io.vertx.reactivex.kafka.client.consumer.KafkaConsumer Java Examples

The following examples show how to use io.vertx.reactivex.kafka.client.consumer.KafkaConsumer. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: EventsVerticle.java    From vertx-in-action with MIT License 6 votes vote down vote up 
@Override
public Completable rxStart() {
  eventConsumer = KafkaConsumer.create(vertx, KafkaConfig.consumer("activity-service"));
  updateProducer = KafkaProducer.create(vertx, KafkaConfig.producer());
  pgPool = PgPool.pool(vertx, PgConfig.pgConnectOpts(), new PoolOptions());

  eventConsumer
    .subscribe("incoming.steps")
    .toFlowable()
    .flatMap(this::insertRecord)
    .flatMap(this::generateActivityUpdate)
    .flatMap(this::commitKafkaConsumerOffset)
    .doOnError(err -> logger.error("Woops", err))
    .retryWhen(this::retryLater)
    .subscribe();

  return Completable.complete();
}
Example #2
Source File: EventProcessingTest.java    From vertx-in-action with MIT License 6 votes vote down vote up 
@BeforeEach
void resetPgAndKafka(Vertx vertx, VertxTestContext testContext) {
  consumer = KafkaConsumer.create(vertx, KafkaConfig.consumer("activity-service-test-" + System.currentTimeMillis()));
  producer = KafkaProducer.create(vertx, KafkaConfig.producer());
  KafkaAdminClient adminClient = KafkaAdminClient.create(vertx, KafkaConfig.producer());

  PgPool pgPool = PgPool.pool(vertx, PgConfig.pgConnectOpts(), new PoolOptions());
  pgPool.query("DELETE FROM stepevent")
    .rxExecute()
    .flatMapCompletable(rs -> adminClient.rxDeleteTopics(Arrays.asList("incoming.steps", "daily.step.updates")))
    .andThen(Completable.fromAction(pgPool::close))
    .onErrorComplete()
    .subscribe(
      testContext::completeNow,
      testContext::failNow);
}
Example #3
Source File: CongratsVerticle.java    From vertx-in-action with MIT License 6 votes vote down vote up 
@Override
public Completable rxStart() {
  mailClient = MailClient.createShared(vertx, MailerConfig.config());
  webClient = WebClient.create(vertx);

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumerConfig("congrats-service"))
    .subscribe("daily.step.updates")
    .toFlowable()
    .filter(this::above10k)
    .distinct(KafkaConsumerRecord::key)
    .flatMapSingle(this::sendmail)
    .doOnError(err -> logger.error("Woops", err))
    .retryWhen(this::retryLater)
    .subscribe(mailResult -> logger.info("Congratulated {}", mailResult.getRecipients()));

  return Completable.complete();
}
Example #4
Source File: DashboardWebAppVerticle.java    From vertx-in-action with MIT License 5 votes vote down vote up 
@Override
public Completable rxStart() {
  Router router = Router.router(vertx);

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumerConfig("dashboard-webapp-throughput"))
    .subscribe("event-stats.throughput")
    .toFlowable()
    .subscribe(record -> forwardKafkaRecord(record, "client.updates.throughput"));

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumerConfig("dashboard-webapp-city-trend"))
    .subscribe("event-stats.city-trend.updates")
    .toFlowable()
    .subscribe(record -> forwardKafkaRecord(record, "client.updates.city-trend"));

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumerConfig("dashboard-webapp-ranking"))
    .subscribe("event-stats.user-activity.updates")
    .toFlowable()
    .filter(record -> record.value().getBoolean("makePublic"))
    .buffer(5, TimeUnit.SECONDS, RxHelper.scheduler(vertx))
    .subscribe(this::updatePublicRanking);

  hydrate();

  SockJSHandler sockJSHandler = SockJSHandler.create(vertx);
  SockJSBridgeOptions bridgeOptions = new SockJSBridgeOptions()
    .addInboundPermitted(new PermittedOptions().setAddressRegex("client.updates.*"))
    .addOutboundPermitted(new PermittedOptions().setAddressRegex("client.updates.*"));
  sockJSHandler.bridge(bridgeOptions);
  router.route("/eventbus/*").handler(sockJSHandler);

  router.get("/").handler(ctx -> ctx.reroute("/index.html"));
  router.route().handler(StaticHandler.create("webroot/assets"));

