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<?php
/**
* codeigniter-memcache v0.1
*
* codeigniter-memcache is a codeigniter library to work with memcached easily.
*
*
* @file MemcacheLibrary.php
* @copyright 2010 egnity - egnity.com
* @author Emre Yilmaz <mail@emreyilmaz.me>
* @license GNU General Public License
* @version 0.1
*/
class MemcacheLibrary {
/**
* variable that holds memcached backend instance
*
* @var object
* @access public
*/
public $memcachedInstance;
/**
* variable that holds servers for the memcache
*
* @var array
* @access public
*/
public $servers = array();
/**
* main CodeIgniter instance
*
* @var object
* @access public
*/
public $CI;
/**
* constructor function for the library
*/
public function __construct() {
/* initialize memcached instance */
if(class_exists("Memcache")) {
$this->memcachedInstance = new Memcache();
} else {
throw new Exception(
"Memcached client doesn't exists in your PHP configuration"
);
}
/* load super CI instance */
$this->CI =& get_instance();
/* load default server info */
$this->CI->config->load("memcache");
/* connect to default server */
if($this->CI->config->item("MEMCACHE_HOST") && $this->CI->config->item("MEMCACHE_PORT") !== false) {
$this->addServer($this->CI->config->item("MEMCACHE_HOST"), $this->CI->config->item("MEMCACHE_PORT"));
}
}
/**
* adder function for the memcache servers
*
* @access public
* @return void
*/
public function addServer($server, $port) {
$this->servers[] = array(
"server" => $server,
"port" => $port,
);
$this->memcachedInstance->addServer($server, $port);
}
/**
* gets related key from the memcache
*
* @access public
*/
public function get($key) {
$this->logDebugMessage(sprintf("%s key requested from memcache", $key));
// hide notice if server is unreachable
$old_error_level = error_reporting();
error_reporting($old_error_level & ~E_NOTICE);
$ret = $this->memcachedInstance->get($key);
error_reporting($old_error_level);
return $ret;
}
/**
* sets related key to the memcache
*
* @access public
*/
public function set($key, $value, $expire = null) {
$this->logDebugMessage(
sprintf("%s key set to memcache. (expire: %s)",$key, $expire)
);
// hide notice if server is unreachable
$old_error_level = error_reporting();
error_reporting($old_error_level & ~E_NOTICE);
$ret = $this->memcachedInstance->set($key, $value, null, $expire);
error_reporting($old_error_level);
return $ret;
}
/**
* deletes related key from the memcache
*
* @access public
*/
public function delete($key) {
$this->logDebugMessage(sprintf("%s key deleted from memcache.", $key));
// hide notice if server is unreachable
$old_error_level = error_reporting();
error_reporting($old_error_level & ~E_NOTICE);
$ret = $this->memcachedInstance->delete($key);
error_reporting($old_error_level);
return $ret;
}
/**
* increments related key from the memcache
*
* @access public
*/
public function increment($key, $offset = 1) {
$this->logDebugMessage(sprintf("%s key incremented %s times", $key, $offset));
return $this->memcachedInstance->increment($key, $offset);
}
/**
* decrements related key from the memcache
*
* @access public
*/
public function decrement($key, $offset = 1) {
$this->logDebugMessage(sprintf("%s key decremented %s times", $key, $offset));
return $this->memcachedInstance->decrement($key, $offset);
}
/**
* gets running memcached servers.
*
* @access public
* @return array
*/
public function getRunningServers() {
return $this->servers;
}
/**
* array of server statistics, one entry per server.
*
* @access public
* @return array
*/
public function getStatistics() {
return $this->memcachedInstance->getStats();
}
/**
* Invalidates all items from the memcache.
*
* @access public
* @return boolean
*/
public function flush($delay = 0) {
$this->logDebugMessage(sprintf("memcache flushed! (delay: %s)", $delay));
return $this->memcachedInstance->flush($delay);
}
/**
* logs the memcache actions to the codeigniter's main logging system.
*
* @access private
*/
private function logDebugMessage($message) {
log_message("debug", $message);
}
}
# vim: set noet:
|
