includes/MediaWikiServices.php

   1 <?php
   2 namespace MediaWiki;
   3
   4 use ActorMigration;
   5 use CommentStore;
   6 use Config;
   7 use ConfigFactory;
   8 use CryptHKDF;
   9 use CryptRand;
  10 use EventRelayerGroup;
  11 use GenderCache;
  12 use GlobalVarConfig;
  13 use Hooks;
  14 use IBufferingStatsdDataFactory;
  15 use Liuggio\StatsdClient\Factory\StatsdDataFactoryInterface;
  16 use MediaWiki\Http\HttpRequestFactory;
  17 use MediaWiki\Preferences\PreferencesFactory;
  18 use MediaWiki\Shell\CommandFactory;
  19 use MediaWiki\Revision\RevisionRenderer;
  20 use MediaWiki\Special\SpecialPageFactory;
  21 use MediaWiki\Storage\BlobStore;
  22 use MediaWiki\Storage\BlobStoreFactory;
  23 use MediaWiki\Storage\NameTableStore;
  24 use MediaWiki\Storage\NameTableStoreFactory;
  25 use MediaWiki\Storage\RevisionFactory;
  26 use MediaWiki\Storage\RevisionLookup;
  27 use MediaWiki\Storage\RevisionStore;
  28 use OldRevisionImporter;
  29 use MediaWiki\Storage\RevisionStoreFactory;
  30 use UploadRevisionImporter;
  31 use Wikimedia\Rdbms\LBFactory;
  32 use LinkCache;
  33 use Wikimedia\Rdbms\LoadBalancer;
  34 use MediaHandlerFactory;
  35 use MediaWiki\Config\ConfigRepository;
  36 use MediaWiki\Linker\LinkRenderer;
  37 use MediaWiki\Linker\LinkRendererFactory;
  38 use MediaWiki\Services\SalvageableService;
  39 use MediaWiki\Services\ServiceContainer;
  40 use MediaWiki\Services\NoSuchServiceException;
  41 use MWException;
  42 use MimeAnalyzer;
  43 use ObjectCache;
  44 use Parser;
  45 use ParserCache;
  46 use ParserFactory;
  47 use PasswordFactory;
  48 use ProxyLookup;
  49 use SearchEngine;
  50 use SearchEngineConfig;
  51 use SearchEngineFactory;
  52 use SiteLookup;
  53 use SiteStore;
  54 use WatchedItemStoreInterface;
  55 use WatchedItemQueryService;
  56 use SkinFactory;
  57 use TitleFormatter;
  58 use TitleParser;
  59 use VirtualRESTServiceClient;
  60 use MediaWiki\Interwiki\InterwikiLookup;
  61 use MagicWordFactory;
  62
  63 /**
  64  * Service locator for MediaWiki core services.
  65  *
  66  * This program is free software; you can redistribute it and/or modify
  67  * it under the terms of the GNU General Public License as published by
  68  * the Free Software Foundation; either version 2 of the License, or
  69  * (at your option) any later version.
  70  *
  71  * This program is distributed in the hope that it will be useful,
  72  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  73  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  74  * GNU General Public License for more details.
  75  *
  76  * You should have received a copy of the GNU General Public License along
  77  * with this program; if not, write to the Free Software Foundation, Inc.,
  78  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  79  * http://www.gnu.org/copyleft/gpl.html
  80  *
  81  * @file
  82  *
  83  * @since 1.27
  84  */
  85
  86 /**
  87  * MediaWikiServices is the service locator for the application scope of MediaWiki.
  88  * Its implemented as a simple configurable DI container.
  89  * MediaWikiServices acts as a top level factory/registry for top level services, and builds
  90  * the network of service objects that defines MediaWiki's application logic.
  91  * It acts as an entry point to MediaWiki's dependency injection mechanism.
  92  *
  93  * Services are defined in the "wiring" array passed to the constructor,
  94  * or by calling defineService().
