includes/MediaWikiServices.php

   1 <?php
   2 namespace MediaWiki;
   3
   4 use CommentStore;
   5 use Config;
   6 use ConfigFactory;
   7 use CryptHKDF;
   8 use CryptRand;
   9 use EventRelayerGroup;
  10 use GenderCache;
  11 use GlobalVarConfig;
  12 use Hooks;
  13 use IBufferingStatsdDataFactory;
  14 use MediaWiki\Http\HttpRequestFactory;
  15 use MediaWiki\Preferences\PreferencesFactory;
  16 use MediaWiki\Shell\CommandFactory;
  17 use MediaWiki\Storage\BlobStore;
  18 use MediaWiki\Storage\BlobStoreFactory;
  19 use MediaWiki\Storage\NameTableStore;
  20 use MediaWiki\Storage\RevisionFactory;
  21 use MediaWiki\Storage\RevisionLookup;
  22 use MediaWiki\Storage\RevisionStore;
  23 use Wikimedia\Rdbms\LBFactory;
  24 use LinkCache;
  25 use Wikimedia\Rdbms\LoadBalancer;
  26 use MediaHandlerFactory;
  27 use MediaWiki\Linker\LinkRenderer;
  28 use MediaWiki\Linker\LinkRendererFactory;
  29 use MediaWiki\Services\SalvageableService;
  30 use MediaWiki\Services\ServiceContainer;
  31 use MediaWiki\Services\NoSuchServiceException;
  32 use MWException;
  33 use MimeAnalyzer;
  34 use ObjectCache;
  35 use Parser;
  36 use ParserCache;
  37 use ProxyLookup;
  38 use SearchEngine;
  39 use SearchEngineConfig;
  40 use SearchEngineFactory;
  41 use SiteLookup;
  42 use SiteStore;
  43 use WatchedItemStoreInterface;
  44 use WatchedItemQueryService;
  45 use SkinFactory;
  46 use TitleFormatter;
  47 use TitleParser;
  48 use VirtualRESTServiceClient;
  49 use MediaWiki\Interwiki\InterwikiLookup;
  50
  51 /**
  52  * Service locator for MediaWiki core services.
  53  *
  54  * This program is free software; you can redistribute it and/or modify
  55  * it under the terms of the GNU General Public License as published by
  56  * the Free Software Foundation; either version 2 of the License, or
  57  * (at your option) any later version.
  58  *
  59  * This program is distributed in the hope that it will be useful,
  60  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  61  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  62  * GNU General Public License for more details.
  63  *
  64  * You should have received a copy of the GNU General Public License along
  65  * with this program; if not, write to the Free Software Foundation, Inc.,
  66  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  67  * http://www.gnu.org/copyleft/gpl.html
  68  *
  69  * @file
  70  *
  71  * @since 1.27
  72  */
  73
  74 /**
  75  * MediaWikiServices is the service locator for the application scope of MediaWiki.
  76  * Its implemented as a simple configurable DI container.
  77  * MediaWikiServices acts as a top level factory/registry for top level services, and builds
  78  * the network of service objects that defines MediaWiki's application logic.
  79  * It acts as an entry point to MediaWiki's dependency injection mechanism.
  80  *
  81  * Services are defined in the "wiring" array passed to the constructor,
  82  * or by calling defineService().
  83  *
  84  * @see docs/injection.txt for an overview of using dependency injection in the
  85  *      MediaWiki code base.
  86  */
  87 class MediaWikiServices extends ServiceContainer {
  88
  89         /**
  90          * @var MediaWikiServices|null
  91          */
  92         private static $instance = null;
  93
  94         /**
  95          * Returns the global default instance of the top level service locator.
  96          *
  97          * @since 1.27
  98          *
  99          * The default instance is initialized using the service instantiator functions
 100          * defined in ServiceWiring.php.
 101          *
 102          * @note This should only be called by static functions! The instance returned here
 103          * should not be passed around! Objects that need access to a service should have
 104          * that service injected into the constructor, never a service locator!
