1<?php 2 3/** 4 * webtrees: online genealogy 5 * Copyright (C) 2022 webtrees development team 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 3 of the License, or 9 * (at your option) any later version. 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <https://www.gnu.org/licenses/>. 16 */ 17 18declare(strict_types=1); 19 20namespace Fisharebest\Webtrees; 21 22use Closure; 23use Symfony\Contracts\Cache\CacheInterface; 24use Symfony\Contracts\Cache\ItemInterface; 25 26/** 27 * Wrapper around the symfony PSR6 cache library. 28 * Hash the keys to protect against characters that are not allowed in PSR6. 29 */ 30class Cache 31{ 32 private CacheInterface $cache; 33 34 /** 35 * Cache constructor. 36 * 37 * @param CacheInterface $cache 38 */ 39 public function __construct(CacheInterface $cache) 40 { 41 $this->cache = $cache; 42 } 43 44 /** 45 * Fetch an item from the cache - or create it where it does not exist. 46 * 47 * @template T 48 * 49 * @param string $key 50 * @param Closure(): T $closure 51 * @param int|null $ttl 52 * 53 * @return T 54 */ 55 public function remember(string $key, Closure $closure, int $ttl = null) 56 { 57 return $this->cache->get(md5($key), static function (ItemInterface $item) use ($closure, $ttl) { 58 $item->expiresAfter($ttl); 59 60 return $closure(); 61 }); 62 } 63 64 /** 65 * Remove an item from the cache. 66 * 67 * @param string $key 68 */ 69 public function forget(string $key): void 70 { 71 $this->cache->delete(md5($key)); 72 } 73} 74