56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
# 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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from neutron_lib.agent import extension
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@six.add_metaclass(abc.ABCMeta)
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class L2AgentExtension(extension.AgentExtension):
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"""Define stable abstract interface for l2 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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"""Initialize agent extension.
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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: 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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"""
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@abc.abstractmethod
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def handle_port(self, context, data):
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"""Handle a port add/update event.
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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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"""Handle a port delete event.
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:param context: RPC context.
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:param data: Port data.
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"""
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