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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\Component\Cache\Administrator\Model; \defined('_JEXEC') or die; use Joomla\CMS\Cache\Cache; use Joomla\CMS\Cache\CacheController; use Joomla\CMS\Cache\Exception\CacheConnectingException; use Joomla\CMS\Cache\Exception\UnsupportedCacheException; use Joomla\CMS\Factory; use Joomla\CMS\Language\Text; use Joomla\CMS\MVC\Model\ListModel; use Joomla\CMS\Pagination\Pagination; use Joomla\Utilities\ArrayHelper; /** * Cache Model * * @since 1.6 */ class CacheModel extends ListModel { /** * An Array of CacheItems indexed by cache group ID * * @var array */ protected $_data = array(); /** * Group total * * @var integer */ protected $_total = null; /** * Pagination object * * @var object */ protected $_pagination = null; /** * Constructor. * * @param array $config An optional associative array of configuration settings. * * @since 3.5 */ public function __construct($config = array()) { if (empty($config['filter_fields'])) { $config['filter_fields'] = array( 'group', 'count', 'size', 'client_id', ); } parent::__construct($config); } /** * Method to auto-populate the model state. * * Note. Calling getState in this method will result in recursion. * * @param string $ordering Field for ordering. * @param string $direction Direction of ordering. * * @return void * * @since 1.6 */ protected function populateState($ordering = 'group', $direction = 'asc') { // Load the filter state. $this->setState('filter.search', $this->getUserStateFromRequest($this->context . '.filter.search', 'filter_search', '', 'string')); parent::populateState($ordering, $direction); } /** * Method to get a store id based on model configuration state. * * This is necessary because the model is used by the component and * different modules that might need different sets of data or different * ordering requirements. * * @param string $id A prefix for the store id. * * @return string A store id. * * @since 3.5 */ protected function getStoreId($id = '') { // Compile the store id. $id .= ':' . $this->getState('filter.search'); return parent::getStoreId($id); } /** * Method to get cache data * * @return array */ public function getData() { if (empty($this->_data)) { try { $cache = $this->getCache(); $data = $cache->getAll(); if ($data && count($data) > 0) { // Process filter by search term. if ($search = $this->getState('filter.search')) { foreach ($data as $key => $cacheItem) { if (stripos($cacheItem->group, $search) === false) { unset($data[$key]); } } } // Process ordering. $listOrder = $this->getState('list.ordering', 'group'); $listDirn = $this->getState('list.direction', 'ASC'); $this->_data = ArrayHelper::sortObjects($data, $listOrder, strtolower($listDirn) === 'desc' ? -1 : 1, true, true); // Process pagination. $limit = (int) $this->getState('list.limit', 25); if ($limit !== 0) { $start = (int) $this->getState('list.start', 0); return array_slice($this->_data, $start, $limit); } } else { $this->_data = array(); } } catch (CacheConnectingException $exception) { $this->setError(Text::_('COM_CACHE_ERROR_CACHE_CONNECTION_FAILED')); $this->_data = array(); } catch (UnsupportedCacheException $exception) { $this->setError(Text::_('COM_CACHE_ERROR_CACHE_DRIVER_UNSUPPORTED')); $this->_data = array(); } } return $this->_data; } /** * Method to get cache instance. * * @return CacheController */ public function getCache() { $app = Factory::getApplication(); $options = array( 'defaultgroup' => '', 'storage' => $app->get('cache_handler', ''), 'caching' => true, 'cachebase' => $app->get('cache_path', JPATH_CACHE) ); return Cache::getInstance('', $options); } /** * Get the number of current Cache Groups. * * @return integer */ public function getTotal() { if (empty($this->_total)) { $this->_total = count($this->getData()); } return $this->_total; } /** * Method to get a pagination object for the cache. * * @return Pagination */ public function getPagination() { if (empty($this->_pagination)) { $this->_pagination = new Pagination($this->getTotal(), $this->getState('list.start'), $this->getState('list.limit')); } return $this->_pagination; } /** * Clean out a cache group as named by param. * If no param is passed clean all cache groups. * * @param string $group Cache group name. * * @return boolean True on success, false otherwise */ public function clean($group = '') { try { $this->getCache()->clean($group); } catch (CacheConnectingException $exception) { return false; } catch (UnsupportedCacheException $exception) { return false; } Factory::getApplication()->triggerEvent('onAfterPurge', array($group)); return true; } /** * Purge an array of cache groups. * * @param array $array Array of cache group names. * * @return array Array with errors, if they exist. */ public function cleanlist($array) { $errors = array(); foreach ($array as $group) { if (!$this->clean($group)) { $errors[] = $group; } } return $errors; } /** * Purge all cache items. * * @return boolean True if successful; false otherwise. */ public function purge() { try { Factory::getCache('')->gc(); } catch (CacheConnectingException $exception) { return false; } catch (UnsupportedCacheException $exception) { return false; } Factory::getApplication()->triggerEvent('onAfterPurge', array()); return true; } }