Convert WatchedItem and friends to LinkTarget
[lhc/web/wiklou.git] / includes / watcheditem / WatchedItemStore.php
index 274a35d..bd4360e 100644 (file)
@@ -1,12 +1,14 @@
 <?php
 
-use Wikimedia\Rdbms\IDatabase;
 use Liuggio\StatsdClient\Factory\StatsdDataFactoryInterface;
 use MediaWiki\Linker\LinkTarget;
+use MediaWiki\Revision\RevisionLookup;
+use MediaWiki\User\UserIdentity;
 use Wikimedia\Assert\Assert;
-use Wikimedia\ScopedCallback;
+use Wikimedia\Rdbms\IDatabase;
 use Wikimedia\Rdbms\ILBFactory;
 use Wikimedia\Rdbms\LoadBalancer;
+use Wikimedia\ScopedCallback;
 
 /**
  * Storage layer class for WatchedItems.
@@ -67,14 +69,19 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        private $deferredUpdatesAddCallableUpdateCallback;
 
        /**
-        * @var callable|null
+        * @var int
         */
-       private $revisionGetTimestampFromIdCallback;
+       private $updateRowsPerQuery;
 
        /**
-        * @var int
+        * @var NamespaceInfo
         */
-       private $updateRowsPerQuery;
+       private $nsInfo;
+
+       /**
+        * @var RevisionLookup
+        */
+       private $revisionLookup;
 
        /**
         * @var StatsdDataFactoryInterface
@@ -88,6 +95,8 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
         * @param HashBagOStuff $cache
         * @param ReadOnlyMode $readOnlyMode
         * @param int $updateRowsPerQuery
+        * @param NamespaceInfo $nsInfo
+        * @param RevisionLookup $revisionLookup
         */
        public function __construct(
                ILBFactory $lbFactory,
@@ -95,7 +104,9 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                BagOStuff $stash,
                HashBagOStuff $cache,
                ReadOnlyMode $readOnlyMode,
-               $updateRowsPerQuery
+               $updateRowsPerQuery,
+               NamespaceInfo $nsInfo,
+               RevisionLookup $revisionLookup
        ) {
                $this->lbFactory = $lbFactory;
                $this->loadBalancer = $lbFactory->getMainLB();
@@ -106,9 +117,9 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                $this->stats = new NullStatsdDataFactory();
                $this->deferredUpdatesAddCallableUpdateCallback =
                        [ DeferredUpdates::class, 'addCallableUpdate' ];
-               $this->revisionGetTimestampFromIdCallback =
-                       [ Revision::class, 'getTimestampFromId' ];
                $this->updateRowsPerQuery = $updateRowsPerQuery;
+               $this->nsInfo = $nsInfo;
+               $this->revisionLookup = $revisionLookup;
 
                $this->latestUpdateCache = new HashBagOStuff( [ 'maxKeys' => 3 ] );
        }
@@ -144,30 +155,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                } );
        }
 
-       /**
-        * Overrides the Revision::getTimestampFromId callback
-        * This is intended for use while testing and will fail if MW_PHPUNIT_TEST is not defined.
-        *
-        * @param callable $callback
-        * @see Revision::getTimestampFromId for callback signiture
-        *
-        * @return ScopedCallback to reset the overridden value
-        * @throws MWException
-        */
-       public function overrideRevisionGetTimestampFromIdCallback( callable $callback ) {
-               if ( !defined( 'MW_PHPUNIT_TEST' ) ) {
-                       throw new MWException(
-                               'Cannot override Revision::getTimestampFromId callback in operation.'
-                       );
-               }
-               $previousValue = $this->revisionGetTimestampFromIdCallback;
-               $this->revisionGetTimestampFromIdCallback = $callback;
-               return new ScopedCallback( function () use ( $previousValue ) {
-                       $this->revisionGetTimestampFromIdCallback = $previousValue;
-               } );
-       }
-
-       private function getCacheKey( User $user, LinkTarget $target ) {
+       private function getCacheKey( UserIdentity $user, LinkTarget $target ) {
                return $this->cache->makeKey(
                        (string)$target->getNamespace(),
                        $target->getDBkey(),
@@ -176,7 +164,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        private function cache( WatchedItem $item ) {
-               $user = $item->getUser();
+               $user = $item->getUserIdentity();
                $target = $item->getLinkTarget();
                $key = $this->getCacheKey( $user, $target );
                $this->cache->set( $key, $item );
@@ -184,7 +172,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                $this->stats->increment( 'WatchedItemStore.cache' );
        }
 
