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 Liuggio\StatsdClient\Factory\StatsdDataFactoryInterface;
  41 use MediaWiki\Auth\AuthManager;
  42 use MediaWiki\Block\BlockManager;
  43 use MediaWiki\Block\BlockRestrictionStore;
  44 use MediaWiki\Config\ConfigRepository;
  45 use MediaWiki\Config\ServiceOptions;
  46 use MediaWiki\Interwiki\ClassicInterwikiLookup;
  47 use MediaWiki\Interwiki\InterwikiLookup;
  48 use MediaWiki\Linker\LinkRenderer;
  49 use MediaWiki\Linker\LinkRendererFactory;
  50 use MediaWiki\Logger\LoggerFactory;
  51 use MediaWiki\MediaWikiServices;
  52 use MediaWiki\Permissions\PermissionManager;
  53 use MediaWiki\Preferences\PreferencesFactory;
  54 use MediaWiki\Preferences\DefaultPreferencesFactory;
  55 use MediaWiki\Revision\MainSlotRoleHandler;
  56 use MediaWiki\Revision\RevisionFactory;
  57 use MediaWiki\Revision\RevisionLookup;
  58 use MediaWiki\Revision\SlotRoleRegistry;
  59 use MediaWiki\Revision\RevisionRenderer;
  60 use MediaWiki\Revision\RevisionStore;
  61 use MediaWiki\Revision\RevisionStoreFactory;
  62 use MediaWiki\Shell\CommandFactory;
  63 use MediaWiki\Special\SpecialPageFactory;
  64 use MediaWiki\Storage\BlobStore;
  65 use MediaWiki\Storage\BlobStoreFactory;
  66 use MediaWiki\Storage\NameTableStoreFactory;
  67 use MediaWiki\Storage\SqlBlobStore;
  68 use MediaWiki\Storage\PageEditStash;
  69
  70 return [
  71         'ActorMigration' => function ( MediaWikiServices $services ) : ActorMigration {
  72                 return new ActorMigration(
  73                         $services->getMainConfig()->get( 'ActorTableSchemaMigrationStage' )
  74                 );
  75         },
  76
  77         'BlobStore' => function ( MediaWikiServices $services ) : BlobStore {
  78                 return $services->getService( '_SqlBlobStore' );
  79         },
  80
  81         'BlobStoreFactory' => function ( MediaWikiServices $services ) : BlobStoreFactory {
  82                 return new BlobStoreFactory(
  83                         $services->getDBLoadBalancerFactory(),
  84                         $services->getMainWANObjectCache(),
  85                         new ServiceOptions( BlobStoreFactory::$constructorOptions,
  86                                 $services->getMainConfig() ),
  87                         $services->getContentLanguage()
  88                 );
  89         },
  90
  91         'BlockManager' => function ( MediaWikiServices $services ) : BlockManager {
  92                 $config = $services->getMainConfig();
  93                 $context = RequestContext::getMain();
  94                 return new BlockManager(
  95                         $context->getUser(),
  96                         $context->getRequest(),
  97                         $config->get( 'ApplyIpBlocksToXff' ),
  98                         $config->get( 'CookieSetOnAutoblock' ),
  99                         $config->get( 'CookieSetOnIpBlock' ),
 100                         $config->get( 'DnsBlacklistUrls' ),
 101                         $config->get( 'EnableDnsBlacklist' ),
 102                         $config->get( 'ProxyList' ),
 103                         $config->get( 'ProxyWhitelist' ),
 104                         $config->get( 'SoftBlockRanges' )
 105                 );
 106         },
 107
 108         'BlockRestrictionStore' => function ( MediaWikiServices $services ) : BlockRestrictionStore {
 109                 return new BlockRestrictionStore(
 110                         $services->getDBLoadBalancer()
 111                 );
 112         },
 113
 114         'CommentStore' => function ( MediaWikiServices $services ) : CommentStore {
 115                 return new CommentStore(
 116                         $services->getContentLanguage(),
 117                         MIGRATION_NEW
 118                 );
 119         },
 120
 121         'ConfigFactory' => function ( MediaWikiServices $services ) : ConfigFactory {
 122                 // Use the bootstrap config to initialize the ConfigFactory.
