OpenStack Networking (Neutron)
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# Copyright (c) 2014 Thales Services SAS
# 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 mock
from neutron_lib import constants as p_const
from neutron_lib import context
from neutron_lib.db import api as db_api
from neutron_lib import exceptions as exc
from neutron_lib.plugins.ml2 import api
from neutron_lib.plugins import utils as plugin_utils
from oslo_config import cfg
from testtools import matchers
from neutron.objects import network_segment_range as obj_network_segment_range
from neutron.objects.plugins.ml2 import vlanallocation as vlan_alloc_obj
from neutron.plugins.ml2.drivers import type_vlan
from neutron.tests.unit import testlib_api
PROVIDER_NET = 'phys_net1'
TENANT_NET = 'phys_net2'
UNCONFIGURED_NET = 'no_net'
VLAN_MIN = 200
VLAN_MAX = 209
NETWORK_VLAN_RANGES = [PROVIDER_NET, "%s:%s:%s" %
(TENANT_NET, VLAN_MIN, VLAN_MAX)]
UPDATED_VLAN_RANGES = {
PROVIDER_NET: [],
TENANT_NET: [(VLAN_MIN + 5, VLAN_MAX + 5)],
}
EMPTY_VLAN_RANGES = {
PROVIDER_NET: []
}
NETWORK_VLAN_RANGES_WITH_UNCONFIG = {
PROVIDER_NET: [],
TENANT_NET: [(VLAN_MIN + 5, VLAN_MAX + 5)],
UNCONFIGURED_NET: [(VLAN_MIN, VLAN_MAX)]
}
CORE_PLUGIN = 'ml2'
SERVICE_PLUGIN_KLASS = ('neutron.services.network_segment_range.plugin.'
'NetworkSegmentRangePlugin')
class VlanTypeTest(testlib_api.SqlTestCase):
def setUp(self):
super(VlanTypeTest, self).setUp()
cfg.CONF.set_override('network_vlan_ranges',
NETWORK_VLAN_RANGES,
group='ml2_type_vlan')
self.network_vlan_ranges = plugin_utils.parse_network_vlan_ranges(
NETWORK_VLAN_RANGES)
self.driver = type_vlan.VlanTypeDriver()
self.driver._sync_vlan_allocations()
self.context = context.Context()
self.driver.physnet_mtus = []
self.setup_coreplugin(CORE_PLUGIN)
def test_parse_network_exception_handling(self):
with mock.patch.object(plugin_utils,
'parse_network_vlan_ranges') as parse_ranges:
parse_ranges.side_effect = Exception('any exception')
self.assertRaises(SystemExit,
self.driver._parse_network_vlan_ranges)
@db_api.CONTEXT_READER
def _get_allocation(self, context, segment):
return vlan_alloc_obj.VlanAllocation.get_object(
context,
physical_network=segment[api.PHYSICAL_NETWORK],
vlan_id=segment[api.SEGMENTATION_ID])
def test_partial_segment_is_partial_segment(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN}
self.assertTrue(self.driver.is_partial_segment(segment))
def test_specific_segment_is_not_partial_segment(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 1}
self.assertFalse(self.driver.is_partial_segment(segment))
def test_validate_provider_segment(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 1}
self.assertIsNone(self.driver.validate_provider_segment(segment))
def test_validate_provider_segment_without_segmentation_id(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: TENANT_NET}
self.driver.validate_provider_segment(segment)
def test_validate_provider_segment_without_physical_network(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN}
self.driver.validate_provider_segment(segment)
def test_validate_provider_segment_no_phys_network_seg_id_0(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.SEGMENTATION_ID: 0}
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_validate_provider_segment_with_missing_physical_network(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.SEGMENTATION_ID: 1}
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_validate_provider_segment_with_invalid_physical_network(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: 'other_phys_net',
api.SEGMENTATION_ID: 1}
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_validate_provider_segment_with_invalid_segmentation_id(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET}
segmentation_ids = [
p_const.MIN_VLAN_TAG - 1,
p_const.MAX_VLAN_TAG + 1]
for segmentation_id in segmentation_ids:
segment[api.SEGMENTATION_ID] = segmentation_id
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_validate_provider_segment_with_invalid_input(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 1,
'invalid': 1}
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_validate_provider_segment_with_physical_network_only(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET}
self.assertRaises(exc.InvalidInput,
