text: # Copyright 1999-2021 Alibaba Group Holding Ltd.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import asyncio
  import contextlib
  import sys
  
  from ... import oscar as mo
  from ...lib.aio import alru_cache
  from ..subtask import SubtaskResult, SubtaskStatus
  from ..task import TaskAPI
  
  
  @alru_cache
  async def _get_task_api(actor: mo.Actor):
      return await TaskAPI.create(getattr(actor, "_session_id"), actor.address)
  
  
  @contextlib.asynccontextmanager
  async def redirect_subtask_errors(actor: mo.Actor, subtasks):
      try:
          yield
      except:  # noqa: E722  # pylint: disable=bare-except
          _, error, traceback = sys.exc_info()
          status = (
              SubtaskStatus.cancelled
              if isinstance(error, asyncio.CancelledError)
              else SubtaskStatus.errored
          )
          task_api = await _get_task_api(actor)
          coros = []
          for subtask in subtasks:
              if subtask is None:  # pragma: no cover
                  continue
              coros.append(
                  task_api.set_subtask_result(
                      SubtaskResult(
                          subtask_id=subtask.subtask_id,
                          session_id=subtask.session_id,
                          task_id=subtask.task_id,
                          progress=1.0,
                          status=status,
                          error=error,
                          traceback=traceback,
                      )
                  )
              )
          await asyncio.wait(coros)
          raise
  