diff options
Diffstat (limited to 'system/libraries/Cache')
| -rw-r--r-- | system/libraries/Cache/Cache.php | 140 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_apc.php | 22 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_dummy.php | 7 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_file.php | 37 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_memcached.php | 35 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_redis.php | 237 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/Cache_wincache.php | 17 | ||||
| -rw-r--r-- | system/libraries/Cache/drivers/index.html | 10 | ||||
| -rw-r--r-- | system/libraries/Cache/index.html | 10 |
9 files changed, 413 insertions, 102 deletions
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php index f98241617..48bd9581a 100644 --- a/system/libraries/Cache/Cache.php +++ b/system/libraries/Cache/Cache.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -18,12 +18,13 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Caching Class @@ -36,32 +37,62 @@ */ class CI_Cache extends CI_Driver_Library { - protected $valid_drivers = array( - 'cache_apc', - 'cache_file', - 'cache_memcached', - 'cache_dummy', - 'cache_wincache' - ); + /** + * Valid cache drivers + * + * @var array + */ + protected $valid_drivers = array( + 'apc', + 'dummy', + 'file', + 'memcached', + 'redis', + 'wincache' + ); + + /** + * Path of cache files (if file-based cache) + * + * @var string + */ + protected $_cache_path = NULL; + + /** + * Reference to the driver + * + * @var mixed + */ + protected $_adapter = 'dummy'; - protected $_cache_path = NULL; // Path of cache files (if file-based cache) - protected $_adapter = 'dummy'; - protected $_backup_driver; + /** + * Fallback driver + * + * @var string + */ + protected $_backup_driver = 'dummy'; + + /** + * Cache key prefix + * + * @var string + */ + public $key_prefix = ''; /** * Constructor * * Initialize class properties based on the configuration array. * - * @param array + * @param array $config = array() * @return void */ public function __construct($config = array()) { $default_config = array( - 'adapter', - 'memcached' - ); + 'adapter', + 'memcached' + ); foreach ($default_config as $key) { @@ -73,11 +104,26 @@ class CI_Cache extends CI_Driver_Library { } } - if (isset($config['backup'])) + isset($config['key_prefix']) && $this->key_prefix = $config['key_prefix']; + + if (isset($config['backup']) && in_array('cache_'.$config['backup'], $this->valid_drivers)) { - if (in_array('cache_'.$config['backup'], $this->valid_drivers)) + $this->_backup_driver = $config['backup']; + } + + // If the specified adapter isn't available, check the backup. + if ( ! $this->is_supported($this->_adapter)) + { + if ( ! $this->is_supported($this->_backup_driver)) { - $this->_backup_driver = $config['backup']; + // Backup isn't supported either. Default to 'Dummy' driver. + log_message('error', 'Cache adapter "'.$this->_adapter.'" and backup "'.$this->_backup_driver.'" are both unavailable. Cache is now using "Dummy" adapter.'); + $this->_adapter = 'dummy'; + } + else + { + // Backup is supported. Set it to primary. + $this->_adapter = $this->_backup_driver; } } } @@ -90,12 +136,12 @@ class CI_Cache extends CI_Driver_Library { * Look for a value in the cache. If it exists, return the data * if not, return FALSE * - * @param string - * @return mixed value that is stored/FALSE on failure + * @param string $id + * @return mixed value matching $id or FALSE on failure */ public function get($id) { - return $this->{$this->_adapter}->get($id); + return $this->{$this->_adapter}->get($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -103,14 +149,14 @@ class CI_Cache extends CI_Driver_Library { /** * Cache Save * - * @param string Unique Key - * @param mixed Data to store - * @param int Length of time (in seconds) to cache the data - * @return bool true on success/false on failure + * @param string $id Cache ID + * @param mixed $data Data to store + * @param int $ttl = 60 Cache TTL (in seconds) + * @return bool TRUE on success, FALSE on failure */ public function save($id, $data, $ttl = 60) { - return $this->{$this->_adapter}->save($id, $data, $ttl); + return $this->{$this->_adapter}->save($this->key_prefix.