OpenStack Study: extendedattribute.py

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# vim: tabstop=4 shiftwidth=4 softtabstop=4

#

# 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.

#

# @author: Kaiwei Fan, VMware, Inc

from neutron.api import extensions

EXTENDED_ATTRIBUTE = 'extended_attribute'

EXTENDED_ATTRIBUTES_2_0 = {

'ext_test_resources': {

EXTENDED_ATTRIBUTE: {'allow_post': True, 'allow_put': False,

'validate': {'type:uuid_or_none': None},

'default': None, 'is_visible': True},

}

}

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class Extendedattribute(extensions.ExtensionDescriptor):

"""Extension class supporting extended attribute for router."""

@classmethod

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    def get_name(cls):

        return "Extended Extension Attributes"

    @classmethod

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    def get_alias(cls):

        return "extended-ext-attr"

    @classmethod

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    def get_description(cls):

        return "Provides extended_attr attribute to router"

    @classmethod

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    def get_namespace(cls):

        return ""

    @classmethod

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    def get_updated(cls):

        return "2013-02-05T00:00:00-00:00"

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    def get_extended_resources(self, version):

        if version == "2.0":

            return EXTENDED_ATTRIBUTES_2_0

        else:

            return {}