OpenStack Study: l3_ext_gw_mode.py

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# Copyright 2013 VMware, Inc.

# 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 attrs

from neutron.extensions import l3

EXTENDED_ATTRIBUTES_2_0 = {

'routers': {l3.EXTERNAL_GW_INFO:

{'allow_post': True,

'allow_put': True,

'is_visible': True,

'default': None,

'enforce_policy': True,

'validate':

{'type:dict_or_nodata':

{'network_id': {'type:uuid': None, 'required': True},

'enable_snat': {'type:boolean': None, 'required': False,

'convert_to': attrs.convert_to_boolean}}

}}}}

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class L3_ext_gw_mode(extensions.ExtensionDescriptor):

@classmethod

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    def get_name(cls):

        return "Neutron L3 Configurable external gateway mode"

    @classmethod

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    def get_alias(cls):

        return "ext-gw-mode"

    @classmethod

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    def get_description(cls):

        return ("Extension of the router abstraction for specifying whether "

                "SNAT should occur on the external gateway")

    @classmethod

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    def get_namespace(cls):

        return "http://docs.openstack.org/ext/neutron/ext-gw-mode/api/v1.0"

    @classmethod

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    def get_updated(cls):

        return "2013-03-28T10:00:00-00:00"

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    def get_required_extensions(self):

        return ["router"]

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    def get_extended_resources(self, version):

        if version == "2.0":

            return dict(EXTENDED_ATTRIBUTES_2_0.items())

        else:

            return {}