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

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"""This module contains AWS CloudFormation Hook"""
from typing import Optional, Union

from boto3 import client, resource
from botocore.exceptions import ClientError

from airflow.providers.amazon.aws.hooks.base_aws import AwsBaseHook


[docs]class AWSCloudFormationHook(AwsBaseHook): """ Interact with AWS CloudFormation. 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): super().__init__(client_type='cloudformation', *args, **kwargs)
[docs] def get_stack_status(self, stack_name: Union[client, resource]) -> Optional[dict]: """Get stack status from CloudFormation.""" self.log.info('Poking for stack %s', stack_name) try: stacks = self.get_conn().describe_stacks(StackName=stack_name)['Stacks'] return stacks[0]['StackStatus'] except ClientError as e: if 'does not exist' in str(e): return None else: raise e
[docs] def create_stack(self, stack_name: str, params: dict) -> None: """ Create stack in CloudFormation. :param stack_name: stack_name. :type stack_name: str :param params: parameters to be passed to CloudFormation. :type params: dict """ if 'StackName' not in params: params['StackName'] = stack_name self.get_conn().create_stack(**params)
[docs] def delete_stack(self, stack_name: str, params: Optional[dict] = None) -> None: """ Delete stack in CloudFormation. :param stack_name: stack_name. :type stack_name: str :param params: parameters to be passed to CloudFormation (optional). :type params: dict """ params = params or {} if 'StackName' not in params: params['StackName'] = stack_name self.get_conn().delete_stack(**params)

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