  95  *
  96  * @see docs/injection.txt for an overview of using dependency injection in the
  97  *      MediaWiki code base.
  98  */
  99 class MediaWikiServices extends ServiceContainer {
 100
 101         /**
 102          * @var MediaWikiServices|null
 103          */
 104         private static $instance = null;
 105
 106         /**
 107          * Returns the global default instance of the top level service locator.
 108          *
 109          * @since 1.27
 110          *
 111          * The default instance is initialized using the service instantiator functions
 112          * defined in ServiceWiring.php.
 113          *
 114          * @note This should only be called by static functions! The instance returned here
 115          * should not be passed around! Objects that need access to a service should have
 116          * that service injected into the constructor, never a service locator!
 117          *
 118          * @return MediaWikiServices
 119          */
 120         public static function getInstance() {
 121                 if ( self::$instance === null ) {
 122                         // NOTE: constructing GlobalVarConfig here is not particularly pretty,
 123                         // but some information from the global scope has to be injected here,
 124                         // even if it's just a file name or database credentials to load
 125                         // configuration from.
 126                         $bootstrapConfig = new GlobalVarConfig();
 127                         self::$instance = self::newInstance( $bootstrapConfig, 'load' );
 128                 }
 129
 130                 return self::$instance;
 131         }
 132
 133         /**
 134          * Replaces the global MediaWikiServices instance.
 135          *
 136          * @since 1.28
 137          *
 138          * @note This is for use in PHPUnit tests only!
 139          *
 140          * @throws MWException if called outside of PHPUnit tests.
 141          *
 142          * @param MediaWikiServices $services The new MediaWikiServices object.
 143          *
 144          * @return MediaWikiServices The old MediaWikiServices object, so it can be restored later.
 145          */
 146         public static function forceGlobalInstance( MediaWikiServices $services ) {
 147                 if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
 148                         throw new MWException( __METHOD__ . ' must not be used outside unit tests.' );
 149                 }
 150
 151                 $old = self::getInstance();
 152                 self::$instance = $services;
 153
 154                 return $old;
 155         }
 156
 157         /**
 158          * Creates a new instance of MediaWikiServices and sets it as the global default
 159          * instance. getInstance() will return a different MediaWikiServices object
 160          * after every call to resetGlobalInstance().
 161          *
 162          * @since 1.28
 163          *
 164          * @warning This should not be used during normal operation. It is intended for use
 165          * when the configuration has changed significantly since bootstrap time, e.g.
 166          * during the installation process or during testing.
 167          *
 168          * @warning Calling resetGlobalInstance() may leave the application in an inconsistent
 169          * state. Calling this is only safe under the ASSUMPTION that NO REFERENCE to
 170          * any of the services managed by MediaWikiServices exist. If any service objects
 171          * managed by the old MediaWikiServices instance remain in use, they may INTERFERE
 172          * with the operation of the services managed by the new MediaWikiServices.
 173          * Operating with a mix of services created by the old and the new
 174          * MediaWikiServices instance may lead to INCONSISTENCIES and even DATA LOSS!
 175          * Any class implementing LAZY LOADING is especially prone to this problem,
 176          * since instances would typically retain a reference to a storage layer service.
 177          *
 178          * @see forceGlobalInstance()
 179          * @see resetGlobalInstance()
 180          * @see resetBetweenTest()
 181          *
 182          * @param Config|null $bootstrapConfig The Config object to be registered as the
 183          *        'BootstrapConfig' service. This has to contain at least the information
 184          *        needed to set up the 'ConfigFactory' service. If not given, the bootstrap
 185          *        config of the old instance of MediaWikiServices will be re-used. If there
 186          *        was no previous instance, a new GlobalVarConfig object will be used to
 187          *        bootstrap the services.
 188          *
 189          * @param string $quick Set this to "quick" to allow expensive resources to be re-used.
 190          * See SalvageableService for details.
