OpenStack Study: external_net.py

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# 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.

from neutron.api import extensions

from neutron.api.v2 import attributes as attr

from neutron.common import exceptions as qexception

from neutron.extensions import l3

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class ExternalNetworkInUse(qexception.InUse):

message = _("External network %(net_id)s cannot be updated to be made "

"non-external, since it has existing gateway ports")

# For backward compatibility the 'router' prefix is kept.

EXTERNAL = 'router:external'

EXTENDED_ATTRIBUTES_2_0 = {

'networks': {EXTERNAL: {'allow_post': True,

'allow_put': True,

'

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class External_net(extensions.ExtensionDescriptor):

@classmethod

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    def get_name(cls):

        return "Neutron external network"

    @classmethod

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    def get_alias(cls):

        return "external-net"

    @classmethod

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    def get_description(cls):

        return _("Adds external network attribute to network resource.")

    @classmethod

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    def get_namespace(cls):

        return "http://docs.openstack.org/ext/neutron/external_net/api/v1.0"

    @classmethod

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    def get_updated(cls):

        return "2013-01-14T10:00:00-00:00"

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    def get_extended_resources(self, version):

        if version == "2.0":

            return EXTENDED_ATTRIBUTES_2_0

        else:

            return {}

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    def get_alias_namespace_compatibility_map(self):

        return {l3.L3.get_alias(): l3.L3.get_namespace()}