pictcode / lib / Cake / Cache / Engine / WincacheEngine.php @ 9d2f0219
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| 1 | 635eef61 | spyder1211 | <?php
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| 2 | /**
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| 3 | * Wincache storage engine for cache.
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| 4 | *
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| 5 | * Supports wincache 1.1.0 and higher.
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| 6 | *
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| 7 | * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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| 8 | * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 9 | *
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| 10 | * Licensed under The MIT License
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| 11 | * For full copyright and license information, please see the LICENSE.txt
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| 12 | * Redistributions of files must retain the above copyright notice.
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| 13 | *
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| 14 | * @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 15 | * @link http://cakephp.org CakePHP(tm) Project
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| 16 | * @package Cake.Cache.Engine
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| 17 | * @since CakePHP(tm) v 1.2.0.4933
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| 18 | * @license http://www.opensource.org/licenses/mit-license.php MIT License
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| 19 | */
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| 20 | |||
| 21 | /**
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| 22 | * Wincache storage engine for cache
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| 23 | *
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| 24 | * @package Cake.Cache.Engine
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| 25 | */
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| 26 | class WincacheEngine extends CacheEngine { |
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| 27 | |||
| 28 | /**
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| 29 | * Contains the compiled group names
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| 30 | * (prefixed with the global configuration prefix)
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| 31 | *
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| 32 | * @var array
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| 33 | */
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| 34 | protected $_compiledGroupNames = array(); |
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| 35 | |||
| 36 | /**
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| 37 | * Initialize the Cache Engine
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| 38 | *
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| 39 | * Called automatically by the cache frontend
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| 40 | * To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array());
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| 41 | *
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| 42 | * @param array $settings array of setting for the engine
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| 43 | * @return bool True if the engine has been successfully initialized, false if not
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| 44 | * @see CacheEngine::__defaults
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| 45 | */
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| 46 | public function init($settings = array()) { |
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| 47 | if (!isset($settings['prefix'])) { |
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| 48 | $settings['prefix'] = Inflector::slug(APP_DIR) . '_'; |
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| 49 | } |
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| 50 | $settings += array('engine' => 'Wincache'); |
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| 51 | parent::init($settings); |
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| 52 | return function_exists('wincache_ucache_info'); |
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| 53 | } |
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| 54 | |||
| 55 | /**
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| 56 | * Write data for key into cache
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| 57 | *
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| 58 | * @param string $key Identifier for the data
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| 59 | * @param mixed $value Data to be cached
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| 60 | * @param int $duration How long to cache the data, in seconds
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| 61 | * @return bool True if the data was successfully cached, false on failure
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| 62 | */
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| 63 | public function write($key, $value, $duration) { |
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| 64 | $expires = time() + $duration; |
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| 65 | |||
| 66 | $data = array( |
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| 67 | $key . '_expires' => $expires, |
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| 68 | $key => $value |
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| 69 | ); |
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| 70 | $result = wincache_ucache_set($data, null, $duration); |
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| 71 | return empty($result); |
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| 72 | } |
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| 73 | |||
| 74 | /**
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| 75 | * Read a key from the cache
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| 76 | *
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| 77 | * @param string $key Identifier for the data
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| 78 | * @return mixed The cached data, or false if the data doesn't exist, has expired, or if
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| 79 | * there was an error fetching it
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| 80 | */
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| 81 | public function read($key) { |
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| 82 | $time = time(); |
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| 83 | $cachetime = (int)wincache_ucache_get($key . '_expires'); |
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| 84 | if ($cachetime < $time || ($time + $this->settings['duration']) < $cachetime) { |
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| 85 | return false; |
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| 86 | } |
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| 87 | return wincache_ucache_get($key); |
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| 88 | } |
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| 89 | |||
| 90 | /**
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| 91 | * Increments the value of an integer cached key
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| 92 | *
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| 93 | * @param string $key Identifier for the data
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| 94 | * @param int $offset How much to increment
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| 95 | * @return New incremented value, false otherwise
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| 96 | */
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| 97 | public function increment($key, $offset = 1) { |
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| 98 | return wincache_ucache_inc($key, $offset); |
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| 99 | } |
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| 100 | |||
| 101 | /**
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| 102 | * Decrements the value of an integer cached key
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| 103 | *
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| 104 | * @param string $key Identifier for the data
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| 105 | * @param int $offset How much to subtract
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| 106 | * @return New decremented value, false otherwise
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| 107 | */
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| 108 | public function decrement($key, $offset = 1) { |
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| 109 | return wincache_ucache_dec($key, $offset); |
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| 110 | } |
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| 111 | |||
| 112 | /**
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| 113 | * Delete a key from the cache
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| 114 | *
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| 115 | * @param string $key Identifier for the data
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| 116 | * @return bool True if the value was successfully deleted, false if it didn't exist or couldn't be removed
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| 117 | */
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| 118 | public function delete($key) { |
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| 119 | return wincache_ucache_delete($key); |
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| 120 | } |
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| 121 | |||
| 122 | /**
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| 123 | * Delete all keys from the cache. This will clear every
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| 124 | * item in the cache matching the cache config prefix.
