nova-lxd/nova/tests/unit/virt/lxd/test_driver.py

1372 lines
49 KiB
Python

# Copyright 2016 Canonical Ltd
# 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 collections
import json
import eventlet
from oslo_config import cfg
import mock
from nova import context
from nova import exception
from nova import utils
from nova import test
from nova.compute import manager
from nova.compute import power_state
from nova.network import model as network_model
from nova.tests.unit import fake_instance
from pylxd import exceptions as lxdcore_exceptions
import six
from nova.virt.lxd import common
from nova.virt.lxd import driver
MockResponse = collections.namedtuple('Response', ['status_code'])
MockContainer = collections.namedtuple('Container', ['name'])
MockContainerState = collections.namedtuple(
'ContainerState', ['status', 'memory', 'status_code'])
_VIF = {
'devname': 'lol0', 'type': 'bridge', 'id': '0123456789abcdef',
'address': 'ca:fe:de:ad:be:ef'}
def fake_connection_info(volume, location, iqn, auth=False, transport=None):
dev_name = 'ip-%s-iscsi-%s-lun-1' % (location, iqn)
if transport is not None:
dev_name = 'pci-0000:00:00.0-' + dev_name
dev_path = '/dev/disk/by-path/%s' % (dev_name)
ret = {
'driver_volume_type': 'iscsi',
'data': {
'volume_id': volume['id'],
'target_portal': location,
'target_iqn': iqn,
'target_lun': 1,
'device_path': dev_path,
'qos_specs': {
'total_bytes_sec': '102400',
'read_iops_sec': '200',
}
}
}
if auth:
ret['data']['auth_method'] = 'CHAP'
ret['data']['auth_username'] = 'foo'
ret['data']['auth_password'] = 'bar'
return ret
class GetPowerStateTest(test.NoDBTestCase):
"""Tests for nova.virt.lxd.driver.LXDDriver."""
def test_running(self):
state = driver._get_power_state(100)
self.assertEqual(power_state.RUNNING, state)
def test_shutdown(self):
state = driver._get_power_state(102)
self.assertEqual(power_state.SHUTDOWN, state)
def test_nostate(self):
state = driver._get_power_state(105)
self.assertEqual(power_state.NOSTATE, state)
def test_crashed(self):
state = driver._get_power_state(108)
self.assertEqual(power_state.CRASHED, state)
def test_suspended(self):
state = driver._get_power_state(109)
self.assertEqual(power_state.SUSPENDED, state)
def test_unknown(self):
self.assertRaises(ValueError, driver._get_power_state, 69)
class LXDDriverTest(test.NoDBTestCase):
"""Tests for nova.virt.lxd.driver.LXDDriver."""
def setUp(self):
super(LXDDriverTest, self).setUp()
self.Client_patcher = mock.patch('nova.virt.lxd.driver.pylxd.Client')
self.Client = self.Client_patcher.start()
self.client = mock.Mock()
self.client.host_info = {
'environment': {
'storage': 'zfs',
}
}
self.Client.return_value = self.client
self.patchers = []
CONF_patcher = mock.patch('nova.virt.lxd.driver.CONF')
self.patchers.append(CONF_patcher)
self.CONF = CONF_patcher.start()
self.CONF.instances_path = '/path/to/instances'
self.CONF.my_ip = '0.0.0.0'
self.CONF.config_drive_format = 'iso9660'
# XXX: rockstar (03 Nov 2016) - This should be removed once
# everything is where it should live.
CONF2_patcher = mock.patch('nova.virt.lxd.driver.nova.conf.CONF')
self.patchers.append(CONF2_patcher)
self.CONF2 = CONF2_patcher.start()
self.CONF2.lxd.root_dir = '/lxd'
self.CONF2.instances_path = '/i'