 105          *
 106          * @return MediaWikiServices
 107          */
 108         public static function getInstance() {
 109                 if ( self::$instance === null ) {
 110                         // NOTE: constructing GlobalVarConfig here is not particularly pretty,
 111                         // but some information from the global scope has to be injected here,
 112                         // even if it's just a file name or database credentials to load
 113                         // configuration from.
 114                         $bootstrapConfig = new GlobalVarConfig();
 115                         self::$instance = self::newInstance( $bootstrapConfig, 'load' );
 116                 }
 117
 118                 return self::$instance;
 119         }
 120
 121         /**
 122          * Replaces the global MediaWikiServices instance.
 123          *
 124          * @since 1.28
 125          *
 126          * @note This is for use in PHPUnit tests only!
 127          *
 128          * @throws MWException if called outside of PHPUnit tests.
 129          *
 130          * @param MediaWikiServices $services The new MediaWikiServices object.
 131          *
 132          * @return MediaWikiServices The old MediaWikiServices object, so it can be restored later.
 133          */
 134         public static function forceGlobalInstance( MediaWikiServices $services ) {
 135                 if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
 136                         throw new MWException( __METHOD__ . ' must not be used outside unit tests.' );
 137                 }
 138
 139                 $old = self::getInstance();
 140                 self::$instance = $services;
 141
 142                 return $old;
 143         }
 144
 145         /**
 146          * Creates a new instance of MediaWikiServices and sets it as the global default
 147          * instance. getInstance() will return a different MediaWikiServices object
 148          * after every call to resetGlobalInstance().
 149          *
 150          * @since 1.28
 151          *
 152          * @warning This should not be used during normal operation. It is intended for use
 153          * when the configuration has changed significantly since bootstrap time, e.g.
 154          * during the installation process or during testing.
 155          *
 156          * @warning Calling resetGlobalInstance() may leave the application in an inconsistent
 157          * state. Calling this is only safe under the ASSUMPTION that NO REFERENCE to
 158          * any of the services managed by MediaWikiServices exist. If any service objects
 159          * managed by the old MediaWikiServices instance remain in use, they may INTERFERE
 160          * with the operation of the services managed by the new MediaWikiServices.
 161          * Operating with a mix of services created by the old and the new
 162          * MediaWikiServices instance may lead to INCONSISTENCIES and even DATA LOSS!
 163          * Any class implementing LAZY LOADING is especially prone to this problem,
 164          * since instances would typically retain a reference to a storage layer service.
 165          *
 166          * @see forceGlobalInstance()
 167          * @see resetGlobalInstance()
 168          * @see resetBetweenTest()
 169          *
 170          * @param Config|null $bootstrapConfig The Config object to be registered as the
 171          *        'BootstrapConfig' service. This has to contain at least the information
 172          *        needed to set up the 'ConfigFactory' service. If not given, the bootstrap
 173          *        config of the old instance of MediaWikiServices will be re-used. If there
 174          *        was no previous instance, a new GlobalVarConfig object will be used to
 175          *        bootstrap the services.
 176          *
 177          * @param string $quick Set this to "quick" to allow expensive resources to be re-used.
 178          * See SalvageableService for details.
 179          *
 180          * @throws MWException If called after MW_SERVICE_BOOTSTRAP_COMPLETE has been defined in
 181          *         Setup.php (unless MW_PHPUNIT_TEST or MEDIAWIKI_INSTALL or RUN_MAINTENANCE_IF_MAIN
 182          *          is defined).
 183          */
 184         public static function resetGlobalInstance( Config $bootstrapConfig = null, $quick = '' ) {
 185                 if ( self::$instance === null ) {
 186                         // no global instance yet, nothing to reset
 187                         return;
 188                 }
 189
 190                 self::failIfResetNotAllowed( __METHOD__ );
 191
 192                 if ( $bootstrapConfig === null ) {
 193                         $bootstrapConfig = self::$instance->getBootstrapConfig();
 194                 }
 195
 196                 $oldInstance = self::$instance;
 197
 198                 self::$instance = self::newInstance( $bootstrapConfig, 'load' );
 199                 self::$instance->importWiring( $oldInstance, [ 'BootstrapConfig' ] );
 200
 201                 if ( $quick === 'quick' ) {
 202                         self::$instance->salvage( $oldInstance );
 203                 } else {
 204                         $oldInstance->destroy();
 205                 }
 206         }
 207
 208         /**
 209          * Salvages the state of any salvageable service instances in $other.
