410 lines
18 KiB
Python
410 lines
18 KiB
Python
# Copyright (c) 2015 Red Hat, Inc.
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# Copyright (c) 2015 SUSE Linux Products GmbH
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# All Rights Reserved.
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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 random
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import eventlet
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import mock
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from neutron_lib import constants as n_const
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from neutron_lib.utils import net
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from oslo_config import cfg
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from oslo_utils import uuidutils
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from neutron.agent.common import ovs_lib
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from neutron.agent.l2 import l2_agent_extensions_manager as ext_manager
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from neutron.agent.linux import interface
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from neutron.agent.linux import polling
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from neutron.common import utils
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from neutron.conf.agent import common as agent_config
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from neutron.conf import common as common_config
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from neutron.conf.plugins.ml2.drivers import agent
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from neutron.conf.plugins.ml2.drivers import ovs_conf
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from neutron.plugins.ml2.drivers.openvswitch.agent.common import constants
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from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
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import br_int
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from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
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import br_phys
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from neutron.plugins.ml2.drivers.openvswitch.agent.openflow.ovs_ofctl \
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import br_tun
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from neutron.plugins.ml2.drivers.openvswitch.agent import ovs_neutron_agent \
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as ovs_agent
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from neutron.tests.common import net_helpers
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from neutron.tests.functional.agent.linux import base
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class OVSAgentTestFramework(base.BaseOVSLinuxTestCase):
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def setUp(self):
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super(OVSAgentTestFramework, self).setUp()
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agent_rpc = ('neutron.plugins.ml2.drivers.openvswitch.agent.'
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'ovs_neutron_agent.OVSPluginApi')
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mock.patch(agent_rpc).start()
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mock.patch('neutron.agent.rpc.PluginReportStateAPI').start()
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self.br_int = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
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prefix='br-int')
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self.br_tun = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
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prefix='br-tun')
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self.br_phys = utils.get_rand_name(n_const.DEVICE_NAME_MAX_LEN,
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prefix='br-phys')
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patch_name_len = n_const.DEVICE_NAME_MAX_LEN - len("-patch-tun")
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self.patch_tun = "%s-patch-tun" % self.br_int[patch_name_len:]
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self.patch_int = "%s-patch-int" % self.br_tun[patch_name_len:]
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self.ovs = ovs_lib.BaseOVS()
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self.config = self._configure_agent()
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self.driver = interface.OVSInterfaceDriver(self.config)
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self.namespace = self.useFixture(net_helpers.NamespaceFixture()).name
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def _get_config_opts(self):
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config = cfg.ConfigOpts()
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config.register_opts(common_config.core_opts)
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agent.register_agent_opts(config)
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ovs_conf.register_ovs_agent_opts(config)
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agent_config.register_interface_opts(config)
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agent_config.register_interface_driver_opts_helper(config)
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agent_config.register_agent_state_opts_helper(config)
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ext_manager.register_opts(config)
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return config
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def _configure_agent(self):
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config = self._get_config_opts()
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config.set_override(
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'interface_driver',
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'neutron.agent.linux.interface.OVSInterfaceDriver')
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config.set_override('integration_bridge', self.br_int, "OVS")
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config.set_override('ovs_integration_bridge', self.br_int)
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config.set_override('tunnel_bridge', self.br_tun, "OVS")
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config.set_override('int_peer_patch_port', self.patch_tun, "OVS")
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config.set_override('tun_peer_patch_port', self.patch_int, "OVS")
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config.set_override('host', 'ovs-agent')
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return config
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def _bridge_classes(self):
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return {
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'br_int': br_int.OVSIntegrationBridge,
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'br_phys': br_phys.OVSPhysicalBridge,
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'br_tun': br_tun.OVSTunnelBridge
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}
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def create_agent(self, create_tunnels=True, ancillary_bridge=None,
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local_ip='192.168.10.1'):
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if create_tunnels:
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tunnel_types = [n_const.TYPE_VXLAN]
