com.google.pubsub.v1.ListTopicsRequest Java Examples

The following examples show how to use com.google.pubsub.v1.ListTopicsRequest. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: PublisherServiceTest.java    From kafka-pubsub-emulator with Apache License 2.0 6 votes vote down vote up 
@Test
public void listTopics() {
  ListTopicsRequest request =
      ListTopicsRequest.newBuilder().setProject("projects/project-1").build();
  ListTopicsResponse response = blockingStub.listTopics(request);

  assertThat(
      response.getTopicsList(),
      Matchers.contains(
          com.google.pubsub.v1.Topic.newBuilder()
              .setName(TestHelpers.PROJECT1_TOPIC1)
              .putLabels(KAFKA_TOPIC, "kafka-topic-1")
              .build(),
          com.google.pubsub.v1.Topic.newBuilder()
              .setName(TestHelpers.PROJECT1_TOPIC2)
              .putLabels(KAFKA_TOPIC, "kafka-topic-2")
              .build()));
}
Example #2
Source File: PubsubGrpcClient.java    From beam with Apache License 2.0 6 votes vote down vote up 
@Override
public List<TopicPath> listTopics(ProjectPath project) throws IOException {
  ListTopicsRequest.Builder request =
      ListTopicsRequest.newBuilder().setProject(project.getPath()).setPageSize(LIST_BATCH_SIZE);
  ListTopicsResponse response = publisherStub().listTopics(request.build());
  if (response.getTopicsCount() == 0) {
    return ImmutableList.of();
  }
  List<TopicPath> topics = new ArrayList<>(response.getTopicsCount());
  while (true) {
    for (Topic topic : response.getTopicsList()) {
      topics.add(topicPathFromPath(topic.getName()));
    }
    if (response.getNextPageToken().isEmpty()) {
      break;
    }
    request.setPageToken(response.getNextPageToken());
    response = publisherStub().listTopics(request.build());
  }
  return topics;
}
Example #3
Source File: GoogleAuthClient.java    From grpc-java with Apache License 2.0 6 votes vote down vote up 
/**
 * Get topics (max 10) for our project ID: the topic list is logged to the logger.
 *
 * @param projectID  the GCP project ID to get the pubsub topics for. This is a string like
 *                   "projects/balmy-cirrus-225307" where "balmy-cirrus-225307" is
 *                   the project ID for the project you created.
 */
public void getTopics(String projectID) {
  logger.log(Level.INFO, "Will try to get topics for project {0} ...", projectID);

  ListTopicsRequest request = ListTopicsRequest.newBuilder()
          .setPageSize(10)        // get max 10 topics
          .setProject(projectID)  // for our projectID
          .build();

  ListTopicsResponse response;
  try {
    response = blockingStub.listTopics(request);
  } catch (StatusRuntimeException e) {
    logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus());
    return;
  }
  logger.log(Level.INFO, "Topics list:\n {0}", response.getTopicsList());
}
Example #4
Source File: PublisherService.java    From kafka-pubsub-emulator with Apache License 2.0 5 votes vote down vote up 
@Override
public void listTopics(
    ListTopicsRequest request, StreamObserver<ListTopicsResponse> responseObserver) {
  logger.atFine().log("Listing Topics for %s", request);
  PaginationManager<Topic> paginationManager =
      new PaginationManager<>(
          configurationManager.getTopics(request.getProject()), Topic::getName);
  ListTopicsResponse response =
      ListTopicsResponse.newBuilder()
          .addAllTopics(paginationManager.paginate(request.getPageSize(), request.getPageToken()))
          .setNextPageToken(paginationManager.getNextToken(Topic::getName))
          .build();
  responseObserver.onNext(response);
  responseObserver.onCompleted();
}
Example #5
Source File: PublisherServiceTest.java    From kafka-pubsub-emulator with Apache License 2.0 5 votes vote down vote up 
@Test
public void listTopics_withPagination() {
  ListTopicsRequest request =
      ListTopicsRequest.newBuilder().setProject("projects/project-1").setPageSize(1).build();
  ListTopicsResponse response = blockingStub.listTopics(request);

  assertThat(response.getTopicsList(), Matchers.hasSize(1));
  assertThat(
      response.getTopicsList(),
      Matchers.contains(
          Topic.newBuilder()
              .setName(TestHelpers.PROJECT1_TOPIC1)
              .putLabels(KAFKA_TOPIC, "kafka-topic-1")
              .build()));
  assertThat(response.getNextPageToken(), Matchers.not(Matchers.isEmptyOrNullString()));

