# Copyright (C) 2009-2012 Nicira Networks, 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 abc import ABCMeta
from abc import abstractmethod
from abc import abstractproperty


class NvpApiRequest:
    '''An abstract baseclass for all ApiRequest implementations.

    This defines the interface and property structure for both eventlet and
    gevent-based ApiRequest classes.
    '''

    __metaclass__ = ABCMeta

    @abstractmethod
    def start(self):
        pass

    @abstractmethod
    def join(self):
        pass

    @abstractmethod
    def copy(self):
        pass

    @abstractproperty
    def request_error(self):
        pass
