mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-24 08:53:37 +01:00
91a24e0399
Also did some benchmarking on my Macbook (with a SSD and memcached running on localhost): Checking egw_cache_memcache: 0 checks failed, 100 iterations took 0.480 sec Checking egw_cache_apc: 0 checks failed, 100 iterations took 0.025 sec Checking egw_cache_files: 0 checks failed, 100 iterations took 0.826 sec --> APC is by a factor of 20 faster then memcached, which is double as fast compared to files on a SSD
135 lines
3.5 KiB
PHP
135 lines
3.5 KiB
PHP
<?php
|
|
/**
|
|
* EGroupware API: Caching provider storing data to files
|
|
*
|
|
* @link http://www.egroupware.org
|
|
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
|
|
* @package api
|
|
* @subpackage cache
|
|
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
|
|
* @copyright (c) 2009-12 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
* Caching provider storing data in files
|
|
*
|
|
* The provider creates subdirs under a given path
|
|
* for each values in $key
|
|
*/
|
|
class egw_cache_files extends egw_cache_provider_check implements egw_cache_provider
|
|
{
|
|
/**
|
|
* Extension of file used to store expiration > 0
|
|
*/
|
|
const EXPIRATION_EXTENSION = '.expiration';
|
|
|
|
/**
|
|
* Path of base-directory for the cache, set via parameter to the constructor or defaults to temp_dir
|
|
*
|
|
* @var string
|
|
*/
|
|
protected $base_path;
|
|
|
|
/**
|
|
* Constructor, eg. opens the connection to the backend
|
|
*
|
|
* @throws Exception if connection to backend could not be established
|
|
* @param array $params eg. array(host,port) or array(directory) depending on the provider
|
|
*/
|
|
function __construct(array $params)
|
|
{
|
|
if ($params)
|
|
{
|
|
$this->base_path = $params[0];
|
|
}
|
|
else
|
|
{
|
|
$this->base_path = egw_cache::get_system_config('temp_dir').'/egw_cache';
|
|
}
|
|
if (!isset($this->base_path) || !file_exists($this->base_path) && !mkdir($this->base_path,0700,true))
|
|
{
|
|
throw new Exception (__METHOD__."() can't create basepath $this->base_path!");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stores some data in the cache
|
|
*
|
|
* @param array $keys eg. array($level,$app,$location)
|
|
* @param mixed $data
|
|
* @param int $expiration=0
|
|
* @return boolean true on success, false on error
|
|
*/
|
|
function set(array $keys,$data,$expiration=0)
|
|
{
|
|
if ($ret = @file_put_contents($fname=$this->filename($keys,true),serialize($data),LOCK_EX) > 0)
|
|
{
|
|
if ((int)$expiration > 0) file_put_contents($fname.self::EXPIRATION_EXTENSION,(string)$expiration);
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Get some data from the cache
|
|
*
|
|
* @param array $keys eg. array($level,$app,$location)
|
|
* @return mixed data stored or NULL if not found in cache
|
|
*/
|
|
function get(array $keys)
|
|
{
|
|
if (!file_exists($fname = $this->filename($keys)))
|
|
{
|
|
return null;
|
|
}
|
|
if (file_exists($fname_expiration=$fname.self::EXPIRATION_EXTENSION) &&
|
|
($expiration = (int)file_get_contents($fname_expiration)) &&
|
|
filemtime($fname) < time()-$expiration)
|
|
{
|
|
unlink($fname);
|
|
unlink($fname_expiration);
|
|
return null;
|
|
}
|
|
return unserialize(file_get_contents($fname));
|
|
}
|
|
|
|
/**
|
|
* Delete some data from the cache
|
|
*
|
|
* @param array $keys eg. array($level,$app,$location)
|
|
* @return boolean true on success, false on error (eg. $key not set)
|
|
*/
|
|
function delete(array $keys)
|
|
{
|
|
if (!file_exists($fname = $this->filename($keys)))
|
|
{
|
|
//error_log(__METHOD__.'('.array2string($keys).") file_exists('$fname') == FALSE!");
|
|
return false;
|
|
}
|
|
if (file_exists($fname_expiration=$fname.self::EXPIRATION_EXTENSION))
|
|
{
|
|
unlink($fname_expiration);
|
|
}
|
|
//error_log(__METHOD__.'('.array2string($keys).") calling unlink('$fname')");
|
|
return unlink($fname);
|
|
}
|
|
|
|
/**
|
|
* Create a path from $keys and $basepath
|
|
*
|
|
* @param array $keys
|
|
* @param boolean $mkdir=false should we create the directory
|
|
* @return string
|
|
*/
|
|
function filename(array $keys,$mkdir=false)
|
|
{
|
|
$fname = $this->base_path.'/'.str_replace(array(':','*'),'-',implode('/',$keys));
|
|
|
|
if ($mkdir && !file_exists($dirname=dirname($fname)))
|
|
{
|
|
@mkdir($dirname,0700,true);
|
|
}
|
|
return $fname;
|
|
}
|
|
}
|