-       private function uncache( User $user, LinkTarget $target ) {
+       private function uncache( UserIdentity $user, LinkTarget $target ) {
                $this->cache->delete( $this->getCacheKey( $user, $target ) );
                unset( $this->cacheIndex[$target->getNamespace()][$target->getDBkey()][$user->getId()] );
                $this->stats->increment( 'WatchedItemStore.uncache' );
@@ -201,7 +189,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                }
        }
 
-       private function uncacheUser( User $user ) {
+       private function uncacheUser( UserIdentity $user ) {
                $this->stats->increment( 'WatchedItemStore.uncacheUser' );
                foreach ( $this->cacheIndex as $ns => $dbKeyArray ) {
                        foreach ( $dbKeyArray as $dbKey => $userArray ) {
@@ -211,15 +199,19 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                                }
                        }
                }
+
+               $pageSeenKey = $this->getPageSeenTimestampsKey( $user );
+               $this->latestUpdateCache->delete( $pageSeenKey );
+               $this->stash->delete( $pageSeenKey );
        }
 
        /**
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         *
         * @return WatchedItem|false
         */
-       private function getCached( User $user, LinkTarget $target ) {
+       private function getCached( UserIdentity $user, LinkTarget $target ) {
                return $this->cache->get( $this->getCacheKey( $user, $target ) );
        }
 
@@ -227,12 +219,12 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
         * Return an array of conditions to select or update the appropriate database
         * row.
         *
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         *
         * @return array
         */
-       private function dbCond( User $user, LinkTarget $target ) {
+       private function dbCond( UserIdentity $user, LinkTarget $target ) {
                return [
                        'wl_user' => $user->getId(),
                        'wl_namespace' => $target->getNamespace(),
@@ -256,11 +248,11 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
         *
         * @since 1.30
         *
-        * @param User $user
+        * @param UserIdentity $user
         *
         * @return bool true on success, false when too many items are watched
         */
-       public function clearUserWatchedItems( User $user ) {
+       public function clearUserWatchedItems( UserIdentity $user ) {
                if ( $this->countWatchedItems( $user ) > $this->updateRowsPerQuery ) {
                        return false;
                }
@@ -276,7 +268,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                return true;
        }
 
-       private function uncacheAllItemsForUser( User $user ) {
+       private function uncacheAllItemsForUser( UserIdentity $user ) {
                $userId = $user->getId();
                foreach ( $this->cacheIndex as $ns => $dbKeyIndex ) {
                        foreach ( $dbKeyIndex as $dbKey => $userIndex ) {
@@ -305,9 +297,9 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
         *
         * @since 1.31
         *
-        * @param User $user
+        * @param UserIdentity $user
         */
-       public function clearUserWatchedItemsUsingJobQueue( User $user ) {
+       public function clearUserWatchedItemsUsingJobQueue( UserIdentity $user ) {
                $job = ClearUserWatchlistJob::newForUser( $user, $this->getMaxId() );
                $this->queueGroup->push( $job );
        }
@@ -328,10 +320,10 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.31
-        * @param User $user
+        * @param UserIdentity $user
         * @return int
         */
-       public function countWatchedItems( User $user ) {
+       public function countWatchedItems( UserIdentity $user ) {
                $dbr = $this->getConnectionRef( DB_REPLICA );
                $return = (int)$dbr->selectField(
                        'watchlist',
@@ -390,16 +382,16 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        /**
-        * @param User $user
+        * @param UserIdentity $user
         * @param TitleValue[] $titles
         * @return bool
         * @throws MWException
         */
-       public function removeWatchBatchForUser( User $user, array $titles ) {
+       public function removeWatchBatchForUser( UserIdentity $user, array $titles ) {
                if ( $this->readOnlyMode->isReadOnly() ) {
                        return false;
                }
-               if ( $user->isAnon() ) {
+               if ( !$user->isRegistered() ) {
                        return false;
                }
                if ( !$titles ) {
@@ -559,12 +551,12 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         * @return bool
         */
-       public function getWatchedItem( User $user, LinkTarget $target ) {
-               if ( $user->isAnon() ) {
+       public function getWatchedItem( UserIdentity $user, LinkTarget $target ) {
+               if ( !$user->isRegistered() ) {
                        return false;
                }
 
