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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Watchlist; |
| 4 | |
| 5 | use DateInterval; |
| 6 | use JobQueueGroup; |
| 7 | use LogicException; |
| 8 | use MapCacheLRU; |
| 9 | use MediaWiki\Cache\LinkBatchFactory; |
| 10 | use MediaWiki\Config\ServiceOptions; |
| 11 | use MediaWiki\Deferred\DeferredUpdates; |
| 12 | use MediaWiki\Linker\LinkTarget; |
| 13 | use MediaWiki\MainConfigNames; |
| 14 | use MediaWiki\Page\PageIdentity; |
| 15 | use MediaWiki\Revision\RevisionLookup; |
| 16 | use MediaWiki\Title\NamespaceInfo; |
| 17 | use MediaWiki\Title\TitleValue; |
| 18 | use MediaWiki\User\UserIdentity; |
| 19 | use MediaWiki\Utils\MWTimestamp; |
| 20 | use stdClass; |
| 21 | use Wikimedia\Assert\Assert; |
| 22 | use Wikimedia\ObjectCache\BagOStuff; |
| 23 | use Wikimedia\ObjectCache\HashBagOStuff; |
| 24 | use Wikimedia\ParamValidator\TypeDef\ExpiryDef; |
| 25 | use Wikimedia\Rdbms\IDatabase; |
| 26 | use Wikimedia\Rdbms\ILBFactory; |
| 27 | use Wikimedia\Rdbms\IReadableDatabase; |
| 28 | use Wikimedia\Rdbms\IResultWrapper; |
| 29 | use Wikimedia\Rdbms\ReadOnlyMode; |
| 30 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 31 | use Wikimedia\ScopedCallback; |
| 32 | use Wikimedia\Stats\StatsFactory; |
| 33 | |
| 34 | /** |
| 35 | * Storage layer class for WatchedItems. |
| 36 | * Database interaction & caching |
| 37 | * TODO caching should be factored out into a CachingWatchedItemStore class |
| 38 | * |
| 39 | * @author Addshore |
| 40 | * @since 1.27 |
| 41 | */ |
| 42 | class WatchedItemStore implements WatchedItemStoreInterface { |
| 43 | |
| 44 | /** |
| 45 | * @internal For use by ServiceWiring |
| 46 | */ |
| 47 | public const CONSTRUCTOR_OPTIONS = [ |
| 48 | MainConfigNames::UpdateRowsPerQuery, |
| 49 | MainConfigNames::WatchlistExpiry, |
| 50 | MainConfigNames::WatchlistExpiryMaxDuration, |
| 51 | MainConfigNames::WatchlistPurgeRate, |
| 52 | ]; |
| 53 | |
| 54 | /** |
| 55 | * @var ILBFactory |
| 56 | */ |
| 57 | private $lbFactory; |
| 58 | |
| 59 | /** |
| 60 | * @var JobQueueGroup |
| 61 | */ |
| 62 | private $queueGroup; |
| 63 | |
| 64 | /** |
| 65 | * @var BagOStuff |
| 66 | */ |
| 67 | private $stash; |
| 68 | |
| 69 | /** |
| 70 | * @var ReadOnlyMode |
| 71 | */ |
| 72 | private $readOnlyMode; |
| 73 | |
| 74 | /** |
| 75 | * @var HashBagOStuff |
| 76 | */ |
| 77 | private $cache; |
| 78 | |
| 79 | /** |
| 80 | * @var HashBagOStuff |
| 81 | */ |
| 82 | private $latestUpdateCache; |
| 83 | |
| 84 | /** |
| 85 | * @var array[][] Looks like $cacheIndex[Namespace ID][Target DB Key][User Id] => 'key' |
| 86 | * The index is needed so that on mass changes all relevant items can be un-cached. |
| 87 | * For example: Clearing a users watchlist of all items or updating notification timestamps |
| 88 | * for all users watching a single target. |
| 89 | * @phan-var array<int,array<string,array<int,string>>> |
| 90 | */ |
| 91 | private $cacheIndex = []; |
| 92 | |
| 93 | /** |
| 94 | * @var callable|null |
| 95 | */ |
| 96 | private $deferredUpdatesAddCallableUpdateCallback; |
| 97 | |
| 98 | /** |
| 99 | * @var int |
| 100 | */ |
| 101 | private $updateRowsPerQuery; |
| 102 | |
| 103 | /** |
| 104 | * @var NamespaceInfo |
| 105 | */ |
| 106 | private $nsInfo; |
| 107 | |
| 108 | /** |
| 109 | * @var RevisionLookup |
| 110 | */ |
| 111 | private $revisionLookup; |
| 112 | |
| 113 | /** |
| 114 | * @var bool Correlates to $wgWatchlistExpiry feature flag. |
| 115 | */ |
| 116 | private $expiryEnabled; |
| 117 | |
| 118 | /** |
| 119 | * @var LinkBatchFactory |
| 120 | */ |
| 121 | private $linkBatchFactory; |
| 122 | |
| 123 | /** @var StatsFactory */ |
| 124 | private $statsFactory; |
| 125 | |
| 126 | /** |
| 127 | * @var string|null Maximum configured relative expiry. |
| 128 | */ |
| 129 | private $maxExpiryDuration; |
| 130 | |
| 131 | /** @var float corresponds to $wgWatchlistPurgeRate value */ |
| 132 | private $watchlistPurgeRate; |
| 133 | |
| 134 | /** |
| 135 | * @param ServiceOptions $options |
| 136 | * @param ILBFactory $lbFactory |
| 137 | * @param JobQueueGroup $queueGroup |
| 138 | * @param BagOStuff $stash |
| 139 | * @param HashBagOStuff $cache |
| 140 | * @param ReadOnlyMode $readOnlyMode |
| 141 | * @param NamespaceInfo $nsInfo |
| 142 | * @param RevisionLookup $revisionLookup |
| 143 | * @param LinkBatchFactory $linkBatchFactory |
| 144 | * @param StatsFactory $statsFactory |
| 145 | */ |
| 146 | public function __construct( |
| 147 | ServiceOptions $options, |
| 148 | ILBFactory $lbFactory, |
| 149 | JobQueueGroup $queueGroup, |
| 150 | BagOStuff $stash, |
| 151 | HashBagOStuff $cache, |
| 152 | ReadOnlyMode $readOnlyMode, |
| 153 | NamespaceInfo $nsInfo, |
| 154 | RevisionLookup $revisionLookup, |
| 155 | LinkBatchFactory $linkBatchFactory, |
| 156 | StatsFactory $statsFactory |
| 157 | ) { |
| 158 | $options->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS ); |
| 159 | $this->updateRowsPerQuery = $options->get( MainConfigNames::UpdateRowsPerQuery ); |
| 160 | $this->expiryEnabled = $options->get( MainConfigNames::WatchlistExpiry ); |
| 161 | $this->maxExpiryDuration = $options->get( MainConfigNames::WatchlistExpiryMaxDuration ); |
| 162 | $this->watchlistPurgeRate = $options->get( MainConfigNames::WatchlistPurgeRate ); |
| 163 | |
| 164 | $this->lbFactory = $lbFactory; |
| 165 | $this->queueGroup = $queueGroup; |
| 166 | $this->stash = $stash; |
| 167 | $this->cache = $cache; |
| 168 | $this->readOnlyMode = $readOnlyMode; |
| 169 | $this->deferredUpdatesAddCallableUpdateCallback = |
| 170 | [ DeferredUpdates::class, 'addCallableUpdate' ]; |
| 171 | $this->nsInfo = $nsInfo; |
| 172 | $this->revisionLookup = $revisionLookup; |
| 173 | $this->linkBatchFactory = $linkBatchFactory; |
| 174 | $this->statsFactory = $statsFactory; |
| 175 | |
| 176 | $this->latestUpdateCache = new HashBagOStuff( [ 'maxKeys' => 3 ] ); |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Overrides the DeferredUpdates::addCallableUpdate callback |
| 181 | * This is intended for use while testing and will fail if MW_PHPUNIT_TEST is not defined. |
| 182 | * |
| 183 | * @param callable $callback |
| 184 | * |
| 185 | * @see DeferredUpdates::addCallableUpdate for callback signiture |
| 186 | * |
| 187 | * @return ScopedCallback to reset the overridden value |
| 188 | */ |
| 189 | public function overrideDeferredUpdatesAddCallableUpdateCallback( callable $callback ) { |
| 190 | if ( !defined( 'MW_PHPUNIT_TEST' ) ) { |
| 191 | throw new LogicException( |
| 192 | 'Cannot override DeferredUpdates::addCallableUpdate callback in operation.' |
| 193 | ); |
| 194 | } |
| 195 | $previousValue = $this->deferredUpdatesAddCallableUpdateCallback; |
| 196 | $this->deferredUpdatesAddCallableUpdateCallback = $callback; |
| 197 | return new ScopedCallback( function () use ( $previousValue ) { |
| 198 | $this->deferredUpdatesAddCallableUpdateCallback = $previousValue; |
| 199 | } ); |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * @param UserIdentity $user |
| 204 | * @param LinkTarget|PageIdentity $target |
| 205 | * @return string |
| 206 | */ |
| 207 | private function getCacheKey( UserIdentity $user, $target ): string { |
| 208 | return $this->cache->makeKey( |
| 209 | (string)$target->getNamespace(), |
| 210 | $target->getDBkey(), |
| 211 | (string)$user->getId() |
| 212 | ); |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * @param WatchedItem $item |
| 217 | */ |
| 218 | private function cache( WatchedItem $item ) { |
| 219 | $user = $item->getUserIdentity(); |
| 220 | $target = $item->getTarget(); |
| 221 | $key = $this->getCacheKey( $user, $target ); |
| 222 | $this->cache->set( $key, $item ); |
| 223 | $this->cacheIndex[$target->getNamespace()][$target->getDBkey()][$user->getId()] = $key; |
| 224 | $this->statsFactory->getCounter( 'WatchedItemStore_cache_total' ) |
| 225 | ->copyToStatsdAt( 'WatchedItemStore.cache' ) |
| 226 | ->increment(); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * @param UserIdentity $user |
| 231 | * @param LinkTarget|PageIdentity $target |
| 232 | */ |
| 233 | private function uncache( UserIdentity $user, $target ) { |
| 234 | $this->cache->delete( $this->getCacheKey( $user, $target ) ); |
| 235 | unset( $this->cacheIndex[$target->getNamespace()][$target->getDBkey()][$user->getId()] ); |
| 236 | $this->statsFactory->getCounter( 'WatchedItemStore_uncache_total' ) |
| 237 | ->copyToStatsdAt( 'WatchedItemStore.uncache' ) |
| 238 | ->increment(); |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * @param LinkTarget|PageIdentity $target |
| 243 | */ |
| 244 | private function uncacheLinkTarget( $target ) { |
| 245 | $this->statsFactory->getCounter( 'WatchedItemStore_uncacheLinkTarget_total' ) |
