diff options
Diffstat (limited to 'system/libraries/Cache/Cache.php')
| -rw-r--r-- | system/libraries/Cache/Cache.php | 86 |
1 files changed, 52 insertions, 34 deletions
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php index f98241617..53f9f81a7 100644 --- a/system/libraries/Cache/Cache.php +++ b/system/libraries/Cache/Cache.php @@ -36,17 +36,39 @@ */ class CI_Cache extends CI_Driver_Library { - protected $valid_drivers = array( - 'cache_apc', - 'cache_file', - 'cache_memcached', - 'cache_dummy', - 'cache_wincache' - ); - - protected $_cache_path = NULL; // Path of cache files (if file-based cache) - protected $_adapter = 'dummy'; - protected $_backup_driver; + /** + * Valid cache drivers + * + * @var array + */ + protected $valid_drivers = array( + 'cache_apc', + 'cache_file', + 'cache_memcached', + 'cache_dummy', + 'cache_wincache' + ); + + /** + * Path of cache files (if file-based cache) + * + * @var string + */ + protected $_cache_path = NULL; + + /** + * Reference to the driver + * + * @var mixed + */ + protected $_adapter = 'dummy'; + + /** + * Fallback driver + * + * @param string + */ + protected $_backup_driver = 'dummy'; /** * Constructor @@ -59,9 +81,9 @@ class CI_Cache extends CI_Driver_Library { public function __construct($config = array()) { $default_config = array( - 'adapter', - 'memcached' - ); + 'adapter', + 'memcached' + ); foreach ($default_config as $key) { @@ -80,6 +102,22 @@ class CI_Cache extends CI_Driver_Library { $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)) + { + // 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; + } + } } // ------------------------------------------------------------------------ @@ -184,26 +222,6 @@ 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 */ |