Protege una base de datos con claves de encriptación administradas por el cliente (CMEK)

using Google.Cloud.Spanner.Admin.Database.V1;
using Google.Cloud.Spanner.Common.V1;
using System;
using System.Threading.Tasks;

public class CreateDatabaseWithEncryptionKeyAsyncSample
{
    public async Task<Database> CreateDatabaseWithEncryptionKeyAsync(string projectId, string instanceId, string databaseId, CryptoKeyName kmsKeyName)
    {
        // Create a DatabaseAdminClient instance that can be used to execute a
        // CreateDatabaseRequest with custom encryption configuration options.
        DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.Create();
        // Define create table statement for table #1.
        var createSingersTable =
        @"CREATE TABLE Singers (
                     SingerId INT64 NOT NULL,
                     FirstName STRING(1024),
                     LastName STRING(1024),
                     ComposerInfo BYTES(MAX)
                 ) PRIMARY KEY (SingerId)";
        // Define create table statement for table #2.
        var createAlbumsTable =
        @"CREATE TABLE Albums (
                     SingerId INT64 NOT NULL,
                     AlbumId INT64 NOT NULL,
                     AlbumTitle STRING(MAX)
                 ) PRIMARY KEY (SingerId, AlbumId),
                 INTERLEAVE IN PARENT Singers ON DELETE CASCADE";

        // Create the CreateDatabase request with encryption configuration and execute it.
        var request = new CreateDatabaseRequest
        {
            ParentAsInstanceName = InstanceName.FromProjectInstance(projectId, instanceId),
            CreateStatement = $"CREATE DATABASE `{databaseId}`",
            ExtraStatements = { createSingersTable, createAlbumsTable },
            EncryptionConfig = new EncryptionConfig
            {
                KmsKeyNameAsCryptoKeyName = kmsKeyName,
            },
        };
        var operation = await databaseAdminClient.CreateDatabaseAsync(request);

        // Wait until the operation has finished.
        Console.WriteLine("Waiting for the operation to finish.");
        var completedResponse = await operation.PollUntilCompletedAsync();
        if (completedResponse.IsFaulted)
        {
            Console.WriteLine($"Error while creating database: {completedResponse.Exception}");
            throw completedResponse.Exception;
        }

        var database = completedResponse.Result;
        Console.WriteLine($"Database {database.Name} created with encryption key {database.EncryptionConfig.KmsKeyName}");

        return database;
    }
}

void CreateDatabaseWithEncryptionKey(
    google::cloud::spanner_admin::DatabaseAdminClient client,
    std::string const& project_id, std::string const& instance_id,
    std::string const& database_id,
    google::cloud::KmsKeyName const& encryption_key) {
  google::cloud::spanner::Database database(project_id, instance_id,
                                            database_id);
  google::spanner::admin::database::v1::CreateDatabaseRequest request;
  request.set_parent(database.instance().FullName());
  request.set_create_statement("CREATE DATABASE `" + database.database_id() +
                               "`");
  request.add_extra_statements(R"""(
      CREATE TABLE Singers (
          SingerId   INT64 NOT NULL,
          FirstName  STRING(1024),
          LastName   STRING(1024),
          SingerInfo BYTES(MAX),
          FullName   STRING(2049)
              AS (ARRAY_TO_STRING([FirstName, LastName], " ")) STORED
      ) PRIMARY KEY (SingerId))""");
  request.add_extra_statements(R"""(
      CREATE TABLE Albums (
          SingerId     INT64 NOT NULL,
          AlbumId      INT64 NOT NULL,
          AlbumTitle   STRING(MAX)
      ) PRIMARY KEY (SingerId, AlbumId),
          INTERLEAVE IN PARENT Singers ON DELETE CASCADE)""");
  request.mutable_encryption_config()->set_kms_key_name(
      encryption_key.FullName());
  auto db = client.CreateDatabase(request).get();
  if (!db) throw std::move(db).status();
  std::cout << "Database " << db->name() << " created";
  std::cout << " using encryption key " << encryption_key.FullName();
  std::cout << ".\n";
}

import (
	"context"
	"fmt"
	"io"
	"regexp"