@@ -579,13 +571,13 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         * @return WatchedItem|bool
         */
-       public function loadWatchedItem( User $user, LinkTarget $target ) {
-               // Only loggedin user can have a watchlist
-               if ( $user->isAnon() ) {
+       public function loadWatchedItem( UserIdentity $user, LinkTarget $target ) {
+               // Only registered user can have a watchlist
+               if ( !$user->isRegistered() ) {
                        return false;
                }
 
@@ -614,11 +606,11 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param array $options
         * @return WatchedItem[]
         */
-       public function getWatchedItemsForUser( User $user, array $options = [] ) {
+       public function getWatchedItemsForUser( UserIdentity $user, array $options = [] ) {
                $options += [ 'forWrite' => false ];
 
                $dbOptions = [];
@@ -660,27 +652,27 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         * @return bool
         */
-       public function isWatched( User $user, LinkTarget $target ) {
+       public function isWatched( UserIdentity $user, LinkTarget $target ) {
                return (bool)$this->getWatchedItem( $user, $target );
        }
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget[] $targets
         * @return array
         */
-       public function getNotificationTimestampsBatch( User $user, array $targets ) {
+       public function getNotificationTimestampsBatch( UserIdentity $user, array $targets ) {
                $timestamps = [];
                foreach ( $targets as $target ) {
                        $timestamps[$target->getNamespace()][$target->getDBkey()] = false;
                }
 
-               if ( $user->isAnon() ) {
+               if ( !$user->isRegistered() ) {
                        return $timestamps;
                }
 
@@ -724,27 +716,27 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         * @throws MWException
         */
-       public function addWatch( User $user, LinkTarget $target ) {
+       public function addWatch( UserIdentity $user, LinkTarget $target ) {
                $this->addWatchBatchForUser( $user, [ $target ] );
        }
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget[] $targets
         * @return bool
         * @throws MWException
         */
-       public function addWatchBatchForUser( User $user, array $targets ) {
+       public function addWatchBatchForUser( UserIdentity $user, array $targets ) {
                if ( $this->readOnlyMode->isReadOnly() ) {
                        return false;
                }
-               // Only logged-in user can have a watchlist
-               if ( $user->isAnon() ) {
+               // Only registered user can have a watchlist
+               if ( !$user->isRegistered() ) {
                        return false;
                }
 
@@ -795,53 +787,85 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param LinkTarget $target
         * @return bool
         * @throws MWException
         */
-       public function removeWatch( User $user, LinkTarget $target ) {
+       public function removeWatch( UserIdentity $user, LinkTarget $target ) {
                return $this->removeWatchBatchForUser( $user, [ $target ] );
        }
 
        /**
+        * Set the "last viewed" timestamps for certain titles on a user's watchlist.
+        *
+        * If the $targets parameter is omitted or set to [], this method simply wraps
+        * resetAllNotificationTimestampsForUser(), and in that case you should instead call that method
+        * directly; support for omitting $targets is for backwards compatibility.
+        *
+        * If $targets is omitted or set to [], timestamps will be updated for every title on the user's
+        * watchlist, and this will be done through a DeferredUpdate. If $targets is a non-empty array,
+        * only the specified titles will be updated, and this will be done immediately (not deferred).
+        *
         * @since 1.27
-        * @param User $user
-        * @param string|int $timestamp
-        * @param LinkTarget[] $targets
+        * @param UserIdentity $user
+        * @param string|int $timestamp Value to set the "last viewed" timestamp to (null to clear)
+        * @param LinkTarget[] $targets Titles to set the timestamp for; [] means the entire watchlist
         * @return bool
         */
-       public function setNotificationTimestampsForUser( User $user, $timestamp, array $targets = [] ) {
-               // Only loggedin user can have a watchlist
-               if ( $user->isAnon() ) {
+       public function setNotificationTimestampsForUser(
+               UserIdentity $user, $timestamp, array $targets = []
+       ) {
+               // Only registered user can have a watchlist
+               if ( !$user->isRegistered() || $this->readOnlyMode->isReadOnly() ) {
                        return false;
                }
 
