ), '.' )
 132                 );
 133         },
 134
 135         'PerDbNameStatsdDataFactory' => function ( MediaWikiServices $services ) {
 136                 $config = $services->getMainConfig();
 137                 $wiki = $config->get( 'DBname' );
 138                 return new BufferingStatsdDataFactory(
 139                         rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ) ) . '.' . $wiki
 140                 );
 141         },
 142
 143         'EventRelayerGroup' => function ( MediaWikiServices $services ) {
 144                 return new EventRelayerGroup( $services->getMainConfig()->get( 'EventRelayerConfig' ) );
 145         },
 146
 147         'SearchEngineFactory' => function ( MediaWikiServices $services ) {
 148                 return new SearchEngineFactory( $services->getSearchEngineConfig() );
 149         },
 150
 151         'SearchEngineConfig' => function ( MediaWikiServices $services ) {
 152                 return new SearchEngineConfig( $services->getMainConfig(),
 153                         $services->getContentLanguage() );
 154         },
 155
 156         'SkinFactory' => function ( MediaWikiServices $services ) {
 157                 $factory = new SkinFactory();
 158
 159                 $names = $services->getMainConfig()->get( 'ValidSkinNames' );
 160
 161                 foreach ( $names as $name => $skin ) {
 162                         $factory->register( $name, $skin, function () use ( $name, $skin ) {
 163                                 $class = "Skin$skin";
 164                                 return new $class( $name );
 165                         } );
 166                 }
 167                 // Register a hidden "fallback" skin
 168                 $factory->register( 'fallback', 'Fallback', function () {
 169                         return new SkinFallback;
 170                 } );
 171                 // Register a hidden skin for api output
 172                 $factory->register( 'apioutput', 'ApiOutput', function () {
 173                         return new SkinApi;
 174                 } );
 175
 176                 return $factory;
 177         },
 178
 179         'WatchedItemStore' => function ( MediaWikiServices $services ) {
 180                 $store = new WatchedItemStore(
 181                         $services->getDBLoadBalancer(),
 182                         new HashBagOStuff( [ 'maxKeys' => 100 ] ),
 183                         $services->getReadOnlyMode(),
 184                         $services->getMainConfig()->get( 'UpdateRowsPerQuery' )
 185                 );
 186                 $store->setStatsdDataFactory( $services->getStatsdDataFactory() );
 187
 188                 if ( $services->getMainConfig()->get( 'ReadOnlyWatchedItemStore' ) ) {
 189                         $store = new NoWriteWatchedItemStore( $store );
 190                 }
 191
 192                 return $store;
 193         },
 194
 195         'WatchedItemQueryService' => function ( MediaWikiServices $services ) {
 196                 return new WatchedItemQueryService(
 197                         $services->getDBLoadBalancer(),
 198                         $services->getCommentStore(),
 199                         $services->getActorMigration()
 200                 );
 201         },
 202
 203         'CryptRand' => function () {
 204                 return new CryptRand();
 205         },
 206
 207         'CryptHKDF' => function ( MediaWikiServices $services ) {
 208                 $config = $services->getMainConfig();
 209
 210                 $secret = $config->get( 'HKDFSecret' ) ?: $config->get( 'SecretKey' );
 211                 if ( !$secret ) {
 212                         throw new RuntimeException( "Cannot use MWCryptHKDF without a secret." );
 213                 }
 214
 215                 // In HKDF, the context can be known to the attacker, but this will
 216                 // keep simultaneous runs from producing the same output.
