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