com.google.auth.http.HttpCredentialsAdapter Java Examples

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private void initializeCloudIoT() {
  projectPath = "projects/" + projectId + "/locations/" + cloudRegion;
  try {
    System.err.println("Initializing with default credentials...");
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault().createScoped(CloudIotScopes.all());
    JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
    HttpRequestInitializer init = new HttpCredentialsAdapter(credential);
    cloudIotService =
        new CloudIot.Builder(GoogleNetHttpTransport.newTrustedTransport(), jsonFactory, init)
            .setApplicationName("com.google.iot.bos")
            .build();
    cloudIotRegistries = cloudIotService.projects().locations().registries();
    System.err.println("Created service for project " + projectPath);
  } catch (Exception e) {
    throw new RuntimeException("While initializing Cloud IoT project " + projectPath, e);
  }
}
 

@Test
public void testExplicitTimeouts() throws Exception {
  FirebaseApp app = FirebaseApp.initializeApp(new FirebaseOptions.Builder()
      .setCredentials(new MockGoogleCredentials("token"))
      .setConnectTimeout(CONNECT_TIMEOUT_MILLIS)
      .setReadTimeout(READ_TIMEOUT_MILLIS)
      .build());
  HttpRequest request = TestUtils.createRequest();

  FirebaseRequestInitializer initializer = new FirebaseRequestInitializer(app);
  initializer.initialize(request);

  assertEquals(CONNECT_TIMEOUT_MILLIS, request.getConnectTimeout());
  assertEquals(READ_TIMEOUT_MILLIS, request.getReadTimeout());
  assertEquals("Bearer token", request.getHeaders().getAuthorization());
  assertEquals(HttpRequest.DEFAULT_NUMBER_OF_RETRIES, request.getNumberOfRetries());
  assertNull(request.getIOExceptionHandler());
  assertTrue(request.getUnsuccessfulResponseHandler() instanceof HttpCredentialsAdapter);
}
 

/** Delete the given device from the registry. */
protected static void deleteDevice(
    String deviceId, String projectId, String cloudRegion, String registryName)
    throws GeneralSecurityException, IOException {
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault().createScoped(CloudIotScopes.all());
  JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
  HttpRequestInitializer init = new HttpCredentialsAdapter(credential);
  final CloudIot service =
      new CloudIot.Builder(GoogleNetHttpTransport.newTrustedTransport(), jsonFactory, init)
          .setApplicationName(APP_NAME)
          .build();

  final String devicePath =
      String.format(
          "projects/%s/locations/%s/registries/%s/devices/%s",
          projectId, cloudRegion, registryName, deviceId);

  System.out.println("Deleting device " + devicePath);
  service.projects().locations().registries().devices().delete(devicePath).execute();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  HttpHeaders headers = new HttpHeaders();
  headers.set("X-GFE-SSL", "yes");
  // Avoid parsing multipart boundaries by setting 'application/dicom' HTTP header.
  // Add 'transfer-syntax=*' to avoid transcoding by returning the file in the format it
  // was originally stored in.
  headers.setAccept("application/dicom; transfer-syntax=*");
  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

@Before
public void setUp() throws Exception {
  var defaultCredentials = GoogleCredentials.getApplicationDefault();

  var serviceCredentials = ImpersonatedCredentials.create(
      defaultCredentials, SERVICE_ACCOUNT,
      List.of(), List.of("https://www.googleapis.com/auth/cloud-platform"), 300);

  try {
    serviceCredentials.refreshAccessToken();
  } catch (IOException e) {
    // Do not run this test if we do not have permission to impersonate the test user.
    Assume.assumeNoException(e);
  }

  iam = new Iam.Builder(
      Utils.getDefaultTransport(), Utils.getDefaultJsonFactory(),
      new HttpCredentialsAdapter(serviceCredentials.createScoped(IamScopes.all())))
      .setApplicationName("styx-test")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

/** Delete this registry from Cloud IoT. */
public static void deleteRegistry(String cloudRegion, String projectId, String registryName)
    throws GeneralSecurityException, IOException {
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault().createScoped(CloudIotScopes.all());
  JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
  HttpRequestInitializer init = new HttpCredentialsAdapter(credential);
  final CloudIot service =
      new CloudIot.Builder(GoogleNetHttpTransport.newTrustedTransport(), jsonFactory, init)
          .setApplicationName(APP_NAME)
          .build();

  final String registryPath =
      String.format(
          "projects/%s/locations/%s/registries/%s", projectId, cloudRegion, registryName);

  System.out.println("Deleting: " + registryPath);
  service.projects().locations().registries().delete(registryPath).execute();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static Iam initService() throws GeneralSecurityException, IOException {
  // Use the Application Default Credentials strategy for authentication. For more info, see:
  // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
  // Initialize the IAM service, which can be used to send requests to the IAM API.
  Iam service =
      new Iam.Builder(
              GoogleNetHttpTransport.newTrustedTransport(),
              JacksonFactory.getDefaultInstance(),
              new HttpCredentialsAdapter(credential))
          .setApplicationName("service-accounts")
          .build();
  return service;
}
 

private static Iam initService() throws GeneralSecurityException, IOException {
  // Use the Application Default Credentials strategy for authentication. For more info, see:
  // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
  // Initialize the IAM service, which can be used to send requests to the IAM API.
  Iam service =
      new Iam.Builder(
              GoogleNetHttpTransport.newTrustedTransport(),
              JacksonFactory.getDefaultInstance(),
              new HttpCredentialsAdapter(credential))
          .setApplicationName("service-accounts")
          .build();
  return service;
}
 

public static CloudResourceManager createCloudResourceManagerService()
    throws IOException, GeneralSecurityException {
  // Use the Application Default Credentials strategy for authentication. For more info, see:
  // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));

