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<?php /** * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @file */ namespace MediaWiki\Watchlist; use InvalidArgumentException; use Job; use MediaWiki\Linker\LinkTarget; use MediaWiki\MediaWikiServices; use MediaWiki\Page\PageReference; /** * Job for updating user activity like "last viewed" timestamps * * Job parameters include: * - type: one of (updateWatchlistNotification) [required] * - userid: affected user ID [required] * - notifTime: timestamp to set watchlist entries to [required] * - curTime: UNIX timestamp of the event that triggered this job [required] * * @since 1.26 * @ingroup JobQueue */ class ActivityUpdateJob extends Job { /** * @param LinkTarget|PageReference $title * @param array $params */ public function __construct( $title, array $params ) { // If we know its a PageReference, we could just pass that to the parent // constructor, but its simpler to just extract namespace and dbkey, and // that works for both LinkTarget and PageReference $params['namespace'] = $title->getNamespace(); $params['title'] = $title->getDBkey(); parent::__construct( 'activityUpdateJob', $params ); static $required = [ 'type', 'userid', 'notifTime', 'curTime' ]; $missing = implode( ', ', array_diff( $required, array_keys( $this->params ) ) ); if ( $missing != '' ) { throw new InvalidArgumentException( "Missing parameter(s) $missing" ); } $this->removeDuplicates = true; } public function run() { if ( $this->params['type'] === 'updateWatchlistNotification' ) { $this->updateWatchlistNotification(); } else { throw new InvalidArgumentException( "Invalid 'type' '{$this->params['type']}'." ); } return true; } protected function updateWatchlistNotification() { $casTimestamp = $this->params['notifTime'] ?? $this->params['curTime']; // TODO: Inject $dbw = MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase(); // Add a "check and set" style comparison to handle conflicts. // The inequality always avoids updates when the current value // is already NULL per ANSI SQL. This is desired since NULL means // that the user is "caught up" on edits already. When the field // is non-NULL, make sure not to set it back in time or set it to // NULL when newer revisions were in fact added to the page. $casTimeCond = $dbw->expr( 'wl_notificationtimestamp', '<', $dbw->timestamp( $casTimestamp ) ); // select primary key first instead of directly update to avoid deadlocks per T204561 $wlId = $dbw->newSelectQueryBuilder() ->select( 'wl_id' ) ->from( 'watchlist' ) ->where( [ 'wl_user' => $this->params['userid'], 'wl_namespace' => $this->title->getNamespace(), 'wl_title' => $this->title->getDBkey(), $casTimeCond ] )->caller( __METHOD__ )->fetchField(); if ( !$wlId ) { return; } $dbw->newUpdateQueryBuilder() ->update( 'watchlist' ) ->set( [ 'wl_notificationtimestamp' => $dbw->timestampOrNull( $this->params['notifTime'] ) ] ) ->where( [ 'wl_id' => (int)$wlId, $casTimeCond ] ) ->caller( __METHOD__ )->execute(); } } /** @deprecated class alias since 1.43 */ class_alias( ActivityUpdateJob::class, 'ActivityUpdateJob' );
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