 123                 $registry = $services->getBootstrapConfig()->get( 'ConfigRegistry' );
 124                 $factory = new ConfigFactory();
 125
 126                 foreach ( $registry as $name => $callback ) {
 127                         $factory->register( $name, $callback );
 128                 }
 129                 return $factory;
 130         },
 131
 132         'ConfigRepository' => function ( MediaWikiServices $services ) : ConfigRepository {
 133                 return new ConfigRepository( $services->getConfigFactory() );
 134         },
 135
 136         'ConfiguredReadOnlyMode' => function ( MediaWikiServices $services ) : ConfiguredReadOnlyMode {
 137                 $config = $services->getMainConfig();
 138                 return new ConfiguredReadOnlyMode(
 139                         $config->get( 'ReadOnly' ),
 140                         $config->get( 'ReadOnlyFile' )
 141                 );
 142         },
 143
 144         'ContentLanguage' => function ( MediaWikiServices $services ) : Language {
 145                 return Language::factory( $services->getMainConfig()->get( 'LanguageCode' ) );
 146         },
 147
 148         'CryptHKDF' => function ( MediaWikiServices $services ) : CryptHKDF {
 149                 $config = $services->getMainConfig();
 150
 151                 $secret = $config->get( 'HKDFSecret' ) ?: $config->get( 'SecretKey' );
 152                 if ( !$secret ) {
 153                         throw new RuntimeException( "Cannot use MWCryptHKDF without a secret." );
 154                 }
 155
 156                 // In HKDF, the context can be known to the attacker, but this will
 157                 // keep simultaneous runs from producing the same output.
 158                 $context = [ microtime(), getmypid(), gethostname() ];
 159
 160                 // Setup salt cache. Use APC, or fallback to the main cache if it isn't setup
 161                 $cache = $services->getLocalServerObjectCache();
 162                 if ( $cache instanceof EmptyBagOStuff ) {
 163                         $cache = ObjectCache::getLocalClusterInstance();
 164                 }
 165
 166                 return new CryptHKDF( $secret, $config->get( 'HKDFAlgorithm' ), $cache, $context );
 167         },
 168
 169         'DateFormatterFactory' => function () : DateFormatterFactory {
 170                 return new DateFormatterFactory;
 171         },
 172
 173         'DBLoadBalancer' => function ( MediaWikiServices $services ) : Wikimedia\Rdbms\LoadBalancer {
 174                 // just return the default LB from the DBLoadBalancerFactory service
 175                 return $services->getDBLoadBalancerFactory()->getMainLB();
 176         },
 177
 178         'DBLoadBalancerFactory' =>
 179         function ( MediaWikiServices $services ) : Wikimedia\Rdbms\LBFactory {
 180                 $mainConfig = $services->getMainConfig();
 181
 182                 $lbConf = MWLBFactory::applyDefaultConfig(
 183                         $mainConfig->get( 'LBFactoryConf' ),
 184                         new ServiceOptions( MWLBFactory::$applyDefaultConfigOptions, $mainConfig ),
 185                         $services->getConfiguredReadOnlyMode(),
 186                         $services->getLocalServerObjectCache(),
 187                         $services->getMainObjectStash(),
 188                         $services->getMainWANObjectCache()
 189                 );
 190                 $class = MWLBFactory::getLBFactoryClass( $lbConf );
 191
 192                 $instance = new $class( $lbConf );
 193                 MWLBFactory::setSchemaAliases( $instance, $mainConfig->get( 'DBtype' ) );
 194
 195                 return $instance;
 196         },
 197
 198         'EventRelayerGroup' => function ( MediaWikiServices $services ) : EventRelayerGroup {
 199                 return new EventRelayerGroup( $services->getMainConfig()->get( 'EventRelayerConfig' ) );
 200         },
 201
 202         'ExternalStoreFactory' => function ( MediaWikiServices $services ) : ExternalStoreFactory {
 203                 $config = $services->getMainConfig();
 204
 205                 return new ExternalStoreFactory(
 206                         $config->get( 'ExternalStores' )
 207                 );
 208         },
 209
 210         'GenderCache' => function ( MediaWikiServices $services ) : GenderCache {
 211                 return new GenderCache( $services->getNamespaceInfo() );
 212         },
 213
 214         'HttpRequestFactory' =>
 215         function ( MediaWikiServices $services ) : \MediaWiki\Http\HttpRequestFactory {
 216                 return new \MediaWiki\Http\HttpRequestFactory();
 217         },
 218
 219         'InterwikiLookup' => function ( MediaWikiServices $services ) : InterwikiLookup {