self.driver.validate_provider_segment,
segment)
def test_sync_vlan_allocations(self):
def check_in_ranges(network_vlan_ranges):
vlan_min, vlan_max = network_vlan_ranges[TENANT_NET][0]
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: TENANT_NET}
segment[api.SEGMENTATION_ID] = vlan_min - 1
self.assertIsNone(
self._get_allocation(self.context, segment))
segment[api.SEGMENTATION_ID] = vlan_max + 1
self.assertIsNone(
self._get_allocation(self.context, segment))
segment[api.SEGMENTATION_ID] = vlan_min
self.assertFalse(
self._get_allocation(self.context, segment).allocated)
segment[api.SEGMENTATION_ID] = vlan_max
self.assertFalse(
self._get_allocation(self.context, segment).allocated)
check_in_ranges(self.network_vlan_ranges)
self.driver.network_vlan_ranges = UPDATED_VLAN_RANGES
self.driver._sync_vlan_allocations()
check_in_ranges(UPDATED_VLAN_RANGES)
self.driver.network_vlan_ranges = NETWORK_VLAN_RANGES_WITH_UNCONFIG
self.driver._sync_vlan_allocations()
self.driver.network_vlan_ranges = UPDATED_VLAN_RANGES
with mock.patch.object(type_vlan.LOG, 'debug') as mock_debug:
self.driver._sync_vlan_allocations()
mock_debug.assert_called_once_with(
'Removing any VLAN register on physical networks %s',
{UNCONFIGURED_NET})
check_in_ranges(UPDATED_VLAN_RANGES)
self.driver.network_vlan_ranges = EMPTY_VLAN_RANGES
self.driver._sync_vlan_allocations()
vlan_min, vlan_max = UPDATED_VLAN_RANGES[TENANT_NET][0]
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: TENANT_NET}
segment[api.SEGMENTATION_ID] = vlan_min
self.assertIsNone(
self._get_allocation(self.context, segment))
segment[api.SEGMENTATION_ID] = vlan_max
self.assertIsNone(
self._get_allocation(self.context, segment))
def test_reserve_provider_segment(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 101}
alloc = self._get_allocation(self.context, segment)
self.assertIsNone(alloc)
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self._get_allocation(self.context, observed)
self.assertTrue(alloc.allocated)
def test_reserve_provider_segment_already_allocated(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 101}
observed = self.driver.reserve_provider_segment(self.context, segment)
self.assertRaises(exc.VlanIdInUse,
self.driver.reserve_provider_segment,
self.context,
observed)
def test_reserve_provider_segment_in_tenant_pools(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: TENANT_NET,
api.SEGMENTATION_ID: VLAN_MIN}
alloc = self._get_allocation(self.context, segment)
self.assertFalse(alloc.allocated)
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self._get_allocation(self.context, observed)
self.assertTrue(alloc.allocated)
def test_reserve_provider_segment_without_segmentation_id(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: TENANT_NET}
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self._get_allocation(self.context, observed)
self.assertTrue(alloc.allocated)
vlan_id = observed[api.SEGMENTATION_ID]
self.assertThat(vlan_id, matchers.GreaterThan(VLAN_MIN - 1))
self.assertThat(vlan_id, matchers.LessThan(VLAN_MAX + 1))
def test_reserve_provider_segment_without_physical_network(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN}
observed = self.driver.reserve_provider_segment(self.context, segment)
alloc = self._get_allocation(self.context, observed)
self.assertTrue(alloc.allocated)
vlan_id = observed[api.SEGMENTATION_ID]
self.assertThat(vlan_id, matchers.GreaterThan(VLAN_MIN - 1))
self.assertThat(vlan_id, matchers.LessThan(VLAN_MAX + 1))
self.assertEqual(TENANT_NET, observed[api.PHYSICAL_NETWORK])
def test_reserve_provider_segment_all_allocateds(self):
for __ in range(VLAN_MIN, VLAN_MAX + 1):
self.driver.allocate_tenant_segment(self.context)
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN}
self.assertRaises(exc.NoNetworkAvailable,
self.driver.reserve_provider_segment,
self.context,
segment)
def test_get_mtu(self):
cfg.CONF.set_override('global_physnet_mtu', 1475)
cfg.CONF.set_override('path_mtu', 1400, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1450, 'physnet2': 1400}
self.assertEqual(1450, self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 1375)
cfg.CONF.set_override('path_mtu', 1400, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1450, 'physnet2': 1400}
self.assertEqual(1375, self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 0)
