diff options
Diffstat (limited to 'kohana/libraries/drivers/Cache/Memcache.php')
| -rw-r--r-- | kohana/libraries/drivers/Cache/Memcache.php | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/kohana/libraries/drivers/Cache/Memcache.php b/kohana/libraries/drivers/Cache/Memcache.php deleted file mode 100644 index d801de9c..00000000 --- a/kohana/libraries/drivers/Cache/Memcache.php +++ /dev/null @@ -1,191 +0,0 @@ -<?php defined('SYSPATH') OR die('No direct access allowed.'); -/** - * Memcache-based Cache driver. - * - * $Id: Memcache.php 4102 2009-03-19 12:55:54Z Shadowhand $ - * - * @package Cache - * @author Kohana Team - * @copyright (c) 2007-2008 Kohana Team - * @license http://kohanaphp.com/license.html - */ -class Cache_Memcache_Driver implements Cache_Driver { - - const TAGS_KEY = 'memcache_tags_array'; - - // Cache backend object and flags - protected $backend; - protected $flags; - - // Tags array - protected static $tags; - - // Have the tags been changed? - protected static $tags_changed = FALSE; - - public function __construct() - { - if ( ! extension_loaded('memcache')) - throw new Kohana_Exception('cache.extension_not_loaded', 'memcache'); - - $this->backend = new Memcache; - $this->flags = Kohana::config('cache_memcache.compression') ? MEMCACHE_COMPRESSED : FALSE; - - $servers = Kohana::config('cache_memcache.servers'); - - foreach ($servers as $server) - { - // Make sure all required keys are set - $server += array('host' => '127.0.0.1', 'port' => 11211, 'persistent' => FALSE); - - // Add the server to the pool - $this->backend->addServer($server['host'], $server['port'], (bool) $server['persistent']) - or Kohana::log('error', 'Cache: Connection failed: '.$server['host']); - } - - // Load tags - self::$tags = $this->backend->get(self::TAGS_KEY); - - if ( ! is_array(self::$tags)) - { - // Create a new tags array - self::$tags = array(); - - // Tags have been created - self::$tags_changed = TRUE; - } - } - - public function __destruct() - { - if (self::$tags_changed === TRUE) - { - // Save the tags - $this->backend->set(self::TAGS_KEY, self::$tags, $this->flags, 0); - - // Tags are now unchanged - self::$tags_changed = FALSE; - } - } - - public function find($tag) - { - if (isset(self::$tags[$tag]) AND $results = $this->backend->get(self::$tags[$tag])) - { - // Return all the found caches - return $results; - } - else - { - // No matching tags - return array(); - } - } - - public function get($id) - { - return (($return = $this->backend->get($id)) === FALSE) ? NULL : $return; - } - - public function set($id, $data, array $tags = NULL, $lifetime) - { - if ( ! empty($tags)) - { - // Tags will be changed - self::$tags_changed = TRUE; - - foreach ($tags as $tag) - { - // Add the id to each tag - self::$tags[$tag][$id] = $id; - } - } - - if ($lifetime !== 0) - { - // Memcache driver expects unix timestamp - $lifetime += time(); - } - - // Set a new value - return $this->backend->set($id, $data, $this->flags, $lifetime); - } - - public function delete($id, $tag = FALSE) - { - // Tags will be changed - self::$tags_changed = TRUE; - - if ($id === TRUE) - { - if ($status = $this->backend->flush()) - { - // Remove all tags, all items have been deleted - self::$tags = array(); - - // We must sleep after flushing, or overwriting will not work! - // @see http://php.net/manual/en/function.memcache-flush.php#81420 - sleep(1); - } - - return $status; - } - elseif ($tag === TRUE) - { - if (isset(self::$tags[$id])) - { - foreach (self::$tags[$id] as $_id) - { - // Delete each id in the tag - $this->backend->delete($_id); - } - - // Delete the tag - unset(self::$tags[$id]); - } - - return TRUE; - } - else - { - foreach (self::$tags as $tag => $_ids) - { - if (isset(self::$tags[$tag][$id])) - { - // Remove the id from the tags - unset(self::$tags[$tag][$id]); - } - } - - return $this->backend->delete($id); - } - } - - public function delete_expired() - { - // Tags will be changed - self::$tags_changed = TRUE; - - foreach (self::$tags as $tag => $_ids) - { - foreach ($_ids as $id) - { - if ( ! $this->backend->get($id)) - { - // This id has disappeared, delete it from the tags - unset(self::$tags[$tag][$id]); - } - } - - if (empty(self::$tags[$tag])) - { - // The tag no longer has any valid ids - unset(self::$tags[$tag]); - } - } - - // Memcache handles garbage collection internally - return TRUE; - } - -} // End Cache Memcache Driver |