-               $dbw = $this->getConnectionRef( DB_MASTER );
-
-               $conds = [ 'wl_user' => $user->getId() ];
-               if ( $targets ) {
-                       $batch = new LinkBatch( $targets );
-                       $conds[] = $batch->constructSet( 'wl', $dbw );
+               if ( !$targets ) {
+                       // Backwards compatibility
+                       $this->resetAllNotificationTimestampsForUser( $user, $timestamp );
+                       return true;
                }
 
+               $rows = $this->getTitleDbKeysGroupedByNamespace( $targets );
+
+               $dbw = $this->getConnectionRef( DB_MASTER );
                if ( $timestamp !== null ) {
                        $timestamp = $dbw->timestamp( $timestamp );
                }
+               $ticket = $this->lbFactory->getEmptyTransactionTicket( __METHOD__ );
+               $affectedSinceWait = 0;
 
-               $dbw->update(
-                       'watchlist',
-                       [ 'wl_notificationtimestamp' => $timestamp ],
-                       $conds,
-                       __METHOD__
-               );
+               // Batch update items per namespace
+               foreach ( $rows as $namespace => $namespaceTitles ) {
+                       $rowBatches = array_chunk( $namespaceTitles, $this->updateRowsPerQuery );
+                       foreach ( $rowBatches as $toUpdate ) {
+                               $dbw->update(
+                                       'watchlist',
+                                       [ 'wl_notificationtimestamp' => $timestamp ],
+                                       [
+                                               'wl_user' => $user->getId(),
+                                               'wl_namespace' => $namespace,
+                                               'wl_title' => $toUpdate
+                                       ]
+                               );
+                               $affectedSinceWait += $dbw->affectedRows();
+                               // Wait for replication every time we've touched updateRowsPerQuery rows
+                               if ( $affectedSinceWait >= $this->updateRowsPerQuery ) {
+                                       $this->lbFactory->commitAndWaitForReplication( __METHOD__, $ticket );
+                                       $affectedSinceWait = 0;
+                               }
+                       }
+               }
 
                $this->uncacheUser( $user );
 
                return true;
        }
 
-       public function getLatestNotificationTimestamp( $timestamp, User $user, LinkTarget $target ) {
+       public function getLatestNotificationTimestamp(
+               $timestamp, UserIdentity $user, LinkTarget $target
+       ) {
                $timestamp = wfTimestampOrNull( TS_MW, $timestamp );
                if ( $timestamp === null ) {
                        return null; // no notification
@@ -859,17 +883,22 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                return $timestamp;
        }
 
-       public function resetAllNotificationTimestampsForUser( User $user ) {
-               // Only loggedin user can have a watchlist
-               if ( $user->isAnon() ) {
+       /**
+        * Schedule a DeferredUpdate that sets all of the "last viewed" timestamps for a given user
+        * to the same value.
+        * @param UserIdentity $user
+        * @param string|int|null $timestamp Value to set all timestamps to, null to clear them
+        */
+       public function resetAllNotificationTimestampsForUser( UserIdentity $user, $timestamp = null ) {
+               // Only registered user can have a watchlist
+               if ( !$user->isRegistered() ) {
                        return;
                }
 
                // If the page is watched by the user (or may be watched), update the timestamp
-               $job = new ClearWatchlistNotificationsJob(
-                       $user->getUserPage(),
-                       [ 'userId'  => $user->getId(), 'casTime' => time() ]
-               );
+               $job = new ClearWatchlistNotificationsJob( [
+                       'userId'  => $user->getId(), 'timestamp' => $timestamp, 'casTime' => time()
+               ] );
 
