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# Copyright 2013 IBM Corp.
#
# 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 oslo_utils import timeutils
from nova import context
from nova import db
from nova import exception
from nova import objects
from nova.objects import migration
from nova.tests.unit import fake_instance
from nova.tests.unit.objects import test_objects
from nova.tests import uuidsentinel
NOW = timeutils.utcnow().replace(microsecond=0)
def fake_db_migration(**updates):
db_instance = {
'created_at': NOW,
'updated_at': None,
'deleted_at': None,
'deleted': False,
'id': 123,
'source_compute': 'compute-source',
'dest_compute': 'compute-dest',
'source_node': 'node-source',
'dest_node': 'node-dest',
'dest_host': 'host-dest',
'old_instance_type_id': 42,
'new_instance_type_id': 84,
'instance_uuid': 'fake-uuid',
'status': 'migrating',
'migration_type': 'resize',
'hidden': False,
'memory_total': 123456,
'memory_processed': 12345,
'memory_remaining': 120000,
'disk_total': 234567,
'disk_processed': 23456,
'disk_remaining': 230000,
}
if updates:
db_instance.update(updates)
return db_instance
class _TestMigrationObject(object):
@mock.patch.object(db, 'migration_get')
def test_get_by_id(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
mock_get.return_value = fake_migration
mig = migration.Migration.get_by_id(ctxt, fake_migration['id'])
self.compare_obj(mig, fake_migration)
mock_get.assert_called_once_with(ctxt, fake_migration['id'])
@mock.patch.object(db, 'migration_get_by_instance_and_status')
def test_get_by_instance_and_status(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
mock_get.return_value = fake_migration
mig = migration.Migration.get_by_instance_and_status(
ctxt, fake_migration['id'], 'migrating')
self.compare_obj(mig, fake_migration)
mock_get.assert_called_once_with(ctxt,
fake_migration['id'],
'migrating')
@mock.patch('nova.db.migration_get_in_progress_by_instance')
def test_get_in_progress_by_instance(self, m_get_mig):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
db_migrations = [fake_migration, dict(fake_migration, id=456)]
m_get_mig.return_value = db_migrations
migrations = migration.MigrationList.get_in_progress_by_instance(
ctxt, fake_migration['instance_uuid'])
self.assertEqual(2, len(migrations))
for index, db_migration in enumerate(db_migrations):
self.compare_obj(migrations[index], db_migration)
@mock.patch.object(db, 'migration_create')
def test_create(self, mock_create):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
mock_create.return_value = fake_migration
mig = migration.Migration(context=ctxt)
mig.source_compute = 'foo'
mig.migration_type = 'resize'
mig.create()
self.assertEqual(fake_migration['dest_compute'], mig.dest_compute)
mock_create.assert_called_once_with(ctxt,
{'source_compute': 'foo',
'migration_type': 'resize'})
@mock.patch.object(db, 'migration_create')
def test_recreate_fails(self, mock_create):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
mock_create.return_value = fake_migration
mig = migration.Migration(context=ctxt)
mig.source_compute = 'foo'
mig.migration_type = 'resize'
mig.create()
self.assertRaises(exception.ObjectActionError, mig.create)
mock_create.assert_called_once_with(ctxt,
{'source_compute': 'foo',
'migration_type': 'resize'})
def test_create_fails_migration_type(self):
ctxt = context.get_admin_context()
mig = migration.Migration(context=ctxt,
old_instance_type_id=42,
new_instance_type_id=84)
mig.source_compute = 'foo'
self.assertRaises(exception.ObjectActionError, mig.create)
@mock.patch.object(db, 'migration_update')
def test_save(self, mock_update):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
mock_update.return_value = fake_migration
mig = migration.Migration(context=ctxt)
mig.id = 123
mig.source_compute = 'foo'
mig.save()
self.assertEqual(fake_migration['dest_compute'], mig.dest_compute)
mock_update.assert_called_once_with(ctxt, 123,
{'source_compute': 'foo'})
@mock.patch.object(db, 'instance_get_by_uuid')
def test_instance(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
fake_inst = fake_instance.fake_db_instance()
