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Java idiomatic client for Google Cloud Pub/Sub.
The newest version!
/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.cloud.pubsub.spi.v1;
import com.google.api.gax.core.PageAccessor;
import com.google.api.gax.grpc.ApiCallable;
import com.google.api.gax.protobuf.PathTemplate;
import com.google.protobuf.ByteString;
import com.google.protobuf.Empty;
import com.google.pubsub.v1.DeleteTopicRequest;
import com.google.pubsub.v1.GetTopicRequest;
import com.google.pubsub.v1.ListTopicSubscriptionsRequest;
import com.google.pubsub.v1.ListTopicSubscriptionsResponse;
import com.google.pubsub.v1.ListTopicsRequest;
import com.google.pubsub.v1.ListTopicsResponse;
import com.google.pubsub.v1.PublishRequest;
import com.google.pubsub.v1.PublishResponse;
import com.google.pubsub.v1.PubsubMessage;
import com.google.pubsub.v1.Topic;
import io.grpc.ManagedChannel;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ScheduledExecutorService;
// AUTO-GENERATED DOCUMENTATION AND SERVICE
/**
* 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:
*
*
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedName = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* Topic response = publisherApi.createTopic(formattedName);
* }
*
*
*
* Note: close() needs to be called on the publisherApi 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
* ApiCallable 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 PublisherSettings to
* create(). For example:
*
*
*
* PublisherSettings publisherSettings = PublisherSettings.defaultBuilder()
* .provideChannelWith(myCredentials)
* .build();
* PublisherApi publisherApi = PublisherApi.create(publisherSettings);
*
*
*/
@javax.annotation.Generated("by GAPIC")
public class PublisherApi implements AutoCloseable {
private final PublisherSettings settings;
private final ManagedChannel channel;
private final ScheduledExecutorService executor;
private final List closeables = new ArrayList<>();
private final ApiCallable createTopicCallable;
private final ApiCallable publishCallable;
private final ApiCallable getTopicCallable;
private final ApiCallable listTopicsCallable;
private final ApiCallable> listTopicsPagedCallable;
private final ApiCallable
listTopicSubscriptionsCallable;
private final ApiCallable>
listTopicSubscriptionsPagedCallable;
private final ApiCallable deleteTopicCallable;
public final PublisherSettings getSettings() {
return settings;
}
private static final PathTemplate PROJECT_PATH_TEMPLATE =
PathTemplate.createWithoutUrlEncoding("projects/{project}");
private static final PathTemplate TOPIC_PATH_TEMPLATE =
PathTemplate.createWithoutUrlEncoding("projects/{project}/topics/{topic}");
/**
* Formats a string containing the fully-qualified path to represent
* a project resource.
*/
public static final String formatProjectName(String project) {
return PROJECT_PATH_TEMPLATE.instantiate("project", project);
}
/**
* Formats a string containing the fully-qualified path to represent
* a topic resource.
*/
public static final String formatTopicName(String project, String topic) {
return TOPIC_PATH_TEMPLATE.instantiate(
"project", project,
"topic", topic);
}
/**
* Parses the project from the given fully-qualified path which
* represents a project resource.
*/
public static final String parseProjectFromProjectName(String projectName) {
return PROJECT_PATH_TEMPLATE.parse(projectName).get("project");
}
/**
* Parses the project from the given fully-qualified path which
* represents a topic resource.
*/
public static final String parseProjectFromTopicName(String topicName) {
return TOPIC_PATH_TEMPLATE.parse(topicName).get("project");
}
/**
* Parses the topic from the given fully-qualified path which
* represents a topic resource.
*/
public static final String parseTopicFromTopicName(String topicName) {
return TOPIC_PATH_TEMPLATE.parse(topicName).get("topic");
}
/**
* Constructs an instance of PublisherApi with default settings.
*/
public static final PublisherApi create() throws IOException {
return create(PublisherSettings.defaultBuilder().build());
}
/**
* Constructs an instance of PublisherApi, using the given settings.
* The channels are created based on the settings passed in, or defaults for any
* settings that are not set.
*/
public static final PublisherApi create(PublisherSettings settings) throws IOException {
return new PublisherApi(settings);
}
/**
* Constructs an instance of PublisherApi, using the given settings.
* This is protected so that it easy to make a subclass, but otherwise, the static
* factory methods should be preferred.