# LXDDriver._after_reboot reads from the database and syncs container
# state. These tests can't read from the database.
after_reboot_patcher = mock.patch(
'nova.virt.lxd.driver.LXDDriver._after_reboot')
self.patchers.append(after_reboot_patcher)
self.after_reboot = after_reboot_patcher.start()
bdige_patcher = mock.patch(
'nova.virt.lxd.driver.driver.block_device_info_get_ephemerals')
self.patchers.append(bdige_patcher)
self.block_device_info_get_ephemerals = bdige_patcher.start()
self.block_device_info_get_ephemerals.return_value = []
vif_driver_patcher = mock.patch(
'nova.virt.lxd.driver.lxd_vif.LXDGenericVifDriver')
self.patchers.append(vif_driver_patcher)
self.LXDGenericVifDriver = vif_driver_patcher.start()
self.vif_driver = mock.Mock()
self.LXDGenericVifDriver.return_value = self.vif_driver
vif_gc_patcher = mock.patch('nova.virt.lxd.driver.lxd_vif.get_config')
self.patchers.append(vif_gc_patcher)
self.get_config = vif_gc_patcher.start()
self.get_config.return_value = {
'mac_address': '00:11:22:33:44:55', 'bridge': 'qbr0123456789a',
}
# NOTE: mock out fileutils to ensure that unit tests don't try
# to manipulate the filesystem (breaks in package builds).
driver.fileutils = mock.Mock()
def tearDown(self):
super(LXDDriverTest, self).tearDown()
self.Client_patcher.stop()
for patcher in self.patchers:
patcher.stop()
def test_init_host(self):
"""init_host initializes the pylxd Client."""
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
self.Client.assert_called_once_with()
self.assertEqual(self.client, lxd_driver.client)
def test_init_host_fail(self):
def side_effect():
raise lxdcore_exceptions.ClientConnectionFailed()
self.Client.side_effect = side_effect
self.Client.return_value = None
lxd_driver = driver.LXDDriver(None)
self.assertRaises(exception.HostNotFound, lxd_driver.init_host, None)
def test_get_info(self):
container = mock.Mock()
container.state.return_value = MockContainerState(
'Running', {'usage': 4000, 'usage_peak': 4500}, 100)
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
info = lxd_driver.get_info(instance)
self.assertEqual(power_state.RUNNING, info.state)
self.assertEqual(3, info.mem_kb)
self.assertEqual(4, info.max_mem_kb)
self.assertEqual(1, info.num_cpu)
self.assertEqual(0, info.cpu_time_ns)
def test_list_instances(self):
self.client.containers.all.return_value = [
MockContainer('mock-instance-1'),
MockContainer('mock-instance-2'),
]
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
instances = lxd_driver.list_instances()
self.assertEqual(['mock-instance-1', 'mock-instance-2'], instances)
@mock.patch('nova.virt.configdrive.required_by')
def test_spawn(self, configdrive, neutron_failure=None):
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
self.client.containers.get.side_effect = container_get
configdrive.return_value = False
container = mock.Mock()
self.client.containers.create.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
lxd_driver = driver.LXDDriver(virtapi)
lxd_driver.init_host(None)
# XXX: rockstar (6 Jul 2016) - There are a number of XXX comments
# related to these calls in spawn. They require some work before we
# can take out these mocks and follow the real codepaths.
lxd_driver.firewall_driver = mock.Mock()
lxd_driver.spawn(
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
self.vif_driver.plug.assert_called_once_with(
instance, network_info[0])
fd = lxd_driver.firewall_driver
fd.setup_basic_filtering.assert_called_once_with(
instance, network_info)
fd.apply_instance_filter.assert_called_once_with(
instance, network_info)
container.start.assert_called_once_with(wait=True)
def test_spawn_already_exists(self):
"""InstanceExists is raised if the container already exists."""
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
self.assertRaises(
exception.InstanceExists,
lxd_driver.spawn,
ctx, instance, image_meta, injected_files, admin_password,
None, None)
@mock.patch('nova.virt.configdrive.required_by')
def test_spawn_with_configdrive(self, configdrive):
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
self.client.containers.get.side_effect = container_get
configdrive.return_value = True
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
lxd_driver = driver.LXDDriver(virtapi)
lxd_driver.init_host(None)
# XXX: rockstar (6 Jul 2016) - There are a number of XXX comments
# related to these calls in spawn. They require some work before we
# can take out these mocks and follow the real codepaths.
lxd_driver.firewall_driver = mock.Mock()
lxd_driver._add_configdrive = mock.Mock()
lxd_driver.spawn(
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
self.vif_driver.plug.assert_called_once_with(
instance, network_info[0])
fd = lxd_driver.firewall_driver
fd.setup_basic_filtering.assert_called_once_with(
instance, network_info)
fd.apply_instance_filter.assert_called_once_with(
instance, network_info)
configdrive.assert_called_once_with(instance)
lxd_driver.client.profiles.get.assert_called_once_with(instance.name)
@mock.patch('nova.virt.configdrive.required_by')
def test_spawn_profile_fail(self, configdrive, neutron_failure=None):
"""Cleanup is called when profile creation fails."""