$id, $data, $ttl); } // ------------------------------------------------------------------------ @@ -118,12 +164,12 @@ class CI_Cache extends CI_Driver_Library { /** * Delete from Cache * - * @param mixed unique identifier of the item in the cache - * @return bool true on success/false on failure + * @param string $id Cache ID + * @return bool TRUE on success, FALSE on failure */ public function delete($id) { - return $this->{$this->_adapter}->delete($id); + return $this->{$this->_adapter}->delete($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -131,7 +177,7 @@ class CI_Cache extends CI_Driver_Library { /** * Clean the cache * - * @return bool false on failure/true on success + * @return bool TRUE on success, FALSE on failure */ public function clean() { @@ -143,8 +189,8 @@ class CI_Cache extends CI_Driver_Library { /** * Cache Info * - * @param string user/filehits - * @return mixed array on success, false on failure + * @param string $type = 'user' user/filehits + * @return mixed array containing cache info on success OR FALSE on failure */ public function cache_info($type = 'user') { @@ -156,12 +202,12 @@ class CI_Cache extends CI_Driver_Library { /** * Get Cache Metadata * - * @param mixed key to get cache metadata on - * @return mixed return value from child method + * @param string $id key to get cache metadata on + * @return mixed cache item metadata */ public function get_metadata($id) { - return $this->{$this->_adapter}->get_metadata($id); + return $this->{$this->_adapter}->get_metadata($this->key_prefix.$id); } // ------------------------------------------------------------------------ @@ -169,7 +215,7 @@ class CI_Cache extends CI_Driver_Library { /** * Is the requested driver supported in this environment? * - * @param string The driver to test. + * @param string $driver The driver to test * @return array */ public function is_supported($driver) @@ -184,26 +230,6 @@ class CI_Cache extends CI_Driver_Library { return $support[$driver]; } - // ------------------------------------------------------------------------ - - /** - * __get() - * - * @param child - * @return object - */ - public function __get($child) - { - $obj = parent::__get($child); - - if ( ! $this->is_supported($child)) - { - $this->_adapter = $this->_backup_driver; - } - - return $obj; - } - } /* End of file Cache.php */ diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php index 59ab67533..a9ad6ed19 100644 --- a/system/libraries/Cache/drivers/Cache_apc.php +++ b/system/libraries/Cache/drivers/Cache_apc.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -18,12 +18,13 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter APC Caching Class @@ -47,9 +48,11 @@ class CI_Cache_apc extends CI_Driver { */ public function get($id) { - $data = apc_fetch($id); + $success = FALSE; + $data = apc_fetch($id, $success); - return is_array($data) ? $data[0] : FALSE; + return ($success === TRUE && is_array($data)) + ? unserialize($data[0]) : FALSE; } // ------------------------------------------------------------------------ @@ -66,7 +69,7 @@ class CI_Cache_apc extends CI_Driver { public function save($id, $data, $ttl = 60) { $ttl = (int) $ttl; - return apc_store($id, array($data, time(), $ttl), $ttl); + return apc_store($id, array(serialize($data), time(), $ttl), $ttl); } // ------------------------------------------------------------------------ @@ -75,7 +78,7 @@ class CI_Cache_apc extends CI_Driver { * Delete from Cache * * @param mixed unique identifier of the item in the cache - * @param bool true on success/false on failure + * @return bool true on success/false on failure */ public function delete($id) { @@ -117,9 +120,10 @@ class CI_Cache_apc extends CI_Driver { */ public function get_metadata($id) { - $stored = apc_fetch($id); + $success = FALSE; + $stored = apc_fetch($id, $success); - if (count($stored) !== 3) + if ($success === FALSE OR count($stored) !== 3) { return FALSE; } @@ -129,7 +133,7 @@ class CI_Cache_apc extends CI_Driver { return array( 'expire' => $time + $ttl, 'mtime' => $time, - 'data' => $data + 'data' => unserialize($data) ); } diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php index e8b791c5b..a3bdc3c80 100644 --- a/system/libraries/Cache/drivers/Cache_dummy.php +++ b/system/libraries/Cache/drivers/Cache_dummy.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -18,12 +18,13 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Dummy Caching Class @@ -70,7 +71,7 @@ class CI_Cache_dummy extends CI_Driver { * Delete from Cache * * @param mixed unique identifier of the item in the cache - * @param bool TRUE, simulating success + * @return bool TRUE, simulating success */ public function delete($id) { diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php index dd27aa90e..9fd053362 100644 --- a/system/libraries/Cache/drivers/Cache_file.php +++ b/system/libraries/Cache/drivers/Cache_file.