Step Function Versions and Aliases

This project is the sample that supports this blog post

Requirements

You'll need

• Python
• AWS SAM CLI
• An AWS Account

Testing

sam deploy

Once the infrastructure is deployed, you can send a sample execution

aws stepfunctions start-execution --state-machine-arn arn:aws:states:<region>:<account-id>:stateMachine:SampleAliasMachine --input "{\"type\": \"B\"}"

Next, change the statemachine\alias.asl.json to make "B" fail the State Machine.

Re-run

sam deploy

In a separate window, run

aws stepfunctions start-execution --state-machine-arn arn:aws:states:<region>:<account-id>:stateMachine:SampleAliasMachine --input "{\"type\": \"B\"}"

The deployment will fail and rollback to Version 1.