/**
* Garbage collector
*
* @param int $lifeTime Session maximal lifetime
* @see session.gc_divisor 100
* @see session.gc_maxlifetime 1440
* @see session.gc_probability 1
* @usage Execution rate 1/100 (session.gc_probability/session.gc_divisor)
* @return boolean
*/
public function gc($lifeTime)
{
if ($this->_storageType == self::STORAGE_TYPE_TABLE) {
// In table storage
try {
$result = $this->_storage->retrieveEntities($this->_sessionContainer, 'PartitionKey eq \'' . $this->_sessionContainerPartition . '\' and sessionExpires lt ' . (time() - $lifeTime));
foreach ($result as $sessionRecord) {
$this->_storage->deleteEntity($this->_sessionContainer, $sessionRecord);
}
return true;
} catch (Microsoft_WindowsAzure_exception $ex) {
return false;
}
} else {
if ($this->_storageType == self::STORAGE_TYPE_BLOB) {
// In blob storage
try {
$result = $this->_storage->listBlobs($this->_sessionContainer, $this->_sessionContainerPartition, '', null, null, 'metadata');
foreach ($result as $sessionRecord) {
if ($sessionRecord->Metadata['sessionexpires'] < time() - $lifeTime) {
$this->_storage->deleteBlob($this->_sessionContainer, $sessionRecord->Name);
}
}
return true;
} catch (Microsoft_WindowsAzure_exception $ex) {
return false;
}
}
}
}