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# Copyright (c) 2014 OpenStack Foundation, 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.
from unittest import mock
from neutron_lib.api.definitions import portbindings
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from neutron_lib import constants
from neutron_lib import context
from neutron_lib import exceptions as lib_exc
from neutron_lib.exceptions import dvr as dvr_exc
from neutron_lib import fixture
from neutron_lib.plugins import directory
from neutron_lib.tests import tools
from neutron_lib.utils import net
from neutron.db import dvr_mac_db
from neutron.objects import router
from neutron.tests.unit.plugins.ml2 import test_plugin
class DVRDbMixinImpl(dvr_mac_db.DVRDbMixin):
def __init__(self, notifier):
self.notifier = notifier
class DvrDbMixinTestCase(test_plugin.Ml2PluginV2TestCase):
def setUp(self):
super(DvrDbMixinTestCase, self).setUp()
self.ctx = context.get_admin_context()
self.mixin = DVRDbMixinImpl(mock.Mock())
def _create_dvr_mac_entry(self, host, mac_address):
router.DVRMacAddress(
self.ctx, host=host, mac_address=mac_address).create()
def test__get_dvr_mac_address_by_host(self):
entry = router.DVRMacAddress(
self.ctx, host='foo_host',
mac_address=tools.get_random_EUI())
entry.create()
result = self.mixin._get_dvr_mac_address_by_host(self.ctx, 'foo_host')
self.assertEqual(entry.to_dict(), result)
def test__get_dvr_mac_address_by_host_not_found(self):
self.assertRaises(dvr_exc.DVRMacAddressNotFound,
self.mixin._get_dvr_mac_address_by_host,
self.ctx, 'foo_host')
def test__create_dvr_mac_address_success(self):
entry = {'host': 'foo_host', 'mac_address': tools.get_random_EUI()}
with mock.patch.object(net, 'get_random_mac') as f:
f.return_value = entry['mac_address']
expected = self.mixin._create_dvr_mac_address(
self.ctx, entry['host'])
self.assertEqual(expected, entry)
def test__create_dvr_mac_address_retries_exceeded_retry_logic(self):
# limit retries so test doesn't take 40 seconds
retry_fixture = fixture.DBRetryErrorsFixture(max_retries=2)
retry_fixture.setUp()
non_unique_mac = tools.get_random_EUI()
self._create_dvr_mac_entry('foo_host_1', non_unique_mac)
with mock.patch.object(net, 'get_random_mac') as f:
f.return_value = non_unique_mac
self.assertRaises(lib_exc.HostMacAddressGenerationFailure,
self.mixin._create_dvr_mac_address,
self.ctx, "foo_host_2")
retry_fixture.cleanUp()
def test_mac_not_cleared_on_agent_delete_event_with_remaining_agents(self):
plugin = directory.get_plugin()
mac_1 = tools.get_random_EUI()
mac_2 = tools.get_random_EUI()
self._create_dvr_mac_entry('host_1', mac_1)
self._create_dvr_mac_entry('host_2', mac_2)
agent1 = {'host': 'host_1', 'id': 'a1'}
agent2 = {'host': 'host_1', 'id': 'a2'}
with mock.patch.object(plugin, 'get_agents', return_value=[agent2]):
with mock.patch.object(plugin, 'notifier') as notifier:
registry.publish(resources.AGENT, events.BEFORE_DELETE, self,
payload=events.DBEventPayload(
self.ctx, states=(agent1,)))
mac_list = self.mixin.get_dvr_mac_address_list(self.ctx)
for mac in mac_list:
self.assertIsInstance(mac, dict)
self.assertEqual(2, len(mac_list))
self.assertFalse(notifier.dvr_mac_address_update.called)
def test_mac_cleared_on_agent_delete_event(self):
plugin = directory.get_plugin()
mac_1 = tools.get_random_EUI()
mac_2 = tools.get_random_EUI()
self._create_dvr_mac_entry('host_1', mac_1)
self._create_dvr_mac_entry('host_2', mac_2)
agent = {'host': 'host_1', 'id': 'a1'}
with mock.patch.object(plugin, 'notifier') as notifier:
registry.publish(resources.AGENT, events.BEFORE_DELETE, self,
payload=events.DBEventPayload(
self.ctx, states=(agent,)))