 191          *
 192          * @throws MWException If called after MW_SERVICE_BOOTSTRAP_COMPLETE has been defined in
 193          *         Setup.php (unless MW_PHPUNIT_TEST or MEDIAWIKI_INSTALL or RUN_MAINTENANCE_IF_MAIN
 194          *          is defined).
 195          */
 196         public static function resetGlobalInstance( Config $bootstrapConfig = null, $quick = '' ) {
 197                 if ( self::$instance === null ) {
 198                         // no global instance yet, nothing to reset
 199                         return;
 200                 }
 201
 202                 self::failIfResetNotAllowed( __METHOD__ );
 203
 204                 if ( $bootstrapConfig === null ) {
 205                         $bootstrapConfig = self::$instance->getBootstrapConfig();
 206                 }
 207
 208                 $oldInstance = self::$instance;
 209
 210                 self::$instance = self::newInstance( $bootstrapConfig, 'load' );
 211                 self::$instance->importWiring( $oldInstance, [ 'BootstrapConfig' ] );
 212
 213                 if ( $quick === 'quick' ) {
 214                         self::$instance->salvage( $oldInstance );
 215                 } else {
 216                         $oldInstance->destroy();
 217                 }
 218         }
 219
 220         /**
 221          * Salvages the state of any salvageable service instances in $other.
 222          *
 223          * @note $other will have been destroyed when salvage() returns.
 224          *
 225          * @param MediaWikiServices $other
 226          */
 227         private function salvage( self $other ) {
 228                 foreach ( $this->getServiceNames() as $name ) {
 229                         // The service could be new in the new instance and not registered in the
 230                         // other instance (e.g. an extension that was loaded after the instantiation of
 231                         // the other instance. Skip this service in this case. See T143974
 232                         try {
 233                                 $oldService = $other->peekService( $name );
 234                         } catch ( NoSuchServiceException $e ) {
 235                                 continue;
 236                         }
 237
 238                         if ( $oldService instanceof SalvageableService ) {
 239                                 /** @var SalvageableService $newService */
 240                                 $newService = $this->getService( $name );
 241                                 $newService->salvage( $oldService );
 242                         }
 243                 }
 244
 245                 $other->destroy();
 246         }
 247
 248         /**
 249          * Creates a new MediaWikiServices instance and initializes it according to the
 250          * given $bootstrapConfig. In particular, all wiring files defined in the
 251          * ServiceWiringFiles setting are loaded, and the MediaWikiServices hook is called.
 252          *
 253          * @param Config|null $bootstrapConfig The Config object to be registered as the
 254          *        'BootstrapConfig' service.
 255          *
 256          * @param string $loadWiring set this to 'load' to load the wiring files specified
 257          *        in the 'ServiceWiringFiles' setting in $bootstrapConfig.
 258          *
 259          * @return MediaWikiServices
 260          * @throws MWException
 261          * @throws \FatalError
 262          */
 263         private static function newInstance( Config $bootstrapConfig, $loadWiring = '' ) {
 264                 $instance = new self( $bootstrapConfig );
 265
 266                 // Load the default wiring from the specified files.
 267                 if ( $loadWiring === 'load' ) {
 268                         $wiringFiles = $bootstrapConfig->get( 'ServiceWiringFiles' );
 269                         $instance->loadWiringFiles( $wiringFiles );
 270                 }
 271
 272                 // Provide a traditional hook point to allow extensions to configure services.
 273                 Hooks::run( 'MediaWikiServices', [ $instance ] );
 274
 275                 return $instance;
 276         }
 277
 278         /**
 279          * Disables all storage layer services. After calling this, any attempt to access the
 280          * storage layer will result in an error. Use resetGlobalInstance() to restore normal
 281          * operation.
 282          *
 283          * @since 1.28
 284          *
 285          * @warning This is intended for extreme situations only and should never be used
 286          * while serving normal web requests. Legitimate use cases for this method include
 287          * the installation process. Test fixtures may also use this, if the fixture relies
 288          * on globalState.
