590 lines
24 KiB
Python
590 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012, Nicira, 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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# @author: Dan Wendlandt, Nicira, Inc.
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import mock
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import testtools
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from neutron.agent.linux import ovs_lib
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from neutron.agent.linux import utils
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from neutron.openstack.common import jsonutils
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from neutron.openstack.common import uuidutils
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from neutron.tests import base
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from neutron.tests import tools
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class TestBaseOVS(base.BaseTestCase):
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def setUp(self):
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super(TestBaseOVS, self).setUp()
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self.root_helper = 'sudo'
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self.ovs = ovs_lib.BaseOVS(self.root_helper)
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self.br_name = 'bridge1'
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def test_add_bridge(self):
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with mock.patch.object(self.ovs, 'run_vsctl') as mock_vsctl:
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bridge = self.ovs.add_bridge(self.br_name)
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mock_vsctl.assert_called_with(["--", "--may-exist",
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"add-br", self.br_name])
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self.assertEqual(bridge.br_name, self.br_name)
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self.assertEqual(bridge.root_helper, self.ovs.root_helper)
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def test_delete_bridge(self):
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with mock.patch.object(self.ovs, 'run_vsctl') as mock_vsctl:
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self.ovs.delete_bridge(self.br_name)
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mock_vsctl.assert_called_with(["--", "--if-exists", "del-br",
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self.br_name])
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def test_bridge_exists_returns_true(self):
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with mock.patch.object(self.ovs, 'run_vsctl') as mock_vsctl:
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self.assertTrue(self.ovs.bridge_exists(self.br_name))
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mock_vsctl.assert_called_with(['br-exists', self.br_name],
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check_error=True)
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def test_bridge_exists_returns_false_for_exit_code_2(self):
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with mock.patch.object(self.ovs, 'run_vsctl',
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side_effect=RuntimeError('Exit code: 2\n')):
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self.assertFalse(self.ovs.bridge_exists('bridge1'))
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def test_bridge_exists_raises_unknown_exception(self):
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with mock.patch.object(self.ovs, 'run_vsctl',
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side_effect=RuntimeError()):
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with testtools.ExpectedException(RuntimeError):
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self.ovs.bridge_exists('bridge1')
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def test_get_bridge_name_for_port_name_returns_bridge_for_valid_port(self):
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port_name = 'bar'
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with mock.patch.object(self.ovs, 'run_vsctl',
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return_value=self.br_name) as mock_vsctl:
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bridge = self.ovs.get_bridge_name_for_port_name(port_name)
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self.assertEqual(bridge, self.br_name)
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mock_vsctl.assert_called_with(['port-to-br', port_name],
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check_error=True)
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def test_get_bridge_name_for_port_name_returns_none_for_exit_code_1(self):
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with mock.patch.object(self.ovs, 'run_vsctl',
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side_effect=RuntimeError('Exit code: 1\n')):
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self.assertFalse(self.ovs.get_bridge_name_for_port_name('bridge1'))
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def test_get_bridge_name_for_port_name_raises_unknown_exception(self):
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with mock.patch.object(self.ovs, 'run_vsctl',
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side_effect=RuntimeError()):
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with testtools.ExpectedException(RuntimeError):
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self.ovs.get_bridge_name_for_port_name('bridge1')
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def _test_port_exists(self, br_name, result):
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with mock.patch.object(self.ovs,
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'get_bridge_name_for_port_name',
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return_value=br_name):
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self.assertEqual(self.ovs.port_exists('bar'), result)
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def test_port_exists_returns_true_for_bridge_name(self):
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self._test_port_exists(self.br_name, True)
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def test_port_exists_returns_false_for_none(self):
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self._test_port_exists(None, False)
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class OVS_Lib_Test(base.BaseTestCase):
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"""A test suite to exercise the OVS libraries shared by Neutron agents.
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Note: these tests do not actually execute ovs-* utilities, and thus
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can run on any system. That does, however, limit their scope.
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"""
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def setUp(self):
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super(OVS_Lib_Test, self).setUp()
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self.BR_NAME = "br-int"
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self.TO = "--timeout=2"
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self.root_helper = 'sudo'
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self.br = ovs_lib.OVSBridge(self.BR_NAME, self.root_helper)
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self.execute = mock.patch.object(utils, "execute").start()
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self.addCleanup(mock.patch.stopall)
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def test_vifport(self):
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"""Create and stringify vif port, confirm no exceptions."""
