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