빠른 시작: Cloud Console을 사용하여 Pub/Sub 라이트 주제 만들기

Cloud Console을 사용하여 Pub/Sub 라이트 주제 만들기

이 페이지에서는 다음을 수행하는 방법을 보여줍니다.

Google Cloud Console을 사용하여 라이트 예약, 라이트 주제, 라이트 구독을 만듭니다.
Go, 자바, Python용 Pub/Sub 라이트 클라이언트 라이브러리를 사용하여 메시지를 주고받습니다.

시작하기 전에

Google Cloud 계정에 로그인합니다. Google Cloud를 처음 사용하는 경우 계정을 만들고 Google 제품의 실제 성능을 평가해 보세요. 신규 고객에게는 워크로드를 실행, 테스트, 배포하는 데 사용할 수 있는 $300의 무료 크레딧이 제공됩니다.

In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

Go to project selector

Google Cloud 프로젝트에 결제가 사용 설정되어 있는지 확인합니다.

Enable the Pub/Sub Lite API.

Enable the API

Create a service account:

In the Google Cloud console, go to the Create service account page.
Go to Create service account
Select your project.
In the Service account name field, enter a name. The Google Cloud console fills in the Service account ID field based on this name.

In the Service account description field, enter a description. For example, Service account for quickstart.
Click Create and continue.
Grant the Project > Owner role to the service account.

To grant the role, find the Select a role list, then select Project > Owner.

Note: The Role field affects which resources the service account can access in your project. You can revoke these roles or grant additional roles later. In production environments, do not grant the Owner, Editor, or Viewer roles. Instead, grant a predefined role or custom role that meets your needs.
Click Continue.
Click Done to finish creating the service account.

Do not close your browser window. You will use it in the next step.

Create a service account key:

In the Google Cloud console, click the email address for the service account that you created.
Click Keys.
Click Add key, and then click Create new key.
Click Create. A JSON key file is downloaded to your computer.
Click Close.

GOOGLE_APPLICATION_CREDENTIALS 환경 변수를 사용자 인증 정보가 포함된 JSON 파일의 경로로 설정합니다. 이 변수는 현재 셸 세션에만 적용되므로 새 세션을 열면 변수를 다시 설정합니다.

예: Linux 또는 macOS

export GOOGLE_APPLICATION_CREDENTIALS="KEY_PATH"

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

예를 들면 다음과 같습니다.

export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/service-account-file.json"

예: Windows

PowerShell:

$env:GOOGLE_APPLICATION_CREDENTIALS="KEY_PATH"

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

예를 들면 다음과 같습니다.

$env:GOOGLE_APPLICATION_CREDENTIALS="C:\Users\username\Downloads\service-account-file.json"

명령 프롬프트:

set GOOGLE_APPLICATION_CREDENTIALS=KEY_PATH

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

Go to project selector

Google Cloud 프로젝트에 결제가 사용 설정되어 있는지 확인합니다.

Enable the Pub/Sub Lite API.

Enable the API

Create a service account:

In the Google Cloud console, go to the Create service account page.
Go to Create service account
Select your project.
In the Service account name field, enter a name. The Google Cloud console fills in the Service account ID field based on this name.

In the Service account description field, enter a description. For example, Service account for quickstart.
Click Create and continue.
Grant the Project > Owner role to the service account.

To grant the role, find the Select a role list, then select Project > Owner.

Note: The Role field affects which resources the service account can access in your project. You can revoke these roles or grant additional roles later. In production environments, do not grant the Owner, Editor, or Viewer roles. Instead, grant a predefined role or custom role that meets your needs.
Click Continue.
Click Done to finish creating the service account.

Do not close your browser window. You will use it in the next step.

Create a service account key:

In the Google Cloud console, click the email address for the service account that you created.
Click Keys.
Click Add key, and then click Create new key.
Click Create. A JSON key file is downloaded to your computer.
Click Close.

예: Linux 또는 macOS

export GOOGLE_APPLICATION_CREDENTIALS="KEY_PATH"

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

예를 들면 다음과 같습니다.

export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/service-account-file.json"

예: Windows

PowerShell:

$env:GOOGLE_APPLICATION_CREDENTIALS="KEY_PATH"

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

예를 들면 다음과 같습니다.