 220                 $config = $services->getMainConfig();
 221                 return new ClassicInterwikiLookup(
 222                         $services->getContentLanguage(),
 223                         $services->getMainWANObjectCache(),
 224                         $config->get( 'InterwikiExpiry' ),
 225                         $config->get( 'InterwikiCache' ),
 226                         $config->get( 'InterwikiScopes' ),
 227                         $config->get( 'InterwikiFallbackSite' )
 228                 );
 229         },
 230
 231         'LinkCache' => function ( MediaWikiServices $services ) : LinkCache {
 232                 return new LinkCache(
 233                         $services->getTitleFormatter(),
 234                         $services->getMainWANObjectCache()
 235                 );
 236         },
 237
 238         'LinkRenderer' => function ( MediaWikiServices $services ) : LinkRenderer {
 239                 if ( defined( 'MW_NO_SESSION' ) ) {
 240                         return $services->getLinkRendererFactory()->create();
 241                 } else {
 242                         return $services->getLinkRendererFactory()->createForUser(
 243                                 RequestContext::getMain()->getUser()
 244                         );
 245                 }
 246         },
 247
 248         'LinkRendererFactory' => function ( MediaWikiServices $services ) : LinkRendererFactory {
 249                 return new LinkRendererFactory(
 250                         $services->getTitleFormatter(),
 251                         $services->getLinkCache()
 252                 );
 253         },
 254
 255         'LocalServerObjectCache' => function ( MediaWikiServices $services ) : BagOStuff {
 256                 $cacheId = \ObjectCache::detectLocalServerCache();
 257                 return \ObjectCache::newFromId( $cacheId );
 258         },
 259
 260         'MagicWordFactory' => function ( MediaWikiServices $services ) : MagicWordFactory {
 261                 return new MagicWordFactory( $services->getContentLanguage() );
 262         },
 263
 264         'MainConfig' => function ( MediaWikiServices $services ) : Config {
 265                 // Use the 'main' config from the ConfigFactory service.
 266                 return $services->getConfigFactory()->makeConfig( 'main' );
 267         },
 268
 269         'MainObjectStash' => function ( MediaWikiServices $services ) : BagOStuff {
 270                 $mainConfig = $services->getMainConfig();
 271
 272                 $id = $mainConfig->get( 'MainStash' );
 273                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
 274                         throw new UnexpectedValueException(
 275                                 "Cache type \"$id\" is not present in \$wgObjectCaches." );
 276                 }
 277
 278                 return \ObjectCache::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
 279         },
 280
 281         'MainWANObjectCache' => function ( MediaWikiServices $services ) : WANObjectCache {
 282                 $mainConfig = $services->getMainConfig();
 283
 284                 $id = $mainConfig->get( 'MainWANCache' );
 285                 if ( !isset( $mainConfig->get( 'WANObjectCaches' )[$id] ) ) {
 286                         throw new UnexpectedValueException(
 287                                 "WAN cache type \"$id\" is not present in \$wgWANObjectCaches." );
 288                 }
 289
 290                 $params = $mainConfig->get( 'WANObjectCaches' )[$id];
 291                 $objectCacheId = $params['cacheId'];
 292                 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$objectCacheId] ) ) {
 293                         throw new UnexpectedValueException(
 294                                 "Cache type \"$objectCacheId\" is not present in \$wgObjectCaches." );
 295                 }
 296                 $params['store'] = $mainConfig->get( 'ObjectCaches' )[$objectCacheId];
 297
 298                 return \ObjectCache::newWANCacheFromParams( $params );
 299         },
 300
 301         'MediaHandlerFactory' => function ( MediaWikiServices $services ) : MediaHandlerFactory {
 302                 return new MediaHandlerFactory(
 303                         $services->getMainConfig()->get( 'MediaHandlers' )
 304                 );
 305         },
 306
 307         'MimeAnalyzer' => function ( MediaWikiServices $services ) : MimeAnalyzer {
 308                 $logger = LoggerFactory::getInstance( 'Mime' );
 309                 $mainConfig = $services->getMainConfig();
 310                 $params = [
 311                         'typeFile' => $mainConfig->get( 'MimeTypeFile' ),
 312                         'infoFile' => $mainConfig->get( 'MimeInfoFile' ),
