Java EventBusService类代码示例

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Test
public void testLookupWithNonMatchingQuery() throws UnsupportedEncodingException {
  HelloService svc = new HelloServiceImpl("stuff");
  ProxyHelper.registerService(HelloService.class, vertx, svc, "address");

  Record record1 = EventBusService.createRecord("Hello", "address", HelloService.class,
    new JsonObject().put("key", "foo"));
  Record record2 = EventBusService.createRecord("Hello-2", "address", HelloService.class,
    new JsonObject().put("key", "bar"));

  discovery.publish(record1, (r) -> {
  });
  discovery.publish(record2, (r) -> {
  });

  await().until(() -> record1.getRegistration() != null);
  await().until(() -> record2.getRegistration() != null);

  JsonArray services = given()
    .param("query", "{\"stuff\":\"*\"}")
    .get("/discovery")
    .asJsonArray();

  assertThat(services.size()).isEqualTo(0);
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
private void authUaaHandler(RoutingContext context) {
  if (context.user() != null) {
    JsonObject principal = context.user().principal();
    String username = null;  // TODO: Only for demo. Complete this in next version.
    // String username = KeycloakHelper.preferredUsername(principal);
    if (username == null) {
      context.response()
        .putHeader("content-type", "application/json")
        .end(new Account().setId("TEST666").setUsername("Eric").toString()); // TODO: no username should be an error
    } else {
      Future<AccountService> future = Future.future();
      EventBusService.getProxy(discovery, AccountService.class, future.completer());
      future.compose(accountService -> {
        Future<Account> accountFuture = Future.future();
        accountService.retrieveByUsername(username, accountFuture.completer());
        return accountFuture.map(a -> {
          ServiceDiscovery.releaseServiceObject(discovery, accountService);
          return a;
        });
      })
        .setHandler(resultHandlerNonEmpty(context)); // if user does not exist, should return 404
    }
  } else {
    context.fail(401);
  }
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Override
protected void onSetup() {
    metadata.put("service.interface", TestService.class.getName());
    record = new Record().setName(SERVICE_NAME).setType(EventBusService.TYPE)
            .setMetadata(metadata).setLocation(new JsonObject().put("endpoint", "endpoint"));
    otherRecord = new Record().setName("other service name");
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
private Future<PortfolioService> getPortfolioService(ServiceDiscovery discovery) {
    Future<PortfolioService> future = Future.future();
    EventBusService.getServiceProxy(discovery,
        rec -> rec.getName().equalsIgnoreCase("portfolio"),
        PortfolioService.class,
        future);
    return future;
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Override
public <T> void getServiceProxy(JsonObject filter, Class<T> clazz, Handler<AsyncResult<T>> handler) {
  flow.getServiceRef(filter, filter.getString("name"), ar -> {
    if (ar.succeeded()) {
      EventBusService.getProxy(flow.discovery, clazz, ar2 -> {
        T t = ar2.result();
        handler.handle(Future.succeededFuture(t));

      });
    }
  });



}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Override
public void start(Future<Void> future) {
    super.start();

    // Get configuration
    config = ConfigFactory.load();

    String company = TraderUtils.pickACompany();
    int numberOfShares = TraderUtils.pickANumber();

    EventBus eventBus = vertx.eventBus();
    EventBusService.getProxy(discovery, PortfolioService.class, ar -> {
        if (ar.failed()) {
            System.out.println("Portfolio service could not be retrieved: " + ar.cause());
        } else {
            // Our services:
            PortfolioService portfolio = ar.result();
            MessageConsumer<JsonObject> marketConsumer = eventBus.consumer(config.getString("market.address"));

            // Listen to the market...
            marketConsumer.handler(message -> {
                JsonObject quote = message.body();
                TraderUtils.dumbTradingLogic(company, numberOfShares, portfolio, quote);
            });
        }
    });
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
public void example1(ServiceDiscovery discovery) {
  Record record = EventBusService.createRecord(
      "some-eventbus-service", // The service name
      "address", // the service address,
      MyService.class // the service interface
  );

  discovery.publish(record, ar -> {
    // ...
  });

}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
public void example3(ServiceDiscovery discovery) {
  EventBusService.getProxy(discovery, MyService.class, ar -> {
    if (ar.succeeded()) {
      MyService service = ar.result();

