MediaWiki  master
DeleteLinksJob.php
Go to the documentation of this file.
1 <?php
25 
33 class DeleteLinksJob extends Job {
34  public function __construct( Title $title, array $params ) {
35  parent::__construct( 'deleteLinks', $title, $params );
36  $this->removeDuplicates = true;
37  }
38 
39  public function run() {
40  if ( $this->title === null ) {
41  $this->setLastError( "deleteLinks: Invalid title" );
42  return false;
43  }
44 
45  $pageId = $this->params['pageId'];
46 
47  // Serialize links updates by page ID so they see each others' changes
48  $scopedLock = LinksUpdate::acquirePageLock( wfGetDB( DB_PRIMARY ), $pageId, 'job' );
49  if ( $scopedLock === null ) {
50  $this->setLastError( 'LinksUpdate already running for this page, try again later.' );
51  return false;
52  }
53 
54  $services = MediaWikiServices::getInstance();
55  $wikiPageFactory = $services->getWikiPageFactory();
56  if ( $wikiPageFactory->newFromID( $pageId, WikiPage::READ_LATEST ) ) {
57  // The page was restored somehow or something went wrong
58  $this->setLastError( "deleteLinks: Page #$pageId exists" );
59  return false;
60  }
61 
62  $factory = $services->getDBLoadBalancerFactory();
63  $timestamp = $this->params['timestamp'] ?? null;
64  $page = $wikiPageFactory->newFromTitle( $this->title ); // title when deleted
65 
66  $update = new LinksDeletionUpdate( $page, $pageId, $timestamp );
67  $update->setTransactionTicket( $factory->getEmptyTransactionTicket( __METHOD__ ) );
68  $update->doUpdate();
69 
70  return true;
71  }
72 }
wfGetDB( $db, $groups=[], $wiki=false)
Get a Database object.
Job to prune link tables for pages that were deleted.
__construct(Title $title, array $params)
run()
Run the job.
Class to both describe a background job and handle jobs.
Definition: Job.php:40
Title $title
Definition: Job.php:51
setLastError( $error)
Definition: Job.php:432
array $params
Array of job parameters.
Definition: Job.php:45
Update object handling the cleanup of links tables after a page was deleted.
Class the manages updates of *_link tables as well as similar extension-managed tables.
Definition: LinksUpdate.php:54
Service locator for MediaWiki core services.
Represents a title within MediaWiki.
Definition: Title.php:76
const DB_PRIMARY
Definition: defines.php:28