/**
* Force cache cleanup
*
* Force a check, if the cache currently exceeds its given size limit. If
* this is the case this method will start cleaning up the cache.
*
* Depending on the used meta data storage and the size of the cache this
* operation might take some time.
*
* @return void
*/
public static function forceCleanup()
{
if (self::$path === null) {
throw new vcsCacheNotInitializedException();
}
self::$metaDataHandler->cleanup(self::$size, self::$cleanupRate);
}
/**
* Construct cache from cache storage root
*
* @param string $root
* @return void
*/
public function __construct($root)
{
parent::__construct($root);
// Check for existance of meta data storage file
if (!file_exists($storage = $this->root . '/cacheSize')) {
file_put_contents($storage, '0');
}
$this->storage = $storage;
}
/**
* Construct cache from cache storage root
*
* @param string $root
* @return void
*/
public function __construct($root)
{
parent::__construct($root);
// Check for existance of meta data storage file
if (!file_exists($dbFile = $this->root . '/metadata.db')) {
// Create cache directory, if not yet existing
if (!is_dir($this->root)) {
mkdir($this->root, 0750, true);
}
// Create the table with appropriate indexes, if the table does not
// yet exist
$db = new SQLite3($dbFile);
$db->query('CREATE TABLE metadata (
path TEXT PRIMARY KEY,
size NUMERIC,
accessed NUMERIC
)');
$db->query('CREATE INDEX size ON metadata ( size )');
$db->query('CREATE INDEX accessed ON metadata ( accessed )');
}
$this->db = new SQLite3($dbFile);
}
