diff options
Diffstat (limited to 'system/libraries/Cache/drivers/Cache_memcached.php')
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_memcached.php | 180 |
1 files changed, 112 insertions, 68 deletions
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php index fc586e025..1df149c2d 100644 --- a/system/libraries/Cache/drivers/Cache_memcached.php +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -2,54 +2,71 @@ /** * CodeIgniter * - * An open source application development framework for PHP 4.3.2 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @author EllisLab Dev Team + * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 - * @filesource + * @filesource */ -// ------------------------------------------------------------------------ - /** - * CodeIgniter Memcached Caching Class + * CodeIgniter Memcached Caching Class * * @package CodeIgniter * @subpackage Libraries * @category Core - * @author ExpressionEngine Dev Team - * @link + * @author EllisLab Dev Team + * @link */ - class CI_Cache_memcached extends CI_Driver { - private $_memcached; // Holds the memcached object - - protected $_memcache_conf = array( - 'default' => array( - 'default_host' => '127.0.0.1', - 'default_port' => 11211, - 'default_weight' => 1 - ) - ); + /** + * Holds the memcached object + * + * @var object + */ + protected $_memcached; - // ------------------------------------------------------------------------ + /** + * Memcached configuration + * + * @var array + */ + protected $_memcache_conf = array( + 'default' => array( + 'default_host' => '127.0.0.1', + 'default_port' => 11211, + 'default_weight' => 1 + ) + ); /** * Fetch from cache * - * @param mixed unique key id - * @return mixed data on success/false on failure - */ + * @param mixed unique key id + * @return mixed data on success/false on failure + */ public function get($id) - { + { $data = $this->_memcached->get($id); - - return (is_array($data)) ? $data[0] : FALSE; + + return is_array($data) ? $data[0] : FALSE; } // ------------------------------------------------------------------------ @@ -57,32 +74,32 @@ class CI_Cache_memcached extends CI_Driver { /** * Save * - * @param string unique identifier - * @param mixed data being cached - * @param int time to live - * @return boolean true on success, false on failure + * @param string unique identifier + * @param mixed data being cached + * @param int time to live + * @return bool true on success, false on failure */ public function save($id, $data, $ttl = 60) { - if (get_class($this->_memcached) == 'Memcached') + if (get_class($this->_memcached) === 'Memcached') { return $this->_memcached->set($id, array($data, time(), $ttl), $ttl); } - else if (get_class($this->_memcached) == 'Memcache') + elseif (get_class($this->_memcached) === 'Memcache') { return $this->_memcached->set($id, array($data, time(), $ttl), 0, $ttl); } - + return FALSE; } // ------------------------------------------------------------------------ - + /** * Delete from Cache * - * @param mixed key to be deleted. - * @return boolean true on success, false on failure + * @param mixed key to be deleted. + * @return bool true on success, false on failure */ public function delete($id) { @@ -90,11 +107,11 @@ class CI_Cache_memcached extends CI_Driver { } // ------------------------------------------------------------------------ - + /** * Clean the Cache * - * @return boolean false on failure/true on success + * @return bool false on failure/true on success */ public function clean() { @@ -106,21 +123,20 @@ class CI_Cache_memcached extends CI_Driver { /** * Cache Info * - * @param null type not supported in memcached - * @return mixed array on success, false on failure + * @return mixed array on success, false on failure */ - public function cache_info($type = NULL) + public function cache_info() { return $this->_memcached->getStats(); } // ------------------------------------------------------------------------ - + /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed FALSE on failure, array on success. + * @param mixed key to get cache metadata on + * @return mixed FALSE on failure, array on success. */ public function get_metadata($id) { @@ -144,11 +160,14 @@ class CI_Cache_memcached extends CI_Driver { /** * Setup memcached. + * + * @return bool */ - private function _setup_memcached() + protected function _setup_memcached() { // Try to load memcached server info from the config file. $CI =& get_instance(); + if ($CI->config->load('memcached', TRUE, TRUE)) { if (is_array($CI->config->config['memcached'])) @@ -158,61 +177,86 @@ class CI_Cache_memcached extends CI_Driver { foreach ($CI->config->config['memcached'] as $name => $conf) { $this->_memcache_conf[$name] = $conf; - } - } + } + } + } + + if (class_exists('Memcached')) + { + $this->_memcached = new Memcached(); + } + elseif (class_exists('Memcache')) + { + $this->_memcached = new Memcache(); + } + else + { + log_message('error', 'Failed to create object for Memcached Cache; extension not loaded?'); + return FALSE; } - - $this->_memcached = new Memcached(); foreach ($this->_memcache_conf as $name => $cache_server) { if ( ! array_key_exists('hostname', $cache_server)) { - $cache_server['hostname'] = $this->_default_options['default_host']; + $cache_server['hostname'] = $this->_memcache_conf['default']['default_host']; } - + if ( ! array_key_exists('port', $cache_server)) { - $cache_server['port'] = $this->_default_options['default_port']; + $cache_server['port'] = $this->_memcache_conf['default']['default_port']; } - + if ( ! array_key_exists('weight', $cache_server)) { - $cache_server['weight'] = $this->_default_options['default_weight']; + $cache_server['weight'] = $this->_memcache_conf['default']['default_weight']; + } + + if (get_class($this->_memcached) == 'Memcache') + { + // Third parameter is persistance and defaults to TRUE. + $this->_memcached->addServer( + $cache_server['hostname'], + $cache_server['port'], + TRUE, + $cache_server['weight'] + ); + } + else + { + $this->_memcached->addServer( + $cache_server['hostname'], + $cache_server['port'], + $cache_server['weight'] + ); } - - $this->_memcached->addServer( - $cache_server['hostname'], $cache_server['port'], $cache_server['weight'] - ); } + + return TRUE; } // ------------------------------------------------------------------------ - /** * Is supported * * Returns FALSE if memcached is not supported on the system. * If it is, we setup the memcached object & return TRUE + * + * @return bool */ public function is_supported() { - if ( ! extension_loaded('memcached')) + if ( ! extension_loaded('memcached') && ! extension_loaded('memcache')) { log_message('error', 'The Memcached Extension must be loaded to use Memcached Cache.'); - return FALSE; } - - $this->_setup_memcached(); - return TRUE; - } - // ------------------------------------------------------------------------ + return $this->_setup_memcached(); + } } -// End Class /* End of file Cache_memcached.php */ /* Location: ./system/libraries/Cache/drivers/Cache_memcached.php */
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