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# Copyright 2015 Cloudbase Solutions Srl
# 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 os_win import constants
from os_win import exceptions as os_win_exc
from os_win import utilsfactory
from nova.tests.unit.virt.hyperv import test_base
from nova import utils
from nova.virt.hyperv import eventhandler
class EventHandlerTestCase(test_base.HyperVBaseTestCase):
_FAKE_POLLING_INTERVAL = 3
_FAKE_EVENT_CHECK_TIMEFRAME = 15
@mock.patch.object(utilsfactory, 'get_vmutils')
def setUp(self, mock_get_vmutils):
super(EventHandlerTestCase, self).setUp()
self._state_change_callback = mock.Mock()
self.flags(
power_state_check_timeframe=self._FAKE_EVENT_CHECK_TIMEFRAME,
group='hyperv')
self.flags(
power_state_event_polling_interval=self._FAKE_POLLING_INTERVAL,
group='hyperv')
self._event_handler = eventhandler.InstanceEventHandler(
self._state_change_callback)
self._event_handler._serial_console_ops = mock.Mock()
@mock.patch.object(eventhandler.InstanceEventHandler,
'_get_instance_uuid')
@mock.patch.object(eventhandler.InstanceEventHandler, '_emit_event')
def _test_event_callback(self, mock_emit_event, mock_get_uuid,
missing_uuid=False):
mock_get_uuid.return_value = (
mock.sentinel.instance_uuid if not missing_uuid else None)
self._event_handler._vmutils.get_vm_power_state.return_value = (
mock.sentinel.power_state)
self._event_handler._event_callback(mock.sentinel.instance_name,
mock.sentinel.power_state)
if not missing_uuid:
mock_emit_event.assert_called_once_with(
mock.sentinel.instance_name,
mock.sentinel.instance_uuid,
mock.sentinel.power_state)
else:
self.assertFalse(mock_emit_event.called)
def test_event_callback_uuid_present(self):
self._test_event_callback()
def test_event_callback_missing_uuid(self):
self._test_event_callback(missing_uuid=True)
@mock.patch.object(eventhandler.InstanceEventHandler, '_get_virt_event')
@mock.patch.object(utils, 'spawn_n')
def test_emit_event(self, mock_spawn, mock_get_event):
self._event_handler._emit_event(mock.sentinel.instance_name,
mock.sentinel.instance_uuid,
mock.sentinel.instance_state)
virt_event = mock_get_event.return_value
mock_spawn.assert_has_calls(
[mock.call(self._state_change_callback, virt_event),
mock.call(self._event_handler._handle_serial_console_workers,
mock.sentinel.instance_name,
mock.sentinel.instance_state)])
def test_handle_serial_console_instance_running(self):
self._event_handler._handle_serial_console_workers(
mock.sentinel.instance_name,
constants.HYPERV_VM_STATE_ENABLED)
serialops = self._event_handler._serial_console_ops
serialops.start_console_handler.assert_called_once_with(
mock.sentinel.instance_name)
def test_handle_serial_console_instance_stopped(self):
self._event_handler._handle_serial_console_workers(
mock.sentinel.instance_name,
constants.HYPERV_VM_STATE_DISABLED)
serialops = self._event_handler._serial_console_ops
serialops.stop_console_handler.assert_called_once_with(
mock.sentinel.instance_name)
def _test_get_instance_uuid(self, instance_found=True,
missing_uuid=False):
if instance_found:
side_effect = (mock.sentinel.instance_uuid
if not missing_uuid else None, )
else:
side_effect = os_win_exc.HyperVVMNotFoundException(
vm_name=mock.sentinel.instance_name)
mock_get_uuid = self._event_handler._vmutils.get_instance_uuid
mock_get_uuid.side_effect = side_effect
instance_uuid = self._event_handler._get_instance_uuid(
mock.sentinel.instance_name)
expected_uuid = (mock.sentinel.instance_uuid
if instance_found and not missing_uuid else None)
self.assertEqual(expected_uuid, instance_uuid)
def test_get_nova_created_instance_uuid(self):
self._test_get_instance_uuid()
def test_get_deleted_instance_uuid(self):
self._test_get_instance_uuid(instance_found=False)
def test_get_instance_uuid_missing_notes(self):
self._test_get_instance_uuid(missing_uuid=True)
@mock.patch('nova.virt.event.LifecycleEvent')
def test_get_virt_event(self, mock_lifecycle_event):
instance_state = constants.HYPERV_VM_STATE_ENABLED
expected_transition = self._event_handler._TRANSITION_MAP[
instance_state]
virt_event = self._event_handler._get_virt_event(
mock.sentinel.instance_uuid, instance_state)
self.assertEqual(mock_lifecycle_event.return_value,
virt_event)
mock_lifecycle_event.assert_called_once_with(
uuid=mock.sentinel.instance_uuid,
transition=expected_transition)
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