AWS CloudFormation¶

AWS CloudFormation enables you to create and provision AWS infrastructure deployments predictably and repeatedly. It helps you leverage AWS products such as Amazon EC2, Amazon Elastic Block Store, Amazon SNS, Elastic Load Balancing, and Auto Scaling to build highly reliable, highly scalable, cost-effective applications in the cloud without worrying about creating and configuring the underlying AWS infrastructure. AWS CloudFormation enables you to use a template file to create and delete a collection of resources together as a single unit (a stack).

Prerequisite Tasks¶

To use these operators, you must do a few things:

Create necessary resources using AWS Console or AWS CLI.
Install API libraries via pip.
pip install 'apache-airflow[amazon]'
Detailed information is available Installation
Setup Connection.

Operators¶

Create an AWS CloudFormation stack¶

To create a new AWS CloudFormation stack use CloudFormationCreateStackOperator.

tests/system/providers/amazon/aws/example_cloudformation.py[source]

create_stack = CloudFormationCreateStackOperator(
    task_id='create_stack',
    stack_name=CLOUDFORMATION_STACK_NAME,
    cloudformation_parameters=CLOUDFORMATION_CREATE_PARAMETERS,
)

Delete an AWS CloudFormation stack¶

To delete an AWS CloudFormation stack you can use CloudFormationDeleteStackOperator.

tests/system/providers/amazon/aws/example_cloudformation.py[source]

delete_stack = CloudFormationDeleteStackOperator(
    task_id='delete_stack',
    trigger_rule='all_done',
    stack_name=CLOUDFORMATION_STACK_NAME,
)

Sensors¶

Wait on an AWS CloudFormation stack creation state¶

To wait on the state of an AWS CloudFormation stack creation until it reaches a terminal state you can use CloudFormationCreateStackSensor

tests/system/providers/amazon/aws/example_cloudformation.py[source]

wait_for_stack_create = CloudFormationCreateStackSensor(
    task_id='wait_for_stack_create',
    stack_name=CLOUDFORMATION_STACK_NAME,
)

Wait on an AWS CloudFormation stack deletion state¶

To wait on the state of an AWS CloudFormation stack deletion until it reaches a terminal state you can use use CloudFormationDeleteStackSensor

tests/system/providers/amazon/aws/example_cloudformation.py[source]

wait_for_stack_delete = CloudFormationDeleteStackSensor(
    task_id='wait_for_stack_delete',
    trigger_rule='all_done',
    stack_name=CLOUDFORMATION_STACK_NAME,
)

Reference¶

AWS boto3 library documentation for CloudFormation