javax.ws.rs.client.ClientBuilder not working from a EJB Timer Service?

[rsoika]

Hi,

today I asked a question in the Wildfly forum concerning a RestEasy Jax-rs Client problem.

See: https://developer.jboss.org/thread/278754

I am not sure if this place is the better/right place to ask the question? So I will try to describe the problem:

I am running a EJB timer service in Wildfly 13. In this EJB I want to connect to a Rest Service via a  javax.ws.rs.client.Client. So the implementation is RestEasy. But when I try to get a new Client during the @timout method:

@Timeout
void onTimeout(javax.ejb.Timer timer) throws Exception {
...
Client client = ClientBuilder.newClient();  
...

I got the  exception:

org.jboss.resteasy.spi.LoggableFailure: RESTEASY003880: Unable to find contextual data of type: javax.servlet.ServletContext  

In the same stateless EJB this works fine in a method annotated with @Path:

@GET
@Path("/")
public String ping() {
Client client = ClientBuilder.newClient();
....
}

How can I solve the missing javax.servlet.ServletContext? Why is a java ServletContext necessary to build a Jax-rs client? The Jersey Implementation does not show this behavior.

Thanks for any help

===

Ralph