v1 使用「僅傳送一次」建立訂閱項目 (已淘汰)

(已淘汰) 建立僅傳送一次的訂閱項目

程式碼範例

Go

在試用這個範例之前，請先按照Go「Pub/Sub 快速入門導覽課程：使用用戶端程式庫」中的操作說明進行設定。 詳情請參閱 Pub/Sub Go API 參考說明文件。

如要驗證 Pub/Sub，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

import (
	"context"
	"fmt"
	"io"

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

func createSubscriptionWithExactlyOnceDelivery(w io.Writer, projectID, subID string, topic *pubsub.Topic) error {
	// projectID := "my-project-id"
	// subID := "my-sub"
	// topic of type https://godoc.org/cloud.google.com/go/pubsub#Topic
	ctx := context.Background()
	client, err := pubsub.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("pubsub.NewClient: %w", err)
	}
	defer client.Close()

	sub, err := client.CreateSubscription(ctx, subID, pubsub.SubscriptionConfig{
		Topic:                     topic,
		EnableExactlyOnceDelivery: true,
	})
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Created a subscription with exactly once delivery enabled: %v\n", sub)
	return nil
}

Ruby

在試用這個範例之前，請先按照Ruby「Pub/Sub 快速入門導覽課程：使用用戶端程式庫」中的操作說明進行設定。 詳情請參閱 Pub/Sub Ruby API 參考說明文件。

如要驗證 Pub/Sub，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

require "google/cloud/pubsub"

# Shows how to create a new subscription with exactly once delivery enabled
class PubsubCreateSubscriptionWithExactlyOnceDelivery
  def create_subscription_with_exactly_once_delivery project_id:, topic_id:, subscription_id:
    pubsub = Google::Cloud::Pubsub.new project_id: project_id
    topic = pubsub.topic topic_id
    subscription = topic.subscribe subscription_id, enable_exactly_once_delivery: true
    puts "Created subscription with exactly once delivery enabled: #{subscription_id}"
  end

  def self.run
    # TODO(developer): Replace these variables before running the sample.
    project_id = "your-project-id"
    topic_id = "your-topic-id"
    subscription_id = "id-for-new-subcription"
    pubsub_old_version_create_subscription_with_exactly_once_delivery = PubsubCreateSubscriptionWithExactlyOnceDelivery.new
    pubsub_old_version_create_subscription_with_exactly_once_delivery.create_subscription_with_exactly_once_delivery(
      project_id: project_id,
      topic_id: topic_id,
      subscription_id: subscription_id
    )
  end
end

if $PROGRAM_NAME == __FILE__
  PubsubCreateSubscriptionWithExactlyOnceDelivery.run
end

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽器。