[jira] [Closed] (AIRFLOW-1516) Potential uncaught errors when getting fernet object in airflow/models.py

["Edgar Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-1516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edgar Rodriguez closed AIRFLOW-1516.
------------------------------------
    Resolution: Fixed

> Potential uncaught errors when getting fernet object in airflow/models.py
> -------------------------------------------------------------------------
>
>                 Key: AIRFLOW-1516
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1516
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: Edgar Rodriguez
>            Assignee: Edgar Rodriguez
>
> There are unhandled cases for exceptions when importing fernet in `models.py`. This seems to be a remanent of a previous refactor, replacing logic that would depend on the definition of a global variable for Fernet if it was imported correctly.
> Lazy-loading fernet into a function won't have the same behavior and would raise an ImportError instead.
> Code like: 
> {code}
>     def set_val(self, value):
>         if value:
>             try:
>                 fernet = get_fernet()
>                 self._val = fernet.encrypt(bytes(value, 'utf-8')).decode()
>                 self.is_encrypted = True
>             except NameError:
>                 self._val = value
>                 self.is_encrypted = False
> {code}
> won't catch the right exception since it won't raise {{NameError}}, letting it bubble leading to undetermined behavior.
> Remediation would be to either catch the right exceptions coming out of {{get_fernet()}} function or generally catch all exceptions , given that it's the way other functions are already handling it and the only error handling case here is to not use encryption anyways. 



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