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https://issues.apache.org/jira/browse/AIRFLOW-6586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17098684#comment-17098684
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ASF GitHub Bot commented on AIRFLOW-6586:
-----------------------------------------
mik-laj commented on a change in pull request #7197:
URL: https://github.com/apache/airflow/pull/7197#discussion_r419218559
##########
File path: airflow/sensors/decorators/poke_mode_only.py
##########
@@ -0,0 +1,80 @@
+#
+# 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.
+#
+import inspect
+import os
+from functools import wraps
+
+from airflow.sensors.base_sensor_operator import BaseSensorOperator
+
+
+def poke_mode_only(cls):
+ """
+ Class Decorator for child classes of BaseSensorOperator to indicate
+ that instances of this class are only safe to use poke mode.
+
+ Will decorate all methods in the class to assert they did not change
+ the mode from 'poke'.
+
+ :param cls: BaseSensor class to enforce methods only use 'poke' mode.
+ :type cls: type
+ """
+ def decorate(cls):
+ if not issubclass(cls, BaseSensorOperator):
+ raise ValueError("poke_mode_only decorator should only be "
+ + "applied to subclasses of BaseSensorOperator,"
+ + f" got:{cls}.")
+ for method in inspect.getmembers(cls, inspect.isfunction):
Review comment:
Is it really necessary to decorate all methods? Is it not enough to
create the read-only `poke` attribute?
Something similar to code below:
```
@property
def mode(self):
return "poke"
@mode.setter
def mode(self, value):
if value != "poke":
raise AirflowException()
```
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> GCSUploadSessionCompleteSensor breaks in reschedule mode.
> ---------------------------------------------------------
>
> Key: AIRFLOW-6586
> URL: https://issues.apache.org/jira/browse/AIRFLOW-6586
> Project: Apache Airflow
> Issue Type: Bug
> Components: operators
> Affects Versions: 1.10.3
> Reporter: Jacob Ferriero
> Priority: Minor
>
> This sensor is stateful and loses state between reschedules.
> We should:
> # Warn about this in docstring
> # Add a `poke_mode_only` class decorator for sensors that aren't safe in
> reschedule mode.
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