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60 lines
2.0 KiB
60 lines
2.0 KiB
# Copyright (c) 2015 Mellanox Technologies, Ltd
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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 AgentCoreResourceExtension(object):
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"""Define stable abstract interface for agent extensions.
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An agent extension extends the agent core functionality.
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"""
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def initialize(self, connection, driver_type):
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"""Perform agent core resource extension initialization.
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:param connection: RPC connection that can be reused by the extension
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to define its RPC endpoints
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:param driver_type: a string that defines the agent type to the
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extension. Can be used to choose the right backend
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implementation.
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Called after all extensions have been loaded.
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No port handling will be called before this method.
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"""
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@abc.abstractmethod
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def handle_port(self, context, data):
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"""Handle agent extension for port.
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This can be called on either create or update, depending on the
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code flow. Thus, it's this function's responsibility to check what
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actually changed.
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:param context: rpc context
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:param data: port data
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"""
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@abc.abstractmethod
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def delete_port(self, context, data):
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"""Delete port from agent extension.
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:param context: rpc context
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:param data: port data
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"""
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