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-rw-r--r--system/libraries/Cache/Cache.php70
1 files changed, 44 insertions, 26 deletions
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index 5c9d78735..8d8c0db34 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -36,6 +36,11 @@
*/
class CI_Cache extends CI_Driver_Library {
+ /**
+ * Valid cache drivers
+ *
+ * @var array
+ */
protected $valid_drivers = array(
'cache_apc',
'cache_dummy',
@@ -45,9 +50,26 @@ class CI_Cache extends CI_Driver_Library {
'cache_wincache'
);
- protected $_cache_path = NULL; // Path of cache files (if file-based cache)
- protected $_adapter = 'dummy';
- protected $_backup_driver;
+ /**
+ * 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 $_backup_driver = 'dummy';
/**
* Constructor
@@ -60,9 +82,9 @@ class CI_Cache extends CI_Driver_Library {
public function __construct($config = array())
{
$default_config = array(
- 'adapter',
- 'memcached'
- );
+ 'adapter',
+ 'memcached'
+ );
foreach ($default_config as $key)
{
@@ -81,6 +103,22 @@ 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;
+ }
+ }
}
// ------------------------------------------------------------------------
@@ -185,26 +223,6 @@ 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 */