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                 $instance = new $class( $lbConf );
  65                 MWLBFactory::setSchemaAliases( $instance );
  66
  67                 return $instance;
  68         },
  69
  70         'DBLoadBalancer' => function ( MediaWikiServices $services ) {
  71                 // just return the default LB from the DBLoadBalancerFactory service
  72                 return $services->getDBLoadBalancerFactory()->getMainLB();
  73         },
  74
  75         'SiteStore' => function ( MediaWikiServices $services ) {
  76                 $rawSiteStore = new DBSiteStore( $services->getDBLoadBalancer() );
  77
  78                 // TODO: replace wfGetCache with a CacheFactory service.
  79                 // TODO: replace wfIsHHVM with a capabilities service.
  80                 $cache = wfGetCache( wfIsHHVM() ? CACHE_ACCEL : CACHE_ANYTHING );
  81
  82                 return new CachingSiteStore( $rawSiteStore, $cache );
  83         },
  84
  85         'SiteLookup' => function ( MediaWikiServices $services ) {
  86                 $cacheFile = $services->getMainConfig()->get( 'SitesCacheFile' );
  87
  88                 if ( $cacheFile !== false ) {
  89                         return new FileBasedSiteLookup( $cacheFile );
  90                 } else {
  91                         // Use the default SiteStore as the SiteLookup implementation for now
  92                         return $services->getSiteStore();
  93                 }
  94         },
  95
  96         'ConfigFactory' => function ( MediaWikiServices $services ) {
  97                 // Use the bootstrap config to initialize the ConfigFactory.
  98                 $registry = $services->getBootstrapConfig()->get( 'ConfigRegistry' );
  99                 $factory = new ConfigFactory();
 100
 101                 foreach ( $registry as $name => $callback ) {
 102                         $factory->register( $name, $callback );
 103                 }
 104                 return $factory;
 105         },
 106
 107         'MainConfig' => function ( MediaWikiServices $services ) {
 108                 // Use the 'main' config from the ConfigFactory service.
 109                 return $services->getConfigFactory()->makeConfig( 'main' );
 110         },
 111
 112         'InterwikiLookup' => function ( MediaWikiServices $services ) {
 113                 global $wgContLang; // TODO: manage $wgContLang as a service
 114                 $config = $services->getMainConfig();
 115                 return new ClassicInterwikiLookup(
 116                         $wgContLang,
 117                         $services->getMainWANObjectCache(),
 118                         $config->get( 'InterwikiExpiry' ),
 119                         $config->get( 'InterwikiCache' ),
 120                         $config->get( 'InterwikiScopes' ),
 121                         $config->get( 'InterwikiFallbackSite' )
 122                 );
 123         },
 124
 125         'StatsdDataFactory' => function ( MediaWikiServices $services ) {
 126                 return new BufferingStatsdDataFactory(
 127                         rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ), '.' )
 128                 );
 129         },
 130
 131         'EventRelayerGroup' => function ( MediaWikiServices $services ) {
 132                 return new EventRelayerGroup( $services->getMainConfig()->get( 'EventRelayerConfig' ) );
 133         },
 134
 135         'SearchEngineFactory' => function ( MediaWikiServices $services ) {
 136                 return new SearchEngineFactory( $services->getSearchEngineConfig() );
 137         },
 138
 139         'SearchEngineConfig' => function ( MediaWikiServices $services ) {
 140                 global $wgContLang;
 141                 return new SearchEngineConfig( $services->getMainConfig(), $wgContLang );
 142         },
 143
 144         'SkinFactory' => function ( MediaWikiServices $services ) {
 145                 $factory = new SkinFactory();
 146
 147                 $names = $services->getMainConfig()->get( 'ValidSkinNames' );
 148
 149                 foreach ( $names as $name => $skin ) {