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else:
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tunnel_types = None
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bridge_mappings = ['physnet:%s' % self.br_phys]
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self.config.set_override('tunnel_types', tunnel_types, "AGENT")
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self.config.set_override('polling_interval', 1, "AGENT")
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self.config.set_override('local_ip', local_ip, "OVS")
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self.config.set_override('bridge_mappings', bridge_mappings, "OVS")
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# Physical bridges should be created prior to running
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self._bridge_classes()['br_phys'](self.br_phys).create()
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ext_mgr = ext_manager.L2AgentExtensionsManager(self.config)
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agent = ovs_agent.OVSNeutronAgent(self._bridge_classes(),
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ext_mgr, self.config)
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self.addCleanup(self.ovs.delete_bridge, self.br_int)
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if tunnel_types:
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self.addCleanup(self.ovs.delete_bridge, self.br_tun)
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self.addCleanup(self.ovs.delete_bridge, self.br_phys)
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agent.sg_agent = mock.Mock()
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agent.ancillary_brs = []
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if ancillary_bridge:
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agent.ancillary_brs.append(ancillary_bridge)
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return agent
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def _mock_get_events(self, agent, polling_manager, ports):
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get_events = polling_manager.get_events
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p_ids = [p['id'] for p in ports]
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def filter_events():
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events = get_events()
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filtered_ports = []
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for dev in events['added']:
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iface_id = agent.int_br.portid_from_external_ids(
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dev.get('external_ids', []))
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if iface_id in p_ids:
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# if the event is not about a port that was created by
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# this test, we filter the event out. Since these tests are
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# not run in isolation processing all the events might make
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# some test fail ( e.g. the agent might keep resycing
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# because it keeps finding not ready ports that are created
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# by other tests)
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filtered_ports.append(dev)
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return {'added': filtered_ports, 'removed': events['removed']}
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polling_manager.get_events = mock.Mock(side_effect=filter_events)
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def stop_agent(self, agent, rpc_loop_thread):
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agent.run_daemon_loop = False
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rpc_loop_thread.wait()
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def start_agent(self, agent, ports=None, unplug_ports=None):
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if unplug_ports is None:
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unplug_ports = []
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if ports is None:
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ports = []
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self.setup_agent_rpc_mocks(agent, unplug_ports)
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polling_manager = polling.InterfacePollingMinimizer()
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self._mock_get_events(agent, polling_manager, ports)
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self.addCleanup(polling_manager.stop)
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polling_manager.start()
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utils.wait_until_true(
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polling_manager._monitor.is_active)
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agent.check_ovs_status = mock.Mock(
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return_value=constants.OVS_NORMAL)
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self.agent_thread = eventlet.spawn(agent.rpc_loop,
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polling_manager)
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self.addCleanup(self.stop_agent, agent, self.agent_thread)
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return polling_manager
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def _create_test_port_dict(self):
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return {'id': uuidutils.generate_uuid(),
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'mac_address': net.get_random_mac(
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'fa:16:3e:00:00:00'.split(':')),
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'fixed_ips': [{
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'ip_address': '10.%d.%d.%d' % (
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random.randint(3, 254),
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random.randint(3, 254),
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random.randint(3, 254))}],
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'vif_name': utils.get_rand_name(
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self.driver.DEV_NAME_LEN, self.driver.DEV_NAME_PREFIX)}
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def _create_test_network_dict(self):
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return {'id': uuidutils.generate_uuid(),
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'tenant_id': uuidutils.generate_uuid()}
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def _plug_ports(self, network, ports, agent,
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bridge=None, namespace=None):
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if namespace is None:
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namespace = self.namespace
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for port in ports:
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bridge = bridge or agent.int_br
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self.driver.plug(
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network.get('id'), port.get('id'), port.get('vif_name'),
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port.get('mac_address'),
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bridge.br_name, namespace=namespace)
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ip_cidrs = ["%s/8" % (port.get('fixed_ips')[0][
