ashb commented on a change in pull request #8186: Add support for AWS Secrets Manager as Secrets Backend URL: https://github.com/apache/airflow/pull/8186#discussion_r405431426
########## File path: airflow/providers/amazon/aws/secrets/secrets_manager.py ########## @@ -0,0 +1,129 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +""" +Objects relating to sourcing secrests 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 + + +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``. + And if variables prefix is ``airflow/variables/hello``, this would be accessible + if you provide ``{"variables_prefix": "airflow/variables"}`` and request variable key ``hello``. + + 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. + :type connections_prefix: str + :param variables_prefix: Specifies the prefix of the secret to read to get Variables. + :type variables_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', + profile_name: Optional[str] = None, + sep: str = "/", + **kwargs + ): + super().__init__(**kwargs) + self.connections_prefix = connections_prefix.rstrip("/") + self.variables_prefix = variables_prefix.rstrip('/') + self.profile_name = profile_name + self.sep = sep + self.kwargs = kwargs + + @cached_property + 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) + + def get_conn_uri(self, conn_id: str) -> Optional[str]: + """ + Get Connection Value + + :param conn_id: connection id + :type conn_id: str + """ + return self._get_secret(self.connections_prefix, conn_id) + + def get_variable(self, key: str) -> Optional[str]: + """ + Get Airflow Variable from Environment Variable + + :param key: Variable Key + :return: Variable Value + """ + return self._get_secret(self.variables_prefix, key) + + 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, + ) + if 'SecretString' in response: + secret_value = response['SecretString'] + else: + secret_value = None + return secret_value + except self.client.exceptions.ResourceNotFoundException: + self.log.info( Review comment: Do we want to log this every time? It seems overkill at info level. _Maybe_. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
