guan404ming commented on code in PR #50443: URL: https://github.com/apache/airflow/pull/50443#discussion_r2093574505
########## airflow-core/src/airflow/api_fastapi/core_api/services/public/task_instances.py: ########## @@ -0,0 +1,249 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. + +from __future__ import annotations + +import structlog +from fastapi import HTTPException, Query, status +from fastapi.exceptions import RequestValidationError +from pydantic import ValidationError +from pytest import Session +from sqlalchemy import select +from sqlalchemy.orm import joinedload + +from airflow.api_fastapi.common.dagbag import DagBagDep +from airflow.api_fastapi.common.db.common import SessionDep +from airflow.api_fastapi.core_api.datamodels.common import ( + BulkActionNotOnExistence, + BulkActionResponse, + BulkBody, + BulkCreateAction, + BulkDeleteAction, + BulkUpdateAction, +) +from airflow.api_fastapi.core_api.datamodels.task_instances import BulkTaskInstanceBody, PatchTaskInstanceBody +from airflow.api_fastapi.core_api.security import GetUserDep +from airflow.api_fastapi.core_api.services.public.common import BulkService +from airflow.listeners.listener import get_listener_manager +from airflow.models.dag import DAG +from airflow.models.taskinstance import TaskInstance as TI +from airflow.utils.state import TaskInstanceState + +log = structlog.get_logger(__name__) + + +def _patch_ti_validate_request( + dag_id: str, + dag_run_id: str, + task_id: str, + dag_bag: DagBagDep, + body: PatchTaskInstanceBody, + session: SessionDep, + map_index: int | None = -1, + update_mask: list[str] | None = Query(None), +) -> tuple[DAG, list[TI], dict]: + dag = dag_bag.get_dag(dag_id) + if not dag: + raise HTTPException(status.HTTP_404_NOT_FOUND, f"DAG {dag_id} not found") + + if not dag.has_task(task_id): + raise HTTPException(status.HTTP_404_NOT_FOUND, f"Task '{task_id}' not found in DAG '{dag_id}'") + + query = ( + select(TI) + .where(TI.dag_id == dag_id, TI.run_id == dag_run_id, TI.task_id == task_id) + .join(TI.dag_run) + .options(joinedload(TI.rendered_task_instance_fields)) + ) + if map_index is not None: + query = query.where(TI.map_index == map_index) + + tis = session.scalars(query).all() + + err_msg_404 = ( + f"The Task Instance with dag_id: `{dag_id}`, run_id: `{dag_run_id}`, task_id: `{task_id}` and map_index: `{map_index}` was not found", + ) + if len(tis) == 0: + raise HTTPException(status.HTTP_404_NOT_FOUND, err_msg_404) + + fields_to_update = body.model_fields_set + if update_mask: + fields_to_update = fields_to_update.intersection(update_mask) + else: + try: + PatchTaskInstanceBody.model_validate(body) + except ValidationError as e: + raise RequestValidationError(errors=e.errors()) + + return dag, list(tis), body.model_dump(include=fields_to_update, by_alias=True) + + +class BulkTaskInstanceService(BulkService[BulkTaskInstanceBody]): + """Service for handling bulk operations on task instances.""" + + def __init__( + self, + session: Session, + request: BulkBody[BulkTaskInstanceBody], + dag_id: str, + dag_run_id: str, + dag_bag: DagBagDep, + user: GetUserDep, + ): + super().__init__(session, request) + self.dag_id = dag_id + self.dag_run_id = dag_run_id + self.dag_bag = dag_bag + self.user = user + + def categorize_task_instances(self, task_ids: set) -> tuple[dict, set, set]: + """ + Categorize the given task_ids into matched_task_ids and not_found_task_ids based on existing task_ids. + + Existed task instances are returned as a dict of {task_id : TaskInstance}. + + :param task_ids: set of task_ids + :return: tuple of dict of existed task instances, set of matched task_ids, set of not found task_ids + """ + existed_task_instances = self.session.execute(select(TI).filter(TI.task_id.in_(task_ids))).scalars() + existed_task_instances_dict = { + task_instance.task_id: task_instance for task_instance in existed_task_instances + } + matched_task_ids = set(existed_task_instances_dict.keys()) + not_found_task_ids = task_ids - matched_task_ids + return existed_task_instances_dict, matched_task_ids, not_found_task_ids + + def handle_bulk_create( + self, action: BulkCreateAction[BulkTaskInstanceBody], results: BulkActionResponse + ) -> None: + results.errors.append( + { + "error": "Task instances bulk create is not supported", + "status_code": status.HTTP_405_METHOD_NOT_ALLOWED, + } + ) + + def handle_bulk_update( + self, action: BulkUpdateAction[BulkTaskInstanceBody], results: BulkActionResponse + ) -> None: + """Bulk Update Task Instances.""" + to_update_task_ids = {task_instance.task_id for task_instance in action.entities} + _, matched_task_ids, not_found_task_ids = self.categorize_task_instances(to_update_task_ids) + + try: + if action.action_on_non_existence == BulkActionNotOnExistence.FAIL and not_found_task_ids: + raise HTTPException( + status_code=status.HTTP_404_NOT_FOUND, + detail=f"The task instances with these task_ids: {not_found_task_ids} were not found.", + ) + if action.action_on_non_existence == BulkActionNotOnExistence.SKIP: + update_task_ids = matched_task_ids + else: + update_task_ids = to_update_task_ids + + for task_instance in action.entities: + if task_instance.map_index is None: + task_instance.map_index = -1 + + if task_instance.task_id in update_task_ids: + dag, ti, data = _patch_ti_validate_request( + dag_id=self.dag_id, + dag_run_id=self.dag_run_id, + task_id=task_instance.task_id, + dag_bag=self.dag_bag, + body=task_instance, + session=self.session, + map_index=task_instance.map_index, + update_mask=None, + ) Review Comment: Thanks, it helps to make the large func more simple and clear. -- This is an automated message from the Apache Git Service. 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