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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\AbuseFilter; |
| 4 | |
| 5 | use IDBAccessObject; |
| 6 | use MediaWiki\Extension\AbuseFilter\Filter\ClosestFilterVersionNotFoundException; |
| 7 | use MediaWiki\Extension\AbuseFilter\Filter\ExistingFilter; |
| 8 | use MediaWiki\Extension\AbuseFilter\Filter\FilterNotFoundException; |
| 9 | use MediaWiki\Extension\AbuseFilter\Filter\FilterVersionNotFoundException; |
| 10 | use MediaWiki\Extension\AbuseFilter\Filter\Flags; |
| 11 | use MediaWiki\Extension\AbuseFilter\Filter\HistoryFilter; |
| 12 | use MediaWiki\Extension\AbuseFilter\Filter\LastEditInfo; |
| 13 | use MediaWiki\Extension\AbuseFilter\Filter\Specs; |
| 14 | use RuntimeException; |
| 15 | use stdClass; |
| 16 | use WANObjectCache; |
| 17 | use Wikimedia\Rdbms\ILoadBalancer; |
| 18 | use Wikimedia\Rdbms\IReadableDatabase; |
| 19 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 20 | |
| 21 | /** |
| 22 | * This class provides read access to the filters stored in the database. |
| 23 | * |
| 24 | * @todo Cache exceptions |
| 25 | */ |
| 26 | class FilterLookup implements IDBAccessObject { |
| 27 | public const SERVICE_NAME = 'AbuseFilterFilterLookup'; |
| 28 | |
| 29 | // Used in getClosestVersion |
| 30 | public const DIR_PREV = 'prev'; |
| 31 | public const DIR_NEXT = 'next'; |
| 32 | |
| 33 | /** |
| 34 | * @var ExistingFilter[] Individual filters cache. Keys can be integer IDs, or global names |
| 35 | */ |
| 36 | private $cache = []; |
| 37 | |
| 38 | /** |
| 39 | * @var ExistingFilter[][][] Cache of all active filters in each group. This is not related to |
| 40 | * the individual cache, and is replicated in WAN cache. The structure is |
| 41 | * [ local|global => [ group => [ ID => filter ] ] ] |
| 42 | * where the cache for each group has the same format as $this->cache |
| 43 | * Note that the keys are also in the form 'global-ID' for filters in 'global', although redundant. |
| 44 | */ |
| 45 | private $groupCache = [ 'local' => [], 'global' => [] ]; |
| 46 | |
| 47 | /** @var HistoryFilter[] */ |
| 48 | private $historyCache = []; |
| 49 | |
| 50 | /** @var int[] */ |
| 51 | private $firstVersionCache = []; |
| 52 | |
| 53 | /** @var int[] */ |
| 54 | private $lastVersionCache = []; |
| 55 | |
| 56 | /** |
| 57 | * @var int[][] [ filter => [ historyID => [ prev, next ] ] ] |
| 58 | * @phan-var array<int,array<int,array{prev?:int,next?:int}>> |
| 59 | */ |
| 60 | private $closestVersionsCache = []; |
| 61 | |
| 62 | /** @var ILoadBalancer */ |
| 63 | private $loadBalancer; |
| 64 | |
| 65 | /** @var WANObjectCache */ |
| 66 | private $wanCache; |
| 67 | |
| 68 | /** @var CentralDBManager */ |
| 69 | private $centralDBManager; |
| 70 | |
| 71 | /** |
| 72 | * @var bool Flag used in PHPUnit tests to "hide" local filters when testing global ones, so that we can use the |
| 73 | * local database pretending it's not local. |
| 74 | */ |
| 75 | private bool $localFiltersHiddenForTest = false; |
| 76 | |
| 77 | /** |
| 78 | * @param ILoadBalancer $loadBalancer |
| 79 | * @param WANObjectCache $cache |
| 80 | * @param CentralDBManager $centralDBManager |
| 81 | */ |
| 82 | public function __construct( |
| 83 | ILoadBalancer $loadBalancer, |
| 84 | WANObjectCache $cache, |
| 85 | CentralDBManager $centralDBManager |
| 86 | ) { |
