Using Requester Pays

Go to concepts

This page describes how to set up the Requester Pays feature and gives an example of making a request on a bucket that has enabled the Requester Pays feature.

Setting up Requester Pays

The following sections show how to turn Requester Pays on and off, as well as how to check to see if Requester Pays is enabled on a bucket.

Prerequisites

1. You should have the storage.buckets.get permission, which allows you to get the requester pays status for a bucket and is also required for enabling and disabling Requester Pays with the Google Cloud Console or gsutil.

2. When enabling or disabling Requester Pays, you must have the storage.buckets.update permission.

3. When disabling Requester Pays, you must either include a billing project in your request or else have the resourcemanager.projects.createBillingAssignment permission. See Requester Pays Use and access requirements for more information.

Permissions are given to users through roles. For example, users granted the Storage Admin role have all of the above storage.buckets permissions. Roles can be added to the project that contains the bucket.

Setting Requester Pays

To enable or disable Requester Pays on a bucket:

Console

1. In the Google Cloud Console, go to the Cloud Storage Browser page.
   

   Go to Browser

2. In the list of buckets, find the bucket you want to set and locate the Requester pays column.

   The value in the column indicates the current state of Requester Pays for that bucket.

3. Click on the current state of Requester Pays for the desired bucket.

4. In the window that appears, click Turn on or Turn off, depending on the state you want to set for Requester Pays.

When enabled, a green bubble and On appear in the Requester pays column for the bucket. When disabled, a gray bubble and Off appear in the column.

To learn how to get detailed error information about failed operations in the Cloud Storage browser, see Troubleshooting.

gsutil

Use the gsutil requesterpays set command:

gsutil requesterpays set STATE gs://BUCKET_NAME

Where:

• STATE is either on to enable Requester Pays or off to disable Requester Pays.

• BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

Code samples

C++

For more information, see the Cloud Storage C++ API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

namespace gcs = ::google::cloud::storage;
using ::google::cloud::StatusOr;
[](gcs::Client client, std::string const& bucket_name) {
  StatusOr<gcs::BucketMetadata> metadata = client.PatchBucket(
      bucket_name,
      gcs::BucketMetadataPatchBuilder().SetBilling(gcs::BucketBilling{true}));
  if (!metadata) throw std::runtime_error(metadata.status().message());

  std::cout << "Billing configuration for bucket " << metadata->name()
            << " is updated. The bucket now";
  if (!metadata->has_billing()) {
    std::cout << " has no billing configuration.\n";
  } else if (metadata->billing().requester_pays) {
    std::cout << " is configured to charge the caller for requests\n";
  } else {
    std::cout << " is configured to charge the project that owns the bucket"
              << " for requests.\n";
  }
}

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

namespace gcs = ::google::cloud::storage;
using ::google::cloud::StatusOr;
[](gcs::Client client, std::string const& bucket_name,
   std::string const& billed_project) {
  StatusOr<gcs::BucketMetadata> metadata = client.PatchBucket(
      bucket_name,
      gcs::BucketMetadataPatchBuilder().SetBilling(gcs::BucketBilling{false}),
      gcs::UserProject(billed_project));
  if (!metadata) throw std::runtime_error(metadata.status().message());

  std::cout << "Billing configuration for bucket " << bucket_name
            << " is updated. The bucket now";
  if (!metadata->has_billing()) {
    std::cout << " has no billing configuration.\n";
  } else if (metadata->billing().requester_pays) {
    std::cout << " is configured to charge the caller for requests\n";
  } else {
    std::cout << " is configured to charge the project that owns the bucket"
              << " for requests.\n";
  }
}

C#

For more information, see the Cloud Storage C# API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

using Google.Apis.Storage.v1.Data;
using Google.Cloud.Storage.V1;
using System;

public class EnableRequesterPaysSample
{
    public Bucket EnableRequesterPays(string bucketName = "your-unique-bucket-name")
    {
        var storage = StorageClient.Create();
        var bucket = storage.GetBucket(bucketName);
        bucket.Billing ??= new Bucket.BillingData();
        bucket.Billing.RequesterPays = true;
        bucket = storage.UpdateBucket(bucket);
        Console.WriteLine($"Requester pays requests have been enabled for bucket {bucketName}.");
        return bucket;
    }
}