                // Try to run this post-send
                // Calls DeferredUpdates::addCallableUpdate in normal operation
@@ -883,12 +912,14 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $editor
+        * @param UserIdentity $editor
         * @param LinkTarget $target
         * @param string|int $timestamp
         * @return int[]
         */
-       public function updateNotificationTimestamp( User $editor, LinkTarget $target, $timestamp ) {
+       public function updateNotificationTimestamp(
+               UserIdentity $editor, LinkTarget $target, $timestamp
+       ) {
                $dbw = $this->getConnectionRef( DB_MASTER );
                $uids = $dbw->selectFieldValues(
                        'watchlist',
@@ -940,23 +971,36 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
-        * @param Title $title
+        * @param UserIdentity $user
+        * @param LinkTarget $title
         * @param string $force
         * @param int $oldid
         * @return bool
         */
-       public function resetNotificationTimestamp( User $user, Title $title, $force = '', $oldid = 0 ) {
+       public function resetNotificationTimestamp(
+               UserIdentity $user, LinkTarget $title, $force = '', $oldid = 0
+       ) {
                $time = time();
 
-               // Only loggedin user can have a watchlist
-               if ( $this->readOnlyMode->isReadOnly() || $user->isAnon() ) {
+               // Only registered user can have a watchlist
+               if ( $this->readOnlyMode->isReadOnly() || !$user->isRegistered() ) {
                        return false;
                }
 
-               if ( !Hooks::run( 'BeforeResetNotificationTimestamp', [ &$user, &$title, $force, &$oldid ] ) ) {
+               // Hook expects User and Title, not UserIdentity and LinkTarget
+               $userObj = User::newFromId( $user->getId() );
+               $titleObj = Title::castFromLinkTarget( $title );
+               if ( !Hooks::run( 'BeforeResetNotificationTimestamp',
+                       [ &$userObj, &$titleObj, $force, &$oldid ] )
+               ) {
                        return false;
                }
+               if ( !$userObj->equals( $user ) ) {
+                       $user = $userObj;
+               }
+               if ( !$titleObj->equals( $title ) ) {
+                       $title = $titleObj;
+               }
 
                $item = null;
                if ( $force != 'force' ) {
@@ -966,14 +1010,39 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                        }
                }
 
+               // Get the timestamp (TS_MW) of this revision to track the latest one seen
+               $id = $oldid;
+               $seenTime = null;
+               if ( !$id ) {
+                       $latestRev = $this->revisionLookup->getRevisionByTitle( $title );
+                       if ( $latestRev ) {
+                               $id = $latestRev->getId();
+                               // Save a DB query
+                               $seenTime = $latestRev->getTimestamp();
+                       }
+               }
+               if ( $seenTime === null ) {
+                       $seenTime = $this->revisionLookup->getTimestampFromId( $id );
+               }
+
                // Mark the item as read immediately in lightweight storage
                $this->stash->merge(
                        $this->getPageSeenTimestampsKey( $user ),
-                       function ( $cache, $key, $current ) use ( $time, $title ) {
+                       function ( $cache, $key, $current ) use ( $title, $seenTime ) {
                                $value = $current ?: new MapCacheLRU( 300 );
-                               $value->set( $this->getPageSeenKey( $title ), wfTimestamp( TS_MW, $time ) );
-
-                               $this->latestUpdateCache->set( $key, $value, IExpiringStore::TTL_PROC_LONG );
+                               $subKey = $this->getPageSeenKey( $title );
+
+                               if ( $seenTime > $value->get( $subKey ) ) {
+                                       // Revision is newer than the last one seen
+                                       $value->set( $subKey, $seenTime );
+                                       $this->latestUpdateCache->set( $key, $value, IExpiringStore::TTL_PROC_LONG );
+                               } elseif ( $seenTime === false ) {
+                                       // Revision does not exist
+                                       $value->set( $subKey, wfTimestamp( TS_MW ) );
+                                       $this->latestUpdateCache->set( $key, $value, IExpiringStore::TTL_PROC_LONG );
+                               } else {
+                                       return false; // nothing to update
+                               }
 
