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