85 lines
3.6 KiB
PHP
85 lines
3.6 KiB
PHP
<?php
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namespace TYPO3\CMS\Install\Service;
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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use TYPO3\CMS\Core\Core\Bootstrap;
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use TYPO3\CMS\Core\Core\Environment;
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use TYPO3\CMS\Core\Database\ConnectionPool;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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* Basic service to clear caches within the install tool.
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* @internal This is NOT an API class, it is for internal use in the install tool only.
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*/
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class ClearCacheService
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{
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/**
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* This clear cache implementation follows a pretty brutal approach.
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* Goal is to reliably get rid of cache entries, even if some broken
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* extension is loaded that would kill the backend 'clear cache' action.
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*
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* Therefor this method "knows" implementation details of the cache
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* framework and uses them to clear all file based cache (typo3temp/Cache)
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* and database caches (tables prefixed with cf_) manually.
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*
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* After that ext_tables and ext_localconf of extensions are loaded, those
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* may register additional caches in the caching framework with different
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* backend, and will then clear them with the usual flush() method.
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*/
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public function clearAll()
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{
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// Delete typo3temp/Cache
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GeneralUtility::flushDirectory(Environment::getVarPath() . '/cache', true, true);
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// Get all table names from Default connection starting with 'cf_' and truncate them
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$connectionPool = GeneralUtility::makeInstance(ConnectionPool::class);
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$connection = $connectionPool->getConnectionByName('Default');
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$tableNames = $connection->getSchemaManager()->listTableNames();
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foreach ($tableNames as $tableName) {
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if (strpos($tableName, 'cf_') === 0 || $tableName === 'cache_treelist') {
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$connection->truncate($tableName);
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}
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}
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// check tables on other connections
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$remappedTables = isset($GLOBALS['TYPO3_CONF_VARS']['DB']['TableMapping'])
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? array_keys((array)$GLOBALS['TYPO3_CONF_VARS']['DB']['TableMapping'])
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: [];
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foreach ($remappedTables as $tableName) {
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if (strpos((string)$tableName, 'cf_') === 0 || $tableName === 'cache_treelist') {
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$connectionPool->getConnectionForTable($tableName)->truncate($tableName);
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}
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}
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// From this point on, the code may fatal, if some broken extension is loaded.
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// Use bootstrap to load all ext_localconf and ext_tables
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Bootstrap::loadTypo3LoadedExtAndExtLocalconf(false);
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Bootstrap::unsetReservedGlobalVariables();
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Bootstrap::loadBaseTca(false);
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Bootstrap::loadExtTables(false);
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// The cache manager is already instantiated in the install tool
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// with some hacked settings to disable caching of extbase and fluid.
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// We want a "fresh" object here to operate on a different cache setup.
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// cacheManager implements SingletonInterface, so the only way to get a "fresh"
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// instance is by circumventing makeInstance and/or the objectManager and
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// using new directly!
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$cacheManager = new \TYPO3\CMS\Core\Cache\CacheManager();
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$cacheManager->setCacheConfigurations($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']);
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$cacheManager->flushCaches();
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}
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}
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