1<?php 2 3/** 4 * webtrees: online genealogy 5 * Copyright (C) 2019 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 <http://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 */ 29class Cache 30{ 31 // Default time-to-live for cache items; 100 days. 32 private const DEFAULT_TTL = 8640000; 33 34 /** @var CacheInterface */ 35 private $cache; 36 37 /** 38 * Cache constructor. 39 * 40 * @param CacheInterface $cache 41 */ 42 public function __construct(CacheInterface $cache) 43 { 44 $this->cache = $cache; 45 } 46 47 /** 48 * Fetch an item from the cache - or create it where it does not exist. 49 * 50 * @param string $key 51 * @param Closure $closure 52 * @param int $ttl 53 * 54 * @return mixed 55 */ 56 public function remember(string $key, Closure $closure, int $ttl = self::DEFAULT_TTL) 57 { 58 return $this->cache->get($key, static function (ItemInterface $item) use ($closure, $ttl) { 59 $item->expiresAfter($ttl); 60 61 return $closure(); 62 }); 63 } 64 65 /** 66 * Remove an item from the cache. 67 * 68 * @param string $key 69 */ 70 public function forget(string $key): void 71 { 72 $this->cache->delete($key); 73 } 74} 75