MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / includes / jobqueue / jobs / DeleteLinksJob.php

diff --git a/includes/jobqueue/jobs/DeleteLinksJob.php b/includes/jobqueue/jobs/DeleteLinksJob.php
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+<?php
+/**
+ * Job to update link tables for pages
+ *
+ * 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
+ * @ingroup JobQueue
+ */
+use \MediaWiki\MediaWikiServices;
+
+/**
+ * Job to prune link tables for pages that were deleted
+ *
+ * Only DataUpdate classes should construct these jobs
+ *
+ * @ingroup JobQueue
+ * @since 1.27
+ */
+class DeleteLinksJob extends Job {
+       function __construct( Title $title, array $params ) {
+               parent::__construct( 'deleteLinks', $title, $params );
+               $this->removeDuplicates = true;
+       }
+
+       function run() {
+               if ( is_null( $this->title ) ) {
+                       $this->setLastError( "deleteLinks: Invalid title" );
+                       return false;
+               }
+
+               $pageId = $this->params['pageId'];
+
+               // Serialize links updates by page ID so they see each others' changes
+               $scopedLock = LinksUpdate::acquirePageLock( wfGetDB( DB_MASTER ), $pageId, 'job' );
+
+               if ( WikiPage::newFromID( $pageId, WikiPage::READ_LATEST ) ) {
+                       // The page was restored somehow or something went wrong
+                       $this->setLastError( "deleteLinks: Page #$pageId exists" );
+                       return false;
+               }
+
+               $factory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
+               $timestamp = isset( $this->params['timestamp'] ) ? $this->params['timestamp'] : null;
+               $page = WikiPage::factory( $this->title ); // title when deleted
+
+               $update = new LinksDeletionUpdate( $page, $pageId, $timestamp );
+               $update->setTransactionTicket( $factory->getEmptyTransactionTicket( __METHOD__ ) );
+               $update->doUpdate();
+
+               return true;
+       }
+}