## RxJava 3 API

The Web API Contract provides an rxified version of APIs

Here is a complete example:

    OpenAPI3RouterFactory
      .create(vertx, "src/main/resources/petstore.yaml")
      .flatMap(routerFactory -> {
        // Spec loaded with success. router factory contains OpenAPI3RouterFactory
        // Set router factory options.
        RouterFactoryOptions options = new RouterFactoryOptions().setOperationModelKey("openapi_model");
        // Mount the options
        routerFactory.setOptions(options);
        // Add an handler with operationId
        routerFactory.addHandlerByOperationId("listPets", routingContext -> {
          // Handle listPets operation
          routingContext.response().setStatusMessage("Called listPets").end();
        });

        // Add a security handler
        routerFactory.addSecurityHandler("api_key", JWTAuthHandler.create(jwtAuth));

        // Now you have to generate the router
        Router router = routerFactory.getRouter();

        // Now you can use your Router instance
        HttpServer server = vertx.createHttpServer(new HttpServerOptions().setPort(8080).setHost("localhost"));
        return server.requestHandler(router).listen();
      })
      .subscribe(httpServer -> {
        // Server up and running
      }, throwable -> {
        // Error during router factory instantiation or http server start
      });