| 246 | ->copyToStatsdAt( 'WatchedItemStore.uncacheLinkTarget' ) |
| 247 | ->increment(); |
| 248 | if ( !isset( $this->cacheIndex[$target->getNamespace()][$target->getDBkey()] ) ) { |
| 249 | return; |
| 250 | } |
| 251 | |
| 252 | $uncacheLinkTargetItemsTotal = $this->statsFactory |
| 253 | ->getCounter( 'WatchedItemStore_uncacheLinkTarget_items_total' ) |
| 254 | ->copyToStatsdAt( 'WatchedItemStore.uncacheLinkTarget.items' ); |
| 255 | |
| 256 | foreach ( $this->cacheIndex[$target->getNamespace()][$target->getDBkey()] as $key ) { |
| 257 | $uncacheLinkTargetItemsTotal->increment(); |
| 258 | $this->cache->delete( $key ); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * @param UserIdentity $user |
| 264 | */ |
| 265 | private function uncacheUser( UserIdentity $user ) { |
| 266 | $this->statsFactory->getCounter( 'WatchedItemStore_uncacheUser_total' ) |
| 267 | ->copyToStatsdAt( 'WatchedItemStore.uncacheUser' ) |
| 268 | ->increment(); |
| 269 | $uncacheUserItemsTotal = $this->statsFactory->getCounter( 'WatchedItemStore_uncacheUser_items_total' ) |
| 270 | ->copyToStatsdAt( 'WatchedItemStore.uncacheUser.items' ); |
| 271 | |
| 272 | foreach ( $this->cacheIndex as $dbKeyArray ) { |
| 273 | foreach ( $dbKeyArray as $userArray ) { |
| 274 | if ( isset( $userArray[$user->getId()] ) ) { |
| 275 | $uncacheUserItemsTotal->increment(); |
| 276 | $this->cache->delete( $userArray[$user->getId()] ); |
| 277 | } |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | $pageSeenKey = $this->getPageSeenTimestampsKey( $user ); |
| 282 | $this->latestUpdateCache->delete( $pageSeenKey ); |
| 283 | $this->stash->delete( $pageSeenKey ); |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * @param UserIdentity $user |
| 288 | * @param LinkTarget|PageIdentity $target |
| 289 | * |
| 290 | * @return WatchedItem|false |
| 291 | */ |
| 292 | private function getCached( UserIdentity $user, $target ) { |
| 293 | return $this->cache->get( $this->getCacheKey( $user, $target ) ); |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Helper method to deduplicate logic around queries that need to be modified |
| 298 | * if watchlist expiration is enabled |
| 299 | * |
| 300 | * @param SelectQueryBuilder $queryBuilder |
| 301 | * @param IReadableDatabase $db |
| 302 | */ |
| 303 | private function modifyQueryBuilderForExpiry( |
| 304 | SelectQueryBuilder $queryBuilder, |
| 305 | IReadableDatabase $db |
| 306 | ) { |
| 307 | if ( $this->expiryEnabled ) { |
| 308 | $queryBuilder->where( $db->expr( 'we_expiry', '=', null )->or( 'we_expiry', '>', $db->timestamp() ) ); |
| 309 | $queryBuilder->leftJoin( 'watchlist_expiry', null, 'wl_id = we_item' ); |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Deletes ALL watched items for the given user when under |
| 315 | * $updateRowsPerQuery entries exist. |
| 316 | * |
| 317 | * @since 1.30 |
| 318 | * |
| 319 | * @param UserIdentity $user |
| 320 | * |
| 321 | * @return bool true on success, false when too many items are watched |
| 322 | */ |
| 323 | public function clearUserWatchedItems( UserIdentity $user ): bool { |
| 324 | if ( $this->mustClearWatchedItemsUsingJobQueue( $user ) ) { |
| 325 | return false; |
| 326 | } |
| 327 | |
| 328 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 329 | |
| 330 | if ( $this->expiryEnabled ) { |
| 331 | $ticket = $this->lbFactory->getEmptyTransactionTicket( __METHOD__ ); |
| 332 | // First fetch the wl_ids. |
| 333 | $wlIds = $dbw->newSelectQueryBuilder() |
| 334 | ->select( 'wl_id' ) |
| 335 | ->from( 'watchlist' ) |
| 336 | ->where( [ 'wl_user' => $user->getId() ] ) |
| 337 | ->caller( __METHOD__ ) |
| 338 | ->fetchFieldValues(); |
| 339 | if ( $wlIds ) { |
| 340 | // Delete rows from both the watchlist and watchlist_expiry tables. |
| 341 | $dbw->newDeleteQueryBuilder() |
| 342 | ->deleteFrom( 'watchlist' ) |
| 343 | ->where( [ 'wl_id' => $wlIds ] ) |
| 344 | ->caller( __METHOD__ )->execute(); |
| 345 | |
| 346 | $dbw->newDeleteQueryBuilder() |
| 347 | ->deleteFrom( 'watchlist_expiry' ) |
| 348 | ->where( [ 'we_item' => $wlIds ] ) |
| 349 | ->caller( __METHOD__ )->execute(); |
| 350 | } |
| 351 | $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket ); |
| 352 | } else { |
| 353 | $dbw->newDeleteQueryBuilder() |
| 354 | ->deleteFrom( 'watchlist' ) |
| 355 | ->where( [ 'wl_user' => $user->getId() ] ) |
| 356 | ->caller( __METHOD__ )->execute(); |
| 357 | } |
| 358 | |
| 359 | $this->uncacheAllItemsForUser( $user ); |
| 360 | |
| 361 | return true; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * @param UserIdentity $user |
| 366 | * @return bool |
| 367 | */ |
| 368 | public function mustClearWatchedItemsUsingJobQueue( UserIdentity $user ): bool { |
| 369 | return $this->countWatchedItems( $user ) > $this->updateRowsPerQuery; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * @param UserIdentity $user |
| 374 | */ |
| 375 | private function uncacheAllItemsForUser( UserIdentity $user ) { |
| 376 | $userId = $user->getId(); |
| 377 | foreach ( $this->cacheIndex as $ns => $dbKeyIndex ) { |
| 378 | foreach ( $dbKeyIndex as $dbKey => $userIndex ) { |
| 379 | if ( array_key_exists( $userId, $userIndex ) ) { |
| 380 | $this->cache->delete( $userIndex[$userId] ); |
| 381 | unset( $this->cacheIndex[$ns][$dbKey][$userId] ); |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | // Cleanup empty cache keys |
| 387 | foreach ( $this->cacheIndex as $ns => $dbKeyIndex ) { |
| 388 | foreach ( $dbKeyIndex as $dbKey => $userIndex ) { |
| 389 | if ( empty( $this->cacheIndex[$ns][$dbKey] ) ) { |
| 390 | unset( $this->cacheIndex[$ns][$dbKey] ); |
| 391 | } |
| 392 | } |
| 393 | if ( empty( $this->cacheIndex[$ns] ) ) { |
| 394 | unset( $this->cacheIndex[$ns] ); |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | /** |
| 400 | * Queues a job that will clear the users watchlist using the Job Queue. |
| 401 | * |
| 402 | * @since 1.31 |
| 403 | * |
| 404 | * @param UserIdentity $user |
| 405 | */ |
| 406 | public function clearUserWatchedItemsUsingJobQueue( UserIdentity $user ) { |
| 407 | $job = ClearUserWatchlistJob::newForUser( $user, $this->getMaxId() ); |
| 408 | $this->queueGroup->push( $job ); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * @inheritDoc |
| 413 | */ |
| 414 | public function maybeEnqueueWatchlistExpiryJob(): void { |
| 415 | if ( !$this->expiryEnabled ) { |
| 416 | // No need to purge expired entries if there are none |
| 417 | return; |
| 418 | } |
| 419 | |
| 420 | $max = mt_getrandmax(); |
| 421 | if ( mt_rand( 0, $max ) < $max * $this->watchlistPurgeRate ) { |
| 422 | // The higher the watchlist purge rate, the more likely we are to enqueue a job. |
| 423 | $this->queueGroup->lazyPush( new WatchlistExpiryJob() ); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * @since 1.31 |
| 429 | * @return int The maximum current wl_id |
| 430 | */ |
| 431 | public function getMaxId(): int { |
| 432 | return (int)$this->lbFactory->getReplicaDatabase()->newSelectQueryBuilder() |
| 433 | ->select( 'MAX(wl_id)' ) |
| 434 | ->from( 'watchlist' ) |
| 435 | ->caller( __METHOD__ ) |
| 436 | ->fetchField(); |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * @since 1.31 |
| 441 | * @param UserIdentity $user |
| 442 | * @return int |
| 443 | */ |
| 444 | public function countWatchedItems( UserIdentity $user ): int { |
| 445 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 446 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 447 | ->select( 'COUNT(*)' ) |
| 448 | ->from( 'watchlist' ) |
| 449 | ->where( [ 'wl_user' => $user->getId() ] ) |
| 450 | ->caller( __METHOD__ ); |
| 451 | |
| 452 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbr ); |
| 453 | |
| 454 | return (int)$queryBuilder->fetchField(); |
| 455 | } |
| 456 | |
| 457 | /** |
| 458 | * @since 1.27 |
| 459 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 460 | * @return int |
| 461 | */ |
| 462 | public function countWatchers( $target ): int { |
| 463 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 464 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 465 | ->select( 'COUNT(*)' ) |
| 466 | ->from( 'watchlist' ) |
| 467 | ->where( [ |
| 468 | 'wl_namespace' => $target->getNamespace(), |
| 469 | 'wl_title' => $target->getDBkey() |
| 470 | ] ) |
| 471 | ->caller( __METHOD__ ); |
| 472 | |
| 473 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbr ); |
| 474 | |
| 475 | return (int)$queryBuilder->fetchField(); |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * @since 1.27 |
| 480 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 481 | * @param string|int $threshold |
| 482 | * @return int |
| 483 | */ |
| 484 | public function countVisitingWatchers( $target, $threshold ): int { |
