public function calculateId()
{
$dc = kDataCenterMgr::getCurrentDc();
for ($i = 0; $i < 10; $i++) {
$id = $dc["id"] . '_' . md5(microtime(true) . getmypid() . uniqid(rand(), true));
$existingObject = UploadTokenPeer::retrieveByPKNoFilter($id);
if (!$existingObject) {
return $id;
}
}
throw new Exception("Could not calculate unique id for upload token");
}