3 * Default wiring for MediaWiki services.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
22 * This file is loaded by MediaWiki\MediaWikiServices::getInstance() during the
23 * bootstrapping of the dependency injection framework.
25 * This file returns an array that associates service name with instantiator functions
26 * that create the default instances for the services used by MediaWiki core.
27 * For every service that MediaWiki core requires, an instantiator must be defined in
30 * @note As of version 1.27, MediaWiki is only beginning to use dependency injection.
31 * The services defined here do not yet fully represent all services used by core,
32 * much of the code still relies on global state for this accessing services.
36 * @see docs/injection.txt for an overview of using dependency injection in the
37 * MediaWiki code base.
40 use MediaWiki\Interwiki\ClassicInterwikiLookup
;
41 use MediaWiki\Linker\LinkRendererFactory
;
42 use MediaWiki\Logger\LoggerFactory
;
43 use MediaWiki\MediaWikiServices
;
46 'DBLoadBalancerFactory' => function( MediaWikiServices
$services ) {
47 $mainConfig = $services->getMainConfig();
49 $lbConf = MWLBFactory
::applyDefaultConfig(
50 $mainConfig->get( 'LBFactoryConf' ),
53 $class = MWLBFactory
::getLBFactoryClass( $lbConf );
55 return new $class( $lbConf );
58 'DBLoadBalancer' => function( MediaWikiServices
$services ) {
59 // just return the default LB from the DBLoadBalancerFactory service
60 return $services->getDBLoadBalancerFactory()->getMainLB();
63 'SiteStore' => function( MediaWikiServices
$services ) {
64 $rawSiteStore = new DBSiteStore( $services->getDBLoadBalancer() );
66 // TODO: replace wfGetCache with a CacheFactory service.
67 // TODO: replace wfIsHHVM with a capabilities service.
68 $cache = wfGetCache( wfIsHHVM() ? CACHE_ACCEL
: CACHE_ANYTHING
);
70 return new CachingSiteStore( $rawSiteStore, $cache );
73 'SiteLookup' => function( MediaWikiServices
$services ) {
74 // Use the default SiteStore as the SiteLookup implementation for now
75 return $services->getSiteStore();
78 'ConfigFactory' => function( MediaWikiServices
$services ) {
79 // Use the bootstrap config to initialize the ConfigFactory.
80 $registry = $services->getBootstrapConfig()->get( 'ConfigRegistry' );
81 $factory = new ConfigFactory();
83 foreach ( $registry as $name => $callback ) {
84 $factory->register( $name, $callback );
89 'MainConfig' => function( MediaWikiServices
$services ) {
90 // Use the 'main' config from the ConfigFactory service.
91 return $services->getConfigFactory()->makeConfig( 'main' );
94 'InterwikiLookup' => function( MediaWikiServices
$services ) {
95 global $wgContLang; // TODO: manage $wgContLang as a service
96 $config = $services->getMainConfig();
97 return new ClassicInterwikiLookup(
99 ObjectCache
::getMainWANInstance(),
100 $config->get( 'InterwikiExpiry' ),
101 $config->get( 'InterwikiCache' ),
102 $config->get( 'InterwikiScopes' ),
103 $config->get( 'InterwikiFallbackSite' )
107 'StatsdDataFactory' => function( MediaWikiServices
$services ) {
108 return new BufferingStatsdDataFactory(
109 rtrim( $services->getMainConfig()->get( 'StatsdMetricPrefix' ), '.' )
113 'EventRelayerGroup' => function( MediaWikiServices
$services ) {
114 return new EventRelayerGroup( $services->getMainConfig()->get( 'EventRelayerConfig' ) );
117 'SearchEngineFactory' => function( MediaWikiServices
$services ) {
118 return new SearchEngineFactory( $services->getSearchEngineConfig() );
121 'SearchEngineConfig' => function( MediaWikiServices
$services ) {
123 return new SearchEngineConfig( $services->getMainConfig(), $wgContLang );
126 'SkinFactory' => function( MediaWikiServices
