TopicAdminClient (Google Cloud Pub/Sub Parent 1.123.18 API)

java.lang.Object
- com.google.cloud.pubsub.v1.TopicAdminClient

All Implemented Interfaces:: com.google.api.gax.core.BackgroundResource, AutoCloseable

@Generated(value="by gapic-generator-java")
public class TopicAdminClient
extends Object
implements com.google.api.gax.core.BackgroundResource

Service Description: The service that an application uses to manipulate topics, and to send messages to a topic.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName name = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   Topic response = topicAdminClient.createTopic(name);
 }

Note: close() needs to be called on the TopicAdminClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of TopicAdminSettings to create(). For example:

To customize credentials:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 TopicAdminSettings topicAdminSettings =
     TopicAdminSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 TopicAdminClient topicAdminClient = TopicAdminClient.create(topicAdminSettings);

To customize the endpoint:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 TopicAdminSettings topicAdminSettings =
     TopicAdminSettings.newBuilder().setEndpoint(myEndpoint).build();
 TopicAdminClient topicAdminClient = TopicAdminClient.create(topicAdminSettings);

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 TopicAdminSettings topicAdminSettings = TopicAdminSettings.newHttpJsonBuilder().build();
 TopicAdminClient topicAdminClient = TopicAdminClient.create(topicAdminSettings);

