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# (c) Copyright 2019 SUSE LLC
#
# 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 contextlib
import netaddr
from neutron_lib.db import api as db_api
from neutron_lib import exceptions as exc
from oslo_utils import uuidutils
import webob.exc
from neutron.objects import subnetpool as subnetpool_obj
from neutron.tests.unit.plugins.ml2 import test_plugin
_uuid = uuidutils.generate_uuid
class SubnetpoolPrefixOpsTestBase(object):
@contextlib.contextmanager
def address_scope(self, ip_version, prefixes=None, shared=False,
admin=True, name='test-scope', is_default_pool=False,
project_id=None, **kwargs):
tenant_id = project_id if project_id else kwargs.get(
'tenant_id', None)
if not tenant_id:
tenant_id = self._tenant_id
scope_data = {'tenant_id': tenant_id, 'ip_version': ip_version,
'shared': shared, 'name': name + '-scope'}
with db_api.CONTEXT_WRITER.using(self.context):
yield self.driver.create_address_scope(
self.context,
{'address_scope': scope_data})
@contextlib.contextmanager
def subnetpool(self, ip_version, prefixes=None, shared=False, admin=True,
name='test-pool', is_default_pool=False, project_id=None,
address_scope_id=None, **kwargs):
tenant_id = project_id if project_id else kwargs.get(
'tenant_id', None)
if not tenant_id:
tenant_id = self._tenant_id
pool_data = {'tenant_id': tenant_id, 'shared': shared, 'name': name,
'address_scope_id': address_scope_id,
'prefixes': prefixes, 'is_default': is_default_pool}
for key in kwargs:
pool_data[key] = kwargs[key]
with db_api.CONTEXT_WRITER.using(self.context):
yield self.driver.create_subnetpool(self.context,
{'subnetpool': pool_data})
def _make_request_payload(self, prefixes):
return {'prefixes': prefixes}
def test_add_prefix_no_address_scope(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
self.driver.add_prefixes(
self.context,
subnetpool['id'],
self._make_request_payload([self.cidr_to_add]))
self._validate_prefix_list(subnetpool['id'],
[self.cidr_to_add])
def test_add_prefix_invalid_request_body_structure(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
self.assertRaises(webob.exc.HTTPBadRequest,
self.driver.add_prefixes,
self.context,
subnetpool['id'],
[self.cidr_to_add])
def test_add_prefix_invalid_request_data(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
self.assertRaises(webob.exc.HTTPBadRequest,
self.driver.add_prefixes,
self.context,
subnetpool['id'],
['not a CIDR'])
def test_add_prefix_no_address_scope_overlapping_cidr(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
prefixes_to_add = [self.cidr_to_add, self.overlapping_cidr]
self.driver.add_prefixes(
self.context,
subnetpool['id'],
self._make_request_payload([self.cidr_to_add]))
self._validate_prefix_list(subnetpool['id'], prefixes_to_add)
def test_add_prefix_with_address_scope_overlapping_cidr(self):
with self.address_scope(self.ip_version) as addr_scope:
with self.subnetpool(self.ip_version,
prefixes=[self.subnetpool_prefixes[0]],
address_scope_id=addr_scope['id']) as sp_to_augment,\
self.subnetpool(self.ip_version,
prefixes=[self.subnetpool_prefixes[1]],
address_scope_id=addr_scope['id']):
prefixes_to_add = [self.cidr_to_add]
self.driver.add_prefixes(
self.context,
sp_to_augment['id'],
self._make_request_payload([self.cidr_to_add]))
self._validate_prefix_list(sp_to_augment['id'],
prefixes_to_add)
def test_add_prefix_with_address_scope(self):
with self.address_scope(self.ip_version) as addr_scope:
with self.subnetpool(self.ip_version,
