| # -*- coding: utf-8 -*- |
| # |
| # 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. |
| # |
| # Note: Any AirflowException raised is expected to cause the TaskInstance |
| # to be marked in an ERROR state |
| """Exceptions used by Airflow""" |
| |
| |
| class AirflowException(Exception): |
| """ |
| Base class for all Airflow's errors. |
| Each custom exception should be derived from this class |
| """ |
| status_code = 500 |
| |
| |
| class AirflowBadRequest(AirflowException): |
| """Raise when the application or server cannot handle the request""" |
| status_code = 400 |
| |
| |
| class AirflowNotFoundException(AirflowException): |
| """Raise when the requested object/resource is not available in the system""" |
| status_code = 404 |
| |
| |
| class AirflowConfigException(AirflowException): |
| """Raise when there is configuration problem""" |
| |
| |
| class AirflowSensorTimeout(AirflowException): |
| """Raise when there is a timeout on sensor polling""" |
| |
| |
| class AirflowRescheduleException(AirflowException): |
| """ |
| Raise when the task should be re-scheduled at a later time. |
| |
| :param reschedule_date: The date when the task should be rescheduled |
| :type reschedule_date: datetime.datetime |
| """ |
| def __init__(self, reschedule_date): |
| self.reschedule_date = reschedule_date |
| |
| |
| class AirflowTaskTimeout(AirflowException): |
| """Raise when the task execution times-out""" |
| |
| |
| class AirflowWebServerTimeout(AirflowException): |
| """Raise when the web server times out""" |
| |
| |
| class AirflowSkipException(AirflowException): |
| """Raise when the task should be skipped""" |
| |
| |
| class AirflowDagCycleException(AirflowException): |
| """Raise when there is a cycle in Dag definition""" |
| |
| |
| class DagNotFound(AirflowNotFoundException): |
| """Raise when a DAG is not available in the system""" |
| |
| |
| class DagRunNotFound(AirflowNotFoundException): |
| """Raise when a DAG Run is not available in the system""" |
| |
| |
| class DagRunAlreadyExists(AirflowBadRequest): |
| """Raise when creating a DAG run for DAG which already has DAG run entry""" |
| |
| |
| class DagFileExists(AirflowBadRequest): |
| """Raise when a DAG ID is still in DagBag i.e., DAG file is in DAG folder""" |
| |
| |
| class TaskNotFound(AirflowNotFoundException): |
| """Raise when a Task is not available in the system""" |
| |
| |
| class TaskInstanceNotFound(AirflowNotFoundException): |
| """Raise when a Task Instance is not available in the system""" |
| |
| |
| class PoolNotFound(AirflowNotFoundException): |
| """Raise when a Pool is not available in the system""" |
| |
| |
| class NoAvailablePoolSlot(AirflowException): |
| """Raise when there is not enough slots in pool""" |
| |
| |
| class DagConcurrencyLimitReached(AirflowException): |
| """Raise when DAG concurrency limit is reached""" |
| |
| |
| class TaskConcurrencyLimitReached(AirflowException): |
| """Raise when task concurrency limit is reached""" |