 313                         'xmlTypes' => $mainConfig->get( 'XMLMimeTypes' ),
 314                         'guessCallback' =>
 315                                 function ( $mimeAnalyzer, &$head, &$tail, $file, &$mime ) use ( $logger ) {
 316                                         // Also test DjVu
 317                                         $deja = new DjVuImage( $file );
 318                                         if ( $deja->isValid() ) {
 319                                                 $logger->info( "Detected $file as image/vnd.djvu\n" );
 320                                                 $mime = 'image/vnd.djvu';
 321
 322                                                 return;
 323                                         }
 324                                         // Some strings by reference for performance - assuming well-behaved hooks
 325                                         Hooks::run(
 326                                                 'MimeMagicGuessFromContent',
 327                                                 [ $mimeAnalyzer, &$head, &$tail, $file, &$mime ]
 328                                         );
 329                                 },
 330                         'extCallback' => function ( $mimeAnalyzer, $ext, &$mime ) {
 331                                 // Media handling extensions can improve the MIME detected
 332                                 Hooks::run( 'MimeMagicImproveFromExtension', [ $mimeAnalyzer, $ext, &$mime ] );
 333                         },
 334                         'initCallback' => function ( $mimeAnalyzer ) {
 335                                 // Allow media handling extensions adding MIME-types and MIME-info
 336                                 Hooks::run( 'MimeMagicInit', [ $mimeAnalyzer ] );
 337                         },
 338                         'logger' => $logger
 339                 ];
 340
 341                 if ( $params['infoFile'] === 'includes/mime.info' ) {
 342                         $params['infoFile'] = __DIR__ . "/libs/mime/mime.info";
 343                 }
 344
 345                 if ( $params['typeFile'] === 'includes/mime.types' ) {
 346                         $params['typeFile'] = __DIR__ . "/libs/mime/mime.types";
 347                 }
 348
 349                 $detectorCmd = $mainConfig->get( 'MimeDetectorCommand' );
 350                 if ( $detectorCmd ) {
 351                         $factory = $services->getShellCommandFactory();
 352                         $params['detectCallback'] = function ( $file ) use ( $detectorCmd, $factory ) {
 353                                 $result = $factory->create()
 354                                         // $wgMimeDetectorCommand can contain commands with parameters
 355                                         ->unsafeParams( $detectorCmd )
 356                                         ->params( $file )
 357                                         ->execute();
 358                                 return $result->getStdout();
 359                         };
 360                 }
 361
 362                 return new MimeAnalyzer( $params );
 363         },
 364
 365         'NamespaceInfo' => function ( MediaWikiServices $services ) : NamespaceInfo {
 366                 return new NamespaceInfo( new ServiceOptions( NamespaceInfo::$constructorOptions,
 367                         $services->getMainConfig() ) );
 368         },
 369
 370         'NameTableStoreFactory' => function ( MediaWikiServices $services ) : NameTableStoreFactory {
 371                 return new NameTableStoreFactory(
 372                         $services->getDBLoadBalancerFactory(),
 373                         $services->getMainWANObjectCache(),
 374                         LoggerFactory::getInstance( 'NameTableSqlStore' )
 375                 );
 376         },
 377
 378         'OldRevisionImporter' => function ( MediaWikiServices $services ) : OldRevisionImporter {
 379                 return new ImportableOldRevisionImporter(
 380                         true,
 381                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 382                         $services->getDBLoadBalancer()
 383                 );
 384         },
 385
 386         'PageEditStash' => function ( MediaWikiServices $services ) : PageEditStash {
 387                 $config = $services->getMainConfig();
 388
 389                 return new PageEditStash(
 390                         ObjectCache::getLocalClusterInstance(),
 391                         $services->getDBLoadBalancer(),
 392                         LoggerFactory::getInstance( 'StashEdit' ),
 393                         $services->getStatsdDataFactory(),
