69 lines
2.6 KiB
Python
69 lines
2.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2013 Nicira Networks, 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.
|
|
#
|
|
# @author: Salvatore Orlando, Nicira, Inc
|
|
#
|
|
|
|
import sqlalchemy as sa
|
|
|
|
from neutron.db import l3_db
|
|
from neutron.extensions import l3
|
|
from neutron.openstack.common import log as logging
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
EXTERNAL_GW_INFO = l3.EXTERNAL_GW_INFO
|
|
|
|
# Modify the Router Data Model adding the enable_snat attribute
|
|
setattr(l3_db.Router, 'enable_snat',
|
|
sa.Column(sa.Boolean, default=True, nullable=False))
|
|
|
|
|
|
class L3_NAT_db_mixin(l3_db.L3_NAT_db_mixin):
|
|
"""Mixin class to add configurable gateway modes."""
|
|
|
|
def _make_router_dict(self, router, fields=None):
|
|
res = super(L3_NAT_db_mixin, self)._make_router_dict(router)
|
|
if router['gw_port_id']:
|
|
nw_id = router.gw_port['network_id']
|
|
res[EXTERNAL_GW_INFO] = {'network_id': nw_id,
|
|
'enable_snat': router.enable_snat}
|
|
return self._fields(res, fields)
|
|
|
|
def _update_router_gw_info(self, context, router_id, info):
|
|
router = self._get_router(context, router_id)
|
|
# if enable_snat is not specified use the value
|
|
# stored in the database (default:True)
|
|
enable_snat = not info or info.get('enable_snat', router.enable_snat)
|
|
with context.session.begin(subtransactions=True):
|
|
router.enable_snat = enable_snat
|
|
|
|
# Calls superclass, pass router db object for avoiding re-loading
|
|
super(L3_NAT_db_mixin, self)._update_router_gw_info(
|
|
context, router_id, info, router=router)
|
|
|
|
def _build_routers_list(self, routers, gw_ports):
|
|
gw_port_id_gw_port_dict = {}
|
|
for gw_port in gw_ports:
|
|
gw_port_id_gw_port_dict[gw_port['id']] = gw_port
|
|
for rtr in routers:
|
|
gw_port_id = rtr['gw_port_id']
|
|
if gw_port_id:
|
|
rtr['gw_port'] = gw_port_id_gw_port_dict[gw_port_id]
|
|
# Add enable_snat key
|
|
rtr['enable_snat'] = rtr[EXTERNAL_GW_INFO]['enable_snat']
|
|
return routers
|