def initiate_ingest(dpn_object_id, size):
"""
Initiates an ingest operation by minting the correlation ID
:param dpn_object_id: UUID of the DPN object to send to the federation (extracted from bag filename)
:param size: Integer of the bag size
:return: Correlation ID to be used by choose_and_send_location linked task.
"""
# NOTE: Before sending the request, when this is real, it should...
# 1. Stage or confirm presence of bag in the staging area.
# 2. Validate the bag before sending.
action = IngestAction(
correlation_id=str(uuid4()),
object_id=dpn_object_id,
state=STARTED
)
headers = {
"correlation_id": action.correlation_id,
"date": dpn_strftime(datetime.now()),
"ttl": str_expire_on(datetime.now()),
"sequence": 0
}
body = {
"replication_size": size,
"protocol": settings.DPN_XFER_OPTIONS,
"dpn_object_id": dpn_object_id
}
sequence_info = store_sequence(headers['correlation_id'],
settings.DPN_NODE_NAME,
headers['sequence'])
validate_sequence(sequence_info)
try:
msg = ReplicationInitQuery(headers, body)
msg.send(settings.DPN_BROADCAST_KEY)
action.state = SUCCESS
except Exception as err:
action.state = FAILED
action.note = "%s" % err
logger.error(err)
action.save()
return action.correlation_id
def handle(self, *args, **options):
msg = ReplicationInitQuery()
headers = {
'correlation_id': uuid(),
'sequence': 0,
'date': dpn_strftime(datetime.now())
}
msg.set_headers(**headers)
body = {
'message_name': 'replication-init-query',
'replication_size': 4502,
'protocol': ['https', 'rsync'],
'dpn_object_id': uuid()
}
msg.set_body(**body)
msg.send(DPN_BROADCAST_KEY)