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

using Google.Apis.Storage.v1.Data;
using Google.Cloud.Storage.V1;
using System;

public class DisableRequesterPaysSample
{
    public Bucket DisableRequesterPays(
        string projectId = "your-project-id",
        string bucketName = "your-unique-bucket-name")
    {
        var storage = StorageClient.Create();
        var bucket = storage.GetBucket(bucketName, new GetBucketOptions
        {
            UserProject = projectId
        });

        bucket.Billing ??= new Bucket.BillingData();
        bucket.Billing.RequesterPays = false;

        bucket = storage.UpdateBucket(bucket, new UpdateBucketOptions
        {
            UserProject = projectId
        });
        Console.WriteLine($"Requester pays disabled for bucket {bucketName}.");
        return bucket;
    }
}

Go

For more information, see the Cloud Storage Go API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"
	"time"

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

// enableRequesterPays sets requester pays flag to true.
func enableRequesterPays(w io.Writer, bucketName string) error {
	// bucketName := "bucket-name"
	ctx := context.Background()
	client, err := storage.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()

	bucket := client.Bucket(bucketName)
	bucketAttrsToUpdate := storage.BucketAttrsToUpdate{
		RequesterPays: true,
	}
	if _, err := bucket.Update(ctx, bucketAttrsToUpdate); err != nil {
		return fmt.Errorf("Bucket(%q).Update: %v", bucketName, err)
	}
	fmt.Fprintf(w, "Requester pays enabled for bucket %v\n", bucketName)
	return nil
}

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"
	"time"

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

// disableRequesterPays sets requester pays flag to false.
func disableRequesterPays(w io.Writer, bucketName string) error {
	// bucketName := "bucket-name"
	ctx := context.Background()
	client, err := storage.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()

	bucket := client.Bucket(bucketName)
	bucketAttrsToUpdate := storage.BucketAttrsToUpdate{
		RequesterPays: false,
	}
	if _, err := bucket.Update(ctx, bucketAttrsToUpdate); err != nil {
		return fmt.Errorf("Bucket(%q).Update: %v", bucketName, err)
	}
	fmt.Fprintf(w, "Requester pays disabled for bucket %v\n", bucketName)
	return nil
}

Java

For more information, see the Cloud Storage Java API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

import com.google.cloud.storage.Bucket;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;

public class EnableRequesterPays {
  public static void enableRequesterPays(String projectId, String bucketName) {
    // The ID of your GCP project
    // String projectId = "your-project-id";

    // The ID of your GCS bucket
    // String bucketName = "your-unique-bucket-name";

    Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
    Bucket bucket = storage.get(bucketName);
    bucket.toBuilder().setRequesterPays(true).build().update();

    System.out.println("Requester pays enabled for bucket " + bucketName);
  }
}

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

import com.google.cloud.storage.Bucket;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;

public class DisableRequesterPays {
  public static void disableRequesterPays(String projectId, String bucketName) {
    // The ID of your GCP project
    // String projectId = "your-project-id";

    // The ID of your GCS bucket
    // String bucketName = "your-unique-bucket-name";

    Storage storage = StorageOptions.newBuilder().setProjectId(projectId).build().getService();
    Bucket bucket = storage.get(bucketName);
    bucket.toBuilder().setRequesterPays(false).build().update();

    System.out.println("Requester pays disabled for bucket " + bucketName);
  }
}

Node.js

For more information, see the Cloud Storage Node.js API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';

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

// Creates a client
const storage = new Storage();

async function enableRequesterPays() {
  await storage.bucket(bucketName).enableRequesterPays();

  console.log(
    `Requester-pays requests have been enabled for bucket ${bucketName}`
  );
}

enableRequesterPays().catch(console.error);

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';

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

// Creates a client
const storage = new Storage();

async function disableRequesterPays() {
  // Disables requester-pays requests
  await storage.bucket(bucketName).disableRequesterPays();

  console.log(
    `Requester-pays requests have been disabled for bucket ${bucketName}`
  );
}

disableRequesterPays().catch(console.error);