Please refer to the GitHub repository's samples for more quickstart code snippets.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`TopicAdminClient.ListTopicsFixedSizeCollection`
`static class`	`TopicAdminClient.ListTopicSnapshotsFixedSizeCollection`
`static class`	`TopicAdminClient.ListTopicSnapshotsPage`
`static class`	`TopicAdminClient.ListTopicSnapshotsPagedResponse`
`static class`	`TopicAdminClient.ListTopicsPage`
`static class`	`TopicAdminClient.ListTopicsPagedResponse`
`static class`	`TopicAdminClient.ListTopicSubscriptionsFixedSizeCollection`
`static class`	`TopicAdminClient.ListTopicSubscriptionsPage`
`static class`	`TopicAdminClient.ListTopicSubscriptionsPagedResponse`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`TopicAdminClient(PublisherStub stub)`
`protected`	`TopicAdminClient(TopicAdminSettings settings)` Constructs an instance of TopicAdminClient, using the given settings.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`awaitTermination(long duration, TimeUnit unit)`
`void`	`close()`
`static TopicAdminClient`	`create()` Constructs an instance of TopicAdminClient with default settings.
`static TopicAdminClient`	`create(PublisherStub stub)` Constructs an instance of TopicAdminClient, using the given stub for making calls.
`static TopicAdminClient`	`create(TopicAdminSettings settings)` Constructs an instance of TopicAdminClient, using the given settings.
`Topic`	`createTopic(ProjectTopicName name)` Deprecated. Use `createTopic(TopicName)` instead.
`Topic`	`createTopic(String name)` Creates the given topic with the given name.
`Topic`	`createTopic(Topic request)` Creates the given topic with the given name.
`Topic`	`createTopic(TopicName name)` Creates the given topic with the given name.
`com.google.api.gax.rpc.UnaryCallable<Topic,Topic>`	`createTopicCallable()` Creates the given topic with the given name.
`void`	`deleteTopic(DeleteTopicRequest request)` Deletes the topic with the given name.
`void`	`deleteTopic(ProjectTopicName topic)` Deprecated. Use `deleteTopic(TopicName)` instead.
`void`	`deleteTopic(String topic)` Deletes the topic with the given name.
`void`	`deleteTopic(TopicName topic)` Deletes the topic with the given name.
`com.google.api.gax.rpc.UnaryCallable<DeleteTopicRequest,com.google.protobuf.Empty>`	`deleteTopicCallable()` Deletes the topic with the given name.
`DetachSubscriptionResponse`	`detachSubscription(DetachSubscriptionRequest request)` Detaches a subscription from this topic.
`com.google.api.gax.rpc.UnaryCallable<DetachSubscriptionRequest,DetachSubscriptionResponse>`	`detachSubscriptionCallable()` Detaches a subscription from this topic.
`com.google.iam.v1.Policy`	`getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request)` Gets the access control policy for a resource.
`com.google.iam.v1.Policy`	`getIamPolicy(String resource)` Deprecated. Use `getIamPolicy(GetIamPolicyRequest)` instead.
`com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.GetIamPolicyRequest,com.google.iam.v1.Policy>`	`getIamPolicyCallable()` Gets the access control policy for a resource.
`TopicAdminSettings`	`getSettings()`
`PublisherStub`	`getStub()`
`Topic`	`getTopic(GetTopicRequest request)` Gets the configuration of a topic.
`Topic`	`getTopic(ProjectTopicName topic)` Deprecated. Use `getTopic(TopicName)` instead.
`Topic`	`getTopic(String topic)` Gets the configuration of a topic.
`Topic`	`getTopic(TopicName topic)` Gets the configuration of a topic.
`com.google.api.gax.rpc.UnaryCallable<GetTopicRequest,Topic>`	`getTopicCallable()` Gets the configuration of a topic.
`boolean`	`isShutdown()`
`boolean`	`isTerminated()`
`TopicAdminClient.ListTopicsPagedResponse`	`listTopics(ListTopicsRequest request)` Lists matching topics.
`TopicAdminClient.ListTopicsPagedResponse`	`listTopics(ProjectName project)` Lists matching topics.
`TopicAdminClient.ListTopicsPagedResponse`	`listTopics(String project)` Lists matching topics.
`com.google.api.gax.rpc.UnaryCallable<ListTopicsRequest,ListTopicsResponse>`	`listTopicsCallable()` Lists matching topics.
`TopicAdminClient.ListTopicSnapshotsPagedResponse`	`listTopicSnapshots(ListTopicSnapshotsRequest request)` Lists the names of the snapshots on this topic.
`TopicAdminClient.ListTopicSnapshotsPagedResponse`	`listTopicSnapshots(String topic)` Lists the names of the snapshots on this topic.
`TopicAdminClient.ListTopicSnapshotsPagedResponse`	`listTopicSnapshots(TopicName topic)` Lists the names of the snapshots on this topic.
`com.google.api.gax.rpc.UnaryCallable<ListTopicSnapshotsRequest,ListTopicSnapshotsResponse>`	`listTopicSnapshotsCallable()` Lists the names of the snapshots on this topic.
`com.google.api.gax.rpc.UnaryCallable<ListTopicSnapshotsRequest,TopicAdminClient.ListTopicSnapshotsPagedResponse>`	`listTopicSnapshotsPagedCallable()` Lists the names of the snapshots on this topic.
`com.google.api.gax.rpc.UnaryCallable<ListTopicsRequest,TopicAdminClient.ListTopicsPagedResponse>`	`listTopicsPagedCallable()` Lists matching topics.
`TopicAdminClient.ListTopicSubscriptionsPagedResponse`	`listTopicSubscriptions(ListTopicSubscriptionsRequest request)` Lists the names of the attached subscriptions on this topic.
`TopicAdminClient.ListTopicSubscriptionsPagedResponse`	`listTopicSubscriptions(ProjectTopicName topic)` Deprecated. Use `listTopicSubscriptions(TopicName)` instead.
`TopicAdminClient.ListTopicSubscriptionsPagedResponse`	`listTopicSubscriptions(String topic)` Lists the names of the attached subscriptions on this topic.
`TopicAdminClient.ListTopicSubscriptionsPagedResponse`	`listTopicSubscriptions(TopicName topic)` Lists the names of the attached subscriptions on this topic.
`com.google.api.gax.rpc.UnaryCallable<ListTopicSubscriptionsRequest,ListTopicSubscriptionsResponse>`	`listTopicSubscriptionsCallable()` Lists the names of the attached subscriptions on this topic.
`com.google.api.gax.rpc.UnaryCallable<ListTopicSubscriptionsRequest,TopicAdminClient.ListTopicSubscriptionsPagedResponse>`	`listTopicSubscriptionsPagedCallable()` Lists the names of the attached subscriptions on this topic.
`PublishResponse`	`publish(PublishRequest request)` Adds one or more messages to the topic.
`PublishResponse`	`publish(String topic, List<PubsubMessage> messages)` Adds one or more messages to the topic.
`PublishResponse`	`publish(TopicName topic, List<PubsubMessage> messages)` Adds one or more messages to the topic.
`com.google.api.gax.rpc.UnaryCallable<PublishRequest,PublishResponse>`	`publishCallable()` Adds one or more messages to the topic.
`com.google.iam.v1.Policy`	`setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request)` Sets the access control policy on the specified resource.
`com.google.iam.v1.Policy`	`setIamPolicy(String resource, com.google.iam.v1.Policy policy)` Deprecated. Use `setIamPolicy(SetIamPolicyRequest)` instead.
`com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.SetIamPolicyRequest,com.google.iam.v1.Policy>`	`setIamPolicyCallable()` Sets the access control policy on the specified resource.
`void`	`shutdown()`
`void`	`shutdownNow()`
`com.google.iam.v1.TestIamPermissionsResponse`	`testIamPermissions(String resource, List<String> permissions)` Deprecated. Use `testIamPermissions(TestIamPermissionsRequest)` instead.
`com.google.iam.v1.TestIamPermissionsResponse`	`testIamPermissions(com.google.iam.v1.TestIamPermissionsRequest request)` Returns permissions that a caller has on the specified resource.
`com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.TestIamPermissionsRequest,com.google.iam.v1.TestIamPermissionsResponse>`	`testIamPermissionsCallable()` Returns permissions that a caller has on the specified resource.
`Topic`	`updateTopic(Topic topic, com.google.protobuf.FieldMask updateMask)` Updates an existing topic.
`Topic`	`updateTopic(UpdateTopicRequest request)` Updates an existing topic.
`com.google.api.gax.rpc.UnaryCallable<UpdateTopicRequest,Topic>`	`updateTopicCallable()` Updates an existing topic.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- TopicAdminClient
```
protected TopicAdminClient(TopicAdminSettings settings)
                    throws IOException
```
  Constructs an instance of TopicAdminClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.
  
