maintenance/cleanupRemovedModules.php

   1 <?php
   2 /**
   3  * Maintenance script to create an account and grant it administrator rights
   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  * @author Rob Church <robchur@gmail.com>
  23  */
  24
  25 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  26
  27 class CleanupRemovedModules extends Maintenance {
  28
  29         public function __construct() {
  30                 parent::__construct();
  31                 $this->mDescription = 'Remove cache entries for removed ResourceLoader modules from the database';
  32                 $this->addOption( 'batchsize', 'Delete rows in batches of this size. Default: 500', false, true );
  33                 $this->addOption( 'max-slave-lag', 'If the slave lag exceeds this many seconds, wait until it drops below this value. Default: 5', false, true );
  34         }
  35
  36         public function execute() {
  37                 $dbw = wfGetDB( DB_MASTER );
  38                 $rl = new ResourceLoader();
  39                 $moduleNames = array_keys( $rl->getModules() );
  40                 $moduleList = implode( ', ', array_map( array( $dbw, 'addQuotes' ), $moduleNames ) );
  41                 $limit = max( 1, intval( $this->getOption( 'batchsize', 500 ) ) );
  42                 $maxlag = intval( $this->getOption( 'max-slave-lag', 5 ) );
  43
  44                 $this->output( "Cleaning up module_deps table...\n" );
  45                 $i = 1;
  46                 do {
  47                         // $dbw->delete() doesn't support LIMIT :(
  48                         $where = $moduleList ? "md_module NOT IN ($moduleList)" : '1=1';
  49                         $dbw->query( "DELETE FROM module_deps WHERE $where LIMIT $limit", __METHOD__ );
  50                         $numRows = $dbw->affectedRows();
  51                         $this->output( "Batch $i: $numRows rows\n" );
  52                         $i++;
  53                         wfWaitForSlaves( $maxlag );
  54                 } while( $numRows > 0 );
  55                 $this->output( "done\n" );
  56
  57                 $this->output( "Cleaning up msg_resource table...\n" );
  58                 $i = 1;
  59                 do {
  60                         $where = $moduleList ? "mr_resource NOT IN ($moduleList)" : '1=1';
  61                         $dbw->query( "DELETE FROM msg_resource WHERE $where LIMIT $limit", __METHOD__ );
  62                         $numRows = $dbw->affectedRows();
  63                         $this->output( "Batch $i: $numRows rows\n" );
  64                         $i++;
  65                         wfWaitForSlaves( $maxlag );
  66                 } while( $numRows > 0 );
  67                 $this->output( "done\n" );
  68
  69                 $this->output( "Cleaning up msg_resource_links table...\n" );
  70                 $i = 1;
  71                 do {
  72                         $where = $moduleList ? "mrl_resource NOT IN ($moduleList)" : '1=1';
  73                         $dbw->query( "DELETE FROM msg_resource_links WHERE $where LIMIT $limit", __METHOD__ );
  74                         $numRows = $dbw->affectedRows();
  75                         $this->output( "Batch $i: $numRows rows\n" );
  76                         $i++;
  77                         wfWaitForSlaves( $maxlag );
  78                 } while( $numRows > 0 );
  79                 $this->output( "done\n" );
  80         }
  81 }
  82
  83 $maintClass = "CleanupRemovedModules";
  84 require_once( DO_MAINTENANCE );