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
def profile_create(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(500))
self.client.containers.get.side_effect = container_get
self.client.profiles.create.side_effect = profile_create
configdrive.return_value = False
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
lxd_driver = driver.LXDDriver(virtapi)
lxd_driver.init_host(None)
lxd_driver.cleanup = mock.Mock()
self.assertRaises(
lxdcore_exceptions.LXDAPIException,
lxd_driver.spawn,
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
lxd_driver.cleanup.assert_called_once_with(
ctx, instance, network_info, block_device_info)
@mock.patch('nova.virt.configdrive.required_by')
def test_spawn_container_fail(self, configdrive, neutron_failure=None):
"""Cleanup is called when container creation fails."""
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
def container_create(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(500))
self.client.containers.get.side_effect = container_get
self.client.containers.create.side_effect = container_create
configdrive.return_value = False
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
lxd_driver = driver.LXDDriver(virtapi)
lxd_driver.init_host(None)
lxd_driver.cleanup = mock.Mock()
self.assertRaises(
lxdcore_exceptions.LXDAPIException,
lxd_driver.spawn,
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
lxd_driver.cleanup.assert_called_once_with(
ctx, instance, network_info, block_device_info)
def test_spawn_container_start_fail(self, neutron_failure=None):
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
def side_effect(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(200))
self.client.containers.get.side_effect = container_get
container = mock.Mock()
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
lxd_driver = driver.LXDDriver(virtapi)
lxd_driver.init_host(None)
lxd_driver.cleanup = mock.Mock()
lxd_driver.client.containers.create = mock.Mock(
side_effect=side_effect)
container.start.side_effect = side_effect
self.assertRaises(
lxdcore_exceptions.LXDAPIException,
lxd_driver.spawn,
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
lxd_driver.cleanup.assert_called_once_with(
ctx, instance, network_info, block_device_info)
def _test_spawn_instance_with_network_events(self, neutron_failure=None):
generated_events = []
def wait_timeout():
event = mock.MagicMock()
if neutron_failure == 'timeout':
raise eventlet.timeout.Timeout()
elif neutron_failure == 'error':
event.status = 'failed'
else:
event.status = 'completed'
return event
def fake_prepare(instance, event_name):
m = mock.MagicMock()
m.instance = instance
m.event_name = event_name
m.wait.side_effect = wait_timeout
generated_events.append(m)
return m
virtapi = manager.ComputeVirtAPI(mock.MagicMock())
prepare = virtapi._compute.instance_events.prepare_for_instance_event
prepare.side_effect = fake_prepare
drv = driver.LXDDriver(virtapi)
instance_href = fake_instance.fake_instance_obj(
context.get_admin_context(), name='test', memory_mb=0)
@mock.patch.object(drv, 'plug_vifs')
@mock.patch('nova.virt.configdrive.required_by')
def test_spawn(configdrive, plug_vifs):
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
self.client.containers.get.side_effect = container_get
configdrive.return_value = False
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = mock.Mock()
injected_files = mock.Mock()
admin_password = mock.Mock()
network_info = [_VIF]
block_device_info = mock.Mock()
drv.init_host(None)
drv.spawn(
ctx, instance, image_meta, injected_files, admin_password,
network_info, block_device_info)
test_spawn()
if cfg.CONF.vif_plugging_timeout and utils.is_neutron():
prepare.assert_has_calls([
mock.call(instance_href, 'network-vif-plugged-vif1'),
mock.call(instance_href, 'network-vif-plugged-vif2')])
for event in generated_events:
if neutron_failure and generated_events.index(event) != 0:
self.assertEqual(0, event.call_count)
else:
self.assertEqual(0, prepare.call_count)
@mock.patch('nova.utils.is_neutron', return_value=True)
def test_spawn_instance_with_network_events(self, is_neutron):
self.flags(vif_plugging_timeout=0)
self._test_spawn_instance_with_network_events()
@mock.patch('nova.utils.is_neutron', return_value=True)
def test_spawn_instance_with_events_neutron_failed_nonfatal_timeout(
self, is_neutron):
self.flags(vif_plugging_timeout=0)
self.flags(vif_plugging_is_fatal=False)
self._test_spawn_instance_with_network_events(
neutron_failure='timeout')
def test_destroy(self):
mock_container = mock.Mock()
mock_container.status = 'Running'
self.client.containers.get.return_value = mock_container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = [_VIF]
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.cleanup = mock.Mock() # There is a separate cleanup test
lxd_driver.destroy(ctx, instance, network_info)
lxd_driver.cleanup.assert_called_once_with(
ctx, instance, network_info, None)
lxd_driver.client.containers.get.assert_called_once_with(instance.name)
mock_container.stop.assert_called_once_with(wait=True)
