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Demo: GCP API Gateway fronting a GraphQL API on Cloud Run, secured with Identity-Aware Proxy

This demo is based on the official Google quickstart for API Gateway fronting a Cloud Run instance. Lovingly repurposed from Google with <3 for the benefit of all.

The application itself is based on previous work on cloud-run-ts-apollo-graphql.

The example app is a GraphQL server (Apollo Server 2) that responds to the typical /graphql endpoint, which is also exposed in the API specification (api-spec.yaml).

Prerequisites

  • You have a GCP account
  • You are logged in through your environment
  • You have set your variables as needed in setup.sh

Instructions

  • Run deploy-app.sh to deploy your basic demo application to Cloud Run
  • Set x-google-backend.address in api-spec.yaml to your Cloud Run endpoint (looks similar to https://PROJECT_AND_RANDOM_STRING.a.run.app/graphql)
  • Refer to https://cloud.google.com/iap/docs/app-engine-quickstart#enabling_iap for how to enable IAP. Copy the IAP client ID and set it in x-google-backend.address.jwt_audience in api-spec.yaml.
  • Go to IAP and set up your consent screen if it's not done above. You will most likely use the "External" option. Add a few users (like yourself) that should be granted access. Enable IAP for the web service.
  • Run setup.sh to login, update your gcloud CLI tool and enable required APIs, and then finally deploy the API resources.
  • Visit the application URL. Any requests from an accepted user should go through and the rest should be blocked.

Running locally

Compile and run

Install dependencies, then run npm start to use ts-node to run your code.

References