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "cloud.google.com/go/spanner/admin/database/apiv1/databasepb"
)

func createDatabaseWithCustomerManagedEncryptionKey(ctx context.Context, w io.Writer, db, kmsKeyName string) error {
	// db = `projects/<project>/instances/<instance-id>/database/<database-id>`
	// kmsKeyName = `projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>`
	matches := regexp.MustCompile("^(.+)/databases/(.+)$").FindStringSubmatch(db)
	if matches == nil || len(matches) != 3 {
		return fmt.Errorf("createDatabaseWithCustomerManagedEncryptionKey: invalid database id %q", db)
	}
	instanceName := matches[1]
	databaseId := matches[2]

	adminClient, err := database.NewDatabaseAdminClient(ctx)
	if err != nil {
		return fmt.Errorf("createDatabaseWithCustomerManagedEncryptionKey.NewDatabaseAdminClient: %w", err)
	}
	defer adminClient.Close()

	// Create a database with tables using a Customer Managed Encryption Key
	req := adminpb.CreateDatabaseRequest{
		Parent:          instanceName,
		CreateStatement: "CREATE DATABASE `" + databaseId + "`",
		ExtraStatements: []string{
			`CREATE TABLE Singers (
				SingerId   INT64 NOT NULL,
				FirstName  STRING(1024),
				LastName   STRING(1024),
				SingerInfo BYTES(MAX)
			) PRIMARY KEY (SingerId)`,
			`CREATE TABLE Albums (
				SingerId     INT64 NOT NULL,
				AlbumId      INT64 NOT NULL,
				AlbumTitle   STRING(MAX)
			) PRIMARY KEY (SingerId, AlbumId),
			INTERLEAVE IN PARENT Singers ON DELETE CASCADE`,
		},
		EncryptionConfig: &adminpb.EncryptionConfig{KmsKeyName: kmsKeyName},
	}
	op, err := adminClient.CreateDatabase(ctx, &req)
	if err != nil {
		return fmt.Errorf("createDatabaseWithCustomerManagedEncryptionKey.CreateDatabase: %w", err)
	}
	dbObj, err := op.Wait(ctx)
	if err != nil {
		return fmt.Errorf("createDatabaseWithCustomerManagedEncryptionKey.Wait: %w", err)
	}
	fmt.Fprintf(w, "Created database [%s] using encryption key %q\n", dbObj.Name, dbObj.EncryptionConfig.KmsKeyName)
	return nil
}

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerExceptionFactory;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
import com.google.common.collect.ImmutableList;
import com.google.spanner.admin.database.v1.CreateDatabaseRequest;
import com.google.spanner.admin.database.v1.Database;
import com.google.spanner.admin.database.v1.EncryptionConfig;
import com.google.spanner.admin.database.v1.InstanceName;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class CreateDatabaseWithEncryptionKey {

  static void createDatabaseWithEncryptionKey() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String instanceId = "my-instance";
    String databaseId = "my-database";
    String kmsKeyName =
        "projects/" + projectId + "/locations/<location>/keyRings/<keyRing>/cryptoKeys/<keyId>";

    try (Spanner spanner =
        SpannerOptions.newBuilder().setProjectId(projectId).build().getService();
        DatabaseAdminClient adminClient = spanner.createDatabaseAdminClient()) {
      createDatabaseWithEncryptionKey(
          adminClient,
          projectId,
          instanceId,
          databaseId,
          kmsKeyName);
    }
  }

  static void createDatabaseWithEncryptionKey(DatabaseAdminClient adminClient,
      String projectId, String instanceId, String databaseId, String kmsKeyName) {
    InstanceName instanceName = InstanceName.of(projectId, instanceId);
    CreateDatabaseRequest request = CreateDatabaseRequest.newBuilder()
        .setParent(instanceName.toString())
        .setCreateStatement("CREATE DATABASE `" + databaseId + "`")
        .setEncryptionConfig(EncryptionConfig.newBuilder().setKmsKeyName(kmsKeyName).build())
        .addAllExtraStatements(
            ImmutableList.of(
                "CREATE TABLE Singers ("
                    + "  SingerId   INT64 NOT NULL,"
                    + "  FirstName  STRING(1024),"
                    + "  LastName   STRING(1024),"
                    + "  SingerInfo BYTES(MAX)"
                    + ") PRIMARY KEY (SingerId)",
                "CREATE TABLE Albums ("
                    + "  SingerId     INT64 NOT NULL,"
                    + "  AlbumId      INT64 NOT NULL,"
                    + "  AlbumTitle   STRING(MAX)"
                    + ") PRIMARY KEY (SingerId, AlbumId),"
                    + "  INTERLEAVE IN PARENT Singers ON DELETE CASCADE"
            ))
        .build();
    try {
      System.out.println("Waiting for operation to complete...");
      Database createdDatabase =
          adminClient.createDatabaseAsync(request).get(120, TimeUnit.SECONDS);

