includes/jobqueue/jobs/DeleteLinksJob.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  */
  20
  21 use MediaWiki\Deferred\LinksUpdate\LinksDeletionUpdate;
  22 use MediaWiki\Deferred\LinksUpdate\LinksUpdate;
  23 use MediaWiki\MediaWikiServices;
  24 use MediaWiki\Title\Title;
  25 use Wikimedia\Rdbms\IDBAccessObject;
  26
  27 /**
  28  * Job to prune link tables for pages that were deleted
  29  *
  30  * @internal For use by core in LinksDeletionUpdate only.
  31  * @since 1.27
  32  * @ingroup JobQueue
  33  */
  34 class DeleteLinksJob extends Job {
  35         public function __construct( Title $title, array $params ) {
  36                 parent::__construct( 'deleteLinks', $title, $params );
  37                 $this->removeDuplicates = true;
  38         }
  39
  40         public function run() {
  41                 if ( $this->title === null ) {
  42                         $this->setLastError( "deleteLinks: Invalid title" );
  43                         return false;
  44                 }
  45
  46                 $pageId = $this->params['pageId'];
  47
  48                 // Serialize links updates by page ID so they see each others' changes
  49                 $dbw = MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase();
  50                 $scopedLock = LinksUpdate::acquirePageLock( $dbw, $pageId, 'job' );
  51                 if ( $scopedLock === null ) {
  52                         $this->setLastError( 'LinksUpdate already running for this page, try again later.' );
  53                         return false;
  54                 }
  55
  56                 $services = MediaWikiServices::getInstance();
  57                 $wikiPageFactory = $services->getWikiPageFactory();
  58                 if ( $wikiPageFactory->newFromID( $pageId, IDBAccessObject::READ_LATEST ) ) {
  59                         // The page was restored somehow or something went wrong
  60                         $this->setLastError( "deleteLinks: Page #$pageId exists" );
  61                         return false;
  62                 }
  63
  64                 $dbProvider = $services->getConnectionProvider();
  65                 $timestamp = $this->params['timestamp'] ?? null;
  66                 $page = $wikiPageFactory->newFromTitle( $this->title ); // title when deleted
  67
  68                 $update = new LinksDeletionUpdate( $page, $pageId, $timestamp );
  69                 $update->setTransactionTicket( $dbProvider->getEmptyTransactionTicket( __METHOD__ ) );
  70                 $update->doUpdate();
  71
  72                 return true;
  73         }
  74 }