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-rw-r--r--system/libraries/Cache/Cache.php70
-rw-r--r--system/libraries/Cache/drivers/Cache_apc.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_dummy.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_file.php24
-rw-r--r--system/libraries/Cache/drivers/Cache_memcached.php30
-rw-r--r--system/libraries/Cache/drivers/Cache_wincache.php2
6 files changed, 84 insertions, 46 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 $obj;
- }
-
}
/* End of file Cache.php */
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index 59ab67533..c85034f95 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -75,7 +75,7 @@ class CI_Cache_apc extends CI_Driver {
* Delete from Cache
*
* @param mixed unique identifier of the item in the cache
- * @param bool true on success/false on failure
+ * @return bool true on success/false on failure
*/
public function delete($id)
{
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index e8b791c5b..3f2b4b956 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -70,7 +70,7 @@ 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..5170de821 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -36,14 +36,24 @@
*/
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;
}
// ------------------------------------------------------------------------
@@ -61,7 +71,7 @@ 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'] + $data['ttl'])
{
@@ -86,10 +96,10 @@ class CI_Cache_file extends CI_Driver {
public function save($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)))
{
@@ -155,7 +165,7 @@ 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))
{
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index 4cd5f3d6f..bf90f6197 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -36,15 +36,25 @@
*/
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 $_memcache_conf = array(
- 'default' => array(
- 'default_host' => '127.0.0.1',
- 'default_port' => 11211,
- 'default_weight' => 1
- )
- );
+ 'default' => array(
+ 'default_host' => '127.0.0.1',
+ 'default_port' => 11211,
+ 'default_weight' => 1
+ )
+ );
/**
* Fetch from cache
@@ -67,7 +77,7 @@ class CI_Cache_memcached extends CI_Driver {
* @param string unique identifier
* @param mixed data being cached
* @param int time to live
- * @return bool true on success, false on failure
+ * @return bool true on success, false on failure
*/
public function save($id, $data, $ttl = 60)
{
@@ -89,7 +99,7 @@ class CI_Cache_memcached extends CI_Driver {
* Delete from Cache
*
* @param mixed key to be deleted.
- * @return bool true on success, false on failure
+ * @return bool true on success, false on failure
*/
public function delete($id)
{
@@ -202,7 +212,7 @@ 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.
$this->_memcached->addServer(
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
index b32e66a46..74048d564 100644
--- a/system/libraries/Cache/drivers/Cache_wincache.php
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -78,7 +78,7 @@ class CI_Cache_wincache extends CI_Driver {
* Delete from Cache
*
* @param mixed unique identifier of the item in the cache
- * @param bool true on success/false on failure
+ * @return bool true on success/false on failure
*/
public function delete($id)
{