From bde25d971bfbf4a54f1d40eedfd3290ebb5f91e5 Mon Sep 17 00:00:00 2001 From: Greg Aker Date: Tue, 21 Dec 2010 09:31:21 -0600 Subject: Initial commit of Caching Driver. --- system/libraries/Cache/drivers/Cache_memcached.php | 209 +++++++++++++++++++++ 1 file changed, 209 insertions(+) create mode 100644 system/libraries/Cache/drivers/Cache_memcached.php (limited to 'system/libraries/Cache/drivers/Cache_memcached.php') diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php new file mode 100644 index 000000000..adc7fbf44 --- /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($stored) !== 3) + { + return FALSE; + } + + list($value, $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; + } + + $this->_setup_memcached(); + return TRUE; + } + + // ------------------------------------------------------------------------ + +} +// End Class + +/* End of file Cache_memcached.php */ +/* Location: ./system/libraries/Cache/drivers/Cache_memcached.php */ \ No newline at end of file -- cgit v1.2.3-24-g4f1b From 700205ad5cb6c00596ad82d5ed282f516add5481 Mon Sep 17 00:00:00 2001 From: Derek Jones Date: Fri, 28 Jan 2011 07:44:28 -0600 Subject: updating copyrights to 2011 --- system/libraries/Cache/drivers/Cache_memcached.php | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'system/libraries/Cache/drivers/Cache_memcached.php') diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php index adc7fbf44..a7efdc5de 100644 --- a/system/libraries/Cache/drivers/Cache_memcached.php +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -6,7 +6,7 @@ * * @package CodeIgniter * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2006 - 2010 EllisLab, Inc. + * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 2.0 -- cgit v1.2.3-24-g4f1b From 999e7472aa094dac056494ff41772f9204da04b2 Mon Sep 17 00:00:00 2001 From: Greg Aker Date: Sat, 29 Jan 2011 16:16:58 -0600 Subject: Fix #21 - Typo in get_metadata() function of apc and memcached cache drivers. --- system/libraries/Cache/drivers/Cache_memcached.php | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'system/libraries/Cache/drivers/Cache_memcached.php') diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php index a7efdc5de..5f5a31591 100644 --- a/system/libraries/Cache/drivers/Cache_memcached.php +++ b/system/libraries/Cache/drivers/Cache_memcached.php @@ -122,7 +122,7 @@ class Cache_memcached extends CI_Driver { return FALSE; } - list($value, $time, $ttl) = $stored; + list($data, $time, $ttl) = $stored; return array( 'expire' => $time + $ttl, -- cgit v1.2.3-24-g4f1b