      System.out.printf(
          "Database %s created with encryption key %s%n",
          createdDatabase.getName(),
          createdDatabase.getEncryptionConfig().getKmsKeyName()
      );
    } catch (ExecutionException e) {
      // If the operation failed during execution, expose the cause.
      throw SpannerExceptionFactory.asSpannerException(e.getCause());
    } catch (InterruptedException e) {
      // Throw when a thread is waiting, sleeping, or otherwise occupied,
      // and the thread is interrupted, either before or during the activity.
      throw SpannerExceptionFactory.propagateInterrupt(e);
    } catch (TimeoutException e) {
      // If the operation timed out propagates the timeout
      throw SpannerExceptionFactory.propagateTimeout(e);
    }
  }
}

// Imports the Google Cloud client library
const {Spanner, protos} = require('@google-cloud/spanner');

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const projectId = 'my-project-id';
// const instanceId = 'my-instance';
// const databaseId = 'my-database';
// const keyName =
//   'projects/my-project-id/my-region/keyRings/my-key-ring/cryptoKeys/my-key';

// creates a client
const spanner = new Spanner({
  projectId: projectId,
});

// Gets a reference to a Cloud Spanner Database Admin Client object
const databaseAdminClient = spanner.getDatabaseAdminClient();

// Creates a database
const [operation] = await databaseAdminClient.createDatabase({
  createStatement: 'CREATE DATABASE `' + databaseId + '`',
  parent: databaseAdminClient.instancePath(projectId, instanceId),
  encryptionConfig:
    (protos.google.spanner.admin.database.v1.EncryptionConfig = {
      kmsKeyName: keyName,
    }),
});

console.log(`Waiting for operation on ${databaseId} to complete...`);
await operation.promise();

console.log(`Created database ${databaseId} on instance ${instanceId}.`);

// Get encryption key
const [metadata] = await databaseAdminClient.getDatabase({
  name: databaseAdminClient.databasePath(projectId, instanceId, databaseId),
});

console.log(
  `Database encrypted with key ${metadata.encryptionConfig.kmsKeyName}.`
);

use Google\Cloud\Spanner\Admin\Database\V1\Client\DatabaseAdminClient;
use Google\Cloud\Spanner\Admin\Database\V1\CreateDatabaseRequest;
use Google\Cloud\Spanner\Admin\Database\V1\EncryptionConfig;

/**
 * Creates an encrypted database with tables for sample data.
 * Example:
 * ```
 * create_database_with_encryption_key($projectId, $instanceId, $databaseId, $kmsKeyName);
 * ```
 *
 * @param string $projectId The Google Cloud project ID.
 * @param string $instanceId The Spanner instance ID.
 * @param string $databaseId The Spanner database ID.
 * @param string $kmsKeyName The KMS key used for encryption.
 */
function create_database_with_encryption_key(
    string $projectId,
    string $instanceId,
    string $databaseId,
    string $kmsKeyName
): void {
    $databaseAdminClient = new DatabaseAdminClient();
    $instanceName = DatabaseAdminClient::instanceName($projectId, $instanceId);

    $createDatabaseRequest = new CreateDatabaseRequest();
    $createDatabaseRequest->setParent($instanceName);
    $createDatabaseRequest->setCreateStatement(sprintf('CREATE DATABASE `%s`', $databaseId));
    $createDatabaseRequest->setExtraStatements([
        'CREATE TABLE Singers (
            SingerId     INT64 NOT NULL,
            FirstName    STRING(1024),
            LastName     STRING(1024),
            SingerInfo   BYTES(MAX)
        ) PRIMARY KEY (SingerId)',
        'CREATE TABLE Albums (
            SingerId     INT64 NOT NULL,
            AlbumId      INT64 NOT NULL,
            AlbumTitle   STRING(MAX)
        ) PRIMARY KEY (SingerId, AlbumId),
        INTERLEAVE IN PARENT Singers ON DELETE CASCADE'
    ]);

    if (!empty($kmsKeyName)) {
        $encryptionConfig = new EncryptionConfig();
        $encryptionConfig->setKmsKeyName($kmsKeyName);
        $createDatabaseRequest->setEncryptionConfig($encryptionConfig);
    }

