# Copyright (c) 2015, MapR Technologies
#
# 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.


import abc

import six


@six.add_metaclass(abc.ABCMeta)
class AbstractNodeManager(object):
    @abc.abstractmethod
    def start(self, cluster_context, instances=None):
        pass

    @abc.abstractmethod
    def stop(self, cluster_context, instances=None):
        pass

    @abc.abstractmethod
    def move_nodes(self, cluster_context, instances):
        pass

    @abc.abstractmethod
    def remove_nodes(self, cluster_context, instances):
        pass