| 485 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 486 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 487 | ->select( 'COUNT(*)' ) |
| 488 | ->from( 'watchlist' ) |
| 489 | ->where( [ |
| 490 | 'wl_namespace' => $target->getNamespace(), |
| 491 | 'wl_title' => $target->getDBkey(), |
| 492 | $dbr->expr( 'wl_notificationtimestamp', '>=', $dbr->timestamp( $threshold ) ) |
| 493 | ->or( 'wl_notificationtimestamp', '=', null ) |
| 494 | ] ) |
| 495 | ->caller( __METHOD__ ); |
| 496 | |
| 497 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbr ); |
| 498 | |
| 499 | return (int)$queryBuilder->fetchField(); |
| 500 | } |
| 501 | |
| 502 | /** |
| 503 | * @param UserIdentity $user |
| 504 | * @param LinkTarget[]|PageIdentity[] $titles deprecated passing LinkTarget[] since 1.36 |
| 505 | * @return bool |
| 506 | */ |
| 507 | public function removeWatchBatchForUser( UserIdentity $user, array $titles ): bool { |
| 508 | if ( !$user->isRegistered() || $this->readOnlyMode->isReadOnly() ) { |
| 509 | return false; |
| 510 | } |
| 511 | if ( !$titles ) { |
| 512 | return true; |
| 513 | } |
| 514 | |
| 515 | $rows = $this->getTitleDbKeysGroupedByNamespace( $titles ); |
| 516 | $this->uncacheTitlesForUser( $user, $titles ); |
| 517 | |
| 518 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 519 | $ticket = count( $titles ) > $this->updateRowsPerQuery ? |
| 520 | $this->lbFactory->getEmptyTransactionTicket( __METHOD__ ) : null; |
| 521 | $affectedRows = 0; |
| 522 | |
| 523 | // Batch delete items per namespace. |
| 524 | foreach ( $rows as $namespace => $namespaceTitles ) { |
| 525 | $rowBatches = array_chunk( $namespaceTitles, $this->updateRowsPerQuery ); |
| 526 | foreach ( $rowBatches as $toDelete ) { |
| 527 | // First fetch the wl_ids. |
| 528 | $wlIds = $dbw->newSelectQueryBuilder() |
| 529 | ->select( 'wl_id' ) |
| 530 | ->from( 'watchlist' ) |
| 531 | ->where( |
| 532 | [ |
| 533 | 'wl_user' => $user->getId(), |
| 534 | 'wl_namespace' => $namespace, |
| 535 | 'wl_title' => $toDelete |
| 536 | ] |
| 537 | ) |
| 538 | ->caller( __METHOD__ ) |
| 539 | ->fetchFieldValues(); |
| 540 | |
| 541 | if ( $wlIds ) { |
| 542 | // Delete rows from both the watchlist and watchlist_expiry tables. |
| 543 | $dbw->newDeleteQueryBuilder() |
| 544 | ->deleteFrom( 'watchlist' ) |
| 545 | ->where( [ 'wl_id' => $wlIds ] ) |
| 546 | ->caller( __METHOD__ )->execute(); |
| 547 | $affectedRows += $dbw->affectedRows(); |
| 548 | |
| 549 | if ( $this->expiryEnabled ) { |
| 550 | $dbw->newDeleteQueryBuilder() |
| 551 | ->deleteFrom( 'watchlist_expiry' ) |
| 552 | ->where( [ 'we_item' => $wlIds ] ) |
| 553 | ->caller( __METHOD__ )->execute(); |
| 554 | $affectedRows += $dbw->affectedRows(); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | if ( $ticket ) { |
| 559 | $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket ); |
| 560 | } |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | return (bool)$affectedRows; |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | * @since 1.27 |
| 569 | * @param LinkTarget[]|PageIdentity[] $targets deprecated passing LinkTarget[] since 1.36 |
| 570 | * @param array $options Supported options are: |
| 571 | * - 'minimumWatchers': filter for pages that have at least a minimum number of watchers |
| 572 | * @return array |
| 573 | */ |
| 574 | public function countWatchersMultiple( array $targets, array $options = [] ): array { |
| 575 | $linkTargets = array_map( static function ( $target ) { |
| 576 | if ( !$target instanceof LinkTarget ) { |
| 577 | return new TitleValue( $target->getNamespace(), $target->getDBkey() ); |
| 578 | } |
| 579 | return $target; |
| 580 | }, $targets ); |
| 581 | $lb = $this->linkBatchFactory->newLinkBatch( $linkTargets ); |
| 582 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 583 | $queryBuilder = $dbr->newSelectQueryBuilder(); |
| 584 | $queryBuilder |
| 585 | ->select( [ 'wl_title', 'wl_namespace', 'watchers' => 'COUNT(*)' ] ) |
| 586 | ->from( 'watchlist' ) |
| 587 | ->where( [ $lb->constructSet( 'wl', $dbr ) ] ) |
| 588 | ->groupBy( [ 'wl_namespace', 'wl_title' ] ) |
| 589 | ->caller( __METHOD__ ); |
| 590 | |
| 591 | if ( array_key_exists( 'minimumWatchers', $options ) ) { |
| 592 | $queryBuilder->having( 'COUNT(*) >= ' . (int)$options['minimumWatchers'] ); |
| 593 | } |
| 594 | |
| 595 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbr ); |
| 596 | |
| 597 | $res = $queryBuilder->fetchResultSet(); |
| 598 | |
| 599 | $watchCounts = []; |
| 600 | foreach ( $targets as $linkTarget ) { |
| 601 | $watchCounts[$linkTarget->getNamespace()][$linkTarget->getDBkey()] = 0; |
| 602 | } |
| 603 | |
| 604 | foreach ( $res as $row ) { |
| 605 | $watchCounts[$row->wl_namespace][$row->wl_title] = (int)$row->watchers; |
| 606 | } |
| 607 | |
| 608 | return $watchCounts; |
| 609 | } |
| 610 | |
| 611 | /** |
| 612 | * @since 1.27 |
| 613 | * @param array $targetsWithVisitThresholds array of LinkTarget[]|PageIdentity[] (not type |
| 614 | * hinted since it annoys phan) - deprecated passing LinkTarget[] since 1.36 |
| 615 | * @param int|null $minimumWatchers |
| 616 | * @return int[][] two dimensional array, first is namespace, second is database key, |
| 617 | * value is the number of watchers |
| 618 | */ |
| 619 | public function countVisitingWatchersMultiple( |
| 620 | array $targetsWithVisitThresholds, |
| 621 | $minimumWatchers = null |
| 622 | ): array { |
| 623 | if ( $targetsWithVisitThresholds === [] ) { |
| 624 | // No titles requested => no results returned |
| 625 | return []; |
| 626 | } |
| 627 | |
| 628 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 629 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 630 | ->select( [ 'wl_namespace', 'wl_title', 'watchers' => 'COUNT(*)' ] ) |
| 631 | ->from( 'watchlist' ) |
| 632 | ->where( [ $this->getVisitingWatchersCondition( $dbr, $targetsWithVisitThresholds ) ] ) |
| 633 | ->groupBy( [ 'wl_namespace', 'wl_title' ] ) |
| 634 | ->caller( __METHOD__ ); |
| 635 | if ( $minimumWatchers !== null ) { |
| 636 | $queryBuilder->having( 'COUNT(*) >= ' . (int)$minimumWatchers ); |
| 637 | } |
| 638 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbr ); |
| 639 | |
| 640 | $res = $queryBuilder->fetchResultSet(); |
| 641 | |
| 642 | $watcherCounts = []; |
| 643 | foreach ( $targetsWithVisitThresholds as [ $target ] ) { |
| 644 | /** @var LinkTarget|PageIdentity $target */ |
| 645 | $watcherCounts[$target->getNamespace()][$target->getDBkey()] = 0; |
| 646 | } |
| 647 | |
| 648 | foreach ( $res as $row ) { |
| 649 | $watcherCounts[$row->wl_namespace][$row->wl_title] = (int)$row->watchers; |
| 650 | } |
| 651 | |
| 652 | return $watcherCounts; |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Generates condition for the query used in a batch count visiting watchers. |
| 657 | * |
| 658 | * @param IReadableDatabase $db |
| 659 | * @param array $targetsWithVisitThresholds array of pairs (LinkTarget|PageIdentity, |
| 660 | * last visit threshold) - deprecated passing LinkTarget since 1.36 |
| 661 | * @return string |
| 662 | */ |
| 663 | private function getVisitingWatchersCondition( |
| 664 | IReadableDatabase $db, |
| 665 | array $targetsWithVisitThresholds |
| 666 | ): string { |
| 667 | $missingTargets = []; |
| 668 | $namespaceConds = []; |
| 669 | foreach ( $targetsWithVisitThresholds as [ $target, $threshold ] ) { |
| 670 | if ( $threshold === null ) { |
| 671 | $missingTargets[] = $target; |
| 672 | continue; |
| 673 | } |
| 674 | /** @var LinkTarget|PageIdentity $target */ |
| 675 | $namespaceConds[$target->getNamespace()][] = $db->expr( 'wl_title', '=', $target->getDBkey() ) |
| 676 | ->andExpr( |
| 677 | $db->expr( 'wl_notificationtimestamp', '>=', $db->timestamp( $threshold ) ) |
| 678 | ->or( 'wl_notificationtimestamp', '=', null ) |
| 679 | ); |
| 680 | } |
| 681 | |
| 682 | $conds = []; |
| 683 | foreach ( $namespaceConds as $namespace => $pageConds ) { |
| 684 | $conds[] = $db->makeList( [ |
| 685 | 'wl_namespace = ' . $namespace, |
| 686 | '(' . $db->makeList( $pageConds, LIST_OR ) . ')' |
| 687 | ], LIST_AND ); |
| 688 | } |
| 689 | |
| 690 | if ( $missingTargets ) { |
| 691 | $lb = $this->linkBatchFactory->newLinkBatch( $missingTargets ); |
| 692 | $conds[] = $lb->constructSet( 'wl', $db ); |
| 693 | } |
| 694 | |
| 695 | return $db->makeList( $conds, LIST_OR ); |
| 696 | } |
| 697 | |
| 698 | /** |
| 699 | * @since 1.27 |
| 700 | * @param UserIdentity $user |
| 701 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 702 | * @return WatchedItem|false |
| 703 | */ |
| 704 | public function getWatchedItem( UserIdentity $user, $target ) { |
| 705 | if ( !$user->isRegistered() ) { |
| 706 | return false; |
| 707 | } |
| 708 | |