  request = request.toBuilder().setPageToken(response.getNextPageToken()).setPageSize(0).build();
  response = blockingStub.listTopics(request);
  assertThat(response.getTopicsList(), Matchers.hasSize(1));
  assertThat(
      response.getTopicsList(),
      Matchers.contains(
          Topic.newBuilder()
              .setName("projects/project-1/topics/topic-2")
              .putLabels(KAFKA_TOPIC, "kafka-topic-2")
              .build()));
  assertThat(response.getNextPageToken(), Matchers.isEmptyOrNullString());
}
Example #6
Source File: Main.java    From cloud-pubsub-samples-java with Apache License 2.0 5 votes vote down vote up 
public static void main(final String[] args) throws Exception {

        if (args.length == 0) {
            System.err.println("Please specify your project name.");
            System.exit(1);
        }
        final String project = args[0];
        ManagedChannelImpl channelImpl = NettyChannelBuilder
            .forAddress("pubsub.googleapis.com", 443)
            .negotiationType(NegotiationType.TLS)
            .build();
        GoogleCredentials creds = GoogleCredentials.getApplicationDefault();
        // Down-scope the credential to just the scopes required by the service
        creds = creds.createScoped(Arrays.asList("https://www.googleapis.com/auth/pubsub"));
        // Intercept the channel to bind the credential
        ExecutorService executor = Executors.newSingleThreadExecutor();
        ClientAuthInterceptor interceptor = new ClientAuthInterceptor(creds, executor);
        Channel channel = ClientInterceptors.intercept(channelImpl, interceptor);
        // Create a stub using the channel that has the bound credential
        PublisherGrpc.PublisherBlockingStub publisherStub = PublisherGrpc.newBlockingStub(channel);
        ListTopicsRequest request = ListTopicsRequest.newBuilder()
                .setPageSize(10)
                .setProject("projects/" + project)
                .build();
        ListTopicsResponse resp = publisherStub.listTopics(request);
        System.out.println("Found " + resp.getTopicsCount() + " topics.");
        for (Topic topic : resp.getTopicsList()) {
            System.out.println(topic.getName());
        }
    }
Example #7
Source File: TestApp.java    From gcpsamples with Apache License 2.0 4 votes vote down vote up 
public TestApp() {
	try
	{
		/*
		// For GoogleAPIs
		HttpTransport httpTransport = new NetHttpTransport();             
		JacksonFactory jsonFactory = new JacksonFactory();
		//ComputeCredential credential = new ComputeCredential.Builder(httpTransport, jsonFactory).build();	
		GoogleCredential credential = GoogleCredential.getApplicationDefault(httpTransport,jsonFactory);				            
		if (credential.createScopedRequired())
		    credential = credential.createScoped(Arrays.asList(Oauth2Scopes.USERINFO_EMAIL));           				            
		Oauth2 service = new Oauth2.Builder(httpTransport, jsonFactory, credential)
		            .setApplicationName("oauth client")   
		            .build();				            
		Userinfoplus ui = service.userinfo().get().execute();
		System.out.println(ui.getEmail());
		*/

         // Using Google Cloud APIs
	  Storage storage_service = StorageOptions.newBuilder()
		.build()
		.getService();	
	  for (Bucket b : storage_service.list().iterateAll()){
		  System.out.println(b);
	  }

         // String cred_file = "/path/to/cred.json";
	  //GoogleCredentials creds = GoogleCredentials.fromStream(new FileInputStream(cred_file));	
	  GoogleCredentials creds = GoogleCredentials.getApplicationDefault();	  	  
	  FixedCredentialsProvider credentialsProvider = FixedCredentialsProvider.create(creds);
	  
	  ///ManagedChannel channel = ManagedChannelBuilder.forTarget("pubsub.googleapis.com:443").build();
         //TransportChannelProvider channelProvider = FixedTransportChannelProvider.create(GrpcTransportChannel.create(channel));	
	  
	  TransportChannelProvider channelProvider = TopicAdminSettings.defaultTransportChannelProvider();

	  TopicAdminClient topicClient =
		  TopicAdminClient.create(
			  TopicAdminSettings.newBuilder()
				  .setTransportChannelProvider(channelProvider)
				  .setCredentialsProvider(credentialsProvider)
				  .build());

	  ListTopicsRequest listTopicsRequest =
						ListTopicsRequest.newBuilder()
							.setProject(ProjectName.format("your_project"))
							.build();
	  ListTopicsPagedResponse response = topicClient.listTopics(listTopicsRequest);
	  Iterable<Topic> topics = response.iterateAll();
	  for (Topic topic : topics) 
		 System.out.println(topic);
	 		  