    $operationResponse = $databaseAdminClient->createDatabase($createDatabaseRequest);
    printf('Waiting for operation to complete...' . PHP_EOL);
    $operationResponse->pollUntilComplete();

    if ($operationResponse->operationSucceeded()) {
        $database = $operationResponse->getResult();
        printf(
            'Created database %s on instance %s with encryption key %s' . PHP_EOL,
            $databaseId,
            $instanceId,
            $database->getEncryptionConfig()->getKmsKeyName()
        );
    } else {
        $error = $operationResponse->getError();
        printf('Failed to create encrypted database: %s' . PHP_EOL, $error->getMessage());
    }
}

def create_database_with_encryption_key(instance_id, database_id, kms_key_name):
    """Creates a database with tables using a Customer Managed Encryption Key (CMEK)."""
    from google.cloud.spanner_admin_database_v1 import EncryptionConfig
    from google.cloud.spanner_admin_database_v1.types import \
        spanner_database_admin

    spanner_client = spanner.Client()
    database_admin_api = spanner_client.database_admin_api

    request = spanner_database_admin.CreateDatabaseRequest(
        parent=database_admin_api.instance_path(spanner_client.project, instance_id),
        create_statement=f"CREATE DATABASE `{database_id}`",
        extra_statements=[
            """CREATE TABLE Singers (
            SingerId     INT64 NOT NULL,
            FirstName    STRING(1024),
            LastName     STRING(1024),
            SingerInfo   BYTES(MAX)
        ) PRIMARY KEY (SingerId)""",
            """CREATE TABLE Albums (
            SingerId     INT64 NOT NULL,
            AlbumId      INT64 NOT NULL,
            AlbumTitle   STRING(MAX)
        ) PRIMARY KEY (SingerId, AlbumId),
        INTERLEAVE IN PARENT Singers ON DELETE CASCADE""",
        ],
        encryption_config=EncryptionConfig(kms_key_name=kms_key_name),
    )

    operation = database_admin_api.create_database(request=request)

    print("Waiting for operation to complete...")
    database = operation.result(OPERATION_TIMEOUT_SECONDS)

    print(
        "Database {} created with encryption key {}".format(
            database.name, database.encryption_config.kms_key_name
        )
    )

# project_id  = "Your Google Cloud project ID"
# instance_id = "Your Spanner instance ID"
# database_id = "Your Spanner database ID"
# kms_key_name = "Database eencryption KMS key"

require "google/cloud/spanner"
require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin

instance_path = database_admin_client.instance_path project: project_id, instance: instance_id

db_path = database_admin_client.database_path project: project_id,
                                              instance: instance_id,
                                              database: database_id

job = database_admin_client.create_database parent: instance_path,
                                            create_statement: "CREATE DATABASE `#{database_id}`",
                                            extra_statements: [
                                              "CREATE TABLE Singers (
                                   SingerId     INT64 NOT NULL,
                                   FirstName    STRING(1024),
                                   LastName     STRING(1024),
                                   SingerInfo   BYTES(MAX)
                                 ) PRIMARY KEY (SingerId)",

                                              "CREATE TABLE Albums (
                                   SingerId     INT64 NOT NULL,
                                   AlbumId      INT64 NOT NULL,
                                   AlbumTitle   STRING(MAX)
                                 ) PRIMARY KEY (SingerId, AlbumId),
                                 INTERLEAVE IN PARENT Singers ON DELETE CASCADE"
                                            ],
                                            encryption_config: { kms_key_name: kms_key_name }

puts "Waiting for create database operation to complete"

job.wait_until_done!
database = database_admin_client.get_database name: db_path

puts "Database #{database_id} created with encryption key #{database.encryption_config.kms_key_name}"

using Google.Cloud.Spanner.Admin.Database.V1;
using Google.Cloud.Spanner.Common.V1;
using Google.Protobuf.WellKnownTypes;
using System;
using System.Threading.Tasks;

public class CreateBackupWithEncryptionKeyAsyncSample
{
    public async Task<Backup> CreateBackupWithEncryptionKeyAsync(string projectId, string instanceId, string databaseId, string backupId, CryptoKeyName kmsKeyName)
    {
        // Create a DatabaseAdminClient instance.
        DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.Create();

