:py:mod:`airflow.providers.microsoft.azure.secrets.key_vault`
=============================================================

.. py:module:: airflow.providers.microsoft.azure.secrets.key_vault


Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   airflow.providers.microsoft.azure.secrets.key_vault.AzureKeyVaultBackend


.. py:class:: AzureKeyVaultBackend(connections_prefix = 'airflow-connections', variables_prefix = 'airflow-variables', config_prefix = 'airflow-config', vault_url = '', sep = '-', **kwargs)

   Bases: :py:obj:`airflow.secrets.BaseSecretsBackend`, :py:obj:`airflow.utils.log.logging_mixin.LoggingMixin`

   Retrieves Airflow Connections or Variables from Azure Key Vault secrets.

   The Azure Key Vault can be configured as a secrets backend in the ``airflow.cfg``:

   .. code-block:: ini

       [secrets]
       backend = airflow.providers.microsoft.azure.secrets.key_vault.AzureKeyVaultBackend
       backend_kwargs = {"connections_prefix": "airflow-connections", "vault_url": "<azure_key_vault_uri>"}

   For example, if the secrets prefix is ``airflow-connections-smtp-default``, this would be accessible
   if you provide ``{"connections_prefix": "airflow-connections"}`` and request conn_id ``smtp-default``.
   And if variables prefix is ``airflow-variables-hello``, this would be accessible
   if you provide ``{"variables_prefix": "airflow-variables"}`` and request variable key ``hello``.

   For client authentication, the ``DefaultAzureCredential`` from the Azure Python SDK is used as
   credential provider, which supports service principal, managed identity and user credentials

   For example, to specify a service principal with secret you can set the environment variables
   ``AZURE_TENANT_ID``, ``AZURE_CLIENT_ID`` and ``AZURE_CLIENT_SECRET``.

   .. seealso::
       For more details on client authentication refer to the ``DefaultAzureCredential`` Class reference:
       https://docs.microsoft.com/en-us/python/api/azure-identity/azure.identity.defaultazurecredential?view=azure-python

   :param connections_prefix: Specifies the prefix of the secret to read to get Connections
       If set to None (null), requests for connections will not be sent to Azure Key Vault
   :param variables_prefix: Specifies the prefix of the secret to read to get Variables
       If set to None (null), requests for variables will not be sent to Azure Key Vault
   :param config_prefix: Specifies the prefix of the secret to read to get Variables.
       If set to None (null), requests for configurations will not be sent to Azure Key Vault
   :param vault_url: The URL of an Azure Key Vault to use
   :param sep: separator used to concatenate secret_prefix and secret_id. Default: "-"

   .. py:method:: client(self)

      Create a Azure Key Vault client.


   .. py:method:: get_conn_value(self, conn_id)

      Get a serialized representation of Airflow Connection from an Azure Key Vault secret

      :param conn_id: The Airflow connection id to retrieve


   .. py:method:: get_conn_uri(self, conn_id)

      Return URI representation of Connection conn_id.

      As of Airflow version 2.3.0 this method is deprecated.

      :param conn_id: the connection id
      :return: deserialized Connection


   .. py:method:: get_variable(self, key)

      Get an Airflow Variable from an Azure Key Vault secret.

      :param key: Variable Key
      :return: Variable Value


   .. py:method:: get_config(self, key)

      Get Airflow Configuration

      :param key: Configuration Option Key
      :return: Configuration Option Value


   .. py:method:: build_path(path_prefix, secret_id, sep = '-')
      :staticmethod:

      Given a path_prefix and secret_id, build a valid secret name for the Azure Key Vault Backend.
      Also replaces underscore in the path with dashes to support easy switching between
      environment variables, so ``connection_default`` becomes ``connection-default``.

      :param path_prefix: The path prefix of the secret to retrieve
      :param secret_id: Name of the secret
      :param sep: Separator used to concatenate path_prefix and secret_id