Package co.cask.cdap.common.discovery

Examples of co.cask.cdap.common.discovery.TimeLimitEndpointStrategy

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  public ACLClient(final DiscoveryServiceClient discoveryServiceClient) {
    this.baseURI = new Supplier<URI>() {
      @Override
      public URI get() {
        Iterable<Discoverable> serviceDiscovered = discoveryServiceClient.discover(Constants.Service.ACL);
        TimeLimitEndpointStrategy strategy = new TimeLimitEndpointStrategy(
          new RandomEndpointStrategy(serviceDiscovered), 5, TimeUnit.SECONDS);
        Preconditions.checkNotNull(strategy.pick(), "No discoverable endpoint found for ACLService");

        InetSocketAddress socketAddress = strategy.pick().getSocketAddress();
        try {
          // TODO: support https by checking router ssl enabled from Configuration
          String url = String.format("http://%s:%d", socketAddress.getAddress().getHostName(), socketAddress.getPort());
          return new URI(url);
        } catch (URISyntaxException e) {
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    emit(appSpec);
  }

  private void deleteMetrics(String account, String application, Iterable<String> flows) throws IOException {
    Iterable<Discoverable> discoverables = this.discoveryServiceClient.discover(Constants.Service.GATEWAY);
    Discoverable discoverable = new TimeLimitEndpointStrategy(new RandomEndpointStrategy(discoverables),
                                                              DISCOVERY_TIMEOUT_SECONDS, TimeUnit.SECONDS).pick();

    if (discoverable == null) {
      LOG.error("Fail to get any metrics endpoint for deleting metrics.");
      return;
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      ApplicationSpecification spec = this.store.getApplication
        (new Id.Application(new Id.Account(accountId), applicationId));
      applications.add(spec);
    }
    Iterable<Discoverable> discoverables = this.discoveryServiceClient.discover(Constants.Service.METRICS);
    Discoverable discoverable = new TimeLimitEndpointStrategy(new RandomEndpointStrategy(discoverables),
                                                              DISCOVERY_TIMEOUT_SECONDS, TimeUnit.SECONDS).pick();

    if (discoverable == null) {
      LOG.error("Fail to get any metrics endpoint for deleting metrics.");
      throw new IOException("Can't find Metrics endpoint");
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  }

  // deletes the process metrics for a flow
  private void deleteProcessMetricsForFlow(String application, String flow) throws IOException {
    Iterable<Discoverable> discoverables = this.discoveryServiceClient.discover(Constants.Service.METRICS);
    Discoverable discoverable = new TimeLimitEndpointStrategy(new RandomEndpointStrategy(discoverables),
                                                              3L, TimeUnit.SECONDS).pick();

    if (discoverable == null) {
      LOG.error("Fail to get any metrics endpoint for deleting metrics.");
      throw new IOException("Can't find Metrics endpoint");
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  public DatasetServiceClient(final DiscoveryServiceClient discoveryClient) {
    this.endpointStrategySupplier = Suppliers.memoize(new Supplier<EndpointStrategy>() {
      @Override
      public EndpointStrategy get() {
        return new TimeLimitEndpointStrategy(
          new RandomEndpointStrategy(discoveryClient.discover(Constants.Service.DATASET_MANAGER)),
          1L, TimeUnit.SECONDS);
      }
    });
  }
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    this.discoveryClient = discoveryClient;
  }

  @Override
  protected void startUp() throws Exception {
    endpointStrategy = new TimeLimitEndpointStrategy(
      new RandomEndpointStrategy(discoveryClient.discover(
        Constants.Service.STREAMS)), 1L, TimeUnit.SECONDS);
  }
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  private EndpointStrategy discover(String discoverName) throws ExecutionException {
    LOG.debug("Looking up service name {}", discoverName);

    EndpointStrategy endpointStrategy = new RandomEndpointStrategy(discoveryServiceClient.discover(discoverName));
    if (new TimeLimitEndpointStrategy(endpointStrategy, 300L, TimeUnit.MILLISECONDS).pick() == null) {
      LOG.debug("Discoverable endpoint {} not found", discoverName);
    }
    return endpointStrategy;
  }
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  @Inject
  public RemoteDatasetOpExecutor(final DiscoveryServiceClient discoveryClient) {
    this.endpointStrategySupplier = Suppliers.memoize(new Supplier<EndpointStrategy>() {
      @Override
      public EndpointStrategy get() {
        return new TimeLimitEndpointStrategy(
          new RandomEndpointStrategy(
            discoveryClient.discover(Constants.Service.DATASET_EXECUTOR)), 2L, TimeUnit.SECONDS);
      }
    });
  }
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  @Override
  public boolean isServiceAvailable() {
    try {
      Iterable<Discoverable> discoverables = this.discoveryServiceClient.discover(serviceName);
      EndpointStrategy endpointStrategy = new TimeLimitEndpointStrategy(
        new RandomEndpointStrategy(discoverables), discoveryTimeout, TimeUnit.SECONDS);
      Discoverable discoverable = endpointStrategy.pick();
      if (discoverable == null) {
        return false;
      }

      return txClient.status().equals(Constants.Monitor.STATUS_OK);
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  @Inject
  public DiscoveryExploreClient(final DiscoveryServiceClient discoveryClient) {
    this.endpointStrategySupplier = Suppliers.memoize(new Supplier<EndpointStrategy>() {
      @Override
      public EndpointStrategy get() {
        return new TimeLimitEndpointStrategy(
          new RandomEndpointStrategy(
            discoveryClient.discover(Service.EXPLORE_HTTP_USER_SERVICE)), 3L, TimeUnit.SECONDS);
      }
    });
  }
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Related Classes of co.cask.cdap.common.discovery.TimeLimitEndpointStrategy

  • co.cask.cdap.data2.datafabric.dataset.DatasetServiceClient
  • co.cask.cdap.data2.datafabric.dataset.service.executor.RemoteDatasetOpExecutor
  • co.cask.cdap.explore.client.DiscoveryExploreClient
  • co.cask.cdap.gateway.collector.FlumeAdapter
  • co.cask.cdap.gateway.handlers.AppFabricHttpHandler
  • co.cask.cdap.gateway.router.RouterServiceLookup
  • co.cask.cdap.internal.app.deploy.pipeline.DeletedProgramHandlerStage
  • co.cask.cdap.internal.app.runtime.distributed.TransactionServiceManager
  • co.cask.cdap.security.authorization.ACLClient
  • org.apache.twill.discovery.Discoverable
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