paulgoughbooks_old
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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014-2019 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author CodeIgniter Dev Team * @copyright 2019-2020 CodeIgniter Foundation * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ namespace CodeIgniter\Cache; use CodeIgniter\Cache\Exceptions\CacheException; use CodeIgniter\Exceptions\CriticalError; /** * Class Cache * * A factory for loading the desired * * @package CodeIgniter\Cache */ class CacheFactory { /** * Attempts to create the desired cache handler, based upon the * * @param \Config\Cache $config * @param string|null $handler * @param string|null $backup * * @return \CodeIgniter\Cache\CacheInterface */ public static function getHandler($config, string $handler = null, string $backup = null) { if (! isset($config->validHandlers) || ! is_array($config->validHandlers)) { throw CacheException::forInvalidHandlers(); } if (! isset($config->handler) || ! isset($config->backupHandler)) { throw CacheException::forNoBackup(); } $handler = ! empty($handler) ? $handler : $config->handler; $backup = ! empty($backup) ? $backup : $config->backupHandler; if (! array_key_exists($handler, $config->validHandlers) || ! array_key_exists($backup, $config->validHandlers)) { throw CacheException::forHandlerNotFound(); } // Get an instance of our handler. $adapter = new $config->validHandlers[$handler]($config); if (! $adapter->isSupported()) { $adapter = new $config->validHandlers[$backup]($config); if (! $adapter->isSupported()) { // Log stuff here, don't throw exception. No need to raise a fuss. // Fall back to the dummy adapter. $adapter = new $config->validHandlers['dummy'](); } } // If $adapter->initialization throws a CriticalError exception, we will attempt to // use the $backup handler, if that also fails, we resort to the dummy handler. try { $adapter->initialize(); } catch (CriticalError $e) { // log the fact that an exception occurred as well what handler we are resorting to log_message('critical', $e->getMessage() . ' Resorting to using ' . $backup . ' handler.'); // get the next best cache handler (or dummy if the $backup also fails) $adapter = self::getHandler($config, $backup, 'dummy'); } return $adapter; } //-------------------------------------------------------------------- } |
Commits for paulgoughbooks_old/trunk/system/Cache/CacheFactory.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Tue 03 Nov, 2020 08:50:21 +0000 | Migration of Paul Goughs Books site to Codeignitor 4 |