Push results for state machines using DynamoDB and Lambda response streaming function URL
This pattern demonstrates how you can use Lambda response streaming, exposed over HTTP using a function URL, to receive live updates from an asynchronous workflow.
The workflow is triggered by a HTTP POST request to an API Gateway endpoint.
This endpoint triggers an asynchronous execution of a Step Functions Express workflow and returns the execution ARN for the execution and a Lambda Function URL.
The execution ARN can be supplied to the Lambda Function URL as a query parameter via a HTTP GET request to enable the client to receive streaming results in JSON lines format as the asynchronous workflow progresses.
< Back to all workflows
Clone repo
git clone https://github.com/aws-samples/step-functions-workflows-collection/tree/main/async-state-machine-streaming-lambda-results-sam/cd step-functions-workflows-collection/async-state-machine-streaming-lambda-results-sam
Deploy
sam buildsam deploy --guided
Testing
See the GitHub repo for detailed testing instructions.
Cleanup
1. Delete the stack:
sam delete.