[GitHub] [airflow] uranusjr commented on issue #16952: Secrets Backend Search Path Ordering/Priority

[GitBox <gi...@apache.org>]

uranusjr commented on issue #16952:
URL: https://github.com/apache/airflow/issues/16952#issuecomment-882207637


   Maybe we should ship a secret backend implementation that allows the user to pass multiple secret backends and search them in that order? Something like:
   
   ```python
   class AggregatedBackend(BaseSecretsBackend):
       def __init__(self, backends: List[str]) -> None:
           super().__init__()
           self._backends = [get_function_from_name(name) for name in backends]
   
       def get_variable(self, key: str) -> Optional[str]:
           for backend in self._backends:
               if (value := backend.get_variable(key)) is not None:
                   return value
   ```
   
   This way the user can do something like
   
   ```ini
   [secrets]
   backend = airflow.secrets.aggregated.AggregatedBackend
   backend_kwargs = {"backends": ["airflow.secrets.environment_variables.EnvironmentVariablesBackend", "my_backend.MyBackend", "airflow.secrets.metastore.MetastoreBackend"]}
   ```


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