 150                         $factory->register( $name, $skin, function () use ( $name, $skin ) {
 151                                 $class = "Skin$skin";
 152                                 return new $class( $name );
 153                         } );
 154                 }
 155                 // Register a hidden "fallback" skin
 156                 $factory->register( 'fallback', 'Fallback', function () {
 157                         return new SkinFallback;
 158                 } );
 159                 // Register a hidden skin for api output
 160                 $factory->register( 'apioutput', 'ApiOutput', function () {
 161                         return new SkinApi;
 162                 } );
 163
 164                 return $factory;
 165         },
 166
 167         'WatchedItemStore' => function ( MediaWikiServices $services ) {
 168                 $store = new WatchedItemStore(
 169                         $services->getDBLoadBalancer(),
 170                         new HashBagOStuff( [ 'maxKeys' => 100 ] ),
 171                         $services->getReadOnlyMode(),
 172                         $services->getMainConfig()->get( 'UpdateRowsPerQuery' )
 173                 );
 174                 $store->setStatsdDataFactory( $services->getStatsdDataFactory() );
 175
 176                 if ( $services->getMainConfig()->get( 'ReadOnlyWatchedItemStore' ) ) {
 177                         $store = new NoWriteWatchedItemStore( $store );
 178                 }
 179
 180                 return $store;
 181         },
 182
 183         'WatchedItemQueryService' => function ( MediaWikiServices $services ) {
 184                 return new WatchedItemQueryService(
 185                         $services->getDBLoadBalancer(),
 186                         $services->getCommentStore(),
 187                         $services->getActorMigration()
 188                 );
 189         },
 190
 191         'CryptRand' => function ( MediaWikiServices $services ) {
 192                 $secretKey = $services->getMainConfig()->get( 'SecretKey' );
 193                 return new CryptRand(
 194                         [
 195                                 // To try vary the system information of the state a bit more
 196                                 // by including the system's hostname into the state
 197                                 'wfHostname',
 198                                 // It's mostly worthless but throw the wiki's id into the data
 199                                 // for a little more variance
 200                                 'wfWikiID',
 201                                 // If we have a secret key set then throw it into the state as well
 202                                 function () use ( $secretKey ) {
 203                                         return $secretKey ?: '';
 204                                 }
 205                         ],
 206                         // The config file is likely the most often edited file we know should
 207                         // be around so include its stat info into the state.
 208                         // The constant with its location will almost always be defined, as
 209                         // WebStart.php defines MW_CONFIG_FILE to $IP/LocalSettings.php unless
 210                         // being configured with MW_CONFIG_CALLBACK (e.g. the installer).
 211                         defined( 'MW_CONFIG_FILE' ) ? [ MW_CONFIG_FILE ] : [],
 212                         LoggerFactory::getInstance( 'CryptRand' )
 213                 );
 214         },
 215
 216         'CryptHKDF' => function ( MediaWikiServices $services ) {
 217                 $config = $services->getMainConfig();
 218
 219                 $secret = $config->get( 'HKDFSecret' ) ?: $config->get( 'SecretKey' );
 220                 if ( !$secret ) {
 221                         throw new RuntimeException( "Cannot use MWCryptHKDF without a secret." );
 222                 }
 223
 224                 // In HKDF, the context can be known to the attacker, but this will
 225                 // keep simultaneous runs from producing the same output.
