Examples with ServiceDiscovered org.apache.twill.discovery.ServiceDiscovered used on opensource projects

Example 1 with ServiceDiscovered

use of org.apache.twill.discovery.ServiceDiscovered in project cdap by caskdata.

the class ArtifactHttpHandlerTest method setup.

@BeforeClass
public static void setup() throws IOException {
    artifactRepository = getInjector().getInstance(ArtifactRepository.class);
    DiscoveryServiceClient discoveryClient = getInjector().getInstance(DiscoveryServiceClient.class);
    ServiceDiscovered metadataHttpDiscovered = discoveryClient.discover(Constants.Service.METADATA_SERVICE);
    EndpointStrategy endpointStrategy = new RandomEndpointStrategy(metadataHttpDiscovered);
    Discoverable discoverable = endpointStrategy.pick(1, TimeUnit.SECONDS);
    Assert.assertNotNull(discoverable);
    String host = "127.0.0.1";
    int port = discoverable.getSocketAddress().getPort();
    ConnectionConfig connectionConfig = ConnectionConfig.builder().setHostname(host).setPort(port).build();
    clientConfig = ClientConfig.builder().setConnectionConfig(connectionConfig).build();
    metadataClient = new MetadataClient(clientConfig);
}

Example 2 with ServiceDiscovered

use of org.apache.twill.discovery.ServiceDiscovered in project cdap by caskdata.

the class AppFabricTestBase method initializeAndStartServices.

protected static void initializeAndStartServices(CConfiguration cConf, @Nullable SConfiguration sConf) throws Exception {
    injector = Guice.createInjector(Modules.override(new AppFabricTestModule(cConf, sConf)).with(new AbstractModule() {

        @Override
        protected void configure() {
            // needed because we set Kerberos to true in DefaultNamespaceAdminTest
            bind(UGIProvider.class).to(CurrentUGIProvider.class);
        }
    }));
    messagingService = injector.getInstance(MessagingService.class);
    if (messagingService instanceof Service) {
        ((Service) messagingService).startAndWait();
    }
    txManager = injector.getInstance(TransactionManager.class);
    txManager.startAndWait();
    dsOpService = injector.getInstance(DatasetOpExecutor.class);
    dsOpService.startAndWait();
    remoteSysOpService = injector.getInstance(RemoteSystemOperationsService.class);
    remoteSysOpService.startAndWait();
    datasetService = injector.getInstance(DatasetService.class);
    datasetService.startAndWait();
    appFabricServer = injector.getInstance(AppFabricServer.class);
    appFabricServer.startAndWait();
    DiscoveryServiceClient discoveryClient = injector.getInstance(DiscoveryServiceClient.class);
    ServiceDiscovered appFabricHttpDiscovered = discoveryClient.discover(Constants.Service.APP_FABRIC_HTTP);
    EndpointStrategy endpointStrategy = new RandomEndpointStrategy(appFabricHttpDiscovered);
    port = endpointStrategy.pick(1, TimeUnit.SECONDS).getSocketAddress().getPort();
    txClient = injector.getInstance(TransactionSystemClient.class);
    metricsCollectionService = injector.getInstance(MetricsCollectionService.class);
    metricsCollectionService.startAndWait();
    metricsService = injector.getInstance(MetricsQueryService.class);
    metricsService.startAndWait();
    streamService = injector.getInstance(StreamService.class);
    streamService.startAndWait();
    serviceStore = injector.getInstance(ServiceStore.class);
    serviceStore.startAndWait();
    metadataService = injector.getInstance(MetadataService.class);
    metadataService.startAndWait();
    locationFactory = getInjector().getInstance(LocationFactory.class);
    streamClient = new StreamClient(getClientConfig(discoveryClient, Constants.Service.STREAMS));
    datasetClient = new DatasetClient(getClientConfig(discoveryClient, Constants.Service.DATASET_MANAGER));
    createNamespaces();
}

Example 3 with ServiceDiscovered

use of org.apache.twill.discovery.ServiceDiscovered in project cdap by caskdata.

the class FlowTest method testFlow.