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -18,15 +18,16 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** - * CodeIgniter Memcached Caching Class + * CodeIgniter File Caching Class * * @package CodeIgniter * @subpackage Libraries @@ -36,14 +37,24 @@ */ class CI_Cache_file extends CI_Driver { + /** + * Directory in which to save cache files + * + * @var string + */ protected $_cache_path; + /** + * Initialize file-based cache + * + * @return void + */ public function __construct() { $CI =& get_instance(); $CI->load->helper('file'); $path = $CI->config->item('cache_path'); - $this->_cache_path = ($path == '') ? APPPATH.'cache/' : $path; + $this->_cache_path = ($path === '') ? APPPATH.'cache/' : $path; } // ------------------------------------------------------------------------ @@ -61,9 +72,9 @@ class CI_Cache_file extends CI_Driver { return FALSE; } - $data = unserialize(read_file($this->_cache_path.$id)); + $data = unserialize(file_get_contents($this->_cache_path.$id)); - if (time() > $data['time'] + $data['ttl']) + if ($data['ttl'] > 0 && time() > $data['time'] + $data['ttl']) { unlink($this->_cache_path.$id); return FALSE; @@ -86,10 +97,10 @@ class CI_Cache_file extends CI_Driver { public function save($id, $data, $ttl = 60) { $contents = array( - 'time' => time(), - 'ttl' => $ttl, - 'data' => $data - ); + 'time' => time(), + 'ttl' => $ttl, + 'data' => $data + ); if (write_file($this->_cache_path.$id, serialize($contents))) { @@ -155,19 +166,19 @@ class CI_Cache_file extends CI_Driver { return FALSE; } - $data = unserialize(read_file($this->_cache_path.$id)); + $data = unserialize(file_get_contents($this->_cache_path.$id)); if (is_array($data)) { $mtime = filemtime($this->_cache_path.$id); - if ( ! isset($data['data']['ttl'])) + if ( ! isset($data['ttl'])) { return FALSE; } return array( - 'expire' => $mtime + $data['data']['ttl'], + 'expire' => $mtime + $data['ttl'], 'mtime' => $mtime ); } diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php index 4cd5f3d6f..fae002347 100644 --- a/system/libraries/Cache/drivers/Cache_memcached.php +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -18,12 +18,13 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Memcached Caching Class @@ -36,15 +37,25 @@ */ class CI_Cache_memcached extends CI_Driver { - protected $_memcached; // Holds the memcached object + /** + * Holds the memcached object + * + * @var object + */ + protected $_memcached; + /** + * Memcached configuration + * + * @var array + */ protected $_memcache_conf = array( - 'default' => array( - 'default_host' => '127.0.0.1', - 'default_port' => 11211, - 'default_weight' => 1 - ) - ); + 'default' => array( + 'default_host' => '127.0.0.1', + 'default_port' => 11211, + 'default_weight' => 1 + ) + ); /** * Fetch from cache @@ -67,7 +78,7 @@ class CI_Cache_memcached extends CI_Driver { * @param string unique identifier * @param mixed data being cached * @param int time to live - * @return bool true on success, false on failure + * @return bool true on success, false on failure */ public function save($id, $data, $ttl = 60) { @@ -89,7 +100,7 @@ class CI_Cache_memcached extends CI_Driver { * Delete from Cache * * @param mixed key to be deleted. - * @return bool true on success, false on failure + * @return bool true on success, false on failure */ public function delete($id) { @@ -202,7 +213,7 @@ class CI_Cache_memcached extends CI_Driver { $cache_server['weight'] = $this->_memcache_conf['default']['default_weight']; } - if (get_class($this->_memcached) == 'Memcache') + if (get_class($this->_memcached) === 'Memcache') { // Third parameter is persistance and defaults to TRUE. $this->_memcached->addServer( diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php new file mode 100644 index 000000000..60033344b --- /dev/null +++ b/system/libraries/Cache/drivers/Cache_redis.php @@ -0,0 +1,237 @@ +<?php +/** + * CodeIgniter + * + * 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 EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) + * @link http://codeigniter.com + * @since Version 3.0 + * @filesource + */ +defined('BASEPATH') OR exit('No direct script access allowed'); + +/** + * CodeIgniter Redis Caching Class + * + * @package CodeIgniter + * @subpackage Libraries + * @category Core + * @author Anton Lindqvist <anton@qvister.se> + * @link + */ +class CI_Cache_redis extends CI_Driver +{ + /** + * Default config + * + * @static + * @var array + */ + protected static $_default_config = array( + 'host' => '127.0.0.1', + 'password' => NULL, + 'port' => 6379, + 'timeout' => 0 + ); + + /** + * Redis connection + * + * @var Redis + */ + protected $_redis; + + // ------------------------------------------------------------------------ + + /** + * Get cache + * + * @param string Cache key identifier + * @return mixed + */ + public function get($key) + { + return $this->_redis->get($key); + } + + // ------------------------------------------------------------------------ + + /** + * Save cache + * + * @param string Cache key identifier + * @param mixed Data to save + * @param int Time to live + * @return bool + */ + public function save($key, $value, $ttl = NULL) + { + return ($ttl) + ? $this->_redis->setex($key, $ttl, $value) + : $this->_redis->set($key, $value); + } + + // ------------------------------------------------------------------------ + + /** + * Delete from cache + * + * @param string Cache key + * @return bool + */ + public function delete($key) + { + return ($this->_redis->delete($key) === 1); + } + + // ------------------------------------------------------------------------ + + /** + * Clean cache + * + * @return bool + * @see Redis::flushDB() + */ + public function clean() + { + return $this->_redis->flushDB(); + } + + // ------------------------------------------------------------------------ + + /** + * Get cache driver info + * + * @param string Not supported in Redis. + * Only included in order to offer a + * consistent cache API. + * @return array + * @see Redis::info() + */ + public function cache_info($type = NULL) + { + return $this->_redis->info(); + } + + // ------------------------------------------------------------------------ + + /** + * Get cache metadata + * + * @param string Cache key + * @return array + */ + public function get_metadata($key) + { + $value = $this->get($key); + + if ($value) + { + return array( + 'expire' => time() + $this->_redis->ttl($key), + 'data' => $value + ); + } + + return FALSE; + } + + // ------------------------------------------------------------------------ + + /** + * Check if Redis driver is supported + * + * @return bool + */ + public function is_supported() + { + if (extension_loaded('redis')) + { + $this->_setup_redis(); + return TRUE; + } + else + { + log_message('error', 'The Redis extension must be loaded to use Redis cache.'); + return FALSE; + } + } + + // ------------------------------------------------------------------------ + + /** + * Setup Redis config and connection + * + * Loads Redis config file if present. Will halt execution + * if a Redis connection can't be established. + * + * @return bool + * @see Redis::connect() + */ + protected function _setup_redis() + { + $config = array(); + $CI =& get_instance(); + + if ($CI->config->load('redis', TRUE, TRUE)) + { + $config += $CI->config->item('redis'); + } + + $config = array_merge(self::$_default_config, $config); + + $this->_redis = new Redis(); + + try + { + $this->_redis->connect($config['host'], $config['port'], $config['timeout']); + } + catch (RedisException $e) + { + show_error('Redis connection refused. ' . $e->getMessage()); + } + + if (isset($config['password'])) + { + $this->_redis->auth($config['password']); + } + } + + // ------------------------------------------------------------------------ + + /** + + * Class destructor + * + * Closes the connection to Redis if present. + * + * @return void + */ + public function __destruct() + { + if ($this->_redis) + { + $this->_redis->close(); + } + } + +} + +/* End of file Cache_redis.php */ +/* Location: ./system/libraries/Cache/drivers/Cache_redis.php */
\ No newline at end of file diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php index b32e66a46..9154f3fce 100644 --- a/system/libraries/Cache/drivers/Cache_wincache.php +++ b/system/libraries/Cache/drivers/Cache_wincache.php @@ -1,8 +1,8 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * @@ -18,12 +18,13 @@ * * @package CodeIgniter * @author EllisLab Dev Team - * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc. + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 3.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Wincache Caching Class @@ -78,7 +79,7 @@ class CI_Cache_wincache extends CI_Driver { * Delete from Cache * * @param mixed unique identifier of the item in the cache - * @param bool true on success/false on failure + * @return bool true on success/false on failure */ public function delete($id) { @@ -126,10 +127,10 @@ class CI_Cache_wincache extends CI_Driver { $hitcount = $stored['ucache_entries'][1]['hitcount']; return array( - 'expire' => $ttl - $age, - 'hitcount' => $hitcount, - 'age' => $age, - 'ttl' => $ttl + 'expire' => $ttl - $age, + 'hitcount' => $hitcount, + 'age' => $age, + 'ttl' => $ttl ); } diff --git a/system/libraries/Cache/drivers/index.html b/system/libraries/Cache/drivers/index.html new file mode 100644 index 000000000..c942a79ce --- /dev/null +++ b/system/libraries/Cache/drivers/index.html @@ -0,0 +1,10 @@ +<html> +<head> + <title>403 Forbidden</title> +</head> +<body> + +<p>Directory access is forbidden.</p> + +</body> +</html>
\ No newline at end of file diff --git a/system/libraries/Cache/index.html b/system/libraries/Cache/index.html new file mode 100644 index 000000000..c942a79ce --- /dev/null +++ b/system/libraries/Cache/index.html @@ -0,0 +1,10 @@ +<html> +<head> + <title>403 Forbidden</title> +</head> +<body> + +<p>Directory access is forbidden.</p> + +</body> +</html>
\ No newline at end of file |