 226                 $context = [ microtime(), getmypid(), gethostname() ];
 227
 228                 // Setup salt cache. Use APC, or fallback to the main cache if it isn't setup
 229                 $cache = $services->getLocalServerObjectCache();
 230                 if ( $cache instanceof EmptyBagOStuff ) {
 231                         $cache = ObjectCache::getLocalClusterInstance();
 232                 }
 233
 234                 return new CryptHKDF( $secret, $config->get( 'HKDFAlgorithm' ),
 235                         $cache, $context, $services->getCryptRand()
 236                 );
 237         },
 238
 239         'MediaHandlerFactory' => function ( MediaWikiServices $services ) {
 240                 return new MediaHandlerFactory(
 241                         $services->getMainConfig()->get( 'MediaHandlers' )
 242                 );
 243         },
 244
 245         'MimeAnalyzer' => function ( MediaWikiServices $services ) {
 246                 $logger = LoggerFactory::getInstance( 'Mime' );
 247                 $mainConfig = $services->getMainConfig();
 248                 $params = [
 249                         'typeFile' => $mainConfig->get( 'MimeTypeFile' ),
 250                         'infoFile' => $mainConfig->get( 'MimeInfoFile' ),
 251                         'xmlTypes' => $mainConfig->get( 'XMLMimeTypes' ),
 252                         'guessCallback' =>
 253                                 function ( $mimeAnalyzer, &$head, &$tail, $file, &$mime ) use ( $logger ) {
 254                                         // Also test DjVu
 255                                         $deja = new DjVuImage( $file );
 256                                         if ( $deja->isValid() ) {
 257                                                 $logger->info( __METHOD__ . ": detected $file as image/vnd.djvu\n" );
 258                                                 $mime = 'image/vnd.djvu';
 259
 260                                                 return;
 261                                         }
 262                                         // Some strings by reference for performance - assuming well-behaved hooks
 263                                         Hooks::run(
 264                                                 'MimeMagicGuessFromContent',
 265                                                 [ $mimeAnalyzer, &$head, &$tail, $file, &$mime ]
 266                                         );
 267                                 },
 268                         'extCallback' => function ( $mimeAnalyzer, $ext, &$mime ) {
 269                                 // Media handling extensions can improve the MIME detected
 270                                 Hooks::run( 'MimeMagicImproveFromExtension', [ $mimeAnalyzer, $ext, &$mime ] );
 271                         },
 272                         'initCallback' => function ( $mimeAnalyzer ) {
 273                                 // Allow media handling extensions adding MIME-types and MIME-info
 274                                 Hooks::run( 'MimeMagicInit', [ $mimeAnalyzer ] );
 275                         },
 276                         'logger' => $logger
 277                 ];
 278
 279                 if ( $params['infoFile'] === 'includes/mime.info' ) {
 280                         $params['infoFile'] = __DIR__ . "/libs/mime/mime.info";
 281                 }
 282
 283                 if ( $params['typeFile'] === 'includes/mime.types' ) {
 284                         $params['typeFile'] = __DIR__ . "/libs/mime/mime.types";
 285                 }
 286
 287                 $detectorCmd = $mainConfig->get( 'MimeDetectorCommand' );
 288                 if ( $detectorCmd ) {
 289                         $factory = $services->getShellCommandFactory();
 290                         $params['detectCallback'] = function ( $file ) use ( $detectorCmd, $factory ) {
 291                                 $result = $factory->create()
 292                                         // $wgMimeDetectorCommand can contain commands with parameters
 293                                         ->unsafeParams( $detectorCmd )
 294                                         ->params( $file )
 295                                         ->execute();
 296                                 return $result->getStdout();
 297                         };
 298                 }
 299
 300                 // XXX: MimeMagic::singleton currently requires this service to return an instance of MimeMagic
 301                 return new MimeMagic( $params );
 302         },
 303
 304         'ProxyLookup' => function ( MediaWikiServices $services ) {
 305                 $mainConfig = $services->getMainConfig();
 306                 return new ProxyLookup(
 307                         $mainConfig->get( 'SquidServers' ),
