kaxil commented on a change in pull request #6376: [AIRFLOW-5705] Add secrets backend and support for AWS SSM URL: https://github.com/apache/airflow/pull/6376#discussion_r393586971
########## File path: airflow/providers/amazon/aws/secrets/ssm.py ########## @@ -0,0 +1,91 @@ +# +# 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 connections from AWS SSM Parameter Store +""" +from typing import List, Optional + +import boto3 + +from airflow.models import Connection +from airflow.secrets import CONN_ENV_PREFIX, BaseSecretsBackend + + +class AwsSsmSecretsBackend(BaseSecretsBackend): + """ + Retrieves Connection object from AWS SSM Parameter Store + + Configurable via ``airflow.cfg`` like so: + + .. code-block:: ini + + [secrets] + backend = airflow.providers.amazon.aws.secrets.ssm.AwsSsmSecretsBackend + backend_kwargs = {"prefix": "/airflow", "profile_name": null} + + For example, if ssm path is ``/airflow/AIRFLOW_CONN_SMTP_DEFAULT``, this would be accessible if you + provide ``{"prefix": "/airflow"}`` and request conn_id ``smtp_default``. + + """ + + def __init__(self, prefix: str = '/airflow', profile_name: Optional[str] = None, **kwargs): + self._prefix = prefix + self.profile_name = profile_name + super().__init__(**kwargs) + + @property + def prefix(self) -> str: + """ + Ensures that there is no trailing slash. + """ + return self._prefix.rstrip("/") + + def build_ssm_path(self, conn_id: str): + """ + Given conn_id, build SSM path. + Assumes connection params use same naming convention as env vars, but may have arbitrary prefix. + + :param conn_id: connection id + """ + param_name = (CONN_ENV_PREFIX + conn_id).upper() + param_path = self.prefix + "/" + param_name + return param_path + + def get_conn_uri(self, conn_id: str): + """ + Get param value + + :param conn_id: connection id + """ + session = boto3.Session(profile_name=self.profile_name) + client = session.client("ssm") + response = client.get_parameter( + Name=self.build_ssm_path(conn_id=conn_id), WithDecryption=True + ) + value = response["Parameter"]["Value"] + return value Review comment: Raises an error if the Parameter is not found. ---------------------------------------------------------------- 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
