Native Terraform Integration

[mcalhoun]

Use case description

The definitive guide to using Terraform with the Serverless Framework describes the use cases for using Terraform to provision shared, non-app-specific infrastructure. In the guide, it is suggested that Terraform should store its outputs in AWS SSM Parameter Store, however, this requires tight coupling between Terraform modules and Serverless configurations and requires a different solution for each cloud provider.

Proposed solution

My proposal is to add native support to read Terraform outputs directly. In the example below, Serverless would resolve the db_url output from the Terraform module located at /infrastructure-live/prod/us-east-1/prod/data-stores/postgres

 functions:
      darksky:
        handler: handler.darksky
        environment: 
          DARKSKY_DB_URL: ${terraform:/infrastructure-live/prod/us-east-1/prod/data-stores/postgres~db_url}
        events:
          - http:
              path: /darksky/{latitude}/{longitude}
              method: get

[mcalhoun]

Just to be clear, I am volunteering to implement this as well :)

[medikoo]

@mcalhoun great thanks for proposal. I think it makes a big sense to create a plugin for that. Note that plugins can introduce custom variables scopes: https://www.serverless.com/framework/docs/providers/aws/guide/plugins#custom-variable-types