feat(low-code concurrent): Concurrent execution for streams without partition routers nor cursor

airbyte_cdk/sources/declarative/concurrent_declarative_source.py

@@ -200,7 +200,11 @@ def _group_streams(
             # Some low-code sources use a combination of DeclarativeStream and regular Python streams. We can't inspect
             # these legacy Python streams the way we do low-code streams to determine if they are concurrent compatible,
             # so we need to treat them as synchronous
-            if isinstance(declarative_stream, DeclarativeStream):
+            if (
+                isinstance(declarative_stream, DeclarativeStream)
+                and name_to_stream_mapping[declarative_stream.name].get("retriever")["type"]
+                == "SimpleRetriever"
+            ):
                 incremental_sync_component_definition = name_to_stream_mapping[
                     declarative_stream.name
                 ].get("incremental_sync")
@@ -210,36 +214,30 @@ def _group_streams(
                     .get("retriever")
                     .get("partition_router")
                 )
+                is_without_partition_router_or_cursor = not bool(
+                    incremental_sync_component_definition
+                ) and not bool(partition_router_component_definition)
 
                 is_substream_without_incremental = (
                     partition_router_component_definition
                     and not incremental_sync_component_definition
                 )
 
-                if (
-                    incremental_sync_component_definition
-                    and incremental_sync_component_definition.get("type", "")
-                    == DatetimeBasedCursorModel.__name__
-                    and self._stream_supports_concurrent_partition_processing(
-                        declarative_stream=declarative_stream
-                    )
-                    and hasattr(declarative_stream.retriever, "stream_slicer")
-                    and isinstance(declarative_stream.retriever.stream_slicer, DatetimeBasedCursor)
+                if self._is_datetime_incremental_without_partition_routing(
+                    declarative_stream, incremental_sync_component_definition
                 ):
                     stream_state = state_manager.get_stream_state(
                         stream_name=declarative_stream.name, namespace=declarative_stream.namespace
                     )
 
-                    cursor, connector_state_converter = (
-                        self._constructor.create_concurrent_cursor_from_datetime_based_cursor(
-                            state_manager=state_manager,
-                            model_type=DatetimeBasedCursorModel,
-                            component_definition=incremental_sync_component_definition,
-                            stream_name=declarative_stream.name,
-                            stream_namespace=declarative_stream.namespace,
-                            config=config or {},
-                            stream_state=stream_state,
-                        )
+                    cursor = self._constructor.create_concurrent_cursor_from_datetime_based_cursor(
+                        state_manager=state_manager,
+                        model_type=DatetimeBasedCursorModel,
+                        component_definition=incremental_sync_component_definition,
+                        stream_name=declarative_stream.name,
+                        stream_namespace=declarative_stream.namespace,
+                        config=config or {},
+                        stream_state=stream_state,
                     )
 
                     partition_generator = StreamSlicerPartitionGenerator(
@@ -263,14 +261,19 @@ def _group_streams(
                             json_schema=declarative_stream.get_json_schema(),
                             availability_strategy=AlwaysAvailableAvailabilityStrategy(),
                             primary_key=get_primary_key_from_stream(declarative_stream.primary_key),
-                            cursor_field=cursor.cursor_field.cursor_field_key,
+                            cursor_field=cursor.cursor_field.cursor_field_key
+                            if hasattr(cursor, "cursor_field")
+                            and hasattr(
+                                cursor.cursor_field, "cursor_field_key"
+                            )  # FIXME this will need to be updated once we do the per partition
+                            else None,
                             logger=self.logger,
                             cursor=cursor,
                         )
                     )
-                elif is_substream_without_incremental and hasattr(
-                    declarative_stream.retriever, "stream_slicer"
-                ):
+                elif (
+                    is_substream_without_incremental or is_without_partition_router_or_cursor
+                ) and hasattr(declarative_stream.retriever, "stream_slicer"):
                     partition_generator = StreamSlicerPartitionGenerator(
                         DeclarativePartitionFactory(
                             declarative_stream.name,
@@ -310,6 +313,22 @@ def _group_streams(
 
         return concurrent_streams, synchronous_streams
 
+    def _is_datetime_incremental_without_partition_routing(
+        self,
+        declarative_stream: DeclarativeStream,
+        incremental_sync_component_definition: Mapping[str, Any],
+    ) -> bool:
+        return (
+            bool(incremental_sync_component_definition)
+            and incremental_sync_component_definition.get("type", "")
+            == DatetimeBasedCursorModel.__name__
+            and self._stream_supports_concurrent_partition_processing(
+                declarative_stream=declarative_stream
+            )
+            and hasattr(declarative_stream.retriever, "stream_slicer")
+            and isinstance(declarative_stream.retriever.stream_slicer, DatetimeBasedCursor)
+        )
+
     def _stream_supports_concurrent_partition_processing(
         self, declarative_stream: DeclarativeStream
     ) -> bool:

airbyte_cdk/sources/declarative/parsers/model_to_component_factory.py

@@ -17,7 +17,6 @@
     Mapping,
     MutableMapping,
     Optional,
-    Tuple,
     Type,
     Union,
     get_args,
@@ -760,7 +759,7 @@ def create_concurrent_cursor_from_datetime_based_cursor(
         config: Config,
         stream_state: MutableMapping[str, Any],
         **kwargs: Any,
-    ) -> Tuple[ConcurrentCursor, DateTimeStreamStateConverter]:
+    ) -> ConcurrentCursor:
         component_type = component_definition.get("type")
         if component_definition.get("type") != model_type.__name__:
             raise ValueError(
@@ -891,23 +890,20 @@ def create_concurrent_cursor_from_datetime_based_cursor(
             if evaluated_step:
                 step_length = parse_duration(evaluated_step)
 