prefixes=[self.subnetpool_prefixes[1]],
address_scope_id=addr_scope['id']) as sp_to_augment,\
self.subnetpool(self.ip_version,
prefixes=[self.subnetpool_prefixes[0]],
address_scope_id=addr_scope['id']):
prefixes_to_add = [self.overlapping_cidr]
self.assertRaises(exc.AddressScopePrefixConflict,
self.driver.add_prefixes,
self.context,
sp_to_augment['id'],
self._make_request_payload(prefixes_to_add))
def test_remove_prefix(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
prefixes_to_remove = [self.subnetpool_prefixes[0]]
self.driver.remove_prefixes(
self.context,
subnetpool['id'],
self._make_request_payload(prefixes_to_remove))
self._validate_prefix_list(subnetpool['id'],
[self.subnetpool_prefixes[1]],
excluded_prefixes=prefixes_to_remove)
def test_remove_prefix_invalid_request_body_structure(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
self.assertRaises(webob.exc.HTTPBadRequest,
self.driver.remove_prefixes,
self.context,
subnetpool['id'],
[self.subnetpool_prefixes[0]])
def test_remove_prefix_invalid_request_data(self):
with self.subnetpool(self.ip_version,
prefixes=self.subnetpool_prefixes) as subnetpool:
self.assertRaises(webob.exc.HTTPBadRequest,
self.driver.remove_prefixes,
self.context,
subnetpool['id'],
['not a CIDR'])
def test_remove_prefix_with_allocated_subnet(self):
with self.subnetpool(self.ip_version,
default_prefixlen=self.default_prefixlen,
min_prefixlen=self.default_prefixlen,
prefixes=self.subnetpool_prefixes) as subnetpool:
with self.subnet(cidr=None, subnetpool_id=subnetpool['id'],
ip_version=self.ip_version) as subnet:
subnet = subnet['subnet']
prefixes_to_remove = [subnet['cidr']]
self.assertRaises(
exc.IllegalSubnetPoolPrefixUpdate,
self.driver.remove_prefixes,
self.context,
subnetpool['id'],
self._make_request_payload(prefixes_to_remove))
def test_remove_overlapping_prefix_with_allocated_subnet(self):
with self.subnetpool(
self.ip_version,
default_prefixlen=self.default_prefixlen,
min_prefixlen=self.default_prefixlen,
prefixes=[self.subnetpool_prefixes[0]]) as subnetpool:
with self.subnet(cidr=None, subnetpool_id=subnetpool['id'],
ip_version=self.ip_version) as subnet:
subnet = subnet['subnet']
prefixes_to_remove = [self.overlapping_cidr]
self.assertRaises(
exc.IllegalSubnetPoolPrefixUpdate,
self.driver.remove_prefixes,
self.context,
subnetpool['id'],
self._make_request_payload(prefixes_to_remove))
def _validate_prefix_list(self, subnetpool_id, expected_prefixes,
excluded_prefixes=None):
if not excluded_prefixes:
excluded_prefixes = []
subnetpool = subnetpool_obj.SubnetPool.get_object(
self.context,
id=subnetpool_id)
current_prefix_set = netaddr.IPSet(list(subnetpool.prefixes))
expected_prefix_set = netaddr.IPSet(expected_prefixes)
excluded_prefix_set = netaddr.IPSet(excluded_prefixes)
self.assertTrue(expected_prefix_set.issubset(current_prefix_set))
self.assertTrue(excluded_prefix_set.isdisjoint(current_prefix_set))
class SubnetpoolPrefixOpsTestsIpv4(SubnetpoolPrefixOpsTestBase,
test_plugin.Ml2PluginV2TestCase):
subnetpool_prefixes = ["192.168.1.0/24", "192.168.2.0/24"]
cidr_to_add = "10.0.0.0/24"
overlapping_cidr = "192.168.1.128/25"
default_prefixlen = 24
ip_version = 4
class SubnetpoolPrefixOpsTestsIpv6(SubnetpoolPrefixOpsTestBase,
test_plugin.Ml2PluginV2TestCase):
subnetpool_prefixes = ["2001:db8:1234::/48",
"2001:db8:1235::/48"]
cidr_to_add = "2001:db8:4321::/48"
overlapping_cidr = "2001:db8:1234:1111::/64"
default_prefixlen = 48
ip_version = 6
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