	} 
	catch (Exception ex) {
		System.out.println("Error:  " + ex);
	}
}
Example #8
Source File: TestApp.java    From gcpsamples with Apache License 2.0 4 votes vote down vote up 
public TestApp() {
		try
		{

			// use env or set the path directly
			String cred_env = System.getenv("GOOGLE_APPLICATION_CREDENTIALS");
			cred_env = "/path/to/your/cert.json";
			
/*
			<!--use:
				<dependency>
				<groupId>com.google.api-client</groupId>
				<artifactId>google-api-client</artifactId>
				<version>1.23.0</version>
				</dependency>
				<dependency>
				<groupId>com.google.apis</groupId>
				<artifactId>google-api-services-oauth2</artifactId>
				<version>v2-rev114-1.22.0</version>
				</dependency>
			--> 
			HttpTransport httpTransport = new NetHttpTransport();             
			JacksonFactory jsonFactory = new JacksonFactory();

            // unset GOOGLE_APPLICATION_CREDENTIALS
            //String SERVICE_ACCOUNT_JSON_FILE = "YOUR_SERVICE_ACCOUNT_JSON_FILE.json";
            //FileInputStream inputStream = new FileInputStream(new File(SERVICE_ACCOUNT_JSON_FILE));
            //GoogleCredential credential = GoogleCredential.fromStream(inputStream, httpTransport, jsonFactory);

			// to use application default credentials and a JSON file, set the environment variable first:
            // export GOOGLE_APPLICATION_CREDENTIALS=YOUR_SERVICE_ACCOUNT_JSON_FILE.json        
            GoogleCredential credential = GoogleCredential.getApplicationDefault(httpTransport,jsonFactory);

            if (credential.createScopedRequired())
                credential = credential.createScoped(Arrays.asList(Oauth2Scopes.USERINFO_EMAIL));

			Oauth2 service = new Oauth2.Builder(httpTransport, jsonFactory, credential)
			            .setApplicationName("oauth client")   
			            .build();				            
			Userinfoplus ui = service.userinfo().get().execute();
			System.out.println(ui.getEmail());
*/
/* 
          Using Google Cloud APIs with service account file
		  // You can also just export an export GOOGLE_APPLICATION_CREDENTIALS and use StorageOptions.defaultInstance().service()
		  // see: https://github.com/google/google-auth-library-java#google-auth-library-oauth2-http
		  uncomment the dependencies for google-api-client
		  
			<dependency>
				<groupId>com.google.cloud</groupId>
				<artifactId>google-cloud-storage</artifactId>
				<version>1.35.0</version>
			</dependency>

			<dependency>
				<groupId>com.google.cloud</groupId>
				<artifactId>google-cloud-pubsub</artifactId>
				<version>1.35.0</version>
			</dependency>
*/
		  
		  
		  Storage storage_service = StorageOptions.newBuilder()
			.build()
			.getService();	
		  for (Bucket b : storage_service.list().iterateAll()){
			  System.out.println(b);
		  }

		  //GoogleCredentials creds = GoogleCredentials.fromStream(new FileInputStream(cred_env));	
		  GoogleCredentials creds = GoogleCredentials.getApplicationDefault();	  	  
		  FixedCredentialsProvider credentialsProvider = FixedCredentialsProvider.create(creds);
		  
		  ///ManagedChannel channel = ManagedChannelBuilder.forTarget("pubsub.googleapis.com:443").build();
          //TransportChannelProvider channelProvider = FixedTransportChannelProvider.create(GrpcTransportChannel.create(channel));	
		  
		  TransportChannelProvider channelProvider = TopicAdminSettings.defaultTransportChannelProvider();

		  TopicAdminClient topicClient =
			  TopicAdminClient.create(
				  TopicAdminSettings.newBuilder()
					  .setTransportChannelProvider(channelProvider)
					  .setCredentialsProvider(credentialsProvider)
					  .build());

		  ListTopicsRequest listTopicsRequest =
							ListTopicsRequest.newBuilder()
								.setProject(ProjectName.format("your_project"))
								.build();
		  ListTopicsPagedResponse response = topicClient.listTopics(listTopicsRequest);
		  Iterable<Topic> topics = response.iterateAll();
		  for (Topic topic : topics) 
			 System.out.println(topic);
		 

		} 
		catch (Exception ex) {
			System.out.println("Error:  " + ex);
		}
	}