GraphQL

The GraphQL DataSource allows you to connect any compatible GraphQL Server. WunderGraph supports Queries, Mutations as well as Subscriptions.

To add a GraphQL data source, edit .wundergraph/wundergraph.config.ts and introspect the GraphQL server like the config below.

import { configureWunderGraphApplication, introspect } from '@wundergraph/sdk';

const countries = introspect.graphql({
  apiNamespace: 'countries',
  url: 'https://countries.trevorblades.com/',
});

configureWunderGraphApplication({
  apis: [countries],
});

The GraphQL data source is now added to your virtual graph and you can now write operations against it.

Create a new file Countries.graphql in the operations folder and add the following content:

query {
  countries_countries {
    name
  }
}

Queries are simply HTTP endpoints on your WunderGraph server.

npm run start

curl http://localhost:9991/operations/Countries