 289          *
 290          * @see resetGlobalInstance()
 291          * @see resetChildProcessServices()
 292          */
 293         public static function disableStorageBackend() {
 294                 // TODO: also disable some Caches, JobQueues, etc
 295                 $destroy = [ 'DBLoadBalancer', 'DBLoadBalancerFactory' ];
 296                 $services = self::getInstance();
 297
 298                 foreach ( $destroy as $name ) {
 299                         $services->disableService( $name );
 300                 }
 301
 302                 ObjectCache::clear();
 303         }
 304
 305         /**
 306          * Resets any services that may have become stale after a child process
 307          * returns from after pcntl_fork(). It's also safe, but generally unnecessary,
 308          * to call this method from the parent process.
 309          *
 310          * @since 1.28
 311          *
 312          * @note This is intended for use in the context of process forking only!
 313          *
 314          * @see resetGlobalInstance()
 315          * @see disableStorageBackend()
 316          */
 317         public static function resetChildProcessServices() {
 318                 // NOTE: for now, just reset everything. Since we don't know the interdependencies
 319                 // between services, we can't do this more selectively at this time.
 320                 self::resetGlobalInstance();
 321
 322                 // Child, reseed because there is no bug in PHP:
 323                 // https://bugs.php.net/bug.php?id=42465
 324                 mt_srand( getmypid() );
 325         }
 326
 327         /**
 328          * Resets the given service for testing purposes.
 329          *
 330          * @since 1.28
 331          *
 332          * @warning This is generally unsafe! Other services may still retain references
 333          * to the stale service instance, leading to failures and inconsistencies. Subclasses
 334          * may use this method to reset specific services under specific instances, but
 335          * it should not be exposed to application logic.
 336          *
 337          * @note With proper dependency injection used throughout the codebase, this method
 338          * should not be needed. It is provided to allow tests that pollute global service
 339          * instances to clean up.
 340          *
 341          * @param string $name
 342          * @param bool $destroy Whether the service instance should be destroyed if it exists.
 343          *        When set to false, any existing service instance will effectively be detached
 344          *        from the container.
 345          *
 346          * @throws MWException if called outside of PHPUnit tests.
 347          */
 348         public function resetServiceForTesting( $name, $destroy = true ) {
 349                 if ( !defined( 'MW_PHPUNIT_TEST' ) && !defined( 'MW_PARSER_TEST' ) ) {
 350                         throw new MWException( 'resetServiceForTesting() must not be used outside unit tests.' );
 351                 }
 352
 353                 $this->resetService( $name, $destroy );
 354         }
 355
 356         /**
 357          * Convenience method that throws an exception unless it is called during a phase in which
 358          * resetting of global services is allowed. In general, services should not be reset
 359          * individually, since that may introduce inconsistencies.
 360          *
 361          * @since 1.28
 362          *
 363          * This method will throw an exception if:
 364          *
 365          * - self::$resetInProgress is false (to allow all services to be reset together
 366          *   via resetGlobalInstance)
 367          * - and MEDIAWIKI_INSTALL is not defined (to allow services to be reset during installation)
 368          * - and MW_PHPUNIT_TEST is not defined (to allow services to be reset during testing)
 369          *
 370          * This method is intended to be used to safeguard against accidentally resetting
 371          * global service instances that are not yet managed by MediaWikiServices. It is
 372          * defined here in the MediaWikiServices services class to have a central place
 373          * for managing service bootstrapping and resetting.
 374          *
 375          * @param string $method the name of the caller method, as given by __METHOD__.
 376          *
 377          * @throws MWException if called outside bootstrap mode.