        // Create the CreateBackupRequest with encryption configuration.
        CreateBackupRequest request = new CreateBackupRequest
        {
            ParentAsInstanceName = InstanceName.FromProjectInstance(projectId, instanceId),
            BackupId = backupId,
            Backup = new Backup
            {
                DatabaseAsDatabaseName = DatabaseName.FromProjectInstanceDatabase(projectId, instanceId, databaseId),
                ExpireTime = DateTime.UtcNow.AddDays(14).ToTimestamp(),
            },
            EncryptionConfig = new CreateBackupEncryptionConfig
            {
                EncryptionType = CreateBackupEncryptionConfig.Types.EncryptionType.CustomerManagedEncryption,
                KmsKeyNameAsCryptoKeyName = kmsKeyName,
            },
        };
        // Execute the CreateBackup request.
        var operation = await databaseAdminClient.CreateBackupAsync(request);

        Console.WriteLine("Waiting for the operation to finish.");

        // Poll until the returned long-running operation is complete.
        var completedResponse = await operation.PollUntilCompletedAsync();
        if (completedResponse.IsFaulted)
        {
            Console.WriteLine($"Error while creating backup: {completedResponse.Exception}");
            throw completedResponse.Exception;
        }

        var backup = completedResponse.Result;
        Console.WriteLine($"Backup {backup.Name} of size {backup.SizeBytes} bytes " +
                      $"was created at {backup.CreateTime} " +
                      $"using encryption key {kmsKeyName}");
        return backup;
    }
}

void CreateBackupWithEncryptionKey(
    google::cloud::spanner_admin::DatabaseAdminClient client,
    std::string const& project_id, std::string const& instance_id,
    std::string const& database_id, std::string const& backup_id,
    google::cloud::spanner::Timestamp expire_time,
    google::cloud::spanner::Timestamp version_time,
    google::cloud::KmsKeyName const& encryption_key) {
  google::cloud::spanner::Database database(project_id, instance_id,
                                            database_id);
  google::spanner::admin::database::v1::CreateBackupRequest request;
  request.set_parent(database.instance().FullName());
  request.set_backup_id(backup_id);
  request.mutable_backup()->set_database(database.FullName());
  *request.mutable_backup()->mutable_expire_time() =
      expire_time.get<google::protobuf::Timestamp>().value();
  *request.mutable_backup()->mutable_version_time() =
      version_time.get<google::protobuf::Timestamp>().value();
  request.mutable_encryption_config()->set_encryption_type(
      google::spanner::admin::database::v1::CreateBackupEncryptionConfig::
          CUSTOMER_MANAGED_ENCRYPTION);
  request.mutable_encryption_config()->set_kms_key_name(
      encryption_key.FullName());
  auto backup = client.CreateBackup(request).get();
  if (!backup) throw std::move(backup).status();
  std::cout
      << "Backup " << backup->name() << " of " << backup->database()
      << " of size " << backup->size_bytes() << " bytes as of "
      << google::cloud::spanner::MakeTimestamp(backup->version_time()).value()
      << " was created at "
      << google::cloud::spanner::MakeTimestamp(backup->create_time()).value()
      << " using encryption key " << encryption_key.FullName() << ".\n";
}

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

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "cloud.google.com/go/spanner/admin/database/apiv1/databasepb"
	pbt "github.com/golang/protobuf/ptypes/timestamp"
)

func createBackupWithCustomerManagedEncryptionKey(ctx context.Context, w io.Writer, db, backupID, kmsKeyName string) error {
	// db = `projects/<project>/instances/<instance-id>/database/<database-id>`
	// backupID = `my-backup-id`
	// kmsKeyName = `projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>`
	matches := regexp.MustCompile("^(.+)/databases/(.+)$").FindStringSubmatch(db)
	if matches == nil || len(matches) != 3 {
		return fmt.Errorf("createBackupWithCustomerManagedEncryptionKey: invalid database id %q", db)
	}
	instanceName := matches[1]

	adminClient, err := database.NewDatabaseAdminClient(ctx)
	if err != nil {
		return fmt.Errorf("createBackupWithCustomerManagedEncryptionKey.NewDatabaseAdminClient: %w", err)
	}
	defer adminClient.Close()

	expireTime := time.Now().AddDate(0, 0, 14)
	// Create a backup for a database using a Customer Managed Encryption Key
	req := adminpb.CreateBackupRequest{
		Parent:   instanceName,
		BackupId: backupID,
		Backup: &adminpb.Backup{
			Database:   db,
			ExpireTime: &pbt.Timestamp{Seconds: expireTime.Unix(), Nanos: int32(expireTime.Nanosecond())},
		},
		EncryptionConfig: &adminpb.CreateBackupEncryptionConfig{
			KmsKeyName:     kmsKeyName,
			EncryptionType: adminpb.CreateBackupEncryptionConfig_CUSTOMER_MANAGED_ENCRYPTION,
		},
	}
	op, err := adminClient.CreateBackup(ctx, &req)
	if err != nil {
		return fmt.Errorf("createBackupWithCustomerManagedEncryptionKey.CreateBackup: %w", err)
	}
	// Wait for backup operation to complete.
	backup, err := op.Wait(ctx)
	if err != nil {
		return fmt.Errorf("createBackupWithCustomerManagedEncryptionKey.Wait: %w", err)
	}

