maintenance/populateExternallinksIndex60.php

   1 <?php
   2 /**
   3  * Populates the el_index_60 field in the externallinks table.
   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 MediaWiki\MediaWikiServices;
  27
  28 /**
  29  * Maintenance script that populates the el_index_60 field in the externallinks
  30  * table.
  31  *
  32  * @ingroup Maintenance
  33  * @since 1.32
  34  */
  35 class PopulateExternallinksIndex60 extends LoggedUpdateMaintenance {
  36         public function __construct() {
  37                 parent::__construct();
  38                 $this->addDescription(
  39                         'Populates the el_index_60 field in the externallinks table' );
  40                 $this->setBatchSize( 200 );
  41         }
  42
  43         protected function getUpdateKey() {
  44                 return 'populate externallinks.el_index_60';
  45         }
  46
  47         protected function updateSkippedMessage() {
  48                 return 'externallinks.el_index_60 already populated.';
  49         }
  50
  51         protected function doDBUpdates() {
  52                 $dbw = $this->getDB( DB_MASTER );
  53                 $this->output( "Populating externallinks.el_index_60...\n" );
  54
  55                 $count = 0;
  56                 $start = 0;
  57                 $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
  58                 $last = $dbw->selectField( 'externallinks', 'MAX(el_id)', '', __METHOD__ );
  59                 while ( $start <= $last ) {
  60                         $end = $start + $this->mBatchSize;
  61                         $this->output( "el_id $start - $end of $last\n" );
  62                         $res = $dbw->select( 'externallinks', [ 'el_id', 'el_index' ],
  63                                 [
  64                                         "el_id > $start",
  65                                         "el_id <= $end",
  66                                         'el_index_60' => '',
  67                                 ],
  68                                 __METHOD__,
  69                                 [ 'ORDER BY' => 'el_id' ]
  70                         );
  71                         foreach ( $res as $row ) {
  72                                 $count++;
  73                                 $dbw->update( 'externallinks',
  74                                         [
  75                                                 'el_index_60' => substr( $row->el_index, 0, 60 ),
  76                                         ],
  77                                         [
  78                                                 'el_id' => $row->el_id,
  79                                         ], __METHOD__
  80                                 );
  81                         }
  82                         $lbFactory->waitForReplication();
  83                         $start = $end;
  84                 }
  85                 $this->output( "Done, $count rows updated.\n" );
  86
  87                 return true;
  88         }
  89 }
  90
  91 $maintClass = PopulateExternallinksIndex60::class;
  92 require_once RUN_MAINTENANCE_IF_MAIN;