io.vertx.reactivex.CompletableHelper Java Examples

@Override
public void start(Future<Void> future) throws Exception {
    // Get the stream of messages sent on the "market" address
    vertx.eventBus().<JsonObject>consumer(GeneratorConfigVerticle.ADDRESS).toFlowable()
        // TODO Extract the body of the message using `.map(msg -> {})`
        // ----
        //
        // ----
        // TODO For each message, populate the `quotes` map with the received quote. Use `.doOnNext(json -> {})`
        // Quotes are json objects you can retrieve from the message body
        // The map is structured as follows: name -> quote
        // ----
        //
        // ----
        .subscribe();

    HttpServer server = vertx.createHttpServer();
    server.requestStream().toFlowable()
        .doOnNext(request -> {
            HttpServerResponse response = request.response()
                .putHeader("content-type", "application/json");

            // TODO Handle the HTTP request
            // The request handler returns a specific quote if the `name` parameter is set, or the whole map if none.
            // To write the response use: `response.end(content)`
            // If the name is set but not found, you should return 404 (use response.setStatusCode(404)).
            // To encode a Json object, use the `encorePrettily` method
            // ----

            // Remove this line
            response.end(Json.encodePrettily(quotes));
            
            // ----
        })
    .subscribe();

    server.rxListen(config().getInteger("http.port", 8080))
        .toCompletable()
        .subscribe(CompletableHelper.toObserver(future));
}
 

@Override
public void stop(Future<Void> future) throws Exception {
    if (record != null) {
        discovery.rxUnpublish(record.getRegistration()).subscribe(CompletableHelper.toObserver(future));
    } else {
        future.complete();
    }
}
 

@Override
public void stop(Future<Void> future) throws Exception {
    if (record != null) {
        discovery.rxUnpublish(record.getRegistration()).subscribe(CompletableHelper.toObserver(future));
    } else {
        future.complete();
    }
}
 

@Test
public void testToCompletableObserverSuccess() {
  Promise<String> promise = Promise.promise();
  CompletableObserver observer = CompletableHelper.toObserver(promise);
  Completable s = Completable.complete();
  s.subscribe(observer);
  assertTrue(promise.future().succeeded());
  assertNull(promise.future().result());
}
 

@Test
public void testToCompletableObserverFailure() {
  Promise<String> promise = Promise.promise();
  CompletableObserver observer = CompletableHelper.toObserver(promise);
  RuntimeException cause = new RuntimeException();
  Completable s = Completable.error(cause);
  s.subscribe(observer);
  assertTrue(promise.future().failed());
  assertSame(cause, promise.future().cause());
}
 

@Override
public void start(Future<Void> fut) {

    // Create a router object.
    Router router = Router.router(vertx);

    // Bind "/" to our hello message - so we are still compatible.
    router.route("/").handler(routingContext -> {
        HttpServerResponse response = routingContext.response();
        response
            .putHeader("content-type", "text/html")
            .end("<h1>Hello from my first Vert.x 3 application</h1>");
    });

    // Serve static resources from the /assets directory
    router.route("/assets/*").handler(StaticHandler.create("assets"));
    router.get("/api/articles").handler(this::getAll);
    router.get("/api/articles/:id").handler(this::getOne);
    router.route("/api/articles*").handler(BodyHandler.create());
    router.post("/api/articles").handler(this::addOne);
    router.delete("/api/articles/:id").handler(this::deleteOne);
    router.put("/api/articles/:id").handler(this::updateOne);

    ConfigRetriever retriever = ConfigRetriever.create(vertx);

    // Start sequence:
    // 1 - Retrieve the configuration
    //      |- 2 - Create the JDBC client
    //      |- 3 - Connect to the database (retrieve a connection)
    //              |- 4 - Create table if needed
    //                   |- 5 - Add some data if needed
    //                          |- 6 - Close connection when done
    //              |- 7 - Start HTTP server
    //      |- 9 - we are done!