	// Get the name, create time, backup size and encryption key from the backup.
	backupCreateTime := time.Unix(backup.CreateTime.Seconds, int64(backup.CreateTime.Nanos))
	fmt.Fprintf(w,
		"Backup %s of size %d bytes was created at %s using encryption key %s\n",
		backup.Name,
		backup.SizeBytes,
		backupCreateTime.Format(time.RFC3339),
		kmsKeyName)
	return nil
}

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerExceptionFactory;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
import com.google.protobuf.Timestamp;
import com.google.spanner.admin.database.v1.Backup;
import com.google.spanner.admin.database.v1.BackupName;
import com.google.spanner.admin.database.v1.CreateBackupEncryptionConfig;
import com.google.spanner.admin.database.v1.CreateBackupEncryptionConfig.EncryptionType;
import com.google.spanner.admin.database.v1.CreateBackupRequest;
import com.google.spanner.admin.database.v1.DatabaseName;
import com.google.spanner.admin.database.v1.InstanceName;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.threeten.bp.LocalDateTime;
import org.threeten.bp.OffsetDateTime;

public class CreateBackupWithEncryptionKey {

  static void createBackupWithEncryptionKey() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String instanceId = "my-instance";
    String databaseId = "my-database";
    String backupId = "my-backup";
    String kmsKeyName =
        "projects/" + projectId + "/locations/<location>/keyRings/<keyRing>/cryptoKeys/<keyId>";

    try (Spanner spanner =
        SpannerOptions.newBuilder().setProjectId(projectId).build().getService();
        DatabaseAdminClient adminClient = spanner.createDatabaseAdminClient()) {
      createBackupWithEncryptionKey(
          adminClient,
          projectId,
          instanceId,
          databaseId,
          backupId,
          kmsKeyName);
    }
  }

  static Void createBackupWithEncryptionKey(DatabaseAdminClient adminClient,
      String projectId, String instanceId, String databaseId, String backupId, String kmsKeyName) {
    // Set expire time to 14 days from now.
    final Timestamp expireTime =
        Timestamp.newBuilder().setSeconds(TimeUnit.MILLISECONDS.toSeconds((
            System.currentTimeMillis() + TimeUnit.DAYS.toMillis(14)))).build();
    final BackupName backupName = BackupName.of(projectId, instanceId, backupId);
    Backup backup = Backup.newBuilder()
        .setName(backupName.toString())
        .setDatabase(DatabaseName.of(projectId, instanceId, databaseId).toString())
        .setExpireTime(expireTime).build();

    final CreateBackupRequest request =
        CreateBackupRequest.newBuilder()
            .setParent(InstanceName.of(projectId, instanceId).toString())
            .setBackupId(backupId)
            .setBackup(backup)
            .setEncryptionConfig(
                CreateBackupEncryptionConfig.newBuilder()
                    .setEncryptionType(EncryptionType.CUSTOMER_MANAGED_ENCRYPTION)
                    .setKmsKeyName(kmsKeyName).build()).build();
    try {
      System.out.println("Waiting for operation to complete...");
      backup = adminClient.createBackupAsync(request).get(1200, TimeUnit.SECONDS);
    } catch (ExecutionException e) {
      // If the operation failed during execution, expose the cause.
      throw SpannerExceptionFactory.asSpannerException(e.getCause());
    } catch (InterruptedException e) {
      // Throw when a thread is waiting, sleeping, or otherwise occupied,
      // and the thread is interrupted, either before or during the activity.
      throw SpannerExceptionFactory.propagateInterrupt(e);
    } catch (TimeoutException e) {
      // If the operation timed out propagates the timeout
      throw SpannerExceptionFactory.propagateTimeout(e);
    }
    System.out.printf(
        "Backup %s of size %d bytes was created at %s using encryption key %s%n",
        backup.getName(),
        backup.getSizeBytes(),
        LocalDateTime.ofEpochSecond(
            backup.getCreateTime().getSeconds(),
            backup.getCreateTime().getNanos(),
            OffsetDateTime.now().getOffset()),
        kmsKeyName
    );

    return null;
  }
}

// Imports the Google Cloud client library
const {Spanner, protos} = require('@google-cloud/spanner');
const {PreciseDate} = require('@google-cloud/precise-date');