 394                         defined( 'MEDIAWIKI_JOB_RUNNER' ) || $config->get( 'CommandLineMode' )
 395                                 ? PageEditStash::INITIATOR_JOB_OR_CLI
 396                                 : PageEditStash::INITIATOR_USER
 397                 );
 398         },
 399
 400         'Parser' => function ( MediaWikiServices $services ) : Parser {
 401                 return $services->getParserFactory()->create();
 402         },
 403
 404         'ParserCache' => function ( MediaWikiServices $services ) : ParserCache {
 405                 $config = $services->getMainConfig();
 406                 $cache = ObjectCache::getInstance( $config->get( 'ParserCacheType' ) );
 407                 wfDebugLog( 'caches', 'parser: ' . get_class( $cache ) );
 408
 409                 return new ParserCache(
 410                         $cache,
 411                         $config->get( 'CacheEpoch' )
 412                 );
 413         },
 414
 415         'ParserFactory' => function ( MediaWikiServices $services ) : ParserFactory {
 416                 return new ParserFactory(
 417                         $services->getMainConfig()->get( 'ParserConf' ),
 418                         $services->getMagicWordFactory(),
 419                         $services->getContentLanguage(),
 420                         wfUrlProtocols(),
 421                         $services->getSpecialPageFactory(),
 422                         $services->getMainConfig(),
 423                         $services->getLinkRendererFactory(),
 424                         $services->getNamespaceInfo()
 425                 );
 426         },
 427
 428         'PasswordFactory' => function ( MediaWikiServices $services ) : PasswordFactory {
 429                 $config = $services->getMainConfig();
 430                 return new PasswordFactory(
 431                         $config->get( 'PasswordConfig' ),
 432                         $config->get( 'PasswordDefault' )
 433                 );
 434         },
 435
 436         'PerDbNameStatsdDataFactory' =>
 437         function ( MediaWikiServices $services ) : StatsdDataFactoryInterface {
 438                 $config = $services->getMainConfig();
 439                 $wiki = $config->get( 'DBname' );
 440                 return new PrefixingStatsdDataFactoryProxy(
 441                         $services->getStatsdDataFactory(),
 442                         $wiki
 443                 );
 444         },
 445
 446         'PermissionManager' => function ( MediaWikiServices $services ) : PermissionManager {
 447                 $config = $services->getMainConfig();
 448                 return new PermissionManager(
 449                         $services->getSpecialPageFactory(),
 450                         $config->get( 'WhitelistRead' ),
 451                         $config->get( 'WhitelistReadRegexp' ),
 452                         $config->get( 'EmailConfirmToEdit' ),
 453                         $config->get( 'BlockDisablesLogin' ),
 454                         $services->getNamespaceInfo()
 455                 );
 456         },
 457
 458         'PreferencesFactory' => function ( MediaWikiServices $services ) : PreferencesFactory {
 459                 $factory = new DefaultPreferencesFactory(
 460                         new ServiceOptions(
 461                                 DefaultPreferencesFactory::$constructorOptions, $services->getMainConfig() ),
 462                         $services->getContentLanguage(),
 463                         AuthManager::singleton(),
 464                         $services->getLinkRendererFactory()->create(),
 465                         $services->getNamespaceInfo()
 466                 );
 467                 $factory->setLogger( LoggerFactory::getInstance( 'preferences' ) );
 468
 469                 return $factory;
 470         },
 471
 472         'ProxyLookup' => function ( MediaWikiServices $services ) : ProxyLookup {
 473                 $mainConfig = $services->getMainConfig();
 474                 return new ProxyLookup(
 475                         $mainConfig->get( 'SquidServers' ),
 476                         $mainConfig->get( 'SquidServersNoPurge' )
 477                 );
 478         },
 479
 480         'ReadOnlyMode' => function ( MediaWikiServices $services ) : ReadOnlyMode {
 481                 return new ReadOnlyMode(
 482                         $services->getConfiguredReadOnlyMode(),
 483                         $services->getDBLoadBalancer()
 484                 );
 485         },
 486
 487         'ResourceLoader' => function ( MediaWikiServices $services ) : ResourceLoader {
 488                 // @todo This should not take a Config object, but it's not so easy to remove because it
 489                 // exposes it in a getter, which is actually used.
