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

Example 6 with Microservices

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

the class TestStreamingService method test_just_one_message.

@Test
public void test_just_one_message() 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 justOne = Messages.builder().request(QuoteService.NAME, "justOne").build();
    sub1.set(service.listen(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 7 with Microservices

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

the class TestStreamingService method test_remote_node_died.

@Test
public void test_remote_node_died() 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 justOne = Messages.builder().request(QuoteService.NAME, "justOne").build();
    sub1.set(service.listen(justOne).subscribe(onNext -> {
        System.out.println(onNext);
    }));
    gateway.cluster().listenMembership().filter(predicate -> predicate.isRemoved()).subscribe(onNext -> {
        latch1.countDown();
    });
    node.cluster().shutdown();
    latch1.await(20, TimeUnit.SECONDS);
    Thread.sleep(100);
    assertTrue(latch1.getCount() == 0);
    assertTrue(sub1.get().isUnsubscribed());
    gateway.shutdown();
}

Example 8 with Microservices

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

the class ServiceTagsExample method main.

public static void main(String[] args) {
    Microservices gateway = Microservices.builder().build();
    Microservices services1 = Microservices.builder().seeds(gateway.cluster().address()).services().service(new GreetingServiceImplA()).tag("Weight", "0.3").add().build().build();
    Microservices services2 = Microservices.builder().seeds(gateway.cluster().address()).services().service(new GreetingServiceImplB()).tag("Weight", "0.7").add().build().build();
    CanaryService service = gateway.proxy().router(CanaryTestingRouter.class).api(CanaryService.class).create();
    for (int i = 0; i < 10; i++) {
        service.greeting("joe").whenComplete((success, error) -> {
            success.startsWith("B");
            System.out.println(success);
        });
    }
}

Example 9 with Microservices

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

the class StockMain method main.

/**
 * Example that shows the basic usage of streaming quotes from a remove microservice. the example creates 2 cluster
 * nodes that communicates over the network: 1. gateway node cluster member that acts as seed and gateway. 2. service
 * nodes that provisions the SimpleQuoteService at the cluster.
 *
 * <pre>
 *
 * {@code
 *   Request:
 *      QuoteService -> gateway (--- network --->) node1 -> SimpleQuoteService
 *
 *   Stream:
 *         onNext(quote) <- gateway (<--- network ---) node1 <- onNext(quote)
 * }
 * </pre>
 * the SimpleQuoteService generates random stock price every 1 second. each time subscriber subscribe he will get all
 * the history plus the next coming update of stock price.
 * the example for simplicity using both nodes on the same jvm for ease of debugging.
 * @param args none.
 */
public static void main(String[] args) {
    // seed node as gateway
    Microservices gateway = Microservices.builder().build();
    // cluster member node with SimpleQuoteService
    // join gateway cluster.
    Microservices.builder().seeds(gateway.cluster().address()).services(new SimpleQuoteService()).build();
    // create stock Quote service from gateway.
    QuoteService qouteService = gateway.proxy().api(// Quote service interface.
    QuoteService.class).create();
    // subscribe on quotes changes
    qouteService.quotes("ORCL").subscribe(onNext -> {
        System.out.println(onNext);
    });
}

Example 10 with Microservices

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

the class TestStreamingService method test_unknown_method.

@Test
public void test_unknown_method() throws InterruptedException {
    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(1);
    Message scheduled = Messages.builder().request(QuoteService.NAME, "unknonwn").build();
    try {
        service.listen(scheduled);
    } catch (Exception ex) {
        if (ex.getMessage().contains("No reachable member with such service: unknonwn")) {
            latch1.countDown();
        }
    }
    latch1.await(2, TimeUnit.SECONDS);
    assertTrue(latch1.getCount() == 0);
    node.shutdown();
    gateway.shutdown();
}