 210          *
 211          * @note $other will have been destroyed when salvage() returns.
 212          *
 213          * @param MediaWikiServices $other
 214          */
 215         private function salvage( self $other ) {
 216                 foreach ( $this->getServiceNames() as $name ) {
 217                         // The service could be new in the new instance and not registered in the
 218                         // other instance (e.g. an extension that was loaded after the instantiation of
 219                         // the other instance. Skip this service in this case. See T143974
 220                         try {
 221                                 $oldService = $other->peekService( $name );
 222                         } catch ( NoSuchServiceException $e ) {
 223                                 continue;
 224                         }
 225
 226                         if ( $oldService instanceof SalvageableService ) {
 227                                 /** @var SalvageableService $newService */
 228                                 $newService = $this->getService( $name );
 229                                 $newService->salvage( $oldService );
 230                         }
 231                 }
 232
 233                 $other->destroy();
 234         }
 235
 236         /**
 237          * Creates a new MediaWikiServices instance and initializes it according to the
 238          * given $bootstrapConfig. In particular, all wiring files defined in the
 239          * ServiceWiringFiles setting are loaded, and the MediaWikiServices hook is called.
 240          *
 241          * @param Config|null $bootstrapConfig The Config object to be registered as the
 242          *        'BootstrapConfig' service.
 243          *
 244          * @param string $loadWiring set this to 'load' to load the wiring files specified
 245          *        in the 'ServiceWiringFiles' setting in $bootstrapConfig.
 246          *
 247          * @return MediaWikiServices
 248          * @throws MWException
 249          * @throws \FatalError
 250          */
 251         private static function newInstance( Config $bootstrapConfig, $loadWiring = '' ) {
 252                 $instance = new self( $bootstrapConfig );
 253
 254                 // Load the default wiring from the specified files.
 255                 if ( $loadWiring === 'load' ) {
 256                         $wiringFiles = $bootstrapConfig->get( 'ServiceWiringFiles' );
 257                         $instance->loadWiringFiles( $wiringFiles );
 258                 }
 259
 260                 // Provide a traditional hook point to allow extensions to configure services.
 261                 Hooks::run( 'MediaWikiServices', [ $instance ] );
 262
 263                 return $instance;
 264         }
 265
 266         /**
 267          * Disables all storage layer services. After calling this, any attempt to access the
 268          * storage layer will result in an error. Use resetGlobalInstance() to restore normal
 269          * operation.
 270          *
 271          * @since 1.28
 272          *
 273          * @warning This is intended for extreme situations only and should never be used
 274          * while serving normal web requests. Legitimate use cases for this method include
 275          * the installation process. Test fixtures may also use this, if the fixture relies
 276          * on globalState.
 277          *
 278          * @see resetGlobalInstance()
 279          * @see resetChildProcessServices()
 280          */
 281         public static function disableStorageBackend() {
 282                 // TODO: also disable some Caches, JobQueues, etc
 283                 $destroy = [ 'DBLoadBalancer', 'DBLoadBalancerFactory' ];
 284                 $services = self::getInstance();
 285
 286                 foreach ( $destroy as $name ) {
 287                         $services->disableService( $name );
 288                 }
 289
 290                 ObjectCache::clear();
 291         }
 292
 293         /**
 294          * Resets any services that may have become stale after a child process
 295          * returns from after pcntl_fork(). It's also safe, but generally unnecessary,
 296          * to call this method from the parent process.
 297          *
 298          * @since 1.28
 299          *
 300          * @note This is intended for use in the context of process forking only!
