Welcome to your CDK TypeScript project

This is a blank project for CDK development with TypeScript.

The cdk.json file tells the CDK Toolkit how to execute your app.

Useful commands

• npm run build compile typescript to js
• npm run watch watch for changes and compile
• npm run test perform the jest unit tests
• npx cdk deploy deploy this stack to your default AWS account/region
• npx cdk diff compare deployed stack with current state
• npx cdk synth emits the synthesized CloudFormation template

How to test

This CDK project deploys a Lambda Function called "HelloWorld". The state machine just takes a name of a lambda function and tries to invoke it. If it can't, it will open the circuit. If it can, there is no change. Default TTL is 1 minute.

Good Execution

{
    "targetLambda": "HelloWorld"
}

Bad Execution

{
    "targetLambda": "Literally any function that either doesn't exist or the state machine does not have permission to invoke"
}

AWS CLI Good Command

aws [--profile ${profile}] stepfunctions start-sync-execution --step-function-arn ${arn} --input "{\"targetLambda\": \"HelloWorld\"}" | jq

AWS CLI Bad Command

aws [--profile ${profile}] stepfunctions start-sync-execution --step-function-arn ${arn} --input "{\"targetLambda\": \"DNE\"}" | jq