 217                 $context = [ microtime(), getmypid(), gethostname() ];
 218
 219                 // Setup salt cache. Use APC, or fallback to the main cache if it isn't setup
 220                 $cache = $services->getLocalServerObjectCache();
 221                 if ( $cache instanceof EmptyBagOStuff ) {
 222                         $cache = ObjectCache::getLocalClusterInstance();
 223                 }
 224
 225                 return new CryptHKDF( $secret, $config->get( 'HKDFAlgorithm' ), $cache, $context );
 226         },
 227
 228         'MediaHandlerFactory' => function ( MediaWikiServices $services ) {
 229                 return new MediaHandlerFactory(
 230                         $services->getMainConfig()->get( 'MediaHandlers' )
 231                 );
 232         },
 233
 234         'MimeAnalyzer' => function ( MediaWikiServices $services ) {
 235                 $logger = LoggerFactory::getInstance( 'Mime' );
 236                 $mainConfig = $services->getMainConfig();
 237                 $params = [
 238                         'typeFile' => $mainConfig->get( 'MimeTypeFile' ),
 239                         'infoFile' => $mainConfig->get( 'MimeInfoFile' ),
 240                         'xmlTypes' => $mainConfig->get( 'XMLMimeTypes' ),
 241                         'guessCallback' =>
 242                                 function ( $mimeAnalyzer, &$head, &$tail, $file, &$mime ) use ( $logger ) {
 243                                         // Also test DjVu
 244                                         $deja = new DjVuImage( $file );
 245                                         if ( $deja->isValid() ) {
 246                                                 $logger->info( __METHOD__ . ": detected $file as image/vnd.djvu\n" );
 247                                                 $mime = 'image/vnd.djvu';
 248
 249                                                 return;
 250                                         }
 251                                         // Some strings by reference for performance - assuming well-behaved hooks
 252                                         Hooks::run(
 253                                                 'MimeMagicGuessFromContent',
 254                                                 [ $mimeAnalyzer, &$head, &$tail, $file, &$mime ]
 255                                         );
 256                                 },
 257                         'extCallback' => function ( $mimeAnalyzer, $ext, &$mime ) {
 258                                 // Media handling extensions can improve the MIME detected
 259                                 Hooks::run( 'MimeMagicImproveFromExtension', [ $mimeAnalyzer, $ext, &$mime ] );
 260                         },
 261                         'initCallback' => function ( $mimeAnalyzer ) {
 262                                 // Allow media handling extensions adding MIME-types and MIME-info
 263                                 Hooks::run( 'MimeMagicInit', [ $mimeAnalyzer ] );
 264                         },
 265                         'logger' => $logger
 266                 ];
 267
 268                 if ( $params['infoFile'] === 'includes/mime.info' ) {
 269                         $params['infoFile'] = __DIR__ . "/libs/mime/mime.info";
 270                 }
 271
 272                 if ( $params['typeFile'] === 'includes/mime.types' ) {
 273                         $params['typeFile'] = __DIR__ . "/libs/mime/mime.types";
 274                 }
 275
 276                 $detectorCmd = $mainConfig->get( 'MimeDetectorCommand' );
 277                 if ( $detectorCmd ) {
 278                         $factory = $services->getShellCommandFactory();
 279                         $params['detectCallback'] = function ( $file ) use ( $detectorCmd, $factory ) {
 280                                 $result = $factory->create()
 281                                         // $wgMimeDetectorCommand can contain commands with parameters
 282                                         ->unsafeParams( $detectorCmd )
 283                                         ->params( $file )
 284                                         ->execute();
 285                                 return $result->getStdout();
 286                         };
 287                 }
 288
 289                 // XXX: MimeMagic::singleton currently requires this service to return an instance of MimeMagic
 290                 return new MimeMagic( $params );
 291         },
 292
 293         'ProxyLookup' => function ( MediaWikiServices $services ) {
 294                 $mainConfig = $services->getMainConfig();
 295                 return new ProxyLookup(
 296                         $mainConfig->get( 'SquidServers' ),
 297                         $mainConfig->get( 'SquidServersNoPurge' )
 298                 );
 299         },
 300
 301         'Parser' => function ( MediaWikiServices $services ) {
 302                 $conf = $services->getMainConfig()->get( 'ParserConf' );
 303                 return ObjectFactory::constructClassInstance( $conf['class'],
 304                         [ $conf, $services->getMagicWordFactory() ] );
 305         },
 306
 307         'ParserCache' => function ( MediaWikiServices $services ) {
 308                 $config = $services->getMainConfig();