 301          *
 302          * @see resetGlobalInstance()
 303          * @see disableStorageBackend()
 304          */
 305         public static function resetChildProcessServices() {
 306                 // NOTE: for now, just reset everything. Since we don't know the interdependencies
 307                 // between services, we can't do this more selectively at this time.
 308                 self::resetGlobalInstance();
 309
 310                 // Child, reseed because there is no bug in PHP:
 311                 // https://bugs.php.net/bug.php?id=42465
 312                 mt_srand( getmypid() );
 313         }
 314
 315         /**
 316          * Resets the given service for testing purposes.
 317          *
 318          * @since 1.28
 319          *
 320          * @warning This is generally unsafe! Other services may still retain references
 321          * to the stale service instance, leading to failures and inconsistencies. Subclasses
 322          * may use this method to reset specific services under specific instances, but
 323          * it should not be exposed to application logic.
 324          *
 325          * @note With proper dependency injection used throughout the codebase, this method
 326          * should not be needed. It is provided to allow tests that pollute global service
 327          * instances to clean up.
 328          *
 329          * @param string $name
 330          * @param bool $destroy Whether the service instance should be destroyed if it exists.
 331          *        When set to false, any existing service instance will effectively be detached
 332          *        from the container.
 333          *
 334          * @throws MWException if called outside of PHPUnit tests.
 335          */
 336         public function resetServiceForTesting( $name, $destroy = true ) {
 337                 if ( !defined( 'MW_PHPUNIT_TEST' ) && !defined( 'MW_PARSER_TEST' ) ) {
 338                         throw new MWException( 'resetServiceForTesting() must not be used outside unit tests.' );
 339                 }
 340
 341                 $this->resetService( $name, $destroy );
 342         }
 343
 344         /**
 345          * Convenience method that throws an exception unless it is called during a phase in which
 346          * resetting of global services is allowed. In general, services should not be reset
 347          * individually, since that may introduce inconsistencies.
 348          *
 349          * @since 1.28
 350          *
 351          * This method will throw an exception if:
 352          *
 353          * - self::$resetInProgress is false (to allow all services to be reset together
 354          *   via resetGlobalInstance)
 355          * - and MEDIAWIKI_INSTALL is not defined (to allow services to be reset during installation)
 356          * - and MW_PHPUNIT_TEST is not defined (to allow services to be reset during testing)
 357          *
 358          * This method is intended to be used to safeguard against accidentally resetting
 359          * global service instances that are not yet managed by MediaWikiServices. It is
 360          * defined here in the MediaWikiServices services class to have a central place
 361          * for managing service bootstrapping and resetting.
 362          *
 363          * @param string $method the name of the caller method, as given by __METHOD__.
 364          *
 365          * @throws MWException if called outside bootstrap mode.
 366          *
 367          * @see resetGlobalInstance()
 368          * @see forceGlobalInstance()
 369          * @see disableStorageBackend()
 370          */
 371         public static function failIfResetNotAllowed( $method ) {
 372                 if ( !defined( 'MW_PHPUNIT_TEST' )
 373                         && !defined( 'MW_PARSER_TEST' )
 374                         && !defined( 'MEDIAWIKI_INSTALL' )
 375                         && !defined( 'RUN_MAINTENANCE_IF_MAIN' )
 376                         && defined( 'MW_SERVICE_BOOTSTRAP_COMPLETE' )
 377                 ) {
 378                         throw new MWException( $method . ' may only be called during bootstrapping and unit tests!' );
 379                 }
 380         }
 381
 382         /**
 383          * @param Config $config The Config object to be registered as the 'BootstrapConfig' service.
 384          *        This has to contain at least the information needed to set up the 'ConfigFactory'
 385          *        service.
 386          */
 387         public function __construct( Config $config ) {
 388                 parent::__construct();
 389
 390                 // Register the given Config object as the bootstrap config service.
 391                 $this->defineService( 'BootstrapConfig', function () use ( $config ) {
 392                         return $config;
 393                 } );
 394         }
 395
 396         // CONVENIENCE GETTERS ////////////////////////////////////////////////////
 397
 398         /**
 399          * Returns the Config object containing the bootstrap configuration.
