Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch '2.2-redis-engine' into 2.2
- Loading branch information
Showing
2 changed files
with
552 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,216 @@ | ||
<?php | ||
/** | ||
* Redis storage engine for cache | ||
* | ||
* | ||
* PHP 5 | ||
* | ||
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org) | ||
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org) | ||
* | ||
* Licensed under The MIT License | ||
* Redistributions of files must retain the above copyright notice. | ||
* | ||
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org) | ||
* @link http://cakephp.org CakePHP(tm) Project | ||
* @package Cake.Cache.Engine | ||
* @since CakePHP(tm) v 2.2 | ||
* @license MIT License (http://www.opensource.org/licenses/mit-license.php) | ||
*/ | ||
|
||
/** | ||
* Redis storage engine for cache. | ||
* | ||
* @package Cake.Cache.Engine | ||
*/ | ||
class RedisEngine extends CacheEngine { | ||
|
||
/** | ||
* Redis wrapper. | ||
* | ||
* @var Redis | ||
*/ | ||
protected $_Redis = null; | ||
|
||
/** | ||
* Settings | ||
* | ||
* - server = string url or ip to the Redis server host | ||
* | ||
* @var array | ||
*/ | ||
public $settings = array(); | ||
|
||
/** | ||
* Initialize the Cache Engine | ||
* | ||
* Called automatically by the cache frontend | ||
* To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array()); | ||
* | ||
* @param array $settings array of setting for the engine | ||
* @return boolean True if the engine has been successfully initialized, false if not | ||
*/ | ||
public function init($settings = array()) { | ||
if (!class_exists('Redis')) { | ||
return false; | ||
} | ||
parent::init(array_merge(array( | ||
'engine' => 'Redis', | ||
'prefix' => null, | ||
'server' => '127.0.0.1', | ||
'port' => null, | ||
'persistent' => true, | ||
'serialize' => true | ||
), $settings) | ||
); | ||
|
||
return $this->_connect(); | ||
} | ||
|
||
/** | ||
* Connects to a Redis server | ||
* | ||
* @return boolean True if Redis server was connected | ||
*/ | ||
protected function _connect() { | ||
$return = false; | ||
try { | ||
$this->_Redis = new Redis(); | ||
if (empty($this->settings['persistent'])) { | ||
$return = $this->_Redis->connect($this->settings['server']); | ||
} else { | ||
$return = $this->_Redis->pconnect($this->settings['server']); | ||
} | ||
} catch (RedisException $e) { | ||
return false; | ||
} | ||
return $return; | ||
} | ||
|
||
/** | ||
* Write data for key into cache. | ||
* | ||
* @param string $key Identifier for the data | ||
* @param mixed $value Data to be cached | ||
* @param integer $duration How long to cache the data, in seconds | ||
* @return boolean True if the data was successfully cached, false on failure | ||
*/ | ||
public function write($key, $value, $duration) { | ||
if (!is_int($value)) { | ||
$value = serialize($value); | ||
} | ||
if ($duration === 0) { | ||
return $this->_Redis->set($key, $value); | ||
} | ||
|
||
return $this->_Redis->setex($key, $duration, $value); | ||
} | ||
|
||
/** | ||
* Read a key from the cache | ||
* | ||
* @param string $key Identifier for the data | ||
* @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it | ||
*/ | ||
public function read($key) { | ||
$value = $this->_Redis->get($key); | ||
if (ctype_digit($value)) { | ||
$value = (int) $value; | ||
} | ||
if ($value !== false && is_string($value)) { | ||
$value = unserialize($value); | ||
} | ||
return $value; | ||
} | ||
|
||
/** | ||
* Increments the value of an integer cached key | ||
* | ||
* @param string $key Identifier for the data | ||
* @param integer $offset How much to increment | ||
* @return New incremented value, false otherwise | ||
* @throws CacheException when you try to increment with compress = true | ||
*/ | ||
public function increment($key, $offset = 1) { | ||
return (int) $this->_Redis->incrBy($key, $offset); | ||
} | ||
|
||
/** | ||
* Decrements the value of an integer cached key | ||
* | ||
* @param string $key Identifier for the data | ||
* @param integer $offset How much to subtract | ||
* @return New decremented value, false otherwise | ||
* @throws CacheException when you try to decrement with compress = true | ||
*/ | ||
public function decrement($key, $offset = 1) { | ||
return (int) $this->_Redis->decrBy($key, $offset); | ||
} | ||
|
||
/** | ||
* Delete a key from the cache | ||
* | ||
* @param string $key Identifier for the data | ||
* @return boolean True if the value was successfully deleted, false if it didn't exist or couldn't be removed | ||
*/ | ||
public function delete($key) { | ||
return $this->_Redis->delete($key) > 0; | ||
} | ||
|
||
/** | ||
* Delete all keys from the cache | ||
* | ||
* @param boolean $check | ||
* @return boolean True if the cache was successfully cleared, false otherwise | ||
*/ | ||
public function clear($check) { | ||
if ($check) { | ||
return true; | ||
} | ||
$keys = $this->_Redis->getKeys($this->settings['prefix'] . '*'); | ||
$this->_Redis->del($keys); | ||
|
||
return true; | ||
} | ||
|
||
/** | ||
* Returns the `group value` for each of the configured groups | ||
* If the group initial value was not found, then it initializes | ||
* the group accordingly. | ||
* | ||
* @return array | ||
**/ | ||
public function groups() { | ||
$result = array(); | ||
foreach ($this->settings['groups'] as $group) { | ||
$value = $this->_Redis->get($this->settings['prefix'] . $group); | ||
if (!$value) { | ||
$value = 1; | ||
$this->_Redis->set($this->settings['prefix'] . $group, $value); | ||
} | ||
$result[] = $group . $value; | ||
} | ||
return $result; | ||
} | ||
|
||
/** | ||
* Increments the group value to simulate deletion of all keys under a group | ||
* old values will remain in storage until they expire. | ||
* | ||
* @return boolean success | ||
**/ | ||
public function clearGroup($group) { | ||
return (bool)$this->_Redis->incr($this->settings['prefix'] . $group); | ||
} | ||
|
||
/** | ||
* Disconnects from the redis server | ||
* | ||
* @return voind | ||
**/ | ||
public function __destruct() { | ||
if (!$this->settings['persistent']) { | ||
$this->_Redis->close(); | ||
} | ||
} | ||
} |
Oops, something went wrong.