feat: add command to clear memcache

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

core/Command/Memcache/DistributedClear.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\Core\Command\Memcache;
+
+use OC\Core\Command\Base;
+use OCP\ICacheFactory;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class DistributedClear extends Base {
+	public function __construct(
+		protected ICacheFactory $cacheFactory,
+	) {
+		parent::__construct();
+	}
+
+	protected function configure(): void {
+		$this
+			->setName('memcache:distributed:clear')
+			->setDescription('Clear values from the distributed memcache')
+			->addOption('prefix', null, InputOption::VALUE_REQUIRED, 'Only remove keys matching the prefix');
+		parent::configure();
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		$cache = $this->cacheFactory->createDistributed();
+		$prefix = $input->getOption('prefix');
+		if ($cache->clear($prefix)) {
+			if ($prefix) {
+				$output->writeln('<info>Distributed cache matching prefix ' . $prefix . ' cleared</info>');
+			} else {
+				$output->writeln('<info>Distributed cache cleared</info>');
+			}
+			return 0;
+		} else {
+			$output->writeln('<error>Failed to clear cache</error>');
+			return 1;
+		}
+	}
+}

core/register_command.php

@@ -68,7 +68,7 @@
 use OC\Core\Command\Maintenance\RepairShareOwnership;
 use OC\Core\Command\Maintenance\UpdateHtaccess;
 use OC\Core\Command\Maintenance\UpdateTheme;
-use OC\Core\Command\Memcache\RedisCommand;
+use OC\Core\Command\Memcache\DistributedClear;
 use OC\Core\Command\Memcache\DistributedDelete;
 use OC\Core\Command\Memcache\DistributedGet;
 use OC\Core\Command\Memcache\DistributedSet;
@@ -249,6 +249,7 @@
 	$application->add(Server::get(Statistics::class));
 
 	$application->add(Server::get(RedisCommand::class));
+	$application->add(Server::get(DistributedClear::class));
 	$application->add(Server::get(DistributedDelete::class));
 	$application->add(Server::get(DistributedGet::class));
 	$application->add(Server::get(DistributedSet::class));

lib/composer/composer/autoload_classmap.php

@@ -1293,6 +1293,7 @@
     'OC\\Core\\Command\\Maintenance\\RepairShareOwnership' => $baseDir . '/core/Command/Maintenance/RepairShareOwnership.php',
     'OC\\Core\\Command\\Maintenance\\UpdateHtaccess' => $baseDir . '/core/Command/Maintenance/UpdateHtaccess.php',
     'OC\\Core\\Command\\Maintenance\\UpdateTheme' => $baseDir . '/core/Command/Maintenance/UpdateTheme.php',
+    'OC\\Core\\Command\\Memcache\\DistributedClear' => $baseDir . '/core/Command/Memcache/DistributedClear.php',
     'OC\\Core\\Command\\Memcache\\DistributedDelete' => $baseDir . '/core/Command/Memcache/DistributedDelete.php',
     'OC\\Core\\Command\\Memcache\\DistributedGet' => $baseDir . '/core/Command/Memcache/DistributedGet.php',
     'OC\\Core\\Command\\Memcache\\DistributedSet' => $baseDir . '/core/Command/Memcache/DistributedSet.php',

lib/composer/composer/autoload_static.php

@@ -1334,6 +1334,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Core\\Command\\Maintenance\\RepairShareOwnership' => __DIR__ . '/../../..' . '/core/Command/Maintenance/RepairShareOwnership.php',
         'OC\\Core\\Command\\Maintenance\\UpdateHtaccess' => __DIR__ . '/../../..' . '/core/Command/Maintenance/UpdateHtaccess.php',
         'OC\\Core\\Command\\Maintenance\\UpdateTheme' => __DIR__ . '/../../..' . '/core/Command/Maintenance/UpdateTheme.php',
+        'OC\\Core\\Command\\Memcache\\DistributedClear' => __DIR__ . '/../../..' . '/core/Command/Memcache/DistributedClear.php',
         'OC\\Core\\Command\\Memcache\\DistributedDelete' => __DIR__ . '/../../..' . '/core/Command/Memcache/DistributedDelete.php',
         'OC\\Core\\Command\\Memcache\\DistributedGet' => __DIR__ . '/../../..' . '/core/Command/Memcache/DistributedGet.php',
         'OC\\Core\\Command\\Memcache\\DistributedSet' => __DIR__ . '/../../..' . '/core/Command/Memcache/DistributedSet.php',