 400          * Bootstrap configuration would typically include database credentials
 401          * and other information that may be needed before the ConfigFactory
 402          * service can be instantiated.
 403          *
 404          * @note This should only be used during bootstrapping, in particular
 405          * when creating the MainConfig service. Application logic should
 406          * use getMainConfig() to get a Config instances.
 407          *
 408          * @since 1.27
 409          * @return Config
 410          */
 411         public function getBootstrapConfig() {
 412                 return $this->getService( 'BootstrapConfig' );
 413         }
 414
 415         /**
 416          * @since 1.27
 417          * @return ConfigFactory
 418          */
 419         public function getConfigFactory() {
 420                 return $this->getService( 'ConfigFactory' );
 421         }
 422
 423         /**
 424          * Returns the Config object that provides configuration for MediaWiki core.
 425          * This may or may not be the same object that is returned by getBootstrapConfig().
 426          *
 427          * @since 1.27
 428          * @return Config
 429          */
 430         public function getMainConfig() {
 431                 return $this->getService( 'MainConfig' );
 432         }
 433
 434         /**
 435          * @since 1.27
 436          * @return SiteLookup
 437          */
 438         public function getSiteLookup() {
 439                 return $this->getService( 'SiteLookup' );
 440         }
 441
 442         /**
 443          * @since 1.27
 444          * @return SiteStore
 445          */
 446         public function getSiteStore() {
 447                 return $this->getService( 'SiteStore' );
 448         }
 449
 450         /**
 451          * @since 1.28
 452          * @return InterwikiLookup
 453          */
 454         public function getInterwikiLookup() {
 455                 return $this->getService( 'InterwikiLookup' );
 456         }
 457
 458         /**
 459          * @since 1.27
 460          * @return IBufferingStatsdDataFactory
 461          */
 462         public function getStatsdDataFactory() {
 463                 return $this->getService( 'StatsdDataFactory' );
 464         }
 465
 466         /**
 467          * @since 1.27
 468          * @return EventRelayerGroup
 469          */
 470         public function getEventRelayerGroup() {
 471                 return $this->getService( 'EventRelayerGroup' );
 472         }
 473
 474         /**
 475          * @since 1.27
 476          * @return SearchEngine
 477          */
 478         public function newSearchEngine() {
 479                 // New engine object every time, since they keep state
 480                 return $this->getService( 'SearchEngineFactory' )->create();
 481         }
 482
 483         /**
 484          * @since 1.27
 485          * @return SearchEngineFactory
 486          */
 487         public function getSearchEngineFactory() {
 488                 return $this->getService( 'SearchEngineFactory' );
 489         }
 490
 491         /**
 492          * @since 1.27
 493          * @return SearchEngineConfig
 494          */
 495         public function getSearchEngineConfig() {
 496                 return $this->getService( 'SearchEngineConfig' );
 497         }
 498
 499         /**
 500          * @since 1.27
 501          * @return SkinFactory
 502          */
 503         public function getSkinFactory() {
 504                 return $this->getService( 'SkinFactory' );
 505         }
 506
 507         /**
 508          * @since 1.28
 509          * @return LBFactory
 510          */
 511         public function getDBLoadBalancerFactory() {
 512                 return $this->getService( 'DBLoadBalancerFactory' );
 513         }
 514
 515         /**
 516          * @since 1.28
 517          * @return LoadBalancer The main DB load balancer for the local wiki.
