Dominique.Fournier/DomFramework
1
0
Fork 0
Code Issues Pull Requests Projects Releases Activity

cachefile : update presentation and getter/setter

Browse Source 
git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@5806 bf3deb0d-5f1a-0410-827f-c0cc1f45334c
This commit is contained in:
Dominique Fournier
2019-12-08 19:12:10 +00:00
parent 82788b91d1
commit cb492c33bf
1 changed files with 80 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

118
cachefile.php
View File

@@ -1,26 +1,49 @@
<?php
/** DomFramework
@package domframework
@author Dominique Fournier <dominique@fournier38.fr> */
* @package domframework
* @author Dominique Fournier <dominique@fournier38.fr>
*/
/** A cache manager in file */
/** A cache manager in file
*/
class cachefile
{
/** Where to store the cached information */
/** Where to store the cached information
*/
public $directory = "./cache";
/** If TRUE : no information is cached */
/** If TRUE : no information is cached
*/
public $nocache = false;
/** Check if there is some garbage to clean */
/** Getter/setter for $directory cache
* @param string|null $val The directory to use
* @return $this or $this->directory value
*/
public function directory ($val = null)
// {{{
{
if ($val === null)
return $this->directory;
if (! is_string ($val) || trim ($val) === "")
throw new \Exception ("CacheFile directory not a string or empty", 500);
$this->directory = $val;
return $this;
}
// }}}
/** Check if there is some garbage to clean
*/
public function garbage ()
// {{{
{
try
{
$this->cachedir ();
}
catch (Exception $e)
catch (\Exception $e)
{
throw new Exception ($e->getMessage(), $e->getCode());
throw new \Exception ($e->getMessage(), $e->getCode());
}
$fileCache = $this->directory."/".sha1 ("Garbage-Lock");
@@ -37,9 +60,9 @@ class cachefile
if ($res === false)
{
$data = array ("ttl"=>24*60*60,
"createTime"=>time(),
"data"=>"CACHE-Garbage");
$data = array ("ttl" => 24*60*60,
"createTime" => time(),
"data" => "CACHE-Garbage");
file_put_contents ($fileCache, serialize ($data));
chmod ($fileCache, 0666);
$files = glob ($this->directory."/*", GLOB_NOSORT);
@@ -67,80 +90,95 @@ class cachefile
}
}
}
// }}}
/** This function check if the cachedir exists and create it if it is not the
case.
Check if the cache dir is writable and readable */
* case.
* Check if the cache dir is writable and readable
* @return true if OK
* @throw Exception if an error occured
*/
public function cachedir ()
// {{{
{
if (! isset ($this->directory) || $this->directory === "")
throw new Exception (dgettext ("domframework",
throw new \Exception (dgettext ("domframework",
"No cache directory defined"), 500);
if (! file_exists ($this->directory))
{
// Need to create the cache dir
$parent = realpath (dirname ($this->directory));
if (! is_writeable (dirname ($this->directory)))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"Directory %s is not writable : can not create cache directory"),
$parent), 500);
if (!mkdir ($this->directory))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"Can not create cache directory %s"),
$this->directory), 500);
chmod ($this->directory, 0777);
}
if (! is_writable ($this->directory))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"Cache directory %s is not writable"),
$this->directory), 500);
if (! is_readable ($this->directory))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"Cache directory %s is not readable"),
$this->directory), 500);
if (!file_exists ($this->directory."/.htaccess"))
file_put_contents ($this->directory."/.htaccess", "deny from all\n");
return true;
}
// }}}
/** This function write data in cache
The cache system can not save FALSE value
@param string $id Cache identifier (add the authentication, the METHOD...)
@param string $data The data to save
@param integer|null $ttl The cache Time to Leave in seconds (3600s by
default)*/
* @param string $id Cache identifier (add the authentication, the METHOD...)
* @param mixed $data The data to save
* @param integer|null $ttl The cache Time to Leave in seconds (3600s by
* default)
* @return true
* @throw if an error occured
*/
public function write ($id, $data, $ttl = 3600)
// {{{
{
if ($this->nocache !== false)
return false;
if ($data === false)
throw new Exception (dgettext ("domframework",
"Can not store FALSE in cache"), 500);
try
{
$this->cachedir ();
}
catch (Exception $e)
catch (\Exception $e)
{
throw new Exception ($e->getMessage(), $e->getCode());
throw new \Exception ($e->getMessage(), $e->getCode());
}
if (! is_integer ($ttl) || $ttl <= 0)
throw new \Exception ("CacheFile TTL invalid : not integer or negative".
" : '$ttl'",
500);
$this->garbage ();
$fileCache = $this->directory."/".sha1 ($id);
touch ($fileCache.".lock");
$data = array ("ttl"=>$ttl,
"createTime"=>time(),
"data"=>$data);
$data = array ("ttl" => $ttl,
"createTime" => time(),
"data" => $data);
file_put_contents ($fileCache, serialize ($data));
unlink ($fileCache.".lock");
chmod ($fileCache, 0666);
return true;
}
// }}}
/** This function read data from cache. Return FALSE in case of empty or too
older cache
@param string $id Cache identifier (add the authentication, the METHOD) */
* older cache
* @param string $id Cache identifier (add the authentication, the METHOD)
* @return false if the cache is empty or too old
* @return mixed The data stored in cache
*/
public function read ($id)
// {{{
{
if ($this->nocache !== false)
return false;
@@ -148,9 +186,9 @@ class cachefile
{
$this->cachedir ();
}
catch (Exception $e)
catch (\Exception $e)
{
throw new Exception ($e->getMessage(), $e->getCode());
throw new \Exception ($e->getMessage(), $e->getCode());
}
$this->garbage ();
@@ -158,11 +196,11 @@ class cachefile
if (!file_exists ($fileCache))
return false;
if (!is_readable ($fileCache))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"File cache %s is not readable"),
$fileCache), 500);
if (!is_writable ($fileCache))
throw new Exception (sprintf (dgettext ("domframework",
throw new \Exception (sprintf (dgettext ("domframework",
"File cache %s is not writable"),
$fileCache), 500);
// Lock : waiting the reconstruction of the cache by another process
@@ -202,11 +240,14 @@ class cachefile
return false;
}
// }}}
/** This function delete an id in cache
@param string $id Cache identifier (add the authentication, the METHOD...)
* @param string $id Cache identifier (add the authentication, the METHOD...)
* @return boolean The cache is well deleted
*/
public function delete ($id)
// {{{
{
$fileCache = $this->directory."/".sha1 ($id);
if (!file_exists ($fileCache))
@@ -214,4 +255,5 @@ class cachefile
unlink ($fileCache);
return true;
}
// }}}
}