Apollo Gateway engineConfig for managed federation

Hi. I have been using Apollo Gateway with managed federation for quite some time now and it used to work very well, but recently, I noticed an error in the gateway like this after upgrading dependencies:

Error checking for changes to service definitions: When serviceListis not set, an Apollo Engine configuration must be provided. See https://www.apollographql.com/docs/apollo-server/federation/managed-federation/ for more information. WhenserviceList is not set, an Apollo Engine configuration must be provided. See https://www.apollographql.com/docs/apollo-server/federation/managed-federation/ for more information.

Which did not come before. Since it is a managed federation, I don’t have a serviceList and this is how I used to initialize my ApolloGateway:

import { ApolloGateway, RemoteGraphQLDataSource } from '@apollo/gateway';
const gateway = new ApolloGateway({
        buildService(service) {
            return new RemoteGraphQLDataSource({
                url: service.url,
                willSendRequest: ({ request, context }) => {
                    request.http.headers.set('authorization', context.token);
                }
            });
        },
        debug: false
    });

const server = new ApolloServer({
        gateway,
        subscriptions: false,
        introspection: true,
        playground: {
            endpoint: config.apollo.playgroundEndpoint
        },
        engine: {
            apiKey: process.env.ENGINE_API_KEY,
            schemaTag: process.env.SCHEMA_TAG
        },
        context: async ({ req }) => {
            // Some code here....
            // Return variables
            return {variables};
        }
    });

May I know what changed I have to make? Looks like there are some new parameters but I don’t find any documentation related to that.

For eg. I am not sure what to give in federationVersion which is a property of ManagedConfig as per this commit: https://github.com/apollographql/apollo-server/commit/f6ba2dea9b4f7c8aa602cad66398685d8bdbc3a2#diff-7b5e66976a637efc823826a985fa8e65

Thanks.

[abernix]

This has been promoted to latest.

[abernix]

Thanks for reporting it! I’ll promote this to latest in a couple hours.