mock_container.delete.assert_called_once_with(wait=True)
def test_destroy_without_instance(self):
def side_effect(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
self.client.containers.get.side_effect = side_effect
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = [_VIF]
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.cleanup = mock.Mock() # There is a separate cleanup test
lxd_driver.destroy(ctx, instance, network_info)
lxd_driver.cleanup.assert_called_once_with(
ctx, instance, network_info, None)
@mock.patch('nova.virt.lxd.driver.network')
@mock.patch('os.path.exists', mock.Mock(return_value=True))
@mock.patch('pwd.getpwuid')
@mock.patch('shutil.rmtree')
@mock.patch.object(driver.utils, 'execute')
def test_cleanup(self, execute, rmtree, getpwuid, _):
mock_profile = mock.Mock()
self.client.profiles.get.return_value = mock_profile
pwuid = mock.Mock()
pwuid.pw_name = 'user'
getpwuid.return_value = pwuid
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = [_VIF]
instance_dir = common.InstanceAttributes(instance).instance_dir
block_device_info = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.firewall_driver = mock.Mock()
lxd_driver.cleanup(ctx, instance, network_info, block_device_info)
self.vif_driver.unplug.assert_called_once_with(
instance, network_info[0])
lxd_driver.firewall_driver.unfilter_instance.assert_called_once_with(
instance, network_info)
execute.assert_called_once_with(
'chown', '-R', 'user:user', instance_dir, run_as_root=True)
rmtree.assert_called_once_with(instance_dir)
mock_profile.delete.assert_called_once_with()
def test_reboot(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.reboot(ctx, instance, None, None)
self.client.containers.get.assert_called_once_with(instance.name)
@mock.patch('nova.virt.lxd.driver.network')
@mock.patch('pwd.getpwuid', mock.Mock(return_value=mock.Mock(pw_uid=1234)))
@mock.patch('os.getuid', mock.Mock())
@mock.patch('os.path.exists', mock.Mock(return_value=True))
@mock.patch('six.moves.builtins.open')
@mock.patch.object(driver.utils, 'execute')
def test_get_console_output(self, execute, _open, _):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
expected_calls = [
mock.call(
'chown', '1234:1234', '/var/log/lxd/{}/console.log'.format(
instance.name),
run_as_root=True),
mock.call(
'chmod', '755', '/lxd/containers/{}'.format(
instance.name),
run_as_root=True),
]
_open.return_value.__enter__.return_value = six.BytesIO(b'output')
lxd_driver = driver.LXDDriver(None)
contents = lxd_driver.get_console_output(context, instance)
self.assertEqual(b'output', contents)
self.assertEqual(expected_calls, execute.call_args_list)
def test_get_host_ip_addr(self):
lxd_driver = driver.LXDDriver(None)
result = lxd_driver.get_host_ip_addr()
self.assertEqual('0.0.0.0', result)
def test_attach_interface(self):
expected = {
'hwaddr': '00:11:22:33:44:55',
'parent': 'qbr0123456789a',
'nictype': 'bridged',
'type': 'nic',
}
profile = mock.Mock()
profile.devices = {
'eth0': {
'name': 'eth0',
'nictype': 'bridged',
'parent': 'lxdbr0',
'type': 'nic'
},
'root': {
'path': '/',
'type': 'disk'
},
}
self.client.profiles.get.return_value = profile
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_meta = None
vif = {
'id': '0123456789abcdef',
'type': network_model.VIF_TYPE_OVS,
'address': '00:11:22:33:44:55',
'network': {
'bridge': 'fakebr'}}
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.firewall_driver = mock.Mock()
lxd_driver.attach_interface(ctx, instance, image_meta, vif)
self.assertTrue('eth1' in profile.devices)
self.assertEqual(expected, profile.devices['eth1'])
profile.save.assert_called_once_with(wait=True)
def test_detach_interface(self):
profile = mock.Mock()
profile.devices = {
'eth0': {
'name': 'eth0',
'nictype': 'bridged',
'parent': 'lxdbr0',
'hwaddr': '00:11:22:33:44:55',
'type': 'nic'
},
'root': {
'path': '/',
'type': 'disk'
},
}
self.client.profiles.get.return_value = profile
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
vif = {
'id': '0123456789abcdef',
'type': network_model.VIF_TYPE_OVS,
'address': '00:11:22:33:44:55',
'network': {
'bridge': 'fakebr'}}
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.detach_interface(ctx, instance, vif)
self.vif_driver.unplug.assert_called_once_with(
instance, vif)
self.assertEqual(['root'], sorted(profile.devices.keys()))
profile.save.assert_called_once_with(wait=True)
def test_migrate_disk_and_power_off(self):
container = mock.Mock()
self.client.containers.get.return_value = container
profile = mock.Mock()
self.client.profiles.get.return_value = profile
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
dest = '0.0.0.0'
flavor = mock.Mock()
network_info = []
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.migrate_disk_and_power_off(
ctx, instance, dest, flavor, network_info)
profile.save.assert_called_once_with()
container.stop.assert_called_once_with(wait=True)
def test_migrate_disk_and_power_off_different_host(self):
"""Migrating to a different host only shuts down the container."""