| 709 | $cached = $this->getCached( $user, $target ); |
| 710 | if ( $cached && !$cached->isExpired() ) { |
| 711 | $this->statsFactory->getCounter( 'WatchedItemStore_getWatchedItem_accesses_total' ) |
| 712 | ->setLabel( 'status', 'hit' ) |
| 713 | ->copyToStatsdAt( 'WatchedItemStore.getWatchedItem.cached' ) |
| 714 | ->increment(); |
| 715 | return $cached; |
| 716 | } |
| 717 | $this->statsFactory->getCounter( 'WatchedItemStore_getWatchedItem_accesses_total' ) |
| 718 | ->setLabel( 'status', 'miss' ) |
| 719 | ->copyToStatsdAt( 'WatchedItemStore.getWatchedItem.load' ) |
| 720 | ->increment(); |
| 721 | return $this->loadWatchedItem( $user, $target ); |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * @since 1.27 |
| 726 | * @param UserIdentity $user |
| 727 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 728 | * @return WatchedItem|false |
| 729 | */ |
| 730 | public function loadWatchedItem( UserIdentity $user, $target ) { |
| 731 | $item = $this->loadWatchedItemsBatch( $user, [ $target ] ); |
| 732 | return $item ? $item[0] : false; |
| 733 | } |
| 734 | |
| 735 | /** |
| 736 | * @since 1.36 |
| 737 | * @param UserIdentity $user |
| 738 | * @param LinkTarget[]|PageIdentity[] $targets deprecated passing LinkTarget[] since 1.36 |
| 739 | * @return WatchedItem[]|false |
| 740 | */ |
| 741 | public function loadWatchedItemsBatch( UserIdentity $user, array $targets ) { |
| 742 | // Only registered user can have a watchlist |
| 743 | if ( !$user->isRegistered() ) { |
| 744 | return false; |
| 745 | } |
| 746 | |
| 747 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 748 | |
| 749 | $rows = $this->fetchWatchedItems( |
| 750 | $dbr, |
| 751 | $user, |
| 752 | [ 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ], |
| 753 | [], |
| 754 | $targets |
| 755 | ); |
| 756 | |
| 757 | if ( !$rows ) { |
| 758 | return false; |
| 759 | } |
| 760 | |
| 761 | $items = []; |
| 762 | foreach ( $rows as $row ) { |
| 763 | // TODO: convert to PageIdentity |
| 764 | $target = new TitleValue( (int)$row->wl_namespace, $row->wl_title ); |
| 765 | $item = $this->getWatchedItemFromRow( $user, $target, $row ); |
| 766 | $this->cache( $item ); |
| 767 | $items[] = $item; |
| 768 | } |
| 769 | |
| 770 | return $items; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * @since 1.27 |
| 775 | * @param UserIdentity $user |
| 776 | * @param array $options Supported options are: |
| 777 | * - 'forWrite': whether to use the primary database instead of a replica |
| 778 | * - 'sort': how to sort the titles, either SORT_ASC or SORT_DESC |
| 779 | * - 'sortByExpiry': whether to also sort results by expiration, with temporarily watched titles |
| 780 | * above titles watched indefinitely and titles expiring soonest at the top |
| 781 | * @return WatchedItem[] |
| 782 | */ |
| 783 | public function getWatchedItemsForUser( UserIdentity $user, array $options = [] ): array { |
| 784 | $options += [ 'forWrite' => false ]; |
| 785 | $vars = [ 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ]; |
| 786 | $orderBy = []; |
| 787 | if ( $options['forWrite'] ) { |
| 788 | $db = $this->lbFactory->getPrimaryDatabase(); |
| 789 | } else { |
| 790 | $db = $this->lbFactory->getReplicaDatabase(); |
| 791 | } |
| 792 | if ( array_key_exists( 'sort', $options ) ) { |
| 793 | Assert::parameter( |
| 794 | ( in_array( $options['sort'], [ self::SORT_ASC, self::SORT_DESC ] ) ), |
| 795 | '$options[\'sort\']', |
| 796 | 'must be SORT_ASC or SORT_DESC' |
| 797 | ); |
| 798 | $orderBy[] = "wl_namespace {$options['sort']}"; |
| 799 | if ( $this->expiryEnabled |
| 800 | && array_key_exists( 'sortByExpiry', $options ) |
| 801 | && $options['sortByExpiry'] |
| 802 | ) { |
| 803 | // Add `wl_has_expiry` column to allow sorting by watched titles that have an expiration date first. |
| 804 | $vars['wl_has_expiry'] = $db->conditional( 'we_expiry IS NULL', '0', '1' ); |
| 805 | // Display temporarily watched titles first. |
| 806 | // Order by expiration date, with the titles that will expire soonest at the top. |
| 807 | $orderBy[] = "wl_has_expiry DESC"; |
| 808 | $orderBy[] = "we_expiry ASC"; |
| 809 | } |
| 810 | |
| 811 | $orderBy[] = "wl_title {$options['sort']}"; |
| 812 | } |
| 813 | |
| 814 | $res = $this->fetchWatchedItems( |
| 815 | $db, |
| 816 | $user, |
| 817 | $vars, |
| 818 | $orderBy |
| 819 | ); |
| 820 | |
| 821 | $watchedItems = []; |
| 822 | foreach ( $res as $row ) { |
| 823 | // TODO: convert to PageIdentity |
| 824 | $target = new TitleValue( (int)$row->wl_namespace, $row->wl_title ); |
| 825 | // @todo: Should we add these to the process cache? |
| 826 | $watchedItems[] = $this->getWatchedItemFromRow( $user, $target, $row ); |
| 827 | } |
| 828 | |
| 829 | return $watchedItems; |
| 830 | } |
| 831 | |
| 832 | /** |
| 833 | * Construct a new WatchedItem given a row from watchlist/watchlist_expiry. |
| 834 | * @param UserIdentity $user |
| 835 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 836 | * @param \stdClass $row |
| 837 | * @return WatchedItem |
| 838 | */ |
| 839 | private function getWatchedItemFromRow( |
| 840 | UserIdentity $user, |
| 841 | $target, |
| 842 | stdClass $row |
| 843 | ): WatchedItem { |
| 844 | return new WatchedItem( |
| 845 | $user, |
| 846 | $target, |
| 847 | $this->getLatestNotificationTimestamp( |
| 848 | $row->wl_notificationtimestamp, $user, $target ), |
| 849 | wfTimestampOrNull( TS_ISO_8601, $row->we_expiry ?? null ) |
| 850 | ); |
| 851 | } |
| 852 | |
| 853 | /** |
| 854 | * Fetches either a single or all watched items for the given user, or a specific set of items. |
| 855 | * If a $target is given, IDatabase::selectRow() is called, otherwise select(). |
| 856 | * If $wgWatchlistExpiry is enabled, expired items are not returned. |
| 857 | * |
| 858 | * @param IReadableDatabase $db |
| 859 | * @param UserIdentity $user |
| 860 | * @param array $vars we_expiry is added when $wgWatchlistExpiry is enabled. |
| 861 | * @param array $orderBy array of columns |
| 862 | * @param LinkTarget|LinkTarget[]|PageIdentity|PageIdentity[]|null $target null if selecting all |
| 863 | * watched items - deprecated passing LinkTarget or LinkTarget[] since 1.36 |
| 864 | * @return IResultWrapper|\stdClass|false |
| 865 | */ |
| 866 | private function fetchWatchedItems( |
| 867 | IReadableDatabase $db, |
| 868 | UserIdentity $user, |
| 869 | array $vars, |
| 870 | array $orderBy = [], |
| 871 | $target = null |
| 872 | ) { |
| 873 | $dbMethod = 'select'; |
| 874 | $queryBuilder = $db->newSelectQueryBuilder() |
| 875 | ->select( $vars ) |
| 876 | ->from( 'watchlist' ) |
| 877 | ->where( [ 'wl_user' => $user->getId() ] ) |
| 878 | ->caller( __METHOD__ ); |
| 879 | if ( $target ) { |
| 880 | if ( $target instanceof LinkTarget || $target instanceof PageIdentity ) { |
| 881 | $queryBuilder->where( [ |
| 882 | 'wl_namespace' => $target->getNamespace(), |
| 883 | 'wl_title' => $target->getDBkey(), |
| 884 | ] ); |
| 885 | $dbMethod = 'selectRow'; |
| 886 | } else { |
| 887 | $titleConds = []; |
| 888 | foreach ( $target as $linkTarget ) { |
| 889 | $titleConds[] = $db->makeList( |
| 890 | [ |
| 891 | 'wl_namespace' => $linkTarget->getNamespace(), |
| 892 | 'wl_title' => $linkTarget->getDBkey(), |
| 893 | ], |
| 894 | $db::LIST_AND |
| 895 | ); |
| 896 | } |
| 897 | $queryBuilder->where( $db->makeList( $titleConds, $db::LIST_OR ) ); |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $db ); |
| 902 | if ( $this->expiryEnabled ) { |
| 903 | $queryBuilder->field( 'we_expiry' ); |
| 904 | } |
| 905 | if ( $orderBy ) { |
| 906 | $queryBuilder->orderBy( $orderBy ); |
| 907 | } |
| 908 | |
| 909 | if ( $dbMethod == 'selectRow' ) { |
| 910 | return $queryBuilder->fetchRow(); |
| 911 | } |
| 912 | return $queryBuilder->fetchResultSet(); |
| 913 | } |
| 914 | |
| 915 | /** |
| 916 | * @since 1.27 |
| 917 | * @param UserIdentity $user |
| 918 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 919 | * @return bool |
| 920 | */ |
| 921 | public function isWatched( UserIdentity $user, $target ): bool { |
| 922 | return (bool)$this->getWatchedItem( $user, $target ); |
| 923 | } |
| 924 | |
| 925 | /** |
| 926 | * Check if the user is temporarily watching the page. |
| 927 | * @since 1.35 |
| 928 | * @param UserIdentity $user |
| 929 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 930 | * @return bool |
| 931 | */ |
| 932 | public function isTempWatched( UserIdentity $user, $target ): bool { |
| 933 | $item = $this->getWatchedItem( $user, $target ); |
| 934 | return $item && $item->getExpiry(); |
| 935 | } |
| 936 | |
| 937 | /** |
| 938 | * @since 1.27 |
| 939 | * @param UserIdentity $user |
| 940 | * @param LinkTarget[] $targets |
| 941 | * @return (string|null|false)[][] two dimensional array, first is namespace, second is database key, |
