def test_runner_api_transformation_properties_none(self,
unused_mock_pubsub):
# Confirming that properties stay None after a runner API transformation.
sink = _PubSubSink(
topic='projects/fakeprj/topics/a_topic',
id_label=None,
with_attributes=True,
# We expect encoded PubSub write transform to always return attributes.
timestamp_attribute=None)
transform = Write(sink)
context = pipeline_context.PipelineContext()
proto_transform_spec = transform.to_runner_api(context)
self.assertEqual(common_urns.composites.PUBSUB_WRITE.urn,
proto_transform_spec.urn)
pubsub_write_payload = (proto_utils.parse_Bytes(
proto_transform_spec.payload,
beam_runner_api_pb2.PubSubWritePayload))
proto_transform = beam_runner_api_pb2.PTransform(
unique_name="dummy_label", spec=proto_transform_spec)
transform_from_proto = Write.from_runner_api_parameter(
proto_transform, pubsub_write_payload, None)
self.assertTrue(isinstance(transform_from_proto, Write))
self.assertTrue(isinstance(transform_from_proto.sink, _PubSubSink))
self.assertTrue(transform_from_proto.sink.with_attributes)
self.assertIsNone(transform_from_proto.sink.id_label)
self.assertIsNone(transform_from_proto.sink.timestamp_attribute)
def expand(self, pcoll):
do_once = pcoll.pipeline | 'DoOnceSuccess' >> core.Create([None])
main_write_result = pcoll | 'MainWrite' >> Write(self.sink)
return (do_once
| 'SuccessWrite' >> core.FlatMap(
self._success_write, pvalue.AsIter(main_write_result)))