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