cfg.CONF.set_override('path_mtu', 1400, group='ml2')
self.driver.physnet_mtus = {'physnet1': 1450, 'physnet2': 1400}
self.assertEqual(1450, self.driver.get_mtu('physnet1'))
cfg.CONF.set_override('global_physnet_mtu', 0)
cfg.CONF.set_override('path_mtu', 0, group='ml2')
self.driver.physnet_mtus = {}
self.assertEqual(0, self.driver.get_mtu('physnet1'))
def test_allocate_tenant_segment(self):
for __ in range(VLAN_MIN, VLAN_MAX + 1):
segment = self.driver.allocate_tenant_segment(self.context)
alloc = self._get_allocation(self.context, segment)
self.assertTrue(alloc.allocated)
vlan_id = segment[api.SEGMENTATION_ID]
self.assertThat(vlan_id, matchers.GreaterThan(VLAN_MIN - 1))
self.assertThat(vlan_id, matchers.LessThan(VLAN_MAX + 1))
self.assertEqual(TENANT_NET, segment[api.PHYSICAL_NETWORK])
def test_allocate_tenant_segment_no_available(self):
for __ in range(VLAN_MIN, VLAN_MAX + 1):
self.driver.allocate_tenant_segment(self.context)
segment = self.driver.allocate_tenant_segment(self.context)
self.assertIsNone(segment)
def test_release_segment(self):
segment = self.driver.allocate_tenant_segment(self.context)
self.driver.release_segment(self.context, segment)
alloc = self._get_allocation(self.context, segment)
self.assertFalse(alloc.allocated)
def test_release_segment_unallocated(self):
segment = {api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: PROVIDER_NET,
api.SEGMENTATION_ID: 101}
with mock.patch.object(type_vlan.LOG, 'warning') as log_warn:
self.driver.release_segment(self.context, segment)
log_warn.assert_called_once_with(
"No vlan_id %(vlan_id)s found on physical network "
"%(physical_network)s",
{'vlan_id': 101, 'physical_network': PROVIDER_NET})
class VlanTypeAllocationTest(testlib_api.SqlTestCase):
def test_allocate_tenant_segment_in_order_of_config(self):
ranges = NETWORK_VLAN_RANGES + ['phys_net3:20:30']
cfg.CONF.set_override('network_vlan_ranges',
ranges,
group='ml2_type_vlan')
driver = type_vlan.VlanTypeDriver()
driver.physnet_mtus = []
driver._sync_vlan_allocations()
# swap config order from DB order after sync has happened to
# ensure config order is followed and not DB order
cfg.CONF.set_override('network_vlan_ranges',
list(reversed(ranges)),
group='ml2_type_vlan')
driver._parse_network_vlan_ranges()
ctx = context.Context()
for vlan in range(11):
# all of physnet3 should be exhausted first
self.assertEqual(
{'network_type': 'vlan', 'physical_network': 'phys_net3',
'segmentation_id': mock.ANY, 'mtu': 1500},
driver.allocate_tenant_segment(ctx))
for vlan in range(10):
# then physnet2
self.assertEqual(
{'network_type': 'vlan', 'physical_network': 'phys_net2',
'segmentation_id': mock.ANY, 'mtu': 1500},
driver.allocate_tenant_segment(ctx))
# then nothing
self.assertFalse(driver.allocate_tenant_segment(ctx))
class VlanTypeTestWithNetworkSegmentRange(testlib_api.SqlTestCase):
def setUp(self):
super(VlanTypeTestWithNetworkSegmentRange, self).setUp()
cfg.CONF.set_override('network_vlan_ranges',
NETWORK_VLAN_RANGES,
group='ml2_type_vlan')
cfg.CONF.set_override('service_plugins', [SERVICE_PLUGIN_KLASS])
self.network_vlan_ranges = plugin_utils.parse_network_vlan_ranges(
NETWORK_VLAN_RANGES)
self.driver = type_vlan.VlanTypeDriver()
self.driver._sync_vlan_allocations()
self.context = context.Context()
self.setup_coreplugin(CORE_PLUGIN)
def test__populate_new_default_network_segment_ranges(self):
# _populate_new_default_network_segment_ranges will be called when
# the type driver initializes with `network_segment_range` loaded as
# one of the `service_plugins`
ret = obj_network_segment_range.NetworkSegmentRange.get_objects(
self.context)
self.assertEqual(1, len(ret))
network_segment_range = ret[0]
self.assertTrue(network_segment_range.default)
self.assertTrue(network_segment_range.shared)
self.assertIsNone(network_segment_range.project_id)
self.assertEqual(p_const.TYPE_VLAN, network_segment_range.network_type)
self.assertEqual(TENANT_NET, network_segment_range.physical_network)
self.assertEqual(VLAN_MIN, network_segment_range.minimum)
self.assertEqual(VLAN_MAX, network_segment_range.maximum)
def test__delete_expired_default_network_segment_ranges(self):
self.driver._delete_expired_default_network_segment_ranges()
ret = obj_network_segment_range.NetworkSegmentRange.get_objects(
self.context)
self.assertEqual(0, len(ret))