uranusjr edited a comment 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"]}
```
We could even introduce some shorthands like
`airflow.EnvironmentVariablesBackend`.
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