416 lines
19 KiB
Python
416 lines
19 KiB
Python
# Copyright (c) 2016 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from neutron_lib.api.definitions import portbindings
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from neutron_lib import constants
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from neutron.common import topics
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from neutron.extensions import external_net
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from neutron.extensions import l3
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from neutron.tests.common import helpers
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from neutron.tests.functional.services.l3_router import \
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test_l3_dvr_router_plugin
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DEVICE_OWNER_COMPUTE = constants.DEVICE_OWNER_COMPUTE_PREFIX + 'fake'
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class L3DvrHATestCase(test_l3_dvr_router_plugin.L3DvrTestCase):
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def setUp(self):
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super(L3DvrHATestCase, self).setUp()
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self.l3_agent_2 = helpers.register_l3_agent(
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host="standby",
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agent_mode=constants.L3_AGENT_MODE_DVR_SNAT)
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def _create_router(self, distributed=True, ha=True, admin_state_up=True):
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return (super(L3DvrHATestCase, self).
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_create_router(distributed=distributed, ha=ha,
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admin_state_up=admin_state_up))
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def test_update_router_db_cvr_to_dvrha(self):
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router = self._create_router(distributed=False, ha=False,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': True, 'ha': True}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertTrue(router['distributed'])
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self.assertTrue(router['ha'])
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def test_update_router_db_dvrha_to_cvr(self):
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router = self._create_router(distributed=True, ha=True,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': False, 'ha': False}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertFalse(router['distributed'])
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self.assertFalse(router['ha'])
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def test_update_router_db_dvrha_to_dvr(self):
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router = self._create_router(distributed=True, ha=True,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context, router['id'], {'router': {'admin_state_up': False}})
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': True, 'ha': False}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertTrue(router['distributed'])
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self.assertFalse(router['ha'])
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def test_update_router_db_dvrha_to_cvrha(self):
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router = self._create_router(distributed=True, ha=True,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': False, 'ha': True}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertFalse(router['distributed'])
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self.assertTrue(router['ha'])
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def test_update_router_db_dvr_to_dvrha(self):
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router = self._create_router(distributed=True, ha=False,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': True, 'ha': True}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertTrue(router['distributed'])
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self.assertTrue(router['ha'])
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def test_update_router_db_cvrha_to_dvrha(self):
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router = self._create_router(distributed=False, ha=True,
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admin_state_up=False)
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self.l3_plugin.update_router(
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self.context,
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router['id'],
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{'router': {'distributed': True, 'ha': True}})
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router = self.l3_plugin.get_router(self.context, router['id'])
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self.assertTrue(router['distributed'])
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self.assertTrue(router['ha'])
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def _assert_router_is_hosted_on_both_dvr_snat_agents(self, router):
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agents = self.l3_plugin.list_l3_agents_hosting_router(
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self.context, router['id'])
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self.assertEqual(2, len(agents['agents']))
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dvr_snat_agents = self.l3_plugin.get_ha_router_port_bindings(
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self.context, [router['id']])
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dvr_snat_agent_ids = [a.l3_agent_id for a in dvr_snat_agents]
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self.assertIn(self.l3_agent['id'], dvr_snat_agent_ids)
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self.assertIn(self.l3_agent_2['id'], dvr_snat_agent_ids)
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def test_router_notifications(self):
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"""Check that notifications go to the right hosts in different
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conditions
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"""
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# register l3 agents in dvr mode in addition to existing dvr_snat agent
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HOST1, HOST2, HOST3 = 'host1', 'host2', 'host3'
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for host in [HOST1, HOST2, HOST3]:
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helpers.register_l3_agent(
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host=host, agent_mode=constants.L3_AGENT_MODE_DVR)
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router = self._create_router(distributed=True, ha=True)
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arg_list = (portbindings.HOST_ID,)
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with self.subnet() as ext_subnet, \
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self.subnet(cidr='20.0.0.0/24') as subnet1, \
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self.subnet(cidr='30.0.0.0/24') as subnet2, \
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self.subnet(cidr='40.0.0.0/24') as subnet3, \
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self.port(subnet=subnet1,
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device_owner=DEVICE_OWNER_COMPUTE,
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arg_list=arg_list,
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**{portbindings.HOST_ID: HOST1}), \
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self.port(subnet=subnet2,
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device_owner=constants.DEVICE_OWNER_DHCP,
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arg_list=arg_list,
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**{portbindings.HOST_ID: HOST2}), \
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self.port(subnet=subnet3,
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device_owner=constants.DEVICE_OWNER_NEUTRON_PREFIX,
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arg_list=arg_list,
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**{portbindings.HOST_ID: HOST3}):
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# make net external
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ext_net_id = ext_subnet['subnet']['network_id']
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self._update('networks', ext_net_id,
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{'network': {external_net.EXTERNAL: True}})
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with mock.patch.object(self.l3_plugin.l3_rpc_notifier.client,
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'prepare') as mock_prepare:
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# add external gateway to router
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self.l3_plugin.update_router(
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self.context, router['id'],
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{'router': {
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'external_gateway_info': {'network_id': ext_net_id}}})
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# router has no interfaces so notification goes
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# to only dvr_snat agents (self.l3_agent and self.l3_agent_2)
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self.assertEqual(2, mock_prepare.call_count)
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expected = [mock.call(server=self.l3_agent['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=self.l3_agent_2['host'],
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topic=topics.L3_AGENT,
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version='1.1')]
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mock_prepare.assert_has_calls(expected, any_order=True)
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mock_prepare.reset_mock()
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet1['subnet']['id']})
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self.assertEqual(3, mock_prepare.call_count)
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expected = [mock.call(server=self.l3_agent['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=self.l3_agent_2['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=HOST1,