PHP

For more information, see the Cloud Storage PHP API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

use Google\Cloud\Storage\StorageClient;

/**
 * Enable a bucket's requesterpays metadata.
 *
 * @param string $bucketName The name of your Cloud Storage bucket.
 */
function enable_requester_pays($bucketName)
{
    // $bucketName = 'my-bucket';

    $storage = new StorageClient();
    $bucket = $storage->bucket($bucketName);
    $bucket->update([
        'billing' => [
            'requesterPays' => true
        ]
    ]);
    printf('Requester pays has been enabled for %s' . PHP_EOL, $bucketName);
}

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

use Google\Cloud\Storage\StorageClient;

/**
 * Disable a bucket's requesterpays metadata.
 *
 * @param string $bucketName The name of your Cloud Storage bucket.
 */
function disable_requester_pays($bucketName)
{
    // $bucketName = 'my-bucket';

    $storage = new StorageClient();
    $bucket = $storage->bucket($bucketName);
    $bucket->update([
        'billing' => [
            'requesterPays' => false
        ]
    ]);
    printf('Requester pays has been disabled for %s' . PHP_EOL, $bucketName);
}

Python

For more information, see the Cloud Storage Python API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

from google.cloud import storage


def enable_requester_pays(bucket_name):
    """Enable a bucket's requesterpays metadata"""
    # bucket_name = "my-bucket"

    storage_client = storage.Client()

    bucket = storage_client.get_bucket(bucket_name)
    bucket.requester_pays = True
    bucket.patch()

    print("Requester Pays has been enabled for {}".format(bucket_name))

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

from google.cloud import storage


def disable_requester_pays(bucket_name):
    """Disable a bucket's requesterpays metadata"""
    # bucket_name = "my-bucket"

    storage_client = storage.Client()

    bucket = storage_client.get_bucket(bucket_name)
    bucket.requester_pays = False
    bucket.patch()

    print("Requester Pays has been disabled for {}".format(bucket_name))

Ruby

For more information, see the Cloud Storage Ruby API reference documentation.

The following sample enables Requester Pays on a bucket:

View on GitHub Feedback

def enable_requester_pays bucket_name:
  # The ID of your GCS bucket
  # bucket_name = "your-unique-bucket-name"

  require "google/cloud/storage"

  storage = Google::Cloud::Storage.new
  bucket  = storage.bucket bucket_name

  bucket.requester_pays = true

  puts "Requester pays has been enabled for #{bucket_name}"
end

The following sample disables Requester Pays on a bucket:

View on GitHub Feedback

def disable_requester_pays bucket_name:
  # The ID of your GCS bucket
  # bucket_name = "your-unique-bucket-name"

  require "google/cloud/storage"

  storage = Google::Cloud::Storage.new
  bucket  = storage.bucket bucket_name

  bucket.requester_pays = false

  puts "Requester pays has been disabled for #{bucket_name}"
end

REST APIs

JSON API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. Create a .json file that contains the following information:

   {
     "billing": {
       "requesterPays": STATE
     }
   }

   Where STATE is either true or false.

3. Use cURL to call the JSON API with a PATCH Bucket request:

   curl -X PATCH --data-binary @JSON_FILE_NAME.json \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     -H "Content-Type: application/json" \
     "https://storage.googleapis.com/storage/v1/b/BUCKET_NAME?fields=billing"

   Where:

   • JSON_FILE_NAME is the name of the file you created in Step 2.
   • OAUTH2_TOKEN is the name of the access token you generated in Step 1.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

XML API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. Create an .xml file that contains the following information:

   <BillingConfiguration>
     <RequesterPays>STATE</RequesterPays>
   </BillingConfiguration>

   Where STATE is either Enabled or Disabled.

