rawwar commented on code in PR #42975:
URL: https://github.com/apache/airflow/pull/42975#discussion_r1833640939
##########
airflow/api_fastapi/core_api/routes/public/dag_run.py:
##########
@@ -141,3 +146,48 @@ async def patch_dag_run_state(
dag_run = session.get(DagRun, dag_run.id)
return DAGRunResponse.model_validate(dag_run, from_attributes=True)
+
+
+@dag_run_router.post("/{dag_run_id}/clear",
responses=create_openapi_http_exception_doc([401, 403, 404]))
+async def clear_dag_run(
+ dag_id: str,
+ dag_run_id: str,
+ patch_body: DAGRunClearBody,
+ request: Request,
+ session: Annotated[Session, Depends(get_session)],
+) -> TaskInstanceCollectionResponse | DAGRunResponse:
+ dag_run = session.scalar(select(DagRun).filter_by(dag_id=dag_id,
run_id=dag_run_id))
+ if dag_run is None:
+ raise HTTPException(
+ 404, f"The DagRun with dag_id: `{dag_id}` and run_id:
`{dag_run_id}` was not found"
+ )
+
+ dag: DAG = request.app.state.dag_bag.get_dag(dag_id)
+
+ if patch_body.dry_run:
+ task_instances = dag.clear(
+ start_date=dag_run.logical_date,
+ end_date=dag_run.logical_date,
+ task_ids=None,
+ only_failed=False,
+ dry_run=True,
+ session=session,
+ )
+
+ return TaskInstanceCollectionResponse(
+ task_instances=[
+ TaskInstanceResponse.model_validate(ti, from_attributes=True)
+ for ti in task_instances # type: ignore[union-attr]
Review Comment:
I had to include this type ignore because, mypy was complaining about
task_instances.
`dag.clear` has return type `int | Iterable[TaskInstance]`. `int`'s
causing the problem here
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