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const projectId = 'my-project-id';
// const instanceId = 'my-instance';
// const databaseId = 'my-database';
// const backupId = 'my-backup';
// const keyName =
//   'projects/my-project-id/my-region/keyRings/my-key-ring/cryptoKeys/my-key';

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

// Gets a reference to a Cloud Spanner Database Admin Client object
const databaseAdminClient = spanner.getDatabaseAdminClient();

// Creates a new backup of the database
try {
  console.log(
    `Creating backup of database ${databaseAdminClient.databasePath(
      projectId,
      instanceId,
      databaseId
    )}.`
  );

  // Expire backup 14 days in the future
  const expireTime = Date.now() + 1000 * 60 * 60 * 24 * 14;

  // Create a backup of the state of the database at the current time.
  const [operation] = await databaseAdminClient.createBackup({
    parent: databaseAdminClient.instancePath(projectId, instanceId),
    backupId: backupId,
    backup: (protos.google.spanner.admin.database.v1.Backup = {
      database: databaseAdminClient.databasePath(
        projectId,
        instanceId,
        databaseId
      ),
      expireTime: Spanner.timestamp(expireTime).toStruct(),
      name: databaseAdminClient.backupPath(projectId, instanceId, backupId),
    }),
    encryptionConfig: {
      encryptionType: 'CUSTOMER_MANAGED_ENCRYPTION',
      kmsKeyName: keyName,
    },
  });

  console.log(
    `Waiting for backup ${databaseAdminClient.backupPath(
      projectId,
      instanceId,
      backupId
    )} to complete...`
  );
  await operation.promise();

  // Verify backup is ready
  const [backupInfo] = await databaseAdminClient.getBackup({
    name: databaseAdminClient.backupPath(projectId, instanceId, backupId),
  });
  if (backupInfo.state === 'READY') {
    console.log(
      `Backup ${backupInfo.name} of size ` +
        `${backupInfo.sizeBytes} bytes was created at ` +
        `${new PreciseDate(backupInfo.createTime).toISOString()} ` +
        `using encryption key ${backupInfo.encryptionInfo.kmsKeyVersion}`
    );
  } else {
    console.error('ERROR: Backup is not ready.');
  }
} catch (err) {
  console.error('ERROR:', err);
} finally {
  // Close the spanner client when finished.
  // The databaseAdminClient does not require explicit closure. The closure of the Spanner client will automatically close the databaseAdminClient.
  spanner.close();
}

use Google\Cloud\Spanner\Admin\Database\V1\Backup;
use \Google\Cloud\Spanner\Admin\Database\V1\Backup\State;
use Google\Cloud\Spanner\Admin\Database\V1\Client\DatabaseAdminClient;
use Google\Cloud\Spanner\Admin\Database\V1\CreateBackupEncryptionConfig;
use Google\Cloud\Spanner\Admin\Database\V1\CreateBackupRequest;
use Google\Cloud\Spanner\Admin\Database\V1\GetBackupRequest;
use Google\Protobuf\Timestamp;

/**
 * Create an encrypted backup.
 * Example:
 * ```
 * create_backup_with_encryption_key($projectId, $instanceId, $databaseId, $backupId, $kmsKeyName);
 * ```
 *
 * @param string $projectId The Google Cloud project ID.
 * @param string $instanceId The Spanner instance ID.
 * @param string $databaseId The Spanner database ID.
 * @param string $backupId The Spanner backup ID.
 * @param string $kmsKeyName The KMS key used for encryption.
 */
function create_backup_with_encryption_key(
    string $projectId,
    string $instanceId,
    string $databaseId,
    string $backupId,
    string $kmsKeyName
): void {
    $databaseAdminClient = new DatabaseAdminClient();
    $instanceFullName = DatabaseAdminClient::instanceName($projectId, $instanceId);
    $databaseFullName = DatabaseAdminClient::databaseName($projectId, $instanceId, $databaseId);
    $expireTime = new Timestamp();
    $expireTime->setSeconds((new \DateTime('+14 days'))->getTimestamp());
    $request = new CreateBackupRequest([
        'parent' => $instanceFullName,
        'backup_id' => $backupId,
        'encryption_config' => new CreateBackupEncryptionConfig([
            'kms_key_name' => $kmsKeyName,
            'encryption_type' => CreateBackupEncryptionConfig\EncryptionType::CUSTOMER_MANAGED_ENCRYPTION
        ]),
        'backup' => new Backup([
            'database' => $databaseFullName,
            'expire_time' => $expireTime
        ])
    ]);

