Source code for airflow.providers.amazon.aws.hooks.ssm

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from __future__ import annotations

from airflow.providers.amazon.aws.hooks.base_aws import AwsBaseHook
from airflow.utils.log.secrets_masker import mask_secret
from airflow.utils.types import NOTSET, ArgNotSet


[docs]class SsmHook(AwsBaseHook):
    """
    Interact with Amazon Systems Manager (SSM).
    Provide thin wrapper around :external+boto3:py:class:`boto3.client("ssm") <SSM.Client>`.

    Additional arguments (such as ``aws_conn_id``) may be specified and
    are passed down to the underlying AwsBaseHook.

    .. seealso::
        - :class:`airflow.providers.amazon.aws.hooks.base_aws.AwsBaseHook`
    """

    def __init__(self, *args, **kwargs) -> None:
        kwargs["client_type"] = "ssm"
        super().__init__(*args, **kwargs)

[docs]    def get_parameter_value(self, parameter: str, default: str | ArgNotSet = NOTSET) -> str:
        """
        Returns the value of the provided Parameter or an optional default.
        If value exists, and it is encrypted, then decrypt and mask them for loggers.

        .. seealso::
            - :external+boto3:py:meth:`SSM.Client.get_parameter`

        :param parameter: The SSM Parameter name to return the value for.
        :param default: Optional default value to return if none is found.
        """
        try:
            param = self.conn.get_parameter(Name=parameter, WithDecryption=True)["Parameter"]
            value = param["Value"]
            if param["Type"] == "SecureString":
                mask_secret(value)
            return value
        except self.conn.exceptions.ParameterNotFound:
            if isinstance(default, ArgNotSet):
                raise
            return default