OpenStack Study: support_base.py

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

# Copyright 2013 Embrane, 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: Ivar Lazzaro, Embrane, Inc.

import abc

import six

@six.add_metaclass(abc.ABCMeta)

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class SupportBase(object):

"""abstract support class.

Defines the methods a plugin support should implement to be used as

the L2 base for Embrane plugin.

"""

@abc.abstractmethod

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    def __init__(self):

        pass

    @abc.abstractmethod

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    def retrieve_utif_info(self, context, neutron_port=None, network=None):

        """Retrieve specific network info.

        each plugin support, querying its own DB, can collect all the

        information needed by the ESM in order to create the

        user traffic security zone.

        :param interface_info: the foo parameter

        :param context: neutron request context

        :returns: heleosapi.info.UtifInfo -- specific network info

        :raises: UtifInfoError

        """