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pname = "vif1.0"
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ofport = 5
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vif_id = uuidutils.generate_uuid()
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mac = "ca:fe:de:ad:be:ef"
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# test __init__
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port = ovs_lib.VifPort(pname, ofport, vif_id, mac, self.br)
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self.assertEqual(port.port_name, pname)
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self.assertEqual(port.ofport, ofport)
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self.assertEqual(port.vif_id, vif_id)
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self.assertEqual(port.vif_mac, mac)
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self.assertEqual(port.switch.br_name, self.BR_NAME)
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# test __str__
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str(port)
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def test_create(self):
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self.br.add_bridge(self.BR_NAME)
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self.br.create()
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def test_destroy(self):
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self.br.delete_bridge(self.BR_NAME)
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self.br.destroy()
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def test_reset_bridge(self):
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self.br.destroy()
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self.br.create()
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self.br.reset_bridge()
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def test_delete_port(self):
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pname = "tap5"
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self.br.delete_port(pname)
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self.execute.assert_called_once_with(
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["ovs-vsctl", self.TO, "--", "--if-exists",
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"del-port", self.BR_NAME, pname],
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root_helper=self.root_helper)
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def test_add_flow(self):
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ofport = "99"
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vid = 4000
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lsw_id = 18
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cidr = '192.168.1.0/24'
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self.br.add_flow(priority=2, dl_src="ca:fe:de:ad:be:ef",
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actions="strip_vlan,output:0")
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self.br.add_flow(priority=1, actions="normal")
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self.br.add_flow(priority=2, actions="drop")
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self.br.add_flow(priority=2, in_port=ofport, actions="drop")
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self.br.add_flow(priority=4, in_port=ofport, dl_vlan=vid,
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actions="strip_vlan,set_tunnel:%s,normal" %
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(lsw_id))
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self.br.add_flow(priority=3, tun_id=lsw_id,
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actions="mod_vlan_vid:%s,output:%s" %
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(vid, ofport))
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self.br.add_flow(priority=4, proto='arp', nw_src=cidr, actions='drop')
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expected_calls = [
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=2,dl_src=ca:fe:de:ad:be:ef"
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",actions=strip_vlan,output:0"],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=1,actions=normal"],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=2,actions=drop"],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=2,in_port=%s,actions=drop" % ofport],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=4,in_port=%s,dl_vlan=%s,"
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"actions=strip_vlan,set_tunnel:%s,normal"
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% (ofport, vid, lsw_id)],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=3,tun_id=%s,actions="
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"mod_vlan_vid:%s,output:%s"
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% (lsw_id, vid, ofport)],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "add-flow", self.BR_NAME,
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"hard_timeout=0,idle_timeout=0,"
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"priority=4,arp,nw_src=%s,actions=drop" % cidr],
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process_input=None, root_helper=self.root_helper),
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]
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self.execute.assert_has_calls(expected_calls)
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def test_get_port_ofport(self):
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pname = "tap99"
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ofport = "6"
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self.execute.return_value = ofport
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self.assertEqual(self.br.get_port_ofport(pname), ofport)
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self.execute.assert_called_once_with(
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["ovs-vsctl", self.TO, "get", "Interface", pname, "ofport"],
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root_helper=self.root_helper)
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def test_get_datapath_id(self):
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datapath_id = '"0000b67f4fbcc149"'
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self.execute.return_value = datapath_id
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self.assertEqual(self.br.get_datapath_id(), datapath_id.strip('"'))
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self.execute.assert_called_once_with(
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["ovs-vsctl", self.TO, "get",
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"Bridge", self.BR_NAME, "datapath_id"],
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root_helper=self.root_helper)
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def test_count_flows(self):
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self.execute.return_value = 'ignore\nflow-1\n'
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# counts the number of flows as total lines of output - 2
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self.assertEqual(self.br.count_flows(), 1)
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self.execute.assert_called_once_with(
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["ovs-ofctl", "dump-flows", self.BR_NAME],
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root_helper=self.root_helper,
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process_input=None)
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def test_delete_flow(self):
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ofport = "5"
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lsw_id = 40
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vid = 39
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self.br.delete_flows(in_port=ofport)
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self.br.delete_flows(tun_id=lsw_id)
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self.br.delete_flows(dl_vlan=vid)
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expected_calls = [
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mock.call(["ovs-ofctl", "del-flows", self.BR_NAME,
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"in_port=" + ofport],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "del-flows", self.BR_NAME,
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"tun_id=%s" % lsw_id],
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process_input=None, root_helper=self.root_helper),
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mock.call(["ovs-ofctl", "del-flows", self.BR_NAME,
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"dl_vlan=%s" % vid],
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process_input=None, root_helper=self.root_helper),
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]
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self.execute.assert_has_calls(expected_calls)
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def test_defer_apply_flows(self):
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add_mod_flow = mock.patch.object(self.br,