3. Use cURL to call the XML API with a PUT Bucket request and requesterpays query string parameter:

   curl -X PUT --data-binary @XML_FILE_NAME.xml \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     "https://storage.googleapis.com/BUCKET_NAME?billing"

   Where:

   • XML_FILE_NAME is the name of the file you created in Step 2.
   • OAUTH2_TOKEN is the name of the access token you generated in Step 1.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

Checking whether Requester Pays is enabled

To check whether Requester Pays is enabled on a bucket:

Console

1. In the Google Cloud Console, go to the Cloud Storage Browser page.
   

   Go to Browser

2. In the list of buckets, the Requester Pays status of each bucket is found in the Requester Pays column.

If enabled, the status is green and the word On appears.

gsutil

Use the gsutil requesterpays get command:

gsutil requesterpays get gs://BUCKET_NAME

Where BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

The response looks like the following if Requester Pays is enabled:

gs://my-bucket: Enabled

Code samples

C++

For more information, see the Cloud Storage C++ API reference documentation.

View on GitHub Feedback

namespace gcs = ::google::cloud::storage;
using ::google::cloud::StatusOr;
[](gcs::Client client, std::string const& bucket_name,
   std::string const& user_project) {
  StatusOr<gcs::BucketMetadata> metadata =
      client.GetBucketMetadata(bucket_name, gcs::UserProject(user_project));
  if (!metadata) throw std::runtime_error(metadata.status().message());

  if (!metadata->has_billing()) {
    std::cout
        << "The bucket " << metadata->name() << " does not have a"
        << " billing configuration. The default applies, i.e., the project"
        << " that owns the bucket pays for the requests.\n";
    return;
  }

  if (metadata->billing().requester_pays) {
    std::cout
        << "The bucket " << metadata->name()
        << " is configured to charge the calling project for the requests.\n";
  } else {
    std::cout << "The bucket " << metadata->name()
              << " is configured to charge the project that owns the bucket "
                 "for the requests.\n";
  }
}

C#

For more information, see the Cloud Storage C# API reference documentation.

View on GitHub Feedback

using Google.Cloud.Storage.V1;
using System;

public class GetRequesterPaysStatusSample
{
    public bool GetRequesterPaysStatus(
        string projectId = "your-project-id",
        string bucketName = "your-unique-bucket-name")
    {
        var storage = StorageClient.Create();
        var bucket = storage.GetBucket(bucketName, new GetBucketOptions
        {
            UserProject = projectId
        });
        bool requesterPays = bucket.Billing?.RequesterPays ?? false;
        Console.WriteLine($"RequesterPays: {requesterPays}");
        return requesterPays;
    }
}

Go

For more information, see the Cloud Storage Go API reference documentation.

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"
	"time"

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

// getRequesterPaysStatus gets requester pays status.
func getRequesterPaysStatus(w io.Writer, bucketName string) error {
	// bucketName := "bucket-name"
	ctx := context.Background()
	client, err := storage.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()

	attrs, err := client.Bucket(bucketName).Attrs(ctx)
	if err != nil {
		return fmt.Errorf("Bucket(%q).Attrs: %v", bucketName, err)
	}
	fmt.Fprintf(w, "Is requester pays enabled? %v\n", attrs.RequesterPays)
	return nil
}

Java

For more information, see the Cloud Storage Java API reference documentation.

View on GitHub Feedback

// Instantiate a Google Cloud Storage client
Storage storage = StorageOptions.getDefaultInstance().getService();

// The name of the bucket to retrieve requester-pays status, eg. "my-bucket"
// String bucketName = "my-bucket"
// Retrieve the bucket, throws StorageException on failure
Bucket bucket = storage.get(bucketName, Storage.BucketGetOption.fields(BucketField.BILLING));

System.out.println("Requester pays status : " + bucket.requesterPays());

Node.js

For more information, see the Cloud Storage Node.js API reference documentation.

View on GitHub Feedback

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';

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

// Creates a client
const storage = new Storage();

async function getRequesterPaysStatus() {
  // Gets the requester-pays status of a bucket
  const [metadata] = await storage.bucket(bucketName).getMetadata();

  let status;
  if (metadata && metadata.billing && metadata.billing.requesterPays) {
    status = 'enabled';
  } else {
    status = 'disabled';
  }
  console.log(
    `Requester-pays requests are ${status} for bucket ${bucketName}.`
  );
}

getRequesterPaysStatus().catch(console.error);

PHP

For more information, see the Cloud Storage PHP API reference documentation.

