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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 | require_once __DIR__ . '/Maintenance.php'; |
28 | |
29 | use Wikimedia\Rdbms\IDatabase; |
30 | |
31 | /** |
32 | * Maintenance script that deletes revisions which refer to a nonexisting page. |
33 | * |
34 | * @ingroup Maintenance |
35 | */ |
36 | class DeleteOrphanedRevisions extends Maintenance { |
37 | public function __construct() { |
38 | parent::__construct(); |
39 | $this->addDescription( |
40 | 'Maintenance script to delete revisions which refer to a nonexisting page' ); |
41 | $this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' ); |
42 | } |
43 | |
44 | public function execute() { |
45 | $this->output( "Delete Orphaned Revisions\n" ); |
46 | |
47 | $report = $this->hasOption( 'report' ); |
48 | |
49 | $dbw = $this->getPrimaryDB(); |
50 | $this->beginTransaction( $dbw, __METHOD__ ); |
51 | |
52 | # Find all the orphaned revisions |
53 | $this->output( "Checking for orphaned revisions..." ); |
54 | $res = $dbw->newSelectQueryBuilder() |
55 | ->select( 'rev_id' ) |
56 | ->from( 'revision' ) |
57 | ->leftJoin( 'page', null, 'rev_page = page_id' ) |
58 | ->where( [ 'page_namespace' => null ] ) |
59 | ->caller( 'deleteOrphanedRevisions' ) |
60 | ->fetchResultSet(); |
61 | |
62 | # Stash 'em all up for deletion (if needed) |
63 | $revisions = []; |
64 | foreach ( $res as $row ) { |
65 | $revisions[] = $row->rev_id; |
66 | } |
67 | $count = count( $revisions ); |
68 | $this->output( "found {$count}.\n" ); |
69 | |
70 | # Nothing to do? |
71 | if ( $report || $count == 0 ) { |
72 | $this->commitTransaction( $dbw, __METHOD__ ); |
73 | return; |
74 | } |
75 | |
76 | # Delete each revision |
77 | $this->output( "Deleting..." ); |
78 | $this->deleteRevs( $revisions, $dbw ); |
79 | $this->output( "done.\n" ); |
80 | |
81 | # Close the transaction and call the script to purge unused text records |
82 | $this->commitTransaction( $dbw, __METHOD__ ); |
83 | $this->purgeRedundantText( true ); |
84 | } |
85 | |
86 | /** |
87 | * Delete one or more revisions from the database |
88 | * Do this inside a transaction |
89 | * |
90 | * @param int[] $id Array of revision id values |
91 | * @param IDatabase $dbw Primary DB handle |
92 | */ |
93 | private function deleteRevs( array $id, $dbw ) { |
94 | $dbw->newDeleteQueryBuilder() |
95 | ->deleteFrom( 'revision' ) |
96 | ->where( [ 'rev_id' => $id ] ) |
97 | ->caller( __METHOD__ )->execute(); |
98 | |
99 | // Delete from ip_changes should a record exist. |
100 | $dbw->newDeleteQueryBuilder() |
101 | ->deleteFrom( 'ip_changes' ) |
102 | ->where( [ 'ipc_rev_id' => $id ] ) |
103 | ->caller( __METHOD__ )->execute(); |
104 | } |
105 | } |
106 | |
107 | $maintClass = DeleteOrphanedRevisions::class; |
108 | require_once RUN_MAINTENANCE_IF_MAIN; |