def test_fixture_for_an_individual_down_cell_targeted_call(self):
# We have cell0 and cell1 by default in the setup. We try targeting
# both the cells. We should get a db error for the down cell and
# the correct result for the up cell.
ctxt = context.get_admin_context()
cell0 = self.cell_mappings['cell0']
cell1 = self.cell_mappings['cell1']
with context.target_cell(ctxt, cell0) as cctxt:
inst1 = fake_instance.fake_instance_obj(cctxt)
if 'id' in inst1:
delattr(inst1, 'id')
inst1.create()
with context.target_cell(ctxt, cell1) as cctxt:
inst2 = fake_instance.fake_instance_obj(cctxt)
if 'id' in inst2:
delattr(inst2, 'id')
inst2.create()
def dummy_tester(ctxt, cell_mapping, uuid):
with context.target_cell(ctxt, cell_mapping) as cctxt:
return objects.Instance.get_by_uuid(cctxt, uuid)
# Scenario A: We do not pass any down cells, fixture automatically
# assumes the targeted cell is down whether its cell0 or cell1.
with fixtures.DownCellFixture():
self.assertRaises(db_exc.DBError, dummy_tester, ctxt, cell1,
inst2.uuid)
# Scenario B: We pass cell0 as the down cell.
with fixtures.DownCellFixture([cell0]):
self.assertRaises(db_exc.DBError, dummy_tester, ctxt, cell0,
inst1.uuid)
# Scenario C: We get the correct result from the up cell
# when targeted.
result = dummy_tester(ctxt, cell1, inst2.uuid)
self.assertEqual(inst2.uuid, result.uuid)
def test_server_get_from_down_cells(self):
def _fake_instancemapping_get_by_cell_and_project(*args, **kwargs):
# global cell based on which rest of the functions are stubbed out
cell_fixture = nova_fixtures.SingleCellSimple()
return [{
'id': 1,
'updated_at': None,
'created_at': None,
'instance_uuid': utils_fixture.uuidsentinel.inst,
'cell_id': 1,
'project_id': "6f70656e737461636b20342065766572",
'cell_mapping': cell_fixture._fake_cell_list()[0],
'queued_for_delete': False
}]
self.stub_out(
'nova.objects.InstanceMappingList.'
'_get_not_deleted_by_cell_and_project_from_db',
_fake_instancemapping_get_by_cell_and_project)
uuid = self._test_servers_post()
with nova_fixtures.DownCellFixture():
response = self._do_get('servers/%s' % uuid)
subs = {'id': uuid}
self._verify_response('server-get-down-cell-resp', subs, response, 200)
def test_fixture_when_explicitly_passing_down_cell_mappings(self):
# The test setup creates two cell mappings (cell0 and cell1) by
# default. We'll create one instance per cell and pass cell0 as
# the down cell. We should thus get db_exc.DBError for cell0 and
# correct InstanceList object from cell1.
ctxt = context.get_admin_context()
cell0 = self.cell_mappings['cell0']
cell1 = self.cell_mappings['cell1']
with context.target_cell(ctxt, cell0) as cctxt:
inst1 = fake_instance.fake_instance_obj(cctxt)
if 'id' in inst1:
delattr(inst1, 'id')
inst1.create()
with context.target_cell(ctxt, cell1) as cctxt:
inst2 = fake_instance.fake_instance_obj(cctxt)
if 'id' in inst2:
delattr(inst2, 'id')
inst2.create()
with fixtures.DownCellFixture([cell0]):
results = context.scatter_gather_all_cells(
ctxt, objects.InstanceList.get_all)
self.assertEqual(2, len(results))
for cell_uuid, result in results.items():
if cell_uuid == cell0.uuid:
self.assertIsInstance(result, db_exc.DBError)
else:
self.assertIsInstance(result, objects.InstanceList)
self.assertEqual(1, len(result))
self.assertEqual(inst2.uuid, result[0].uuid)
def test_fixture(self):
# The test setup creates two cell mappings (cell0 and cell1) by
# default. Let's first list servers across all cells while they are
# "up" to make sure that works as expected. We'll create a single
# instance in cell1.
ctxt = context.get_admin_context()
cell1 = self.cell_mappings[test.CELL1_NAME]
with context.target_cell(ctxt, cell1) as cctxt:
inst = fake_instance.fake_instance_obj(cctxt)
if 'id' in inst:
delattr(inst, 'id')
inst.create()
# Now list all instances from all cells (should get one back).
results = context.scatter_gather_all_cells(
ctxt, objects.InstanceList.get_all)
self.assertEqual(2, len(results))
self.assertEqual(0, len(results[objects.CellMapping.CELL0_UUID]))
self.assertEqual(1, len(results[cell1.uuid]))
# Now do the same but with the DownCellFixture which should result
# in exception results from both cells.
with fixtures.DownCellFixture():
results = context.scatter_gather_all_cells(
ctxt, objects.InstanceList.get_all)
self.assertEqual(2, len(results))
for result in results.values():
self.assertIsInstance(result, db_exc.DBError)
def test_get_services_from_down_cells(self):
subs = {}
with nova_fixtures.DownCellFixture():
response = self._do_get('os-services')
self._verify_response('services-list-get-resp', subs, response,
200)
def test_server_get_from_down_cells(self):
uuid = self._post_server(use_common_server_api_samples=False)
with nova_fixtures.DownCellFixture():
response = self._do_get('servers/%s' % uuid)
subs = {'id': uuid}
self._verify_response('server-get-resp', subs, response, 200)