 308                         $mainConfig->get( 'SquidServersNoPurge' )
 309                 );
 310         },
 311
 312         'Parser' => function ( MediaWikiServices $services ) {
 313                 $conf = $services->getMainConfig()->get( 'ParserConf' );
 314                 return ObjectFactory::constructClassInstance( $conf['class'], [ $conf ] );
 315         },
 316
 317         'ParserCache' => function ( MediaWikiServices $services ) {
 318                 $config = $services->getMainConfig();
 319                 $cache = ObjectCache::getInstance( $config->get( 'ParserCacheType' ) );
 320                 wfDebugLog( 'caches', 'parser: ' . get_class( $cache ) );
 321
 322                 return new ParserCache(
 323                         $cache,
 324                         $config->get( 'CacheEpoch' )
 325                 );
 326         },
 327
 328         'LinkCache' => function ( MediaWikiServices $services ) {
 329                 return new LinkCache(
 330                         $services->getTitleFormatter(),
 331                         $services->getMainWANObjectCache()
 332                 );
 333         },
 334
 335         'LinkRendererFactory' => function ( MediaWikiServices $services ) {
 336                 return new LinkRendererFactory(
 337                         $services->getTitleFormatter(),
 338                         $services->getLinkCache()
 339                 );
 340         },
 341
 342         'LinkRenderer' => function ( MediaWikiServices $services ) {
 343                 global $wgUser;
 344
 345                 if ( defined( 'MW_NO_SESSION' ) ) {
 346                         return $services->getLinkRendererFactory()->create();
 347                 } else {
 348                         return $services->getLinkRendererFactory()->createForUser( $wgUser );
 349                 }
 350         },
 351
 352         'GenderCache' => function ( MediaWikiServices $services ) {
 353                 return new GenderCache();
 354         },
 355
 356         '_MediaWikiTitleCodec' => function ( MediaWikiServices $services ) {
 357                 global $wgContLang;
 358
 359                 return new MediaWikiTitleCodec(
 360                         $wgContLang,
 361                         $services->getGenderCache(),
 362                         $services->getMainConfig()->get( 'LocalInterwikis' )
 363                 );
 364         },
 365
 366         'TitleFormatter' => function ( MediaWikiServices $services ) {
 367                 return $services->getService( '_MediaWikiTitleCodec' );
 368         },
 369
 370         'TitleParser' => function ( MediaWikiServices $services ) {
 371                 return $services->getService( '_MediaWikiTitleCodec' );
 372         },
 373
 374         'MainObjectStash' => function ( MediaWikiServices $services ) {
 375                 $mainConfig = $services->getMainConfig();
 376
 377                 $id = $mainConfig->get( 'MainStash' );
 378                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
 379                         throw new UnexpectedValueException(
 380                                 "Cache type \"$id\" is not present in \$wgObjectCaches." );
 381                 }
 382
 383                 return \ObjectCache::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
 384         },
 385
 386         'MainWANObjectCache' => function ( MediaWikiServices $services ) {
 387                 $mainConfig = $services->getMainConfig();
 388
 389                 $id = $mainConfig->get( 'MainWANCache' );
 390                 if ( !isset( $mainConfig->get( 'WANObjectCaches' )[$id] ) ) {
 391                         throw new UnexpectedValueException(
 392                                 "WAN cache type \"$id\" is not present in \$wgWANObjectCaches." );
 393                 }
 394
 395                 $params = $mainConfig->get( 'WANObjectCaches' )[$id];
 396                 $objectCacheId = $params['cacheId'];
 397                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$objectCacheId] ) ) {
 398                         throw new UnexpectedValueException(
 399                                 "Cache type \"$objectCacheId\" is not present in \$wgObjectCaches." );
 400                 }
 401                 $params['store'] = $mainConfig->get( 'ObjectCaches' )[$objectCacheId];
 402
 403                 return \ObjectCache::newWANCacheFromParams( $params );
 404         },
 405
 406         'LocalServerObjectCache' => function ( MediaWikiServices $services ) {
 407                 $mainConfig = $services->getMainConfig();
 408
 409                 if ( function_exists( 'apc_fetch' ) ) {
 410                         $id = 'apc';
 411                 } elseif ( function_exists( 'apcu_fetch' ) ) {
 412                         $id = 'apcu';
 413                 } elseif ( function_exists( 'wincache_ucache_get' ) ) {