| 87 | $this->loadBalancer = $loadBalancer; |
| 88 | $this->wanCache = $cache; |
| 89 | $this->centralDBManager = $centralDBManager; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * @param int $filterID |
| 94 | * @param bool $global |
| 95 | * @param int $flags One of the IDBAccessObject::READ_* constants |
| 96 | * @return ExistingFilter |
| 97 | * @throws FilterNotFoundException if the filter doesn't exist |
| 98 | * @throws CentralDBNotAvailableException |
| 99 | */ |
| 100 | public function getFilter( |
| 101 | int $filterID, bool $global, int $flags = IDBAccessObject::READ_NORMAL |
| 102 | ): ExistingFilter { |
| 103 | $cacheKey = $this->getCacheKey( $filterID, $global ); |
| 104 | if ( $flags !== IDBAccessObject::READ_NORMAL || !isset( $this->cache[$cacheKey] ) ) { |
| 105 | $dbr = ( $flags & IDBAccessObject::READ_LATEST ) |
| 106 | ? $this->getDBConnection( DB_PRIMARY, $global ) |
| 107 | : $this->getDBConnection( DB_REPLICA, $global ); |
| 108 | $row = $this->getAbuseFilterQueryBuilder( $dbr ) |
| 109 | ->where( [ 'af_id' => $filterID ] ) |
| 110 | ->recency( $flags ) |
| 111 | ->caller( __METHOD__ )->fetchRow(); |
| 112 | |
| 113 | if ( !$row ) { |
| 114 | throw new FilterNotFoundException( $filterID, $global ); |
| 115 | } |
| 116 | $fname = __METHOD__; |
| 117 | $getActionsCB = function () use ( $dbr, $fname, $row ): array { |
| 118 | return $this->getActionsFromDB( $dbr, $fname, $row->af_id ); |
| 119 | }; |
| 120 | $this->cache[$cacheKey] = $this->filterFromRow( $row, $getActionsCB ); |
| 121 | } |
| 122 | |
| 123 | return $this->cache[$cacheKey]; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Get all filters that are active (and not deleted) and in the given group |
| 128 | * @param string $group |
| 129 | * @param bool $global |
| 130 | * @param int $flags |
| 131 | * @return ExistingFilter[] |
| 132 | * @throws CentralDBNotAvailableException |
| 133 | */ |
| 134 | public function getAllActiveFiltersInGroup( |
| 135 | string $group, bool $global, int $flags = IDBAccessObject::READ_NORMAL |
| 136 | ): array { |
| 137 | $domainKey = $global ? 'global' : 'local'; |
| 138 | if ( $flags !== IDBAccessObject::READ_NORMAL || !isset( $this->groupCache[$domainKey][$group] ) ) { |
| 139 | if ( $global ) { |
| 140 | $globalRulesKey = $this->getGlobalRulesKey( $group ); |
| 141 | $ret = $this->wanCache->getWithSetCallback( |
| 142 | $globalRulesKey, |
| 143 | WANObjectCache::TTL_WEEK, |
| 144 | function () use ( $group, $global, $flags ) { |
| 145 | return $this->getAllActiveFiltersInGroupFromDB( $group, $global, $flags ); |
| 146 | }, |
| 147 | [ |
| 148 | 'checkKeys' => [ $globalRulesKey ], |
| 149 | 'lockTSE' => 300, |
| 150 | 'version' => 3 |
| 151 | ] |
| 152 | ); |
| 153 | } else { |
| 154 | $ret = $this->getAllActiveFiltersInGroupFromDB( $group, $global, $flags ); |
| 155 | } |
| 156 | |
| 157 | $this->groupCache[$domainKey][$group] = []; |
| 158 | foreach ( $ret as $key => $filter ) { |
| 159 | $this->groupCache[$domainKey][$group][$key] = $filter; |
| 160 | $this->cache[$key] = $filter; |
| 161 | } |
| 162 | } |
| 163 | return $this->groupCache[$domainKey][$group]; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * @param string $group |
| 168 | * @param bool $global |
| 169 | * @param int $flags |
| 170 | * @return ExistingFilter[] |
| 171 | */ |
