X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;ds=sidebyside;f=system%2Flibraries%2FCache%2Fdrivers%2FCache_memcached.php;fp=system%2Flibraries%2FCache%2Fdrivers%2FCache_memcached.php;h=ec2fd216af6490e71e7843daa7d0b057ef9c9f5a;hb=6d8f5b56b237767344bc4a283b4093e6d6f1a612;hp=0000000000000000000000000000000000000000;hpb=0f67329ebdddeb59a2b6b79aedb1fce421378ca8;p=living-lab-site.git diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php new file mode 100755 index 0000000..ec2fd21 --- /dev/null +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -0,0 +1,209 @@ + array( + 'default_host' => '127.0.0.1', + 'default_port' => 11211, + 'default_weight' => 1 + ) + ); + + // ------------------------------------------------------------------------ + + /** + * Fetch from cache + * + * @param mixed unique key id + * @return mixed data on success/false on failure + */ + public function get($id) + { + $data = $this->_memcached->get($id); + + return (is_array($data)) ? $data[0] : FALSE; + } + + // ------------------------------------------------------------------------ + + /** + * Save + * + * @param string unique identifier + * @param mixed data being cached + * @param int time to live + * @return boolean true on success, false on failure + */ + public function save($id, $data, $ttl = 60) + { + return $this->_memcached->add($id, array($data, time(), $ttl), $ttl); + } + + // ------------------------------------------------------------------------ + + /** + * Delete from Cache + * + * @param mixed key to be deleted. + * @return boolean true on success, false on failure + */ + public function delete($id) + { + return $this->_memcached->delete($id); + } + + // ------------------------------------------------------------------------ + + /** + * Clean the Cache + * + * @return boolean false on failure/true on success + */ + public function clean() + { + return $this->_memcached->flush(); + } + + // ------------------------------------------------------------------------ + + /** + * Cache Info + * + * @param null type not supported in memcached + * @return mixed array on success, false on failure + */ + public function cache_info($type = NULL) + { + return $this->_memcached->getStats(); + } + + // ------------------------------------------------------------------------ + + /** + * Get Cache Metadata + * + * @param mixed key to get cache metadata on + * @return mixed FALSE on failure, array on success. + */ + public function get_metadata($id) + { + $stored = $this->_memcached->get($id); + + if (count($stored) !== 3) + { + return FALSE; + } + + list($data, $time, $ttl) = $stored; + + return array( + 'expire' => $time + $ttl, + 'mtime' => $time, + 'data' => $data + ); + } + + // ------------------------------------------------------------------------ + + /** + * Setup memcached. + */ + private function _setup_memcached() + { + // Try to load memcached server info from the config file. + $CI =& get_instance(); + if ($CI->config->load('memcached', TRUE, TRUE)) + { + if (is_array($CI->config->config['memcached'])) + { + $this->_memcache_conf = NULL; + + foreach ($CI->config->config['memcached'] as $name => $conf) + { + $this->_memcache_conf[$name] = $conf; + } + } + } + + $this->_memcached = new Memcached(); + + foreach ($this->_memcache_conf as $name => $cache_server) + { + if ( ! array_key_exists('hostname', $cache_server)) + { + $cache_server['hostname'] = $this->_default_options['default_host']; + } + + if ( ! array_key_exists('port', $cache_server)) + { + $cache_server['port'] = $this->_default_options['default_port']; + } + + if ( ! array_key_exists('weight', $cache_server)) + { + $cache_server['weight'] = $this->_default_options['default_weight']; + } + + $this->_memcached->addServer( + $cache_server['hostname'], $cache_server['port'], $cache_server['weight'] + ); + } + } + + // ------------------------------------------------------------------------ + + + /** + * Is supported + * + * Returns FALSE if memcached is not supported on the system. + * If it is, we setup the memcached object & return TRUE + */ + public function is_supported() + { + if ( ! extension_loaded('memcached')) + { + log_message('error', 'The Memcached Extension must be loaded to use Memcached Cache.'); + + return FALSE; + } + + $this->_setup_memcached(); + return TRUE; + } + + // ------------------------------------------------------------------------ + +} +// End Class + +/* End of file Cache_memcached.php */ +/* Location: ./system/libraries/Cache/drivers/Cache_memcached.php */ \ No newline at end of file