  Throws:
  
  IOException
- TopicAdminClient
```
protected TopicAdminClient(PublisherStub stub)
```

Method Detail

create

public static final TopicAdminClient create()
                                     throws IOException

Constructs an instance of TopicAdminClient with default settings.

Throws:: IOException

create
```
public static final TopicAdminClient create(TopicAdminSettings settings)
                                     throws IOException
```
Constructs an instance of TopicAdminClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Throws:

IOException

create
```
public static final TopicAdminClient create(PublisherStub stub)
```
Constructs an instance of TopicAdminClient, using the given stub for making calls. This is for advanced usage - prefer using create(TopicAdminSettings).

getSettings

public final TopicAdminSettings getSettings()

getStub
```
public PublisherStub getStub()
```

createTopic

public final Topic createTopic(TopicName name)

Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName name = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   Topic response = topicAdminClient.createTopic(name);
 }

Parameters:: name - Required. The name of the topic. It must have the format `"projects/{project}/topics/{topic}"`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `"goog"`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

createTopic

public final Topic createTopic(String name)

Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String name = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   Topic response = topicAdminClient.createTopic(name);
 }

Parameters:: name - Required. The name of the topic. It must have the format `"projects/{project}/topics/{topic}"`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `"goog"`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

createTopic
```
@Deprecated
public final Topic createTopic(ProjectTopicName name)
```
Deprecated. Use createTopic(TopicName) instead.
Creates the given topic with the given name. See the <a href="https://cloud.google.com/pubsub/docs/admin#resource_names"> resource name rules</a>.
Sample code:
```
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ProjectTopicName name = ProjectTopicName.of("[PROJECT]", "[TOPIC]");
   Topic response = topicAdminClient.createTopic(name);
 }
 
```
Parameters:

name - Required. The name of the topic. It must have the format `"projects/{project}/topics/{topic}"`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `"goog"`.

Throws:

com.google.api.gax.rpc.ApiException - if the remote call fails

createTopic

public final Topic createTopic(Topic request)

Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   Topic request =
       Topic.newBuilder()
           .setName(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .putAllLabels(new HashMap<String, String>())
           .setMessageStoragePolicy(MessageStoragePolicy.newBuilder().build())
           .setKmsKeyName("kmsKeyName412586233")
           .setSchemaSettings(SchemaSettings.newBuilder().build())
           .setSatisfiesPzs(true)
           .setMessageRetentionDuration(Duration.newBuilder().build())
           .build();
   Topic response = topicAdminClient.createTopic(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

createTopicCallable

public final com.google.api.gax.rpc.UnaryCallable<Topic,Topic> createTopicCallable()

Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   Topic request =
       Topic.newBuilder()
           .setName(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .putAllLabels(new HashMap<String, String>())
           .setMessageStoragePolicy(MessageStoragePolicy.newBuilder().build())
           .setKmsKeyName("kmsKeyName412586233")
           .setSchemaSettings(SchemaSettings.newBuilder().build())
           .setSatisfiesPzs(true)
           .setMessageRetentionDuration(Duration.newBuilder().build())
           .build();
   ApiFuture<Topic> future = topicAdminClient.createTopicCallable().futureCall(request);
   // Do something.
   Topic response = future.get();
 }

updateTopic

public final Topic updateTopic(Topic topic,
                               com.google.protobuf.FieldMask updateMask)

Updates an existing topic. Note that certain properties of a topic are not modifiable.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   Topic topic = Topic.newBuilder().build();
   FieldMask updateMask = FieldMask.newBuilder().build();
   Topic response = topicAdminClient.updateTopic(topic, updateMask);
 }

Parameters:: topic - Required. The updated topic object.; updateMask - Required. Indicates which fields in the provided topic to update. Must be specified and non-empty. Note that if `update_mask` contains "message_storage_policy" but the `message_storage_policy` is not set in the `topic` provided above, then the updated value is determined by the policy configured at the project or organization level.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

updateTopic

public final Topic updateTopic(UpdateTopicRequest request)

Updates an existing topic. Note that certain properties of a topic are not modifiable.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   UpdateTopicRequest request =
       UpdateTopicRequest.newBuilder()
           .setTopic(Topic.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Topic response = topicAdminClient.updateTopic(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

updateTopicCallable

public final com.google.api.gax.rpc.UnaryCallable<UpdateTopicRequest,Topic> updateTopicCallable()

Updates an existing topic. Note that certain properties of a topic are not modifiable.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   UpdateTopicRequest request =
       UpdateTopicRequest.newBuilder()
           .setTopic(Topic.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Topic> future = topicAdminClient.updateTopicCallable().futureCall(request);
   // Do something.
   Topic response = future.get();
 }

publish

public final PublishResponse publish(TopicName topic,
                                     List<PubsubMessage> messages)

Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   List<PubsubMessage> messages = new ArrayList<>();
   PublishResponse response = topicAdminClient.publish(topic, messages);
 }

Parameters:: topic - Required. The messages in the request will be published on this topic. Format is `projects/{project}/topics/{topic}`.; messages - Required. The messages to publish.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

publish

public final PublishResponse publish(String topic,
                                     List<PubsubMessage> messages)

Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   List<PubsubMessage> messages = new ArrayList<>();
   PublishResponse response = topicAdminClient.publish(topic, messages);
 }

Parameters:: topic - Required. The messages in the request will be published on this topic. Format is `projects/{project}/topics/{topic}`.; messages - Required. The messages to publish.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

publish

public final PublishResponse publish(PublishRequest request)

Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   PublishRequest request =
       PublishRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .addAllMessages(new ArrayList<PubsubMessage>())
           .build();
   PublishResponse response = topicAdminClient.publish(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

publishCallable

public final com.google.api.gax.rpc.UnaryCallable<PublishRequest,PublishResponse> publishCallable()

Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   PublishRequest request =
       PublishRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .addAllMessages(new ArrayList<PubsubMessage>())
           .build();
   ApiFuture<PublishResponse> future = topicAdminClient.publishCallable().futureCall(request);
   // Do something.
   PublishResponse response = future.get();
 }

getTopic

public final Topic getTopic(TopicName topic)

Gets the configuration of a topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   Topic response = topicAdminClient.getTopic(topic);
 }

Parameters:: topic - Required. The name of the topic to get. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

getTopic

public final Topic getTopic(String topic)

Gets the configuration of a topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   Topic response = topicAdminClient.getTopic(topic);
 }

Parameters:: topic - Required. The name of the topic to get. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

getTopic

@Deprecated
public final Topic getTopic(ProjectTopicName topic)

Deprecated. Use getTopic(TopicName) instead.

Gets the configuration of a topic.

