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 context
from oslo_db import exception as exc
from sqlalchemy.orm import query
from neutron.plugins.ml2.drivers import type_vlan
from neutron.tests.unit import testlib_api
TENANT_NET = 'phys_net2'
VLAN_MIN = 200
VLAN_MAX = 209
VLAN_OUTSIDE = 100
NETWORK_VLAN_RANGES = {
TENANT_NET: [(VLAN_MIN, VLAN_MAX)],
}
class HelpersTest(testlib_api.SqlTestCase):
def setUp(self):
super(HelpersTest, self).setUp()
self.driver = type_vlan.VlanTypeDriver()
self.driver.network_vlan_ranges = NETWORK_VLAN_RANGES
self.driver._sync_vlan_allocations()
self.context = context.get_admin_context()
def check_raw_segment(self, expected, observed):
for key, value in expected.items():
self.assertEqual(value, observed[key])
def test_primary_keys(self):
self.assertEqual(set(['physical_network', 'vlan_id']),
self.driver.primary_keys)
def test_allocate_specific_unallocated_segment_in_pools(self):
expected = dict(physical_network=TENANT_NET, vlan_id=VLAN_MIN)
observed = self.driver.allocate_fully_specified_segment(self.context,
**expected)
self.check_raw_segment(expected, observed)
def test_allocate_specific_allocated_segment_in_pools(self):
raw_segment = dict(physical_network=TENANT_NET, vlan_id=VLAN_MIN)
self.driver.allocate_fully_specified_segment(self.context,
**raw_segment)
observed = self.driver.allocate_fully_specified_segment(self.context,
**raw_segment)
self.assertIsNone(observed)
def test_allocate_specific_finally_allocated_segment_in_pools(self):
# Test case: allocate a specific unallocated segment in pools but
# the segment is allocated concurrently between select and update
raw_segment = dict(physical_network=TENANT_NET, vlan_id=VLAN_MIN)
with mock.patch.object(query.Query, 'update', return_value=0):
observed = self.driver.allocate_fully_specified_segment(
self.context, **raw_segment)
self.assertIsNone(observed)
def test_allocate_specific_unallocated_segment_outside_pools(self):
expected = dict(physical_network=TENANT_NET, vlan_id=VLAN_OUTSIDE)
observed = self.driver.allocate_fully_specified_segment(self.context,
**expected)
self.check_raw_segment(expected, observed)
def test_allocate_specific_allocated_segment_outside_pools(self):
raw_segment = dict(physical_network=TENANT_NET, vlan_id=VLAN_OUTSIDE)
self.driver.allocate_fully_specified_segment(self.context,
**raw_segment)
observed = self.driver.allocate_fully_specified_segment(self.context,
**raw_segment)
self.assertIsNone(observed)
def test_allocate_specific_finally_unallocated_segment_outside_pools(self):
# Test case: allocate a specific allocated segment in pools but
# the segment is concurrently unallocated after select or update
expected = dict(physical_network=TENANT_NET, vlan_id=VLAN_MIN)
with mock.patch.object(self.driver.model, 'save'):
observed = self.driver.allocate_fully_specified_segment(
self.context, **expected)
self.check_raw_segment(expected, observed)
def test_allocate_partial_segment_without_filters(self):
expected = dict(physical_network=TENANT_NET)
observed = self.driver.allocate_partially_specified_segment(
self.context)
self.check_raw_segment(expected, observed)
def test_allocate_partial_segment_with_filter(self):
expected = dict(physical_network=TENANT_NET)
observed = self.driver.allocate_partially_specified_segment(
self.context, **expected)
self.check_raw_segment(expected, observed)
def test_allocate_partial_segment_no_resource_available(self):
for i in range(VLAN_MIN, VLAN_MAX + 1):
self.driver.allocate_partially_specified_segment(self.context)
observed = self.driver.allocate_partially_specified_segment(
self.context)
self.assertIsNone(observed)
def test_allocate_partial_segment_outside_pools(self):
raw_segment = dict(physical_network='other_phys_net')
observed = self.driver.allocate_partially_specified_segment(
self.context, **raw_segment)
self.assertIsNone(observed)
def test_allocate_partial_segment_first_attempt_fails(self):
expected = dict(physical_network=TENANT_NET)
with mock.patch.object(query.Query, 'update', side_effect=[0, 1]):
self.assertRaises(
exc.RetryRequest,
self.driver.allocate_partially_specified_segment,
self.context, **expected)
observed = self.driver.allocate_partially_specified_segment(
self.context, **expected)
self.check_raw_segment(expected, observed)