How to run embedded vert.x?

Question

I've wrote a Groovy MainApp with main(args).

When I launch it, the JVM exit directly ("End of JVM execution !").

import org.vertx.groovy.core.Vertx

class MainApp {

    public static void main(String[] args) {

        Vertx vertx = VertxFactory.newVertx();

        vertx.createHttpServer().requestHandler{ request -> 
            println "A request has arrived on the server!" 
        }.listen(8080)

        println "End of JVM execution !"
    }
}

How to run correctly an embedded HTTP server with vert.x?

Answer 1

I had the same problem with Java. I ended up putting an object in .wait() after all the vert.x code. Looks horrible, but actually makes sense because it gives me a trigger to shutdown the server on demand (via .notify()).

This is non trivial, should be mentioned on the Vert.x official documentation.