$services ) {
127 $factory = new SkinFactory();
129 $names = $services->getMainConfig()->get( 'ValidSkinNames' );
131 foreach ( $names as $name => $skin ) {
132 $factory->register( $name, $skin, function () use ( $name, $skin ) {
133 $class = "Skin$skin";
134 return new $class( $name );
137 // Register a hidden "fallback" skin
138 $factory->register( 'fallback', 'Fallback', function () {
139 return new SkinFallback
;
141 // Register a hidden skin for api output
142 $factory->register( 'apioutput', 'ApiOutput', function () {
149 'WatchedItemStore' => function( MediaWikiServices
$services ) {
150 $store = new WatchedItemStore(
151 $services->getDBLoadBalancer(),
152 new HashBagOStuff( [ 'maxKeys' => 100 ] )
154 $store->setStatsdDataFactory( $services->getStatsdDataFactory() );
158 'WatchedItemQueryService' => function( MediaWikiServices
$services ) {
159 return new WatchedItemQueryService( $services->getDBLoadBalancer() );
162 'CryptRand' => function( MediaWikiServices
$services ) {
163 $secretKey = $services->getMainConfig()->get( 'SecretKey' );
164 return new CryptRand(
166 // To try vary the system information of the state a bit more
167 // by including the system's hostname into the state
169 // It's mostly worthless but throw the wiki's id into the data
170 // for a little more variance
172 // If we have a secret key set then throw it into the state as well
173 function() use ( $secretKey ) {
174 return $secretKey ?
: '';
177 // The config file is likely the most often edited file we know should
178 // be around so include its stat info into the state.
179 // The constant with its location will almost always be defined, as
180 // WebStart.php defines MW_CONFIG_FILE to $IP/LocalSettings.php unless
181 // being configured with MW_CONFIG_CALLBACK (e.g. the installer).
182 defined( 'MW_CONFIG_FILE' ) ?
[ MW_CONFIG_FILE
] : [],
183 LoggerFactory
::getInstance( 'CryptRand' )
187 'CryptHKDF' => function( MediaWikiServices
$services ) {
188 $config = $services->getMainConfig();
190 $secret = $config->get( 'HKDFSecret' ) ?
: $config->get( 'SecretKey' );
192 throw new RuntimeException( "Cannot use MWCryptHKDF without a secret." );
195 // In HKDF, the context can be known to the attacker, but this will
196 // keep simultaneous runs from producing the same output.
197 $context = [ microtime(), getmypid(), gethostname() ];
199 // Setup salt cache. Use APC, or fallback to the main cache if it isn't setup
200 $cache = $services->getLocalServerObjectCache();
201 if ( $cache instanceof EmptyBagOStuff
) {
202 $cache = ObjectCache
::getLocalClusterInstance();
205 return new CryptHKDF( $secret, $config->get( 'HKDFAlgorithm' ),
206 $cache, $context, $services->getCryptRand()
210 'MediaHandlerFactory' => function( MediaWikiServices
$services ) {
211 return new MediaHandlerFactory(
212 $services->getMainConfig()->get( 'MediaHandlers' )
216 'MimeAnalyzer' => function( MediaWikiServices
$services ) {
217 return new MimeMagic(
218 MimeMagic
::applyDefaultParameters(
220 $services->getMainConfig()
225 'ProxyLookup' => function( MediaWikiServices
$services ) {
226 $mainConfig = $services->getMainConfig();
227 return new ProxyLookup(
228 $mainConfig->get( 'SquidServers' ),
229 $mainConfig->get( 'SquidServersNoPurge' )
233 'Parser' => function( MediaWikiServices
$services ) {
234 $conf = $services->getMainConfig()->get( 'ParserConf' );
235 return ObjectFactory
::constructClassInstance( $conf['class'], [ $conf ] );
238 'LinkCache' => function( MediaWikiServices
$services ) {
239 return new LinkCache(
240 $services->getTitleFormatter(),
241 ObjectCache
::getMainWANInstance()
245 'LinkRendererFactory' => function( MediaWikiServices
