# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright (c) 2012 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. import mock from neutron.agent import netns_cleanup_util as util from neutron.tests import base class TestNetnsCleanup(base.BaseTestCase): def test_kill_dhcp(self, dhcp_active=True): conf = mock.Mock() conf.AGENT.root_helper = 'sudo', conf.dhcp_driver = 'driver' method_to_patch = 'neutron.openstack.common.importutils.import_object' with mock.patch(method_to_patch) as import_object: driver = mock.Mock() driver.active = dhcp_active import_object.return_value = driver util.kill_dhcp(conf, 'ns') import_object.called_once_with('driver', conf, mock.ANY, conf.AGENT.root_helper, mock.ANY) if dhcp_active: driver.assert_has_calls([mock.call.disable()]) else: self.assertFalse(driver.called) def test_kill_dhcp_no_active(self): self.test_kill_dhcp(False) def test_eligible_for_deletion_ns_not_uuid(self): ns = 'not_a_uuid' self.assertFalse(util.eligible_for_deletion(mock.Mock(), ns)) def _test_eligible_for_deletion_helper(self, prefix, force, is_empty, expected): ns = prefix + '6e322ac7-ab50-4f53-9cdc-d1d3c1164b6d' conf = mock.Mock() with mock.patch('neutron.agent.linux.ip_lib.IPWrapper') as ip_wrap: ip_wrap.return_value.namespace_is_empty.return_value = is_empty self.assertEqual(util.eligible_for_deletion(conf, ns, force), expected) expected_calls = [mock.call(conf.AGENT.root_helper, ns)] if not force: expected_calls.append(mock.call().namespace_is_empty()) ip_wrap.assert_has_calls(expected_calls) def test_eligible_for_deletion_empty(self): self._test_eligible_for_deletion_helper('qrouter-', False, True, True) def test_eligible_for_deletion_not_empty(self): self._test_eligible_for_deletion_helper('qdhcp-', False, False, False) def test_eligible_for_deletion_not_empty_forced(self): self._test_eligible_for_deletion_helper('qdhcp-', True, False, True) def test_unplug_device_regular_device(self): conf = mock.Mock() device = mock.Mock() util.unplug_device(conf, device) device.assert_has_calls([mock.call.link.delete()]) def test_unplug_device_ovs_port(self): conf = mock.Mock() conf.ovs_integration_bridge = 'br-int' device = mock.Mock() device.name = 'tap1' device.link.delete.side_effect = RuntimeError with mock.patch('neutron.agent.linux.ovs_lib.OVSBridge') as ovs_br_cls: br_patch = mock.patch( 'neutron.agent.linux.ovs_lib.get_bridge_for_iface') with br_patch as mock_get_bridge_for_iface: mock_get_bridge_for_iface.return_value = 'br-int' ovs_bridge = mock.Mock() ovs_br_cls.return_value = ovs_bridge util.unplug_device(conf, device) mock_get_bridge_for_iface.assert_called_once_with( conf.AGENT.root_helper, 'tap1') ovs_br_cls.called_once_with('br-int', conf.AGENT.root_helper) ovs_bridge.assert_has_calls( [mock.call.delete_port(device.name)]) def test_unplug_device_cannot_determine_bridge_port(self): conf = mock.Mock() conf.ovs_integration_bridge = 'br-int' device = mock.Mock() device.name = 'tap1' device.link.delete.side_effect = RuntimeError with mock.patch('neutron.agent.linux.ovs_lib.OVSBridge') as ovs_br_cls: br_patch = mock.patch( 'neutron.agent.linux.ovs_lib.get_bridge_for_iface') with br_patch as mock_get_bridge_for_iface: with mock.patch.object(util.LOG, 'debug') as debug: mock_get_bridge_for_iface.return_value = None ovs_bridge = mock.Mock() ovs_br_cls.return_value = ovs_bridge util.unplug_device(conf, device) mock_get_bridge_for_iface.assert_called_once_with( conf.AGENT.root_helper, 