| 942 | * value is the notification timestamp or null, or false if not available |
| 943 | */ |
| 944 | public function getNotificationTimestampsBatch( UserIdentity $user, array $targets ): array { |
| 945 | $timestamps = []; |
| 946 | foreach ( $targets as $target ) { |
| 947 | $timestamps[$target->getNamespace()][$target->getDBkey()] = false; |
| 948 | } |
| 949 | |
| 950 | if ( !$user->isRegistered() ) { |
| 951 | return $timestamps; |
| 952 | } |
| 953 | |
| 954 | $targetsToLoad = []; |
| 955 | foreach ( $targets as $target ) { |
| 956 | $cachedItem = $this->getCached( $user, $target ); |
| 957 | if ( $cachedItem ) { |
| 958 | $timestamps[$target->getNamespace()][$target->getDBkey()] = |
| 959 | $cachedItem->getNotificationTimestamp(); |
| 960 | } else { |
| 961 | $targetsToLoad[] = $target; |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | if ( !$targetsToLoad ) { |
| 966 | return $timestamps; |
| 967 | } |
| 968 | |
| 969 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 970 | |
| 971 | $lb = $this->linkBatchFactory->newLinkBatch( $targetsToLoad ); |
| 972 | $res = $dbr->newSelectQueryBuilder() |
| 973 | ->select( [ 'wl_namespace', 'wl_title', 'wl_notificationtimestamp' ] ) |
| 974 | ->from( 'watchlist' ) |
| 975 | ->where( [ |
| 976 | $lb->constructSet( 'wl', $dbr ), |
| 977 | 'wl_user' => $user->getId(), |
| 978 | ] ) |
| 979 | ->caller( __METHOD__ ) |
| 980 | ->fetchResultSet(); |
| 981 | |
| 982 | foreach ( $res as $row ) { |
| 983 | // TODO: convert to PageIdentity |
| 984 | $target = new TitleValue( (int)$row->wl_namespace, $row->wl_title ); |
| 985 | $timestamps[$row->wl_namespace][$row->wl_title] = |
| 986 | $this->getLatestNotificationTimestamp( |
| 987 | $row->wl_notificationtimestamp, $user, $target ); |
| 988 | } |
| 989 | |
| 990 | return $timestamps; |
| 991 | } |
| 992 | |
| 993 | /** |
| 994 | * @since 1.27 Method added. |
| 995 | * @since 1.35 Accepts $expiry parameter. |
| 996 | * @param UserIdentity $user |
| 997 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 998 | * @param string|null $expiry Optional expiry in any format acceptable to wfTimestamp(). |
| 999 | * null will not create an expiry, or leave it unchanged should one already exist. |
| 1000 | */ |
| 1001 | public function addWatch( UserIdentity $user, $target, ?string $expiry = null ) { |
| 1002 | $this->addWatchBatchForUser( $user, [ $target ], $expiry ); |
| 1003 | |
| 1004 | if ( $this->expiryEnabled && !$expiry ) { |
| 1005 | // When re-watching a page with a null $expiry, any existing expiry is left unchanged. |
| 1006 | // However we must re-fetch the preexisting expiry or else the cached WatchedItem will |
| 1007 | // incorrectly have a null expiry. Note that loadWatchedItem() does the caching. |
| 1008 | // See T259379 |
| 1009 | $this->loadWatchedItem( $user, $target ); |
| 1010 | } else { |
| 1011 | // Create a new WatchedItem and add it to the process cache. |
| 1012 | // In this case we don't need to re-fetch the expiry. |
| 1013 | $expiry = ExpiryDef::normalizeUsingMaxExpiry( $expiry, $this->maxExpiryDuration, TS_ISO_8601 ); |
| 1014 | $item = new WatchedItem( |
| 1015 | $user, |
| 1016 | $target, |
| 1017 | null, |
| 1018 | $expiry |
| 1019 | ); |
| 1020 | $this->cache( $item ); |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | /** |
| 1025 | * Add multiple items to the user's watchlist. |
| 1026 | * If you know you're adding a single page (and/or its talk page) use self::addWatch(), |
| 1027 | * since it will add the WatchedItem to the process cache. |
| 1028 | * |
| 1029 | * @since 1.27 Method added. |
| 1030 | * @since 1.35 Accepts $expiry parameter. |
| 1031 | * @param UserIdentity $user |
| 1032 | * @param LinkTarget[] $targets |
| 1033 | * @param string|null $expiry Optional expiry in a format acceptable to wfTimestamp(), |
| 1034 | * null will not create expiries, or leave them unchanged should they already exist. |
| 1035 | * @return bool Whether database transactions were performed. |
| 1036 | */ |
| 1037 | public function addWatchBatchForUser( |
| 1038 | UserIdentity $user, |
| 1039 | array $targets, |
| 1040 | ?string $expiry = null |
| 1041 | ): bool { |
| 1042 | // Only registered user can have a watchlist |
| 1043 | if ( !$user->isRegistered() || $this->readOnlyMode->isReadOnly() ) { |
| 1044 | return false; |
| 1045 | } |
| 1046 | |
| 1047 | if ( !$targets ) { |
| 1048 | return true; |
| 1049 | } |
| 1050 | $expiry = ExpiryDef::normalizeUsingMaxExpiry( $expiry, $this->maxExpiryDuration, TS_ISO_8601 ); |
| 1051 | $rows = []; |
| 1052 | foreach ( $targets as $target ) { |
| 1053 | $rows[] = [ |
| 1054 | 'wl_user' => $user->getId(), |
| 1055 | 'wl_namespace' => $target->getNamespace(), |
| 1056 | 'wl_title' => $target->getDBkey(), |
| 1057 | 'wl_notificationtimestamp' => null, |
| 1058 | ]; |
| 1059 | $this->uncache( $user, $target ); |
| 1060 | } |
| 1061 | |
| 1062 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1063 | $ticket = count( $targets ) > $this->updateRowsPerQuery ? |
| 1064 | $this->lbFactory->getEmptyTransactionTicket( __METHOD__ ) : null; |
| 1065 | $affectedRows = 0; |
| 1066 | $rowBatches = array_chunk( $rows, $this->updateRowsPerQuery ); |
| 1067 | foreach ( $rowBatches as $toInsert ) { |
| 1068 | // Use INSERT IGNORE to avoid overwriting the notification timestamp |
| 1069 | // if there's already an entry for this page |
| 1070 | $dbw->newInsertQueryBuilder() |
| 1071 | ->insertInto( 'watchlist' ) |
| 1072 | ->ignore() |
| 1073 | ->rows( $toInsert ) |
| 1074 | ->caller( __METHOD__ )->execute(); |
| 1075 | $affectedRows += $dbw->affectedRows(); |
| 1076 | |
| 1077 | if ( $this->expiryEnabled ) { |
| 1078 | $affectedRows += $this->updateOrDeleteExpiries( $dbw, $user->getId(), $toInsert, $expiry ); |
| 1079 | } |
| 1080 | |
| 1081 | if ( $ticket ) { |
| 1082 | $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket ); |
| 1083 | } |
| 1084 | } |
| 1085 | |
| 1086 | return (bool)$affectedRows; |
| 1087 | } |
| 1088 | |
| 1089 | /** |
| 1090 | * Insert/update expiries, or delete them if the expiry is 'infinity'. |
| 1091 | * |
| 1092 | * @param IDatabase $dbw |
| 1093 | * @param int $userId |
| 1094 | * @param array $rows |
| 1095 | * @param string|null $expiry |
| 1096 | * @return int Number of affected rows. |
| 1097 | */ |
| 1098 | private function updateOrDeleteExpiries( |
| 1099 | IDatabase $dbw, |
| 1100 | int $userId, |
| 1101 | array $rows, |
| 1102 | ?string $expiry = null |
| 1103 | ): int { |
| 1104 | if ( !$expiry ) { |
| 1105 | // if expiry is null (shouldn't change), 0 rows affected. |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | // Build the giant `(...) OR (...)` part to be used with WHERE. |
| 1110 | $conds = []; |
| 1111 | foreach ( $rows as $row ) { |
| 1112 | $conds[] = $dbw->makeList( |
| 1113 | [ |
| 1114 | 'wl_user' => $userId, |
| 1115 | 'wl_namespace' => $row['wl_namespace'], |
| 1116 | 'wl_title' => $row['wl_title'] |
| 1117 | ], |
| 1118 | $dbw::LIST_AND |
| 1119 | ); |
| 1120 | } |
| 1121 | $cond = $dbw->makeList( $conds, $dbw::LIST_OR ); |
| 1122 | |
| 1123 | if ( wfIsInfinity( $expiry ) ) { |
| 1124 | // Rows should be deleted rather than updated. |
| 1125 | $dbw->deleteJoin( |
| 1126 | 'watchlist_expiry', |
| 1127 | 'watchlist', |
| 1128 | 'we_item', |
| 1129 | 'wl_id', |
| 1130 | [ $cond ], |
| 1131 | __METHOD__ |
| 1132 | ); |
| 1133 | |
| 1134 | return $dbw->affectedRows(); |
| 1135 | } |
| 1136 | |
| 1137 | return $this->updateExpiries( $dbw, $expiry, $cond ); |
| 1138 | } |
| 1139 | |
| 1140 | /** |
| 1141 | * Update the expiries for items found with the given $cond. |
| 1142 | * @param IDatabase $dbw |
| 1143 | * @param string $expiry |
| 1144 | * @param string $cond |
| 1145 | * @return int Number of affected rows. |
| 1146 | */ |
| 1147 | private function updateExpiries( IDatabase $dbw, string $expiry, string $cond ): int { |
| 1148 | // First fetch the wl_ids from the watchlist table. |
| 1149 | // We'd prefer to do a INSERT/SELECT in the same query with IDatabase::insertSelect(), |
| 1150 | // but it doesn't allow us to use the "ON DUPLICATE KEY UPDATE" clause. |
| 1151 | $wlIds = $dbw->newSelectQueryBuilder() |
| 1152 | ->select( 'wl_id' ) |
| 1153 | ->from( 'watchlist' ) |
| 1154 | ->where( $cond ) |
| 1155 | ->caller( __METHOD__ ) |
| 1156 | ->fetchFieldValues(); |
| 1157 | |
| 1158 | if ( !$wlIds ) { |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | $expiry = $dbw->timestamp( $expiry ); |
| 1163 | $weRows = []; |
| 1164 | foreach ( $wlIds as $wlId ) { |
| 1165 | $weRows[] = [ |
| 1166 | 'we_item' => $wlId, |
| 1167 | 'we_expiry' => $expiry |
| 1168 | ]; |
| 1169 | } |
| 1170 | |
| 1171 | // Insert into watchlist_expiry, updating the expiry for duplicate rows. |
