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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)
*/
if (!class_exists('File')) {
require LIBS . 'file.php';
}
/**
* File Storage engine for cache
*
@ -32,9 +29,9 @@ if (!class_exists('File')) {
class FileEngine extends CacheEngine {
/**
* Instance of File class
* Instance of SplFileObject class
*
* @var File
* @var _File
* @access protected
*/
protected $_File = null;
@ -126,11 +123,17 @@ class FileEngine extends CacheEngine {
}
if ($this->settings['lock']) {
//$this->_File->lock = true;
$this->_File->flock(LOCK_EX);
}
$expires = time() + $duration;
$contents = $expires . $lineBreak . $data . $lineBreak;
$success = $this->_File->ftruncate(0) && $this->_File->fwrite($contents);
if ($this->settings['lock']) {
$this->_File->flock(LOCK_EX);
}
return $success;
}
@ -144,9 +147,11 @@ class FileEngine extends CacheEngine {
if (!$this->_init || $this->_setKey($key) === false) {
return false;
}
if ($this->settings['lock']) {
//$this->_File->lock = true;
$this->_File->flock(LOCK_SH);
}
$this->_File->rewind();
$time = time();
$cachetime = intval($this->_File->current());
@ -161,6 +166,11 @@ class FileEngine extends CacheEngine {
$data .= $this->_File->current();
$this->_File->next();
}
if ($this->settings['lock']) {
$this->_File->flock(LOCK_SH);
}
$data = trim($data);
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
* @return mixed Absolute cache file for the given key or false if erroneous
* @param boolean $createKey Whether the key should be created if it doesn't exists, or not
* @return boolean true if the cache key could be set, false otherwise
* @access protected
*/
protected function _setKey($key, $createKey = false) {
@ -260,6 +271,8 @@ class FileEngine extends CacheEngine {
if (empty($this->_File) || $this->_File->getBaseName() !== $key) {
$this->_File = $path->openFile('a+');
}
return true;
}
/**