'tap1') self.assertEqual(ovs_br_cls.mock_calls, []) self.assertTrue(debug.called) def _test_destroy_namespace_helper(self, force, num_devices): ns = 'qrouter-6e322ac7-ab50-4f53-9cdc-d1d3c1164b6d' conf = mock.Mock() # conf.AGENT.root_helper = 'sudo' lo_device = mock.Mock() lo_device.name = 'lo' devices = [lo_device] while num_devices: dev = mock.Mock() dev.name = 'tap%d' % num_devices devices.append(dev) num_devices -= 1 with mock.patch('neutron.agent.linux.ip_lib.IPWrapper') as ip_wrap: ip_wrap.return_value.get_devices.return_value = devices ip_wrap.return_value.netns.exists.return_value = True with mock.patch.object(util, 'unplug_device') as unplug: with mock.patch.object(util, 'kill_dhcp') as kill_dhcp: util.destroy_namespace(conf, ns, force) expected = [mock.call(conf.AGENT.root_helper, ns)] if force: expected.extend([ mock.call().netns.exists(ns), mock.call().get_devices(exclude_loopback=True)]) self.assertTrue(kill_dhcp.called) unplug.assert_has_calls( [mock.call(conf, d) for d in devices[1:]]) expected.append(mock.call().garbage_collect_namespace()) ip_wrap.assert_has_calls(expected) def test_destroy_namespace_empty(self): self._test_destroy_namespace_helper(False, 0) def test_destroy_namespace_not_empty(self): self._test_destroy_namespace_helper(False, 1) def test_destroy_namespace_not_empty_forced(self): self._test_destroy_namespace_helper(True, 2) def test_destroy_namespace_exception(self): ns = 'qrouter-6e322ac7-ab50-4f53-9cdc-d1d3c1164b6d' conf = mock.Mock() conf.AGENT.root_helper = 'sudo' with mock.patch('neutron.agent.linux.ip_lib.IPWrapper') as ip_wrap: ip_wrap.side_effect = Exception() util.destroy_namespace(conf, ns) def test_main(self): namespaces = ['ns1', 'ns2'] with mock.patch('neutron.agent.linux.ip_lib.IPWrapper') as ip_wrap: ip_wrap.get_namespaces.return_value = namespaces with mock.patch('eventlet.sleep') as eventlet_sleep: conf = mock.Mock() conf.force = False methods_to_mock = dict( eligible_for_deletion=mock.DEFAULT, destroy_namespace=mock.DEFAULT, setup_conf=mock.DEFAULT) with mock.patch.multiple(util, **methods_to_mock) as mocks: mocks['eligible_for_deletion'].return_value = True mocks['setup_conf'].return_value = conf with mock.patch('neutron.common.config.setup_logging'): util.main() mocks['eligible_for_deletion'].assert_has_calls( [mock.call(conf, 'ns1', False), mock.call(conf, 'ns2', False)]) mocks['destroy_namespace'].assert_has_calls( [mock.call(conf, 'ns1', False), mock.call(conf, 'ns2', False)]) ip_wrap.assert_has_calls( [mock.call.get_namespaces(conf.AGENT.root_helper)]) eventlet_sleep.assert_called_once_with(2) def test_main_no_candidates(self): namespaces = ['ns1', 'ns2'] with mock.patch('neutron.agent.linux.ip_lib.IPWrapper') as ip_wrap: ip_wrap.get_namespaces.return_value = namespaces with mock.patch('eventlet.sleep') as eventlet_sleep: conf = mock.Mock() conf.force = False methods_to_mock = dict( eligible_for_deletion=mock.DEFAULT, destroy_namespace=mock.DEFAULT, setup_conf=mock.DEFAULT) with mock.patch.multiple(util, **methods_to_mock) as mocks: mocks['eligible_for_deletion'].return_value = False mocks['setup_conf'].return_value = conf with mock.patch('neutron.common.config.setup_logging'): util.main() ip_wrap.assert_has_calls( [mock.call.get_namespaces(conf.AGENT.root_helper)]) mocks['eligible_for_deletion'].assert_has_calls( [mock.call(conf, 'ns1', False), mock.call(conf, 'ns2', False)]) self.assertFalse(mocks['destroy_namespace'].called) self.assertFalse(eventlet_sleep.called)