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<?php

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/**

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* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)

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* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)

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* Licensed under The MIT License

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* For full copyright and license information, please see the LICENSE.txt

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* Redistributions of files must retain the above copyright notice.

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* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)

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* @link https://cakephp.org CakePHP(tm) Project

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* @since 3.0.0

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* @license https://opensource.org/licenses/mit-license.php MIT License

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namespace Cake\Cache;

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use BadMethodCallException;

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use Cake\Core\App;

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use Cake\Core\ObjectRegistry;

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use RuntimeException;

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/**

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* An object registry for cache engines.

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* Used by Cake\Cache\Cache to load and manage cache engines.

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* @extends \Cake\Core\ObjectRegistry<\Cake\Cache\CacheEngine>

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class CacheRegistry extends ObjectRegistry

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{

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/**

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* Resolve a cache engine classname.

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* Part of the template method for Cake\Core\ObjectRegistry::load()

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* @param string $class Partial classname to resolve.

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* @return string|false Either the correct classname or false.

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protected function _resolveClassName($class)

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{

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if (is_object($class)) {

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return $class;

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}

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return App::className($class, 'Cache/Engine', 'Engine');

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}

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/**

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* Throws an exception when a cache engine is missing.

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* Part of the template method for Cake\Core\ObjectRegistry::load()

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* @param string $class The classname that is missing.

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* @param string|null $plugin The plugin the cache is missing in.

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* @return void

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* @throws \BadMethodCallException

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protected function _throwMissingClassError($class, $plugin)

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{

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throw new BadMethodCallException(sprintf('Cache engine %s is not available.', $class));

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}

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/**

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* Create the cache engine instance.

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* Part of the template method for Cake\Core\ObjectRegistry::load()

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* @param string|\Cake\Cache\CacheEngine $class The classname or object to make.

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* @param string $alias The alias of the object.

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* @param array $config An array of settings to use for the cache engine.

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* @return \Cake\Cache\CacheEngine The constructed CacheEngine class.

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* @throws \RuntimeException when an object doesn't implement the correct interface.

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protected function _create($class, $alias, $config)

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{

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if (is_object($class)) {

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$instance = $class;

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}

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unset($config['className']);

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if (!isset($instance)) {

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$instance = new $class($config);

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}

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if (!($instance instanceof CacheEngine)) {

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throw new RuntimeException(

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'Cache engines must use Cake\Cache\CacheEngine as a base class.'

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);

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}

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if (!$instance->init($config)) {

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throw new RuntimeException(

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sprintf('Cache engine %s is not properly configured.', get_class($instance))

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);

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}

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$config = $instance->getConfig();

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if (!empty($config['probability']) && time() % $config['probability'] === 0) {

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$instance->gc();

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}

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return $instance;

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}

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/**

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* Remove a single adapter from the registry.

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* @param string $name The adapter name.

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* @return $this

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public function unload($name)

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{

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unset($this->_loaded[$name]);

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return $this;

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}

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}

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