@Test
public void testFlow() throws Exception {
    final ApplicationWithPrograms app = AppFabricTestHelper.deployApplicationWithManager(WordCountApp.class, TEMP_FOLDER_SUPPLIER);
    List<ProgramController> controllers = Lists.newArrayList();
    for (ProgramDescriptor programDescriptor : app.getPrograms()) {
        // running mapreduce is out of scope of this tests (there's separate unit-test for that)
        if (programDescriptor.getProgramId().getType() == ProgramType.MAPREDUCE) {
            continue;
        }
        controllers.add(AppFabricTestHelper.submit(app, programDescriptor.getSpecification().getClassName(), new BasicArguments(), TEMP_FOLDER_SUPPLIER));
    }
    TimeUnit.SECONDS.sleep(1);
    TransactionSystemClient txSystemClient = AppFabricTestHelper.getInjector().getInstance(TransactionSystemClient.class);
    QueueName queueName = QueueName.fromStream(app.getApplicationId().getNamespace(), "text");
    QueueClientFactory queueClientFactory = AppFabricTestHelper.getInjector().getInstance(QueueClientFactory.class);
    QueueProducer producer = queueClientFactory.createProducer(queueName);
    // start tx to write in queue in tx
    Transaction tx = txSystemClient.startShort();
    ((TransactionAware) producer).startTx(tx);
    StreamEventCodec codec = new StreamEventCodec();
    for (int i = 0; i < 10; i++) {
        String msg = "Testing message " + i;
        StreamEvent event = new StreamEvent(ImmutableMap.<String, String>of(), ByteBuffer.wrap(msg.getBytes(Charsets.UTF_8)));
        producer.enqueue(new QueueEntry(codec.encodePayload(event)));
    }
    // commit tx
    ((TransactionAware) producer).commitTx();
    txSystemClient.commit(tx);
    // Query the service for at most 10 seconds for the expected result
    Gson gson = new Gson();
    DiscoveryServiceClient discoveryServiceClient = AppFabricTestHelper.getInjector().getInstance(DiscoveryServiceClient.class);
    ServiceDiscovered serviceDiscovered = discoveryServiceClient.discover(String.format("service.%s.%s.%s", DefaultId.NAMESPACE.getNamespace(), "WordCountApp", "WordFrequencyService"));
    EndpointStrategy endpointStrategy = new RandomEndpointStrategy(serviceDiscovered);
    int trials = 0;
    while (trials++ < 10) {
        Discoverable discoverable = endpointStrategy.pick(2, TimeUnit.SECONDS);
        URL url = new URL(String.format("http://%s:%d/v3/namespaces/default/apps/%s/services/%s/methods/%s/%s", discoverable.getSocketAddress().getHostName(), discoverable.getSocketAddress().getPort(), "WordCountApp", "WordFrequencyService", "wordfreq", "text:Testing"));
        try {
            HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
            Map<String, Long> responseContent = gson.fromJson(new InputStreamReader(urlConn.getInputStream(), Charsets.UTF_8), new TypeToken<Map<String, Long>>() {
            }.getType());
            LOG.info("Service response: " + responseContent);
            if (ImmutableMap.of("text:Testing", 10L).equals(responseContent)) {
                break;
            }
        } catch (Throwable t) {
            LOG.info("Exception when trying to query service.", t);
        }
        TimeUnit.SECONDS.sleep(1);
    }
    Assert.assertTrue(trials < 10);
    for (ProgramController controller : controllers) {
        controller.stop().get();
    }
}

Example 4 with ServiceDiscovered

use of org.apache.twill.discovery.ServiceDiscovered in project cdap by caskdata.

the class AbstractEndpointStrategy method pick.

@Override
public Discoverable pick(long timeout, TimeUnit timeoutUnit) {
    Discoverable discoverable = pick();
    if (discoverable != null) {
        return discoverable;
    }
    final SettableFuture<Discoverable> future = SettableFuture.create();
    Cancellable cancellable = serviceDiscovered.watchChanges(new ServiceDiscovered.ChangeListener() {

        @Override
        public void onChange(ServiceDiscovered serviceDiscovered) {
            // The serviceDiscovered provided is the same as the one in the field, hence ok to just call pick().
            Discoverable discoverable = pick();
            if (discoverable != null) {
                future.set(discoverable);
            }
        }
    }, Threads.SAME_THREAD_EXECUTOR);
    try {
        return future.get(timeout, timeoutUnit);
    } catch (Exception e) {
        return null;
    } finally {
        cancellable.cancel();
    }
}

Example 5 with ServiceDiscovered

use of org.apache.twill.discovery.ServiceDiscovered in project cdap by caskdata.

the class AbstractServiceDiscoverer method getServiceURL.

@Override
public URL getServiceURL(String applicationId, String serviceId) {
    String discoveryName = String.format("service.%s.%s.%s", namespaceId, applicationId, serviceId);
    ServiceDiscovered discovered = getDiscoveryServiceClient().discover(discoveryName);
    return createURL(new RandomEndpointStrategy(discovered).pick(1, TimeUnit.SECONDS), applicationId, serviceId);
}