Delete subscriptions

You can delete Pub/Sub subscriptions with the Google Cloud console, Google Cloud CLI, client library, or Pub/Sub API.

This document discusses how to delete subscriptions in Pub/Sub.

Before you begin

Required roles and permissions

To get the permissions that you need to delete subscriptions and manage them, ask your administrator to grant you the Pub/Sub Editor (roles/pubsub.editor) IAM role on your topic or project. For more information about granting roles, see Manage access to projects, folders, and organizations.

This predefined role contains the permissions required to delete subscriptions and manage them. To see the exact permissions that are required, expand the Required permissions section:

Required permissions

The following permissions are required to delete subscriptions and manage them:

  • Pull from a subscription: pubsub.subscriptions.consume
  • Create a subscription: pubsub.subscriptions.create
  • Delete a subscription: pubsub.subscriptions.delete
  • Get a subscription: pubsub.subscriptions.get
  • List a subscription: pubsub.subscriptions.list
  • Update a subscription: pubsub.subscriptions.update
  • Attach a subscription to a topic: pubsub.topics.attachSubscription
  • Get the IAM policy for a subscription: pubsub.subscriptions.getIamPolicy
  • Configure the IAM policy for a subscription: pubsub.subscriptions.setIamPolicy

You might also be able to get these permissions with custom roles or other predefined roles.

You can configure access control at the project level and at the individual resource level. You can create a subscription in one project and attach it to a topic located in a different project. Ensure that you have the required permissions for each project.

Delete subscriptions

If you try to create a subscription with the same name as the one that you just deleted, expect an error for a brief period.

Console

  1. In the Google Cloud console, go to the Subscriptions page.

    Go to Subscriptions

  2. Select the subscription to delete.
  3. Click Delete.

gcloud

  1. In the Google Cloud console, activate Cloud Shell.

    Activate Cloud Shell

    At the bottom of the Google Cloud console, a Cloud Shell session starts and displays a command-line prompt. Cloud Shell is a shell environment with the Google Cloud CLI already installed and with values already set for your current project. It can take a few seconds for the session to initialize.

  2. To delete a subscription, run the gcloud pubsub subscriptions delete command:

    gcloud pubsub subscriptions delete SUBSCRIPTION_ID

REST

To delete a subscription, use the projects.subscriptions.delete method:

Request:

The request must be authenticated with an access token in the Authorization header. To obtain an access token for the current Application Default Credentials: gcloud auth application-default print-access-token.

DELETE https://pubsub.googleapis.com/v1/projects/PROJECT_ID/subscriptions/SUBSCRIPTION_ID
Authorization: Bearer ACCESS_TOKEN

Where:

  • PROJECT_ID is your project ID.
  • SUBSCRIPTION_ID is your subscription ID.

    • Response:

    If the request is successful, the response is an empty JSON object.

    Delete is an eventually consistent operation, so it might take time for other processes to see its effect.

    C++

    Before trying this sample, follow the C++ setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub C++ API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    namespace pubsub_admin = ::google::cloud::pubsub_admin;
namespace pubsub = ::google::cloud::pubsub;
[](pubsub_admin::SubscriptionAdminClient client,
   std::string const& project_id, std::string const& subscription_id) {
  auto status = client.DeleteSubscription(
      pubsub::Subscription(project_id, subscription_id).FullName());
  // Note that kNotFound is a possible result when the library retries.
  if (status.code() == google::cloud::StatusCode::kNotFound) {
    std::cout << "The subscription was not found\n";
    return;
  }
  if (!status.ok()) throw std::runtime_error(status.message());

  std::cout << "The subscription was successfully deleted\n";

    C#

    Before trying this sample, follow the C# setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub C# API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    
using Google.Cloud.PubSub.V1;

public class DeleteSubscriptionSample
{
    public void DeleteSubscription(string projectId, string subscriptionId)
    {
        SubscriberServiceApiClient subscriber = SubscriberServiceApiClient.Create();
        SubscriptionName subscriptionName = SubscriptionName.FromProjectSubscription(projectId, subscriptionId);
        subscriber.DeleteSubscription(subscriptionName);
    }
}

    Go

    Before trying this sample, follow the Go setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Go API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    import (
	"context"
	"fmt"
	"io"