                                return $value;
                        },
@@ -999,10 +1068,10 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        /**
-        * @param User $user
-        * @return MapCacheLRU|null
+        * @param UserIdentity $user
+        * @return MapCacheLRU|null The map contains prefixed title keys and TS_MW values
         */
-       private function getPageSeenTimestamps( User $user ) {
+       private function getPageSeenTimestamps( UserIdentity $user ) {
                $key = $this->getPageSeenTimestampsKey( $user );
 
                return $this->latestUpdateCache->getWithSetCallback(
@@ -1015,10 +1084,10 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        /**
-        * @param User $user
+        * @param UserIdentity $user
         * @return string
         */
-       private function getPageSeenTimestampsKey( User $user ) {
+       private function getPageSeenTimestampsKey( UserIdentity $user ) {
                return $this->stash->makeGlobalKey(
                        'watchlist-recent-updates',
                        $this->lbFactory->getLocalDomainID(),
@@ -1034,13 +1103,16 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
                return "{$target->getNamespace()}:{$target->getDBkey()}";
        }
 
-       private function getNotificationTimestamp( User $user, Title $title, $item, $force, $oldid ) {
+       private function getNotificationTimestamp(
+               UserIdentity $user, LinkTarget $title, $item, $force, $oldid
+       ) {
                if ( !$oldid ) {
                        // No oldid given, assuming latest revision; clear the timestamp.
                        return null;
                }
 
-               if ( !$title->getNextRevisionID( $oldid ) ) {
+               $oldRev = $this->revisionLookup->getRevisionById( $oldid );
+               if ( !$this->revisionLookup->getNextRevision( $oldRev, $title ) ) {
                        // Oldid given and is the latest revision for this title; clear the timestamp.
                        return null;
                }
@@ -1056,12 +1128,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
                // Oldid given and isn't the latest; update the timestamp.
                // This will result in no further notification emails being sent!
-               // Calls Revision::getTimestampFromId in normal operation
-               $notificationTimestamp = call_user_func(
-                       $this->revisionGetTimestampFromIdCallback,
-                       $title,
-                       $oldid
-               );
+               $notificationTimestamp = $this->revisionLookup->getTimestampFromId( $oldid );
 
                // We need to go one second to the future because of various strict comparisons
                // throughout the codebase
@@ -1083,11 +1150,11 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
 
        /**
         * @since 1.27
-        * @param User $user
+        * @param UserIdentity $user
         * @param int|null $unreadLimit
         * @return int|bool
         */
-       public function countUnreadNotifications( User $user, $unreadLimit = null ) {
+       public function countUnreadNotifications( UserIdentity $user, $unreadLimit = null ) {
                $dbr = $this->getConnectionRef( DB_REPLICA );
 
                $queryOptions = [];
@@ -1120,11 +1187,15 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
         * @param LinkTarget $newTarget
         */
        public function duplicateAllAssociatedEntries( LinkTarget $oldTarget, LinkTarget $newTarget ) {
-               $oldTarget = Title::newFromLinkTarget( $oldTarget );
-               $newTarget = Title::newFromLinkTarget( $newTarget );
-
-               $this->duplicateEntry( $oldTarget->getSubjectPage(), $newTarget->getSubjectPage() );
-               $this->duplicateEntry( $oldTarget->getTalkPage(), $newTarget->getTalkPage() );
+               // Duplicate first the subject page, then the talk page
+               $this->duplicateEntry(
+                       $this->nsInfo->getSubjectPage( $oldTarget ),
+                       $this->nsInfo->getSubjectPage( $newTarget )
+               );
+               $this->duplicateEntry(
+                       $this->nsInfo->getTalkPage( $oldTarget ),
+                       $this->nsInfo->getTalkPage( $newTarget )
+               );
        }
 
        /**
@@ -1174,7 +1245,7 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        /**
-        * @param TitleValue[] $titles
+        * @param LinkTarget[] $titles
         * @return array
         */
        private function getTitleDbKeysGroupedByNamespace( array $titles ) {
@@ -1187,10 +1258,10 @@ class WatchedItemStore implements WatchedItemStoreInterface, StatsdAwareInterfac
        }
 
        /**
-        * @param User $user
-        * @param Title[] $titles
+        * @param UserIdentity $user
+        * @param LinkTarget[] $titles
         */
-       private function uncacheTitlesForUser( User $user, array $titles ) {
+       private function uncacheTitlesForUser( UserIdentity $user, array $titles ) {
                foreach ( $titles as $title ) {
                        $this->uncache( $user, $title );
                }