OpenStack Compute (Nova)
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# 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 neutronclient.common import exceptions as neutron_exception
from nova import test
from nova.tests import fixtures as nova_fixtures
from nova.tests.functional import fixtures as func_fixtures
from nova.tests.functional import integrated_helpers
class UnshelveNeutronErrorTest(
test.TestCase, integrated_helpers.InstanceHelperMixin):
def setUp(self):
super(UnshelveNeutronErrorTest, self).setUp()
# Start standard fixtures.
placement = func_fixtures.PlacementFixture()
self.useFixture(placement)
self.placement = placement.api
self.neutron = nova_fixtures.NeutronFixture(self)
self.useFixture(self.neutron)
self.useFixture(nova_fixtures.GlanceFixture(self))
# Start nova services.
self.api = self.useFixture(nova_fixtures.OSAPIFixture(
api_version='v2.1')).admin_api
self.api.microversion = 'latest'
self.notifier = self.useFixture(
nova_fixtures.NotificationFixture(self))
self.start_service('conductor')
self.start_service('scheduler')
self.start_service('compute', host='host1')
self.start_service('compute', host='host2')
def test_unshelve_offloaded_fails_due_to_neutron(self):
server = self._create_server(
networks=[{'port': self.neutron.port_1['id']}], az='nova:host1')
# with default config shelve means immediate offload as well
req = {
'shelve': {}
}
self.api.post_server_action(server['id'], req)
self._wait_for_server_parameter(
server, {'status': 'SHELVED_OFFLOADED',
'OS-EXT-SRV-ATTR:host': None})
allocations = self.placement.get(
'/allocations/%s' % server['id']).body['allocations']
self.assertEqual(0, len(allocations))
# disable the original host of the instance to force a port update
# during unshelve
source_service_id = self.api.get_services(
host='host1', binary='nova-compute')[0]['id']
self.api.put_service(source_service_id, {"status": "disabled"})
# Simulate that port update fails during unshelve due to neutron is
# unavailable
with mock.patch(
'nova.tests.fixtures.NeutronFixture.'
'update_port') as mock_update_port:
mock_update_port.side_effect = neutron_exception.ConnectionFailed(
reason='test')
req = {'unshelve': None}
self.api.post_server_action(server['id'], req)
self.notifier.wait_for_versioned_notifications(
'instance.unshelve.start')
self._wait_for_server_parameter(
server,
{'status': 'SHELVED_OFFLOADED',
'OS-EXT-STS:task_state': None,
'OS-EXT-SRV-ATTR:host': None})
# As the instance went back to offloaded state we expect no allocation
allocations = self.placement.get(
'/allocations/%s' % server['id']).body['allocations']
self.assertEqual(0, len(allocations))