| 172 | private function getAllActiveFiltersInGroupFromDB( string $group, bool $global, int $flags ): array { |
| 173 | if ( $this->localFiltersHiddenForTest && !$global ) { |
| 174 | return []; |
| 175 | } |
| 176 | $dbr = ( $flags & IDBAccessObject::READ_LATEST ) |
| 177 | ? $this->getDBConnection( DB_PRIMARY, $global ) |
| 178 | : $this->getDBConnection( DB_REPLICA, $global ); |
| 179 | $queryBuilder = $this->getAbuseFilterQueryBuilder( $dbr ) |
| 180 | ->where( [ 'af_enabled' => 1, 'af_deleted' => 0, 'af_group' => $group ] ) |
| 181 | ->recency( $flags ); |
| 182 | |
| 183 | if ( $global ) { |
| 184 | $queryBuilder->andWhere( [ 'af_global' => 1 ] ); |
| 185 | } |
| 186 | |
| 187 | // Note, excluding individually cached filter now wouldn't help much, so take it as |
| 188 | // an occasion to refresh the cache later |
| 189 | $rows = $queryBuilder->caller( __METHOD__ )->fetchResultSet(); |
| 190 | |
| 191 | $fname = __METHOD__; |
| 192 | $ret = []; |
| 193 | foreach ( $rows as $row ) { |
| 194 | $filterKey = $this->getCacheKey( $row->af_id, $global ); |
| 195 | $getActionsCB = function () use ( $dbr, $fname, $row ): array { |
| 196 | return $this->getActionsFromDB( $dbr, $fname, $row->af_id ); |
| 197 | }; |
| 198 | $ret[$filterKey] = $this->filterFromRow( |
| 199 | $row, |
| 200 | // Don't pass a closure if global, as this is going to be serialized when caching |
| 201 | $global ? $getActionsCB() : $getActionsCB |
| 202 | ); |
| 203 | } |
| 204 | return $ret; |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * @param int $dbIndex |
| 209 | * @param bool $global |
| 210 | * @return IReadableDatabase |
| 211 | * @throws CentralDBNotAvailableException |
| 212 | */ |
| 213 | private function getDBConnection( int $dbIndex, bool $global ): IReadableDatabase { |
| 214 | if ( $global ) { |
| 215 | return $this->centralDBManager->getConnection( $dbIndex ); |
| 216 | } else { |
| 217 | return $this->loadBalancer->getConnection( $dbIndex ); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * @param IReadableDatabase $db |
| 223 | * @param string $fname |
| 224 | * @param int $id |
| 225 | * @return array |
| 226 | */ |
| 227 | private function getActionsFromDB( IReadableDatabase $db, string $fname, int $id ): array { |
| 228 | $res = $db->select( |
| 229 | 'abuse_filter_action', |
| 230 | [ 'afa_consequence', 'afa_parameters' ], |
| 231 | [ 'afa_filter' => $id ], |
| 232 | $fname |
| 233 | ); |
| 234 | |
| 235 | $actions = []; |
| 236 | foreach ( $res as $actionRow ) { |
| 237 | $actions[$actionRow->afa_consequence] = $actionRow->afa_parameters !== '' |
| 238 | ? explode( "\n", $actionRow->afa_parameters ) |
| 239 | : []; |
| 240 | } |
| 241 | return $actions; |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * Get an old version of the given (local) filter, with its actions |
| 246 | * |
| 247 | * @param int $version Unique identifier of the version |
| 248 | * @param int $flags |
| 249 | * @return HistoryFilter |
| 250 | * @throws FilterVersionNotFoundException if the version doesn't exist |
| 251 | */ |
| 252 | public function getFilterVersion( |
| 253 | int $version, |
| 254 | int $flags = IDBAccessObject::READ_NORMAL |
| 255 | ): HistoryFilter { |
| 256 | if ( $flags !== IDBAccessObject::READ_NORMAL || !isset( $this->historyCache[$version] ) ) { |
| 257 | $dbr = ( $flags & IDBAccessObject::READ_LATEST ) |