container = mock.Mock()
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
dest = '0.0.0.1'
flavor = mock.Mock()
network_info = []
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.migrate_disk_and_power_off(
ctx, instance, dest, flavor, network_info)
self.assertEqual(0, self.client.profiles.get.call_count)
container.stop.assert_called_once_with(wait=True)
@mock.patch('nova.virt.lxd.driver.network')
@mock.patch('os.major')
@mock.patch('os.minor')
@mock.patch('os.stat')
@mock.patch('os.path.realpath')
def test_attach_volume(self, realpath, stat, minor, major, _):
profile = mock.Mock()
self.client.profiles.get.return_value = profile
realpath.return_value = '/dev/sdc'
stat.return_value.st_rdev = 2080
minor.return_value = 32
major.return_value = 8
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
connection_info = fake_connection_info(
{'id': 1, 'name': 'volume-00000001'},
'10.0.2.15:3260', 'iqn.2010-10.org.openstack:volume-00000001',
auth=True)
mountpoint = '/dev/sdd'
driver.brick_get_connector = mock.MagicMock()
driver.brick_get_connector_properties = mock.MagicMock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
# driver.brick_get_connector = mock.MagicMock()
# lxd_driver.storage_driver.connect_volume = mock.MagicMock()
lxd_driver.attach_volume(
ctx, connection_info, instance, mountpoint, None, None, None)
lxd_driver.client.profiles.get.assert_called_once_with(instance.name)
# driver.brick_get_connector.connect_volume.assert_called_once_with(
# connection_info['data'])
profile.save.assert_called_once_with()
def test_detach_volume(self):
profile = mock.Mock()
profile.devices = {
'eth0': {
'name': 'eth0',
'nictype': 'bridged',
'parent': 'lxdbr0',
'type': 'nic'
},
'root': {
'path': '/',
'type': 'disk'
},
1: {
'path': '/dev/sdc',
'type': 'unix-block'
},
}
expected = {
'eth0': {
'name': 'eth0',
'nictype': 'bridged',
'parent': 'lxdbr0',
'type': 'nic'
},
'root': {
'path': '/',
'type': 'disk'
},
}
self.client.profiles.get.return_value = profile
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
connection_info = fake_connection_info(
{'id': 1, 'name': 'volume-00000001'},
'10.0.2.15:3260', 'iqn.2010-10.org.openstack:volume-00000001',
auth=True)
mountpoint = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
driver.brick_get_connector = mock.MagicMock()
driver.brick_get_connector_properties = mock.MagicMock()
lxd_driver.detach_volume(connection_info, instance, mountpoint, None)
lxd_driver.client.profiles.get.assert_called_once_with(instance.name)
self.assertEqual(expected, profile.devices)
profile.save.assert_called_once_with()
def test_pause(self):
container = mock.Mock()
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.pause(instance)
self.client.containers.get.assert_called_once_with(instance.name)
container.freeze.assert_called_once_with(wait=True)
def test_unpause(self):
container = mock.Mock()
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.unpause(instance)
self.client.containers.get.assert_called_once_with(instance.name)
container.unfreeze.assert_called_once_with(wait=True)
def test_suspend(self):
container = mock.Mock()
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.suspend(ctx, instance)
self.client.containers.get.assert_called_once_with(instance.name)
container.freeze.assert_called_once_with(wait=True)
def test_resume(self):
container = mock.Mock()
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.resume(ctx, instance, None, None)
self.client.containers.get.assert_called_once_with(instance.name)
container.unfreeze.assert_called_once_with(wait=True)
def test_rescue(self):
profile = mock.Mock()
profile.devices = {
'root': {
'type': 'disk',
'path': '/',
'size': '1GB'
}
}
container = mock.Mock()
self.client.profiles.get.return_value = profile
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