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topic=topics.L3_AGENT,
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version='1.1')]
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mock_prepare.assert_has_calls(expected, any_order=True)
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mock_prepare.reset_mock()
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet2['subnet']['id']})
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self.assertEqual(4, mock_prepare.call_count)
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expected = [mock.call(server=self.l3_agent['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=self.l3_agent_2['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=HOST1,
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=HOST2,
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topic=topics.L3_AGENT,
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version='1.1')]
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mock_prepare.assert_has_calls(expected, any_order=True)
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mock_prepare.reset_mock()
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet3['subnet']['id']})
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# there are no dvr serviceable ports on HOST3, so notification
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# goes to the same hosts
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self.assertEqual(4, mock_prepare.call_count)
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expected = [mock.call(server=self.l3_agent['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=self.l3_agent_2['host'],
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=HOST1,
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topic=topics.L3_AGENT,
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version='1.1'),
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mock.call(server=HOST2,
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topic=topics.L3_AGENT,
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version='1.1')]
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mock_prepare.assert_has_calls(expected, any_order=True)
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def test_router_is_not_removed_from_snat_agent_on_interface_removal(self):
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"""Check that dvr router is not removed from dvr_snat l3 agents
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on router interface removal
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"""
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router = self._create_router(distributed=True, ha=True)
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kwargs = {'arg_list': (external_net.EXTERNAL,),
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external_net.EXTERNAL: True}
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with self.subnet() as subnet, \
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self.network(**kwargs) as ext_net, \
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self.subnet(network=ext_net, cidr='20.0.0.0/24'):
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gw_info = {'network_id': ext_net['network']['id']}
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self.l3_plugin.update_router(
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self.context, router['id'],
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{'router': {l3.EXTERNAL_GW_INFO: gw_info}})
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet['subnet']['id']})
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self._assert_router_is_hosted_on_both_dvr_snat_agents(router)
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with mock.patch.object(self.l3_plugin,
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'_l3_rpc_notifier') as l3_notifier:
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self.l3_plugin.remove_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet['subnet']['id']})
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self._assert_router_is_hosted_on_both_dvr_snat_agents(router)
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self.assertFalse(l3_notifier.router_removed_from_agent.called)
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def test_router_is_not_removed_from_snat_agent_on_dhcp_port_deletion(self):
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"""Check that dvr router is not removed from l3 agent hosting
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SNAT for it on DHCP port removal
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"""
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router = self._create_router(distributed=True, ha=True)
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kwargs = {'arg_list': (external_net.EXTERNAL,),
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external_net.EXTERNAL: True}
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with self.network(**kwargs) as ext_net, \
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self.subnet(network=ext_net), \
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self.subnet(cidr='20.0.0.0/24') as subnet, \
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self.port(subnet=subnet,
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device_owner=constants.DEVICE_OWNER_DHCP) as port:
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self.core_plugin.update_port(
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self.context, port['port']['id'],
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{'port': {'binding:host_id': self.l3_agent['host']}})
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gw_info = {'network_id': ext_net['network']['id']}
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self.l3_plugin.update_router(
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self.context, router['id'],
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{'router': {l3.EXTERNAL_GW_INFO: gw_info}})
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet['subnet']['id']})
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# router should be scheduled to both dvr_snat l3 agents
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self._assert_router_is_hosted_on_both_dvr_snat_agents(router)
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notifier = self.l3_plugin.agent_notifiers[
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constants.AGENT_TYPE_L3]
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with mock.patch.object(
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notifier, 'router_removed_from_agent',
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side_effect=Exception("BOOOOOOM!")) as remove_mock:
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self._delete('ports', port['port']['id'])
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# now when port is deleted the router still has external
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# gateway and should still be scheduled to the snat agent
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remove_mock.assert_not_called()
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self._assert_router_is_hosted_on_both_dvr_snat_agents(router)
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def _get_ha_interface_list_for_router(self, router):
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return self.l3_plugin.get_ha_router_port_bindings(self.context,
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[router['id']])
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def _delete_router(self, router):
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self.l3_plugin.delete_router(self.context, router['id'])
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def _check_dvr_ha_interfaces_presence(self, rtr, int_cnt):
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self.assertEqual(int_cnt,
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len(self._get_ha_interface_list_for_router(rtr)))
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def _create_external_network(self):
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kwargs = {'arg_list': (external_net.EXTERNAL,),
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external_net.EXTERNAL: True}
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ext_net = self._make_network(self.fmt, 'ext_net', True, **kwargs)
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self._make_subnet(
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self.fmt, ext_net, '10.0.0.1', '10.0.0.0/24',
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ip_version=4, enable_dhcp=True)
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self._make_subnet(
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self.fmt, ext_net, '2001:db8::1', '2001:db8::/64',
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ip_version=6, enable_dhcp=True)
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return ext_net
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def _set_external_gateway(self, router, ext_net):
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gw_info = {'network_id': ext_net['network']['id']}
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self.l3_plugin.update_router(
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self.context, router['id'],
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{'router': {l3.EXTERNAL_GW_INFO: gw_info}})
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def _clear_external_gateway(self, router):
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self.l3_plugin.update_router(
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self.context, router['id'],
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{'router': {l3.EXTERNAL_GW_INFO: {}}})
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def _remove_interface_from_router(self, router, subnet):
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self.l3_plugin.remove_router_interface(
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self.context, router['id'],
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{'subnet_id': subnet['subnet']['id']})
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def _check_snat_external_gateway_presence(self, ext_net, router, gw_count):
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ext_net_id = ext_net['network']['id']
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gw_port = (self.l3_plugin._core_plugin.
