This library makes it easier to support file uploads to your federated micro-services. It uses the Apollo server's solution. It works by simple redirecting the file uploaded stream to the micro-service. This package do not use third-party services to send the package to your micro-services.

By default the FileUploadDataSource will use chunked transfers and we advice that you do not change this setup. However, for some reason you can't support this kind of transfer one can provide the useChunkedTransfer option to the FileUploadDataSource constructor as false to do not use chunked transfer (See the example below on how to set this property). Be advised once again, that this can lead to DDOS attacks.

On your Gateway you must add the FileUploadDataSource in order to the micro-service be able to receive the uploaded file(s).

import { ApolloServer } from 'apollo-server';
import { ApolloGateway } from '@apollo/gateway';
import FileUploadDataSource from '@profusion/apollo-federation-upload';

const runServer = async () => {
  const server = new ApolloServer({
    gateway: new ApolloGateway({
      // Add this line in order to support file uploads.
      buildService: ({ url }) => new FileUploadDataSource({ url, useChunkedTransfer: true }),
      serviceList: [
        /* The services ... */
      ],
    }),
    subscriptions: false,
  });

  const { url } = await server.listen();

  console.log(`🚀  Server ready at ${url}`);
};

runServer().catch(error => {
  console.error('💥  Failed to start server:', error);
  process.exit(1);
});