Sample AWS Step Function with CDK

This is a project used to experiment and learn how to use AWS Step Functions with/and CDK.

The logic of the app is mostly stupid, the components chosen (e.g. Fargate) does not make sense in most of the cases. They are chosen to experiment how to use different components.

The CDK app contains at least the following cases

• State machine with parallel execution, branching and some retries
• Typescript lambda step with dependencies, built and deployed with CDK
• Python lambda step with dependencies, built and deployed with CDK
• Fargate Step, deployed with CDK (uses ECR created by CDK bootstrap)
• Integration tests for the Step Function

TODO Add step function graph with component icons.

Installation

npm install

Deployment

1. Create .env file with variable STACK_NAME
2. npx cdk deploy

Tests

Test generated infrastructure

npm run test-infra

Integration tests

Get State Machine ARN for integration test to your .env file:

npm run sync-env

Run integration tests:

run run test-integration

Linting

npm run lint

Remove deployment

npx cdk destroy