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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.
from unittest import mock
from oslo_serialization import jsonutils
from oslo_utils.fixture import uuidsentinel as uuids
from nova import context
from nova import exception
from nova import objects
from nova.tests.unit.objects import test_instance_numa
from nova.tests.unit.objects import test_objects
fake_instance_uuid = uuids.fake
fake_migration_context_obj = objects.MigrationContext()
fake_migration_context_obj.instance_uuid = fake_instance_uuid
fake_migration_context_obj.migration_id = 42
fake_migration_context_obj.new_numa_topology = (
test_instance_numa.fake_obj_numa_topology.obj_clone())
fake_migration_context_obj.old_numa_topology = None
fake_migration_context_obj.new_pci_devices = objects.PciDeviceList()
fake_migration_context_obj.old_pci_devices = None
fake_migration_context_obj.new_pci_requests = (
objects.InstancePCIRequests(requests=[
objects.InstancePCIRequest(count=123, spec=[])]))
fake_migration_context_obj.old_pci_requests = None
fake_migration_context_obj.new_resources = objects.ResourceList()
fake_migration_context_obj.old_resources = None
fake_db_context = {
'created_at': None,
'updated_at': None,
'deleted_at': None,
'deleted': 0,
'instance_uuid': fake_instance_uuid,
'migration_context': jsonutils.dumps(
fake_migration_context_obj.obj_to_primitive()),
}
def get_fake_migration_context_obj(ctxt):
obj = fake_migration_context_obj.obj_clone()
obj._context = ctxt
return obj
def get_fake_migration_context_with_pci_devs(ctxt=None):
obj = get_fake_migration_context_obj(ctxt)
obj.old_pci_devices = objects.PciDeviceList(
objects=[objects.PciDevice(vendor_id='1377',
product_id='0047',
address='0000:0a:00.1',
compute_node_id=1,
request_id=uuids.pcidev)])
obj.new_pci_devices = objects.PciDeviceList(
objects=[objects.PciDevice(vendor_id='1377',
product_id='0047',
address='0000:0b:00.1',
compute_node_id=2,
request_id=uuids.pcidev)])
return obj
class _TestMigrationContext(object):
def _test_get_by_instance_uuid(self, db_data):
mig_context = objects.MigrationContext.get_by_instance_uuid(
self.context, fake_db_context['instance_uuid'])
if mig_context:
self.assertEqual(fake_db_context['instance_uuid'],
mig_context.instance_uuid)
expected_mig_context = db_data and db_data.get('migration_context')
expected_mig_context = objects.MigrationContext.obj_from_db_obj(
expected_mig_context)
self.assertEqual(expected_mig_context.instance_uuid,
mig_context.instance_uuid)
self.assertEqual(expected_mig_context.migration_id,
mig_context.migration_id)
self.assertIsInstance(expected_mig_context.new_numa_topology,
mig_context.new_numa_topology.__class__)
self.assertIsInstance(expected_mig_context.old_numa_topology,
mig_context.old_numa_topology.__class__)
self.assertIsInstance(expected_mig_context.new_pci_devices,
mig_context.new_pci_devices.__class__)
self.assertIsInstance(expected_mig_context.old_pci_devices,
mig_context.old_pci_devices.__class__)
self.assertIsInstance(expected_mig_context.new_pci_requests,
mig_context.new_pci_requests.__class__)
self.assertIsInstance(expected_mig_context.old_pci_requests,
mig_context.old_pci_requests.__class__)
self.assertIsInstance(expected_mig_context. new_resources,
mig_context.new_resources.__class__)
self.assertIsInstance(expected_mig_context.old_resources,
mig_context.old_resources.__class__)
else:
self.assertIsNone(mig_context)
@mock.patch('nova.db.main.api.instance_extra_get_by_instance_uuid')
def test_get_by_instance_uuid(self, mock_get):
mock_get.return_value = fake_db_context
self._test_get_by_instance_uuid(fake_db_context)
@mock.patch('nova.db.main.api.instance_extra_get_by_instance_uuid')
def test_get_by_instance_uuid_none(self, mock_get):
db_context = fake_db_context.copy()
db_context['migration_context'] = None
mock_get.return_value = db_context
self._test_get_by_instance_uuid(db_context)
@mock.patch('nova.db.main.api.instance_extra_get_by_instance_uuid')
def test_get_by_instance_uuid_missing(self, mock_get):
mock_get.return_value = None
self.assertRaises(
exception.MigrationContextNotFound,
objects.MigrationContext.get_by_instance_uuid,
self.context, 'fake_uuid')
@mock.patch('nova.objects.Migration.get_by_id',
return_value=objects.Migration(cross_cell_move=True))
def test_is_cross_cell_move(self, mock_get_by_id):
ctxt = context.get_admin_context()
mig_ctx = get_fake_migration_context_obj(ctxt)
self.assertTrue(mig_ctx.is_cross_cell_move())
mock_get_by_id.assert_called_once_with(ctxt, mig_ctx.migration_id)
class TestMigrationContext(test_objects._LocalTest, _TestMigrationContext):
def test_pci_mapping_for_migration(self):
mig_ctx = get_fake_migration_context_with_pci_devs()
pci_mapping = mig_ctx.get_pci_mapping_for_migration(False)
self.assertDictEqual(
{mig_ctx.old_pci_devices[0].address: mig_ctx.new_pci_devices[0]},
pci_mapping)
def test_pci_mapping_for_migration_revert(self):
mig_ctx = get_fake_migration_context_with_pci_devs()
pci_mapping = mig_ctx.get_pci_mapping_for_migration(True)
self.assertDictEqual(
{mig_ctx.new_pci_devices[0].address: mig_ctx.old_pci_devices[0]},
pci_mapping)
class TestMigrationContextRemote(test_objects._RemoteTest,
_TestMigrationContext):
pass
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