View on GitHub Feedback

use Google\Cloud\Storage\StorageClient;

/**
 * Get a bucket's requesterpays metadata.
 *
 * @param string $bucketName The name of your Cloud Storage bucket.
 */
function get_requester_pays_status($bucketName)
{
    // $bucketName = 'my-bucket';

    $storage = new StorageClient();
    $bucket = $storage->bucket($bucketName);
    $bucketInformation = $bucket->info();
    $requesterPaysStatus = $bucketInformation['billing']['requesterPays'];
    if ($requesterPaysStatus) {
        printf('Requester Pays is enabled for %s' . PHP_EOL, $bucketName);
    } else {
        printf('Requester Pays is disabled for %s' . PHP_EOL, $bucketName);
    }
}

Python

For more information, see the Cloud Storage Python API reference documentation.

View on GitHub Feedback

from google.cloud import storage


def get_requester_pays_status(bucket_name):
    """Get a bucket's requester pays metadata"""
    # bucket_name = "my-bucket"
    storage_client = storage.Client()

    bucket = storage_client.get_bucket(bucket_name)
    requester_pays_status = bucket.requester_pays

    if requester_pays_status:
        print("Requester Pays is enabled for {}".format(bucket_name))
    else:
        print("Requester Pays is disabled for {}".format(bucket_name))

REST APIs

JSON API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. Use cURL to call the JSON API with a GET Bucket request:

   curl -X GET \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     "https://storage.googleapis.com/storage/v1/b/BUCKET_NAME?fields=billing"

   Where:

   • OAUTH2_TOKEN is the name of the access token you generated in Step 1.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

XML API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. Use cURL to call the XML API with a GET Bucket request and billing query string parameter:

   curl -X GET \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     "https://storage.googleapis.com/BUCKET_NAME?billing"

   Where:

   • OAUTH2_TOKEN is the name of the access token you generated in Step 1.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.

Accessing Requester Pays buckets

The following example shows how to include a billing project so that you can download an object stored in a Requester Pays bucket. Use a similar procedure to perform other requests on the Requester Pays bucket or on objects within it. See Requester Pays access requirements for prerequisite considerations.

Important: Buckets that have Requester Pays disabled still accept requests that include a billing project, and charges are applied to the billing project supplied in the request. Consider any billing implications prior to including a billing project in all of your requests.

Console

Note: If you previously used the Console to access a given Requester Pays bucket, you have immediate access to the bucket and can download the object as you normally would. The project you previously specified as the billing project is used for this subsequent access. You can change the project you bill by clicking the Change project button located above the list of objects in the bucket.

1. In the Google Cloud Console, go to the Cloud Storage Browser page.
   

   Go to Browser

2. In the list of buckets, click on the name of the bucket that contains the object you want to download.

3. In the window that appears, use the dropdown menu to select a project for billing.

4. Check the checkbox to confirm you are authorized to use the selected project for billing purposes.

5. Click Save.

6. Download the object as you normally would.

To learn how to get detailed error information about failed operations in the Cloud Storage browser, see Troubleshooting.

gsutil

Use the -u flag in your request:

gsutil -u PROJECT_IDENTIFIER cp gs://BUCKET_NAME/OBJECT_NAME OBJECT_DESTINATION

Where:

• PROJECT_IDENTIFIER is the ID or number of the project to be billed. For example, my-project.
• BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.
• OBJECT_NAME is the name of the object you want to download. For example, pets/dog.png.
• OBJECT_DESTINATION is the location where you want to save your object. For example, Desktop/dog.png.

Code samples

C++

For more information, see the Cloud Storage C++ API reference documentation.

View on GitHub Feedback

namespace gcs = ::google::cloud::storage;
[](gcs::Client client, std::string const& bucket_name,
   std::string const& object_name, std::string const& billed_project) {
  gcs::ObjectReadStream stream = client.ReadObject(
      bucket_name, object_name, gcs::UserProject(billed_project));

  std::string line;
  while (std::getline(stream, line, '\n')) {
    std::cout << line << "\n";
  }
}

C#

For more information, see the Cloud Storage C# API reference documentation.

