ashb commented on a change in pull request #12629: URL: https://github.com/apache/airflow/pull/12629#discussion_r530617128
########## File path: airflow/upgrade/rules/custom_operator_metaclass_rule.py ########## @@ -0,0 +1,58 @@ +# 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 absolute_import + +from airflow.models.dagbag import DagBag +from airflow.upgrade.rules.base_rule import BaseRule +from airflow.utils.db import provide_session + + +def check_task_for_metaclasses(task): + class_type = type(task.__class__) + if class_type != type: + res = ( + "Class {class_name} contained invalid custom metaclass " + "{metaclass_name}. Custom metaclasses for operators are not " + "allowed in Airflow 2.0. Please remove this custom metaclass.".format( + class_name=task.__class__, metaclass_name=class_type + ) + ) + return res + else: + return None + + +class BaseOperatorMetaclassRule(BaseRule): + title = "Ensure users are not using custom metaclasses in custom operators" + + description = """\ +In Airflow 2.0, we require that all custom operators use the BaseOperatorMeta metaclass.\ +To ensure this, we can no longer allow custom metaclasses in custom operators. + """ + + @provide_session + def check(self, session=None): + dagbag = DagBag(include_examples=True) Review comment: ```suggestion dagbag = DagBag(include_examples=Flase) ``` No point checking example dags -- that's just extra work ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