$env:GOOGLE_APPLICATION_CREDENTIALS="C:\Users\username\Downloads\service-account-file.json"

명령 프롬프트:

set GOOGLE_APPLICATION_CREDENTIALS=KEY_PATH

KEY_PATH를 사용자 인증 정보가 포함된 JSON 파일의 경로로 바꿉니다.

클라이언트 라이브러리 설치

Go

go get cloud.google.com/go/pubsublite

자바

If you are using Maven, add the following to your pom.xml file. For more information about BOMs, see The Google Cloud Platform Libraries BOM.

<dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-pubsublite</artifactId>
  <version>1.13.8</version>
</dependency>
<dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-pubsub</artifactId>
  <version>1.132.0</version>
</dependency>

If you are using Gradle, add the following to your dependencies:

implementation 'com.google.cloud:google-cloud-pubsublite:1.14.0'

If you are using sbt, add the following to your dependencies:

libraryDependencies += "com.google.cloud" % "google-cloud-pubsublite" % "1.14.0"

If you're using Visual Studio Code, IntelliJ, or Eclipse, you can add client libraries to your project using the following IDE plugins:

The plugins provide additional functionality, such as key management for service accounts. Refer to each plugin's documentation for details.

Python

pip install --upgrade google-cloud-pubsublite

라이트 예약 만들기

Cloud Console을 사용하여 라이트 예약을 만들려면 다음 단계를 따르세요.

Cloud Console에서 라이트 예약 페이지로 이동합니다.

라이트 예약 페이지로 이동
라이트 예약 만들기를 클릭합니다.
리전을 선택하세요.
이름 섹션에서 라이트 주제 ID로 your-lite-reservation을 입력합니다.
만들기를 클릭합니다.

라이트 주제 만들기

Cloud Console을 사용하여 라이트 주제를 만들려면 다음 단계를 따르세요.

Cloud Console에서 라이트 주제 페이지로 이동합니다.

라이트 주제 페이지로 이동
라이트 주제 만들기를 클릭합니다.
리전과 리전의 영역을 선택합니다.
이름 섹션에서 라이트 주제 ID로 your-lite-topic를 입력합니다.
만들기를 클릭합니다.

라이트 구독 만들기

Cloud Console을 사용하여 라이트 구독을 만들려면 다음 단계를 따르세요.

Cloud Console에서 라이트 구독 페이지로 이동합니다.

라이트 구독 페이지로 이동
라이트 구독 만들기를 클릭합니다.
라이트 구독 ID 필드에 your-lite-subscription을 입력합니다.
메시지를 수신할 라이트 주제를 선택합니다.
전송 요구사항 섹션에서 저장 후 메시지 전송을 선택합니다.
만들기를 클릭합니다.

라이트 구독은 라이트 주제와 동일한 영역에 있습니다.

메시지 전송

다음 게시자 애플리케이션을 사용하여 라이트 주제로 메시지를 전송합니다.

Go

GitHub에서 보기 의견 보내기


package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"sync"

	"cloud.google.com/go/pubsub"
	"cloud.google.com/go/pubsublite/pscompat"
	"golang.org/x/sync/errgroup"
)

func main() {
	// NOTE: Set these flags for an existing Pub/Sub Lite topic when running this
	// sample.
	projectID := flag.String("project_id", "", "Cloud Project ID")
	zone := flag.String("zone", "", "Cloud Zone where the topic resides, e.g. us-central1-a")
	topicID := flag.String("topic_id", "", "Existing Pub/Sub Lite topic")
	messageCount := flag.Int("message_count", 100, "The number of messages to send")
	flag.Parse()

	ctx := context.Background()
	topicPath := fmt.Sprintf("projects/%s/locations/%s/topics/%s", *projectID, *zone, *topicID)

	// Create the publisher client.
	publisher, err := pscompat.NewPublisherClient(ctx, topicPath)
	if err != nil {
		log.Fatalf("pscompat.NewPublisherClient error: %v", err)
	}

	// Ensure the publisher will be shut down.
	defer publisher.Stop()

	// Collect any messages that need to be republished with a new publisher
	// client.
	var toRepublish []*pubsub.Message
	var toRepublishMu sync.Mutex