 378          *
 379          * @see resetGlobalInstance()
 380          * @see forceGlobalInstance()
 381          * @see disableStorageBackend()
 382          */
 383         public static function failIfResetNotAllowed( $method ) {
 384                 if ( !defined( 'MW_PHPUNIT_TEST' )
 385                         && !defined( 'MW_PARSER_TEST' )
 386                         && !defined( 'MEDIAWIKI_INSTALL' )
 387                         && !defined( 'RUN_MAINTENANCE_IF_MAIN' )
 388                         && defined( 'MW_SERVICE_BOOTSTRAP_COMPLETE' )
 389                 ) {
 390                         throw new MWException( $method . ' may only be called during bootstrapping and unit tests!' );
 391                 }
 392         }
 393
 394         /**
 395          * @param Config $config The Config object to be registered as the 'BootstrapConfig' service.
 396          *        This has to contain at least the information needed to set up the 'ConfigFactory'
 397          *        service.
 398          */
 399         public function __construct( Config $config ) {
 400                 parent::__construct();
 401
 402                 // Register the given Config object as the bootstrap config service.
 403                 $this->defineService( 'BootstrapConfig', function () use ( $config ) {
 404                         return $config;
 405                 } );
 406         }
 407
 408         // CONVENIENCE GETTERS ////////////////////////////////////////////////////
 409
 410         /**
 411          * @since 1.31
 412          * @return ActorMigration
 413          */
 414         public function getActorMigration() {
 415                 return $this->getService( 'ActorMigration' );
 416         }
 417
 418         /**
 419          * @since 1.31
 420          * @return BlobStore
 421          */
 422         public function getBlobStore() {
 423                 return $this->getService( '_SqlBlobStore' );
 424         }
 425
 426         /**
 427          * @since 1.31
 428          * @return BlobStoreFactory
 429          */
 430         public function getBlobStoreFactory() {
 431                 return $this->getService( 'BlobStoreFactory' );
 432         }
 433
 434         /**
 435          * Returns the Config object containing the bootstrap configuration.
 436          * Bootstrap configuration would typically include database credentials
 437          * and other information that may be needed before the ConfigFactory
 438          * service can be instantiated.
 439          *
 440          * @note This should only be used during bootstrapping, in particular
 441          * when creating the MainConfig service. Application logic should
 442          * use getMainConfig() to get a Config instances.
 443          *
 444          * @since 1.27
 445          * @return Config
 446          */
 447         public function getBootstrapConfig() {
 448                 return $this->getService( 'BootstrapConfig' );
 449         }
 450
 451         /**
 452          * @since 1.32
 453          * @return NameTableStore
 454          */
 455         public function getChangeTagDefStore() {
 456                 return $this->getService( 'NameTableStoreFactory' )->getChangeTagDef();
 457         }
 458
 459         /**
 460          * @since 1.31
 461          * @return CommentStore
 462          */
 463         public function getCommentStore() {
 464                 return $this->getService( 'CommentStore' );
 465         }
 466
 467         /**
 468          * @since 1.27
 469          * @return ConfigFactory
 470          */
 471         public function getConfigFactory() {
 472                 return $this->getService( 'ConfigFactory' );
 473         }
 474
 475         /**
 476          * @since 1.32
 477          * @return ConfigRepository
 478          */
 479         public function getConfigRepository() {
 480                 return $this->getService( 'ConfigRepository' );
 481         }
 482
 483         /**
 484          * @since 1.29
 485          * @return \ConfiguredReadOnlyMode
 486          */
 487         public function getConfiguredReadOnlyMode() {
 488                 return $this->getService( 'ConfiguredReadOnlyMode' );
 489         }
 490
 491         /**
 492          * @since 1.32
 493          * @return \Language
 494          */
 495         public function getContentLanguage() {
 496                 return $this->getService( 'ContentLanguage' );
 497         }
 498
 499         /**
 500          * @since 1.31
 501          * @return NameTableStore
 502          */
 503         public function getContentModelStore() {
 504                 return $this->getService( 'NameTableStoreFactory' )->getContentModels();
 505         }
 506
 507         /**
 508          * @since 1.28
 509          * @return CryptHKDF
 510          */
 511         public function getCryptHKDF() {
 512                 return $this->getService( 'CryptHKDF' );
 513         }
 514
 515         /**
 516          * @since 1.28
 517          * @deprecated since 1.32, use random_bytes()/random_int()
 518          * @return CryptRand
 519          */
 520         public function getCryptRand() {
 521                 return $this->getService( 'CryptRand' );
 522         }
 523
 524         /**
 525          * @since 1.28
 526          * @return LoadBalancer The main DB load balancer for the local wiki.
