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