ClearCacheService.php

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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\Database\ConnectionPool;
use ‪TYPO3\CMS\Core\DependencyInjection\Cache\ContainerBackend;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪ClearCacheService
{
    private const ‪legacyDatabaseCacheTables = [
        'cache_treelist',
    ];
 
    public function ‪__construct(
        private readonly ‪LateBootService $lateBootService,
        private readonly ‪FrontendInterface $dependencyInjectionCache
    ) {}
 
    public function ‪clearAll(): void
    {
        // Low level flush of legacy database cache tables
        $connectionPool = GeneralUtility::makeInstance(ConnectionPool::class);
        foreach (self::legacyDatabaseCacheTables as $tableName) {
            $connection = $connectionPool->getConnectionForTable($tableName);
            if ($connection->createSchemaManager()->tablesExist($tableName)) {
                $connection->truncate($tableName);
            }
        }
 
        // 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'] ?? [];
        $this->‪flushCaches($baseCaches);
 
        // Remove DI container cache (this might be removed in preference of functionality to rebuild this cache)
        if ($this->dependencyInjectionCache->getBackend() instanceof ‪ContainerBackend) {
            $diCacheBackend = $this->dependencyInjectionCache->getBackend();
            // We need to remove using the forceFlush method because the DI cache backend disables the flush method
            $diCacheBackend->forceFlush();
        }
 
        // From this point on, the code may fatal, if some broken extension is loaded.
        $this->lateBootService->loadExtLocalconfDatabaseAndExtTables();
 
        $extensionCaches = ‪$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
            $this->‪flushCaches(‪$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']);
        }
    }
 
    private function ‪flushCaches(array $cacheConfiguration): void
    {
        $cacheManager = new ‪CacheManager();
        $cacheManager->setCacheConfigurations($cacheConfiguration);
        $cacheManager->flushCaches();
    }
}