View on GitHub Feedback

using Google.Cloud.Storage.V1;
using System;
using System.IO;

public class DownloadFileRequesterPaysSample
{
    public void DownloadFileRequesterPays(
        string projectId = "your-project-id",
        string bucketName = "your-unique-bucket-name",
        string objectName = "my-file-name",
        string localPath = "my-local-path/my-file-name")
    {
        var storage = StorageClient.Create();
        using var outputFile = File.OpenWrite(localPath);
        storage.DownloadObject(bucketName, objectName, outputFile, new DownloadObjectOptions
        {
            UserProject = projectId
        });
        Console.WriteLine($"Downloaded {objectName} to {localPath} paid by {projectId}.");
    }
}

Go

For more information, see the Cloud Storage Go API reference documentation.

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"
	"os"
	"time"

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

// downloadUsingRequesterPays downloads an object using billing project.
func downloadUsingRequesterPays(w io.Writer, bucket, object, billingProjectID string) error {
	// bucket := "bucket-name"
	// object := "object-name"
	// billingProjectID := "billing_account_id"
	ctx := context.Background()
	client, err := storage.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("storage.NewClient: %v", err)
	}
	defer client.Close()

	b := client.Bucket(bucket).UserProject(billingProjectID)
	src := b.Object(object)

	// Open local file.
	f, err := os.OpenFile("notes.txt", os.O_RDWR|os.O_CREATE, 0755)
	if err != nil {
		return fmt.Errorf("os.OpenFile: %v", err)
	}

	ctx, cancel := context.WithTimeout(ctx, time.Second*50)
	defer cancel()

	rc, err := src.NewReader(ctx)
	if err != nil {
		return fmt.Errorf("Object(%q).NewReader: %v", object, err)
	}
	if _, err := io.Copy(f, rc); err != nil {
		return fmt.Errorf("io.Copy: %v", err)
	}
	if err := rc.Close(); err != nil {
		return fmt.Errorf("Reader.Close: %v", err)
	}
	fmt.Fprintf(w, "Downloaded using %v as billing project.\n", billingProjectID)
	return nil
}

Java

For more information, see the Cloud Storage Java API reference documentation.

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import com.google.cloud.storage.Blob;
import com.google.cloud.storage.BlobId;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;
import java.nio.file.Path;

public class DownloadRequesterPaysObject {
  public static void downloadRequesterPaysObject(
      String projectId, String bucketName, String objectName, Path destFilePath) {
    // The project ID to bill
    // String projectId = "my-billable-project-id";

    // The ID of your GCS bucket
    // String bucketName = "your-unique-bucket-name";

    // The ID of your GCS object
    // String objectName = "your-object-name";

    // The path to which the file should be downloaded
    // Path destFilePath = Paths.get("/local/path/to/file.txt");

    Storage storage = StorageOptions.getDefaultInstance().getService();
    Blob blob = storage.get(BlobId.of(bucketName, objectName));
    blob.downloadTo(destFilePath, Blob.BlobSourceOption.userProject(projectId));

    System.out.println(
        "Object " + objectName + " downloaded to " + destFilePath + " and billed to " + projectId);
  }
}

Node.js

For more information, see the Cloud Storage Node.js API reference documentation.

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/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// The project ID to bill
// const projectId = 'my-billable-project-id';

// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';

// The ID of your GCS file
// const srcFileName = 'your-file-name';

// The path to which the file should be downloaded
// const destFileName = '/local/path/to/file.txt';

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

// Creates a client
const storage = new Storage();

async function downloadFileUsingRequesterPays() {
  const options = {
    destination: destFileName,
    userProject: projectId,
  };

  // Downloads the file
  await storage.bucket(bucketName).file(srcFileName).download(options);

  console.log(
    `gs://${bucketName}/${srcFileName} downloaded to ${destFileName} using requester-pays requests`
  );
}

downloadFileUsingRequesterPays().catch(console.error);

PHP

For more information, see the Cloud Storage PHP API reference documentation.

