Vert.x - Rest / Jax-RS

About

Java - Rest with vertx

The problem

Many wrapper libraries (Rest, CDI, …) use a thread-local context so that the user-code method can look them up when executed.

In the case of RESTEasy, the context holds this information:

• the current request,
• response
• and many other useful information

This works well where you have one thread per request, but stops working if the request:

• spawns other threads (as is the case in many Reactive libraries, such as RxJava)
• gets executed in other threads

because the context is not made available in this thread.

The solution are:

• resteasy_as_vertx_router
• Introducing a reactive_context

JaxRS

Rest Easy as Router

RESTEasy is this case is the router and you can't add a route without it which means that you server is only a rest server.

• Resteasy doc on Vertx
• https://github.com/vert-x3/vertx-examples/tree/master/resteasy-examples

Reactive Context

reactive-contexts propagates the context to multi-thread allowing resteasy to work.

See also the Redpipe framework that is based in this idea.

Documentation / Reference

• provide a JAX-RS like java interface facade over vertx-web