Source code for airflow.secrets.base_secrets

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from __future__ import annotations

from abc import ABC
from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from airflow.models.connection import Connection



[docs]
class BaseSecretsBackend(ABC):
    """Abstract base class to retrieve Connection object given a conn_id or Variable given a key."""

    @staticmethod

[docs]
    def build_path(path_prefix: str, secret_id: str, sep: str = "/") -> str:
        """
        Given conn_id, build path for Secrets Backend.

        :param path_prefix: Prefix of the path to get secret
        :param secret_id: Secret id
        :param sep: separator used to concatenate connections_prefix and conn_id. Default: "/"
        """
        return f"{path_prefix}{sep}{secret_id}"



[docs]
    def get_conn_value(self, conn_id: str) -> str | None:
        """
        Retrieve from Secrets Backend a string value representing the Connection object.

        If the client your secrets backend uses already returns a python dict, you should override
        ``get_connection`` instead.

        :param conn_id: connection id
        """
        raise NotImplementedError



[docs]
    def deserialize_connection(self, conn_id: str, value: str) -> Connection:
        """
        Given a serialized representation of the airflow Connection, return an instance.

        Looks at first character to determine how to deserialize.

        :param conn_id: connection id
        :param value: the serialized representation of the Connection object
        :return: the deserialized Connection
        """
        from airflow.models.connection import Connection

        value = value.strip()
        if value[0] == "{":
            return Connection.from_json(conn_id=conn_id, value=value)
        else:
            return Connection(conn_id=conn_id, uri=value)



[docs]
    def get_connection(self, conn_id: str) -> Connection | None:
        """
        Return connection object with a given ``conn_id``.

        Tries ``get_conn_value`` first and if not implemented, tries ``get_conn_uri``

        :param conn_id: connection id
        """
        value = self.get_conn_value(conn_id=conn_id)

        if value:
            return self.deserialize_connection(conn_id=conn_id, value=value)
        else:
            return None



[docs]
    def get_variable(self, key: str) -> str | None:
        """
        Return value for Airflow Variable.

        :param key: Variable Key
        :return: Variable Value
        """
        raise NotImplementedError()



[docs]
    def get_config(self, key: str) -> str | None:
        """
        Return value for Airflow Config Key.

        :param key: Config Key
        :return: Config Value
        """
        return None