cleanupRemovedModules.php

Go to the documentation of this file.

<?php
use MediaWiki\MediaWikiServices;
use Wikimedia\Rdbms\IDatabase;

require_once __DIR__ . '/Maintenance.php';

class CleanupRemovedModules extends Maintenance {

    public function __construct() {
        parent::__construct();
        $this->addDescription(
            'Remove cache entries for removed ResourceLoader modules from the database' );
        $this->setBatchSize( 500 );
    }

    public function execute() {
        $this->output( "Cleaning up module_deps table...\n" );

        $dbw = $this->getDB( DB_MASTER );
        $rl = MediaWikiServices::getInstance()->getResourceLoader();
        $moduleNames = $rl->getModuleNames();
        $res = $dbw->select( 'module_deps',
            [ 'md_module', 'md_skin' ],
            $moduleNames ? 'md_module NOT IN (' . $dbw->makeList( $moduleNames ) . ')' : '1=1',
            __METHOD__
        );
        $rows = iterator_to_array( $res, false );

        $modDeps = $dbw->tableName( 'module_deps' );
        $i = 1;
        foreach ( array_chunk( $rows, $this->getBatchSize() ) as $chunk ) {
            // WHERE ( mod=A AND skin=A ) OR ( mod=A AND skin=B) ..
            $conds = array_map( function ( stdClass $row ) use ( $dbw ) {
                return $dbw->makeList( (array)$row, IDatabase::LIST_AND );
            }, $chunk );
            $conds = $dbw->makeList( $conds, IDatabase::LIST_OR );

            $this->beginTransaction( $dbw, __METHOD__ );
            $dbw->query( "DELETE FROM $modDeps WHERE $conds", __METHOD__ );
            $numRows = $dbw->affectedRows();
            $this->output( "Batch $i: $numRows rows\n" );
            $this->commitTransaction( $dbw, __METHOD__ );

            $i++;
        }

        $this->output( "Done\n" );
    }
}

$maintClass = CleanupRemovedModules::class;
require_once RUN_MAINTENANCE_IF_MAIN;