/lib/Cake/Cache/Engine/MemcacheEngine.php - アノテート - pictcode - Redmine

pictcode / lib / Cake / Cache / Engine / MemcacheEngine.php @ 635eef61

-eef61
+<?php
 /**
  * Memcache storage engine for cache
+ *
  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
  * Licensed under The MIT License
  * For full copyright and license information, please see the LICENSE.txt
  * Redistributions of files must retain the above copyright notice.
+ *
  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  * @link          http://cakephp.org CakePHP(tm) Project
  * @package       Cake.Cache.Engine
  * @since         CakePHP(tm) v 1.2.0.4933
  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
  */
 /**
  * Memcache storage engine for cache. Memcache has some limitations in the amount of
  * control you have over expire times far in the future. See MemcacheEngine::write() for
  * more information.
+ *
  * @package Cake.Cache.Engine
  * @deprecated 3.0.0 You should use the Memcached adapter instead.
  */
 class MemcacheEngine extends CacheEngine {
 /**
  * Contains the compiled group names
  * (prefixed with the global configuration prefix)
+ *
  * @var array
  */
         protected $_compiledGroupNames = array();
 /**
  * Memcache wrapper.
+ *
  * @var Memcache
  */
         protected $_Memcache = null;
 /**
  * Settings
+ *
  *  - servers = string or array of memcache servers, default => 127.0.0.1. If an
  *    array MemcacheEngine will use them as a pool.
  *  - compress = boolean, default => false
+ *
  * @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 $settings array of setting for the engine
  * @return bool True if the engine has been successfully initialized, false if not
  */
         public function init($settings = array()) {
                 if (!class_exists('Memcache')) {
                         return false;
+                }
                 if (!isset($settings['prefix'])) {
                         $settings['prefix'] = Inflector::slug(APP_DIR) . '_';
+                }
                 $settings += array(
                         'engine' => 'Memcache',
                         'servers' => array('127.0.0.1'),
                         'compress' => false,
                         'persistent' => true
                 );
                 parent::init($settings);
                 if ($this->settings['compress']) {
                         $this->settings['compress'] = MEMCACHE_COMPRESSED;
+                }
                 if (is_string($this->settings['servers'])) {
                         $this->settings['servers'] = array($this->settings['servers']);
+                }
                 if (!isset($this->_Memcache)) {
                         $return = false;
                         $this->_Memcache = new Memcache();
                         foreach ($this->settings['servers'] as $server) {
                                 list($host, $port) = $this->_parseServerString($server);
                                 if ($this->_Memcache->addServer($host, $port, $this->settings['persistent'])) {
                                         $return = true;
+                                }
+                        }
                         return $return;
+                }
                 return true;
+        }
 /**
  * Parses the server address into the host/port. Handles both IPv6 and IPv4
  * addresses and Unix sockets
+ *
  * @param string $server The server address string.
  * @return array Array containing host, port
  */
         protected function _parseServerString($server) {
                 if (strpos($server, 'unix://') === 0) {
                         return array($server, 0);
+                }
                 if (substr($server, 0, 1) === '[') {
                         $position = strpos($server, ']:');
                         if ($position !== false) {
                                 $position++;
+                        }
                 } else {
                         $position = strpos($server, ':');
+                }
                 $port = 11211;
                 $host = $server;
                 if ($position !== false) {
                         $host = substr($server, 0, $position);
                         $port = substr($server, $position + 1);
+                }
                 return array($host, $port);
+        }
 /**
  * Write data for key into cache. When using memcache as your cache engine
  * remember that the Memcache pecl extension does not support cache expiry times greater
  * than 30 days in the future. Any duration greater than 30 days will be treated as never expiring.
