140 lines
4.6 KiB
PHP
140 lines
4.6 KiB
PHP
<?php
|
|
/**
|
|
* Updater for link tracking tables after a page edit.
|
|
*
|
|
* 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\Deferred\LinksUpdate;
|
|
|
|
use InvalidArgumentException;
|
|
use JobSpecification;
|
|
use MediaWiki\Category\Category;
|
|
use MediaWiki\Deferred\DeferredUpdates;
|
|
use MediaWiki\Deferred\EnqueueableDataUpdate;
|
|
use MediaWiki\MainConfigNames;
|
|
use MediaWiki\MediaWikiServices;
|
|
use MediaWiki\Page\PageIdentity;
|
|
use MediaWiki\Page\PageIdentityValue;
|
|
use MediaWiki\Parser\ParserOutput;
|
|
|
|
/**
|
|
* Update object handling the cleanup of links tables after a page was deleted.
|
|
*/
|
|
class LinksDeletionUpdate extends LinksUpdate implements EnqueueableDataUpdate {
|
|
/** @var string */
|
|
protected $timestamp;
|
|
|
|
/**
|
|
* @param PageIdentity $page Page we are updating
|
|
* @param int|null $pageId ID of the page we are updating [optional]
|
|
* @param string|null $timestamp TS_MW timestamp of deletion
|
|
*/
|
|
public function __construct( PageIdentity $page, $pageId = null, $timestamp = null ) {
|
|
if ( $pageId ) {
|
|
$this->mId = $pageId; // page ID at time of deletion
|
|
} elseif ( $page->exists() ) {
|
|
$this->mId = $page->getId();
|
|
} else {
|
|
throw new InvalidArgumentException( "Page ID not known. Page doesn't exist?" );
|
|
}
|
|
|
|
$this->timestamp = $timestamp ?: wfTimestampNow();
|
|
|
|
$fakePO = new ParserOutput();
|
|
$fakePO->setCacheTime( $timestamp );
|
|
// Use an immutable page identity to keep reference to the page id at time of deletion - T299244
|
|
$immutablePageIdentity = new PageIdentityValue(
|
|
$page->getId(),
|
|
$page->getNamespace(),
|
|
$page->getDBkey(),
|
|
$page->getWikiId()
|
|
);
|
|
parent::__construct( $immutablePageIdentity, $fakePO, false );
|
|
}
|
|
|
|
protected function doIncrementalUpdate() {
|
|
$services = MediaWikiServices::getInstance();
|
|
$config = $services->getMainConfig();
|
|
$dbProvider = $services->getConnectionProvider();
|
|
$batchSize = $config->get( MainConfigNames::UpdateRowsPerQuery );
|
|
|
|
$id = $this->mId;
|
|
$title = $this->mTitle;
|
|
|
|
$dbw = $this->getDB(); // convenience
|
|
|
|
parent::doIncrementalUpdate();
|
|
|
|
// Typically, a category is empty when deleted, so check that we don't leave
|
|
// spurious row in the category table.
|
|
if ( $title->getNamespace() === NS_CATEGORY ) {
|
|
// T166757: do the update after the main job DB commit
|
|
DeferredUpdates::addCallableUpdate( static function () use ( $title ) {
|
|
$cat = Category::newFromName( $title->getDBkey() );
|
|
$cat->refreshCountsIfSmall();
|
|
} );
|
|
}
|
|
|
|
// Delete restrictions for the deleted page
|
|
$dbw->newDeleteQueryBuilder()
|
|
->deleteFrom( 'page_restrictions' )
|
|
->where( [ 'pr_page' => $id ] )
|
|
->caller( __METHOD__ )->execute();
|
|
|
|
// Delete any redirect entry
|
|
$dbw->newDeleteQueryBuilder()
|
|
->deleteFrom( 'redirect' )
|
|
->where( [ 'rd_from' => $id ] )
|
|
->caller( __METHOD__ )->execute();
|
|
|
|
// Find recentchanges entries to clean up...
|
|
// Select RC IDs just by curid, and not by title (see T307865 and T140960)
|
|
$rcIdsForPage = $dbw->newSelectQueryBuilder()
|
|
->select( 'rc_id' )
|
|
->from( 'recentchanges' )
|
|
->where( [ $dbw->expr( 'rc_type', '!=', RC_LOG ), 'rc_cur_id' => $id ] )
|
|
->caller( __METHOD__ )->fetchFieldValues();
|
|
|
|
// T98706: delete by PK to avoid lock contention with RC delete log insertions
|
|
$rcIdBatches = array_chunk( $rcIdsForPage, $batchSize );
|
|
foreach ( $rcIdBatches as $rcIdBatch ) {
|
|
$dbw->newDeleteQueryBuilder()
|
|
->deleteFrom( 'recentchanges' )
|
|
->where( [ 'rc_id' => $rcIdBatch ] )
|
|
->caller( __METHOD__ )->execute();
|
|
if ( count( $rcIdBatches ) > 1 ) {
|
|
$dbProvider->commitAndWaitForReplication(
|
|
__METHOD__, $this->ticket, [ 'domain' => $dbw->getDomainID() ]
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function getAsJobSpecification() {
|
|
return [
|
|
'domain' => $this->getDB()->getDomainID(),
|
|
'job' => new JobSpecification(
|
|
'deleteLinks',
|
|
[ 'pageId' => $this->mId, 'timestamp' => $this->timestamp ],
|
|
[ 'removeDuplicates' => true ],
|
|
$this->mTitle
|
|
)
|
|
];
|
|
}
|
|
}
|