 309                 $cache = ObjectCache::getInstance( $config->get( 'ParserCacheType' ) );
 310                 wfDebugLog( 'caches', 'parser: ' . get_class( $cache ) );
 311
 312                 return new ParserCache(
 313                         $cache,
 314                         $config->get( 'CacheEpoch' )
 315                 );
 316         },
 317
 318         'LinkCache' => function ( MediaWikiServices $services ) {
 319                 return new LinkCache(
 320                         $services->getTitleFormatter(),
 321                         $services->getMainWANObjectCache()
 322                 );
 323         },
 324
 325         'LinkRendererFactory' => function ( MediaWikiServices $services ) {
 326                 return new LinkRendererFactory(
 327                         $services->getTitleFormatter(),
 328                         $services->getLinkCache()
 329                 );
 330         },
 331
 332         'LinkRenderer' => function ( MediaWikiServices $services ) {
 333                 global $wgUser;
 334
 335                 if ( defined( 'MW_NO_SESSION' ) ) {
 336                         return $services->getLinkRendererFactory()->create();
 337                 } else {
 338                         return $services->getLinkRendererFactory()->createForUser( $wgUser );
 339                 }
 340         },
 341
 342         'GenderCache' => function ( MediaWikiServices $services ) {
 343                 return new GenderCache();
 344         },
 345
 346         '_MediaWikiTitleCodec' => function ( MediaWikiServices $services ) {
 347                 return new MediaWikiTitleCodec(
 348                         $services->getContentLanguage(),
 349                         $services->getGenderCache(),
 350                         $services->getMainConfig()->get( 'LocalInterwikis' )
 351                 );
 352         },
 353
 354         'TitleFormatter' => function ( MediaWikiServices $services ) {
 355                 return $services->getService( '_MediaWikiTitleCodec' );
 356         },
 357
 358         'TitleParser' => function ( MediaWikiServices $services ) {
 359                 return $services->getService( '_MediaWikiTitleCodec' );
 360         },
 361
 362         'MainObjectStash' => function ( MediaWikiServices $services ) {
 363                 $mainConfig = $services->getMainConfig();
 364
 365                 $id = $mainConfig->get( 'MainStash' );
 366                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
 367                         throw new UnexpectedValueException(
 368                                 "Cache type \"$id\" is not present in \$wgObjectCaches." );
 369                 }
 370
 371                 return \ObjectCache::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
 372         },
 373
 374         'MainWANObjectCache' => function ( MediaWikiServices $services ) {
 375                 $mainConfig = $services->getMainConfig();
 376
 377                 $id = $mainConfig->get( 'MainWANCache' );
 378                 if ( !isset( $mainConfig->get( 'WANObjectCaches' )[$id] ) ) {
 379                         throw new UnexpectedValueException(
 380                                 "WAN cache type \"$id\" is not present in \$wgWANObjectCaches." );
 381                 }
 382
 383                 $params = $mainConfig->get( 'WANObjectCaches' )[$id];
 384                 $objectCacheId = $params['cacheId'];
 385                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$objectCacheId] ) ) {
 386                         throw new UnexpectedValueException(
 387                                 "Cache type \"$objectCacheId\" is not present in \$wgObjectCaches." );
 388                 }
 389                 $params['store'] = $mainConfig->get( 'ObjectCaches' )[$objectCacheId];
 390
 391                 return \ObjectCache::newWANCacheFromParams( $params );
 392         },
 393
 394         'LocalServerObjectCache' => function ( MediaWikiServices $services ) {
 395                 $cacheId = \ObjectCache::detectLocalServerCache();
 396                 return \ObjectCache::newFromId( $cacheId );
 397         },
 398
 399         'VirtualRESTServiceClient' => function ( MediaWikiServices $services ) {
 400                 $config = $services->getMainConfig()->get( 'VirtualRestConfig' );
 401
 402                 $vrsClient = new VirtualRESTServiceClient( new MultiHttpClient( [] ) );
 403                 foreach ( $config['paths'] as $prefix => $serviceConfig ) {
 404                         $class = $serviceConfig['class'];
 405                         // Merge in the global defaults
 406                         $constructArg = $serviceConfig['options'] ?? [];
 407                         $constructArg += $config['global'];
 408                         // Make the VRS service available at the mount point
 409                         $vrsClient->mount( $prefix, [ 'class' => $class, 'config' => $constructArg ] );
 410                 }
 411
 412                 return $vrsClient;
 413         },
 414
 415         'ConfiguredReadOnlyMode' => function ( MediaWikiServices $services ) {
 416                 return new ConfiguredReadOnlyMode( $services->getMainConfig() );
 417         },
 418
 419         'ReadOnlyMode' => function ( MediaWikiServices $services ) {
 420                 return new ReadOnlyMode(