 518          */
 519         public function getDBLoadBalancer() {
 520                 return $this->getService( 'DBLoadBalancer' );
 521         }
 522
 523         /**
 524          * @since 1.28
 525          * @return WatchedItemStoreInterface
 526          */
 527         public function getWatchedItemStore() {
 528                 return $this->getService( 'WatchedItemStore' );
 529         }
 530
 531         /**
 532          * @since 1.28
 533          * @return WatchedItemQueryService
 534          */
 535         public function getWatchedItemQueryService() {
 536                 return $this->getService( 'WatchedItemQueryService' );
 537         }
 538
 539         /**
 540          * @since 1.28
 541          * @return CryptRand
 542          */
 543         public function getCryptRand() {
 544                 return $this->getService( 'CryptRand' );
 545         }
 546
 547         /**
 548          * @since 1.28
 549          * @return CryptHKDF
 550          */
 551         public function getCryptHKDF() {
 552                 return $this->getService( 'CryptHKDF' );
 553         }
 554
 555         /**
 556          * @since 1.28
 557          * @return MediaHandlerFactory
 558          */
 559         public function getMediaHandlerFactory() {
 560                 return $this->getService( 'MediaHandlerFactory' );
 561         }
 562
 563         /**
 564          * @since 1.28
 565          * @return MimeAnalyzer
 566          */
 567         public function getMimeAnalyzer() {
 568                 return $this->getService( 'MimeAnalyzer' );
 569         }
 570
 571         /**
 572          * @since 1.28
 573          * @return ProxyLookup
 574          */
 575         public function getProxyLookup() {
 576                 return $this->getService( 'ProxyLookup' );
 577         }
 578
 579         /**
 580          * @since 1.29
 581          * @return Parser
 582          */
 583         public function getParser() {
 584                 return $this->getService( 'Parser' );
 585         }
 586
 587         /**
 588          * @since 1.30
 589          * @return ParserCache
 590          */
 591         public function getParserCache() {
 592                 return $this->getService( 'ParserCache' );
 593         }
 594
 595         /**
 596          * @since 1.28
 597          * @return GenderCache
 598          */
 599         public function getGenderCache() {
 600                 return $this->getService( 'GenderCache' );
 601         }
 602
 603         /**
 604          * @since 1.28
 605          * @return LinkCache
 606          */
 607         public function getLinkCache() {
 608                 return $this->getService( 'LinkCache' );
 609         }
 610
 611         /**
 612          * @since 1.28
 613          * @return LinkRendererFactory
 614          */
 615         public function getLinkRendererFactory() {
 616                 return $this->getService( 'LinkRendererFactory' );
 617         }
 618
 619         /**
 620          * LinkRenderer instance that can be used
 621          * if no custom options are needed
 622          *
 623          * @since 1.28
 624          * @return LinkRenderer
 625          */
 626         public function getLinkRenderer() {
 627                 return $this->getService( 'LinkRenderer' );
 628         }
 629
 630         /**
 631          * @since 1.28
 632          * @return TitleFormatter
 633          */
 634         public function getTitleFormatter() {
 635                 return $this->getService( 'TitleFormatter' );
 636         }
 637
 638         /**
 639          * @since 1.28
 640          * @return TitleParser
 641          */
 642         public function getTitleParser() {
 643                 return $this->getService( 'TitleParser' );
 644         }
 645
 646         /**
 647          * @since 1.28
 648          * @return \BagOStuff
 649          */
 650         public function getMainObjectStash() {
 651                 return $this->getService( 'MainObjectStash' );
 652         }
 653
 654         /**
 655          * @since 1.28
 656          * @return \WANObjectCache
 657          */
 658         public function getMainWANObjectCache() {
 659                 return $this->getService( 'MainWANObjectCache' );
 660         }
 661
 662         /**
 663          * @since 1.28
 664          * @return \BagOStuff
 665          */
 666         public function getLocalServerObjectCache() {
 667                 return $this->getService( 'LocalServerObjectCache' );
 668         }
 669
 670         /**
 671          * @since 1.28
 672          * @return VirtualRESTServiceClient
 673          */
 674         public function getVirtualRESTServiceClient() {
 675                 return $this->getService( 'VirtualRESTServiceClient' );
 676         }
 677
 678         /**
 679          * @since 1.29