profile.name = instance.name
network_info = [_VIF]
image_meta = mock.Mock()
rescue_password = mock.Mock()
rescue = '%s-rescue' % instance.name
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.rescue(
ctx, instance, network_info, image_meta, rescue_password)
lxd_driver.client.containers.get.assert_called_once_with(instance.name)
container.rename.assert_called_once_with(rescue, wait=True)
lxd_driver.client.profiles.get.assert_called_once_with(instance.name)
lxd_driver.client.containers.create.assert_called_once_with(
{'name': instance.name, 'profiles': [profile.name],
'source': {'type': 'image', 'alias': None},
}, wait=True)
self.assertTrue('rescue' in profile.devices)
def test_unrescue(self):
container = mock.Mock()
container.status = 'Running'
self.client.containers.get.return_value = container
profile = mock.Mock()
profile.devices = {
'root': {
'type': 'disk',
'path': '/',
'size': '1GB'
},
'rescue': {
'source': '/path',
'path': '/mnt',
'type': 'disk'
}
}
self.client.profiles.get.return_value = profile
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = [_VIF]
rescue = '%s-rescue' % instance.name
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.unrescue(instance, network_info)
container.stop.assert_called_once_with(wait=True)
container.delete.assert_called_once_with(wait=True)
lxd_driver.client.profiles.get.assert_called_once_with(instance.name)
profile.save.assert_called_once_with()
lxd_driver.client.containers.get.assert_called_with(rescue)
container.rename.assert_called_once_with(instance.name, wait=True)
container.start.assert_called_once_with(wait=True)
self.assertTrue('rescue' not in profile.devices)
def test_power_off(self):
container = mock.Mock()
container.status = 'Running'
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.power_off(instance)
self.client.containers.get.assert_called_once_with(instance.name)
container.stop.assert_called_once_with(wait=True)
def test_power_on(self):
container = mock.Mock()
container.status = 'Stopped'
self.client.containers.get.return_value = container
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.power_on(ctx, instance, None)
self.client.containers.get.assert_called_once_with(instance.name)
container.start.assert_called_once_with(wait=True)
@mock.patch('socket.gethostname', mock.Mock(return_value='fake_hostname'))
@mock.patch('os.statvfs', return_value=mock.Mock(
f_blocks=131072000, f_bsize=8192, f_bavail=65536000))
@mock.patch('nova.virt.lxd.driver.open')
@mock.patch.object(driver.utils, 'execute')
def test_get_available_resource(self, execute, open, statvfs):
expected = {
'cpu_info': {
"features": "fake flag goes here",
"model": "Fake CPU",
"topology": {"sockets": "10", "threads": "4", "cores": "5"},
"arch": "x86_64", "vendor": "FakeVendor"
},
'hypervisor_hostname': 'fake_hostname',
'hypervisor_type': 'lxd',
'hypervisor_version': '011',
'local_gb': 1000,
'local_gb_used': 500,
'memory_mb': 10000,
'memory_mb_used': 8000,
'numa_topology': None,
'supported_instances': [
('i686', 'lxd', 'exe'),
('x86_64', 'lxd', 'exe'),
('i686', 'lxc', 'exe'),
('x86_64', 'lxc', 'exe')],
'vcpus': 200,
'vcpus_used': 0}
execute.return_value = (
'Model name: Fake CPU\n'
'Vendor ID: FakeVendor\n'
'Socket(s): 10\n'
'Core(s) per socket: 5\n'
'Thread(s) per core: 4\n\n',
None)
meminfo = mock.MagicMock()
meminfo.__enter__.return_value = six.moves.cStringIO(
'MemTotal: 10240000 kB\n'
'MemFree: 2000000 kB\n'
'Buffers: 24000 kB\n'
'Cached: 24000 kB\n')
open.side_effect = [
six.moves.cStringIO('flags: fake flag goes here\n'
'processor: 2\n'
'\n'),
meminfo,
]
lxd_config = {
'environment': {
'storage': 'dir',
},
'config': {}
}
lxd_driver = driver.LXDDriver(None)
lxd_driver.client = mock.MagicMock()
lxd_driver.client.host_info = lxd_config
value = lxd_driver.get_available_resource(None)