Sample code:


 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ProjectTopicName topic = ProjectTopicName.of("[PROJECT]", "[TOPIC]");
   Topic response = topicAdminClient.getTopic(topic);
 }

Parameters:: topic - Required. The name of the topic to get. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

getTopic

public final Topic getTopic(GetTopicRequest request)

Gets the configuration of a topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   GetTopicRequest request =
       GetTopicRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .build();
   Topic response = topicAdminClient.getTopic(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

getTopicCallable

public final com.google.api.gax.rpc.UnaryCallable<GetTopicRequest,Topic> getTopicCallable()

Gets the configuration of a topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   GetTopicRequest request =
       GetTopicRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .build();
   ApiFuture<Topic> future = topicAdminClient.getTopicCallable().futureCall(request);
   // Do something.
   Topic response = future.get();
 }

listTopics

public final TopicAdminClient.ListTopicsPagedResponse listTopics(ProjectName project)

Lists matching topics.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ProjectName project = ProjectName.of("[PROJECT]");
   for (Topic element : topicAdminClient.listTopics(project).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: project - Required. The name of the project in which to list topics. Format is `projects/{project-id}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopics

public final TopicAdminClient.ListTopicsPagedResponse listTopics(String project)

Lists matching topics.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String project = ProjectName.of("[PROJECT]").toString();
   for (Topic element : topicAdminClient.listTopics(project).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: project - Required. The name of the project in which to list topics. Format is `projects/{project-id}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopics

public final TopicAdminClient.ListTopicsPagedResponse listTopics(ListTopicsRequest request)

Lists matching topics.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicsRequest request =
       ListTopicsRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Topic element : topicAdminClient.listTopics(request).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicsPagedCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicsRequest,TopicAdminClient.ListTopicsPagedResponse> listTopicsPagedCallable()

Lists matching topics.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicsRequest request =
       ListTopicsRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Topic> future = topicAdminClient.listTopicsPagedCallable().futureCall(request);
   // Do something.
   for (Topic element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

listTopicsCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicsRequest,ListTopicsResponse> listTopicsCallable()

Lists matching topics.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicsRequest request =
       ListTopicsRequest.newBuilder()
           .setProject(ProjectName.of("[PROJECT]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListTopicsResponse response = topicAdminClient.listTopicsCallable().call(request);
     for (Topic element : response.getTopicsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

listTopicSubscriptions

public final TopicAdminClient.ListTopicSubscriptionsPagedResponse listTopicSubscriptions(TopicName topic)

Lists the names of the attached subscriptions on this topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   for (String element : topicAdminClient.listTopicSubscriptions(topic).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: topic - Required. The name of the topic that subscriptions are attached to. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSubscriptions

public final TopicAdminClient.ListTopicSubscriptionsPagedResponse listTopicSubscriptions(String topic)

Lists the names of the attached subscriptions on this topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   for (String element : topicAdminClient.listTopicSubscriptions(topic).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: topic - Required. The name of the topic that subscriptions are attached to. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSubscriptions

@Deprecated
public final TopicAdminClient.ListTopicSubscriptionsPagedResponse listTopicSubscriptions(ProjectTopicName topic)

Deprecated. Use listTopicSubscriptions(TopicName) instead.

Lists the names of the subscriptions on this topic.

Sample code:


 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ProjectTopicName topic = ProjectTopicName.of("[PROJECT]", "[TOPIC]");
   for (ProjectSubscriptionName element : topicAdminClient.listTopicSubscriptions(topic).iterateAllAsProjectSubscriptionName()) {
     // doThingsWith(element);
   }
 }

Parameters:: topic - Required. The name of the topic that subscriptions are attached to. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSubscriptions

public final TopicAdminClient.ListTopicSubscriptionsPagedResponse listTopicSubscriptions(ListTopicSubscriptionsRequest request)

Lists the names of the attached subscriptions on this topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSubscriptionsRequest request =
       ListTopicSubscriptionsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (String element : topicAdminClient.listTopicSubscriptions(request).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSubscriptionsPagedCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicSubscriptionsRequest,TopicAdminClient.ListTopicSubscriptionsPagedResponse> listTopicSubscriptionsPagedCallable()

Lists the names of the attached subscriptions on this topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSubscriptionsRequest request =
       ListTopicSubscriptionsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<String> future =
       topicAdminClient.listTopicSubscriptionsPagedCallable().futureCall(request);
   // Do something.
   for (String element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

listTopicSubscriptionsCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicSubscriptionsRequest,ListTopicSubscriptionsResponse> listTopicSubscriptionsCallable()

