neutron/neutron/db/extraroute_db.py
Oleg Bondarev 2fb996642a ExtraRoute: fix _get_extra_routes_by_router_id()
router_id filter wasn't properly applied to the query
so the func returned all extra routes of all routers.

Closes-Bug: #1248219
Change-Id: I77733ee7994c8fccbbc966ccabd83b8fe4def8d5
2013-11-08 10:16:19 +04:00

179 lines
7.3 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2013, Nachi Ueno, NTT MCL, 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 netaddr
from oslo.config import cfg
import sqlalchemy as sa
from sqlalchemy import orm
from neutron.common import utils
from neutron.db import db_base_plugin_v2
from neutron.db import l3_db
from neutron.db import model_base
from neutron.db import models_v2
from neutron.extensions import extraroute
from neutron.extensions import l3
from neutron.openstack.common import log as logging
LOG = logging.getLogger(__name__)
extra_route_opts = [
#TODO(nati): use quota framework when it support quota for attributes
cfg.IntOpt('max_routes', default=30,
help=_("Maximum number of routes")),
]
cfg.CONF.register_opts(extra_route_opts)
class RouterRoute(model_base.BASEV2, models_v2.Route):
router_id = sa.Column(sa.String(36),
sa.ForeignKey('routers.id',
ondelete="CASCADE"),
primary_key=True)
router = orm.relationship(l3_db.Router,
backref=orm.backref("route_list",
lazy='joined',
cascade='delete'))
class ExtraRoute_db_mixin(l3_db.L3_NAT_db_mixin):
"""Mixin class to support extra route configuration on router."""
def _extend_router_dict_extraroute(self, router_res, router_db):
router_res['routes'] = (ExtraRoute_db_mixin.
_make_extra_route_list(
router_db['route_list']
))
db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs(
l3.ROUTERS, ['_extend_router_dict_extraroute'])
def update_router(self, context, id, router):
r = router['router']
with context.session.begin(subtransactions=True):
#check if route exists and have permission to access
router_db = self._get_router(context, id)
if 'routes' in r:
self._update_extra_routes(context, router_db, r['routes'])
routes = self._get_extra_routes_by_router_id(context, id)
router_updated = super(ExtraRoute_db_mixin, self).update_router(
context, id, router)
router_updated['routes'] = routes
return router_updated
def _get_subnets_by_cidr(self, context, cidr):
query_subnets = context.session.query(models_v2.Subnet)
return query_subnets.filter_by(cidr=cidr).all()
def _validate_routes_nexthop(self, context, ports, routes, nexthop):
#Note(nati): Nexthop should be connected,
# so we need to check
# nexthop belongs to one of cidrs of the router ports
cidrs = []
for port in ports:
cidrs += [self._core_plugin._get_subnet(context,
ip['subnet_id'])['cidr']
for ip in port['fixed_ips']]
if not netaddr.all_matching_cidrs(nexthop, cidrs):
raise extraroute.InvalidRoutes(
routes=routes,
reason=_('the nexthop is not connected with router'))
#Note(nati) nexthop should not be same as fixed_ips
for port in ports:
for ip in port['fixed_ips']:
if nexthop == ip['ip_address']:
raise extraroute.InvalidRoutes(
routes=routes,
reason=_('the nexthop is used by router'))
def _validate_routes(self, context,
router_id, routes):
if len(routes) > cfg.CONF.max_routes:
raise extraroute.RoutesExhausted(
router_id=router_id,
quota=cfg.CONF.max_routes)
filters = {'device_id': [router_id]}
ports = self._core_plugin.get_ports(context, filters)
for route in routes:
self._validate_routes_nexthop(
context, ports, routes, route['nexthop'])
def _update_extra_routes(self, context, router, routes):
self._validate_routes(context, router['id'],
routes)
old_routes = self._get_extra_routes_by_router_id(
context, router['id'])
added, removed = utils.diff_list_of_dict(old_routes,
routes)
LOG.debug(_('Added routes are %s'), added)
for route in added:
router_routes = RouterRoute(
router_id=router['id'],
destination=route['destination'],
nexthop=route['nexthop'])
context.session.add(router_routes)
LOG.debug(_('Removed routes are %s'), removed)
for route in removed:
del_context = context.session.query(RouterRoute)
del_context.filter_by(router_id=router['id'],
destination=route['destination'],
nexthop=route['nexthop']).delete()
@staticmethod
def _make_extra_route_list(extra_routes):
return [{'destination': route['destination'],
'nexthop': route['nexthop']}
for route in extra_routes]
def _get_extra_routes_by_router_id(self, context, id):
query = context.session.query(RouterRoute)
query = query.filter_by(router_id=id)
return self._make_extra_route_list(query)
def get_router(self, context, id, fields=None):
with context.session.begin(subtransactions=True):
router = super(ExtraRoute_db_mixin, self).get_router(
context, id, fields)
return router
def get_routers(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None,
page_reverse=False):
with context.session.begin(subtransactions=True):
routers = super(ExtraRoute_db_mixin, self).get_routers(
context, filters, fields, sorts=sorts, limit=limit,
marker=marker, page_reverse=page_reverse)
return routers
def _confirm_router_interface_not_in_use(self, context, router_id,
subnet_id):
super(ExtraRoute_db_mixin, self)._confirm_router_interface_not_in_use(
context, router_id, subnet_id)
subnet_db = self._core_plugin._get_subnet(context, subnet_id)
subnet_cidr = netaddr.IPNetwork(subnet_db['cidr'])
extra_routes = self._get_extra_routes_by_router_id(context, router_id)
for route in extra_routes:
if netaddr.all_matching_cidrs(route['nexthop'], [subnet_cidr]):
raise extraroute.RouterInterfaceInUseByRoute(
router_id=router_id, subnet_id=subnet_id)