[CAMEL-9682] camel-rx module should extend Bean Binding to support methods returning Observable<T>

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Fix Version/s: Future
• Component/s: camel-rx
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: James Strachan
• Created: 08/Mar/16 17:40
• Updated: 02/Sep/22 09:16
• Resolved: 02/Sep/22 09:16

Description

when making asynchronous InOut requests it'd be nice if methods could return Observable<T> so that we could use the RxJava async programming model to process async requests & responses.

e.g. kinda like how folks can use Retrofit for HTTP: http://joluet.github.io/blog/2014/07/07/rxjava-retrofit/

public interface MyThing {

@GET("/session.json")
Observable<LoginResponse> login();

@GET("/user.json")
Observable<UserState> getUserState();
}

to then let you use the normal composition / join / flatMap stuff in RxJava to compose multiple requests across different microservice invocations together with timeouts etc e.g. to compose the latest from 2 calls:

Observable.combineLatest(api.fetchUserProfile(), api.getUserState(),
(user, userStatus) -> new Pair<>(user, userStatus));

Where we'd replace the @GET annotation with a bean binding annotation and a URI parameter to switch to using ActiveMQ or Twitter or whatever