Lists the names of the attached subscriptions on this topic.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSubscriptionsRequest request =
       ListTopicSubscriptionsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListTopicSubscriptionsResponse response =
         topicAdminClient.listTopicSubscriptionsCallable().call(request);
     for (String element : response.getSubscriptionsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

listTopicSnapshots

public final TopicAdminClient.ListTopicSnapshotsPagedResponse listTopicSnapshots(TopicName topic)

Lists the names of the snapshots on this topic. Snapshots are used in [Seek](https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   for (String element : topicAdminClient.listTopicSnapshots(topic).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: topic - Required. The name of the topic that snapshots are attached to. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSnapshots

public final TopicAdminClient.ListTopicSnapshotsPagedResponse listTopicSnapshots(String topic)

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   for (String element : topicAdminClient.listTopicSnapshots(topic).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: topic - Required. The name of the topic that snapshots are attached to. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSnapshots

public final TopicAdminClient.ListTopicSnapshotsPagedResponse listTopicSnapshots(ListTopicSnapshotsRequest request)

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSnapshotsRequest request =
       ListTopicSnapshotsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (String element : topicAdminClient.listTopicSnapshots(request).iterateAll()) {
     // doThingsWith(element);
   }
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

listTopicSnapshotsPagedCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicSnapshotsRequest,TopicAdminClient.ListTopicSnapshotsPagedResponse> listTopicSnapshotsPagedCallable()

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSnapshotsRequest request =
       ListTopicSnapshotsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<String> future =
       topicAdminClient.listTopicSnapshotsPagedCallable().futureCall(request);
   // Do something.
   for (String element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }

listTopicSnapshotsCallable

public final com.google.api.gax.rpc.UnaryCallable<ListTopicSnapshotsRequest,ListTopicSnapshotsResponse> listTopicSnapshotsCallable()

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ListTopicSnapshotsRequest request =
       ListTopicSnapshotsRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListTopicSnapshotsResponse response =
         topicAdminClient.listTopicSnapshotsCallable().call(request);
     for (String element : response.getSnapshotsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }

deleteTopic

public final void deleteTopic(TopicName topic)

Deletes the topic with the given name. Returns `NOT_FOUND` if the topic does not exist. After a topic is deleted, a new topic may be created with the same name; this is an entirely new topic with none of the old configuration or subscriptions. Existing subscriptions to this topic are not deleted, but their `topic` field is set to `_deleted-topic_`.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TopicName topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]");
   topicAdminClient.deleteTopic(topic);
 }

Parameters:: topic - Required. Name of the topic to delete. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

deleteTopic

public final void deleteTopic(String topic)

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String topic = TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString();
   topicAdminClient.deleteTopic(topic);
 }

Parameters:: topic - Required. Name of the topic to delete. Format is `projects/{project}/topics/{topic}`.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

deleteTopic
```
@Deprecated
public final void deleteTopic(ProjectTopicName topic)
```
Deprecated. Use deleteTopic(TopicName) instead.
Deletes the topic with the given name. Returns `NOT_FOUND` if the topic does not exist. After a topic is deleted, a new topic may be created with the same name; this is an entirely new topic with none of the old configuration or subscriptions. Existing subscriptions to this topic are not deleted, but their `topic` field is set to `_deleted-topic_`.
Sample code:
```
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   ProjectTopicName topic = ProjectTopicName.of("[PROJECT]", "[TOPIC]");
   topicAdminClient.deleteTopic(topic);
 }
 
```
Parameters:

topic - Required. Name of the topic to delete. Format is `projects/{project}/topics/{topic}`.

Throws:

com.google.api.gax.rpc.ApiException - if the remote call fails

deleteTopic

public final void deleteTopic(DeleteTopicRequest request)

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   DeleteTopicRequest request =
       DeleteTopicRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .build();
   topicAdminClient.deleteTopic(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

deleteTopicCallable

public final com.google.api.gax.rpc.UnaryCallable<DeleteTopicRequest,com.google.protobuf.Empty> deleteTopicCallable()

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   DeleteTopicRequest request =
       DeleteTopicRequest.newBuilder()
           .setTopic(TopicName.ofProjectTopicName("[PROJECT]", "[TOPIC]").toString())
           .build();
   ApiFuture<Empty> future = topicAdminClient.deleteTopicCallable().futureCall(request);
   // Do something.
   future.get();
 }

detachSubscription

public final DetachSubscriptionResponse detachSubscription(DetachSubscriptionRequest request)

