How would you adapt it for apollo router?

[dulguun0225]

For example, makeSubscriptionSchema function takes in gatewaySchema: GraphQLSchema. How should I create gatewaySchema schema from supergraph.graphql?

Is there a much better way to handle subscription now?

[bradens]

Wondering this myself, how should I configure this subscription code such that it can pull the types from my router instance?

[dulguun0225]

@bradens this is roughly how I'm handling it:

import { makeExecutableSchema } from '@graphql-tools/schema';
const { makeSubscriptionSchema } = require('esm')(module)(
  'federation-subscription-tools'
);

const supergraph = fs.readFileSync(supergraphPath).toString();
const superGraphScheme = makeExecutableSchema({
  typeDefs: supergraph,
  resolvers: {}
});
const schema = makeSubscriptionSchema({
  gatewaySchema: superGraphScheme,
  typeDefs,
  resolvers
});