	// Publish messages. Messages are automatically batched.
	g := new(errgroup.Group)
	for i := 0; i < *messageCount; i++ {
		msg := &pubsub.Message{
			Data: []byte(fmt.Sprintf("message-%d", i)),
		}
		result := publisher.Publish(ctx, msg)

		g.Go(func() error {
			// Get blocks until the result is ready.
			id, err := result.Get(ctx)
			if err != nil {
				// NOTE: A failed PublishResult indicates that the publisher client
				// encountered a fatal error and has permanently terminated. After the
				// fatal error has been resolved, a new publisher client instance must
				// be created to republish failed messages.
				fmt.Printf("Publish error: %v\n", err)
				toRepublishMu.Lock()
				toRepublish = append(toRepublish, msg)
				toRepublishMu.Unlock()
				return err
			}

			// Metadata decoded from the id contains the partition and offset.
			metadata, err := pscompat.ParseMessageMetadata(id)
			if err != nil {
				fmt.Printf("Failed to parse message metadata %q: %v\n", id, err)
				return err
			}
			fmt.Printf("Published: partition=%d, offset=%d\n", metadata.Partition, metadata.Offset)
			return nil
		})
	}
	if err := g.Wait(); err != nil {
		fmt.Printf("Publishing finished with error: %v\n", err)
	}
	fmt.Printf("Published %d messages\n", *messageCount-len(toRepublish))

	// Print the error that caused the publisher client to terminate (if any),
	// which may contain more context than PublishResults.
	if err := publisher.Error(); err != nil {
		fmt.Printf("Publisher client terminated due to error: %v\n", publisher.Error())
	}
}

자바

GitHub에서 보기 의견 보내기

import com.google.api.core.ApiFuture;
import com.google.api.core.ApiFutures;
import com.google.api.gax.rpc.ApiException;
import com.google.cloud.pubsublite.CloudRegion;
import com.google.cloud.pubsublite.CloudRegionOrZone;
import com.google.cloud.pubsublite.CloudZone;
import com.google.cloud.pubsublite.MessageMetadata;
import com.google.cloud.pubsublite.ProjectNumber;
import com.google.cloud.pubsublite.TopicName;
import com.google.cloud.pubsublite.TopicPath;
import com.google.cloud.pubsublite.cloudpubsub.Publisher;
import com.google.cloud.pubsublite.cloudpubsub.PublisherSettings;
import com.google.protobuf.ByteString;
import com.google.pubsub.v1.PubsubMessage;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;

public class PublisherExample {

  public static void main(String... args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String cloudRegion = "your-cloud-region";
    char zoneId = 'b';
    // Choose an existing topic for the publish example to work.
    String topicId = "your-topic-id";
    long projectNumber = Long.parseLong("123456789");
    int messageCount = 100;
    // True if using a regional location. False if using a zonal location.
    // https://cloud.google.com/pubsub/lite/docs/topics
    boolean regional = false;

    publisherExample(cloudRegion, zoneId, projectNumber, topicId, messageCount, regional);
  }

  // Publish messages to a topic.
  public static void publisherExample(
      String cloudRegion,
      char zoneId,
      long projectNumber,
      String topicId,
      int messageCount,
      boolean regional)
      throws ApiException, ExecutionException, InterruptedException {

    CloudRegionOrZone location;
    if (regional) {
      location = CloudRegionOrZone.of(CloudRegion.of(cloudRegion));
    } else {
      location = CloudRegionOrZone.of(CloudZone.of(CloudRegion.of(cloudRegion), zoneId));
    }

    TopicPath topicPath =
        TopicPath.newBuilder()
            .setProject(ProjectNumber.of(projectNumber))
            .setLocation(location)
            .setName(TopicName.of(topicId))
            .build();

    Publisher publisher = null;
    List<ApiFuture<String>> futures = new ArrayList<>();

    try {
      PublisherSettings publisherSettings =
          PublisherSettings.newBuilder().setTopicPath(topicPath).build();

      publisher = Publisher.create(publisherSettings);

      // Start the publisher. Upon successful starting, its state will become RUNNING.
      publisher.startAsync().awaitRunning();

      for (int i = 0; i < messageCount; i++) {
        String message = "message-" + i;

