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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 datetime
from unittest import mock
from oslo_db import exception as db_exc
from oslo_utils.fixture import uuidsentinel as uuids
from oslo_utils import timeutils
from nova.db.main import api as db
from nova import exception
from nova.network import model as network_model
from nova.objects import instance_info_cache
from nova.tests.unit.objects import test_objects
fake_info_cache = {
'created_at': None,
'updated_at': None,
'deleted_at': None,
'deleted': False,
'instance_uuid': uuids.info_instance,
'network_info': '[]',
}
class _TestInstanceInfoCacheObject(object):
@mock.patch.object(db, 'instance_info_cache_get')
def test_get_by_instance_uuid(self, mock_get):
nwinfo = network_model.NetworkInfo.hydrate([{'address': 'foo'}])
mock_get.return_value = dict(fake_info_cache,
network_info=nwinfo.json())
obj = instance_info_cache.InstanceInfoCache.get_by_instance_uuid(
self.context, uuids.info_instance)
self.assertEqual(uuids.info_instance, obj.instance_uuid)
self.assertEqual(nwinfo, obj.network_info)
mock_get.assert_called_once_with(self.context, uuids.info_instance)
@mock.patch.object(db, 'instance_info_cache_get', return_value=None)
def test_get_by_instance_uuid_no_entries(self, mock_get):
self.assertRaises(
exception.InstanceInfoCacheNotFound,
instance_info_cache.InstanceInfoCache.get_by_instance_uuid,
self.context, uuids.info_instance)
mock_get.assert_called_once_with(self.context, uuids.info_instance)
def test_new(self):
obj = instance_info_cache.InstanceInfoCache.new(self.context,
uuids.info_instance)
self.assertEqual(set(['instance_uuid', 'network_info']),
obj.obj_what_changed())
self.assertEqual(uuids.info_instance, obj.instance_uuid)
self.assertIsNone(obj.network_info)
@mock.patch.object(db, 'instance_info_cache_update')
def test_save_updates_self(self, mock_update):
fake_updated_at = datetime.datetime(2015, 1, 1)
nwinfo = network_model.NetworkInfo.hydrate([{'address': 'foo'}])
nwinfo_json = nwinfo.json()
new_info_cache = fake_info_cache.copy()
new_info_cache['id'] = 1
new_info_cache['updated_at'] = fake_updated_at
new_info_cache['network_info'] = nwinfo_json
mock_update.return_value = new_info_cache
obj = instance_info_cache.InstanceInfoCache(context=self.context)
obj.instance_uuid = uuids.info_instance
obj.network_info = nwinfo_json
obj.save()
mock_update.assert_called_once_with(self.context, uuids.info_instance,
{'network_info': nwinfo_json})
self.assertEqual(timeutils.normalize_time(fake_updated_at),
timeutils.normalize_time(obj.updated_at))
@mock.patch.object(db, 'instance_info_cache_update')
def test_save_fkey_constraint_fail(self, mock_update):
fake_updated_at = datetime.datetime(2015, 1, 1)
nwinfo = network_model.NetworkInfo.hydrate([{'address': 'foo'}])
nwinfo_json = nwinfo.json()
new_info_cache = fake_info_cache.copy()
new_info_cache['id'] = 1
new_info_cache['updated_at'] = fake_updated_at
new_info_cache['network_info'] = nwinfo_json
# We should see InstanceNotFound raised for fkey=instance_uuid
mock_update.side_effect = db_exc.DBReferenceError(
'table', 'constraint', 'instance_uuid', 'key_table')
obj = instance_info_cache.InstanceInfoCache(context=self.context)
obj.instance_uuid = uuids.info_instance
obj.network_info = nwinfo_json
self.assertRaises(exception.InstanceNotFound, obj.save)
# We should see the original exception raised for any other fkey
mock_update.side_effect = db_exc.DBReferenceError(
'table', 'constraint', 'otherkey', 'key_table')
self.assertRaises(db_exc.DBReferenceError, obj.save)
@mock.patch.object(db, 'instance_info_cache_get',
return_value=fake_info_cache)
def test_refresh(self, mock_get):
obj = instance_info_cache.InstanceInfoCache.new(self.context,
uuids.info_instance_1)
obj.refresh()
self.assertEqual(fake_info_cache['instance_uuid'], obj.instance_uuid)
mock_get.assert_called_once_with(self.context, uuids.info_instance_1)
class TestInstanceInfoCacheObject(test_objects._LocalTest,
_TestInstanceInfoCacheObject):
pass
class TestInstanceInfoCacheObjectRemote(test_objects._RemoteTest,
_TestInstanceInfoCacheObject):
pass
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