52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
# Copyright (c) 2018 OpenStack Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import abc
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import six
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@six.add_metaclass(abc.ABCMeta)
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class DfSwitchDriver(object):
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def __init__(self, nb_api):
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super(DfSwitchDriver, self).__init__()
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self.db_change_callback = None
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self.nb_api = nb_api
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def initialize(self, db_change_callback):
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self.db_change_callback = db_change_callback
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@abc.abstractmethod
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def start(self):
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"""Start running the switch backend"""
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@abc.abstractmethod
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def stop(self):
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"""Stop the switch backend"""
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@abc.abstractmethod
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def switch_sync_started(self):
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"""Callback on switch sync start"""
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@abc.abstractmethod
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def switch_sync_finished(self):
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"""Callback on switch sync done"""
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def sync_ignore_models(self):
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"""Which models to ignore on sync
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:returns list of model names
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"""
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return []
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