        // Convert the message to a byte string.
        ByteString data = ByteString.copyFromUtf8(message);
        PubsubMessage pubsubMessage = PubsubMessage.newBuilder().setData(data).build();

        // Publish a message. Messages are automatically batched.
        ApiFuture<String> future = publisher.publish(pubsubMessage);
        futures.add(future);
      }
    } finally {
      ArrayList<MessageMetadata> metadata = new ArrayList<>();
      List<String> ackIds = ApiFutures.allAsList(futures).get();
      for (String id : ackIds) {
        // Decoded metadata contains partition and offset.
        metadata.add(MessageMetadata.decode(id));
      }
      System.out.println(metadata + "\nPublished " + ackIds.size() + " messages.");

      if (publisher != null) {
        // Shut down the publisher.
        publisher.stopAsync().awaitTerminated();
        System.out.println("Publisher is shut down.");
      }
    }
  }
}

Python

GitHub에서 보기 의견 보내기

from google.cloud.pubsublite.cloudpubsub import PublisherClient
from google.cloud.pubsublite.types import (
    CloudRegion,
    CloudZone,
    MessageMetadata,
    TopicPath,
)

# TODO(developer):
# project_number = 1122334455
# cloud_region = "us-central1"
# zone_id = "a"
# topic_id = "your-topic-id"
# regional = True

if regional:
    location = CloudRegion(cloud_region)
else:
    location = CloudZone(CloudRegion(cloud_region), zone_id)

topic_path = TopicPath(project_number, location, topic_id)

# PublisherClient() must be used in a `with` block or have __enter__() called before use.
with PublisherClient() as publisher_client:
    data = "Hello world!"
    api_future = publisher_client.publish(topic_path, data.encode("utf-8"))
    # result() blocks. To resolve API futures asynchronously, use add_done_callback().
    message_id = api_future.result()
    message_metadata = MessageMetadata.decode(message_id)
    print(
        f"Published a message to {topic_path} with partition {message_metadata.partition.value} and offset {message_metadata.cursor.offset}."
    )

게시자가 100개의 메시지를 라이트 주제로 전송하고 Pub/Sub 라이트 서비스가 수신하는 메시지 수를 출력합니다.

메시지 수신

다음 구독자 애플리케이션을 사용하여 라이트 구독에서 메시지를 수신합니다.

Go

GitHub에서 보기 의견 보내기


package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"sync/atomic"
	"time"

	"cloud.google.com/go/pubsub"
	"cloud.google.com/go/pubsublite/pscompat"
)

func main() {
	// NOTE: Set these flags for an existing Pub/Sub Lite subscription containing
	// published messages when running this sample.
	projectID := flag.String("project_id", "", "Cloud Project ID")
	zone := flag.String("zone", "", "Cloud Zone where the topic resides, e.g. us-central1-a")
	subscriptionID := flag.String("subscription_id", "", "Existing Pub/Sub Lite subscription")
	timeout := flag.Duration("timeout", 90*time.Second, "The duration to receive messages")
	flag.Parse()

	ctx := context.Background()
	subscriptionPath := fmt.Sprintf("projects/%s/locations/%s/subscriptions/%s", *projectID, *zone, *subscriptionID)

	// Configure flow control settings. These settings apply per partition.
	// The message stream is paused based on the maximum size or number of
	// messages that the subscriber has already received, whichever condition is
	// met first.
	settings := pscompat.ReceiveSettings{
		// 10 MiB. Must be greater than the allowed size of the largest message
		// (1 MiB).
		MaxOutstandingBytes: 10 * 1024 * 1024,
		// 1,000 outstanding messages. Must be > 0.
		MaxOutstandingMessages: 1000,
	}

	// Create the subscriber client.
	subscriber, err := pscompat.NewSubscriberClientWithSettings(ctx, subscriptionPath, settings)
	if err != nil {
		log.Fatalf("pscompat.NewSubscriberClientWithSettings error: %v", err)
	}

	// Listen for messages until the timeout expires.
	log.Printf("Listening to messages on %s for %v...\n", subscriptionPath, *timeout)
	cctx, cancel := context.WithTimeout(ctx, *timeout)
	defer cancel()
	var receiveCount int32

