Michael Still
f9a0c1917c
Move another generally useful utility method out of nova-net to somewhere more generic. Change-Id: I1bf7afecd2e8122492dcb2c21b26e5b72919e6b5 blueprint: remove-nova-network
96 lines
3.8 KiB
Python
96 lines
3.8 KiB
Python
# Copyright 2011 NTT
|
|
# 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 oslo_concurrency import processutils
|
|
|
|
from nova.network import linux_utils as net_utils
|
|
from nova import test
|
|
|
|
|
|
class NetUtilsTestCase(test.NoDBTestCase):
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_dev(self, mock_execute):
|
|
net_utils.create_tap_dev('tap42')
|
|
|
|
mock_execute.assert_has_calls([
|
|
mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
|
|
run_as_root=True, check_exit_code=[0, 2, 254]),
|
|
mock.call('ip', 'link', 'set', 'tap42', 'up',
|
|
run_as_root=True, check_exit_code=[0, 2, 254])
|
|
])
|
|
|
|
@mock.patch('os.path.exists', return_value=True)
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_skipped_when_exists(self, mock_execute, mock_exists):
|
|
net_utils.create_tap_dev('tap42')
|
|
|
|
mock_exists.assert_called_once_with('/sys/class/net/tap42')
|
|
mock_execute.assert_not_called()
|
|
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_dev_mac(self, mock_execute):
|
|
net_utils.create_tap_dev('tap42', '00:11:22:33:44:55')
|
|
|
|
mock_execute.assert_has_calls([
|
|
mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
|
|
run_as_root=True, check_exit_code=[0, 2, 254]),
|
|
mock.call('ip', 'link', 'set', 'tap42',
|
|
'address', '00:11:22:33:44:55',
|
|
run_as_root=True, check_exit_code=[0, 2, 254]),
|
|
mock.call('ip', 'link', 'set', 'tap42', 'up',
|
|
run_as_root=True, check_exit_code=[0, 2, 254])
|
|
])
|
|
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_dev_fallback_to_tunctl(self, mock_execute):
|
|
# ip failed, fall back to tunctl
|
|
mock_execute.side_effect = [processutils.ProcessExecutionError, 0, 0]
|
|
|
|
net_utils.create_tap_dev('tap42')
|
|
|
|
mock_execute.assert_has_calls([
|
|
mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
|
|
run_as_root=True, check_exit_code=[0, 2, 254]),
|
|
mock.call('tunctl', '-b', '-t', 'tap42',
|
|
run_as_root=True),
|
|
mock.call('ip', 'link', 'set', 'tap42', 'up',
|
|
run_as_root=True, check_exit_code=[0, 2, 254])
|
|
])
|
|
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_dev_multiqueue(self, mock_execute):
|
|
net_utils.create_tap_dev('tap42', multiqueue=True)
|
|
|
|
mock_execute.assert_has_calls([
|
|
mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
|
|
'multi_queue',
|
|
run_as_root=True, check_exit_code=[0, 2, 254]),
|
|
mock.call('ip', 'link', 'set', 'tap42', 'up',
|
|
run_as_root=True, check_exit_code=[0, 2, 254])
|
|
])
|
|
|
|
@mock.patch('nova.utils.execute')
|
|
def test_create_tap_dev_multiqueue_tunctl_raises(self, mock_execute):
|
|
# if creation of a tap by the means of ip command fails,
|
|
# create_tap_dev() will try to do that by the means of tunctl
|
|
mock_execute.side_effect = processutils.ProcessExecutionError
|
|
# but tunctl can't create multiqueue taps, so the failure is expected
|
|
self.assertRaises(processutils.ProcessExecutionError,
|
|
net_utils.create_tap_dev,
|
|
'tap42', multiqueue=True)
|