nova/nova/tests/functional/regressions/test_bug_1825034.py

78 lines
3.5 KiB
Python

# 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.
from nova import context as nova_context
from nova.db import api as db_api
from nova.objects import virtual_interface
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 FillVirtualInterfaceListMigration(
test.TestCase, integrated_helpers.InstanceHelperMixin):
"""Regression test for a bug 1825034 introduced in Stein.
The fill_virtual_interface_list online data migration creates a mostly
empty marker instance record and immediately (soft) deletes it just to
satisfy a foreign key constraint with the virtual_interfaces table.
The problem is since the fake instance marker record is mostly empty,
it can fail to load fields in the API when listing deleted servers.
"""
def setUp(self):
super(FillVirtualInterfaceListMigration, self).setUp()
api_fixture = self.useFixture(nova_fixtures.OSAPIFixture(
api_version='v2.1'))
self.api = api_fixture.admin_api
self.useFixture(nova_fixtures.NeutronFixture(self))
self.useFixture(nova_fixtures.GlanceFixture(self))
self.useFixture(func_fixtures.PlacementFixture())
self.start_service('conductor')
self.start_service('scheduler')
self.start_service('compute')
def test_fill_vifs_migration(self):
# Create a test server.
self._create_server(
flavor_id=1,
networks=[{
'uuid': nova_fixtures.NeutronFixture.network_1['id'],
}],
)
# Run the online data migration which will create a (soft-deleted)
# marker record.
ctxt = nova_context.get_admin_context()
virtual_interface.fill_virtual_interface_list(ctxt, max_count=50)
# Now archive the deleted instance record.
# The following (archive stuff) is used to prove that the migration
# created a "fake instance". It is not necessary to trigger the bug.
table_to_rows_archived, deleted_instance_uuids, total_rows_archived = (
db_api.archive_deleted_rows(max_rows=1000))
self.assertIn('instances', table_to_rows_archived)
self.assertEqual(1, table_to_rows_archived['instances'])
self.assertEqual(1, len(deleted_instance_uuids))
self.assertEqual(virtual_interface.FAKE_UUID,
deleted_instance_uuids[0])
# Since the above (archive stuff) removed the fake instance, do the
# migration again to recreate it so we can exercise the code path.
virtual_interface.fill_virtual_interface_list(ctxt, max_count=50)
# Now list deleted servers. The fake marker instance should be excluded
# from the API results.
for detail in (True, False):
servers = self.api.get_servers(detail=detail,
search_opts={'all_tenants': 1,
'deleted': 1})
self.assertEqual(0, len(servers))