airflow systems_manager 源码
airflow systems_manager 代码
文件路径:/airflow/providers/amazon/aws/secrets/systems_manager.py
#
# 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 __future__ import annotations
import warnings
from airflow.compat.functools import cached_property
from airflow.providers.amazon.aws.utils import get_airflow_version, trim_none_values
from airflow.secrets import BaseSecretsBackend
from airflow.utils.log.logging_mixin import LoggingMixin
class SystemsManagerParameterStoreBackend(BaseSecretsBackend, LoggingMixin):
"""
Retrieves Connection or Variables from AWS SSM Parameter Store
Configurable via ``airflow.cfg`` like so:
.. code-block:: ini
[secrets]
backend = airflow.providers.amazon.aws.secrets.systems_manager.SystemsManagerParameterStoreBackend
backend_kwargs = {"connections_prefix": "/airflow/connections", "profile_name": null}
For example, if ssm path is ``/airflow/connections/smtp_default``, this would be accessible
if you provide ``{"connections_prefix": "/airflow/connections"}`` and request conn_id ``smtp_default``.
And if ssm path is ``/airflow/variables/hello``, this would be accessible
if you provide ``{"variables_prefix": "/airflow/variables"}`` and request conn_id ``hello``.
: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 SSM Parameter Store.
: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 SSM Parameter Store.
: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 SSM Parameter Store.
You can also pass additional keyword arguments listed in AWS Connection Extra config
to this class, and they would be used for establish connection and passed on to Boto3 client.
.. code-block:: ini
[secrets]
backend = airflow.providers.amazon.aws.secrets.systems_manager.SystemsManagerParameterStoreBackend
backend_kwargs = {"connections_prefix": "airflow/connections", "region_name": "eu-west-1"}
.. seealso::
:ref:`howto/connection:aws:configuring-the-connection`
"""
def __init__(
self,
connections_prefix: str = '/airflow/connections',
variables_prefix: str = '/airflow/variables',
config_prefix: str = '/airflow/config',
**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 = kwargs.get("profile_name", None)
# Remove client specific arguments from kwargs
self.api_version = kwargs.pop("api_version", None)
self.use_ssl = kwargs.pop("use_ssl", None)
self.kwargs = kwargs
@cached_property
def client(self):
"""Create a SSM client"""
from airflow.providers.amazon.aws.hooks.base_aws import SessionFactory
from airflow.providers.amazon.aws.utils.connection_wrapper import AwsConnectionWrapper
conn_id = f"{self.__class__.__name__}__connection"
conn_config = AwsConnectionWrapper.from_connection_metadata(conn_id=conn_id, extra=self.kwargs)
client_kwargs = trim_none_values(
{
"region_name": conn_config.region_name,
"verify": conn_config.verify,
"endpoint_url": conn_config.endpoint_url,
"api_version": self.api_version,
"use_ssl": self.use_ssl,
}
)
session = SessionFactory(conn=conn_config).create_session()
return session.client(service_name="ssm", **client_kwargs)
def get_conn_value(self, conn_id: str) -> str | None:
"""
Get param value
:param conn_id: connection id
"""
if self.connections_prefix is None:
return None
return self._get_secret(self.connections_prefix, conn_id)
def get_conn_uri(self, conn_id: str) -> str | None:
"""
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
"""
if get_airflow_version() >= (2, 3):
warnings.warn(
f"Method `{self.__class__.__name__}.get_conn_uri` is deprecated and will be removed "
"in a future release. Please use method `get_conn_value` instead.",
DeprecationWarning,
stacklevel=2,
)
return self.get_conn_value(conn_id)
def get_variable(self, key: str) -> str | None:
"""
Get Airflow Variable from Environment Variable
:param key: Variable Key
:return: Variable Value
"""
if self.variables_prefix is None:
return None
return self._get_secret(self.variables_prefix, key)
def get_config(self, key: str) -> str | None:
"""
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)
def _get_secret(self, path_prefix: str, secret_id: str) -> str | None:
"""
Get secret value from Parameter Store.
:param path_prefix: Prefix for the Path to get Secret
:param secret_id: Secret Key
"""
ssm_path = self.build_path(path_prefix, secret_id)
try:
response = self.client.get_parameter(Name=ssm_path, WithDecryption=True)
return response["Parameter"]["Value"]
except self.client.exceptions.ParameterNotFound:
self.log.debug("Parameter %s not found.", ssm_path)
return None
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