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deleteSelfExternals.php
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deleteSelfExternals.php
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<?php
/**
* Delete self-references to $wgServer from the externallinks table.
*
* 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 Maintenance
*/
use MediaWiki\ExternalLinks\LinkFilter;
use MediaWiki\MainConfigNames;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
/**
* Maintenance script that deletes self-references to $wgServer
* from the externallinks table.
*
* @ingroup Maintenance
*/
class DeleteSelfExternals extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Delete self-references to $wgServer from externallinks' );
$this->setBatchSize( 1000 );
}
public function execute() {
// Extract the host and scheme from $wgServer
$server = $this->getConfig()->get( MainConfigNames::Server );
$bits = $this->getServiceContainer()->getUrlUtils()->parse( $server );
if ( !$bits ) {
$this->fatalError( 'Could not parse $wgServer' );
}
$this->output( "Deleting self externals from $server\n" );
$db = $this->getPrimaryDB();
// If it's protocol-relative, we need to do both http and https.
// Otherwise, just do the specified scheme.
$host = $bits['host'];
if ( isset( $bits['port'] ) ) {
$host .= ':' . $bits['port'];
}
if ( $bits['scheme'] != '' ) {
$conds = [ LinkFilter::getQueryConditions( $host, [ 'protocol' => $bits['scheme'] . '://' ] ) ];
} else {
$conds = [
LinkFilter::getQueryConditions( $host, [ 'protocol' => 'http://' ] ),
LinkFilter::getQueryConditions( $host, [ 'protocol' => 'https://' ] ),
];
}
// Convert the array of $conds into an IExpression object for use in the DELETE query
// The use of array_filter is just there for a sanity check, as LinkFilter::getQueryConditions
// only returns false if the host was invalid (we have already validated this above).
$conds = array_map( static function ( $cond ) use ( $db ) {
return $db->andExpr( $cond );
}, array_filter( $conds ) );
$domainExpr = $db->orExpr( $conds );
$totalRows = 0;
$batchStart = 0;
$batchEnd = $batchStart + $this->getBatchSize();
do {
$this->output( "Deleting self-externals with el_id $batchStart to $batchEnd\n" );
$db->newDeleteQueryBuilder()
->deleteFrom( 'externallinks' )
->where( $domainExpr )
->andWhere( $db->expr( 'el_id', '>', $batchStart ) )
->andWhere( $db->expr( 'el_id', '<=', $batchEnd ) )
->caller( __METHOD__ )
->execute();
$rowsDeletedInThisBatch = $db->affectedRows();
$totalRows += $rowsDeletedInThisBatch;
$batchStart += $this->getBatchSize();
$batchEnd += $this->getBatchSize();
$this->waitForReplication();
} while ( $rowsDeletedInThisBatch );
$this->output( "done; deleted $totalRows rows\n" );
}
}
// @codeCoverageIgnoreStart
$maintClass = DeleteSelfExternals::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd

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Wed, Sep 10, 14:38 (7 m, 53 s)
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deleteSelfExternals.php (3 KB)

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