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use Google\Cloud\Storage\StorageClient;

/**
 * Download file using specified project as requester
 *
 * @param string $projectId The ID of your Google Cloud Platform project.
 * @param string $bucketName The name of your Cloud Storage bucket.
 * @param string $objectName The name of your Cloud Storage object.
 * @param string $destination The local destination to save the object.
 */
function download_file_requester_pays($projectId, $bucketName, $objectName, $destination)
{
    // $projectId = 'my-project-id';
    // $bucketName = 'my-bucket';
    // $objectName = 'my-object';
    // $destination = '/path/to/your/file';

    $storage = new StorageClient([
        'projectId' => $projectId
    ]);
    $userProject = true;
    $bucket = $storage->bucket($bucketName, $userProject);
    $object = $bucket->object($objectName);
    $object->downloadToFile($destination);
    printf('Downloaded gs://%s/%s to %s using requester-pays requests.' . PHP_EOL,
        $bucketName, $objectName, basename($destination));
}

Python

For more information, see the Cloud Storage Python API reference documentation.

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from google.cloud import storage


def download_file_requester_pays(
    bucket_name, project_id, source_blob_name, destination_file_name
):
    """Download file using specified project as the requester"""
    # bucket_name = "your-bucket-name"
    # project_id = "your-project-id"
    # source_blob_name = "source-blob-name"
    # destination_file_name = "local-destination-file-name"

    storage_client = storage.Client()

    bucket = storage_client.bucket(bucket_name, user_project=project_id)
    blob = bucket.blob(source_blob_name)
    blob.download_to_filename(destination_file_name)

    print(
        "Blob {} downloaded to {} using a requester-pays request.".format(
            source_blob_name, destination_file_name
        )
    )

Ruby

For more information, see the Cloud Storage Ruby API reference documentation.

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def download_file_requester_pays bucket_name:, file_name:, local_file_path:
  # The ID of a GCS bucket
  # bucket_name = "your-unique-bucket-name"

  # The ID of a GCS object
  # file_name = "your-file-name"

  # The path to which the file should be downloaded
  # local_file_path = "/local/path/to/file.txt"

  require "google/cloud/storage"

  storage = Google::Cloud::Storage.new
  bucket  = storage.bucket bucket_name, skip_lookup: true, user_project: true
  file    = bucket.file file_name

  file.download local_file_path

  puts "Downloaded #{file.name} using billing project #{storage.project}"
end

REST APIs

JSON API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. In your request, include the userProject query string parameter set to the ID of the project to be billed:

   curl -X GET \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     -o "SAVE_TO_LOCATION" \
     "https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME?alt=media&userProject=PROJECT_IDENTIFIER"

   Where:

   • OAUTH2_TOKEN is the access token you generated in Step 1.
   • SAVE_TO_LOCATION is the location where you want to save your object. For example, Desktop/dog.png.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.
   • OBJECT_NAME is the name of the object you want to download. For example, pets/dog.png.
   • PROJECT_IDENTIFIER is the ID or number of the project to be billed. For example, my-project.

XML API

1. Get an authorization access token from the OAuth 2.0 Playground. Configure the playground to use your own OAuth credentials.

2. In your request, include the x-goog-user-project header set to the ID of the project to be billed:

   curl -X GET \
     -H "Authorization: Bearer OAUTH2_TOKEN" \
     -H "x-goog-user-project: PROJECT_ID" \
     -o "SAVE_TO_LOCATION" \
     "https://storage.googleapis.com/BUCKET_NAME/OBJECT_NAME"

   Where:

   • OAUTH2_TOKEN is the access token you generated in Step 1.
   • PROJECT_ID is the ID of the project to be billed. For example, my-project.
   • SAVE_TO_LOCATION is the location where you want to save your object. For example, Desktop/dog.png.
   • BUCKET_NAME is the name of the relevant bucket. For example, my-bucket.
   • OBJECT_NAME is the name of the object you want to download. For example, pets/dog.png.

What's next

• Learn more about Requester Pays.
• Make data publicly available.