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OpenStack Study: test_lb_db.py

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# Copyright (c) 2012 OpenStack Foundation.

#

# 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.

from oslo.config import cfg

from six.moves import xrange

import testtools

from testtools import matchers

from neutron.common import exceptions as n_exc

from neutron.db import api as db

from neutron.plugins.linuxbridge.db import l2network_db_v2 as lb_db

from neutron.tests import base

from neutron.tests.unit import test_db_plugin as test_plugin

PHYS_NET = 'physnet1'

PHYS_NET_2 = 'physnet2'

VLAN_MIN = 10

VLAN_MAX = 19

VLAN_RANGES = {PHYS_NET: [(VLAN_MIN, VLAN_MAX)]}

UPDATED_VLAN_RANGES = {PHYS_NET: [(VLAN_MIN + 5, VLAN_MAX + 5)],

PHYS_NET_2: [(VLAN_MIN + 20, VLAN_MAX + 20)]}

PLUGIN_NAME = ('neutron.plugins.linuxbridge.'

'lb_neutron_plugin.LinuxBridgePluginV2')

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class NetworkStatesTest(base.BaseTestCase):

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    def setUp(self):

        super(NetworkStatesTest, self).setUp()

        db.configure_db()

        lb_db.sync_network_states(VLAN_RANGES)

        self.session = db.get_session()

        self.addCleanup(db.clear_db)

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    def test_sync_network_states(self):

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MIN - 1))

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN + 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX - 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX).allocated)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MAX + 1))

        lb_db.sync_network_states(UPDATED_VLAN_RANGES)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MIN + 5 - 1))

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN + 5).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN + 5 + 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX + 5 - 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX + 5).allocated)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MAX + 5 + 1))

        self.assertIsNone(lb_db.get_network_state(PHYS_NET_2,

                                                  VLAN_MIN + 20 - 1))

        self.assertFalse(lb_db.get_network_state(PHYS_NET_2,

                                                 VLAN_MIN + 20).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET_2,

                                                 VLAN_MIN + 20 + 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET_2,

                                                 VLAN_MAX + 20 - 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET_2,

                                                 VLAN_MAX + 20).allocated)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET_2,

                                                  VLAN_MAX + 20 + 1))

        lb_db.sync_network_states(VLAN_RANGES)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MIN - 1))

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MIN + 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX - 1).allocated)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 VLAN_MAX).allocated)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET,

                                                  VLAN_MAX + 1))

        self.assertIsNone(lb_db.get_network_state(PHYS_NET_2,

                                                  VLAN_MIN + 20))

        self.assertIsNone(lb_db.get_network_state(PHYS_NET_2,

                                                  VLAN_MAX + 20))

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    def test_network_pool(self):

        vlan_ids = set()

        for x in xrange(VLAN_MIN, VLAN_MAX + 1):

            physical_network, vlan_id = lb_db.reserve_network(self.session)

            self.assertEqual(physical_network, PHYS_NET)

            self.assertThat(vlan_id, matchers.GreaterThan(VLAN_MIN - 1))

            self.assertThat(vlan_id, matchers.LessThan(VLAN_MAX + 1))

            vlan_ids.add(vlan_id)

        with testtools.ExpectedException(n_exc.NoNetworkAvailable):

            physical_network, vlan_id = lb_db.reserve_network(self.session)

        for vlan_id in vlan_ids:

            lb_db.release_network(self.session, PHYS_NET, vlan_id, VLAN_RANGES)

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    def test_specific_network_inside_pool(self):

        vlan_id = VLAN_MIN + 5

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 vlan_id).allocated)

        lb_db.reserve_specific_network(self.session, PHYS_NET, vlan_id)

        self.assertTrue(lb_db.get_network_state(PHYS_NET,

                                                vlan_id).allocated)

        with testtools.ExpectedException(n_exc.VlanIdInUse):

            lb_db.reserve_specific_network(self.session, PHYS_NET, vlan_id)

        lb_db.release_network(self.session, PHYS_NET, vlan_id, VLAN_RANGES)

        self.assertFalse(lb_db.get_network_state(PHYS_NET,

                                                 vlan_id).allocated)

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    def test_specific_network_outside_pool(self):

        vlan_id = VLAN_MAX + 5

        self.assertIsNone(lb_db.get_network_state(PHYS_NET, vlan_id))

        lb_db.reserve_specific_network(self.session, PHYS_NET, vlan_id)

        self.assertTrue(lb_db.get_network_state(PHYS_NET,

                                                vlan_id).allocated)

        with testtools.ExpectedException(n_exc.VlanIdInUse):

            lb_db.reserve_specific_network(self.session, PHYS_NET, vlan_id)

        lb_db.release_network(self.session, PHYS_NET, vlan_id, VLAN_RANGES)

        self.assertIsNone(lb_db.get_network_state(PHYS_NET, vlan_id))

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class NetworkBindingsTest(test_plugin.NeutronDbPluginV2TestCase):

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    def setUp(self):

        cfg.CONF.set_override('network_vlan_ranges', ['physnet1:1000:2999'],

                              group='VLANS')

        super(NetworkBindingsTest, self).setUp(plugin=PLUGIN_NAME)

        db.configure_db()

        self.session = db.get_session()

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    def test_add_network_binding(self):

        params = {'provider:network_type': 'vlan',

                  'provider:physical_network': PHYS_NET,

                  'provider:segmentation_id': 1234}

        params['arg_list'] = tuple(params.keys())

        with self.network(**params) as network:

            TEST_NETWORK_ID = network['network']['id']

            binding = lb_db.get_network_binding(self.session, TEST_NETWORK_ID)

            self.assertIsNotNone(binding)

            self.assertEqual(binding.network_id, TEST_NETWORK_ID)

            self.assertEqual(binding.physical_network, PHYS_NET)

            self.assertEqual(binding.vlan_id, 1234)