Detaches a subscription from this topic. All messages retained in the subscription are dropped. Subsequent `Pull` and `StreamingPull` requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will stop.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   DetachSubscriptionRequest request =
       DetachSubscriptionRequest.newBuilder()
           .setSubscription(SubscriptionName.of("[PROJECT]", "[SUBSCRIPTION]").toString())
           .build();
   DetachSubscriptionResponse response = topicAdminClient.detachSubscription(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

detachSubscriptionCallable

public final com.google.api.gax.rpc.UnaryCallable<DetachSubscriptionRequest,DetachSubscriptionResponse> detachSubscriptionCallable()

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   DetachSubscriptionRequest request =
       DetachSubscriptionRequest.newBuilder()
           .setSubscription(SubscriptionName.of("[PROJECT]", "[SUBSCRIPTION]").toString())
           .build();
   ApiFuture<DetachSubscriptionResponse> future =
       topicAdminClient.detachSubscriptionCallable().futureCall(request);
   // Do something.
   DetachSubscriptionResponse response = future.get();
 }

setIamPolicy

public final com.google.iam.v1.Policy setIamPolicy(com.google.iam.v1.SetIamPolicyRequest request)

Sets the access control policy on the specified resource. Replacesany existing policy.

Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED`errors.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   Policy response = topicAdminClient.setIamPolicy(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

setIamPolicy
```
@Deprecated
public final com.google.iam.v1.Policy setIamPolicy(String resource,
                                                               com.google.iam.v1.Policy policy)
```
Deprecated. Use setIamPolicy(SetIamPolicyRequest) instead.
Sets the access control policy on the specified resource. Replaces any existing policy.
Can return Public Errors: NOT_FOUND, INVALID_ARGUMENT and PERMISSION_DENIED
Sample code:
```
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String formattedResource = ProjectTopicName.format("[PROJECT]", "[TOPIC]");
   Policy policy = Policy.newBuilder().build();
   Policy response = topicAdminClient.setIamPolicy(formattedResource, policy);
 }
 
```
Parameters:

resource - REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field.

policy - REQUIRED: The complete policy to be applied to the `resource`. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.

Throws:

com.google.api.gax.rpc.ApiException - if the remote call fails

setIamPolicyCallable

public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.SetIamPolicyRequest,com.google.iam.v1.Policy> setIamPolicyCallable()

Sets the access control policy on the specified resource. Replacesany existing policy.

Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED`errors.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   SetIamPolicyRequest request =
       SetIamPolicyRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .setPolicy(Policy.newBuilder().build())
           .setUpdateMask(FieldMask.newBuilder().build())
           .build();
   ApiFuture<Policy> future = topicAdminClient.setIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }

getIamPolicy

public final com.google.iam.v1.Policy getIamPolicy(com.google.iam.v1.GetIamPolicyRequest request)

Gets the access control policy for a resource. Returns an empty policyif the resource exists and does not have a policy set.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   Policy response = topicAdminClient.getIamPolicy(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

getIamPolicy
```
@Deprecated
public final com.google.iam.v1.Policy getIamPolicy(String resource)
```
Deprecated. Use getIamPolicy(GetIamPolicyRequest) instead.
Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.
Sample code:
```
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String formattedResource = ProjectTopicName.format("[PROJECT]", "[TOPIC]");
   Policy response = topicAdminClient.getIamPolicy(formattedResource);
 }
 
```
Parameters:

resource - REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field.

Throws:

com.google.api.gax.rpc.ApiException - if the remote call fails

getIamPolicyCallable

public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.GetIamPolicyRequest,com.google.iam.v1.Policy> getIamPolicyCallable()

Gets the access control policy for a resource. Returns an empty policyif the resource exists and does not have a policy set.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   GetIamPolicyRequest request =
       GetIamPolicyRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .setOptions(GetPolicyOptions.newBuilder().build())
           .build();
   ApiFuture<Policy> future = topicAdminClient.getIamPolicyCallable().futureCall(request);
   // Do something.
   Policy response = future.get();
 }

testIamPermissions

public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions(com.google.iam.v1.TestIamPermissionsRequest request)

Returns permissions that a caller has on the specified resource. If theresource does not exist, this will return an empty set ofpermissions, not a `NOT_FOUND` error.

