Bootstrap.java

    private static void bootstrap() throws IOException {

        String hostname = "0.0.0.0";
        String port = "9090";

        URI baseUri = UriBuilder.fromUri("http://" + hostname + "/").port(Integer.parseInt(port)).build();

        ResourceConfig config = new ResourceConfig(ServiceManagerResource.class);

        HttpServer server = GrizzlyHttpServerFactory.createHttpServer(baseUri, config);
        LOGGER.log(Level.INFO, "Application accessible at {0}", baseUri.toString());

        //gracefully exit Grizzly services when app is shut down
        Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
            @Override
            public void run() {
                LOGGER.log(Level.INFO, "Exiting......");
                try {
                    server.shutdownNow();
                    LOGGER.log(Level.INFO, "REST services stopped");

                    ServiceLifecycleManager.getInstance().stop();
                    LOGGER.log(Level.INFO, "Twitter producer stopped");

                } catch (Exception ex) {
                    //log & continue....
                    LOGGER.log(Level.SEVERE, ex, ex::getMessage);
                }

            }
        }));
        server.start();

    }