# This is funky, but json strings make for fragile tests.
value['cpu_info'] = json.loads(value['cpu_info'])
self.assertEqual(expected, value)
@mock.patch('socket.gethostname', mock.Mock(return_value='fake_hostname'))
@mock.patch('nova.virt.lxd.driver.open')
@mock.patch.object(driver.utils, 'execute')
def test_get_available_resource_zfs(self, execute, open):
expected = {
'cpu_info': {
"features": "fake flag goes here",
"model": "Fake CPU",
"topology": {"sockets": "10", "threads": "4", "cores": "5"},
"arch": "x86_64", "vendor": "FakeVendor"
},
'hypervisor_hostname': 'fake_hostname',
'hypervisor_type': 'lxd',
'hypervisor_version': '011',
'local_gb': 2222,
'local_gb_used': 200,
'memory_mb': 10000,
'memory_mb_used': 8000,
'numa_topology': None,
'supported_instances': [
('i686', 'lxd', 'exe'),
('x86_64', 'lxd', 'exe'),
('i686', 'lxc', 'exe'),
('x86_64', 'lxc', 'exe')],
'vcpus': 200,
'vcpus_used': 0}
execute.side_effect = [
('Model name: Fake CPU\n'
'Vendor ID: FakeVendor\n'
'Socket(s): 10\n'
'Core(s) per socket: 5\n'
'Thread(s) per core: 4\n\n',
None),
('2.17T\n', None),
('200.4G\n', None),
('1.8T\n', None)
]
meminfo = mock.MagicMock()
meminfo.__enter__.return_value = six.moves.cStringIO(
'MemTotal: 10240000 kB\n'
'MemFree: 2000000 kB\n'
'Buffers: 24000 kB\n'
'Cached: 24000 kB\n')
open.side_effect = [
six.moves.cStringIO('flags: fake flag goes here\n'
'processor: 2\n'
'\n'),
meminfo,
]
lxd_config = {
'environment': {
'storage': 'zfs',
},
'config': {
'storage.zfs_pool_name': 'lxd',
}
}
lxd_driver = driver.LXDDriver(None)
lxd_driver.client = mock.MagicMock()
lxd_driver.client.host_info = lxd_config
value = lxd_driver.get_available_resource(None)
# This is funky, but json strings make for fragile tests.
value['cpu_info'] = json.loads(value['cpu_info'])
self.assertEqual(expected, value)
def test_refresh_instance_security_rules(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
firewall = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.firewall_driver = firewall
lxd_driver.refresh_instance_security_rules(instance)
firewall.refresh_instance_security_rules.assert_called_once_with(
instance)
def test_ensure_filtering_rules_for_instance(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
firewall = mock.Mock()
network_info = object()
lxd_driver = driver.LXDDriver(None)
lxd_driver.firewall_driver = firewall
lxd_driver.ensure_filtering_rules_for_instance(instance, network_info)
firewall.ensure_filtering_rules_for_instance.assert_called_once_with(
instance, network_info)
def test_filter_defer_apply_on(self):
firewall = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.firewall_driver = firewall
lxd_driver.filter_defer_apply_on()
firewall.filter_defer_apply_on.assert_called_once_with()
def test_filter_defer_apply_off(self):
firewall = mock.Mock()
lxd_driver = driver.LXDDriver(None)
lxd_driver.firewall_driver = firewall
lxd_driver.filter_defer_apply_off()
firewall.filter_defer_apply_off.assert_called_once_with()
def test_unfilter_instance(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
firewall = mock.Mock()
network_info = object()
lxd_driver = driver.LXDDriver(None)
lxd_driver.firewall_driver = firewall
lxd_driver.unfilter_instance(instance, network_info)
firewall.unfilter_instance.assert_called_once_with(
instance, network_info)
@mock.patch.object(driver.utils, 'execute')
def test_get_host_uptime(self, execute):
expected = '00:00:00 up 0 days, 0:00 , 0 users, load average: 0'
execute.return_value = (expected, 'stderr')
lxd_driver = driver.LXDDriver(None)
result = lxd_driver.get_host_uptime()
self.assertEqual(expected, result)
@mock.patch('nova.virt.lxd.driver.psutil.cpu_times')
@mock.patch('nova.virt.lxd.driver.open')
@mock.patch.object(driver.utils, 'execute')
def test_get_host_cpu_stats(self, execute, open, cpu_times):
cpu_times.return_value = [
'1', 'b', '2', '3', '4'
]
execute.return_value = (
'Model name: Fake CPU\n'
'Vendor ID: FakeVendor\n'
'Socket(s): 10\n'
'Core(s) per socket: 5\n'
'Thread(s) per core: 4\n\n',
None)
open.return_value = six.moves.cStringIO(
'flags: fake flag goes here\n'
