maintenance/attachLatest.php

   1 <?php
   2 /**
   3  * Corrects wrong values in the `page_latest` field in the database.
   4  *
   5  * Copyright © 2005 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  * @ingroup Maintenance
  25  */
  26
  27 use MediaWiki\Revision\RevisionLookup;
  28 use MediaWiki\Title\Title;
  29
  30 require_once __DIR__ . '/Maintenance.php';
  31
  32 /**
  33  * Maintenance script to correct wrong values in the `page_latest` field
  34  * in the database.
  35  *
  36  * @ingroup Maintenance
  37  */
  38 class AttachLatest extends Maintenance {
  39         public function __construct() {
  40                 parent::__construct();
  41                 $this->addOption( "fix", "Actually fix the entries, will dry run otherwise" );
  42                 $this->addOption( "regenerate-all",
  43                         "Regenerate the page_latest field for all records in table page" );
  44                 $this->addDescription( 'Fix page_latest entries in the page table' );
  45         }
  46
  47         public function execute() {
  48                 $this->output( "Looking for pages with page_latest set to 0...\n" );
  49                 $dbw = $this->getDB( DB_PRIMARY );
  50                 $conds = [ 'page_latest' => 0 ];
  51                 if ( $this->hasOption( 'regenerate-all' ) ) {
  52                         $conds = '';
  53                 }
  54                 $result = $dbw->newSelectQueryBuilder()
  55                         ->select( [ 'page_id', 'page_namespace', 'page_title' ] )
  56                         ->from( 'page' )
  57                         ->where( $conds )
  58                         ->caller( __METHOD__ )
  59                         ->fetchResultSet();
  60
  61                 $services = $this->getServiceContainer();
  62                 $dbDomain = $services->getDBLoadBalancerFactory()->getLocalDomainID();
  63                 $wikiPageFactory = $services->getWikiPageFactory();
  64                 $revisionLookup = $services->getRevisionLookup();
  65
  66                 $n = 0;
  67                 foreach ( $result as $row ) {
  68                         $pageId = intval( $row->page_id );
  69                         $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  70                         $name = $title->getPrefixedText();
  71                         $latestTime = $dbw->newSelectQueryBuilder()
  72                                 ->select( 'MAX(rev_timestamp)' )
  73                                 ->from( 'revision' )
  74                                 ->where( [ 'rev_page' => $pageId ] )
  75                                 ->caller( __METHOD__ )
  76                                 ->fetchField();
  77                         if ( !$latestTime ) {
  78                                 $this->output( "$dbDomain $pageId [[$name]] can't find latest rev time?!\n" );
  79                                 continue;
  80                         }
  81
  82                         $revRecord = $revisionLookup->getRevisionByTimestamp( $title, $latestTime, RevisionLookup::READ_LATEST );
  83                         if ( $revRecord === null ) {
  84                                 $this->output(
  85                                         "$dbDomain $pageId [[$name]] latest time $latestTime, can't find revision id\n"
  86                                 );
  87                                 continue;
  88                         }
  89
  90                         $id = $revRecord->getId();
  91                         $this->output( "$dbDomain $pageId [[$name]] latest time $latestTime, rev id $id\n" );
  92                         if ( $this->hasOption( 'fix' ) ) {
  93                                 $page = $wikiPageFactory->newFromTitle( $title );
  94                                 $page->updateRevisionOn( $dbw, $revRecord );
  95                                 $this->waitForReplication();
  96                         }
  97                         $n++;
  98                 }
  99                 $this->output( "Done! Processed $n pages.\n" );
 100                 if ( !$this->hasOption( 'fix' ) ) {
 101                         $this->output( "This was a dry run; rerun with --fix to update page_latest.\n" );
 102                 }
 103         }
 104 }
 105
 106 $maintClass = AttachLatest::class;
 107 require_once RUN_MAINTENANCE_IF_MAIN;