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'add_or_mod_flow_str').start()
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add_mod_flow.side_effect = ['added_flow_1', 'added_flow_2']
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flow_expr = mock.patch.object(self.br, '_build_flow_expr_arr').start()
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flow_expr.return_value = ['deleted_flow_1']
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run_ofctl = mock.patch.object(self.br, 'run_ofctl').start()
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self.br.defer_apply_on()
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self.br.add_flow(flow='added_flow_1')
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self.br.defer_apply_on()
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self.br.add_flow(flow='added_flow_2')
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self.br.delete_flows(flow='deleted_flow_1')
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self.br.defer_apply_off()
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add_mod_flow.assert_has_calls([
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mock.call(flow='added_flow_1'),
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mock.call(flow='added_flow_2')
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])
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flow_expr.assert_called_once_with(delete=True, flow='deleted_flow_1')
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run_ofctl.assert_has_calls([
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mock.call('add-flows', ['-'], 'added_flow_1\nadded_flow_2\n'),
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mock.call('del-flows', ['-'], 'deleted_flow_1\n')
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])
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def test_add_tunnel_port(self):
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pname = "tap99"
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local_ip = "1.1.1.1"
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remote_ip = "9.9.9.9"
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ofport = "6"
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# Each element is a tuple of (expected mock call, return_value)
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expected_calls_and_values = [
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(mock.call(["ovs-vsctl", self.TO, '--', "--may-exist", "add-port",
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self.BR_NAME, pname], root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "type=gre"], root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "options:remote_ip=" + remote_ip],
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root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "options:local_ip=" + local_ip],
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root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "options:in_key=flow"],
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root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "options:out_key=flow"],
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root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "get",
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"Interface", pname, "ofport"],
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root_helper=self.root_helper),
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ofport),
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]
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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self.assertEqual(
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self.br.add_tunnel_port(pname, remote_ip, local_ip),
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ofport)
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def test_add_patch_port(self):
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pname = "tap99"
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peer = "bar10"
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ofport = "6"
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# Each element is a tuple of (expected mock call, return_value)
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expected_calls_and_values = [
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(mock.call(["ovs-vsctl", self.TO, "add-port",
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self.BR_NAME, pname], root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set", "Interface",
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pname, "type=patch"], root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "set",
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"Interface", pname, "options:peer=" + peer],
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root_helper=self.root_helper),
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None),
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(mock.call(["ovs-vsctl", self.TO, "get",
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"Interface", pname, "ofport"],
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root_helper=self.root_helper),
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ofport)
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]
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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self.assertEqual(self.br.add_patch_port(pname, peer), ofport)
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def _test_get_vif_ports(self, is_xen=False):
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pname = "tap99"
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ofport = "6"
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vif_id = uuidutils.generate_uuid()
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mac = "ca:fe:de:ad:be:ef"
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if is_xen:
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external_ids = ('{xs-vif-uuid="%s", attached-mac="%s"}'
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% (vif_id, mac))
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else:
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external_ids = ('{iface-id="%s", attached-mac="%s"}'
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% (vif_id, mac))
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# Each element is a tuple of (expected mock call, return_value)
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expected_calls_and_values = [
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(mock.call(["ovs-vsctl", self.TO, "list-ports", self.BR_NAME],
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root_helper=self.root_helper),
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"%s\n" % pname),
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(mock.call(["ovs-vsctl", self.TO, "get",
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"Interface", pname, "external_ids"],
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root_helper=self.root_helper),
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external_ids),
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(mock.call(["ovs-vsctl", self.TO, "get",
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"Interface", pname, "ofport"],
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root_helper=self.root_helper),
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ofport),
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]
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if is_xen:
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expected_calls_and_values.append(
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(mock.call(["xe", "vif-param-get", "param-name=other-config",
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"param-key=nicira-iface-id", "uuid=" + vif_id],
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root_helper=self.root_helper),
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vif_id)
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)
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tools.setup_mock_calls(self.execute, expected_calls_and_values)
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ports = self.br.get_vif_ports()
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self.assertEqual(1, len(ports))
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self.assertEqual(ports[0].port_name, pname)
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self.assertEqual(ports[0].ofport, ofport)
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self.assertEqual(ports[0].vif_id, vif_id)
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self.assertEqual(ports[0].vif_mac, mac)
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self.assertEqual(ports[0].switch.br_name, self.BR_NAME)
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tools.verify_mock_calls(self.execute, expected_calls_and_values)
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def _encode_ovs_json(self, headings, data):
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# See man ovs-vsctl(8) for the encoding details.
