Source code for airflow.providers.amazon.aws.secrets.secrets_manager

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"""Objects relating to sourcing secrets from AWS Secrets Manager"""

from typing import Optional

import boto3
from cached_property import cached_property

from airflow.secrets import BaseSecretsBackend
from airflow.utils.log.logging_mixin import LoggingMixin


[docs]class SecretsManagerBackend(BaseSecretsBackend, LoggingMixin): """ Retrieves Connection or Variables from AWS Secrets Manager Configurable via ``airflow.cfg`` like so: .. code-block:: ini [secrets] backend = airflow.providers.amazon.aws.secrets.secrets_manager.SecretsManagerBackend backend_kwargs = {"connections_prefix": "airflow/connections"} For example, if secrets prefix is ``airflow/connections/smtp_default``, this would be accessible if you provide ``{"connections_prefix": "airflow/connections"}`` and request conn_id ``smtp_default``. If variables prefix is ``airflow/variables/hello``, this would be accessible if you provide ``{"variables_prefix": "airflow/variables"}`` and request variable key ``hello``. And if config_prefix is ``airflow/config/sql_alchemy_conn``, this would be accessible if you provide ``{"config_prefix": "airflow/config"}`` and request config key ``sql_alchemy_conn``. You can also pass additional keyword arguments like ``aws_secret_access_key``, ``aws_access_key_id`` or ``region_name`` to this class and they would be passed on to Boto3 client. :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 AWS Secrets Manager :type connections_prefix: str :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 AWS Secrets Manager :type variables_prefix: str :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 AWS Secrets Manager :type config_prefix: str :param profile_name: The name of a profile to use. If not given, then the default profile is used. :type profile_name: str :param sep: separator used to concatenate secret_prefix and secret_id. Default: "/" :type sep: str """ def __init__( self, connections_prefix: str = 'airflow/connections', variables_prefix: str = 'airflow/variables', config_prefix: str = 'airflow/config', profile_name: Optional[str] = None, sep: str = "/", **kwargs, ): super().__init__() if connections_prefix is not None: self.connections_prefix = connections_prefix.rstrip("/") else: self.connections_prefix = connections_prefix if variables_prefix is not None: self.variables_prefix = variables_prefix.rstrip('/') else: self.variables_prefix = variables_prefix if config_prefix is not None: self.config_prefix = config_prefix.rstrip('/') else: self.config_prefix = config_prefix self.profile_name = profile_name self.sep = sep self.kwargs = kwargs @cached_property
[docs] def client(self): """Create a Secrets Manager client""" session = boto3.session.Session( profile_name=self.profile_name, ) return session.client(service_name="secretsmanager", **self.kwargs)
[docs] def get_conn_uri(self, conn_id: str) -> Optional[str]: """ Get Connection Value :param conn_id: connection id :type conn_id: str """ if self.connections_prefix is None: return None return self._get_secret(self.connections_prefix, conn_id)
[docs] def get_variable(self, key: str) -> Optional[str]: """ Get Airflow Variable :param key: Variable Key :return: Variable Value """ if self.variables_prefix is None: return None return self._get_secret(self.variables_prefix, key)
[docs] def get_config(self, key: str) -> Optional[str]: """ Get Airflow Configuration :param key: Configuration Option Key :return: Configuration Option Value """ if self.config_prefix is None: return None return self._get_secret(self.config_prefix, key)
[docs] def _get_secret(self, path_prefix: str, secret_id: str) -> Optional[str]: """ Get secret value from Secrets Manager :param path_prefix: Prefix for the Path to get Secret :type path_prefix: str :param secret_id: Secret Key :type secret_id: str """ secrets_path = self.build_path(path_prefix, secret_id, self.sep) try: response = self.client.get_secret_value( SecretId=secrets_path, ) return response.get('SecretString') except self.client.exceptions.ResourceNotFoundException: self.log.debug( "An error occurred (ResourceNotFoundException) when calling the " "get_secret_value operation: " "Secret %s not found.", secrets_path, ) return None

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