def test_scatter_gather_single_cell(self, mock_scatter):
ctxt = context.get_context()
mapping0 = objects.CellMapping(database_connection='fake://db0',
transport_url='none:///',
uuid=objects.CellMapping.CELL0_UUID)
filters = {'deleted': False}
context.scatter_gather_single_cell(ctxt, mapping0,
objects.InstanceList.get_by_filters, filters, sort_dir='foo')
mock_scatter.assert_called_once_with(
ctxt, [mapping0], context.CELL_TIMEOUT,
objects.InstanceList.get_by_filters, filters,
sort_dir='foo')
def test_scatter_gather_single_cell(self, mock_scatter):
ctxt = context.get_context()
mapping0 = objects.CellMapping(database_connection='fake://db0',
transport_url='none:///',
uuid=objects.CellMapping.CELL0_UUID)
filters = {'deleted': False}
context.scatter_gather_single_cell(ctxt, mapping0,
objects.InstanceList.get_by_filters, filters, sort_dir='foo')
mock_scatter.assert_called_once_with(
ctxt, [mapping0], context.CELL_TIMEOUT,
objects.InstanceList.get_by_filters, filters,
sort_dir='foo')
def get_instances_without_type(
context: 'nova_context.RequestContext',
cell_uuid: ty.Optional[str] = None,
) -> ty.List[objects.instance.Instance]:
"""Find instances without hw_machine_type set, optionally within a cell.
:param context: Request context
:param cell_uuid: Optional cell UUID to look within
:returns: A list of Instance objects or an empty list
"""
if cell_uuid:
cell_mapping = objects.CellMapping.get_by_uuid(context, cell_uuid)
results = nova_context.scatter_gather_single_cell(
context,
cell_mapping,
_get_instances_without_mtype
)
results = nova_context.scatter_gather_skip_cell0(
context,
_get_instances_without_mtype
)
# Flatten the returned list of results into a single list of instances
return list(itertools.chain(*[r for c, r in results.items()]))