85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
# Copyright 2023 SysEleven GmbH
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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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from neutron.plugins.ml2.drivers.ovn.agent import neutron_agent
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from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovsdb_monitor
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from neutron_lib.plugins import constants as plugin_constants
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from neutron_lib.plugins import directory
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from neutron_vpnaas.services.vpn.common import constants
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class OVNVPNAgent(neutron_agent.NeutronAgent):
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agent_type = constants.AGENT_TYPE_VPN
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binary = "neutron-ovn-vpn-agent"
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@property
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def nb_cfg(self):
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return int(self.chassis_private.external_ids.get(
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constants.OVN_AGENT_VPN_SB_CFG_KEY, 0))
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@staticmethod
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def id_from_chassis_private(chassis_private):
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return chassis_private.external_ids.get(
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constants.OVN_AGENT_VPN_ID_KEY)
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@property
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def agent_id(self):
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return self.id_from_chassis_private(self.chassis_private)
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@property
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def description(self):
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return self.chassis_private.external_ids.get(
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constants.OVN_AGENT_VPN_DESC_KEY, '')
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class ChassisVPNAgentWriteEvent(ovsdb_monitor.ChassisAgentEvent):
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events = (ovsdb_monitor.BaseEvent.ROW_CREATE,
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ovsdb_monitor.BaseEvent.ROW_UPDATE)
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@staticmethod
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def _vpnagent_nb_cfg(row):
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return int(
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row.external_ids.get(constants.OVN_AGENT_VPN_SB_CFG_KEY, -1))
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@staticmethod
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def agent_id(row):
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return row.external_ids.get(constants.OVN_AGENT_VPN_ID_KEY)
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def match_fn(self, event, row, old=None):
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if not self.agent_id(row):
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# Don't create a cached object with an agent_id of 'None'
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return False
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if event == self.ROW_CREATE:
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return True
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try:
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return self._vpnagent_nb_cfg(row) != self._vpnagent_nb_cfg(old)
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except (AttributeError, KeyError):
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return False
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def run(self, event, row, old):
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neutron_agent.AgentCache().update(constants.AGENT_TYPE_VPN, row,
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clear_down=True)
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class OVNVPNAgentMonitor(object):
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def watch_agent_events(self):
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l3_plugin = directory.get_plugin(plugin_constants.L3)
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sb_ovn = l3_plugin._sb_ovn
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if sb_ovn:
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idl = sb_ovn.ovsdb_connection.idl
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if isinstance(idl, ovsdb_monitor.OvnSbIdl):
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idl.notify_handler.watch_event(
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ChassisVPNAgentWriteEvent(idl.driver))
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