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'ip_address'])]
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self.driver.init_l3(port.get('vif_name'), ip_cidrs,
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namespace=namespace)
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def _unplug_ports(self, ports, agent):
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for port in ports:
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self.driver.unplug(
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port.get('vif_name'), agent.int_br.br_name, self.namespace)
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def _get_device_details(self, port, network):
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dev = {'device': port['id'],
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'port_id': port['id'],
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'network_id': network['id'],
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'network_type': network.get('network_type', 'vlan'),
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'physical_network': network.get('physical_network', 'physnet'),
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'segmentation_id': network.get('segmentation_id', 1),
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'fixed_ips': port['fixed_ips'],
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'device_owner': n_const.DEVICE_OWNER_COMPUTE_PREFIX,
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'admin_state_up': True}
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return dev
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def assert_bridge(self, br, exists=True):
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self.assertEqual(exists, self.ovs.bridge_exists(br))
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def assert_patch_ports(self, agent):
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def get_peer(port):
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return agent.int_br.db_get_val(
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'Interface', port, 'options', check_error=True)
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utils.wait_until_true(
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lambda: get_peer(self.patch_int) == {'peer': self.patch_tun})
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utils.wait_until_true(
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lambda: get_peer(self.patch_tun) == {'peer': self.patch_int})
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def assert_bridge_ports(self):
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for port in [self.patch_tun, self.patch_int]:
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self.assertTrue(self.ovs.port_exists(port))
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def assert_vlan_tags(self, ports, agent):
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for port in ports:
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res = agent.int_br.db_get_val('Port', port.get('vif_name'), 'tag')
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self.assertTrue(res)
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def _expected_plugin_rpc_call(self, call, expected_devices, is_up=True):
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"""Helper to check expected rpc call are received
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:param call: The call to check
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:param expected_devices: The device for which call is expected
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:param is_up: True if expected_devices are devices that are set up,
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False if expected_devices are devices that are set down
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"""
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if is_up:
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rpc_devices = [
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dev for args in call.call_args_list for dev in args[0][1]]
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else:
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rpc_devices = [
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dev for args in call.call_args_list for dev in args[0][2]]
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for dev in rpc_devices:
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if dev in expected_devices:
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expected_devices.remove(dev)
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# reset mock otherwise if the mock is called again the same call param
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# will be processed again
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call.reset_mock()
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return not expected_devices
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def create_test_ports(self, amount=3, **kwargs):
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ports = []
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for x in range(amount):
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ports.append(self._create_test_port_dict(**kwargs))
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return ports
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def _mock_update_device(self, context, devices_up, devices_down, agent_id,
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host=None, agent_restarted=False):
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dev_up = []
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dev_down = []
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for port in self.ports:
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if devices_up and port['id'] in devices_up:
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dev_up.append(port['id'])
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if devices_down and port['id'] in devices_down:
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dev_down.append({'device': port['id'], 'exists': True})
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return {'devices_up': dev_up,
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'failed_devices_up': [],
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'devices_down': dev_down,
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'failed_devices_down': []}
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def setup_agent_rpc_mocks(self, agent, unplug_ports):
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def mock_device_details(context, devices, agent_id, host=None):
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details = []
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for port in self.ports:
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if port['id'] in devices:
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dev = self._get_device_details(
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port, self.network)
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details.append(dev)
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ports_to_unplug = [x for x in unplug_ports if x['id'] in devices]
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if ports_to_unplug:
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self._unplug_ports(ports_to_unplug, self.agent)
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return {'devices': details, 'failed_devices': []}
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(agent.plugin_rpc.get_devices_details_list_and_failed_devices.
