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Implementing cache lockig in FileEngine using SplFileObject

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José Lorenzo Rodríguez 2010-04-26 21:42:16 -04:30 • committed by predominant
parent 977f897a85
commit d3b257fffb
1 changed files with 22 additions and 9 deletions
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31
cake/libs/cache/file.php vendored
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@ -19,9 +19,6 @@
* @license MIT License (http://www.opensource.org/licenses/mit-license.php) * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/ */
if (!class_exists('File')) {
require LIBS . 'file.php';
}
/** /**
* File Storage engine for cache * File Storage engine for cache
* *
@ -32,9 +29,9 @@ if (!class_exists('File')) {
class FileEngine extends CacheEngine { class FileEngine extends CacheEngine {
/** /**
* Instance of File class * Instance of SplFileObject class
* *
* @var File * @var _File
* @access protected * @access protected
*/ */
protected $_File = null; protected $_File = null;
@ -126,11 +123,17 @@ class FileEngine extends CacheEngine {
} }
if ($this->settings['lock']) { if ($this->settings['lock']) {
//$this->_File->lock = true; $this->_File->flock(LOCK_EX);
} }
$expires = time() + $duration; $expires = time() + $duration;
$contents = $expires . $lineBreak . $data . $lineBreak; $contents = $expires . $lineBreak . $data . $lineBreak;
$success = $this->_File->ftruncate(0) && $this->_File->fwrite($contents); $success = $this->_File->ftruncate(0) && $this->_File->fwrite($contents);
if ($this->settings['lock']) {
$this->_File->flock(LOCK_EX);
}
return $success; return $success;
} }
@ -144,9 +147,11 @@ class FileEngine extends CacheEngine {
if (!$this->_init || $this->_setKey($key) === false) { if (!$this->_init || $this->_setKey($key) === false) {
return false; return false;
} }
if ($this->settings['lock']) { if ($this->settings['lock']) {
//$this->_File->lock = true; $this->_File->flock(LOCK_SH);
} }
$this->_File->rewind(); $this->_File->rewind();
$time = time(); $time = time();
$cachetime = intval($this->_File->current()); $cachetime = intval($this->_File->current());
@ -161,6 +166,11 @@ class FileEngine extends CacheEngine {
$data .= $this->_File->current(); $data .= $this->_File->current();
$this->_File->next(); $this->_File->next();
} }
if ($this->settings['lock']) {
$this->_File->flock(LOCK_SH);
}
$data = trim($data); $data = trim($data);
if ($data !== '' && !empty($this->settings['serialize'])) { if ($data !== '' && !empty($this->settings['serialize'])) {
@ -244,10 +254,11 @@ class FileEngine extends CacheEngine {
} }
/** /**
* Get absolute file for a given key * Sets the current cache key this class is managing
* *
* @param string $key The key * @param string $key The key
* @return mixed Absolute cache file for the given key or false if erroneous * @param boolean $createKey Whether the key should be created if it doesn't exists, or not
* @return boolean true if the cache key could be set, false otherwise
* @access protected * @access protected
*/ */
protected function _setKey($key, $createKey = false) { protected function _setKey($key, $createKey = false) {
@ -260,6 +271,8 @@ class FileEngine extends CacheEngine {
if (empty($this->_File) || $this->_File->getBaseName() !== $key) { if (empty($this->_File) || $this->_File->getBaseName() !== $key) {
$this->_File = $path->openFile('a+'); $this->_File = $path->openFile('a+');
} }
return true;
} }
/** /**