*/
protected PublisherApi(PublisherSettings settings) throws IOException {
this.settings = settings;
this.executor = settings.getExecutorProvider().getOrBuildExecutor();
this.channel = settings.getChannelProvider().getOrBuildChannel(this.executor);
this.createTopicCallable =
ApiCallable.create(settings.createTopicSettings(), this.channel, this.executor);
this.publishCallable =
ApiCallable.create(settings.publishSettings(), this.channel, this.executor);
if (settings.publishSettings().getBundlerFactory() != null) {
closeables.add(settings.publishSettings().getBundlerFactory());
}
this.getTopicCallable =
ApiCallable.create(settings.getTopicSettings(), this.channel, this.executor);
this.listTopicsCallable =
ApiCallable.create(settings.listTopicsSettings(), this.channel, this.executor);
this.listTopicsPagedCallable =
ApiCallable.createPagedVariant(settings.listTopicsSettings(), this.channel, this.executor);
this.listTopicSubscriptionsCallable =
ApiCallable.create(settings.listTopicSubscriptionsSettings(), this.channel, this.executor);
this.listTopicSubscriptionsPagedCallable =
ApiCallable.createPagedVariant(
settings.listTopicSubscriptionsSettings(), this.channel, this.executor);
this.deleteTopicCallable =
ApiCallable.create(settings.deleteTopicSettings(), this.channel, this.executor);
if (settings.getChannelProvider().shouldAutoClose()) {
closeables.add(
new Closeable() {
@Override
public void close() throws IOException {
channel.shutdown();
}
});
}
if (settings.getExecutorProvider().shouldAutoClose()) {
closeables.add(
new Closeable() {
@Override
public void close() throws IOException {
executor.shutdown();
}
});
}
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Creates the given topic with the given name.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedName = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* Topic response = publisherApi.createTopic(formattedName);
* }
*
*
* @param name 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.grpc.ApiException if the remote call fails
*/
public final Topic createTopic(String name) {
TOPIC_PATH_TEMPLATE.validate(name, "createTopic");
Topic request = Topic.newBuilder().setName(name).build();
return createTopic(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Creates the given topic with the given name.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedName = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* Topic request = Topic.newBuilder()
* .setName(formattedName)
* .build();
* Topic response = publisherApi.createTopic(request);
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
private final Topic createTopic(Topic request) {
return createTopicCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Creates the given topic with the given name.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedName = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* Topic request = Topic.newBuilder()
* .setName(formattedName)
* .build();
* ListenableFuture<Topic> future = publisherApi.createTopicCallable().futureCall(request);
* // Do something
* Topic response = future.get();
* }
*
*/
public final ApiCallable createTopicCallable() {
return createTopicCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic
* does not exist. The message payload must not be empty; it must contain
* either a non-empty data field, or at least one attribute.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ByteString data = ByteString.copyFromUtf8("");
* PubsubMessage messagesElement = PubsubMessage.newBuilder()
* .setData(data)
* .build();
* List<PubsubMessage> messages = Arrays.asList(messagesElement);
* PublishResponse response = publisherApi.publish(formattedTopic, messages);
* }
*
*
* @param topic The messages in the request will be published on this topic.
* @param messages The messages to publish.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PublishResponse publish(String topic, List messages) {
TOPIC_PATH_TEMPLATE.validate(topic, "publish");
PublishRequest request =
PublishRequest.newBuilder().setTopic(topic).addAllMessages(messages).build();
return publish(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic
* does not exist. The message payload must not be empty; it must contain
* either a non-empty data field, or at least one attribute.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ByteString data = ByteString.copyFromUtf8("");
* PubsubMessage messagesElement = PubsubMessage.newBuilder()
* .setData(data)
* .build();
* List<PubsubMessage> messages = Arrays.asList(messagesElement);
* PublishRequest request = PublishRequest.newBuilder()
* .setTopic(formattedTopic)
* .addAllMessages(messages)
* .build();
* PublishResponse response = publisherApi.publish(request);
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PublishResponse publish(PublishRequest request) {
return publishCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic
* does not exist. The message payload must not be empty; it must contain
* either a non-empty data field, or at least one attribute.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ByteString data = ByteString.copyFromUtf8("");
* PubsubMessage messagesElement = PubsubMessage.newBuilder()
* .setData(data)
* .build();
* List<PubsubMessage> messages = Arrays.asList(messagesElement);
* PublishRequest request = PublishRequest.newBuilder()
* .setTopic(formattedTopic)
* .addAllMessages(messages)
* .build();
* ListenableFuture<PublishResponse> future = publisherApi.publishCallable().futureCall(request);
* // Do something
* PublishResponse response = future.get();
* }
*
*/
public final ApiCallable publishCallable() {
return publishCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Gets the configuration of a topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* Topic response = publisherApi.getTopic(formattedTopic);
* }
*
*
* @param topic The name of the topic to get.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final Topic getTopic(String topic) {
TOPIC_PATH_TEMPLATE.validate(topic, "getTopic");
GetTopicRequest request = GetTopicRequest.newBuilder().setTopic(topic).build();
return getTopic(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Gets the configuration of a topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* GetTopicRequest request = GetTopicRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* Topic response = publisherApi.getTopic(request);
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
private final Topic getTopic(GetTopicRequest request) {
return getTopicCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Gets the configuration of a topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* GetTopicRequest request = GetTopicRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* ListenableFuture<Topic> future = publisherApi.getTopicCallable().futureCall(request);