  CloudResourceManager service =
      new CloudResourceManager.Builder(
              GoogleNetHttpTransport.newTrustedTransport(),
              JacksonFactory.getDefaultInstance(),
              new HttpCredentialsAdapter(credential))
          .setApplicationName("service-accounts")
          .build();
  return service;
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

/** Retrieves registry metadata from a project. * */
protected static DeviceRegistry getRegistry(
    String projectId, String cloudRegion, String registryName)
    throws GeneralSecurityException, IOException {
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault().createScoped(CloudIotScopes.all());
  JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
  HttpRequestInitializer init = new HttpCredentialsAdapter(credential);
  final CloudIot service =
      new CloudIot.Builder(GoogleNetHttpTransport.newTrustedTransport(), jsonFactory, init)
          .setApplicationName(APP_NAME)
          .build();

  final String registryPath =
      String.format(
          "projects/%s/locations/%s/registries/%s", projectId, cloudRegion, registryName);

  return service.projects().locations().registries().get(registryPath).execute();
}
 

/**
 * Create a Storage Transfer client using user-supplied credentials and other settings.
 *
 * @param httpTransport a user-supplied HttpTransport
 * @param jsonFactory a user-supplied JsonFactory
 * @param credential a user-supplied Google credential
 * @return a Storage Transfer client
 */
public static Storagetransfer createStorageTransferClient(
    HttpTransport httpTransport, JsonFactory jsonFactory, GoogleCredentials credential) {
  Preconditions.checkNotNull(httpTransport);
  Preconditions.checkNotNull(jsonFactory);
  Preconditions.checkNotNull(credential);

  // In some cases, you need to add the scope explicitly.
  if (credential.createScopedRequired()) {
    credential = credential.createScoped(StoragetransferScopes.all());
  }
  // Please use custom HttpRequestInitializer for automatic
  // retry upon failures. We provide a simple reference
  // implementation in the "Retry Handling" section.
  HttpRequestInitializer initializer = new HttpCredentialsAdapter(credential);
  return new Storagetransfer.Builder(httpTransport, jsonFactory, initializer)
      .setApplicationName("storagetransfer-sample")
      .build();
}
 

public static CloudResourceManager initializeService()
    throws IOException, GeneralSecurityException {
  // Use the Application Default Credentials strategy for authentication. For more info, see:
  // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));

  // Creates the Cloud Resource Manager service object.
  CloudResourceManager service =
      new CloudResourceManager.Builder(
              GoogleNetHttpTransport.newTrustedTransport(),
              JacksonFactory.getDefaultInstance(),
              new HttpCredentialsAdapter(credential))
          .setApplicationName("service-accounts")
          .build();
  return service;
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static Iam initService() throws GeneralSecurityException, IOException {
  // Use the Application Default Credentials strategy for authentication. For more info, see:
  // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
  // Initialize the IAM service, which can be used to send requests to the IAM API.
  Iam service =
      new Iam.Builder(
              GoogleNetHttpTransport.newTrustedTransport(),
              JacksonFactory.getDefaultInstance(),
              new HttpCredentialsAdapter(credential))
          .setApplicationName("service-accounts")
          .build();
  return service;
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

/**
 * Clone request and add an IAP Bearer Authorization header with signed JWT token.
 *
 * @param request Request to add authorization header
 * @param iapClientId OAuth 2.0 client ID for IAP protected resource
 * @return Clone of request with Bearer style authorization header with signed jwt token.
 * @throws IOException exception creating signed JWT
 */
public static HttpRequest buildIapRequest(HttpRequest request, String iapClientId)
    throws IOException {

  IdTokenProvider idTokenProvider = getIdTokenProvider();
  IdTokenCredentials credentials =
      IdTokenCredentials.newBuilder()
          .setIdTokenProvider(idTokenProvider)
          .setTargetAudience(iapClientId)
          .build();

  HttpRequestInitializer httpRequestInitializer = new HttpCredentialsAdapter(credentials);

  return httpTransport
      .createRequestFactory(httpRequestInitializer)
      .buildRequest(request.getRequestMethod(), request.getUrl(), request.getContent());
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

private static CloudHealthcare createClient() throws IOException {
  // Use Application Default Credentials (ADC) to authenticate the requests
  // For more information see https://cloud.google.com/docs/authentication/production
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault()
          .createScoped(Collections.singleton(CloudHealthcareScopes.CLOUD_PLATFORM));

  // Create a HttpRequestInitializer, which will provide a baseline configuration to all requests.
  HttpRequestInitializer requestInitializer =
      request -> {
        new HttpCredentialsAdapter(credential).initialize(request);
        request.setConnectTimeout(60000); // 1 minute connect timeout
        request.setReadTimeout(60000); // 1 minute read timeout
      };

  // Build the client for interacting with the service.
  return new CloudHealthcare.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
      .setApplicationName("your-application-name")
      .build();
}
 

/** Retrieves device metadata from a registry. * */
protected static Device getDevice(
    String deviceId, String projectId, String cloudRegion, String registryName)
    throws GeneralSecurityException, IOException {
  GoogleCredentials credential =
      GoogleCredentials.getApplicationDefault().createScoped(CloudIotScopes.all());
  JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();
  HttpRequestInitializer init = new HttpCredentialsAdapter(credential);
  final CloudIot service =
      new CloudIot.Builder(GoogleNetHttpTransport.newTrustedTransport(), jsonFactory, init)
          .setApplicationName(APP_NAME)
          .build();

  final String devicePath =
      String.format(
          "projects/%s/locations/%s/registries/%s/devices/%s",
          projectId, cloudRegion, registryName, deviceId);

  System.out.println("Retrieving device " + devicePath);
  return service.projects().locations().registries().devices().get(devicePath).execute();
}