| 258 | ? $this->loadBalancer->getConnection( DB_PRIMARY ) |
| 259 | : $this->loadBalancer->getConnection( DB_REPLICA ); |
| 260 | $row = $this->getAbuseFilterHistoryQueryBuilder( $dbr ) |
| 261 | ->where( [ 'afh_id' => $version ] ) |
| 262 | ->recency( $flags ) |
| 263 | ->caller( __METHOD__ )->fetchRow(); |
| 264 | if ( !$row ) { |
| 265 | throw new FilterVersionNotFoundException( $version ); |
| 266 | } |
| 267 | $this->historyCache[$version] = $this->filterFromHistoryRow( $row ); |
| 268 | } |
| 269 | |
| 270 | return $this->historyCache[$version]; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * @param int $filterID |
| 275 | * @return HistoryFilter |
| 276 | * @throws FilterNotFoundException If the filter doesn't exist |
| 277 | */ |
| 278 | public function getLastHistoryVersion( int $filterID ): HistoryFilter { |
| 279 | if ( !isset( $this->lastVersionCache[$filterID] ) ) { |
| 280 | $dbr = $this->loadBalancer->getConnection( DB_REPLICA ); |
| 281 | $row = $this->getAbuseFilterHistoryQueryBuilder( $dbr ) |
| 282 | ->where( [ 'afh_filter' => $filterID ] ) |
| 283 | ->orderBy( 'afh_id', SelectQueryBuilder::SORT_DESC ) |
| 284 | ->caller( __METHOD__ )->fetchRow(); |
| 285 | if ( !$row ) { |
| 286 | throw new FilterNotFoundException( $filterID, false ); |
| 287 | } |
| 288 | $filterObj = $this->filterFromHistoryRow( $row ); |
| 289 | $this->lastVersionCache[$filterID] = $filterObj->getHistoryID(); |
| 290 | $this->historyCache[$filterObj->getHistoryID()] = $filterObj; |
| 291 | } |
| 292 | return $this->historyCache[ $this->lastVersionCache[$filterID] ]; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * @param int $historyID |
| 297 | * @param int $filterID |
| 298 | * @param string $direction self::DIR_PREV or self::DIR_NEXT |
| 299 | * @return HistoryFilter |
| 300 | * @throws ClosestFilterVersionNotFoundException |
| 301 | */ |
| 302 | public function getClosestVersion( int $historyID, int $filterID, string $direction ): HistoryFilter { |
| 303 | if ( !isset( $this->closestVersionsCache[$filterID][$historyID][$direction] ) ) { |
| 304 | $comparison = $direction === self::DIR_PREV ? '<' : '>'; |
| 305 | $order = $direction === self::DIR_PREV ? 'DESC' : 'ASC'; |
| 306 | $dbr = $this->loadBalancer->getConnection( DB_REPLICA ); |
| 307 | $row = $this->getAbuseFilterHistoryQueryBuilder( $dbr ) |
| 308 | ->where( [ 'afh_filter' => $filterID ] ) |
| 309 | ->andWhere( $dbr->expr( 'afh_id', $comparison, $historyID ) ) |
| 310 | ->orderBy( 'afh_timestamp', $order ) |
| 311 | ->caller( __METHOD__ )->fetchRow(); |
| 312 | if ( !$row ) { |
| 313 | throw new ClosestFilterVersionNotFoundException( $filterID, $historyID ); |
| 314 | } |
| 315 | $filterObj = $this->filterFromHistoryRow( $row ); |
| 316 | $this->closestVersionsCache[$filterID][$historyID][$direction] = $filterObj->getHistoryID(); |
| 317 | $this->historyCache[$filterObj->getHistoryID()] = $filterObj; |
| 318 | } |
| 319 | $histID = $this->closestVersionsCache[$filterID][$historyID][$direction]; |
| 320 | return $this->historyCache[$histID]; |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Get the history ID of the first change to a given filter |
| 325 | * |
| 326 | * @param int $filterID |
| 327 | * @return int |
| 328 | * @throws FilterNotFoundException |
| 329 | */ |
| 330 | public function getFirstFilterVersionID( int $filterID ): int { |
