includes/MediaWikiServices.php

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