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r = {"data": [],
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"headings": headings}
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for row in data:
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ovs_row = []
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r["data"].append(ovs_row)
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for cell in row:
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if isinstance(cell, str):
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ovs_row.append(cell)
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elif isinstance(cell, dict):
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ovs_row.append(["map", cell.items()])
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else:
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raise TypeError('%r not str or dict' % type(cell))
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return jsonutils.dumps(r)
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def _test_get_vif_port_set(self, is_xen):
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if is_xen:
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id_key = 'xs-vif-uuid'
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else:
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id_key = 'iface-id'
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headings = ['name', 'external_ids']
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data = [
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# A vif port on this bridge:
|
|
['tap99', {id_key: 'tap99id', 'attached-mac': 'tap99mac'}],
|
|
# A vif port on another bridge:
|
|
['tap88', {id_key: 'tap88id', 'attached-mac': 'tap88id'}],
|
|
# Non-vif port on this bridge:
|
|
['tun22', {}],
|
|
]
|
|
|
|
# Each element is a tuple of (expected mock call, return_value)
|
|
expected_calls_and_values = [
|
|
(mock.call(["ovs-vsctl", self.TO, "list-ports", self.BR_NAME],
|
|
root_helper=self.root_helper),
|
|
'tap99\ntun22'),
|
|
(mock.call(["ovs-vsctl", self.TO, "--format=json",
|
|
"--", "--columns=name,external_ids",
|
|
"list", "Interface"],
|
|
root_helper=self.root_helper),
|
|
self._encode_ovs_json(headings, data)),
|
|
]
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
if is_xen:
|
|
get_xapi_iface_id = mock.patch.object(self.br,
|
|
'get_xapi_iface_id').start()
|
|
get_xapi_iface_id.return_value = 'tap99id'
|
|
|
|
port_set = self.br.get_vif_port_set()
|
|
self.assertEqual(set(['tap99id']), port_set)
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
if is_xen:
|
|
get_xapi_iface_id.assert_called_once_with('tap99id')
|
|
|
|
def test_get_vif_ports_nonxen(self):
|
|
self._test_get_vif_ports(False)
|
|
|
|
def test_get_vif_ports_xen(self):
|
|
self._test_get_vif_ports(True)
|
|
|
|
def test_get_vif_port_set_nonxen(self):
|
|
self._test_get_vif_port_set(False)
|
|
|
|
def test_get_vif_port_set_xen(self):
|
|
self._test_get_vif_port_set(True)
|
|
|
|
def test_get_vif_port_set_list_ports_error(self):
|
|
expected_calls_and_values = [
|
|
(mock.call(["ovs-vsctl", self.TO, "list-ports", self.BR_NAME],
|
|
root_helper=self.root_helper),
|
|
RuntimeError()),
|
|
(mock.call(["ovs-vsctl", self.TO, "--format=json",
|
|
"--", "--columns=name,external_ids",
|
|
"list", "Interface"],
|
|
root_helper=self.root_helper),
|
|
self._encode_ovs_json(['name', 'external_ids'], []))
|
|
]
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
self.assertEqual(set(), self.br.get_vif_port_set())
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_get_vif_port_set_list_interface_error(self):
|
|
expected_calls_and_values = [
|
|
(mock.call(["ovs-vsctl", self.TO, "list-ports", self.BR_NAME],