 421                         $services->getConfiguredReadOnlyMode(),
 422                         $services->getDBLoadBalancer()
 423                 );
 424         },
 425
 426         'UploadRevisionImporter' => function ( MediaWikiServices $services ) {
 427                 return new ImportableUploadRevisionImporter(
 428                         $services->getMainConfig()->get( 'EnableUploads' ),
 429                         LoggerFactory::getInstance( 'UploadRevisionImporter' )
 430                 );
 431         },
 432
 433         'OldRevisionImporter' => function ( MediaWikiServices $services ) {
 434                 return new ImportableOldRevisionImporter(
 435                         true,
 436                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 437                         $services->getDBLoadBalancer()
 438                 );
 439         },
 440
 441         'WikiRevisionOldRevisionImporterNoUpdates' => function ( MediaWikiServices $services ) {
 442                 return new ImportableOldRevisionImporter(
 443                         false,
 444                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 445                         $services->getDBLoadBalancer()
 446                 );
 447         },
 448
 449         'ShellCommandFactory' => function ( MediaWikiServices $services ) {
 450                 $config = $services->getMainConfig();
 451
 452                 $limits = [
 453                         'time' => $config->get( 'MaxShellTime' ),
 454                         'walltime' => $config->get( 'MaxShellWallClockTime' ),
 455                         'memory' => $config->get( 'MaxShellMemory' ),
 456                         'filesize' => $config->get( 'MaxShellFileSize' ),
 457                 ];
 458                 $cgroup = $config->get( 'ShellCgroup' );
 459                 $restrictionMethod = $config->get( 'ShellRestrictionMethod' );
 460
 461                 $factory = new CommandFactory( $limits, $cgroup, $restrictionMethod );
 462                 $factory->setLogger( LoggerFactory::getInstance( 'exec' ) );
 463                 $factory->logStderr();
 464
 465                 return $factory;
 466         },
 467
 468         'ExternalStoreFactory' => function ( MediaWikiServices $services ) {
 469                 $config = $services->getMainConfig();
 470
 471                 return new ExternalStoreFactory(
 472                         $config->get( 'ExternalStores' )
 473                 );
 474         },
 475
 476         'RevisionStore' => function ( MediaWikiServices $services ) {
 477                 /** @var SqlBlobStore $blobStore */
 478                 $blobStore = $services->getService( '_SqlBlobStore' );
 479
 480                 $store = new RevisionStore(
 481                         $services->getDBLoadBalancer(),
 482                         $blobStore,
 483                         $services->getMainWANObjectCache(),
 484                         $services->getCommentStore(),
 485                         $services->getContentModelStore(),
 486                         $services->getSlotRoleStore(),
 487                         $services->getMainConfig()->get( 'MultiContentRevisionSchemaMigrationStage' ),
 488                         $services->getActorMigration()
 489                 );
 490
 491                 $store->setLogger( LoggerFactory::getInstance( 'RevisionStore' ) );
 492
 493                 $config = $services->getMainConfig();
 494                 $store->setContentHandlerUseDB( $config->get( 'ContentHandlerUseDB' ) );
 495
 496                 return $store;
 497         },
 498
 499         'RevisionLookup' => function ( MediaWikiServices $services ) {
 500                 return $services->getRevisionStore();
 501         },
 502
 503         'RevisionFactory' => function ( MediaWikiServices $services ) {
 504                 return $services->getRevisionStore();
 505         },
 506
 507         'BlobStoreFactory' => function ( MediaWikiServices $services ) {
 508                 return new BlobStoreFactory(
 509                         $services->getDBLoadBalancer(),
 510                         $services->getMainWANObjectCache(),
 511                         $services->getMainConfig(),
 512                         $services->getContentLanguage()
 513                 );
 514         },
 515
 516         'BlobStore' => function ( MediaWikiServices $services ) {
 517                 return $services->getService( '_SqlBlobStore' );
 518         },
 519
 520         '_SqlBlobStore' => function ( MediaWikiServices $services ) {
 521                 return $services->getBlobStoreFactory()->newSqlBlobStore();
 522         },
 523
 524         'ContentModelStore' => function ( MediaWikiServices $services ) {
 525                 return new NameTableStore(
 526                         $services->getDBLoadBalancer(),
 527                         $services->getMainWANObjectCache(),
 528                         LoggerFactory::getInstance( 'NameTableSqlStore' ),
 529                         'content_models',
 530                         'model_id',
 531                         'model_name'
 532                         /**
 533                          * No strtolower normalization is added to the service as there are examples of
 534                          * extensions that do not stick to this assumption.