| 331 | if ( !isset( $this->firstVersionCache[$filterID] ) ) { |
| 332 | $dbr = $this->loadBalancer->getConnection( DB_REPLICA ); |
| 333 | $historyID = $dbr->selectField( |
| 334 | 'abuse_filter_history', |
| 335 | 'MIN(afh_id)', |
| 336 | [ 'afh_filter' => $filterID ], |
| 337 | __METHOD__ |
| 338 | ); |
| 339 | if ( $historyID === false ) { |
| 340 | throw new FilterNotFoundException( $filterID, false ); |
| 341 | } |
| 342 | $this->firstVersionCache[$filterID] = (int)$historyID; |
| 343 | } |
| 344 | |
| 345 | return $this->firstVersionCache[$filterID]; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Resets the internal cache of Filter objects |
| 350 | */ |
| 351 | public function clearLocalCache(): void { |
| 352 | $this->cache = []; |
| 353 | $this->groupCache = [ 'local' => [], 'global' => [] ]; |
| 354 | $this->historyCache = []; |
| 355 | $this->firstVersionCache = []; |
| 356 | $this->lastVersionCache = []; |
| 357 | $this->closestVersionsCache = []; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Purge the shared cache of global filters in the given group. |
| 362 | * @note This doesn't purge the local cache |
| 363 | * @param string $group |
| 364 | */ |
| 365 | public function purgeGroupWANCache( string $group ): void { |
| 366 | $this->wanCache->touchCheckKey( $this->getGlobalRulesKey( $group ) ); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * @param string $group The filter's group (as defined in $wgAbuseFilterValidGroups) |
| 371 | * @return string |
| 372 | */ |
| 373 | private function getGlobalRulesKey( string $group ): string { |
| 374 | if ( !$this->centralDBManager->filterIsCentral() ) { |
| 375 | return $this->wanCache->makeGlobalKey( |
| 376 | 'abusefilter', |
| 377 | 'rules', |
| 378 | $this->centralDBManager->getCentralDBName(), |
| 379 | $group |
| 380 | ); |
| 381 | } |
| 382 | |
| 383 | return $this->wanCache->makeKey( 'abusefilter', 'rules', $group ); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Note: this is private because no external caller should access DB rows directly. |
| 388 | * @param stdClass $row |
| 389 | * @return HistoryFilter |
| 390 | */ |
| 391 | private function filterFromHistoryRow( stdClass $row ): HistoryFilter { |
| 392 | $actionsRaw = unserialize( $row->afh_actions ); |
| 393 | $actions = is_array( $actionsRaw ) ? $actionsRaw : []; |
| 394 | $flags = $row->afh_flags ? explode( ',', $row->afh_flags ) : []; |
| 395 | return new HistoryFilter( |
| 396 | new Specs( |
| 397 | trim( $row->afh_pattern ), |
| 398 | $row->afh_comments, |
| 399 | // FIXME: Make the DB field NOT NULL (T263324) |
| 400 | (string)$row->afh_public_comments, |
| 401 | array_keys( $actions ), |
| 402 | // FIXME Make the field NOT NULL and add default (T263324) |
| 403 | $row->afh_group ?? 'default' |
| 404 | ), |
| 405 | new Flags( |
| 406 | in_array( 'enabled', $flags, true ), |
| 407 | in_array( 'deleted', $flags, true ), |
| 408 | in_array( 'hidden', $flags, true ), |
| 409 | in_array( 'global', $flags, true ) |
| 410 | ), |
| 411 | $actions, |
| 412 | new LastEditInfo( |
| 413 | (int)$row->afh_user, |
| 414 | $row->afh_user_text, |
| 415 | $row->afh_timestamp |
| 416 | ), |
| 417 | (int)$row->afh_filter, |
| 418 | $row->afh_id |
| 419 | ); |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Note: this is private because no external caller should access DB rows directly. |
