do not raise exception when stopping a non existent pipeline

Author: sanderegg

services/web/server/src/simcore_service_webserver/director_v2/_director_v2_service.py

@@ -15,6 +15,7 @@
 from pydantic import TypeAdapter
 from pydantic.types import PositiveInt
 from servicelib.aiohttp import status
+from servicelib.exception_utils import suppress_exceptions
 from servicelib.logging_errors import create_troubleshotting_log_kwargs
 from servicelib.logging_utils import log_decorator
 from simcore_postgres_database.utils_groups_extra_properties import (
@@ -112,7 +113,6 @@ async def is_pipeline_running(
 async def get_computation_task(
     app: web.Application, user_id: UserID, project_id: ProjectID
 ) -> ComputationTask | None:
-
     try:
         dv2_computation = await DirectorV2RestClient(app).get_computation(
             project_id=project_id, user_id=user_id
@@ -131,7 +131,17 @@ async def get_computation_task(
         return None
 
 
+def _skip_if_pipeline_not_found(exception: BaseException) -> bool:
+    assert isinstance(exception, DirectorV2ServiceError)  # nosec
+    return exception.status == status.HTTP_404_NOT_FOUND
+
+
 @log_decorator(logger=_logger)
+@suppress_exceptions(
+    (DirectorV2ServiceError,),
+    reason="silence in case the pipeline does not exist",
+    predicate=_skip_if_pipeline_not_found,
+)
 async def stop_pipeline(
     app: web.Application, *, user_id: PositiveInt, project_id: ProjectID
 ):