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# 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
from neutron_lib.agent import extension
class L3AgentExtension(extension.AgentExtension, metaclass=abc.ABCMeta):
"""Define stable abstract interface for l3 agent extensions.
An agent extension extends the agent core functionality.
"""
@abc.abstractmethod
def add_router(self, context, data):
"""Handle a router add event.
Called on router create.
:param context: RPC context.
:param data: Router data.
"""
@abc.abstractmethod
def update_router(self, context, data):
"""Handle a router update event.
Called on router update.
:param context: RPC context.
:param data: Router data.
"""
@abc.abstractmethod
def delete_router(self, context, data):
"""Handle a router delete event.
:param context: RPC context.
:param data: Router data.
"""
@abc.abstractmethod
def ha_state_change(self, context, data):
"""Change router state from agent extension.
Called on HA router state change.
:param context: rpc context
:param data: dict of router_id and new state
"""
@abc.abstractmethod
def update_network(self, context, data):
"""Handle a network update event.
Called on network update.
:param context: RPC context.
:param data: dict of network data.
"""
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