 527          */
 528         public function getDBLoadBalancer() {
 529                 return $this->getService( 'DBLoadBalancer' );
 530         }
 531
 532         /**
 533          * @since 1.28
 534          * @return LBFactory
 535          */
 536         public function getDBLoadBalancerFactory() {
 537                 return $this->getService( 'DBLoadBalancerFactory' );
 538         }
 539
 540         /**
 541          * @since 1.27
 542          * @return EventRelayerGroup
 543          */
 544         public function getEventRelayerGroup() {
 545                 return $this->getService( 'EventRelayerGroup' );
 546         }
 547
 548         /**
 549          * @since 1.31
 550          * @return \ExternalStoreFactory
 551          */
 552         public function getExternalStoreFactory() {
 553                 return $this->getService( 'ExternalStoreFactory' );
 554         }
 555
 556         /**
 557          * @since 1.28
 558          * @return GenderCache
 559          */
 560         public function getGenderCache() {
 561                 return $this->getService( 'GenderCache' );
 562         }
 563
 564         /**
 565          * @since 1.31
 566          * @return HttpRequestFactory
 567          */
 568         public function getHttpRequestFactory() {
 569                 return $this->getService( 'HttpRequestFactory' );
 570         }
 571
 572         /**
 573          * @since 1.28
 574          * @return InterwikiLookup
 575          */
 576         public function getInterwikiLookup() {
 577                 return $this->getService( 'InterwikiLookup' );
 578         }
 579
 580         /**
 581          * @since 1.28
 582          * @return LinkCache
 583          */
 584         public function getLinkCache() {
 585                 return $this->getService( 'LinkCache' );
 586         }
 587
 588         /**
 589          * LinkRenderer instance that can be used
 590          * if no custom options are needed
 591          *
 592          * @since 1.28
 593          * @return LinkRenderer
 594          */
 595         public function getLinkRenderer() {
 596                 return $this->getService( 'LinkRenderer' );
 597         }
 598
 599         /**
 600          * @since 1.28
 601          * @return LinkRendererFactory
 602          */
 603         public function getLinkRendererFactory() {
 604                 return $this->getService( 'LinkRendererFactory' );
 605         }
 606
 607         /**
 608          * @since 1.28
 609          * @return \BagOStuff
 610          */
 611         public function getLocalServerObjectCache() {
 612                 return $this->getService( 'LocalServerObjectCache' );
 613         }
 614
 615         /**
 616          * @since 1.32
 617          * @return MagicWordFactory
 618          */
 619         public function getMagicWordFactory() {
 620                 return $this->getService( 'MagicWordFactory' );
 621         }
 622
 623         /**
 624          * Returns the Config object that provides configuration for MediaWiki core.
 625          * This may or may not be the same object that is returned by getBootstrapConfig().