mock_get.return_value = fake_inst
mig = migration.Migration._from_db_object(ctxt,
migration.Migration(),
fake_migration)
mig._context = ctxt
self.assertEqual(mig.instance.host, fake_inst['host'])
mock_get.assert_called_once_with(ctxt,
fake_migration['instance_uuid'],
columns_to_join=['info_cache',
'security_groups'])
def test_instance_setter(self):
migration = objects.Migration(instance_uuid=uuidsentinel.instance)
inst = objects.Instance(uuid=uuidsentinel.instance)
with mock.patch('nova.objects.Instance.get_by_uuid') as mock_get:
migration.instance = inst
migration.instance
self.assertFalse(mock_get.called)
self.assertEqual(inst, migration._cached_instance)
self.assertEqual(inst, migration.instance)
@mock.patch.object(db, 'migration_get_unconfirmed_by_dest_compute')
def test_get_unconfirmed_by_dest_compute(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
db_migrations = [fake_migration, dict(fake_migration, id=456)]
mock_get.return_value = db_migrations
migrations = (
migration.MigrationList.get_unconfirmed_by_dest_compute(
ctxt, 'window', 'foo', use_slave=False))
self.assertEqual(2, len(migrations))
for index, db_migration in enumerate(db_migrations):
self.compare_obj(migrations[index], db_migration)
mock_get.assert_called_once_with(ctxt, 'window', 'foo')
@mock.patch.object(db, 'migration_get_in_progress_by_host_and_node')
def test_get_in_progress_by_host_and_node(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
db_migrations = [fake_migration, dict(fake_migration, id=456)]
mock_get.return_value = db_migrations
migrations = (
migration.MigrationList.get_in_progress_by_host_and_node(
ctxt, 'host', 'node'))
self.assertEqual(2, len(migrations))
for index, db_migration in enumerate(db_migrations):
self.compare_obj(migrations[index], db_migration)
mock_get.assert_called_once_with(ctxt, 'host', 'node')
@mock.patch.object(db, 'migration_get_all_by_filters')
def test_get_by_filters(self, mock_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
db_migrations = [fake_migration, dict(fake_migration, id=456)]
filters = {'foo': 'bar'}
mock_get.return_value = db_migrations
migrations = migration.MigrationList.get_by_filters(ctxt, filters)
self.assertEqual(2, len(migrations))
for index, db_migration in enumerate(db_migrations):
self.compare_obj(migrations[index], db_migration)
mock_get.assert_called_once_with(ctxt, filters)
def test_migrate_old_resize_record(self):
db_migration = dict(fake_db_migration(), migration_type=None)
with mock.patch('nova.db.migration_get') as fake_get:
fake_get.return_value = db_migration
mig = objects.Migration.get_by_id(context.get_admin_context(), 1)
self.assertTrue(mig.obj_attr_is_set('migration_type'))
self.assertEqual('resize', mig.migration_type)
def test_migrate_old_migration_record(self):
db_migration = dict(
fake_db_migration(), migration_type=None,
old_instance_type_id=1, new_instance_type_id=1)
with mock.patch('nova.db.migration_get') as fake_get:
fake_get.return_value = db_migration
mig = objects.Migration.get_by_id(context.get_admin_context(), 1)
self.assertTrue(mig.obj_attr_is_set('migration_type'))
self.assertEqual('migration', mig.migration_type)
def test_migrate_unset_type_resize(self):
mig = objects.Migration(old_instance_type_id=1,
new_instance_type_id=2)
self.assertEqual('resize', mig.migration_type)
self.assertTrue(mig.obj_attr_is_set('migration_type'))
def test_migrate_unset_type_migration(self):
mig = objects.Migration(old_instance_type_id=1,
new_instance_type_id=1)
self.assertEqual('migration', mig.migration_type)
self.assertTrue(mig.obj_attr_is_set('migration_type'))
@mock.patch('nova.db.migration_get_by_id_and_instance')
def test_get_by_id_and_instance(self, fake_get):
ctxt = context.get_admin_context()
fake_migration = fake_db_migration()
fake_get.return_value = fake_migration
migration = objects.Migration.get_by_id_and_instance(ctxt, '1', '1')
self.compare_obj(migration, fake_migration)
class TestMigrationObject(test_objects._LocalTest,
_TestMigrationObject):
pass
class TestRemoteMigrationObject(test_objects._RemoteTest,
_TestMigrationObject):
pass
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