| 424 | * @param stdClass $row |
| 425 | * @param array[]|callable $actions |
| 426 | * @return ExistingFilter |
| 427 | */ |
| 428 | private function filterFromRow( stdClass $row, $actions ): ExistingFilter { |
| 429 | return new ExistingFilter( |
| 430 | new Specs( |
| 431 | trim( $row->af_pattern ), |
| 432 | // FIXME: Make the DB fields for these NOT NULL (T263324) |
| 433 | (string)$row->af_comments, |
| 434 | (string)$row->af_public_comments, |
| 435 | $row->af_actions !== '' ? explode( ',', $row->af_actions ) : [], |
| 436 | $row->af_group |
| 437 | ), |
| 438 | new Flags( |
| 439 | (bool)$row->af_enabled, |
| 440 | (bool)$row->af_deleted, |
| 441 | (bool)$row->af_hidden, |
| 442 | (bool)$row->af_global |
| 443 | ), |
| 444 | $actions, |
| 445 | new LastEditInfo( |
| 446 | (int)$row->af_user, |
| 447 | $row->af_user_text, |
| 448 | $row->af_timestamp |
| 449 | ), |
| 450 | (int)$row->af_id, |
| 451 | isset( $row->af_hit_count ) ? (int)$row->af_hit_count : null, |
| 452 | isset( $row->af_throttled ) ? (bool)$row->af_throttled : null |
| 453 | ); |
| 454 | } |
| 455 | |
| 456 | private function getAbuseFilterQueryBuilder( IReadableDatabase $dbr ): SelectQueryBuilder { |
| 457 | return $dbr->newSelectQueryBuilder() |
| 458 | ->select( [ |
| 459 | 'af_id', |
| 460 | 'af_pattern', |
| 461 | 'af_timestamp', |
| 462 | 'af_enabled', |
| 463 | 'af_comments', |
| 464 | 'af_public_comments', |
| 465 | 'af_hidden', |
| 466 | 'af_hit_count', |
| 467 | 'af_throttled', |
| 468 | 'af_deleted', |
| 469 | 'af_actions', |
| 470 | 'af_global', |
| 471 | 'af_group', |
| 472 | 'af_user' => 'actor_af_user.actor_user', |
| 473 | 'af_user_text' => 'actor_af_user.actor_name', |
| 474 | 'af_actor' => 'af_actor' |
| 475 | ] ) |
| 476 | ->from( 'abuse_filter' ) |
| 477 | ->join( 'actor', 'actor_af_user', 'actor_af_user.actor_id = af_actor' ); |
| 478 | } |
| 479 | |
| 480 | private function getAbuseFilterHistoryQueryBuilder( IReadableDatabase $dbr ): SelectQueryBuilder { |
| 481 | return $dbr->newSelectQueryBuilder() |
| 482 | ->select( [ |
| 483 | 'afh_id', |
| 484 | 'afh_pattern', |
| 485 | 'afh_timestamp', |
| 486 | 'afh_filter', |
| 487 | 'afh_comments', |
| 488 | 'afh_public_comments', |
| 489 | 'afh_flags', |
| 490 | 'afh_actions', |
| 491 | 'afh_group', |
| 492 | 'afh_user' => 'actor_afh_user.actor_user', |
| 493 | 'afh_user_text' => 'actor_afh_user.actor_name', |
| 494 | 'afh_actor' => 'afh_actor' |
| 495 | ] ) |
| 496 | ->from( 'abuse_filter_history' ) |
| 497 | ->join( 'actor', 'actor_afh_user', 'actor_afh_user.actor_id = afh_actor' ); |
| 498 | } |
| 499 | |
| 500 | /** |
| 501 | * @param int $filterID |
| 502 | * @param bool $global |
| 503 | * @return string |
| 504 | */ |
| 505 | private function getCacheKey( int $filterID, bool $global ): string { |
| 506 | return GlobalNameUtils::buildGlobalName( $filterID, $global ); |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * "Hides" local filters when testing global ones, so that we can use the |
| 511 | * local database pretending it's not local. |
| 512 | * @codeCoverageIgnore |
| 513 | */ |
| 514 | public function hideLocalFiltersForTesting(): void { |
| 515 | if ( !defined( 'MW_PHPUNIT_TEST' ) ) { |
| 516 | throw new RuntimeException( 'Can only be called in tests' ); |
| 517 | } |
| 518 | $this->localFiltersHiddenForTest = true; |
| 519 | } |
| 520 | } |