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| 125 | *
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| 126 | * @param bool $check If true, nothing will be cleared, as entries will
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| 127 | * naturally expire in wincache..
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| 128 | * @return bool True Returns true.
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| 129 | */
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| 130 | public function clear($check) { |
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| 131 | if ($check) { |
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| 132 | return true; |
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| 133 | } |
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| 134 | $info = wincache_ucache_info();
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| 135 | $cacheKeys = $info['ucache_entries']; |
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| 136 | unset($info); |
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| 137 | foreach ($cacheKeys as $key) { |
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| 138 | if (strpos($key['key_name'], $this->settings['prefix']) === 0) { |
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| 139 | wincache_ucache_delete($key['key_name']); |
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| 140 | } |
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| 141 | } |
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| 142 | return true; |
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| 143 | } |
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| 144 | |||
| 145 | /**
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| 146 | * Returns the `group value` for each of the configured groups
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| 147 | * If the group initial value was not found, then it initializes
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| 148 | * the group accordingly.
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| 149 | *
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| 150 | * @return array
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| 151 | */
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| 152 | public function groups() { |
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| 153 | if (empty($this->_compiledGroupNames)) { |
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| 154 | foreach ($this->settings['groups'] as $group) { |
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| 155 | $this->_compiledGroupNames[] = $this->settings['prefix'] . $group; |
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| 156 | } |
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| 157 | } |
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| 158 | |||
| 159 | $groups = wincache_ucache_get($this->_compiledGroupNames); |
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| 160 | if (count($groups) !== count($this->settings['groups'])) { |
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| 161 | foreach ($this->_compiledGroupNames as $group) { |
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| 162 | if (!isset($groups[$group])) { |
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| 163 | wincache_ucache_set($group, 1); |
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| 164 | $groups[$group] = 1; |
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| 165 | } |
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| 166 | } |
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| 167 | ksort($groups); |
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| 168 | } |
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| 169 | |||
| 170 | $result = array(); |
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| 171 | $groups = array_values($groups); |
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| 172 | foreach ($this->settings['groups'] as $i => $group) { |
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| 173 | $result[] = $group . $groups[$i]; |
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| 174 | } |
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| 175 | return $result; |
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| 176 | } |
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| 177 | |||
| 178 | /**
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| 179 | * Increments the group value to simulate deletion of all keys under a group
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| 180 | * old values will remain in storage until they expire.
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| 181 | *
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| 182 | * @param string $group The group to clear.
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| 183 | * @return bool success
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| 184 | */
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| 185 | public function clearGroup($group) { |
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| 186 | $success = null; |
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| 187 | wincache_ucache_inc($this->settings['prefix'] . $group, 1, $success); |
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| 188 | return $success; |
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| 189 | } |
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| 190 | |||
| 191 | } |