/**
* Blocks asynchronous operation until it succeeds. Throws exception if the
* operation failed.
*
* @param string $requestInfo The asynchronous operation request AsynchronousOperationResult.
*
* @throws WindowsAzure\Common\ServiceException
*
* @return none
*/
private function _blockUntilAsyncFinish($requestInfo)
{
$status = null;
do {
sleep(5);
$result = $this->_proxy->getOperationStatus($requestInfo);
$status = $result->getStatus();
} while (OperationStatus::IN_PROGRESS == $status);
if (OperationStatus::SUCCEEDED != $status) {
throw $result->getError();
}
}