-        return (
-            ConcurrentCursor(
-                stream_name=stream_name,
-                stream_namespace=stream_namespace,
-                stream_state=stream_state,
-                message_repository=self._message_repository,  # type: ignore  # message_repository is always instantiated with a value by factory
-                connector_state_manager=state_manager,
-                connector_state_converter=connector_state_converter,
-                cursor_field=cursor_field,
-                slice_boundary_fields=slice_boundary_fields,
-                start=start_date,  # type: ignore  # Having issues w/ inspection for GapType and CursorValueType as shown in existing tests. Confirmed functionality is working in practice
-                end_provider=end_date_provider,  # type: ignore  # Having issues w/ inspection for GapType and CursorValueType as shown in existing tests. Confirmed functionality is working in practice
-                lookback_window=lookback_window,
-                slice_range=step_length,
-                cursor_granularity=cursor_granularity,
-            ),
-            connector_state_converter,
+        return ConcurrentCursor(
+            stream_name=stream_name,
+            stream_namespace=stream_namespace,
+            stream_state=stream_state,
+            message_repository=self._message_repository,  # type: ignore  # message_repository is always instantiated with a value by factory
+            connector_state_manager=state_manager,
+            connector_state_converter=connector_state_converter,
+            cursor_field=cursor_field,
+            slice_boundary_fields=slice_boundary_fields,
+            start=start_date,  # type: ignore  # Having issues w/ inspection for GapType and CursorValueType as shown in existing tests. Confirmed functionality is working in practice
+            end_provider=end_date_provider,  # type: ignore  # Having issues w/ inspection for GapType and CursorValueType as shown in existing tests. Confirmed functionality is working in practice
+            lookback_window=lookback_window,
+            slice_range=step_length,
+            cursor_granularity=cursor_granularity,
         )
 
     @staticmethod

airbyte_cdk/sources/streams/concurrent/helpers.py

@@ -13,8 +13,15 @@ def get_primary_key_from_stream(
     elif isinstance(stream_primary_key, str):
         return [stream_primary_key]
     elif isinstance(stream_primary_key, list):
-        if len(stream_primary_key) > 0 and all(isinstance(k, str) for k in stream_primary_key):
+        are_all_elements_str = all(isinstance(k, str) for k in stream_primary_key)
+        are_all_elements_list_of_size_one = all(
+            isinstance(k, list) and len(k) == 1 for k in stream_primary_key
+        )
+
+        if are_all_elements_str:
             return stream_primary_key  # type: ignore # We verified all items in the list are strings
+        elif are_all_elements_list_of_size_one:
+            return list(map(lambda x: x[0], stream_primary_key))
         else:
             raise ValueError(f"Nested primary keys are not supported. Found {stream_primary_key}")
     else:

unit_tests/sources/declarative/parsers/test_model_to_component_factory.py

@@ -3062,7 +3062,7 @@ def test_create_concurrent_cursor_from_datetime_based_cursor_all_fields(
         "lookback_window": "P3D",
     }
 
-    concurrent_cursor, stream_state_converter = (
+    concurrent_cursor = (
         connector_builder_factory.create_concurrent_cursor_from_datetime_based_cursor(
             state_manager=connector_state_manager,
             model_type=DatetimeBasedCursorModel,
@@ -3094,6 +3094,7 @@ def test_create_concurrent_cursor_from_datetime_based_cursor_all_fields(
     assert concurrent_cursor._end_provider() == expected_end
     assert concurrent_cursor._concurrent_state == expected_concurrent_state
 
+    stream_state_converter = concurrent_cursor._connector_state_converter
     assert isinstance(stream_state_converter, CustomFormatConcurrentStreamStateConverter)
     assert stream_state_converter._datetime_format == expected_datetime_format
     assert stream_state_converter._is_sequential_state
@@ -3194,7 +3195,7 @@ def test_create_concurrent_cursor_from_datetime_based_cursor(
                 stream_state={},
             )
     else:
-        concurrent_cursor, stream_state_converter = (
+        concurrent_cursor = (
             connector_builder_factory.create_concurrent_cursor_from_datetime_based_cursor(
                 state_manager=connector_state_manager,
                 model_type=DatetimeBasedCursorModel,
@@ -3251,7 +3252,7 @@ def test_create_concurrent_cursor_uses_min_max_datetime_format_if_defined():
         "lookback_window": "P3D",
     }
 
-    concurrent_cursor, stream_state_converter = (
+    concurrent_cursor = (
         connector_builder_factory.create_concurrent_cursor_from_datetime_based_cursor(
             state_manager=connector_state_manager,
             model_type=DatetimeBasedCursorModel,