 414                         $id = 'wincache';
 415                 } else {
 416                         $id = CACHE_NONE;
 417                 }
 418
 419                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
 420                         throw new UnexpectedValueException(
 421                                 "Cache type \"$id\" is not present in \$wgObjectCaches." );
 422                 }
 423
 424                 return \ObjectCache::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
 425         },
 426
 427         'VirtualRESTServiceClient' => function ( MediaWikiServices $services ) {
 428                 $config = $services->getMainConfig()->get( 'VirtualRestConfig' );
 429
 430                 $vrsClient = new VirtualRESTServiceClient( new MultiHttpClient( [] ) );
 431                 foreach ( $config['paths'] as $prefix => $serviceConfig ) {
 432                         $class = $serviceConfig['class'];
 433                         // Merge in the global defaults
 434                         $constructArg = isset( $serviceConfig['options'] )
 435                                 ? $serviceConfig['options']
 436                                 : [];
 437                         $constructArg += $config['global'];
 438                         // Make the VRS service available at the mount point
 439                         $vrsClient->mount( $prefix, [ 'class' => $class, 'config' => $constructArg ] );
 440                 }
 441
 442                 return $vrsClient;
 443         },
 444
 445         'ConfiguredReadOnlyMode' => function ( MediaWikiServices $services ) {
 446                 return new ConfiguredReadOnlyMode( $services->getMainConfig() );
 447         },
 448
 449         'ReadOnlyMode' => function ( MediaWikiServices $services ) {
 450                 return new ReadOnlyMode(
 451                         $services->getConfiguredReadOnlyMode(),
 452                         $services->getDBLoadBalancer()
 453                 );
 454         },
 455
 456         'UploadRevisionImporter' => function ( MediaWikiServices $services ) {
 457                 return new ImportableUploadRevisionImporter(
 458                         $services->getMainConfig()->get( 'EnableUploads' ),
 459                         LoggerFactory::getInstance( 'UploadRevisionImporter' )
 460                 );
 461         },
 462
 463         'OldRevisionImporter' => function ( MediaWikiServices $services ) {
 464                 return new ImportableOldRevisionImporter(
 465                         true,
 466                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 467                         $services->getDBLoadBalancer()
 468                 );
 469         },
 470
 471         'WikiRevisionOldRevisionImporterNoUpdates' => function ( MediaWikiServices $services ) {
 472                 return new ImportableOldRevisionImporter(
 473                         false,
 474                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 475                         $services->getDBLoadBalancer()
 476                 );
 477         },
 478
 479         'ShellCommandFactory' => function ( MediaWikiServices $services ) {
 480                 $config = $services->getMainConfig();
 481
 482                 $limits = [
 483                         'time' => $config->get( 'MaxShellTime' ),
 484                         'walltime' => $config->get( 'MaxShellWallClockTime' ),
 485                         'memory' => $config->get( 'MaxShellMemory' ),
 486                         'filesize' => $config->get( 'MaxShellFileSize' ),
 487                 ];
 488                 $cgroup = $config->get( 'ShellCgroup' );
 489                 $restrictionMethod = $config->get( 'ShellRestrictionMethod' );
 490
 491                 $factory = new CommandFactory( $limits, $cgroup, $restrictionMethod );
 492                 $factory->setLogger( LoggerFactory::getInstance( 'exec' ) );
 493                 $factory->logStderr();
 494
 495                 return $factory;
 496         },
 497
 498         'ExternalStoreFactory' => function ( MediaWikiServices $services ) {
 499                 $config = $services->getMainConfig();
 500
 501                 return new ExternalStoreFactory(
 502                         $config->get( 'ExternalStores' )
 503                 );
 504         },
 505
 506         'RevisionStore' => function ( MediaWikiServices $services ) {
 507                 /** @var SqlBlobStore $blobStore */
 508                 $blobStore = $services->getService( '_SqlBlobStore' );
 509
 510                 $store = new RevisionStore(
 511                         $services->getDBLoadBalancer(),
 512                         $blobStore,
 513                         $services->getMainWANObjectCache(),
