[cdi-dev] async activation on observers, why not CompletableFuture

Hi guys, on async topic if I followed we are at the point where we are looking for an activation on the observer side. Since Java 8 has now CompletableFuture it would be great to use it. Today the spec doesnt use observer returned values so it is mainly a bad practise to have one even if not strictly forbidden - BTW never saw it in real applications - plus spec is not compatible - not specified at all - with CompletableFuture since it is a new API so we can use it as a marker. This is quite interesting for few reasons: 1- we have our double activation 2- API is user friendly (observer is async and has an async signature) 3- open door for future async enhancements (hopefully not in CDI) with composition of these observers Only point I'm not sure is should these observers support sync events. I don't see anything blocking to do it but can have missed something. wdyt? Romain Manni-Bucau @rmannibucau <https://twitter.com/rmannibucau> | Blog <http://rmannibucau.wordpress.com> | Github <https://github.com/rmannibucau> | LinkedIn <https://www.linkedin.com/in/rmannibucau> | Tomitriber <http://www.tomitribe.com>