uranusjr commented on a change in pull request #21965:
URL: https://github.com/apache/airflow/pull/21965#discussion_r820108710
##########
File path: airflow/api_connexion/endpoints/task_instance_endpoint.py
##########
@@ -86,6 +87,64 @@ def get_task_instance(
RTIF.task_id == TI.task_id,
),
).add_entity(RTIF)
+
+ try:
+ task_instance = query.one_or_none()
+ except MultipleResultsFound:
+ raise NotFound(
+ "Task instance not found", detail="Task instance is mapped, add
the map_index value to the URL"
+ )
+ if task_instance is None:
+ raise NotFound("Task instance not found")
+ if task_instance[0].map_index != -1:
+ raise NotFound(
+ "Task instance not found", detail="Task instance is mapped, add
the map_index value to the URL"
+ )
+
+ return task_instance_schema.dump(task_instance)
+
+
[email protected]_access(
+ [
+ (permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG),
+ (permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG_RUN),
+ (permissions.ACTION_CAN_READ, permissions.RESOURCE_TASK_INSTANCE),
+ ],
+)
+@provide_session
+def get_mapped_task_instance(
+ *,
+ dag_id: str,
+ dag_run_id: str,
+ task_id: str,
+ map_index: int,
+ session: Session = NEW_SESSION,
+) -> APIResponse:
+ """Get task instance"""
+ query = (
+ session.query(TI)
+ .filter(
+ TI.dag_id == dag_id, DR.run_id == dag_run_id, TI.task_id ==
task_id, TI.map_index == map_index
Review comment:
I don’t think there’s an actual difference (we need to join the DagRun
table anyway), but it is just more consistent to always use the fields on the
TI table.
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