 626          *
 627          * @since 1.27
 628          * @return Config
 629          */
 630         public function getMainConfig() {
 631                 return $this->getService( 'MainConfig' );
 632         }
 633
 634         /**
 635          * @since 1.28
 636          * @return \BagOStuff
 637          */
 638         public function getMainObjectStash() {
 639                 return $this->getService( 'MainObjectStash' );
 640         }
 641
 642         /**
 643          * @since 1.28
 644          * @return \WANObjectCache
 645          */
 646         public function getMainWANObjectCache() {
 647                 return $this->getService( 'MainWANObjectCache' );
 648         }
 649
 650         /**
 651          * @since 1.28
 652          * @return MediaHandlerFactory
 653          */
 654         public function getMediaHandlerFactory() {
 655                 return $this->getService( 'MediaHandlerFactory' );
 656         }
 657
 658         /**
 659          * @since 1.28
 660          * @return MimeAnalyzer
 661          */
 662         public function getMimeAnalyzer() {
 663                 return $this->getService( 'MimeAnalyzer' );
 664         }
 665
 666         /**
 667          * @since 1.32
 668          * @return NameTableStoreFactory
 669          */
 670         public function getNameTableStoreFactory() {
 671                 return $this->getService( 'NameTableStoreFactory' );
 672         }
 673
 674         /**
 675          * @return OldRevisionImporter
 676          */
 677         public function getOldRevisionImporter() {
 678                 return $this->getService( 'OldRevisionImporter' );
 679         }
 680
 681         /**
 682          * @since 1.29
 683          * @return Parser
 684          */
 685         public function getParser() {
 686                 return $this->getService( 'Parser' );
 687         }
 688
 689         /**
 690          * @since 1.30
 691          * @return ParserCache
 692          */
 693         public function getParserCache() {
 694                 return $this->getService( 'ParserCache' );
 695         }
 696
 697         /**
 698          * @since 1.32
 699          * @return ParserFactory
 700          */
 701         public function getParserFactory() {
 702                 return $this->getService( 'ParserFactory' );
 703         }
 704
 705         /**
 706          * @since 1.32
 707          * @return PasswordFactory
 708          */
 709         public function getPasswordFactory() {
 710                 return $this->getService( 'PasswordFactory' );
 711         }
 712
 713         /**
 714          * @since 1.32
 715          * @return StatsdDataFactoryInterface
 716          */
 717         public function getPerDbNameStatsdDataFactory() {
 718                 return $this->getService( 'PerDbNameStatsdDataFactory' );
 719         }
 720
 721         /**
 722          * @since 1.31
 723          * @return PreferencesFactory
 724          */
 725         public function getPreferencesFactory() {
 726                 return $this->getService( 'PreferencesFactory' );
 727         }
 728
 729         /**
 730          * @since 1.28
 731          * @return ProxyLookup
 732          */
 733         public function getProxyLookup() {
 734                 return $this->getService( 'ProxyLookup' );
 735         }
 736
 737         /**
 738          * @since 1.29
 739          * @return \ReadOnlyMode
 740          */
 741         public function getReadOnlyMode() {
 742                 return $this->getService( 'ReadOnlyMode' );
 743         }
 744
 745         /**
 746          * @since 1.31
 747          * @return RevisionFactory
 748          */
 749         public function getRevisionFactory() {
 750                 return $this->getService( 'RevisionFactory' );
 751         }
 752
 753         /**
 754          * @since 1.31
 755          * @return RevisionLookup
 756          */
 757         public function getRevisionLookup() {
 758                 return $this->getService( 'RevisionLookup' );
 759         }
 760
 761         /**
 762          * @since 1.32
 763          * @return RevisionRenderer
 764          */
 765         public function getRevisionRenderer() {
 766                 return $this->getService( 'RevisionRenderer' );
 767         }
 768
 769         /**
 770          * @since 1.31
 771          * @return RevisionStore
 772          */
 773         public function getRevisionStore() {
 774                 return $this->getService( 'RevisionStore' );
 775         }
 776
 777         /**
 778          * @since 1.32
 779          * @return RevisionStoreFactory
 780          */
 781         public function getRevisionStoreFactory() {
 782                 return $this->getService( 'RevisionStoreFactory' );
 783         }
 784
 785         /**
 786          * @since 1.27
