vmware-nsx/neutron/extensions/multiprovidernet.py
Aaron Rosen d16e185d34 Add multiple provider network extension
The following commit adds the ability to associate multiple
different provider networks on a single network.

Implements blueprint map-networks-to-multiple-provider-networks

Change-Id: I3c70fb2426899f728a401566debab7f66e7246bc
2013-08-20 10:30:08 -07:00

117 lines
4.0 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2013 OpenStack Foundation.
# All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import webob.exc
from neutron.api import extensions
from neutron.api.v2 import attributes as attr
from neutron.common import exceptions as qexception
from neutron.extensions import providernet as pnet
SEGMENTS = 'segments'
class SegmentsSetInConjunctionWithProviders(qexception.InvalidInput):
message = _("Segments and provider values cannot both be set.")
class SegmentsContainDuplicateEntry(qexception.InvalidInput):
message = _("Duplicate segment entry in request.")
def _convert_and_validate_segments(segments, valid_values=None):
unique = set()
for segment in segments:
unique.add(tuple(segment.iteritems()))
network_type = segment.get(pnet.NETWORK_TYPE,
attr.ATTR_NOT_SPECIFIED)
segment[pnet.NETWORK_TYPE] = network_type
physical_network = segment.get(pnet.PHYSICAL_NETWORK,
attr.ATTR_NOT_SPECIFIED)
segment[pnet.PHYSICAL_NETWORK] = physical_network
segmentation_id = segment.get(pnet.SEGMENTATION_ID)
if segmentation_id:
segment[pnet.SEGMENTATION_ID] = attr.convert_to_int(
segmentation_id)
else:
segment[pnet.SEGMENTATION_ID] = attr.ATTR_NOT_SPECIFIED
if len(segment.keys()) != 3:
msg = (_("Unrecognized attribute(s) '%s'") %
', '.join(set(segment.keys()) -
set([pnet.NETWORK_TYPE, pnet.PHYSICAL_NETWORK,
pnet.SEGMENTATION_ID])))
raise webob.exc.HTTPBadRequest(msg)
if len(unique) != len(segments):
raise SegmentsContainDuplicateEntry()
attr.validators['type:convert_segments'] = (
_convert_and_validate_segments)
EXTENDED_ATTRIBUTES_2_0 = {
'networks': {
SEGMENTS: {'allow_post': True, 'allow_put': True,
'validate': {'type:convert_segments': None},
'convert_list_to': attr.convert_kvp_list_to_dict,
'default': attr.ATTR_NOT_SPECIFIED,
'enforce_policy': True,
'is_visible': True},
}
}
class Multiprovidernet(extensions.ExtensionDescriptor):
"""Extension class supporting multiple provider networks.
This class is used by neutron's extension framework to make
metadata about the multiple provider network extension available to
clients. No new resources are defined by this extension. Instead,
the existing network resource's request and response messages are
extended with attributes in the provider namespace.
With admin rights, network dictionaries returned will also include
provider attributes.
"""
@classmethod
def get_name(cls):
return "Multi Provider Network"
@classmethod
def get_alias(cls):
return "multi-provider"
@classmethod
def get_description(cls):
return ("Expose mapping of virtual networks to multiple physical "
"networks")
@classmethod
def get_namespace(cls):
return "http://docs.openstack.org/ext/multi-provider/api/v1.0"
@classmethod
def get_updated(cls):
return "2013-06-27T10:00:00-00:00"
def get_extended_resources(self, version):
if version == "2.0":
return EXTENDED_ATTRIBUTES_2_0
else:
return {}