|
|
root_helper=self.root_helper),
|
|
'tap99\n'),
|
|
(mock.call(["ovs-vsctl", self.TO, "--format=json",
|
|
"--", "--columns=name,external_ids",
|
|
"list", "Interface"],
|
|
root_helper=self.root_helper),
|
|
RuntimeError()),
|
|
]
|
|
tools.setup_mock_calls(self.execute, expected_calls_and_values)
|
|
self.assertEqual(set(), self.br.get_vif_port_set())
|
|
tools.verify_mock_calls(self.execute, expected_calls_and_values)
|
|
|
|
def test_clear_db_attribute(self):
|
|
pname = "tap77"
|
|
self.br.clear_db_attribute("Port", pname, "tag")
|
|
self.execute.assert_called_once_with(
|
|
["ovs-vsctl", self.TO, "clear", "Port", pname, "tag"],
|
|
root_helper=self.root_helper)
|
|
|
|
def test_port_id_regex(self):
|
|
result = ('external_ids : {attached-mac="fa:16:3e:23:5b:f2",'
|
|
' iface-id="5c1321a7-c73f-4a77-95e6-9f86402e5c8f",'
|
|
' iface-status=active}\nname :'
|
|
' "dhc5c1321a7-c7"\nofport : 2\n')
|
|
match = self.br.re_id.search(result)
|
|
vif_mac = match.group('vif_mac')
|
|
vif_id = match.group('vif_id')
|
|
port_name = match.group('port_name')
|
|
ofport = int(match.group('ofport'))
|
|
self.assertEqual(vif_mac, 'fa:16:3e:23:5b:f2')
|
|
self.assertEqual(vif_id, '5c1321a7-c73f-4a77-95e6-9f86402e5c8f')
|
|
self.assertEqual(port_name, 'dhc5c1321a7-c7')
|
|
self.assertEqual(ofport, 2)
|
|
|
|
def test_iface_to_br(self):
|
|
iface = 'tap0'
|
|
br = 'br-int'
|
|
root_helper = 'sudo'
|
|
self.execute.return_value = 'br-int'
|
|
|
|
self.assertEqual(ovs_lib.get_bridge_for_iface(root_helper, iface), br)
|
|
self.execute.assert_called_once_with(
|
|
["ovs-vsctl", self.TO, "iface-to-br", iface],
|
|
root_helper=root_helper)
|
|
|
|
def test_iface_to_br_handles_ovs_vsctl_exception(self):
|
|
iface = 'tap0'
|
|
root_helper = 'sudo'
|
|
self.execute.side_effect = Exception
|
|
|
|
self.assertIsNone(ovs_lib.get_bridge_for_iface(root_helper, iface))
|
|
self.execute.assert_called_once_with(
|
|
["ovs-vsctl", self.TO, "iface-to-br", iface],
|
|
root_helper=root_helper)
|
|
|
|
def test_delete_all_ports(self):
|
|
with mock.patch.object(self.br, 'get_port_name_list',
|
|
return_value=['port1']) as get_port:
|
|
with mock.patch.object(self.br, 'delete_port') as delete_port:
|
|
self.br.delete_ports(all_ports=True)
|
|
get_port.assert_called_once_with()
|
|
delete_port.assert_called_once_with('port1')
|
|
|
|
def test_delete_neutron_ports(self):
|
|
port1 = ovs_lib.VifPort('tap1234', 1, uuidutils.generate_uuid(),
|
|
'ca:fe:de:ad:be:ef', 'br')
|
|
port2 = ovs_lib.VifPort('tap5678', 2, uuidutils.generate_uuid(),
|
|
'ca:ee:de:ad:be:ef', 'br')
|
|
with mock.patch.object(self.br, 'get_vif_ports',
|
|
return_value=[port1, port2]) as get_ports:
|
|
with mock.patch.object(self.br, 'delete_port') as delete_port:
|
|
self.br.delete_ports(all_ports=False)
|
|
get_ports.assert_called_once_with()
|
|
delete_port.assert_has_calls([
|
|
mock.call('tap1234'),
|
|
mock.call('tap5678')
|
|
])
|
|
|
|
def test_get_bridges(self):
|
|
bridges = ['br-int', 'br-ex']
|
|
root_helper = 'sudo'
|
|
self.execute.return_value = 'br-int\nbr-ex\n'
|
|
|
|
self.assertEqual(ovs_lib.get_bridges(root_helper), bridges)
|
|
self.execute.assert_called_once_with(
|
|
["ovs-vsctl", self.TO, "list-br"],
|
|
root_helper=root_helper)
|
|
|
|
def test_get_local_port_mac_succeeds(self):
|
|
with mock.patch('neutron.agent.linux.ip_lib.IpLinkCommand',
|
|
return_value=mock.Mock(address='foo')):
|
|
self.assertEqual('foo', self.br.get_local_port_mac())
|
|
|
|
def test_get_local_port_mac_raises_exception_for_missing_mac(self):
|
|
with mock.patch('neutron.agent.linux.ip_lib.IpLinkCommand',
|
|
return_value=mock.Mock(address=None)):
|
|
with testtools.ExpectedException(Exception):
|
|
self.br.get_local_port_mac()
|