 680          * @return \ConfiguredReadOnlyMode
 681          */
 682         public function getConfiguredReadOnlyMode() {
 683                 return $this->getService( 'ConfiguredReadOnlyMode' );
 684         }
 685
 686         /**
 687          * @since 1.29
 688          * @return \ReadOnlyMode
 689          */
 690         public function getReadOnlyMode() {
 691                 return $this->getService( 'ReadOnlyMode' );
 692         }
 693
 694         /**
 695          * @since 1.31
 696          * @return \UploadRevisionImporter
 697          */
 698         public function getWikiRevisionUploadImporter() {
 699                 return $this->getService( 'UploadRevisionImporter' );
 700         }
 701
 702         /**
 703          * @since 1.31
 704          * @return \OldRevisionImporter
 705          */
 706         public function getWikiRevisionOldRevisionImporter() {
 707                 return $this->getService( 'OldRevisionImporter' );
 708         }
 709
 710         /**
 711          * @since 1.31
 712          * @return \OldRevisionImporter
 713          */
 714         public function getWikiRevisionOldRevisionImporterNoUpdates() {
 715                 return $this->getService( 'WikiRevisionOldRevisionImporterNoUpdates' );
 716         }
 717
 718         /**
 719          * @since 1.30
 720          * @return CommandFactory
 721          */
 722         public function getShellCommandFactory() {
 723                 return $this->getService( 'ShellCommandFactory' );
 724         }
 725
 726         /**
 727          * @since 1.31
 728          * @return \ExternalStoreFactory
 729          */
 730         public function getExternalStoreFactory() {
 731                 return $this->getService( 'ExternalStoreFactory' );
 732         }
 733
 734         /**
 735          * @since 1.31
 736          * @return BlobStoreFactory
 737          */
 738         public function getBlobStoreFactory() {
 739                 return $this->getService( 'BlobStoreFactory' );
 740         }
 741
 742         /**
 743          * @since 1.31
 744          * @return BlobStore
 745          */
 746         public function getBlobStore() {
 747                 return $this->getService( '_SqlBlobStore' );
 748         }
 749
 750         /**
 751          * @since 1.31
 752          * @return RevisionStore
 753          */
 754         public function getRevisionStore() {
 755                 return $this->getService( 'RevisionStore' );
 756         }
 757
 758         /**
 759          * @since 1.31
 760          * @return RevisionLookup
 761          */
 762         public function getRevisionLookup() {
 763                 return $this->getService( 'RevisionLookup' );
 764         }
 765
 766         /**
 767          * @since 1.31
 768          * @return RevisionFactory
 769          */
 770         public function getRevisionFactory() {
 771                 return $this->getService( 'RevisionFactory' );
 772         }
 773
 774         /**
 775          * @since 1.31
 776          * @return NameTableStore
 777          */
 778         public function getContentModelStore() {
 779                 return $this->getService( 'ContentModelStore' );
 780         }
 781
 782         /**
 783          * @since 1.31
 784          * @return NameTableStore
 785          */
 786         public function getSlotRoleStore() {
 787                 return $this->getService( 'SlotRoleStore' );
 788         }
 789
 790         /**
 791          * @since 1.31
 792          * @return PreferencesFactory
 793          */
 794         public function getPreferencesFactory() {
 795                 return $this->getService( 'PreferencesFactory' );
 796         }
 797
 798         /**
 799          * @since 1.31
 800          * @return HttpRequestFactory
 801          */
 802         public function getHttpRequestFactory() {
 803                 return $this->getService( 'HttpRequestFactory' );
 804         }
 805
 806         /**
 807          * @since 1.31
 808          * @return CommentStore
 809          */
 810         public function getCommentStore() {
 811                 return $this->getService( 'CommentStore' );
 812         }
 813
 814         /**
 815          * @since 1.31
 816          * @return ActorMigration
 817          */
 818         public function getActorMigration() {
 819                 return $this->getService( 'ActorMigration' );
 820         }
 821
 822         ///////////////////////////////////////////////////////////////////////////
 823         // NOTE: When adding a service getter here, don't forget to add a test
 824         // case for it in MediaWikiServicesTest::provideGetters() and in
 825         // MediaWikiServicesTest::provideGetService()!
 826         ///////////////////////////////////////////////////////////////////////////
 827
 828 }