List archived generations

List archived generations for an object in a Cloud Storage bucket.

Documentation pages that include this code sample

To view the code sample used in context, see the following documentation:

Code sample


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

namespace gcs = google::cloud::storage;
[](gcs::Client client, std::string const& bucket_name) {
  for (auto&& object_metadata :
       client.ListObjects(bucket_name, gcs::Versions{true})) {
    if (!object_metadata) {
      throw std::runtime_error(object_metadata.status().message());

    std::cout << "bucket_name=" << object_metadata->bucket()
              << ", object_name=" << object_metadata->name()
              << ", generation=" << object_metadata->generation() << "\n";


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

import (


// listFilesAllVersion lists both live and noncurrent versions of objects within specified bucket.
func listFilesAllVersion(w io.Writer, bucket string) error {
	// bucket := "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()

	it := client.Bucket(bucket).Objects(ctx, &storage.Query{
		// Versions true to output all generations of objects
		Versions: true,
	for {
		attrs, err := it.Next()
		if err == iterator.Done {
		if err != nil {
			return fmt.Errorf("Bucket(%q).Objects(): %v", bucket, err)
		fmt.Fprintln(w, attrs.Name, attrs.Generation, attrs.Metageneration)
	return nil


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


public class ListObjectsWithOldVersions {
  public static void listObjectsWithOldVersions(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);
    Page<Blob> blobs = bucket.list(Storage.BlobListOption.versions(true));

    for (Blob blob : blobs.iterateAll()) {
      System.out.println(blob.getName() + "," + blob.getGeneration());


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

 * 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 listFilesWithOldVersions() {
  const [files] = await storage.bucket(bucketName).getFiles({
    versions: true,

  files.forEach(file => {
    console.log(, file.generation);



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

from import storage

def list_file_archived_generations(bucket_name):
    """Lists all the blobs in the bucket with generation."""
    # bucket_name = "your-bucket-name"

    storage_client = storage.Client()

    blobs = storage_client.list_blobs(bucket_name, versions=True)

    for blob in blobs:
        print("{},{}".format(, blob.generation))


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

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

  require "google/cloud/storage"

  storage =
  bucket = storage.bucket bucket_name

  bucket.files.each do |file|
    puts "#{},#{file.generation}"

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