def create_segment(self, context, segment):
"""Create a segment."""
segment = segment['segment']
segment_id = segment.get('id') or uuidutils.generate_uuid()
with context.session.begin(subtransactions=True):
network_id = segment['network_id']
# FIXME couldn't use constants because of a circular import problem
physical_network = segment['physical_network']
if physical_network == constants.ATTR_NOT_SPECIFIED:
physical_network = None
network_type = segment['network_type']
segmentation_id = segment['segmentation_id']
if segmentation_id == constants.ATTR_NOT_SPECIFIED:
segmentation_id = None
args = {
'id': segment_id,
'network_id': network_id,
db.PHYSICAL_NETWORK: physical_network,
db.NETWORK_TYPE: network_type,
db.SEGMENTATION_ID: segmentation_id
}
new_segment = db.NetworkSegment(**args)
context.session.add(new_segment)
return self._make_segment_dict(new_segment)
def create_segment(self, context, segment):
"""Create a segment."""
segment = segment['segment']
segment_id = segment.get('id') or uuidutils.generate_uuid()
with context.session.begin(subtransactions=True):
network_id = segment['network_id']
physical_network = segment[extension.PHYSICAL_NETWORK]
if physical_network == constants.ATTR_NOT_SPECIFIED:
physical_network = None
network_type = segment[extension.NETWORK_TYPE]
segmentation_id = segment[extension.SEGMENTATION_ID]
if segmentation_id == constants.ATTR_NOT_SPECIFIED:
segmentation_id = None
args = {'id': segment_id,
'network_id': network_id,
db.PHYSICAL_NETWORK: physical_network,
db.NETWORK_TYPE: network_type,
db.SEGMENTATION_ID: segmentation_id}
new_segment = db.NetworkSegment(**args)
try:
context.session.add(new_segment)
context.session.flush([new_segment])
except db_exc.DBReferenceError:
raise n_exc.NetworkNotFound(net_id=network_id)
registry.notify(resources.SEGMENT, events.PRECOMMIT_CREATE, self,
context=context, segment=new_segment)
return self._make_segment_dict(new_segment)
def _create_segment_db(self, context, segment_id, segment):
with context.session.begin(subtransactions=True):
network_id = segment['network_id']
physical_network = segment[extension.PHYSICAL_NETWORK]
if physical_network == constants.ATTR_NOT_SPECIFIED:
physical_network = None
network_type = segment[extension.NETWORK_TYPE]
segmentation_id = segment[extension.SEGMENTATION_ID]
if segmentation_id == constants.ATTR_NOT_SPECIFIED:
segmentation_id = None
name = segment['name']
if name == constants.ATTR_NOT_SPECIFIED:
name = None
description = segment['description']
if description == constants.ATTR_NOT_SPECIFIED:
description = None
args = {
'id': segment_id,
'network_id': network_id,
'name': name,
'description': description,
db.PHYSICAL_NETWORK: physical_network,
db.NETWORK_TYPE: network_type,
db.SEGMENTATION_ID: segmentation_id
}
# Calculate the index of segment
segment_index = 0
segments = self.get_segments(context,
filters={'network_id': [network_id]},
fields=['segment_index'],
sorts=[('segment_index', True)])
if segments:
# NOTE(xiaohhui): The new index is the last index + 1, this
# may casue discontinuous segment_index. But segment_index
# can functionally work as the order index for segments.
segment_index = (segments[-1].get('segment_index') + 1)
args['segment_index'] = segment_index
new_segment = db.NetworkSegment(**args)
context.session.add(new_segment)
# Do some preliminary operations before commiting the segment to db
registry.notify(resources.SEGMENT,
events.PRECOMMIT_CREATE,
self,
context=context,
segment=new_segment)
return new_segment