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<?php
/**
* Remove cache entries for removed ResourceLoader modules from the database.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
* @author Roan Kattouw
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script to remove cache entries for removed ResourceLoader modules
* from the database.
*
* @ingroup Maintenance
*/
class CleanupRemovedModules extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = 'Remove cache entries for removed ResourceLoader modules from the database';
$this->addOption( 'batchsize', 'Delete rows in batches of this size. Default: 500', false, true );
$this->addOption( 'max-slave-lag', 'If the slave lag exceeds this many seconds, wait until it drops below this value. Default: 5', false, true );
}
public function execute() {
$dbw = wfGetDB( DB_MASTER );
$rl = new ResourceLoader();
$moduleNames = $rl->getModuleNames();
$moduleList = implode( ', ', array_map( array( $dbw, 'addQuotes' ), $moduleNames ) );
$limit = max( 1, intval( $this->getOption( 'batchsize', 500 ) ) );
$maxlag = intval( $this->getOption( 'max-slave-lag', 5 ) );
$this->output( "Cleaning up module_deps table...\n" );
$i = 1;
$modDeps = $dbw->tableName( 'module_deps' );
do {
// $dbw->delete() doesn't support LIMIT :(
$where = $moduleList ? "md_module NOT IN ($moduleList)" : '1=1';
$dbw->query( "DELETE FROM $modDeps WHERE $where LIMIT $limit", __METHOD__ );
$numRows = $dbw->affectedRows();
$this->output( "Batch $i: $numRows rows\n" );
$i++;
wfWaitForSlaves( $maxlag );
} while ( $numRows > 0 );
$this->output( "done\n" );
$this->output( "Cleaning up msg_resource table...\n" );
$i = 1;
$mrRes = $dbw->tableName( 'msg_resource' );
do {
$where = $moduleList ? "mr_resource NOT IN ($moduleList)" : '1=1';
$dbw->query( "DELETE FROM $mrRes WHERE $where LIMIT $limit", __METHOD__ );
$numRows = $dbw->affectedRows();
$this->output( "Batch $i: $numRows rows\n" );
$i++;
wfWaitForSlaves( $maxlag );
} while ( $numRows > 0 );
$this->output( "done\n" );
$this->output( "Cleaning up msg_resource_links table...\n" );
$i = 1;
$msgResLinks = $dbw->tableName( 'msg_resource_links' );
do {
$where = $moduleList ? "mrl_resource NOT IN ($moduleList)" : '1=1';
$dbw->query( "DELETE FROM $msgResLinks WHERE $where LIMIT $limit", __METHOD__ );
$numRows = $dbw->affectedRows();
$this->output( "Batch $i: $numRows rows\n" );
$i++;
wfWaitForSlaves( $maxlag );
} while ( $numRows > 0 );
$this->output( "done\n" );
}
}
$maintClass = "CleanupRemovedModules";
require_once RUN_MAINTENANCE_IF_MAIN;
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