How to invoke AWS step function using API Gateway

Question

It's given in AWS Documentation that step function can be invoked using HTTP API. Here is the snippet:

Step Functions can be accessed and used with the Step Functions console, the AWS SDKs, or an HTTP API

Apart from this I couldn't find any other information. Does anyone know how to invoke AWS step function using API gateway, similar to the way it invokes Lambda functions?

Answer 1

It is possible to call StepFunction from API Gateway. You can simply follow the steps listed below:

• For Integration Type, choose AWS Service
• For AWS Service, choose Step Functions from the list
• For HTTP Method, choose POST from the list
• For Action Type, choose Use action name
• For Action, type StartExecution
• For Execution Role, type ARN of role with API Gateway trusted identity provider and attached policy AWSStepFunctionsFullAccess