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_get_router_gw_ports_by_network(self.context, ext_net_id))
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self.assertEqual(gw_count, len(gw_port))
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if gw_count > 1:
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self.assertEqual(router['id'], gw_port[0]['device_id'])
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def _check_snat_internal_gateways_presence(self, router, subnet, int_cnt):
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snat_router_intfs = self.l3_plugin._get_snat_sync_interfaces(
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self.context, [router['id']])
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if int_cnt == 0:
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self.assertEqual(0, len(snat_router_intfs))
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else:
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snat_interfaces = snat_router_intfs[router['id']]
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self.assertEqual(1, len(snat_interfaces))
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self.assertEqual(subnet['subnet']['id'],
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snat_interfaces[0]['fixed_ips'][0]['subnet_id'])
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def _check_internal_subnet_interface_presence(self, router, subnet,
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int_cnt):
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router_ints = self.l3_plugin._get_sync_interfaces(
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self.context, [router['id']],
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device_owners=constants.ROUTER_INTERFACE_OWNERS)
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self.assertEqual(int_cnt, len(router_ints))
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if int_cnt > 1:
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self.assertEqual(subnet['subnet']['id'],
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router_ints[0]['fixed_ips'][0]['subnet_id'])
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def _add_internal_subnet_to_router(self, router):
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int_net = self._make_network(self.fmt, 'int_net', True)
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int_subnet = self._make_subnet(
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self.fmt, int_net, '10.1.0.1', '10.1.0.0/24', enable_dhcp=True)
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self.l3_plugin.add_router_interface(
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self.context, router['id'],
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{'subnet_id': int_subnet['subnet']['id']})
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return int_subnet
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def _create_dvrha_router(self):
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router = self._create_router(distributed=True, ha=True)
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self.assertTrue(router['distributed'])
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self.assertTrue(router['ha'])
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return router
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def test_dvr_ha_router_create_attach_internal_external_detach_delete(self):
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"""DVRHA Attach internal subnet followed by attach external"""
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# create router
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router = self._create_dvrha_router()
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self._check_dvr_ha_interfaces_presence(router, 2)
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# add subnet interface to router
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int_subnet = self._add_internal_subnet_to_router(router)
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self._check_internal_subnet_interface_presence(router, int_subnet, 1)
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# set router external gateway
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ext_net = self._create_external_network()
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self._set_external_gateway(router, ext_net)
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self._check_dvr_ha_interfaces_presence(router, 2)
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self._check_snat_external_gateway_presence(ext_net, router, 1)
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self._check_internal_subnet_interface_presence(router, int_subnet, 1)
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self._check_snat_internal_gateways_presence(router, int_subnet, 1)
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# clear router external gateway
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self._clear_external_gateway(router)
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self._check_dvr_ha_interfaces_presence(router, 2)
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self._check_snat_external_gateway_presence(ext_net, router, 0)
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self._check_internal_subnet_interface_presence(router, int_subnet, 1)
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self._check_snat_internal_gateways_presence(router, int_subnet, 0)
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# remove subnet interface from router
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self._remove_interface_from_router(router, int_subnet)
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self._check_internal_subnet_interface_presence(router, int_subnet, 0)
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# delete router
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self._delete_router(router)
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self._check_dvr_ha_interfaces_presence(router, 0)
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def test_get_device_owner_centralized(self):
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self.skipTest('Valid for DVR-only routers')
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def test_update_router_db_centralized_to_distributed(self):
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self.skipTest('Valid for DVR-only routers')
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def test__get_router_ids_for_agent(self):
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self.skipTest('Valid for DVR-only routers')
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def test_router_auto_scheduling(self):
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self.skipTest('Valid for DVR-only routers')
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