neutron/neutron/db/l3_rpc_base.py
Bob Melander 715b16aca7 Adds support for L3 routing/NAT as a service plugin
- Adds L3 routing/NAT service plugin
- Removes L3 routing/NAT from ML2 plugin
- Moves "router:external" attribute to new extension "External-net"
- Introduces separate RPC topic for L3 callbacks from L3 agent

Implements: blueprint quantum-l3-routing-plugin

Change-Id: Id9af10c2910f9a1730b163203a68d101ffc3b282
2013-09-11 12:12:10 +02:00

97 lines
4.0 KiB
Python

# Copyright (c) 2012 OpenStack Foundation.
#
# 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.
from oslo.config import cfg
from neutron.common import constants
from neutron.common import utils
from neutron import context as neutron_context
from neutron.extensions import portbindings
from neutron import manager
from neutron.openstack.common import jsonutils
from neutron.openstack.common import log as logging
from neutron.plugins.common import constants as plugin_constants
LOG = logging.getLogger(__name__)
class L3RpcCallbackMixin(object):
"""A mix-in that enable L3 agent rpc support in plugin implementations."""
def sync_routers(self, context, **kwargs):
"""Sync routers according to filters to a specific agent.
@param context: contain user information
@param kwargs: host, router_ids
@return: a list of routers
with their interfaces and floating_ips
"""
router_ids = kwargs.get('router_ids')
host = kwargs.get('host')
context = neutron_context.get_admin_context()
l3plugin = manager.NeutronManager.get_service_plugins()[
plugin_constants.L3_ROUTER_NAT]
if not l3plugin:
routers = {}
LOG.error(_('No plugin for L3 routing registered! Will reply '
'to l3 agent with empty router dictionary.'))
elif utils.is_extension_supported(
l3plugin, constants.L3_AGENT_SCHEDULER_EXT_ALIAS):
if cfg.CONF.router_auto_schedule:
l3plugin.auto_schedule_routers(context, host, router_ids)
routers = l3plugin.list_active_sync_routers_on_active_l3_agent(
context, host, router_ids)
else:
routers = l3plugin.get_sync_data(context, router_ids)
plugin = manager.NeutronManager.get_plugin()
if utils.is_extension_supported(
plugin, constants.PORT_BINDING_EXT_ALIAS):
self._ensure_host_set_on_ports(context, plugin, host, routers)
LOG.debug(_("Routers returned to l3 agent:\n %s"),
jsonutils.dumps(routers, indent=5))
return routers
def _ensure_host_set_on_ports(self, context, plugin, host, routers):
for router in routers:
LOG.debug(_("Checking router: %(id)s for host: %(host)s"),
{'id': router['id'], 'host': host})
self._ensure_host_set_on_port(context, plugin, host,
router.get('gw_port'))
for interface in router.get(constants.INTERFACE_KEY, []):
self._ensure_host_set_on_port(context, plugin, host,
interface)
def _ensure_host_set_on_port(self, context, plugin, host, port):
if (port and
(port.get(portbindings.HOST_ID) != host or
port.get(portbindings.VIF_TYPE) ==
portbindings.VIF_TYPE_BINDING_FAILED)):
plugin.update_port(context, port['id'],
{'port': {portbindings.HOST_ID: host}})
def get_external_network_id(self, context, **kwargs):
"""Get one external network id for l3 agent.
l3 agent expects only on external network when it performs
this query.
"""
context = neutron_context.get_admin_context()
plugin = manager.NeutronManager.get_plugin()
net_id = plugin.get_external_network_id(context)
LOG.debug(_("External network ID returned to l3 agent: %s"),
net_id)
return net_id