+ *
  * @param string $key Identifier for the data
  * @param mixed $value Data to be cached
  * @param int $duration How long to cache the data, in seconds
  * @return bool True if the data was successfully cached, false on failure
  * @see http://php.net/manual/en/memcache.set.php
  */
         public function write($key, $value, $duration) {
                 if ($duration > 30 * DAY) {
                         $duration = 0;
+                }
                 return $this->_Memcache->set($key, $value, $this->settings['compress'], $duration);
+        }
 /**
  * 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) {
                 return $this->_Memcache->get($key);
+        }
 /**
  * Increments the value of an integer cached key
+ *
  * @param string $key Identifier for the data
  * @param int $offset How much to increment
  * @return New incremented value, false otherwise
  * @throws CacheException when you try to increment with compress = true
  */
         public function increment($key, $offset = 1) {
                 if ($this->settings['compress']) {
                         throw new CacheException(
                                 __d('cake_dev', 'Method %s not implemented for compressed cache in %s', 'increment()', __CLASS__)
                         );
+                }
                 return $this->_Memcache->increment($key, $offset);
+        }
 /**
  * Decrements the value of an integer cached key
+ *
  * @param string $key Identifier for the data
  * @param int $offset How much to subtract
  * @return New decremented value, false otherwise
  * @throws CacheException when you try to decrement with compress = true
  */
         public function decrement($key, $offset = 1) {
                 if ($this->settings['compress']) {
                         throw new CacheException(
                                 __d('cake_dev', 'Method %s not implemented for compressed cache in %s', 'decrement()', __CLASS__)
                         );
+                }
                 return $this->_Memcache->decrement($key, $offset);
+        }
 /**
  * Delete a key from the cache
+ *
  * @param string $key Identifier for the data
  * @return bool True if the value was successfully deleted, false if it didn't exist or couldn't be removed
  */
         public function delete($key) {
                 return $this->_Memcache->delete($key);
+        }
 /**
  * Delete all keys from the cache
+ *
  * @param bool $check If true no deletes will occur and instead CakePHP will rely
  *   on key TTL values.
  * @return bool True if the cache was successfully cleared, false otherwise
  */
         public function clear($check) {
                 if ($check) {
                         return true;
+                }
                 foreach ($this->_Memcache->getExtendedStats('slabs', 0) as $slabs) {
                         foreach (array_keys($slabs) as $slabId) {
                                 if (!is_numeric($slabId)) {
                                         continue;
+                                }
                                 foreach ($this->_Memcache->getExtendedStats('cachedump', $slabId, 0) as $stats) {
                                         if (!is_array($stats)) {
                                                 continue;
+                                        }
                                         foreach (array_keys($stats) as $key) {
                                                 if (strpos($key, $this->settings['prefix']) === 0) {
                                                         $this->_Memcache->delete($key);
+                                                }
+                                        }
+                                }
+                        }
+                }
                 return true;
+        }
 /**
  * Connects to a server in connection pool
+ *
  * @param string $host host ip address or name
  * @param int $port Server port
  * @return bool True if memcache server was connected
  */
         public function connect($host, $port = 11211) {
                 if ($this->_Memcache->getServerStatus($host, $port) === 0) {
                         if ($this->_Memcache->connect($host, $port)) {
                                 return true;
+                        }
                         return false;
+                }
                 return true;
+        }
 /**
  * Returns the `group value` for each of the configured groups
  * If the group initial value was not found, then it initializes
  * the group accordingly.
+ *
  * @return array
  */
         public function groups() {
                 if (empty($this->_compiledGroupNames)) {
                         foreach ($this->settings['groups'] as $group) {
                                 $this->_compiledGroupNames[] = $this->settings['prefix'] . $group;
+                        }
+                }
                 $groups = $this->_Memcache->get($this->_compiledGroupNames);
                 if (count($groups) !== count($this->settings['groups'])) {
                         foreach ($this->_compiledGroupNames as $group) {
                                 if (!isset($groups[$group])) {
                                         $this->_Memcache->set($group, 1, false, 0);
                                         $groups[$group] = 1;
+                                }
+                        }
                         ksort($groups);
+                }
                 $result = array();
                 $groups = array_values($groups);
                 foreach ($this->settings['groups'] as $i => $group) {
                         $result[] = $group . $groups[$i];
+                }
                 return $result;
+        }
 /**
  * Increments the group value to simulate deletion of all keys under a group
  * old values will remain in storage until they expire.
+ *
  * @param string $group The group to clear.
  * @return bool success
  */
         public function clearGroup($group) {
                 return (bool)$this->_Memcache->increment($this->settings['prefix'] . $group);
+        }
+}