[errai-dev] Client interceptors - jax-rs

[Eric Wittmann]

I think I'm a fan of option #2.  To be clear, would it look like this 
(for example)?

@Templated
@Page(path="dashboard", role=DefaultPage.class)
@Dependent
public class DashboardPage extends AbstractPage {

     @Inject
     @Interceptors({ AuthInterceptor.class, ReqHeaderInterceptor.class })
     private Caller<IMyRestService> caller;

}

That seems pretty slick to me.  It does mean that if I inject that 
Caller in multiple places I need to specify the interceptor list each 
time.  But that actually sounds pretty powerful to me.

Would the interceptors be managed beans (i.e. injected into the Caller)? 
  My use case would be that I'd have an AuthenticationInterceptor for my 
Caller, but I would want to @Inject a configuration bean of some kind 
into it, because I might be using either BASIC auth *or* Bearer Token 
auth, and the managed configuration bean is what knows which it is.

-Eric

PS: adding the errai-dev list to the conversation, which is what I 
should have done originally

On 2/7/2014 11:35 AM, Christian Sadilek wrote:
> Yeah, I had thought about that as well before but couldn't decide what's best:
>
> - Add a mapping to ErraiApp.properties
> - Add an annotation/qualifier @Interceptors(...) that can be used when injecting a Caller<?>
> - Add a parameter to call() that takes a List of interceptors
>
> Definitely a good feature to have. Wdyt?
>
> Cheers,
> Christian
>
> On 2014-02-07, at 10:06 AM, Eric Wittmann <eric.wittmann at redhat.com> wrote:
>
>> I was reading the documentation re: client interceptors for jax-rs in Errai and I was wondering what you thought about adding a mechanism to allow client interceptors to be defined either globally or in some way that doesn't require modifying the JAX-RS interface (to add annotations).  I'm thinking that in some cases a developer might be creating a UI and invoking REST services where they have access to the jax-rs interfaces but do not have write privs.  In other words they can consume them but not modify them.  In that case it might be nice to able to apply interceptors in some other way.
>>
>> Thoughts?
>>
>> -Eric
>