federation.js

import {ApolloServer} from 'apollo-server'
import {ApolloGateway} from '@apollo/gateway'

const monolith_url: string = 'http://monolith:5000/graphql';
const filemanager_url: string = 'http://filemanager:5000/graphql';
const gateway = new ApolloGateway({
    serviceList: [
        { name: 'monolith', url: monolith_url },
        { name: 'filemanager', url: filemanager_url },
    ],
});
const server = new ApolloServer({
    gateway,
    subscriptions: false
});
server.listen(3000).then(({ url }) => {
  console.log(`🚀 Server ready at ${url}`);
});