from descriptor_topics import VnfdTopic, NsdTopic, PduTopic, NstTopic
from instance_topics import NsrTopic, VnfrTopic, NsLcmOpTopic, NsiTopic, NsiLcmOpTopic
from base64 import b64encode
from descriptor_topics import VnfdTopic, NsdTopic, PduTopic, NstTopic
from instance_topics import NsrTopic, VnfrTopic, NsLcmOpTopic, NsiTopic, NsiLcmOpTopic
from base64 import b64encode