1 files changed, 81 insertions, 0 deletions
diff --git a/www/wiki/maintenance/cleanupRemovedModules.php b/www/wiki/maintenance/cleanupRemovedModules.php
new file mode 100644
index 00000000..63838d25
--- /dev/null
+++ b/www/wiki/maintenance/cleanupRemovedModules.php
@@ -0,0 +1,81 @@
+<?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
+ */
+
+use MediaWiki\MediaWikiServices;
+use Wikimedia\Rdbms\IDatabase;
+
+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->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 = new ResourceLoader( MediaWikiServices::getInstance()->getMainConfig() );
+		$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;