Update documentation to refer to the Apollo Federation example with Spring for GraphQL

[ragavlatha]

Is there any example project with Spring GraphQL on how to configure the service inorder to be used with a federation library like Apollo ?

[MariuszCwikla]

@ragavlatha It's pretty straightforward. Have a look at my repository that I used few weeks ago to report an issue https://github.com/MariuszCwikla/spring-graphql-federation-union-issue

@Bean 
public GraphQlSourceBuilderCustomizer exposeFederation () {
return builder -> {
	builder.schemaFactory((registry, wiring)-> 
			Federation.transform(registry, wiring).build()
		);
       };
}

This repo does not present how to build federated supergraph but actually it's straighforward to do it with Apollo Router.

[rstoyanchev]

We don't have an example, but would be good to have it, possibly at apollographql/federation-jvm.

[dariuszkuc]

Hello 👋
I created an example integration under https://github.com/apollographql/federation-jvm-spring-example.

[bishopmate]

https://github.com/apollographql/federation-jvm-spring-example link is broken @dariuszkuc

[rstoyanchev]

@dariuszkuc a belated thanks for putting that together! @bishopmate the link does work for me. I'm going to turn this into a documentation task to refer to the above sample from our reference docs.