$services ) {
246 return new LinkRendererFactory(
247 $services->getTitleFormatter(),
248 $services->getLinkCache()
252 'LinkRenderer' => function( MediaWikiServices
$services ) {
255 if ( defined( 'MW_NO_SESSION' ) ) {
256 return $services->getLinkRendererFactory()->create();
258 return $services->getLinkRendererFactory()->createForUser( $wgUser );
262 'GenderCache' => function( MediaWikiServices
$services ) {
263 return new GenderCache();
266 '_MediaWikiTitleCodec' => function( MediaWikiServices
$services ) {
269 return new MediaWikiTitleCodec(
271 $services->getGenderCache(),
272 $services->getMainConfig()->get( 'LocalInterwikis' )
276 'TitleFormatter' => function( MediaWikiServices
$services ) {
277 return $services->getService( '_MediaWikiTitleCodec' );
280 'TitleParser' => function( MediaWikiServices
$services ) {
281 return $services->getService( '_MediaWikiTitleCodec' );
284 'MainObjectStash' => function( MediaWikiServices
$services ) {
285 $mainConfig = $services->getMainConfig();
287 $id = $mainConfig->get( 'MainStash' );
288 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
289 throw new UnexpectedValueException(
290 "Cache type \"$id\" is not present in \$wgObjectCaches." );
293 return \ObjectCache
::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
296 'MainWANObjectCache' => function( MediaWikiServices
$services ) {
297 $mainConfig = $services->getMainConfig();
299 $id = $mainConfig->get( 'MainWANCache' );
300 if ( !isset( $mainConfig->get( 'WANObjectCaches' )[$id] ) ) {
301 throw new UnexpectedValueException(
302 "WAN cache type \"$id\" is not present in \$wgWANObjectCaches." );
305 $params = $mainConfig->get( 'WANObjectCaches' )[$id];
306 $objectCacheId = $params['cacheId'];
307 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$objectCacheId] ) ) {
308 throw new UnexpectedValueException(
309 "Cache type \"$objectCacheId\" is not present in \$wgObjectCaches." );
311 $params['store'] = $mainConfig->get( 'ObjectCaches' )[$objectCacheId];
313 return \ObjectCache
::newWANCacheFromParams( $params );
316 'LocalServerObjectCache' => function( MediaWikiServices
$services ) {
317 $mainConfig = $services->getMainConfig();
319 if ( function_exists( 'apc_fetch' ) ) {
321 } elseif ( function_exists( 'apcu_fetch' ) ) {
323 } elseif ( function_exists( 'xcache_get' ) && wfIniGetBool( 'xcache.var_size' ) ) {
325 } elseif ( function_exists( 'wincache_ucache_get' ) ) {
331 if ( !isset( $mainConfig->get( 'ObjectCaches' )[$id] ) ) {
332 throw new UnexpectedValueException(
333 "Cache type \"$id\" is not present in \$wgObjectCaches." );
336 return \ObjectCache
::newFromParams( $mainConfig->get( 'ObjectCaches' )[$id] );
339 'VirtualRESTServiceClient' => function( MediaWikiServices
$services ) {
340 $config = $services->getMainConfig()->get( 'VirtualRestConfig' );
342 $vrsClient = new VirtualRESTServiceClient( new MultiHttpClient( [] ) );
343 foreach ( $config['paths'] as $prefix => $serviceConfig ) {
344 $class = $serviceConfig['class'];
345 // Merge in the global defaults
346 $constructArg = isset( $serviceConfig['options'] )
347 ?
$serviceConfig['options']
349 $constructArg +
= $config['global'];
350 // Make the VRS service available at the mount point
351 $vrsClient->mount( $prefix, [ 'class' => $class, 'config' => $constructArg ] );
357 ///////////////////////////////////////////////////////////////////////////
358 // NOTE: When adding a service here, don't forget to add a getter function
359 // in the MediaWikiServices class. The convenience getter should just call
360 // $this->getService( 'FooBarService' ).
361 ///////////////////////////////////////////////////////////////////////////