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