CacheService.php

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<?php
 
declare(strict_types=1);
 
/*
 * 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\Extbase\Service;
 
use ‪TYPO3\CMS\Core\Cache\CacheManager;
use ‪TYPO3\CMS\Core\SingletonInterface;
 
class ‪CacheService implements ‪SingletonInterface
{
    protected ‪$pageIdStack;
 
    protected ‪$cacheManager;
 
    public function ‪injectCacheManager(‪CacheManager ‪$cacheManager): void
    {
        $this->cacheManager = ‪$cacheManager;
    }
 
    public function ‪__construct()
    {
        $this->pageIdStack = new \SplStack();
    }
 
    public function ‪getPageIdStack(): \SplStack
    {
        return ‪$this->pageIdStack;
    }
 
    public function ‪clearPageCache($pageIdsToClear = null): void
    {
        if ($pageIdsToClear === null) {
            $this->cacheManager->flushCachesInGroup('pages');
        } else {
            if (!is_array($pageIdsToClear)) {
                $pageIdsToClear = [(int)$pageIdsToClear];
            }
            $tags = array_map(function ($item) {
                return 'pageId_' . $item;
            }, $pageIdsToClear);
            $this->cacheManager->flushCachesInGroupByTags('pages', $tags);
        }
    }
 
    public function ‪clearCachesOfRegisteredPageIds(): void
    {
        if (!$this->pageIdStack->isEmpty()) {
            $pageIds = [];
            while (!$this->pageIdStack->isEmpty()) {
                $pageIds[] = (int)$this->pageIdStack->pop();
            }
            $pageIds = array_values(array_unique($pageIds));
            $this->‪clearPageCache($pageIds);
        }
    }
}