    retriever.rxGetConfig()
        .doOnSuccess(config ->
            jdbc = JDBCClient.createShared(vertx, config, "My-Reading-List"))
        .flatMap(config ->
            connect()
                .flatMap(connection ->
                    this.createTableIfNeeded(connection)
                        .flatMap(this::createSomeDataIfNone)
                        .doAfterTerminate(connection::close)
                )
                .map(x -> config)
        )
        .flatMapCompletable(config -> createHttpServer(config, router))
        .subscribe(CompletableHelper.toObserver(fut));

}
 

@Override
public void start(Future<Void> future) {
    String company = TraderUtils.pickACompany();
    int numberOfShares = TraderUtils.pickANumber();
    System.out.println("Java-RX compulsive trader configured for company " + company + " and shares: " +
        numberOfShares);


    ServiceDiscovery.create(vertx, discovery -> {
        Single<PortfolioService> retrieveThePortfolioService = RXEventBusService.rxGetProxy(discovery, PortfolioService.class,
            rec -> rec.getName().equalsIgnoreCase("portfolio"));

        Single<MessageConsumer<JsonObject>> retrieveTheMarket = MessageSource.rxGetConsumer(discovery,
            rec -> rec.getName().equalsIgnoreCase("market-data"));

        //TODO
        //----

        // TODO 1 - "wait" for both single to be completed (using Single.zip or Single.zipWith methods)
        retrieveThePortfolioService.zipWith(retrieveTheMarket, (ps, consumer) -> {

        // TODO 2 - When both single have completed, attach the handler to the message consumer to execute the
            // trading logic

            consumer.handler(message ->
                // TODO 3 - Use the TraderUtils.drumpTradingLogic method returning a Completable. Don't forget to
                // subscribe to it, or nothing will happen. Return "true" to comply with the "zip" operator
                // signature.
                
                TraderUtils.dumbTradingLogic(company, numberOfShares, ps, message.body()).subscribe());
            // We need to return something as requested by the "zip" signature.
            return true;
        })

            // TODO 4 - Transform the output into a Completable (toCompletable) and subscribe to it using:
            //.subscribe(CompletableHelper.toObserver(future)) - it reports the failure or success to the `done`
            // future.
            .toCompletable()
            .subscribe(CompletableHelper.toObserver(future));
        //----

    });
}
 

@Override
public void start(Future<Void> future) throws Exception {
    // Get the stream of messages sent on the "market" address
    vertx.eventBus().<JsonObject>consumer(GeneratorConfigVerticle.ADDRESS).toFlowable()
        // TODO Extract the body of the message using `.map(msg -> {})`
        // ----
        .map(Message::body)
        // ----
        // TODO For each message, populate the `quotes` map with the received quote. Use `.doOnNext(json -> {})`
        // Quotes are json objects you can retrieve from the message body
        // The map is structured as follows: name -> quote
        // ----
        .doOnNext(json -> {
            quotes.put(json.getString("name"), json); // 2
        })
        // ----
        .subscribe();

    HttpServer server = vertx.createHttpServer();
    server.requestStream().toFlowable()
        .doOnNext(request -> {
            HttpServerResponse response = request.response()
                .putHeader("content-type", "application/json");

            // TODO Handle the HTTP request
            // The request handler returns a specific quote if the `name` parameter is set, or the whole map if none.
            // To write the response use: `response.end(content)`
            // If the name is set but not found, you should return 404 (use response.setStatusCode(404)).
            // To encode a Json object, use the `encorePrettily` method
            // ----
            
            String company = request.getParam("name");
            if (company == null) {
                String content = Json.encodePrettily(quotes);
                response.end(content);
            } else {
                JsonObject quote = quotes.get(company);
                if (quote == null) {
                    response.setStatusCode(404).end();
                } else {
                    response.end(quote.encodePrettily());
                }
            }
            // ----
        })
        .subscribe();

    server.rxListen(config().getInteger("http.port", 8080))
        .toCompletable()
        .subscribe(CompletableHelper.toObserver(future));
}
 

public void handlerToCompletableObserver() {

    Handler<AsyncResult<Void>> handler = getHandler();

    // Subscribe to a Single
    Completable.complete().subscribe(CompletableHelper.toObserver(handler));
  }