132 lines
4.8 KiB
PHP
132 lines
4.8 KiB
PHP
<?php
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/**
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* 2007-2019 PrestaShop and Contributors
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*
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* NOTICE OF LICENSE
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*
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* This source file is subject to the Open Software License (OSL 3.0)
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* that is bundled with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* https://opensource.org/licenses/OSL-3.0
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@prestashop.com so we can send you a copy immediately.
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*
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* DISCLAIMER
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*
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* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
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* versions in the future. If you wish to customize PrestaShop for your
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* needs please refer to https://www.prestashop.com for more information.
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*
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* @author PrestaShop SA <contact@prestashop.com>
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* @copyright 2007-2019 PrestaShop SA and Contributors
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* @license https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
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* International Registered Trademark & Property of PrestaShop SA
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*/
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class Smarty_CacheResource_Mysql extends Smarty_CacheResource_Custom
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{
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/**
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* fetch cached content and its modification time from data source.
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*
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* @param string $id unique cache content identifier
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* @param string $name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param string $content cached content
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* @param int $mtime cache modification timestamp (epoch)
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*/
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protected function fetch($id, $name, $cache_id, $compile_id, &$content, &$mtime)
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{
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$row = Db::getInstance()->getRow('SELECT modified, content FROM ' . _DB_PREFIX_ . 'smarty_cache WHERE id_smarty_cache = "' . pSQL($id, true) . '"');
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if ($row) {
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$content = $row['content'];
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$mtime = strtotime($row['modified']);
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} else {
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$content = null;
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$mtime = null;
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}
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}
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/**
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* Fetch cached content's modification timestamp from data source.
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*
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* @note implementing this method is optional. Only implement it if modification times can be accessed faster than loading the complete cached content.
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*
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* @param string $id unique cache content identifier
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* @param string $name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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*
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* @return int|bool timestamp (epoch) the template was modified, or false if not found
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*/
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protected function fetchTimestamp($id, $name, $cache_id, $compile_id)
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{
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$value = Db::getInstance()->getValue('SELECT modified FROM ' . _DB_PREFIX_ . 'smarty_cache WHERE id_smarty_cache = "' . pSQL($id, true) . '"');
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$mtime = strtotime($value);
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return $mtime;
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}
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/**
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* Save content to cache.
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*
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* @param string $id unique cache content identifier
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* @param string $name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param int|null $exp_time seconds till expiration time in seconds or null
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* @param string $content content to cache
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*
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* @return bool success
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*/
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protected function save($id, $name, $cache_id, $compile_id, $exp_time, $content)
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{
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Db::getInstance()->execute('
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REPLACE INTO ' . _DB_PREFIX_ . 'smarty_cache (id_smarty_cache, name, cache_id, content)
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VALUES (
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"' . pSQL($id, true) . '",
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"' . pSQL(sha1($name)) . '",
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"' . pSQL($cache_id, true) . '",
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"' . pSQL($content, true) . '"
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)');
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return (bool) Db::getInstance()->Affected_Rows();
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}
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/**
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* Delete content from cache.
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*
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* @param string $name template name
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* @param string $cache_id cache id
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* @param string $compile_id compile id
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* @param int|null $exp_time seconds till expiration or null
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*
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* @return int number of deleted caches
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*/
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protected function delete($name, $cache_id, $compile_id, $exp_time)
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{
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// delete the whole cache
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if ($name === null && $cache_id === null && $compile_id === null && $exp_time === null) {
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// returning the number of deleted caches would require a second query to count them
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Db::getInstance()->execute('TRUNCATE TABLE ' . _DB_PREFIX_ . 'smarty_cache');
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return -1;
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}
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$where = array();
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if ($name !== null) {
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$where[] = 'name = "' . pSQL(sha1($name)) . '"';
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}
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if ($exp_time !== null) {
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$where[] = 'modified < DATE_SUB(NOW(), INTERVAL ' . (int) $exp_time . ' SECOND)';
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}
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if ($cache_id !== null) {
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$where[] = '(cache_id = "' . pSQL($cache_id, true) . '" OR cache_id LIKE "' . pSQL($cache_id . '|%', true) . '")';
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}
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Db::getInstance()->execute('DELETE FROM ' . _DB_PREFIX_ . 'smarty_cache WHERE ' . implode(' AND ', $where));
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return Db::getInstance()->Affected_Rows();
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}
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}
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