maintenance/populateRecentChangesSource.php

   1 <?php
   2 /**
   3  * Upgrade script to populate the rc_source field
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 use Wikimedia\Rdbms\IDatabase;
  27
  28 /**
  29  * Maintenance script to populate the rc_source field.
  30  *
  31  * @ingroup Maintenance
  32  * @since 1.22
  33  */
  34 class PopulateRecentChangesSource extends LoggedUpdateMaintenance {
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->addDescription(
  38                         'Populates rc_source field of the recentchanges table with the data in rc_type.' );
  39                 $this->setBatchSize( 100 );
  40         }
  41
  42         protected function doDBUpdates() {
  43                 $dbw = $this->getDB( DB_MASTER );
  44                 if ( !$dbw->fieldExists( 'recentchanges', 'rc_source' ) ) {
  45                         $this->error( 'rc_source field in recentchanges table does not exist.' );
  46                 }
  47
  48                 $start = $dbw->selectField( 'recentchanges', 'MIN(rc_id)', false, __METHOD__ );
  49                 if ( !$start ) {
  50                         $this->output( "Nothing to do.\n" );
  51
  52                         return true;
  53                 }
  54                 $end = $dbw->selectField( 'recentchanges', 'MAX(rc_id)', false, __METHOD__ );
  55                 $end += $this->mBatchSize - 1;
  56                 $blockStart = $start;
  57                 $blockEnd = $start + $this->mBatchSize - 1;
  58
  59                 $updatedValues = $this->buildUpdateCondition( $dbw );
  60
  61                 while ( $blockEnd <= $end ) {
  62                         $cond = "rc_id BETWEEN $blockStart AND $blockEnd";
  63
  64                         $dbw->update(
  65                                 'recentchanges',
  66                                 [ $updatedValues ],
  67                                 [
  68                                         "rc_source = ''",
  69                                         "rc_id BETWEEN $blockStart AND $blockEnd"
  70                                 ],
  71                                 __METHOD__
  72                         );
  73
  74                         $this->output( "." );
  75                         wfWaitForSlaves();
  76
  77                         $blockStart += $this->mBatchSize;
  78                         $blockEnd += $this->mBatchSize;
  79                 }
  80
  81                 $this->output( "\nDone.\n" );
  82         }
  83
  84         protected function getUpdateKey() {
  85                 return __CLASS__;
  86         }
  87
  88         protected function buildUpdateCondition( IDatabase $dbw ) {
  89                 $rcNew = $dbw->addQuotes( RC_NEW );
  90                 $rcSrcNew = $dbw->addQuotes( RecentChange::SRC_NEW );
  91                 $rcEdit = $dbw->addQuotes( RC_EDIT );
  92                 $rcSrcEdit = $dbw->addQuotes( RecentChange::SRC_EDIT );
  93                 $rcLog = $dbw->addQuotes( RC_LOG );
  94                 $rcSrcLog = $dbw->addQuotes( RecentChange::SRC_LOG );
  95                 $rcExternal = $dbw->addQuotes( RC_EXTERNAL );
  96                 $rcSrcExternal = $dbw->addQuotes( RecentChange::SRC_EXTERNAL );
  97
  98                 return "rc_source = CASE
  99                                         WHEN rc_type = $rcNew THEN $rcSrcNew
 100                                         WHEN rc_type = $rcEdit THEN $rcSrcEdit
 101                                         WHEN rc_type = $rcLog THEN $rcSrcLog
 102                                         WHEN rc_type = $rcExternal THEN $rcSrcExternal
 103                                         ELSE ''
 104                                 END";
 105         }
 106 }
 107
 108 $maintClass = "PopulateRecentChangesSource";
 109 require_once RUN_MAINTENANCE_IF_MAIN;