* // Do something
* Topic response = future.get();
* }
*
*/
public final ApiCallable getTopicCallable() {
return getTopicCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists matching topics.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedProject = PublisherApi.formatProjectName("[PROJECT]");
* for (Topic element : publisherApi.listTopics(formattedProject)) {
* // doThingsWith(element);
* }
* }
*
*
* @param project The name of the cloud project that topics belong to.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PageAccessor listTopics(String project) {
PROJECT_PATH_TEMPLATE.validate(project, "listTopics");
ListTopicsRequest request = ListTopicsRequest.newBuilder().setProject(project).build();
return listTopics(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists matching topics.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedProject = PublisherApi.formatProjectName("[PROJECT]");
* ListTopicsRequest request = ListTopicsRequest.newBuilder()
* .setProject(formattedProject)
* .build();
* for (Topic element : publisherApi.listTopics(request)) {
* // doThingsWith(element);
* }
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PageAccessor listTopics(ListTopicsRequest request) {
return listTopicsPagedCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists matching topics.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedProject = PublisherApi.formatProjectName("[PROJECT]");
* ListTopicsRequest request = ListTopicsRequest.newBuilder()
* .setProject(formattedProject)
* .build();
* ListenableFuture<PageAccessor<Topic>> future = publisherApi.listTopicsPagedCallable().futureCall(request);
* // Do something
* for (Topic element : future.get()) {
* // doThingsWith(element);
* }
* }
*
*/
public final ApiCallable> listTopicsPagedCallable() {
return listTopicsPagedCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists matching topics.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedProject = PublisherApi.formatProjectName("[PROJECT]");
* ListTopicsRequest request = ListTopicsRequest.newBuilder()
* .setProject(formattedProject)
* .build();
* while (true) {
* ListTopicsResponse response = publisherApi.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;
* }
* }
* }
*
*/
public final ApiCallable listTopicsCallable() {
return listTopicsCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists the name of the subscriptions for this topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* for (String element : publisherApi.listTopicSubscriptions(formattedTopic)) {
* // doThingsWith(element);
* }
* }
*
*
* @param topic The name of the topic that subscriptions are attached to.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PageAccessor listTopicSubscriptions(String topic) {
TOPIC_PATH_TEMPLATE.validate(topic, "listTopicSubscriptions");
ListTopicSubscriptionsRequest request =
ListTopicSubscriptionsRequest.newBuilder().setTopic(topic).build();
return listTopicSubscriptions(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists the name of the subscriptions for this topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ListTopicSubscriptionsRequest request = ListTopicSubscriptionsRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* for (String element : publisherApi.listTopicSubscriptions(request)) {
* // doThingsWith(element);
* }
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final PageAccessor listTopicSubscriptions(ListTopicSubscriptionsRequest request) {
return listTopicSubscriptionsPagedCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists the name of the subscriptions for this topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ListTopicSubscriptionsRequest request = ListTopicSubscriptionsRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* ListenableFuture<PageAccessor<String>> future = publisherApi.listTopicSubscriptionsPagedCallable().futureCall(request);
* // Do something
* for (String element : future.get()) {
* // doThingsWith(element);
* }
* }
*
*/
public final ApiCallable>
listTopicSubscriptionsPagedCallable() {
return listTopicSubscriptionsPagedCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* Lists the name of the subscriptions for this topic.
*
* Sample code:
*
* try (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* ListTopicSubscriptionsRequest request = ListTopicSubscriptionsRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* while (true) {
* ListTopicSubscriptionsResponse response = publisherApi.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;
* }
* }
* }
*
*/
public final ApiCallable
listTopicSubscriptionsCallable() {
return listTopicSubscriptionsCallable;
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* 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 (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* publisherApi.deleteTopic(formattedTopic);
* }
*
*
* @param topic Name of the topic to delete.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
public final void deleteTopic(String topic) {
TOPIC_PATH_TEMPLATE.validate(topic, "deleteTopic");
DeleteTopicRequest request = DeleteTopicRequest.newBuilder().setTopic(topic).build();
deleteTopic(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* 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 (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* DeleteTopicRequest request = DeleteTopicRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* publisherApi.deleteTopic(request);
* }
*
*
* @param request The request object containing all of the parameters for the API call.
* @throws com.google.api.gax.grpc.ApiException if the remote call fails
*/
private final void deleteTopic(DeleteTopicRequest request) {
deleteTopicCallable().call(request);
}
// AUTO-GENERATED DOCUMENTATION AND METHOD
/**
* 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 (PublisherApi publisherApi = PublisherApi.create()) {
* String formattedTopic = PublisherApi.formatTopicName("[PROJECT]", "[TOPIC]");
* DeleteTopicRequest request = DeleteTopicRequest.newBuilder()
* .setTopic(formattedTopic)
* .build();
* ListenableFuture<Void> future = publisherApi.deleteTopicCallable().futureCall(request);
* // Do something
* future.get();
* }
*
*/
public final ApiCallable deleteTopicCallable() {
return deleteTopicCallable;
}
/**
* Initiates an orderly shutdown in which preexisting calls continue but new calls are immediately
* cancelled.
*/
@Override
public final void close() throws Exception {
for (AutoCloseable closeable : closeables) {
closeable.close();
}
}
}
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