| 1172 | $dbw->newInsertQueryBuilder() |
| 1173 | ->insertInto( 'watchlist_expiry' ) |
| 1174 | ->rows( $weRows ) |
| 1175 | ->onDuplicateKeyUpdate() |
| 1176 | ->uniqueIndexFields( [ 'we_item' ] ) |
| 1177 | ->set( [ 'we_expiry' => $expiry ] ) |
| 1178 | ->caller( __METHOD__ )->execute(); |
| 1179 | |
| 1180 | return $dbw->affectedRows(); |
| 1181 | } |
| 1182 | |
| 1183 | /** |
| 1184 | * @since 1.27 |
| 1185 | * @param UserIdentity $user |
| 1186 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 1187 | * @return bool |
| 1188 | */ |
| 1189 | public function removeWatch( UserIdentity $user, $target ): bool { |
| 1190 | return $this->removeWatchBatchForUser( $user, [ $target ] ); |
| 1191 | } |
| 1192 | |
| 1193 | /** |
| 1194 | * Set the "last viewed" timestamps for certain titles on a user's watchlist. |
| 1195 | * |
| 1196 | * If the $targets parameter is omitted or set to [], this method simply wraps |
| 1197 | * resetAllNotificationTimestampsForUser(), and in that case you should instead call that method |
| 1198 | * directly; support for omitting $targets is for backwards compatibility. |
| 1199 | * |
| 1200 | * If $targets is omitted or set to [], timestamps will be updated for every title on the user's |
| 1201 | * watchlist, and this will be done through a DeferredUpdate. If $targets is a non-empty array, |
| 1202 | * only the specified titles will be updated, and this will be done immediately (not deferred). |
| 1203 | * |
| 1204 | * @since 1.27 |
| 1205 | * @param UserIdentity $user |
| 1206 | * @param string|int $timestamp Value to set the "last viewed" timestamp to (null to clear) |
| 1207 | * @param LinkTarget[] $targets Titles to set the timestamp for; [] means the entire watchlist |
| 1208 | * @return bool |
| 1209 | */ |
| 1210 | public function setNotificationTimestampsForUser( |
| 1211 | UserIdentity $user, |
| 1212 | $timestamp, |
| 1213 | array $targets = [] |
| 1214 | ): bool { |
| 1215 | // Only registered user can have a watchlist |
| 1216 | if ( !$user->isRegistered() || $this->readOnlyMode->isReadOnly() ) { |
| 1217 | return false; |
| 1218 | } |
| 1219 | |
| 1220 | if ( !$targets ) { |
| 1221 | // Backwards compatibility |
| 1222 | $this->resetAllNotificationTimestampsForUser( $user, $timestamp ); |
| 1223 | return true; |
| 1224 | } |
| 1225 | |
| 1226 | $rows = $this->getTitleDbKeysGroupedByNamespace( $targets ); |
| 1227 | |
| 1228 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1229 | if ( $timestamp !== null ) { |
| 1230 | $timestamp = $dbw->timestamp( $timestamp ); |
| 1231 | } |
| 1232 | $ticket = $this->lbFactory->getEmptyTransactionTicket( __METHOD__ ); |
| 1233 | $affectedSinceWait = 0; |
| 1234 | |
| 1235 | // Batch update items per namespace |
| 1236 | foreach ( $rows as $namespace => $namespaceTitles ) { |
| 1237 | $rowBatches = array_chunk( $namespaceTitles, $this->updateRowsPerQuery ); |
| 1238 | foreach ( $rowBatches as $toUpdate ) { |
| 1239 | // First fetch the wl_ids. |
| 1240 | $wlIds = $dbw->newSelectQueryBuilder() |
| 1241 | ->select( 'wl_id' ) |
| 1242 | ->from( 'watchlist' ) |
| 1243 | ->where( [ |
| 1244 | 'wl_user' => $user->getId(), |
| 1245 | 'wl_namespace' => $namespace, |
| 1246 | 'wl_title' => $toUpdate |
| 1247 | ] ) |
| 1248 | ->caller( __METHOD__ ) |
| 1249 | ->fetchFieldValues(); |
| 1250 | if ( $wlIds ) { |
| 1251 | $wlIds = array_map( 'intval', $wlIds ); |
| 1252 | $dbw->newUpdateQueryBuilder() |
| 1253 | ->update( 'watchlist' ) |
| 1254 | ->set( [ 'wl_notificationtimestamp' => $timestamp ] ) |
| 1255 | ->where( [ 'wl_id' => $wlIds ] ) |
| 1256 | ->caller( __METHOD__ )->execute(); |
| 1257 | |
| 1258 | $affectedSinceWait += $dbw->affectedRows(); |
| 1259 | // Wait for replication every time we've touched updateRowsPerQuery rows |
| 1260 | if ( $affectedSinceWait >= $this->updateRowsPerQuery ) { |
| 1261 | $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket ); |
| 1262 | $affectedSinceWait = 0; |
| 1263 | } |
| 1264 | } |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | $this->uncacheUser( $user ); |
| 1269 | |
| 1270 | return true; |
| 1271 | } |
| 1272 | |
| 1273 | /** |
| 1274 | * @param string|null $timestamp |
| 1275 | * @param UserIdentity $user |
| 1276 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 1277 | * @return bool|string|null |
| 1278 | */ |
| 1279 | public function getLatestNotificationTimestamp( |
| 1280 | $timestamp, |
| 1281 | UserIdentity $user, |
| 1282 | $target |
| 1283 | ) { |
| 1284 | $timestamp = wfTimestampOrNull( TS_MW, $timestamp ); |
| 1285 | if ( $timestamp === null ) { |
| 1286 | return null; // no notification |
| 1287 | } |
| 1288 | |
| 1289 | $seenTimestamps = $this->getPageSeenTimestamps( $user ); |
| 1290 | if ( $seenTimestamps ) { |
| 1291 | $seenKey = $this->getPageSeenKey( $target ); |
| 1292 | if ( isset( $seenTimestamps[$seenKey] ) && $seenTimestamps[$seenKey] >= $timestamp ) { |
| 1293 | // If a reset job did not yet run, then the "seen" timestamp will be higher |
| 1294 | return null; |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | return $timestamp; |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * Schedule a DeferredUpdate that sets all of the "last viewed" timestamps for a given user |
| 1303 | * to the same value. |
| 1304 | * @param UserIdentity $user |
| 1305 | * @param string|int|null $timestamp Value to set all timestamps to, null to clear them |
| 1306 | */ |
| 1307 | public function resetAllNotificationTimestampsForUser( UserIdentity $user, $timestamp = null ) { |
| 1308 | // Only registered user can have a watchlist |
| 1309 | if ( !$user->isRegistered() ) { |
| 1310 | return; |
| 1311 | } |
| 1312 | |
| 1313 | // If the page is watched by the user (or may be watched), update the timestamp |
| 1314 | $job = new ClearWatchlistNotificationsJob( [ |
| 1315 | 'userId' => $user->getId(), 'timestamp' => $timestamp, 'casTime' => time() |
| 1316 | ] ); |
| 1317 | |
| 1318 | // Try to run this post-send |
| 1319 | // Calls DeferredUpdates::addCallableUpdate in normal operation |
| 1320 | call_user_func( |
| 1321 | $this->deferredUpdatesAddCallableUpdateCallback, |
| 1322 | static function () use ( $job ) { |
| 1323 | $job->run(); |
| 1324 | } |
| 1325 | ); |
| 1326 | } |
| 1327 | |
| 1328 | /** |
| 1329 | * Update wl_notificationtimestamp for all watching users except the editor |
| 1330 | * @since 1.27 |
| 1331 | * @param UserIdentity $editor |
| 1332 | * @param LinkTarget|PageIdentity $target deprecated passing LinkTarget since 1.36 |
| 1333 | * @param string|int $timestamp |
| 1334 | * @return int[] |
| 1335 | */ |
| 1336 | public function updateNotificationTimestamp( |
| 1337 | UserIdentity $editor, |
| 1338 | $target, |
| 1339 | $timestamp |
| 1340 | ): array { |
| 1341 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1342 | $queryBuilder = $dbw->newSelectQueryBuilder() |
| 1343 | ->select( [ 'wl_id', 'wl_user' ] ) |
| 1344 | ->from( 'watchlist' ) |
| 1345 | ->where( |
| 1346 | [ |
| 1347 | 'wl_user != ' . $editor->getId(), |
| 1348 | 'wl_namespace' => $target->getNamespace(), |
| 1349 | 'wl_title' => $target->getDBkey(), |
| 1350 | 'wl_notificationtimestamp' => null, |
| 1351 | ] |
| 1352 | ) |
| 1353 | ->caller( __METHOD__ ); |
| 1354 | |
| 1355 | $this->modifyQueryBuilderForExpiry( $queryBuilder, $dbw ); |
| 1356 | |
| 1357 | $res = $queryBuilder->fetchResultSet(); |
| 1358 | $watchers = []; |
| 1359 | $wlIds = []; |
| 1360 | foreach ( $res as $row ) { |
| 1361 | $watchers[] = (int)$row->wl_user; |
| 1362 | $wlIds[] = (int)$row->wl_id; |
| 1363 | } |
| 1364 | |
| 1365 | if ( $wlIds ) { |
| 1366 | $fname = __METHOD__; |
| 1367 | // Try to run this post-send |
| 1368 | // Calls DeferredUpdates::addCallableUpdate in normal operation |
| 1369 | call_user_func( |
| 1370 | $this->deferredUpdatesAddCallableUpdateCallback, |
| 1371 | function () use ( $timestamp, $wlIds, $target, $fname ) { |
| 1372 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1373 | $ticket = $this->lbFactory->getEmptyTransactionTicket( $fname ); |
| 1374 | |
| 1375 | $wlIdsChunks = array_chunk( $wlIds, $this->updateRowsPerQuery ); |
| 1376 | foreach ( $wlIdsChunks as $wlIdsChunk ) { |
| 1377 | $dbw->newUpdateQueryBuilder() |
| 1378 | ->update( 'watchlist' ) |
| 1379 | ->set( [ 'wl_notificationtimestamp' => $dbw->timestamp( $timestamp ) ] ) |
| 1380 | ->where( [ 'wl_id' => $wlIdsChunk ] ) |
| 1381 | ->caller( $fname )->execute(); |
| 1382 | |
| 1383 | if ( count( $wlIdsChunks ) > 1 ) { |
| 1384 | $this->lbFactory->commitAndWaitForReplication( $fname, $ticket ); |
| 1385 | } |
| 1386 | } |
| 1387 | $this->uncacheLinkTarget( $target ); |
| 1388 | }, |
| 1389 | DeferredUpdates::POSTSEND, |
| 1390 | $dbw |
| 1391 | ); |
| 1392 | } |