Note: This operation is designed to be used for buildingpermission-aware UIs and command-line tools, not for authorizationchecking. This operation may "fail open" without warning.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   TestIamPermissionsResponse response = topicAdminClient.testIamPermissions(request);
 }

Parameters:: request - The request object containing all of the parameters for the API call.
Throws:: com.google.api.gax.rpc.ApiException - if the remote call fails

testIamPermissions
```
@Deprecated
public final com.google.iam.v1.TestIamPermissionsResponse testIamPermissions(String resource,
                                                                                         List<String> permissions)
```
Deprecated. Use testIamPermissions(TestIamPermissionsRequest) instead.
Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.
Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.
Sample code:
```
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   String formattedResource = ProjectTopicName.format("[PROJECT]", "[TOPIC]");
   List<String> permissions = new ArrayList<>();
   TestIamPermissionsResponse response = topicAdminClient.testIamPermissions(formattedResource, permissions);
 }
 
```
Parameters:

resource - REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field.

permissions - The set of permissions to check for the `resource`. Permissions with wildcards (such as '*' or 'storage.*') are not allowed. For more information see [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).

Throws:

com.google.api.gax.rpc.ApiException - if the remote call fails

testIamPermissionsCallable

public final com.google.api.gax.rpc.UnaryCallable<com.google.iam.v1.TestIamPermissionsRequest,com.google.iam.v1.TestIamPermissionsResponse> testIamPermissionsCallable()

Returns permissions that a caller has on the specified resource. If theresource does not exist, this will return an empty set ofpermissions, not a `NOT_FOUND` error.

Note: This operation is designed to be used for buildingpermission-aware UIs and command-line tools, not for authorizationchecking. This operation may "fail open" without warning.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) {
   TestIamPermissionsRequest request =
       TestIamPermissionsRequest.newBuilder()
           .setResource(SchemaName.of("[PROJECT]", "[SCHEMA]").toString())
           .addAllPermissions(new ArrayList<String>())
           .build();
   ApiFuture<TestIamPermissionsResponse> future =
       topicAdminClient.testIamPermissionsCallable().futureCall(request);
   // Do something.
   TestIamPermissionsResponse response = future.get();
 }

close
```
public final void close()
```
Specified by:

close in interface AutoCloseable

shutdown
```
public void shutdown()
```
Specified by:

shutdown in interface com.google.api.gax.core.BackgroundResource

isShutdown
```
public boolean isShutdown()
```
Specified by:

isShutdown in interface com.google.api.gax.core.BackgroundResource

isTerminated
```
public boolean isTerminated()
```
Specified by:

isTerminated in interface com.google.api.gax.core.BackgroundResource

shutdownNow
```
public void shutdownNow()
```
Specified by:

shutdownNow in interface com.google.api.gax.core.BackgroundResource

awaitTermination

public boolean awaitTermination(long duration,
                                TimeUnit unit)
                         throws InterruptedException

Specified by:: awaitTermination in interface com.google.api.gax.core.BackgroundResource
Throws:: InterruptedException

Class TopicAdminClient

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

TopicAdminClient

TopicAdminClient

Method Detail

create

create

create

getSettings

getStub

createTopic

createTopic

createTopic

createTopic

createTopicCallable

updateTopic

updateTopic

updateTopicCallable

publish

publish

publish

publishCallable

getTopic

getTopic

getTopic

getTopic

getTopicCallable

listTopics

listTopics

listTopics

listTopicsPagedCallable

listTopicsCallable

listTopicSubscriptions

listTopicSubscriptions

listTopicSubscriptions

listTopicSubscriptions

listTopicSubscriptionsPagedCallable

listTopicSubscriptionsCallable

listTopicSnapshots

listTopicSnapshots

listTopicSnapshots

listTopicSnapshotsPagedCallable

listTopicSnapshotsCallable

deleteTopic

deleteTopic

deleteTopic

deleteTopic

deleteTopicCallable

detachSubscription

detachSubscriptionCallable

setIamPolicy

setIamPolicy

setIamPolicyCallable

getIamPolicy

getIamPolicy

getIamPolicyCallable

testIamPermissions

testIamPermissions

testIamPermissionsCallable

close

shutdown

isShutdown

isTerminated

shutdownNow

awaitTermination