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<?php
/**
* Delete revisions which refer to a nonexisting page.
* Sometimes manual deletion done in a rush leaves crap in the database.
*
* 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
* @author Rob Church <robchur@gmail.com>
* @todo More efficient cleanup of text records
*/
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
use MediaWiki\Maintenance\Maintenance;
use Wikimedia\Rdbms\IDatabase;
/**
* Maintenance script that deletes revisions which refer to a nonexisting page.
*
* @ingroup Maintenance
*/
class DeleteOrphanedRevisions extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription(
'Maintenance script to delete revisions which refer to a nonexisting page' );
$this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' );
}
public function execute() {
$this->output( "Delete Orphaned Revisions\n" );
$report = $this->hasOption( 'report' );
$dbw = $this->getPrimaryDB();
$this->beginTransaction( $dbw, __METHOD__ );
# Find all the orphaned revisions
$this->output( "Checking for orphaned revisions..." );
$res = $dbw->newSelectQueryBuilder()
->select( 'rev_id' )
->from( 'revision' )
->leftJoin( 'page', null, 'rev_page = page_id' )
->where( [ 'page_namespace' => null ] )
->caller( 'deleteOrphanedRevisions' )
->fetchResultSet();
# Stash 'em all up for deletion (if needed)
$revisions = [];
foreach ( $res as $row ) {
$revisions[] = $row->rev_id;
}
$count = count( $revisions );
$this->output( "found {$count}.\n" );
# Nothing to do?
if ( $report || $count == 0 ) {
$this->commitTransaction( $dbw, __METHOD__ );
return;
}
# Delete each revision
$this->output( "Deleting..." );
$this->deleteRevs( $revisions, $dbw );
$this->output( "done.\n" );
# Close the transaction and call the script to purge unused text records
$this->commitTransaction( $dbw, __METHOD__ );
$this->purgeRedundantText( true );
}
/**
* Delete one or more revisions from the database
* Do this inside a transaction
*
* @param int[] $id Array of revision id values
* @param IDatabase $dbw Primary DB handle
*/
private function deleteRevs( array $id, $dbw ) {
$dbw->newDeleteQueryBuilder()
->deleteFrom( 'revision' )
->where( [ 'rev_id' => $id ] )
->caller( __METHOD__ )->execute();
// Delete from ip_changes should a record exist.
$dbw->newDeleteQueryBuilder()
->deleteFrom( 'ip_changes' )
->where( [ 'ipc_rev_id' => $id ] )
->caller( __METHOD__ )->execute();
}
}
// @codeCoverageIgnoreStart
$maintClass = DeleteOrphanedRevisions::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd
|
