Firebase auth to access Aws DynamoDB

Question

I've to create a json returning api hosted on aws(aws is must can't use Firebase cloud Functions).

User who have logged in on webapp can only access api.

I've found Serverless Api with Aws Api Gateway + DynamoDB which doesn't use Aws Lambda Functions.

Access can be limited using AWS Cognito which isn't free!

FirebaseAuth is free! . So my question is how do I use firebase auth to limit access to above api?

Answer 1

This article Firebase authentication vs AWS Cognito might be of some help.

You need to set up a custom authorizer:

https://aws.amazon.com/blogs/mobile/integrating-amazon-cognito-user-pools-with-api-gateway/ https://blog.novoda.com/custom-authentication-with-amazon-cognito-and-firebase/