 490                 global $IP;
 491                 $config = $services->getMainConfig();
 492
 493                 $rl = new ResourceLoader(
 494                         $config,
 495                         LoggerFactory::getInstance( 'resourceloader' )
 496                 );
 497
 498                 $rl->addSource( $config->get( 'ResourceLoaderSources' ) );
 499
 500                 // Core modules, then extension/skin modules
 501                 $rl->register( include "$IP/resources/Resources.php" );
 502                 $rl->register( $config->get( 'ResourceModules' ) );
 503                 Hooks::run( 'ResourceLoaderRegisterModules', [ &$rl ] );
 504
 505                 if ( $config->get( 'EnableJavaScriptTest' ) === true ) {
 506                         $rl->registerTestModules();
 507                 }
 508
 509                 return $rl;
 510         },
 511
 512         'RevisionFactory' => function ( MediaWikiServices $services ) : RevisionFactory {
 513                 return $services->getRevisionStore();
 514         },
 515
 516         'RevisionLookup' => function ( MediaWikiServices $services ) : RevisionLookup {
 517                 return $services->getRevisionStore();
 518         },
 519
 520         'RevisionRenderer' => function ( MediaWikiServices $services ) : RevisionRenderer {
 521                 $renderer = new RevisionRenderer(
 522                         $services->getDBLoadBalancer(),
 523                         $services->getSlotRoleRegistry()
 524                 );
 525
 526                 $renderer->setLogger( LoggerFactory::getInstance( 'SaveParse' ) );
 527                 return $renderer;
 528         },
 529
 530         'RevisionStore' => function ( MediaWikiServices $services ) : RevisionStore {
 531                 return $services->getRevisionStoreFactory()->getRevisionStore();
 532         },
 533
 534         'RevisionStoreFactory' => function ( MediaWikiServices $services ) : RevisionStoreFactory {
 535                 $config = $services->getMainConfig();
 536                 $store = new RevisionStoreFactory(
 537                         $services->getDBLoadBalancerFactory(),
 538                         $services->getBlobStoreFactory(),
 539                         $services->getNameTableStoreFactory(),
 540                         $services->getSlotRoleRegistry(),
 541                         $services->getMainWANObjectCache(),
 542                         $services->getCommentStore(),
 543                         $services->getActorMigration(),
 544                         $config->get( 'MultiContentRevisionSchemaMigrationStage' ),
 545                         LoggerFactory::getProvider(),
 546                         $config->get( 'ContentHandlerUseDB' )
 547                 );
 548
 549                 return $store;
 550         },
 551
 552         'SearchEngineConfig' => function ( MediaWikiServices $services ) : SearchEngineConfig {
 553                 // @todo This should not take a Config object, but it's not so easy to remove because it
 554                 // exposes it in a getter, which is actually used.
