Examples with Microservices io.scalecube.services.Microservices used on opensource projects

Example 1 with Microservices

use of io.scalecube.services.Microservices in project scalecube by scalecube.

the class MicroservicesExample method onConsumer.

private static void onConsumer(Address providerAddress) throws Exception {
    // Create microservice consumer
    Microservices consumer = Microservices.builder().seeds(providerAddress).build();
    // Get a proxy to the service API
    GreetingService greetingService = consumer.proxy().api(GreetingService.class).create();
    // Call service (successful case)
    CompletableFuture<String> future = greetingService.greeting("Joe");
    future.whenComplete((result, exception) -> System.out.println("Consumer: 'greeting' <- " + (exception == null ? result : exception)));
    // Call service (error case)
    CompletableFuture<String> futureError = greetingService.greetingException("Joe");
    futureError.whenComplete((result, exception) -> System.out.println("Consumer: 'greetingException' <- " + (exception == null ? result : exception)));
}

Example 2 with Microservices

use of io.scalecube.services.Microservices in project scalecube by scalecube.

the class TestStreamingService method test_call_quotes_snapshot.

@Test
public void test_call_quotes_snapshot() throws InterruptedException {
    int batchSize = 1_000_000;
    Microservices gateway = Microservices.builder().build();
    Microservices node = Microservices.builder().seeds(gateway.cluster().address()).services(new SimpleQuoteService()).build();
    ServiceCall service = gateway.dispatcher().create();
    CountDownLatch latch1 = new CountDownLatch(batchSize);
    Subscription sub1 = service.listen(Messages.builder().request(QuoteService.NAME, "snapshoot").data(batchSize).build()).subscribeOn(Schedulers.from(Executors.newCachedThreadPool())).serialize().subscribe(onNext -> latch1.countDown());
    long start = System.currentTimeMillis();
    latch1.await(batchSize / 40_000, TimeUnit.SECONDS);
    long end = (System.currentTimeMillis() - start);
    System.out.println("TIME IS UP! - recived batch (size: " + (batchSize - latch1.getCount()) + "/" + batchSize + ") in " + (System.currentTimeMillis() - start) + "ms: " + "rate of :" + batchSize / (end / 1000) + " events/sec ");
    sub1.unsubscribe();
    gateway.shutdown();
    node.shutdown();
}

Example 3 with Microservices

use of io.scalecube.services.Microservices in project scalecube by scalecube.

the class TestStreamingService method test_just_once.

@Test
public void test_just_once() throws InterruptedException {
    int batchSize = 1;
    Microservices gateway = Microservices.builder().build();
    Microservices node = Microservices.builder().seeds(gateway.cluster().address()).services(new SimpleQuoteService()).build();
    QuoteService service = gateway.proxy().api(QuoteService.class).create();
    final CountDownLatch latch1 = new CountDownLatch(batchSize);
    AtomicReference<Subscription> sub1 = new AtomicReference<Subscription>(null);
    sub1.set(service.justOne().serialize().subscribe(onNext -> {
        sub1.get().unsubscribe();
        latch1.countDown();
    }));
    latch1.await(2, TimeUnit.SECONDS);
    assertTrue(latch1.getCount() == 0);
    assertTrue(sub1.get().isUnsubscribed());
    gateway.shutdown();
    node.shutdown();
}

Example 4 with Microservices

use of io.scalecube.services.Microservices in project scalecube by scalecube.

the class TestStreamingService method test_scheduled_messages.

@Test
public void test_scheduled_messages() throws InterruptedException {
    int batchSize = 1;
    Microservices gateway = Microservices.builder().build();
    Microservices node = Microservices.builder().seeds(gateway.cluster().address()).services(new SimpleQuoteService()).build();
    ServiceCall service = gateway.dispatcher().create();
    final CountDownLatch latch1 = new CountDownLatch(batchSize);
    AtomicReference<Subscription> sub1 = new AtomicReference<Subscription>(null);
    Message scheduled = Messages.builder().request(QuoteService.NAME, "scheduled").data(1000).build();
    sub1.set(service.listen(scheduled).serialize().subscribe(onNext -> {
        sub1.get().isUnsubscribed();
        latch1.countDown();
    }));
    latch1.await(2, TimeUnit.SECONDS);
    assertTrue(latch1.getCount() == 0);
    node.shutdown();
    gateway.shutdown();
}

Example 5 with Microservices

use of io.scalecube.services.Microservices in project scalecube by scalecube.

the class SimpleStressTest method test_naive_dispatcher_stress.

@Test
public void test_naive_dispatcher_stress() throws InterruptedException, ExecutionException {
    // Create microservices cluster member.
    Microservices provider = Microservices.builder().port(port.incrementAndGet()).services(new GreetingServiceImpl()).metrics(registry).build();
    // Create microservices cluster member.
    Microservices consumer = Microservices.builder().port(port.incrementAndGet()).seeds(provider.cluster().address()).metrics(registry).build();
    reporter.start(10, TimeUnit.SECONDS);
    ServiceCall greetings = consumer.dispatcher().timeout(Duration.ofSeconds(30)).create();
    // Measure
    CountDownLatch countLatch = new CountDownLatch(count);
    long startTime = System.currentTimeMillis();
    for (int i = 0; i < count; i++) {
        CompletableFuture<Message> future = greetings.invoke(Messages.builder().request(GreetingService.class, "greetingMessage").data("1").build());
        future.whenComplete((success, error) -> {
            countLatch.countDown();
        });
    }
    System.out.println("Finished sending " + count + " messages in " + (System.currentTimeMillis() - startTime));
    countLatch.await(60, TimeUnit.SECONDS);
    reporter.stop();
    System.out.println("Finished receiving " + count + " messages in " + (System.currentTimeMillis() - startTime));
    assertTrue(countLatch.getCount() == 0);
    provider.shutdown().get();
    consumer.shutdown().get();
}