DeleteLinksJob.php

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<?php
namespace MediaWiki\Page;
 
use MediaWiki\Deferred\LinksUpdate\LinksDeletionUpdate;
use MediaWiki\Deferred\LinksUpdate\LinksUpdate;
use MediaWiki\JobQueue\Job;
use MediaWiki\MediaWikiServices;
use MediaWiki\Title\Title;
use Wikimedia\Rdbms\IDBAccessObject;
 
class DeleteLinksJob extends Job {
    public function __construct( Title $title, array $params ) {
        parent::__construct( 'deleteLinks', $title, $params );
        $this->removeDuplicates = true;
    }
 
    public function run() {
        if ( $this->title === null ) {
            $this->setLastError( "deleteLinks: Invalid title" );
            return false;
        }
 
        $pageId = $this->params['pageId'];
 
        // Serialize links updates by page ID so they see each others' changes
        $dbw = MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase();
        $scopedLock = LinksUpdate::acquirePageLock( $dbw, $pageId, 'job' );
        if ( $scopedLock === null ) {
            $this->setLastError( 'LinksUpdate already running for this page, try again later.' );
            return false;
        }
 
        $services = MediaWikiServices::getInstance();
        $wikiPageFactory = $services->getWikiPageFactory();
        if ( $wikiPageFactory->newFromID( $pageId, IDBAccessObject::READ_LATEST ) ) {
            // The page was restored somehow or something went wrong
            $this->setLastError( "deleteLinks: Page #$pageId exists" );
            return false;
        }
 
        $dbProvider = $services->getConnectionProvider();
        $timestamp = $this->params['timestamp'] ?? null;
        $page = $wikiPageFactory->newFromTitle( $this->title ); // title when deleted
 
        $update = new LinksDeletionUpdate( $page, $pageId, $timestamp );
        $update->setTransactionTicket( $dbProvider->getEmptyTransactionTicket( __METHOD__ ) );
        $update->doUpdate();
 
        return true;
    }
}