  return vertx.createHttpServer()
    .requestHandler(router)
    .rxListen(HTTP_PORT)
    .ignoreElement();
}
Example #5
Source File: IntegrationTest.java    From vertx-in-action with MIT License 5 votes vote down vote up 
@BeforeEach
void setup(Vertx vertx, VertxTestContext testContext) {
  kafkaConsumer = KafkaConsumer.create(vertx, kafkaConfig());
  amqpClient = AmqpClient.create(vertx, amqClientOptions());
  KafkaAdminClient adminClient = KafkaAdminClient.create(vertx, kafkaConfig());
  vertx
    .rxDeployVerticle(new IngesterVerticle())
    .delay(500, TimeUnit.MILLISECONDS, RxHelper.scheduler(vertx))
    .flatMapCompletable(id -> adminClient.rxDeleteTopics(singletonList("incoming.steps")))
    .onErrorComplete()
    .subscribe(testContext::completeNow, testContext::failNow);
}
Example #6
Source File: EventStatsVerticle.java    From vertx-in-action with MIT License 5 votes vote down vote up 
@Override
public Completable rxStart() {
  webClient = WebClient.create(vertx);
  producer = KafkaProducer.create(vertx, KafkaConfig.producer());

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumer("event-stats-throughput"))
    .subscribe("incoming.steps")
    .toFlowable()
    .buffer(5, TimeUnit.SECONDS, RxHelper.scheduler(vertx))
    .flatMapCompletable(this::publishThroughput)
    .doOnError(err -> logger.error("Woops", err))
    .retryWhen(this::retryLater)
    .subscribe();

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumer("event-stats-user-activity-updates"))
    .subscribe("daily.step.updates")
    .toFlowable()
    .flatMapSingle(this::addDeviceOwner)
    .flatMapSingle(this::addOwnerData)
    .flatMapCompletable(this::publishUserActivityUpdate)
    .doOnError(err -> logger.error("Woops", err))
    .retryWhen(this::retryLater)
    .subscribe();

  KafkaConsumer.<String, JsonObject>create(vertx, KafkaConfig.consumer("event-stats-city-trends"))
    .subscribe("event-stats.user-activity.updates")
    .toFlowable()
    .groupBy(this::city)
    .flatMap(groupedFlowable -> groupedFlowable.buffer(5, TimeUnit.SECONDS, RxHelper.scheduler(vertx)))
    .flatMapCompletable(this::publishCityTrendUpdate)
    .doOnError(err -> logger.error("Woops", err))
    .retryWhen(this::retryLater)
    .subscribe();

  return Completable.complete();
}
Example #7
Source File: EventStatsTest.java    From vertx-in-action with MIT License 5 votes vote down vote up 
@BeforeEach
void prepare(Vertx vertx, VertxTestContext testContext) {
  producer = KafkaProducer.create(vertx, KafkaConfig.producer());
  consumer = KafkaConsumer.create(vertx, KafkaConfig.consumer(UUID.randomUUID().toString()));
  KafkaAdminClient adminClient = KafkaAdminClient.create(vertx, KafkaConfig.producer());
  adminClient
    .rxDeleteTopics(Arrays.asList("incoming.steps", "daily.step.updates"))
    .onErrorComplete()
    .andThen(vertx.rxDeployVerticle(new EventStatsVerticle()))
    .ignoreElement()
    .andThen(vertx.rxDeployVerticle(new FakeUserService()))
    .ignoreElement()
    .subscribe(testContext::completeNow, testContext::failNow);
}
Example #8
Source File: Main.java    From redpipe with Apache License 2.0 4 votes vote down vote up 
private static void onStart() {
	System.err.println("Started");

	// Kafka setup for the example
    File dataDir = Testing.Files.createTestingDirectory("cluster");
    dataDir.deleteOnExit();
    KafkaCluster kafkaCluster;
	try {
		kafkaCluster = new KafkaCluster()
		  .usingDirectory(dataDir)
		  .withPorts(2181, 9092)
		  .addBrokers(1)
		  .deleteDataPriorToStartup(true)
		  .startup();
	} catch (IOException e) {
		throw new RuntimeException(e);
	}

    // Deploy the dashboard
    JsonObject consumerConfig = new JsonObject((Map) kafkaCluster.useTo()
      .getConsumerProperties("the_group", "the_client", OffsetResetStrategy.LATEST));

    AppGlobals globals = AppGlobals.get();
    
    // Create the consumer
	KafkaConsumer<String, JsonObject> consumer = KafkaConsumer.create(globals.getVertx(), (Map)consumerConfig.getMap(), 
    		String.class, JsonObject.class);
	
	BehaviorSubject<JsonObject> consumerReporter = BehaviorSubject.create();
	consumer.toObservable().subscribe(record -> consumerReporter.onNext(record.value()));
	
    // Subscribe to Kafka
    consumer.subscribe("the_topic");
    globals.setGlobal("consumer", consumerReporter);
    

    // Deploy the metrics collector : 3 times
    JsonObject producerConfig = new JsonObject((Map) kafkaCluster.useTo()
      .getProducerProperties("the_producer"));
    globals.getVertx().deployVerticle(
      MetricsVerticle.class.getName(),
      new DeploymentOptions().setConfig(producerConfig).setInstances(3)
    );
}