This project shows you how to setup an S3 trigger whenever an image is added to an S3 bucket. The trigger will invoke a Lambda function. This Lambda function will call AWS Rekognition, and output the results in the same S3 bucket as a JSON file.

1. Clone this repo!
2. yarn to build everything.
3. Go to AWS Console.
4. Create a Node.js 8.10 Lambda function called "rekognize" with dummy Javascript. When you create the function, add a Role giving full access to CloudWatch, Rekognition, and S3. Bump up the timeout to 30 seconds.
5. yarn run deploy to deploy our code to this new Lambda function!
6. Go to your S3 bucket. We are going to add a trigger so that our function fires whenever a png image is added. Click the "Properties" tab. Expand the "Events" panel. Add a Lambda trigger that should look like this:
7. Test it! Upload a png image to the S3 bucket. In a moment or so, you will see a JSON file with the results. Cool!