[jira] [Created] (CAMEL-9682) camel-rxjava module should extend Bean Binding to support methods returning Observable

["james strachan (JIRA)" <ji...@apache.org>]

james strachan created CAMEL-9682:
-------------------------------------

             Summary: camel-rxjava module should extend Bean Binding to support methods returning Observable<T>
                 Key: CAMEL-9682
                 URL: https://issues.apache.org/jira/browse/CAMEL-9682
             Project: Camel
          Issue Type: Improvement
            Reporter: james strachan


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/
{code}
public interface MyThing {

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

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

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:

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

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



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