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side_effect) = mock_device_details
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agent.plugin_rpc.update_device_list.side_effect = (
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self._mock_update_device)
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def _prepare_resync_trigger(self, agent):
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def mock_device_raise_exception(context, devices_up, devices_down,
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agent_id, host=None):
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agent.plugin_rpc.update_device_list.side_effect = (
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self._mock_update_device)
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raise Exception('Exception to trigger resync')
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self.agent.plugin_rpc.update_device_list.side_effect = (
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mock_device_raise_exception)
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def _prepare_failed_dev_up_trigger(self, agent):
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def mock_failed_devices_up(context, devices_up, devices_down,
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agent_id, host=None,
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agent_restarted=False):
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failed_devices = []
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devices = list(devices_up)
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# first port fails
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if self.ports[0]['id'] in devices_up:
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# reassign side_effect so that next RPC call will succeed
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agent.plugin_rpc.update_device_list.side_effect = (
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self._mock_update_device)
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devices.remove(self.ports[0]['id'])
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failed_devices.append(self.ports[0]['id'])
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return {'devices_up': devices,
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'failed_devices_up': failed_devices,
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'devices_down': [],
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'failed_devices_down': []}
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self.agent.plugin_rpc.update_device_list.side_effect = (
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mock_failed_devices_up)
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def _prepare_failed_dev_down_trigger(self, agent):
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def mock_failed_devices_down(context, devices_up, devices_down,
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agent_id, host=None,
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agent_restarted=False):
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# first port fails
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failed_port_id = self.ports[0]['id']
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failed_devices_down = []
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dev_down = [
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{'device': p['id'], 'exists': True}
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for p in self.ports if p['id'] in devices_down and (
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p['id'] != failed_port_id)]
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# check if it's the call to set devices down and if the device
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# that is supposed to fail is in the call then modify the
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# side_effect so that next RPC call will succeed.
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if devices_down and failed_port_id in devices_down:
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agent.plugin_rpc.update_device_list.side_effect = (
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self._mock_update_device)
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failed_devices_down.append(failed_port_id)
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return {'devices_up': devices_up,
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'failed_devices_up': [],
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'devices_down': dev_down,
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'failed_devices_down': failed_devices_down}
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self.agent.plugin_rpc.update_device_list.side_effect = (
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mock_failed_devices_down)
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def wait_until_ports_state(self, ports, up, timeout=60):
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port_ids = [p['id'] for p in ports]
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utils.wait_until_true(
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lambda: self._expected_plugin_rpc_call(
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self.agent.plugin_rpc.update_device_list, port_ids, up),
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timeout=timeout)
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def setup_agent_and_ports(self, port_dicts, create_tunnels=True,
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ancillary_bridge=None,
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trigger_resync=False,
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failed_dev_up=False,
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failed_dev_down=False,
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network=None):
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self.ports = port_dicts
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self.agent = self.create_agent(create_tunnels=create_tunnels,
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ancillary_bridge=ancillary_bridge)
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self.polling_manager = self.start_agent(self.agent, ports=self.ports)
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self.network = network or self._create_test_network_dict()
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if trigger_resync:
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self._prepare_resync_trigger(self.agent)
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elif failed_dev_up:
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self._prepare_failed_dev_up_trigger(self.agent)
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elif failed_dev_down:
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self._prepare_failed_dev_down_trigger(self.agent)
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self._plug_ports(self.network, self.ports, self.agent,
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bridge=ancillary_bridge)
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def plug_ports_to_phys_br(self, network, ports, namespace=None):
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physical_network = network.get('physical_network', 'physnet')
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phys_segmentation_id = network.get('segmentation_id', None)
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network_type = network.get('network_type', 'flat')
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phys_br = self.agent.phys_brs[physical_network]
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self._plug_ports(network, ports, self.agent, bridge=phys_br,
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namespace=namespace)
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if network_type == 'flat':
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# NOTE(slaweq): for OVS implementations remove the DEAD VLAN tag
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# on ports that belongs to flat network. DEAD VLAN tag is added
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# to each newly created port. This is related to lp#1767422
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for port in ports:
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phys_br.clear_db_attribute("Port", port['vif_name'], "tag")
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elif phys_segmentation_id and network_type == 'vlan':
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for port in ports:
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phys_br.set_db_attribute(
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"Port", port['vif_name'], "tag", phys_segmentation_id)
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