'processor: 2\n\n')
expected = {
'user': 1, 'iowait': 4, 'frequency': 0, 'kernel': 2, 'idle': 3}
lxd_driver = driver.LXDDriver(None)
result = lxd_driver.get_host_cpu_stats()
self.assertEqual(expected, result)
def test_get_volume_connector(self):
expected = {
'host': 'fakehost',
'initiator': 'fake',
'ip': self.CONF.my_block_storage_ip
}
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
lxd_driver = driver.LXDDriver(None)
result = lxd_driver.get_volume_connector(instance)
self.assertEqual(expected, result)
@mock.patch('nova.virt.lxd.driver.socket.gethostname')
def test_get_available_nodes(self, gethostname):
gethostname.return_value = 'nova-lxd'
expected = ['nova-lxd']
lxd_driver = driver.LXDDriver(None)
result = lxd_driver.get_available_nodes()
self.assertEqual(expected, result)
@mock.patch('nova.virt.lxd.driver.IMAGE_API')
@mock.patch('nova.virt.lxd.driver.lockutils.lock')
def test_snapshot(self, lock, IMAGE_API):
update_task_state_expected = [
mock.call(task_state='image_pending_upload'),
mock.call(
expected_state='image_pending_upload',
task_state='image_uploading'),
]
container = mock.Mock()
self.client.containers.get.return_value = container
image = mock.Mock()
container.publish.return_value = image
data = mock.Mock()
image.export.return_value = data
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
image_id = mock.Mock()
update_task_state = mock.Mock()
snapshot = {'name': mock.Mock()}
IMAGE_API.get.return_value = snapshot
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.snapshot(ctx, instance, image_id, update_task_state)
self.assertEqual(
update_task_state_expected, update_task_state.call_args_list)
IMAGE_API.get.assert_called_once_with(ctx, image_id)
IMAGE_API.update.assert_called_once_with(
ctx, image_id, {
'name': snapshot['name'],
'disk_format': 'raw',
'container_format': 'bare'},
data)
def test_finish_revert_migration(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = []
container = mock.Mock()
self.client.containers.get.return_value = container
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.finish_revert_migration(ctx, instance, network_info)
container.start.assert_called_once_with(wait=True)
def test_check_can_live_migrate_destination(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
src_compute_info = mock.Mock()
dst_compute_info = mock.Mock()
def container_get(*args, **kwargs):
raise lxdcore_exceptions.LXDAPIException(MockResponse(404))
self.client.containers.get.side_effect = container_get
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
retval = lxd_driver.check_can_live_migrate_destination(
ctx, instance, src_compute_info, dst_compute_info)
self.assertIsInstance(retval, driver.LXDLiveMigrateData)
def test_confirm_migration(self):
migration = mock.Mock()
instance = fake_instance.fake_instance_obj(
context.get_admin_context, name='test', memory_mb=0)
network_info = []
profile = mock.Mock()
container = mock.Mock()
self.client.profiles.get.return_value = profile
self.client.containers.get.return_value = container
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.confirm_migration(migration, instance, network_info)
profile.delete.assert_called_once_with()
container.delete.assert_called_once_with(wait=True)
def test_post_live_migration(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
container = mock.Mock()
self.client.containers.get.return_value = container
lxd_driver = driver.LXDDriver(None)
lxd_driver.init_host(None)
lxd_driver.post_live_migration(context, instance, None)
container.delete.assert_called_once_with(wait=True)
def test_post_live_migration_at_source(self):
ctx = context.get_admin_context()
instance = fake_instance.fake_instance_obj(
ctx, name='test', memory_mb=0)
network_info = []
profile = mock.Mock()
self.client.profiles.get.return_value = profile
lxd_driver = driver.LXDDriver(None)
lxd_driver.cleanup = mock.Mock()
lxd_driver.init_host(None)
lxd_driver.post_live_migration_at_source(
ctx, instance, network_info)
profile.delete.assert_called_once_with()
lxd_driver.cleanup.assert_called_once_with(ctx, instance, network_info)