mac_list = self.mixin.get_dvr_mac_address_list(self.ctx)
self.assertEqual(1, len(mac_list))
for mac in mac_list:
self.assertIsInstance(mac, dict)
self.assertEqual('host_2', mac_list[0]['host'])
notifier.dvr_mac_address_update.assert_called_once_with(
self.ctx, mac_list)
def test_get_dvr_mac_address_list(self):
mac_1 = tools.get_random_EUI()
mac_2 = tools.get_random_EUI()
self._create_dvr_mac_entry('host_1', mac_1)
self._create_dvr_mac_entry('host_2', mac_2)
mac_list = self.mixin.get_dvr_mac_address_list(self.ctx)
self.assertEqual(2, len(mac_list))
for mac in mac_list:
self.assertIsInstance(mac, dict)
def test_get_dvr_mac_address_by_host_existing_host(self):
self._create_dvr_mac_entry('foo_host', tools.get_random_EUI())
with mock.patch.object(self.mixin,
'_get_dvr_mac_address_by_host') as f:
self.mixin.get_dvr_mac_address_by_host(self.ctx, 'foo_host')
self.assertEqual(1, f.call_count)
def test_get_dvr_mac_address_by_host_missing_host(self):
with mock.patch.object(self.mixin, '_create_dvr_mac_address') as f:
self.mixin.get_dvr_mac_address_by_host(self.ctx, 'foo_host')
self.assertEqual(1, f.call_count)
def test_get_subnet_for_dvr_returns_correct_mac(self):
with self.subnet() as subnet,\
self.port(subnet=subnet),\
self.port(subnet=subnet):
dvr_subnet = self.mixin.get_subnet_for_dvr(self.ctx,
subnet['subnet']['id'])
# no gateway port should be found so no info should be returned
self.assertEqual({}, dvr_subnet)
with self.port(
subnet=subnet,
fixed_ips=[{'ip_address': subnet['subnet'][
'gateway_ip']}]) as gw_port:
dvr_subnet = self.mixin.get_subnet_for_dvr(
self.ctx, subnet['subnet']['id'])
self.assertEqual(gw_port['port']['mac_address'],
dvr_subnet['gateway_mac'])
def test_get_subnet_for_dvr_returns_correct_mac_fixed_ips_passed(self):
with self.subnet() as subnet,\
self.port(subnet=subnet,
fixed_ips=[{'ip_address': '10.0.0.2'}]),\
self.port(subnet=subnet,
fixed_ips=[{'ip_address': '10.0.0.3'}]):
fixed_ips = [{'subnet_id': subnet['subnet']['id'],
'ip_address': '10.0.0.4'}]
dvr_subnet = self.mixin.get_subnet_for_dvr(
self.ctx, subnet['subnet']['id'], fixed_ips)
# no gateway port should be found so no info should be returned
self.assertEqual({}, dvr_subnet)
with self.port(
subnet=subnet,
fixed_ips=[{'ip_address': '10.0.0.4'}]) as gw_port:
dvr_subnet = self.mixin.get_subnet_for_dvr(
self.ctx, subnet['subnet']['id'], fixed_ips)
self.assertEqual(gw_port['port']['mac_address'],
dvr_subnet['gateway_mac'])
def test_get_ports_on_host_by_subnet(self):
HOST = 'host1'
host_arg = {portbindings.HOST_ID: HOST}
arg_list = (portbindings.HOST_ID,)
with self.subnet() as subnet,\
self.port(subnet=subnet,
device_owner=constants.DEVICE_OWNER_COMPUTE_PREFIX,
arg_list=arg_list, **host_arg) as compute_port,\
self.port(subnet=subnet,
device_owner=constants.DEVICE_OWNER_DHCP,
arg_list=arg_list, **host_arg) as dhcp_port,\
self.port(subnet=subnet,
device_owner=constants.DEVICE_OWNER_LOADBALANCER,
arg_list=arg_list, **host_arg) as lb_port,\
self.port(device_owner=constants.DEVICE_OWNER_COMPUTE_PREFIX,
arg_list=arg_list, **host_arg),\
self.port(subnet=subnet,
device_owner=constants.DEVICE_OWNER_COMPUTE_PREFIX,
arg_list=arg_list,
**{portbindings.HOST_ID: 'other'}),\
self.port(subnet=subnet,
device_owner=constants.DEVICE_OWNER_NETWORK_PREFIX,
arg_list=arg_list, **host_arg):
expected_ids = [port['port']['id'] for port in
[compute_port, dhcp_port, lb_port]]
dvr_ports = self.mixin.get_ports_on_host_by_subnet(
self.ctx, HOST, subnet['subnet']['id'])
self.assertEqual(len(expected_ids), len(dvr_ports))
self.assertCountEqual(expected_ids,
[port['id'] for port in dvr_ports])
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