	// Receive blocks until the context is cancelled or an error occurs.
	if err := subscriber.Receive(cctx, func(ctx context.Context, msg *pubsub.Message) {
		// NOTE: May be called concurrently; synchronize access to shared memory.
		atomic.AddInt32(&receiveCount, 1)

		// Metadata decoded from the message ID contains the partition and offset.
		metadata, err := pscompat.ParseMessageMetadata(msg.ID)
		if err != nil {
			log.Fatalf("Failed to parse %q: %v", msg.ID, err)
		}

		fmt.Printf("Received (partition=%d, offset=%d): %s\n", metadata.Partition, metadata.Offset, string(msg.Data))
		msg.Ack()
	}); err != nil {
		log.Fatalf("SubscriberClient.Receive error: %v", err)
	}

	fmt.Printf("Received %d messages\n", receiveCount)
}

자바

GitHub에서 보기 의견 보내기

import com.google.api.gax.rpc.ApiException;
import com.google.cloud.pubsub.v1.AckReplyConsumer;
import com.google.cloud.pubsub.v1.MessageReceiver;
import com.google.cloud.pubsublite.CloudRegion;
import com.google.cloud.pubsublite.CloudRegionOrZone;
import com.google.cloud.pubsublite.CloudZone;
import com.google.cloud.pubsublite.MessageMetadata;
import com.google.cloud.pubsublite.ProjectNumber;
import com.google.cloud.pubsublite.SubscriptionName;
import com.google.cloud.pubsublite.SubscriptionPath;
import com.google.cloud.pubsublite.cloudpubsub.FlowControlSettings;
import com.google.cloud.pubsublite.cloudpubsub.MessageTransforms;
import com.google.cloud.pubsublite.cloudpubsub.Subscriber;
import com.google.cloud.pubsublite.cloudpubsub.SubscriberSettings;
import com.google.protobuf.Timestamp;
import com.google.pubsub.v1.PubsubMessage;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class SubscriberExample {

  public static void main(String... args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String cloudRegion = "your-cloud-region";
    char zoneId = 'b';
    // Choose an existing subscription for the subscribe example to work.
    String subscriptionId = "your-subscription-id";
    long projectNumber = Long.parseLong("123456789");
    // True if using a regional location. False if using a zonal location.
    // https://cloud.google.com/pubsub/lite/docs/topics
    boolean regional = false;

    subscriberExample(cloudRegion, zoneId, projectNumber, subscriptionId, regional);
  }

  public static void subscriberExample(
      String cloudRegion, char zoneId, long projectNumber, String subscriptionId, boolean regional)
      throws ApiException {

    CloudRegionOrZone location;
    if (regional) {
      location = CloudRegionOrZone.of(CloudRegion.of(cloudRegion));
    } else {
      location = CloudRegionOrZone.of(CloudZone.of(CloudRegion.of(cloudRegion), zoneId));
    }

    SubscriptionPath subscriptionPath =
        SubscriptionPath.newBuilder()
            .setLocation(location)
            .setProject(ProjectNumber.of(projectNumber))
            .setName(SubscriptionName.of(subscriptionId))
            .build();

    // The message stream is paused based on the maximum size or number of messages that the
    // subscriber has already received, whichever condition is met first.
    FlowControlSettings flowControlSettings =
        FlowControlSettings.builder()
            // 10 MiB. Must be greater than the allowed size of the largest message (1 MiB).
            .setBytesOutstanding(10 * 1024 * 1024L)
            // 1,000 outstanding messages. Must be >0.
            .setMessagesOutstanding(1000L)
            .build();

    MessageReceiver receiver =
        (PubsubMessage message, AckReplyConsumer consumer) -> {
          System.out.println("Id : " + MessageMetadata.decode(message.getMessageId()));
          System.out.println("Data : " + message.getData().toStringUtf8());
          System.out.println("Ordering key : " + message.getOrderingKey());
          System.out.println("Attributes : ");
          message
              .getAttributesMap()
              .forEach(
                  (key, value) -> {
                    if (key == MessageTransforms.PUBSUB_LITE_EVENT_TIME_TIMESTAMP_PROTO) {
                      Timestamp ts = MessageTransforms.decodeAttributeEventTime(value);
                      System.out.println(key + " = " + ts.toString());
                    } else {
                      System.out.println(key + " = " + value);
                    }
                  });