 514                         $services->getCommentStore(),
 515                         $services->getActorMigration()
 516                 );
 517
 518                 $store->setLogger( LoggerFactory::getInstance( 'RevisionStore' ) );
 519
 520                 $config = $services->getMainConfig();
 521                 $store->setContentHandlerUseDB( $config->get( 'ContentHandlerUseDB' ) );
 522
 523                 return $store;
 524         },
 525
 526         'RevisionLookup' => function ( MediaWikiServices $services ) {
 527                 return $services->getRevisionStore();
 528         },
 529
 530         'RevisionFactory' => function ( MediaWikiServices $services ) {
 531                 return $services->getRevisionStore();
 532         },
 533
 534         'BlobStoreFactory' => function ( MediaWikiServices $services ) {
 535                 global $wgContLang;
 536                 return new BlobStoreFactory(
 537                         $services->getDBLoadBalancer(),
 538                         $services->getMainWANObjectCache(),
 539                         $services->getMainConfig(),
 540                         $wgContLang
 541                 );
 542         },
 543
 544         'BlobStore' => function ( MediaWikiServices $services ) {
 545                 return $services->getService( '_SqlBlobStore' );
 546         },
 547
 548         '_SqlBlobStore' => function ( MediaWikiServices $services ) {
 549                 return $services->getBlobStoreFactory()->newSqlBlobStore();
 550         },
 551
 552         'ContentModelStore' => function ( MediaWikiServices $services ) {
 553                 return new NameTableStore(
 554                         $services->getDBLoadBalancer(),
 555                         $services->getMainWANObjectCache(),
 556                         LoggerFactory::getInstance( 'NameTableSqlStore' ),
 557                         'content_models',
 558                         'model_id',
 559                         'model_name'
 560                         /**
 561                          * No strtolower normalization is added to the service as there are examples of
 562                          * extensions that do not stick to this assumption.
 563                          * - extensions/examples/DataPages define( 'CONTENT_MODEL_XML_DATA','XML_DATA' );
 564                          * - extensions/Scribunto define( 'CONTENT_MODEL_SCRIBUNTO', 'Scribunto' );
 565                          */
 566                 );
 567         },
 568
 569         'SlotRoleStore' => function ( MediaWikiServices $services ) {
 570                 return new NameTableStore(
 571                         $services->getDBLoadBalancer(),
 572                         $services->getMainWANObjectCache(),
 573                         LoggerFactory::getInstance( 'NameTableSqlStore' ),
 574                         'slot_roles',
 575                         'role_id',
 576                         'role_name',
 577                         'strtolower'
 578                 );
 579         },
 580
 581         'PreferencesFactory' => function ( MediaWikiServices $services ) {
 582                 global $wgContLang;
 583                 $authManager = AuthManager::singleton();
 584                 $linkRenderer = $services->getLinkRendererFactory()->create();
 585                 $config = $services->getMainConfig();
 586                 $factory = new DefaultPreferencesFactory( $config, $wgContLang, $authManager, $linkRenderer );
 587                 $factory->setLogger( LoggerFactory::getInstance( 'preferences' ) );
 588
 589                 return $factory;
 590         },
 591
 592         'HttpRequestFactory' => function ( MediaWikiServices $services ) {
 593                 return new \MediaWiki\Http\HttpRequestFactory();
 594         },
 595
 596         'CommentStore' => function ( MediaWikiServices $services ) {
 597                 global $wgContLang;
 598                 return new CommentStore(
 599                         $wgContLang,
 600                         $services->getMainConfig()->get( 'CommentTableSchemaMigrationStage' )
 601                 );
 602         },
 603
 604         'ActorMigration' => function ( MediaWikiServices $services ) {
 605                 return new ActorMigration(
 606                         $services->getMainConfig()->get( 'ActorTableSchemaMigrationStage' )
 607                 );
 608         },
 609
 610         ///////////////////////////////////////////////////////////////////////////
 611         // NOTE: When adding a service here, don't forget to add a getter function
 612         // in the MediaWikiServices class. The convenience getter should just call
 613         // $this->getService( 'FooBarService' ).
 614         ///////////////////////////////////////////////////////////////////////////
 615
 616 ];