 787          * @return SearchEngine
 788          */
 789         public function newSearchEngine() {
 790                 // New engine object every time, since they keep state
 791                 return $this->getService( 'SearchEngineFactory' )->create();
 792         }
 793
 794         /**
 795          * @since 1.27
 796          * @return SearchEngineConfig
 797          */
 798         public function getSearchEngineConfig() {
 799                 return $this->getService( 'SearchEngineConfig' );
 800         }
 801
 802         /**
 803          * @since 1.27
 804          * @return SearchEngineFactory
 805          */
 806         public function getSearchEngineFactory() {
 807                 return $this->getService( 'SearchEngineFactory' );
 808         }
 809
 810         /**
 811          * @since 1.30
 812          * @return CommandFactory
 813          */
 814         public function getShellCommandFactory() {
 815                 return $this->getService( 'ShellCommandFactory' );
 816         }
 817
 818         /**
 819          * @since 1.27
 820          * @return SiteLookup
 821          */
 822         public function getSiteLookup() {
 823                 return $this->getService( 'SiteLookup' );
 824         }
 825
 826         /**
 827          * @since 1.27
 828          * @return SiteStore
 829          */
 830         public function getSiteStore() {
 831                 return $this->getService( 'SiteStore' );
 832         }
 833
 834         /**
 835          * @since 1.27
 836          * @return SkinFactory
 837          */
 838         public function getSkinFactory() {
 839                 return $this->getService( 'SkinFactory' );
 840         }
 841
 842         /**
 843          * @since 1.31
 844          * @return NameTableStore
 845          */
 846         public function getSlotRoleStore() {
 847                 return $this->getService( 'NameTableStoreFactory' )->getSlotRoles();
 848         }
 849
 850         /**
 851          * @since 1.32
 852          * @return SpecialPageFactory
 853          */
 854         public function getSpecialPageFactory() : SpecialPageFactory {
 855                 return $this->getService( 'SpecialPageFactory' );
 856         }
 857
 858         /**
 859          * @since 1.27
 860          * @return IBufferingStatsdDataFactory
 861          */
 862         public function getStatsdDataFactory() {
 863                 return $this->getService( 'StatsdDataFactory' );
 864         }
 865
 866         /**
 867          * @since 1.28
 868          * @return TitleFormatter
 869          */
 870         public function getTitleFormatter() {
 871                 return $this->getService( 'TitleFormatter' );
 872         }
 873
 874         /**
 875          * @since 1.28
 876          * @return TitleParser
 877          */
 878         public function getTitleParser() {
 879                 return $this->getService( 'TitleParser' );
 880         }
 881
 882         /**
 883          * @since 1.32
 884          * @return UploadRevisionImporter
 885          */
 886         public function getUploadRevisionImporter() {
 887                 return $this->getService( 'UploadRevisionImporter' );
 888         }
 889
 890         /**
 891          * @since 1.28
 892          * @return VirtualRESTServiceClient
 893          */
 894         public function getVirtualRESTServiceClient() {
 895                 return $this->getService( 'VirtualRESTServiceClient' );
 896         }
 897
 898         /**
 899          * @since 1.28
 900          * @return WatchedItemQueryService
 901          */
 902         public function getWatchedItemQueryService() {
 903                 return $this->getService( 'WatchedItemQueryService' );
 904         }
 905
 906         /**
 907          * @since 1.28
 908          * @return WatchedItemStoreInterface
 909          */
 910         public function getWatchedItemStore() {
 911                 return $this->getService( 'WatchedItemStore' );
 912         }
 913
 914         /**
 915          * @since 1.31
 916          * @return \OldRevisionImporter
 917          */
 918         public function getWikiRevisionOldRevisionImporter() {
 919                 return $this->getService( 'OldRevisionImporter' );
 920         }
 921
 922         /**
 923          * @since 1.31
 924          * @return \OldRevisionImporter
 925          */
 926         public function getWikiRevisionOldRevisionImporterNoUpdates() {
 927                 return $this->getService( 'WikiRevisionOldRevisionImporterNoUpdates' );
 928         }
 929
 930         /**
 931          * @since 1.31
 932          * @return \UploadRevisionImporter
 933          */
 934         public function getWikiRevisionUploadImporter() {
 935                 return $this->getService( 'UploadRevisionImporter' );
 936         }
 937
 938 }