Examples of io.vertx.core.eventbus.MessageConsumer

io.vertx.core.eventbus.MessageConsumer
An event bus consumer object representing a stream of message to an {@link EventBus} address that canbe read from.
The {@link EventBus#consumer(String)} or {@link EventBus#localConsumer(String)}create a new consumer, the returned consumer is not yet registered against the event bus. Registration is effective after the {@link #handler(io.vertx.core.Handler)} method is invoked.
The consumer is unregistered from the event bus using the {@link #unregister()} method or by calling the{@link #handler(io.vertx.core.Handler)} with a null value.. @author Nick Scavelli

        if (registerCount.incrementAndGet() == 2) {
          vertices[0].eventBus().publish(ADDRESS1, (T)val);
        }
      }
    }
    MessageConsumer reg = vertices[2].eventBus().<T>consumer(ADDRESS1).handler(new MyHandler());
    reg.completionHandler(new MyRegisterHandler());
    reg = vertices[1].eventBus().<T>consumer(ADDRESS1).handler(new MyHandler());
    reg.completionHandler(new MyRegisterHandler());
    vertices[0].eventBus().publish(ADDRESS1, val);
    await();
  }

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  public void testServerDrainHandler() {
    drainingServer(s -> {
      client.request(HttpMethod.GET, DEFAULT_HTTP_PORT, DEFAULT_HTTP_HOST, DEFAULT_TEST_URI, resp -> {
        resp.pause();
        Handler<Message<Buffer>> resumeHandler = msg -> resp.resume();
        MessageConsumer reg = vertx.eventBus().<Buffer>consumer("client_resume").handler(resumeHandler);
        resp.endHandler(v -> reg.unregister());
      }).end();
    });


    await();
  }

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  private void pausingServer(Consumer<HttpServer> consumer) {
    server.requestHandler(req -> {
      req.response().setChunked(true);
      req.pause();
      Handler<Message<Buffer>> resumeHandler = msg -> req.resume();
      MessageConsumer reg = vertx.eventBus().<Buffer>consumer("server_resume").handler(resumeHandler);
      req.endHandler(v -> reg.unregister());


      req.handler(buff -> {
        req.response().write(buff);
      });
    });

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  void pausingServer(Handler<AsyncResult<NetServer>> listenHandler) {
    server.connectHandler(sock -> {
      sock.pause();
      Handler<Message<Buffer>> resumeHandler = (m) -> sock.resume();
      MessageConsumer reg = vertx.eventBus().<Buffer>consumer("server_resume").handler(resumeHandler);
      sock.closeHandler(v -> reg.unregister());
    }).listen(listenHandler);
  }

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    await();
  }


  void setHandlers(NetSocket sock) {
    Handler<Message<Buffer>> resumeHandler = m -> sock.resume();
    MessageConsumer reg = vertx.eventBus().<Buffer>consumer("client_resume").handler(resumeHandler);
    sock.closeHandler(v -> reg.unregister());
  }

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          refReg.get().unregister();
          metrics.replyFailure(message.address(), ReplyFailure.TIMEOUT);
          replyHandler.handle(Future.completedFuture(new ReplyException(ReplyFailure.TIMEOUT, "Timed out waiting for reply")));
        });
        simpleReplyHandler = convertHandler(replyHandler);
        MessageConsumer registration = registerHandler(message.replyAddress(), simpleReplyHandler, true, true, timeoutID);
        refReg.set(registration);
      }
      if (replyDest != null) {
        if (!replyDest.equals(this.serverID)) {
          sendRemote(replyDest, message);

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  @Test
  public void testRegisterUnregister() {
    String str = TestUtils.randomUnicodeString(100);
    Handler<Message<String>> handler = msg -> fail("Should not receive message");
    MessageConsumer reg = eb.<String>consumer(ADDRESS1).handler(handler);
    reg.unregister();
    eb.send(ADDRESS1, str);
    vertx.setTimer(1000, id -> testComplete());
    await();
  }

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  }


  @Test
  public void testUnregisterTwice() {
    Handler<Message<String>> handler = msg -> {};
    MessageConsumer reg = eb.<String>consumer(ADDRESS1).handler(handler);
    reg.unregister();
    reg.unregister(); // Ok to unregister twice
    testComplete();
  }

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      if (totalCount.incrementAndGet() == 2) {
        testComplete();
      }
    };


    MessageConsumer reg = eb.<String>consumer(ADDRESS1).handler(handler1);
    eb.<String>consumer(ADDRESS1).handler(handler2);
    eb.<String>consumer(ADDRESS1).handler(handler3);
    reg.unregister();
    eb.send(ADDRESS1, str);
    eb.send(ADDRESS1, str);


    await();
  }

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    Handler<Message<String>> handler2 = (Message<String> msg) -> {
      fail("Should not be called");
    };


    eb.<String>consumer(ADDRESS1).handler(handler1);
    MessageConsumer reg = eb.<String>consumer(ADDRESS1).handler(handler2);
    reg.unregister();
    eb.publish(ADDRESS1, str);


    await();
  }

View Full Code Here

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Related Classes of io.vertx.core.eventbus.MessageConsumer

io.vertx.core.eventbus.impl.EventBusImpl

io.vertx.test.core.ClusteredEventBusTest

io.vertx.test.core.HttpTest

io.vertx.test.core.LocalEventBusTest

io.vertx.test.core.NetTest

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