82 lines
3.2 KiB
Python
82 lines
3.2 KiB
Python
# Copyright 2014 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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from neutron.callbacks import events
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from neutron.callbacks import registry
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from neutron.callbacks import resources
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from neutron.services import provider_configuration as provconfig
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from oslo_log import log as logging
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from oslo_utils import importutils
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from neutron_vpnaas.extensions import vpnaas
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LOG = logging.getLogger(__name__)
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DEVICE_DRIVERS = 'device_drivers'
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class VPNService(object):
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"""VPN Service observer."""
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def __init__(self, l3_agent):
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"""Creates a VPN Service instance with context."""
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# TODO(pc_m): Replace l3_agent argument with config, once none of the
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# device driver implementations need the L3 agent.
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self.conf = l3_agent.conf
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registry.subscribe(
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router_added_actions, resources.ROUTER, events.AFTER_CREATE)
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registry.subscribe(
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router_removed_actions, resources.ROUTER, events.AFTER_DELETE)
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registry.subscribe(
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router_updated_actions, resources.ROUTER, events.AFTER_UPDATE)
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def load_device_drivers(self, host):
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"""Loads one or more device drivers for VPNaaS."""
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drivers = []
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for device_driver in self.conf.vpnagent.vpn_device_driver:
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device_driver = provconfig.get_provider_driver_class(
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device_driver, DEVICE_DRIVERS)
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try:
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drivers.append(importutils.import_object(device_driver,
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self,
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host))
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LOG.debug('Loaded VPNaaS device driver: %s', device_driver)
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except ImportError:
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raise vpnaas.DeviceDriverImportError(
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device_driver=device_driver)
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return drivers
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def router_added_actions(resource, event, l3_agent, **kwargs):
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"""Create the router and sync for each loaded device driver."""
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router = kwargs['router']
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for device_driver in l3_agent.device_drivers:
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device_driver.create_router(router)
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device_driver.sync(l3_agent.context, [router.router])
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def router_removed_actions(resource, event, l3_agent, **kwargs):
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"""Remove the router from each loaded device driver."""
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router = kwargs['router']
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for device_driver in l3_agent.device_drivers:
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device_driver.destroy_router(router.router_id)
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def router_updated_actions(resource, event, l3_agent, **kwargs):
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"""Perform a sync on each loaded device driver."""
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router = kwargs['router']
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for device_driver in l3_agent.device_drivers:
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device_driver.sync(l3_agent.context, [router.router])
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