          // Acknowledge the message.
          consumer.ack();
        };

    SubscriberSettings subscriberSettings =
        SubscriberSettings.newBuilder()
            .setSubscriptionPath(subscriptionPath)
            .setReceiver(receiver)
            // Flow control settings are set at the partition level.
            .setPerPartitionFlowControlSettings(flowControlSettings)
            .build();

    Subscriber subscriber = Subscriber.create(subscriberSettings);

    // Start the subscriber. Upon successful starting, its state will become RUNNING.
    subscriber.startAsync().awaitRunning();

    System.out.println("Listening to messages on " + subscriptionPath.toString() + "...");

    try {
      System.out.println(subscriber.state());
      // Wait 90 seconds for the subscriber to reach TERMINATED state. If it encounters
      // unrecoverable errors before then, its state will change to FAILED and an
      // IllegalStateException will be thrown.
      subscriber.awaitTerminated(90, TimeUnit.SECONDS);
    } catch (TimeoutException t) {
      // Shut down the subscriber. This will change the state of the subscriber to TERMINATED.
      subscriber.stopAsync().awaitTerminated();
      System.out.println("Subscriber is shut down: " + subscriber.state());
    }
  }
}

Python

GitHub에서 보기 의견 보내기

from concurrent.futures._base import TimeoutError
from google.pubsub_v1 import PubsubMessage
from google.cloud.pubsublite.cloudpubsub import SubscriberClient
from google.cloud.pubsublite.types import (
    CloudRegion,
    CloudZone,
    FlowControlSettings,
    MessageMetadata,
    SubscriptionPath,
)

# TODO(developer):
# project_number = 1122334455
# cloud_region = "us-central1"
# zone_id = "a"
# subscription_id = "your-subscription-id"
# timeout = 90
# regional = True

if regional:
    location = CloudRegion(cloud_region)
else:
    location = CloudZone(CloudRegion(cloud_region), zone_id)

subscription_path = SubscriptionPath(project_number, location, subscription_id)
# Configure when to pause the message stream for more incoming messages based on the
# maximum size or number of messages that a single-partition subscriber has received,
# whichever condition is met first.
per_partition_flow_control_settings = FlowControlSettings(
    # 1,000 outstanding messages. Must be >0.
    messages_outstanding=1000,
    # 10 MiB. Must be greater than the allowed size of the largest message (1 MiB).
    bytes_outstanding=10 * 1024 * 1024,
)

def callback(message: PubsubMessage):
    message_data = message.data.decode("utf-8")
    metadata = MessageMetadata.decode(message.message_id)
    print(
        f"Received {message_data} of ordering key {message.ordering_key} with id {metadata}."
    )
    message.ack()

# SubscriberClient() must be used in a `with` block or have __enter__() called before use.
with SubscriberClient() as subscriber_client:

    streaming_pull_future = subscriber_client.subscribe(
        subscription_path,
        callback=callback,
        per_partition_flow_control_settings=per_partition_flow_control_settings,
    )

    print(f"Listening for messages on {str(subscription_path)}...")

    try:
        streaming_pull_future.result(timeout=timeout)
    except TimeoutError or KeyboardInterrupt:
        streaming_pull_future.cancel()
        assert streaming_pull_future.done()

구독자가 메시지를 수신하면 구독자는 메시지 ID와 메시지 데이터를 출력합니다.

삭제

이 페이지에서 사용한 리소스 비용이 Google Cloud 계정에 청구되지 않도록 하려면 다음 단계를 수행합니다.

Cloud Console에서 라이트 주제 페이지로 이동합니다.

라이트 주제 페이지로 이동
your-lite-topic을 클릭합니다.
주제 세부정보 페이지에서 삭제를 클릭합니다.
표시되는 필드에 delete를 입력하여 라이트 주제를 삭제할지 여부를 확인합니다.
삭제를 클릭합니다.

다음 단계

라이트 주제 및 라이트 구독 자세히 알아보기
메시지 전송 및 수신 자세히 알아보기
클라이언트 라이브러리의 코드 샘플 자세히 살피기