 535                          * - extensions/examples/DataPages define( 'CONTENT_MODEL_XML_DATA','XML_DATA' );
 536                          * - extensions/Scribunto define( 'CONTENT_MODEL_SCRIBUNTO', 'Scribunto' );
 537                          */
 538                 );
 539         },
 540
 541         'SlotRoleStore' => function ( MediaWikiServices $services ) {
 542                 return new NameTableStore(
 543                         $services->getDBLoadBalancer(),
 544                         $services->getMainWANObjectCache(),
 545                         LoggerFactory::getInstance( 'NameTableSqlStore' ),
 546                         'slot_roles',
 547                         'role_id',
 548                         'role_name',
 549                         'strtolower'
 550                 );
 551         },
 552
 553         'ChangeTagDefStore' => function ( MediaWikiServices $services ) {
 554                 return new NameTableStore(
 555                         $services->getDBLoadBalancer(),
 556                         $services->getMainWANObjectCache(),
 557                         LoggerFactory::getInstance( 'NameTableSqlStore' ),
 558                         'change_tag_def',
 559                         'ctd_id',
 560                         'ctd_name',
 561                         null,
 562                         false,
 563                         function ( $insertFields ) {
 564                                 $insertFields['ctd_user_defined'] = 0;
 565                                 $insertFields['ctd_count'] = 0;
 566                                 return $insertFields;
 567                         }
 568                 );
 569         },
 570
 571         'PreferencesFactory' => function ( MediaWikiServices $services ) {
 572                 $authManager = AuthManager::singleton();
 573                 $linkRenderer = $services->getLinkRendererFactory()->create();
 574                 $config = $services->getMainConfig();
 575                 $factory = new DefaultPreferencesFactory( $config, $services->getContentLanguage(),
 576                         $authManager, $linkRenderer );
 577                 $factory->setLogger( LoggerFactory::getInstance( 'preferences' ) );
 578
 579                 return $factory;
 580         },
 581
 582         'HttpRequestFactory' => function ( MediaWikiServices $services ) {
 583                 return new \MediaWiki\Http\HttpRequestFactory();
 584         },
 585
 586         'CommentStore' => function ( MediaWikiServices $services ) {
 587                 return new CommentStore(
 588                         $services->getContentLanguage(),
 589                         $services->getMainConfig()->get( 'CommentTableSchemaMigrationStage' )
 590                 );
 591         },
 592
 593         'ActorMigration' => function ( MediaWikiServices $services ) {
 594                 return new ActorMigration(
 595                         $services->getMainConfig()->get( 'ActorTableSchemaMigrationStage' )
 596                 );
 597         },
 598
 599         'MagicWordFactory' => function ( MediaWikiServices $services ) {
 600                 return new MagicWordFactory( $services->getContentLanguage() );
 601         },
 602
 603         'ContentLanguage' => function ( MediaWikiServices $services ) {
 604                 return Language::factory( $services->getMainConfig()->get( 'LanguageCode' ) );
 605         },
 606
 607         ///////////////////////////////////////////////////////////////////////////
 608         // NOTE: When adding a service here, don't forget to add a getter function
 609         // in the MediaWikiServices class. The convenience getter should just call
 610         // $this->getService( 'FooBarService' ).
 611         ///////////////////////////////////////////////////////////////////////////
 612
 613 ];