 555                 return new SearchEngineConfig( $services->getMainConfig(),
 556                         $services->getContentLanguage() );
 557         },
 558
 559         'SearchEngineFactory' => function ( MediaWikiServices $services ) : SearchEngineFactory {
 560                 return new SearchEngineFactory( $services->getSearchEngineConfig() );
 561         },
 562
 563         'ShellCommandFactory' => function ( MediaWikiServices $services ) : CommandFactory {
 564                 $config = $services->getMainConfig();
 565
 566                 $limits = [
 567                         'time' => $config->get( 'MaxShellTime' ),
 568                         'walltime' => $config->get( 'MaxShellWallClockTime' ),
 569                         'memory' => $config->get( 'MaxShellMemory' ),
 570                         'filesize' => $config->get( 'MaxShellFileSize' ),
 571                 ];
 572                 $cgroup = $config->get( 'ShellCgroup' );
 573                 $restrictionMethod = $config->get( 'ShellRestrictionMethod' );
 574
 575                 $factory = new CommandFactory( $limits, $cgroup, $restrictionMethod );
 576                 $factory->setLogger( LoggerFactory::getInstance( 'exec' ) );
 577                 $factory->logStderr();
 578
 579                 return $factory;
 580         },
 581
 582         'SiteLookup' => function ( MediaWikiServices $services ) : SiteLookup {
 583                 // Use SiteStore as the SiteLookup as well. This was originally separated
 584                 // to allow for a cacheable read-only interface (using FileBasedSiteLookup),
 585                 // but this was never used. SiteStore has caching (see below).
 586                 return $services->getSiteStore();
 587         },
 588
 589         'SiteStore' => function ( MediaWikiServices $services ) : SiteStore {
 590                 $rawSiteStore = new DBSiteStore( $services->getDBLoadBalancer() );
 591
 592                 // TODO: replace wfGetCache with a CacheFactory service.
 593                 // TODO: replace wfIsHHVM with a capabilities service.
 594                 $cache = wfGetCache( wfIsHHVM() ? CACHE_ACCEL : CACHE_ANYTHING );
 595
 596                 return new CachingSiteStore( $rawSiteStore, $cache );
 597         },
 598
 599         'SkinFactory' => function ( MediaWikiServices $services ) : SkinFactory {
 600                 $factory = new SkinFactory();
 601
 602                 $names = $services->getMainConfig()->get( 'ValidSkinNames' );
 603
 604                 foreach ( $names as $name => $skin ) {
 605                         $factory->register( $name, $skin, function () use ( $name, $skin ) {
 606                                 $class = "Skin$skin";
 607                                 return new $class( $name );
 608                         } );
 609                 }
 610                 // Register a hidden "fallback" skin
 611                 $factory->register( 'fallback', 'Fallback', function () {
 612                         return new SkinFallback;
 613                 } );
 614                 // Register a hidden skin for api output
 615                 $factory->register( 'apioutput', 'ApiOutput', function () {
 616                         return new SkinApi;
 617                 } );
 618
 619                 return $factory;
 620         },
 621
 622         'SlotRoleRegistry' => function ( MediaWikiServices $services ) : SlotRoleRegistry {
 623                 $config = $services->getMainConfig();
 624
 625                 $registry = new SlotRoleRegistry(
 626                         $services->getNameTableStoreFactory()->getSlotRoles()
 627                 );
 628
 629                 $registry->defineRole( 'main', function () use ( $config ) {
 630                         return new MainSlotRoleHandler(
 631                                 $config->get( 'NamespaceContentModels' )
 632                         );
 633                 } );
 634
 635                 return $registry;
 636         },
 637
 638         'SpecialPageFactory' => function ( MediaWikiServices $services ) : SpecialPageFactory {
 639                 return new SpecialPageFactory(
 640                         new ServiceOptions(
 641                                 SpecialPageFactory::$constructorOptions, $services->getMainConfig() ),
 642                         $services->getContentLanguage()
 643                 );
 644         },
 645
 646         'StatsdDataFactory' => function ( MediaWikiServices $services ) : IBufferingStatsdDataFactory {
 647                 return new BufferingStatsdDataFactory(
 648                         rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ), '.' )