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

func delete(w io.Writer, projectID, subID string) error {
	// projectID := "my-project-id"
	// subID := "my-sub"
	ctx := context.Background()
	client, err := pubsub.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("pubsub.NewClient: %w", err)
	}
	defer client.Close()

	sub := client.Subscription(subID)
	if err := sub.Delete(ctx); err != nil {
		return fmt.Errorf("Delete: %w", err)
	}
	fmt.Fprintf(w, "Subscription %q deleted.", subID)
	return nil
}

    Java

    Before trying this sample, follow the Java setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Java API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    
import com.google.api.gax.rpc.NotFoundException;
import com.google.cloud.pubsub.v1.SubscriptionAdminClient;
import com.google.pubsub.v1.SubscriptionName;
import java.io.IOException;

public class DeleteSubscriptionExample {

  public static void main(String... args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String subscriptionId = "your-subscription-id";

    deleteSubscriptionExample(projectId, subscriptionId);
  }

  public static void deleteSubscriptionExample(String projectId, String subscriptionId)
      throws IOException {
    try (SubscriptionAdminClient subscriptionAdminClient = SubscriptionAdminClient.create()) {
      SubscriptionName subscriptionName = SubscriptionName.of(projectId, subscriptionId);
      try {
        subscriptionAdminClient.deleteSubscription(subscriptionName);
        System.out.println("Deleted subscription.");
      } catch (NotFoundException e) {
        System.out.println(e.getMessage());
      }
    }
  }
}

    Node.js

    /**
 * TODO(developer): Uncomment this variable before running the sample.
 */
// const subscriptionNameOrId = 'YOUR_SUBSCRIPTION_NAME_OR_ID';

// Imports the Google Cloud client library
const {PubSub} = require('@google-cloud/pubsub');

// Creates a client; cache this for further use
const pubSubClient = new PubSub();

async function deleteSubscription(subscriptionNameOrId) {
  // Deletes the subscription
  await pubSubClient.subscription(subscriptionNameOrId).delete();
  console.log(`Subscription ${subscriptionNameOrId} deleted.`);
}

    Node.js

    /**
 * TODO(developer): Uncomment this variable before running the sample.
 */
// const subscriptionNameOrId = 'YOUR_SUBSCRIPTION_NAME_OR_ID';

// Imports the Google Cloud client library
import {PubSub} from '@google-cloud/pubsub';

// Creates a client; cache this for further use
const pubSubClient = new PubSub();

async function deleteSubscription(subscriptionNameOrId: string) {
  // Deletes the subscription
  await pubSubClient.subscription(subscriptionNameOrId).delete();
  console.log(`Subscription ${subscriptionNameOrId} deleted.`);
}

    PHP

    Before trying this sample, follow the PHP setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub PHP API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    use Google\Cloud\PubSub\PubSubClient;

/**
 * Creates a Pub/Sub subscription.
 *
 * @param string $projectId  The Google project ID.
 * @param string $subscriptionName  The Pub/Sub subscription name.
 */
function delete_subscription($projectId, $subscriptionName)
{
    $pubsub = new PubSubClient([
        'projectId' => $projectId,
    ]);
    $subscription = $pubsub->subscription($subscriptionName);
    $subscription->delete();

    printf('Subscription deleted: %s' . PHP_EOL, $subscription->name());
}

    Python

    Before trying this sample, follow the Python setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Python API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    from google.cloud import pubsub_v1

# TODO(developer)
# project_id = "your-project-id"
# subscription_id = "your-subscription-id"

subscriber = pubsub_v1.SubscriberClient()
subscription_path = subscriber.subscription_path(project_id, subscription_id)

# Wrap the subscriber in a 'with' block to automatically call close() to
# close the underlying gRPC channel when done.
with subscriber:
    subscriber.delete_subscription(request={"subscription": subscription_path})

print(f"Subscription deleted: {subscription_path}.")

    Ruby

    Before trying this sample, follow the Ruby setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Ruby API reference documentation.

    To authenticate to Pub/Sub, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

    # subscription_id = "your-subscription-id"

pubsub = Google::Cloud::Pubsub.new

subscription = pubsub.subscription subscription_id
subscription.delete

puts "Subscription #{subscription_id} deleted."

    What's next