REST-Endpoint: Async execution without return value

Question

My problem might be very easy to solve, but I don\'t get it at the moment. In my Quarkus-App I have a REST-Endpoint which should call a method, don\'t wait for the result an

Answer 1

We've found a solution:

@POST
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response calculateAsync(String input) {
    Uni.createFrom().item(input).emitOn(Infrastructure.getDefaultWorkerPool()).subscribe().with(
            item -> process(input), Throwable::printStackTrace
    );

    return Response.accepted().build();
}

Answer 2

You can use @Suspended AsyncResponse response in parameters and make the method return void Here's example of a similar method:

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public void hello(@Suspended AsyncResponse response) throws InterruptedException {
        response.resume(Response.ok().build());
        Thread.sleep(10000);
        System.out.println("Do some work");
    }