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| 1 | <?php |
| 2 | /** |
| 3 | * Delete revisions which refer to a nonexisting page. |
| 4 | * Sometimes manual deletion done in a rush leaves crap in the database. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 19 | * http://www.gnu.org/copyleft/gpl.html |
| 20 | * |
| 21 | * @file |
| 22 | * @ingroup Maintenance |
| 23 | * @author Rob Church <robchur@gmail.com> |
| 24 | * @todo More efficient cleanup of text records |
| 25 | */ |
| 26 | |
| 27 | // @codeCoverageIgnoreStart |
| 28 | require_once __DIR__ . '/Maintenance.php'; |
| 29 | // @codeCoverageIgnoreEnd |
| 30 | |
| 31 | use MediaWiki\Maintenance\Maintenance; |
| 32 | use Wikimedia\Rdbms\IDatabase; |
| 33 | |
| 34 | /** |
| 35 | * Maintenance script that deletes revisions which refer to a nonexisting page. |
| 36 | * |
| 37 | * @ingroup Maintenance |
| 38 | */ |
| 39 | class DeleteOrphanedRevisions extends Maintenance { |
| 40 | public function __construct() { |
| 41 | parent::__construct(); |
| 42 | $this->addDescription( |
| 43 | 'Maintenance script to delete revisions which refer to a nonexisting page' ); |
| 44 | $this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' ); |
| 45 | } |
| 46 | |
| 47 | public function execute() { |
| 48 | $this->output( "Delete Orphaned Revisions\n" ); |
| 49 | |
| 50 | $report = $this->hasOption( 'report' ); |
| 51 | |
| 52 | $dbw = $this->getPrimaryDB(); |
| 53 | $this->beginTransaction( $dbw, __METHOD__ ); |
| 54 | |
| 55 | # Find all the orphaned revisions |
| 56 | $this->output( "Checking for orphaned revisions..." ); |
| 57 | $res = $dbw->newSelectQueryBuilder() |
| 58 | ->select( 'rev_id' ) |
| 59 | ->from( 'revision' ) |
| 60 | ->leftJoin( 'page', null, 'rev_page = page_id' ) |
| 61 | ->where( [ 'page_namespace' => null ] ) |
| 62 | ->caller( 'deleteOrphanedRevisions' ) |
| 63 | ->fetchResultSet(); |
| 64 | |
| 65 | # Stash 'em all up for deletion (if needed) |
| 66 | $revisions = []; |
| 67 | foreach ( $res as $row ) { |
| 68 | $revisions[] = $row->rev_id; |
| 69 | } |
| 70 | $count = count( $revisions ); |
| 71 | $this->output( "found {$count}.\n" ); |
| 72 | |
| 73 | # Nothing to do? |
| 74 | if ( $report || $count == 0 ) { |
| 75 | $this->commitTransaction( $dbw, __METHOD__ ); |
| 76 | return; |
| 77 | } |
| 78 | |
| 79 | # Delete each revision |
| 80 | $this->output( "Deleting..." ); |
| 81 | $this->deleteRevs( $revisions, $dbw ); |
| 82 | $this->output( "done.\n" ); |
| 83 | |
| 84 | # Close the transaction and call the script to purge unused text records |
| 85 | $this->commitTransaction( $dbw, __METHOD__ ); |
| 86 | $this->purgeRedundantText( true ); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Delete one or more revisions from the database |
| 91 | * Do this inside a transaction |
| 92 | * |
| 93 | * @param int[] $id Array of revision id values |
| 94 | * @param IDatabase $dbw Primary DB handle |
| 95 | */ |
| 96 | private function deleteRevs( array $id, $dbw ) { |
| 97 | $dbw->newDeleteQueryBuilder() |
| 98 | ->deleteFrom( 'revision' ) |
| 99 | ->where( [ 'rev_id' => $id ] ) |
| 100 | ->caller( __METHOD__ )->execute(); |
| 101 | |
| 102 | // Delete from ip_changes should a record exist. |
| 103 | $dbw->newDeleteQueryBuilder() |
| 104 | ->deleteFrom( 'ip_changes' ) |
| 105 | ->where( [ 'ipc_rev_id' => $id ] ) |
| 106 | ->caller( __METHOD__ )->execute(); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | // @codeCoverageIgnoreStart |
| 111 | $maintClass = DeleteOrphanedRevisions::class; |
| 112 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 113 | // @codeCoverageIgnoreEnd |