OpenStack Networking (Neutron)
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# Copyright 2013, Nachi Ueno, NTT I3, Inc.
# All Rights Reserved.
#
# 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
import six
from neutron.common import rpc as n_rpc
from neutron.db.vpn import vpn_validator
from neutron import manager
from neutron.openstack.common import log as logging
from neutron.plugins.common import constants
LOG = logging.getLogger(__name__)
@six.add_metaclass(abc.ABCMeta)
class VpnDriver(object):
def __init__(self, service_plugin, validator=None):
self.service_plugin = service_plugin
if validator is None:
validator = vpn_validator.VpnReferenceValidator()
self.validator = validator
@property
def service_type(self):
pass
@abc.abstractmethod
def create_vpnservice(self, context, vpnservice):
pass
@abc.abstractmethod
def update_vpnservice(
self, context, old_vpnservice, vpnservice):
pass
@abc.abstractmethod
def delete_vpnservice(self, context, vpnservice):
pass
class BaseIPsecVpnAgentApi(n_rpc.RpcProxy):
"""Base class for IPSec API to agent."""
def __init__(self, to_agent_topic, topic, default_version):
self.to_agent_topic = to_agent_topic
super(BaseIPsecVpnAgentApi, self).__init__(topic, default_version)
def _agent_notification(self, context, method, router_id,
version=None, **kwargs):
"""Notify update for the agent.
This method will find where is the router, and
dispatch notification for the agent.
"""
admin_context = context.is_admin and context or context.elevated()
plugin = manager.NeutronManager.get_service_plugins().get(
constants.L3_ROUTER_NAT)
if not version:
version = self.RPC_API_VERSION
l3_agents = plugin.get_l3_agents_hosting_routers(
admin_context, [router_id],
admin_state_up=True,
active=True)
for l3_agent in l3_agents:
LOG.debug(_('Notify agent at %(topic)s.%(host)s the message '
'%(method)s %(args)s'),
{'topic': self.to_agent_topic,
'host': l3_agent.host,
'method': method,
'args': kwargs})
self.cast(
context, self.make_msg(method, **kwargs),
version=version,
topic='%s.%s' % (self.to_agent_topic, l3_agent.host))
def vpnservice_updated(self, context, router_id, **kwargs):
"""Send update event of vpnservices."""
self._agent_notification(context, 'vpnservice_updated', router_id,
**kwargs)