run a vertx http server on 8080 and an mqtt server

mqttclever.groovy

@GrabResolver(name='staging', root ='https://oss.sonatype.org/content/repositories/iovertx-3863/')
@Grab(group='io.vertx', module='vertx-core', version='3.8.5')
@Grab(group='io.vertx', module='vertx-mqtt', version='3.8.5')
@Grab(group='io.vertx', module='vertx-web', version='3.8.5')
@Grab(group='io.vertx', module='vertx-lang-groovy', version='3.8.5')
import io.vertx.mqtt.MqttServer
import io.vertx.mqtt.MqttServerOptions
import io.vertx.core.AbstractVerticle;
import io.vertx.core.DeploymentOptions;
import io.vertx.core.Vertx;
import io.vertx.core.VertxOptions;
import io.vertx.ext.web.Router

class Launcher {

  public static void main(String[] args) throws Exception {
    Vertx vertx = Vertx.vertx();
    vertx.deployVerticle(new MyMqttServer());
    vertx.deployVerticle(new HttpServer());
  }
}

class MyMqttServer extends AbstractVerticle {

  @Override
  public void start() throws Exception {
	MqttServerOptions options = new MqttServerOptions();
	options.setPort(4040);
	MqttServer mqttServer = MqttServer.create(vertx, options);
	mqttServer.endpointHandler({endpoint -> 
	  // shows main connect info
	  System.out.println("MQTT client [" + endpoint.clientIdentifier() + "] request to connect, clean session = " + endpoint.isCleanSession());

	  if (endpoint.auth() != null) {
	    System.out.println("[username = " + endpoint.auth().getUsername() + ", password = " + endpoint.auth().getPassword() + "]");
	  }
	  if (endpoint.will() != null) {
	    System.out.println("[will topic = " + endpoint.will().getWillTopic() + " msg = " + new String(endpoint.will().getWillMessageBytes()) +
	      " QoS = " + endpoint.will().getWillQos() + " isRetain = " + endpoint.will().isWillRetain() + "]");
	  }

	  System.out.println("[keep alive timeout = " + endpoint.keepAliveTimeSeconds() + "]");

	  // accept connection from the remote client
	  endpoint.accept(false);

	})
	  .listen({ar -> 

	    if (ar.succeeded()) {

	      System.out.println("MQTT server is listening on port " + ar.result().actualPort());
	    } else {

	      System.out.println("Error on starting the server");
	      ar.cause().printStackTrace();
	    }
	  });
  }
}


class HttpServer extends AbstractVerticle {

  @Override
  public void start() throws Exception {
	Router router = Router.router(vertx)

	router.route().handler({ routingContext ->
	  routingContext.response().putHeader("content-type", "text/html").end("Hello World!")
	})

	vertx.createHttpServer().requestHandler(router.&accept).listen(8080)
  }
}