| 1393 | |
| 1394 | return $watchers; |
| 1395 | } |
| 1396 | |
| 1397 | /** |
| 1398 | * @since 1.27 |
| 1399 | * @param UserIdentity $user |
| 1400 | * @param LinkTarget|PageIdentity $title deprecated passing LinkTarget since 1.36 |
| 1401 | * @param string $force |
| 1402 | * @param int $oldid |
| 1403 | * @return bool |
| 1404 | */ |
| 1405 | public function resetNotificationTimestamp( |
| 1406 | UserIdentity $user, |
| 1407 | $title, |
| 1408 | $force = '', |
| 1409 | $oldid = 0 |
| 1410 | ): bool { |
| 1411 | $time = time(); |
| 1412 | |
| 1413 | // Only registered user can have a watchlist |
| 1414 | if ( !$user->isRegistered() || $this->readOnlyMode->isReadOnly() ) { |
| 1415 | return false; |
| 1416 | } |
| 1417 | |
| 1418 | $item = null; |
| 1419 | if ( $force != 'force' ) { |
| 1420 | $item = $this->getWatchedItem( $user, $title ); |
| 1421 | if ( !$item || $item->getNotificationTimestamp() === null ) { |
| 1422 | return false; |
| 1423 | } |
| 1424 | } |
| 1425 | |
| 1426 | // Get the timestamp (TS_MW) of this revision to track the latest one seen |
| 1427 | $id = $oldid; |
| 1428 | $seenTime = null; |
| 1429 | if ( !$id ) { |
| 1430 | $latestRev = $this->revisionLookup->getRevisionByTitle( $title ); |
| 1431 | if ( $latestRev ) { |
| 1432 | $id = $latestRev->getId(); |
| 1433 | // Save a DB query |
| 1434 | $seenTime = $latestRev->getTimestamp(); |
| 1435 | } |
| 1436 | } |
| 1437 | if ( $seenTime === null ) { |
| 1438 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullable getId does not return null here |
| 1439 | $seenTime = $this->revisionLookup->getTimestampFromId( $id ); |
| 1440 | } |
| 1441 | |
| 1442 | // Mark the item as read immediately in lightweight storage |
| 1443 | $this->stash->merge( |
| 1444 | $this->getPageSeenTimestampsKey( $user ), |
| 1445 | function ( $cache, $key, $current ) use ( $title, $seenTime ) { |
| 1446 | if ( !$current ) { |
| 1447 | $value = new MapCacheLRU( 300 ); |
| 1448 | } elseif ( is_array( $current ) ) { |
| 1449 | $value = MapCacheLRU::newFromArray( $current, 300 ); |
| 1450 | } else { |
| 1451 | // Backwards compatibility for T282105 |
| 1452 | $value = $current; |
| 1453 | } |
| 1454 | $subKey = $this->getPageSeenKey( $title ); |
| 1455 | |
| 1456 | if ( $seenTime > $value->get( $subKey ) ) { |
| 1457 | // Revision is newer than the last one seen |
| 1458 | $value->set( $subKey, $seenTime ); |
| 1459 | |
| 1460 | $this->latestUpdateCache->set( $key, $value->toArray(), BagOStuff::TTL_PROC_LONG ); |
| 1461 | } elseif ( $seenTime === false ) { |
| 1462 | // Revision does not exist |
| 1463 | $value->set( $subKey, wfTimestamp( TS_MW ) ); |
| 1464 | $this->latestUpdateCache->set( $key, |
| 1465 | $value->toArray(), |
| 1466 | BagOStuff::TTL_PROC_LONG ); |
| 1467 | } else { |
| 1468 | return false; // nothing to update |
| 1469 | } |
| 1470 | |
| 1471 | return $value->toArray(); |
| 1472 | }, |
| 1473 | BagOStuff::TTL_HOUR |
| 1474 | ); |
| 1475 | |
| 1476 | // If the page is watched by the user (or may be watched), update the timestamp |
| 1477 | // ActivityUpdateJob accepts both LinkTarget and PageReference |
| 1478 | $job = new ActivityUpdateJob( |
| 1479 | $title, |
| 1480 | [ |
| 1481 | 'type' => 'updateWatchlistNotification', |
| 1482 | 'userid' => $user->getId(), |
| 1483 | 'notifTime' => $this->getNotificationTimestamp( $user, $title, $item, $force, $oldid ), |
| 1484 | 'curTime' => $time |
| 1485 | ] |
| 1486 | ); |
| 1487 | // Try to enqueue this post-send |
| 1488 | $this->queueGroup->lazyPush( $job ); |
| 1489 | |
| 1490 | $this->uncache( $user, $title ); |
| 1491 | |
| 1492 | return true; |
| 1493 | } |
| 1494 | |
| 1495 | /** |
| 1496 | * @param UserIdentity $user |
| 1497 | * @return array|null The map contains prefixed title keys and TS_MW values |
| 1498 | */ |
| 1499 | private function getPageSeenTimestamps( UserIdentity $user ) { |
| 1500 | $key = $this->getPageSeenTimestampsKey( $user ); |
| 1501 | |
| 1502 | $cache = $this->latestUpdateCache->getWithSetCallback( |
| 1503 | $key, |
| 1504 | BagOStuff::TTL_PROC_LONG, |
| 1505 | function () use ( $key ) { |
| 1506 | return $this->stash->get( $key ) ?: null; |
| 1507 | } |
| 1508 | ); |
| 1509 | // Backwards compatibility for T282105 |
| 1510 | if ( $cache instanceof MapCacheLRU ) { |
| 1511 | $cache = $cache->toArray(); |
| 1512 | } |
| 1513 | return $cache; |
| 1514 | } |
| 1515 | |
| 1516 | /** |
| 1517 | * @param UserIdentity $user |
| 1518 | * @return string |
| 1519 | */ |
| 1520 | private function getPageSeenTimestampsKey( UserIdentity $user ): string { |
| 1521 | return $this->stash->makeGlobalKey( |
| 1522 | 'watchlist-recent-updates', |
| 1523 | $this->lbFactory->getLocalDomainID(), |
| 1524 | $user->getId() |
| 1525 | ); |
| 1526 | } |
| 1527 | |
| 1528 | /** |
| 1529 | * @param LinkTarget|PageIdentity $target |
| 1530 | * @return string |
| 1531 | */ |
| 1532 | private function getPageSeenKey( $target ): string { |
| 1533 | return "{$target->getNamespace()}:{$target->getDBkey()}"; |
| 1534 | } |
| 1535 | |
| 1536 | /** |
| 1537 | * @param UserIdentity $user |
| 1538 | * @param LinkTarget|PageIdentity $title deprecated passing LinkTarget since 1.36 |
| 1539 | * @param WatchedItem|null $item |
| 1540 | * @param string $force |
| 1541 | * @param int|false $oldid The ID of the last revision that the user viewed |
| 1542 | * @return string|null|false |
| 1543 | */ |
| 1544 | private function getNotificationTimestamp( |
| 1545 | UserIdentity $user, |
| 1546 | $title, |
| 1547 | $item, |
| 1548 | $force, |
| 1549 | $oldid |
| 1550 | ) { |
| 1551 | if ( !$oldid ) { |
| 1552 | // No oldid given, assuming latest revision; clear the timestamp. |
| 1553 | return null; |
| 1554 | } |
| 1555 | |
| 1556 | $oldRev = $this->revisionLookup->getRevisionById( $oldid ); |
| 1557 | if ( !$oldRev ) { |
| 1558 | // Oldid given but does not exist (probably deleted) |
| 1559 | return false; |
| 1560 | } |
| 1561 | |
| 1562 | $nextRev = $this->revisionLookup->getNextRevision( $oldRev ); |
| 1563 | if ( !$nextRev ) { |
| 1564 | // Oldid given and is the latest revision for this title; clear the timestamp. |
| 1565 | return null; |
| 1566 | } |
| 1567 | |
| 1568 | $item ??= $this->loadWatchedItem( $user, $title ); |
| 1569 | if ( !$item ) { |
| 1570 | // This can only happen if $force is enabled. |
| 1571 | return null; |
| 1572 | } |
| 1573 | |
| 1574 | // Oldid given and isn't the latest; update the timestamp. |
| 1575 | // This will result in no further notification emails being sent! |
| 1576 | $notificationTimestamp = $this->revisionLookup->getTimestampFromId( $oldid ); |
| 1577 | // @FIXME: this should use getTimestamp() for consistency with updates on new edits |
| 1578 | // $notificationTimestamp = $nextRev->getTimestamp(); // first unseen revision timestamp |
| 1579 | |
| 1580 | // We need to go one second to the future because of various strict comparisons |
| 1581 | // throughout the codebase |
| 1582 | $ts = new MWTimestamp( $notificationTimestamp ); |
| 1583 | $ts->timestamp->add( new DateInterval( 'PT1S' ) ); |
| 1584 | $notificationTimestamp = $ts->getTimestamp( TS_MW ); |
| 1585 | |
| 1586 | if ( $notificationTimestamp < $item->getNotificationTimestamp() ) { |
| 1587 | if ( $force != 'force' ) { |
| 1588 | return false; |
| 1589 | } else { |
| 1590 | // This is a little silly… |
| 1591 | return $item->getNotificationTimestamp(); |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | return $notificationTimestamp; |
| 1596 | } |
| 1597 | |
| 1598 | /** |
| 1599 | * @since 1.27 |
| 1600 | * @param UserIdentity $user |
| 1601 | * @param int|null $unreadLimit |
| 1602 | * @return int|bool |
| 1603 | */ |
| 1604 | public function countUnreadNotifications( UserIdentity $user, $unreadLimit = null ) { |
| 1605 | $queryBuilder = $this->lbFactory->getReplicaDatabase()->newSelectQueryBuilder() |
| 1606 | ->select( '1' ) |
| 1607 | ->from( 'watchlist' ) |
| 1608 | ->where( [ |
| 1609 | 'wl_user' => $user->getId(), |
| 1610 | 'wl_notificationtimestamp IS NOT NULL' |
| 1611 | ] ) |
| 1612 | ->caller( __METHOD__ ); |
| 1613 | if ( $unreadLimit !== null ) { |
| 1614 | $unreadLimit = (int)$unreadLimit; |
| 1615 | $queryBuilder->limit( $unreadLimit ); |
| 1616 | } |
| 1617 | |
| 1618 | $rowCount = $queryBuilder->fetchRowCount(); |
| 1619 | |
| 1620 | if ( $unreadLimit === null ) { |
| 1621 | return $rowCount; |
| 1622 | } |
| 1623 | |
| 1624 | if ( $rowCount >= $unreadLimit ) { |
| 1625 | return true; |
| 1626 | } |
| 1627 | |
| 1628 | return $rowCount; |
| 1629 | } |
| 1630 | |
| 1631 | /** |
| 1632 | * @since 1.27 |
| 1633 | * @param LinkTarget|PageIdentity $oldTarget deprecated passing LinkTarget since 1.36 |
| 1634 | * @param LinkTarget|PageIdentity $newTarget deprecated passing LinkTarget since 1.36 |
