aws-swf-lambda-example

Example Go code that runs in AWS Simple Workflow Service and Lambda functions

Overview

This repo contains code I have developed while learning Amazon Web Services Simple Workflow Service.

It contains a Go code decider that makes decisions based on business logic and a Go based Lambda function to simulate real world work taking place.

Contents

decider/

This directory contains a Go language decider that polls the AWS SWF for any required decisions and then applies business logic to decide which tasks to run next.

lambda-activity/

This directory contains the code for a Go based Lambda function that simulates real world work

Setup

To run the system you need to:

• Create an IAM role for the Lambda function. See the iam-role.json file under lambda-activity/
• Compile the Lambda code using the buildeme.sh script but do not upload to AWS yet
• Create the Lambda function as described at the top of the buildme.sh script and upload the zip file
• Compile the Go based decider in the decider/ directory
• Update the testit.sh script to use the correct ARN for the Lambda role you created
• Run the testit.sh script and it will start a new SWF workflow then run the decider to process the tasks
• Note that the Lambda function has a randomFail function that inserts random fails into the system to simulate failures

NOTE - This repo contains Go language code but you can not use go get ... to get the code