      // Dont' forget to release the service
      ServiceDiscovery.releaseServiceObject(discovery, service);
    }
  });
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
public void example1(ServiceDiscovery discovery) {
  Record record = EventBusService.createRecord(
      "some-eventbus-service", // The service name
      "address", // the service address,
      "examples.MyService", // the service interface as string
      new JsonObject()
          .put("some-metadata", "some value")
  );

  discovery.publish(record, ar -> {
    // ...
  });
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
public void example31(ServiceDiscovery discovery) {
  EventBusService.getServiceProxyWithJsonFilter(discovery,
    new JsonObject().put("service.interface", "org.acme.MyService"), // The java interface
    MyService.class, // The expect client
    ar -> {
    if (ar.succeeded()) {
      MyService service = ar.result();

      // Dont' forget to release the service
      ServiceDiscovery.releaseServiceObject(discovery, service);
    }
  });
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Test
public void testThatWeGetTheTwoPublishedServicesWithMetadata() {
  HelloService svc = new HelloServiceImpl("stuff");
  ProxyHelper.registerService(HelloService.class, vertx, svc, "address");

  Record record1 = EventBusService.createRecord("Hello", "address", HelloService.class,
    new JsonObject().put("key", "foo"));
  Record record2 = EventBusService.createRecord("Hello-2", "address", HelloService.class,
    new JsonObject().put("key", "bar"));

  discovery.publish(record1, (r) -> {
  });
  discovery.publish(record2, (r) -> {
  });

  await().until(() -> record1.getRegistration() != null);
  await().until(() -> record2.getRegistration() != null);

  Restafari.Response response = get("/discovery");
  JsonArray services = new JsonArray(response.asString());

  assertThat(services.size()).isEqualTo(2);

  for (Object json : services) {
    Record rec = new Record((JsonObject) json);
    assertThat(rec.getStatus()).isEqualTo(Status.UP);
    assertThat(rec.getRegistration()).isNotNull();
    assertThat(rec.getName()).startsWith("Hello");
    assertThat(rec.getMetadata().getString("key")).isNotNull();

    get("/discovery/" + rec.getRegistration()).then().body("name", not(nullValue()));
  }
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
@Test
public void testLookupWithQuery() throws UnsupportedEncodingException {
  HelloService svc = new HelloServiceImpl("stuff");
  ProxyHelper.registerService(HelloService.class, vertx, svc, "address");

  Record record1 = EventBusService.createRecord("Hello", "address", HelloService.class,
    new JsonObject().put("key", "foo"));
  Record record2 = EventBusService.createRecord("Hello-2", "address", HelloService.class,
    new JsonObject().put("key", "bar"));

  discovery.publish(record1, (r) -> {
  });
  discovery.publish(record2, (r) -> {
  });

  await().until(() -> record1.getRegistration() != null);
  await().until(() -> record2.getRegistration() != null);


  JsonArray services =
    given()
      .param("query", "{\"name\":\"Hello\"}")
      .get("/discovery")
      .asJsonArray();

  assertThat(services.size()).isEqualTo(1);
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
/**
 * Fetch global counter of order from the cache infrastructure.
 *
 * @param key counter key (type)
 * @return async result of the counter
 */
private Future<Long> retrieveCounter(String key) {
  Future<Long> future = Future.future();
  EventBusService.getProxy(discovery, CounterService.class,
    ar -> {
      if (ar.succeeded()) {
        CounterService service = ar.result();
        service.addThenRetrieve(key, future.completer());
      } else {
        future.fail(ar.cause());
      }
    });
  return future;
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
private Future<ShoppingCart> getCurrentCart(String userId) {
  Future<ShoppingCartService> future = Future.future();
  EventBusService.getProxy(discovery, ShoppingCartService.class, future.completer());
  return future.compose(service -> {
    Future<ShoppingCart> cartFuture = Future.future();
    service.getShoppingCart(userId, cartFuture.completer());
    return cartFuture.compose(c -> {
      if (c == null || c.isEmpty())
        return Future.failedFuture(new IllegalStateException("Invalid shopping cart"));
      else
        return Future.succeededFuture(c);
    });
  });
}
 

import io.vertx.servicediscovery.types.EventBusService; //导入依赖的package包/类
/**
 * Save checkout cart event for current user.
 *
 * @param userId user id
 * @return async result
 */
private Future<Void> saveCheckoutEvent(String userId) {
  Future<ShoppingCartService> future = Future.future();
  EventBusService.getProxy(discovery, ShoppingCartService.class, future.completer());
  return future.compose(service -> {
    Future<Void> resFuture = Future.future();
    CartEvent event = CartEvent.createCheckoutEvent(userId);
    service.addCartEvent(event, resFuture.completer());
    return resFuture;
  });
}