| 1635 | */ |
| 1636 | public function duplicateAllAssociatedEntries( $oldTarget, $newTarget ) { |
| 1637 | // Duplicate first the subject page, then the talk page |
| 1638 | // TODO: convert to PageIdentity |
| 1639 | $this->duplicateEntry( |
| 1640 | new TitleValue( $this->nsInfo->getSubject( $oldTarget->getNamespace() ), $oldTarget->getDBkey() ), |
| 1641 | new TitleValue( $this->nsInfo->getSubject( $newTarget->getNamespace() ), $newTarget->getDBkey() ) |
| 1642 | ); |
| 1643 | $this->duplicateEntry( |
| 1644 | new TitleValue( $this->nsInfo->getTalk( $oldTarget->getNamespace() ), $oldTarget->getDBkey() ), |
| 1645 | new TitleValue( $this->nsInfo->getTalk( $newTarget->getNamespace() ), $newTarget->getDBkey() ) |
| 1646 | ); |
| 1647 | } |
| 1648 | |
| 1649 | /** |
| 1650 | * @since 1.27 |
| 1651 | * @param LinkTarget|PageIdentity $oldTarget deprecated passing LinkTarget since 1.36 |
| 1652 | * @param LinkTarget|PageIdentity $newTarget deprecated passing LinkTarget since 1.36 |
| 1653 | */ |
| 1654 | public function duplicateEntry( $oldTarget, $newTarget ) { |
| 1655 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1656 | $result = $this->fetchWatchedItemsForPage( $dbw, $oldTarget ); |
| 1657 | $newNamespace = $newTarget->getNamespace(); |
| 1658 | $newDBkey = $newTarget->getDBkey(); |
| 1659 | |
| 1660 | # Construct array to replace into the watchlist |
| 1661 | $values = []; |
| 1662 | $expiries = []; |
| 1663 | foreach ( $result as $row ) { |
| 1664 | $values[] = [ |
| 1665 | 'wl_user' => $row->wl_user, |
| 1666 | 'wl_namespace' => $newNamespace, |
| 1667 | 'wl_title' => $newDBkey, |
| 1668 | 'wl_notificationtimestamp' => $row->wl_notificationtimestamp, |
| 1669 | ]; |
| 1670 | |
| 1671 | if ( $this->expiryEnabled && $row->we_expiry ) { |
| 1672 | $expiries[$row->wl_user] = $row->we_expiry; |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | if ( !$values ) { |
| 1677 | return; |
| 1678 | } |
| 1679 | |
| 1680 | // Perform a replace on the watchlist table rows. |
| 1681 | // Note that multi-row replace is very efficient for MySQL but may be inefficient for |
| 1682 | // some other DBMSes, mostly due to poor simulation by us. |
| 1683 | $dbw->newReplaceQueryBuilder() |
| 1684 | ->replaceInto( 'watchlist' ) |
| 1685 | ->uniqueIndexFields( [ 'wl_user', 'wl_namespace', 'wl_title' ] ) |
| 1686 | ->rows( $values ) |
| 1687 | ->caller( __METHOD__ )->execute(); |
| 1688 | |
| 1689 | if ( $this->expiryEnabled ) { |
| 1690 | $this->updateExpiriesAfterMove( $dbw, $expiries, $newNamespace, $newDBkey ); |
| 1691 | } |
| 1692 | } |
| 1693 | |
| 1694 | /** |
| 1695 | * @param IReadableDatabase $dbr |
| 1696 | * @param LinkTarget|PageIdentity $target |
| 1697 | * @return IResultWrapper |
| 1698 | */ |
| 1699 | private function fetchWatchedItemsForPage( |
| 1700 | IReadableDatabase $dbr, |
| 1701 | $target |
| 1702 | ): IResultWrapper { |
| 1703 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 1704 | ->select( [ 'wl_user', 'wl_notificationtimestamp' ] ) |
| 1705 | ->from( 'watchlist' ) |
| 1706 | ->where( [ |
| 1707 | 'wl_namespace' => $target->getNamespace(), |
| 1708 | 'wl_title' => $target->getDBkey(), |
| 1709 | ] ) |
| 1710 | ->caller( __METHOD__ ) |
| 1711 | ->forUpdate(); |
| 1712 | |
| 1713 | if ( $this->expiryEnabled ) { |
| 1714 | $queryBuilder->leftJoin( 'watchlist_expiry', null, [ 'wl_id = we_item' ] ) |
| 1715 | ->field( 'we_expiry' ); |
| 1716 | } |
| 1717 | |
| 1718 | return $queryBuilder->fetchResultSet(); |
| 1719 | } |
| 1720 | |
| 1721 | /** |
| 1722 | * @param IDatabase $dbw |
| 1723 | * @param array $expiries |
| 1724 | * @param int $namespace |
| 1725 | * @param string $dbKey |
| 1726 | */ |
| 1727 | private function updateExpiriesAfterMove( |
| 1728 | IDatabase $dbw, |
| 1729 | array $expiries, |
| 1730 | int $namespace, |
| 1731 | string $dbKey |
| 1732 | ): void { |
| 1733 | DeferredUpdates::addCallableUpdate( |
| 1734 | function ( $fname ) use ( $dbw, $expiries, $namespace, $dbKey ) { |
| 1735 | // First fetch new wl_ids. |
| 1736 | $res = $dbw->newSelectQueryBuilder() |
| 1737 | ->select( [ 'wl_user', 'wl_id' ] ) |
| 1738 | ->from( 'watchlist' ) |
| 1739 | ->where( [ |
| 1740 | 'wl_namespace' => $namespace, |
| 1741 | 'wl_title' => $dbKey, |
| 1742 | ] ) |
| 1743 | ->caller( $fname ) |
| 1744 | ->fetchResultSet(); |
| 1745 | |
| 1746 | // Build new array to INSERT into multiple rows at once. |
| 1747 | $expiryData = []; |
| 1748 | foreach ( $res as $row ) { |
| 1749 | if ( !empty( $expiries[$row->wl_user] ) ) { |
| 1750 | $expiryData[] = [ |
| 1751 | 'we_item' => $row->wl_id, |
| 1752 | 'we_expiry' => $expiries[$row->wl_user], |
| 1753 | ]; |
| 1754 | } |
| 1755 | } |
| 1756 | |
| 1757 | // Batch the insertions. |
| 1758 | $batches = array_chunk( $expiryData, $this->updateRowsPerQuery ); |
| 1759 | foreach ( $batches as $toInsert ) { |
| 1760 | $dbw->newReplaceQueryBuilder() |
| 1761 | ->replaceInto( 'watchlist_expiry' ) |
| 1762 | ->uniqueIndexFields( [ 'we_item' ] ) |
| 1763 | ->rows( $toInsert ) |
| 1764 | ->caller( $fname ) |
| 1765 | ->execute(); |
| 1766 | } |
| 1767 | }, |
| 1768 | DeferredUpdates::POSTSEND, |
| 1769 | $dbw |
| 1770 | ); |
| 1771 | } |
| 1772 | |
| 1773 | /** |
| 1774 | * @param LinkTarget[]|PageIdentity[] $titles |
| 1775 | * @return array |
| 1776 | */ |
| 1777 | private function getTitleDbKeysGroupedByNamespace( array $titles ) { |
| 1778 | $rows = []; |
| 1779 | foreach ( $titles as $title ) { |
| 1780 | // Group titles by namespace. |
| 1781 | $rows[ $title->getNamespace() ][] = $title->getDBkey(); |
| 1782 | } |
| 1783 | return $rows; |
| 1784 | } |
| 1785 | |
| 1786 | /** |
| 1787 | * @param UserIdentity $user |
| 1788 | * @param LinkTarget[]|PageIdentity[] $titles |
| 1789 | */ |
| 1790 | private function uncacheTitlesForUser( UserIdentity $user, array $titles ) { |
| 1791 | foreach ( $titles as $title ) { |
| 1792 | $this->uncache( $user, $title ); |
| 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | /** |
| 1797 | * @inheritDoc |
| 1798 | */ |
| 1799 | public function countExpired(): int { |
| 1800 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 1801 | return $dbr->newSelectQueryBuilder() |
| 1802 | ->select( '*' ) |
| 1803 | ->from( 'watchlist_expiry' ) |
| 1804 | ->where( $dbr->expr( 'we_expiry', '<=', $dbr->timestamp() ) ) |
| 1805 | ->caller( __METHOD__ ) |
| 1806 | ->fetchRowCount(); |
| 1807 | } |
| 1808 | |
| 1809 | /** |
| 1810 | * @inheritDoc |
| 1811 | */ |
| 1812 | public function removeExpired( int $limit, bool $deleteOrphans = false ): void { |
| 1813 | $dbr = $this->lbFactory->getReplicaDatabase(); |
| 1814 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 1815 | $ticket = $this->lbFactory->getEmptyTransactionTicket( __METHOD__ ); |
| 1816 | |
| 1817 | // Get a batch of watchlist IDs to delete. |
| 1818 | $toDelete = $dbr->newSelectQueryBuilder() |
| 1819 | ->select( 'we_item' ) |
| 1820 | ->from( 'watchlist_expiry' ) |
| 1821 | ->where( $dbr->expr( 'we_expiry', '<=', $dbr->timestamp() ) ) |
| 1822 | ->limit( $limit ) |
| 1823 | ->caller( __METHOD__ ) |
| 1824 | ->fetchFieldValues(); |
| 1825 | |
| 1826 | if ( count( $toDelete ) > 0 ) { |
| 1827 | // Delete them from the watchlist and watchlist_expiry table. |
| 1828 | $dbw->newDeleteQueryBuilder() |
| 1829 | ->deleteFrom( 'watchlist' ) |
| 1830 | ->where( [ 'wl_id' => $toDelete ] ) |
| 1831 | ->caller( __METHOD__ )->execute(); |
| 1832 | $dbw->newDeleteQueryBuilder() |
| 1833 | ->deleteFrom( 'watchlist_expiry' ) |
| 1834 | ->where( [ 'we_item' => $toDelete ] ) |
| 1835 | ->caller( __METHOD__ )->execute(); |
| 1836 | } |
| 1837 | |
| 1838 | // Also delete any orphaned or null-expiry watchlist_expiry rows |
| 1839 | // (they should not exist, but might because not everywhere knows about the expiry table yet). |
| 1840 | if ( $deleteOrphans ) { |
| 1841 | $expiryToDelete = $dbr->newSelectQueryBuilder() |
| 1842 | ->select( 'we_item' ) |
| 1843 | ->from( 'watchlist_expiry' ) |
| 1844 | ->leftJoin( 'watchlist', null, 'wl_id = we_item' ) |
| 1845 | ->where( $dbr->makeList( |
| 1846 | [ 'wl_id' => null, 'we_expiry' => null ], |
| 1847 | $dbr::LIST_OR |
| 1848 | ) ) |
| 1849 | ->caller( __METHOD__ ) |
| 1850 | ->fetchFieldValues(); |
| 1851 | if ( count( $expiryToDelete ) > 0 ) { |
| 1852 | $dbw->newDeleteQueryBuilder() |
| 1853 | ->deleteFrom( 'watchlist_expiry' ) |
| 1854 | ->where( [ 'we_item' => $expiryToDelete ] ) |
| 1855 | ->caller( __METHOD__ )->execute(); |
| 1856 | } |
| 1857 | } |
| 1858 | |
| 1859 | $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket ); |
| 1860 | } |
| 1861 | } |
| 1862 | /** @deprecated class alias since 1.43 */ |
| 1863 | class_alias( WatchedItemStore::class, 'WatchedItemStore' ); |