 649                 );
 650         },
 651
 652         'TitleFormatter' => function ( MediaWikiServices $services ) : TitleFormatter {
 653                 return $services->getService( '_MediaWikiTitleCodec' );
 654         },
 655
 656         'TitleParser' => function ( MediaWikiServices $services ) : TitleParser {
 657                 return $services->getService( '_MediaWikiTitleCodec' );
 658         },
 659
 660         'UploadRevisionImporter' => function ( MediaWikiServices $services ) : UploadRevisionImporter {
 661                 return new ImportableUploadRevisionImporter(
 662                         $services->getMainConfig()->get( 'EnableUploads' ),
 663                         LoggerFactory::getInstance( 'UploadRevisionImporter' )
 664                 );
 665         },
 666
 667         'VirtualRESTServiceClient' =>
 668         function ( MediaWikiServices $services ) : VirtualRESTServiceClient {
 669                 $config = $services->getMainConfig()->get( 'VirtualRestConfig' );
 670
 671                 $vrsClient = new VirtualRESTServiceClient( new MultiHttpClient( [] ) );
 672                 foreach ( $config['paths'] as $prefix => $serviceConfig ) {
 673                         $class = $serviceConfig['class'];
 674                         // Merge in the global defaults
 675                         $constructArg = $serviceConfig['options'] ?? [];
 676                         $constructArg += $config['global'];
 677                         // Make the VRS service available at the mount point
 678                         $vrsClient->mount( $prefix, [ 'class' => $class, 'config' => $constructArg ] );
 679                 }
 680
 681                 return $vrsClient;
 682         },
 683
 684         'WatchedItemQueryService' =>
 685         function ( MediaWikiServices $services ) : WatchedItemQueryService {
 686                 return new WatchedItemQueryService(
 687                         $services->getDBLoadBalancer(),
 688                         $services->getCommentStore(),
 689                         $services->getActorMigration(),
 690                         $services->getWatchedItemStore()
 691                 );
 692         },
 693
 694         'WatchedItemStore' => function ( MediaWikiServices $services ) : WatchedItemStore {
 695                 $store = new WatchedItemStore(
 696                         $services->getDBLoadBalancerFactory(),
 697                         JobQueueGroup::singleton(),
 698                         $services->getMainObjectStash(),
 699                         new HashBagOStuff( [ 'maxKeys' => 100 ] ),
 700                         $services->getReadOnlyMode(),
 701                         $services->getMainConfig()->get( 'UpdateRowsPerQuery' )
 702                 );
 703                 $store->setStatsdDataFactory( $services->getStatsdDataFactory() );
 704
 705                 if ( $services->getMainConfig()->get( 'ReadOnlyWatchedItemStore' ) ) {
 706                         $store = new NoWriteWatchedItemStore( $store );
 707                 }
 708
 709                 return $store;
 710         },
 711
 712         'WikiRevisionOldRevisionImporterNoUpdates' =>
 713         function ( MediaWikiServices $services ) : ImportableOldRevisionImporter {
 714                 return new ImportableOldRevisionImporter(
 715                         false,
 716                         LoggerFactory::getInstance( 'OldRevisionImporter' ),
 717                         $services->getDBLoadBalancer()
 718                 );
 719         },
 720
 721         '_MediaWikiTitleCodec' => function ( MediaWikiServices $services ) : MediaWikiTitleCodec {
 722                 return new MediaWikiTitleCodec(
 723                         $services->getContentLanguage(),
 724                         $services->getGenderCache(),
 725                         $services->getMainConfig()->get( 'LocalInterwikis' ),
 726                         $services->getInterwikiLookup(),
 727                         $services->getNamespaceInfo()
 728                 );
 729         },
 730
 731         '_SqlBlobStore' => function ( MediaWikiServices $services ) : SqlBlobStore {
 732                 return $services->getBlobStoreFactory()->newSqlBlobStore();
 733         },
 734
 735         ///////////////////////////////////////////////////////////////////////////
 736         // NOTE: When adding a service here, don't forget to add a getter function
 737         // in the MediaWikiServices class. The convenience getter should just call
 738         // $this->getService( 'FooBarService' ).
 739         ///////////////////////////////////////////////////////////////////////////
 740
 741 ];