TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:31 +02:00
commit 3e43c11539
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+<?php
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Install\Service;
+
+use TYPO3\CMS\Core\Cache\CacheManager;
+use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
+use TYPO3\CMS\Core\DependencyInjection\Cache\ContainerBackend;
+
+/**
+ * Basic service to clear caches within the install tool.
+ * @internal This is NOT an API class, it is for internal use in the install tool only.
+ */
+readonly class ClearCacheService
+{
+    public function __construct(
+        private LateBootService $lateBootService,
+        private FrontendInterface $dependencyInjectionCache
+    ) {}
+
+    /**
+     * This clear cache implementation follows a pretty brutal approach.
+     * Goal is to reliably get rid of cache entries, even if some broken
+     * extension is loaded that would kill the backend 'clear cache' action.
+     *
+     * Therefore, this method "knows" implementation details of the cache
+     * framework and uses them to clear all file based cache (typo3temp/Cache)
+     * and database caches (tables prefixed with cf_) manually.
+     *
+     * After that ext_localconf of extensions are loaded, those
+     * may register additional caches in the caching framework with different
+     * backend, and will then clear them with the usual flush() method.
+     */
+    public function clearAll(): void
+    {
+        // Flush all caches defined in TYPO3_CONF_VARS, but not the ones defined by extensions in ext_localconf.php
+        $baseCaches = $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations'] ?? [];
+
+        // Remove DI container cache (will be renewed in next step)
+        if ($this->dependencyInjectionCache->getBackend() instanceof ContainerBackend) {
+            /** @var ContainerBackend $diCacheBackend */
+            $diCacheBackend = $this->dependencyInjectionCache->getBackend();
+            // We need to remove using the forceFlush method because the DI cache backend disables the flush method
+            $diCacheBackend->forceFlush();
+        }
+
+        // The cache manager is already instantiated in the install tool
+        // * (both in the failsafe and the late boot container), but
+        // * with settings to disable caching (all caches using NullBackend).
+        // Obtain a real instance
+        $this->lateBootService->unsetInternalContainerInstance();
+        $container = $this->lateBootService->getContainer(true);
+        $this->lateBootService->makeCurrent($container);
+        $cacheManager = $container->get(CacheManager::class);
+
+        $cacheManager->flushCaches();
+
+        // From this point on, the code may fatal, if some broken extension is loaded.
+        $this->lateBootService->loadExtLocalconfDatabase();
+
+        $extensionCaches = $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations'] ?? [];
+        // Loose comparison on purpose to allow changed ordering of the array
+        if ($baseCaches != $extensionCaches) {
+            // When configuration has changed during loading of extensions (due to ext_localconf.php), flush all caches again
+            $cacheManager->setCacheConfigurations($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']);
+            $cacheManager->flushCaches();
+        }
+    }
+}