    $operation = $databaseAdminClient->createBackup($request);

    print('Waiting for operation to complete...' . PHP_EOL);
    $operation->pollUntilComplete();

    $request = new GetBackupRequest();
    $request->setName($databaseAdminClient->backupName($projectId, $instanceId, $backupId));
    $info = $databaseAdminClient->getBackup($request);
    if (State::name($info->getState()) == 'READY') {
        printf(
            'Backup %s of size %d bytes was created at %d using encryption key %s' . PHP_EOL,
            basename($info->getName()),
            $info->getSizeBytes(),
            $info->getCreateTime()->getSeconds(),
            $info->getEncryptionInfo()->getKmsKeyVersion()
        );
    } else {
        print('Backup is not ready!' . PHP_EOL);
    }
}

def create_backup_with_encryption_key(
    instance_id, database_id, backup_id, kms_key_name
):
    """Creates a backup for a database using a Customer Managed Encryption Key (CMEK)."""

    from google.cloud.spanner_admin_database_v1 import \
        CreateBackupEncryptionConfig
    from google.cloud.spanner_admin_database_v1.types import \
        backup as backup_pb

    spanner_client = spanner.Client()
    database_admin_api = spanner_client.database_admin_api

    # Create a backup
    expire_time = datetime.utcnow() + timedelta(days=14)
    encryption_config = {
        "encryption_type": CreateBackupEncryptionConfig.EncryptionType.CUSTOMER_MANAGED_ENCRYPTION,
        "kms_key_name": kms_key_name,
    }
    request = backup_pb.CreateBackupRequest(
        parent=database_admin_api.instance_path(spanner_client.project, instance_id),
        backup_id=backup_id,
        backup=backup_pb.Backup(
            database=database_admin_api.database_path(
                spanner_client.project, instance_id, database_id
            ),
            expire_time=expire_time,
        ),
        encryption_config=encryption_config,
    )
    operation = database_admin_api.create_backup(request)

    # Wait for backup operation to complete.
    backup = operation.result(2100)

    # Verify that the backup is ready.
    assert backup.state == backup_pb.Backup.State.READY

    # Get the name, create time, backup size and encryption key.
    print(
        "Backup {} of size {} bytes was created at {} using encryption key {}".format(
            backup.name, backup.size_bytes, backup.create_time, kms_key_name
        )
    )

# project_id  = "Your Google Cloud project ID"
# instance_id = "Your Spanner instance ID"
# database_id = "Your Spanner database ID"
# backup_id = "Your Spanner backup ID"
# kms_key_name = "Your backup encryption database KMS key"

require "google/cloud/spanner"
require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin

instance_path = database_admin_client.instance_path project: project_id, instance: instance_id
db_path = database_admin_client.database_path project: project_id,
                                              instance: instance_id,
                                              database: database_id
backup_path = database_admin_client.backup_path project: project_id,
                                                instance: instance_id,
                                                backup: backup_id
expire_time = Time.now + (14 * 24 * 3600) # 14 days from now
encryption_config = {
  encryption_type: :CUSTOMER_MANAGED_ENCRYPTION,
  kms_key_name:    kms_key_name
}

job = database_admin_client.create_backup parent: instance_path,
                                          backup_id: backup_id,
                                          backup: {
                                            database: db_path,
                                              expire_time: expire_time
                                          },
                                          encryption_config: encryption_config

puts "Backup operation in progress"

job.wait_until_done!

backup = database_admin_client.get_backup name: backup_path
puts "Backup #{backup_id} of size #{backup.size_bytes} bytes was created at #{backup.create_time} using encryption key #{kms_key_name}"

using Google.Cloud.Spanner.Admin.Database.V1;
using Google.Cloud.Spanner.Common.V1;
using System;
using System.Threading.Tasks;

public class RestoreDatabaseWithEncryptionAsyncSample
{
    public async Task<Database> RestoreDatabaseWithEncryptionAsync(string projectId, string instanceId, string databaseId, string backupId, CryptoKeyName kmsKeyName)
    {
        // Create a DatabaseAdminClient instance.
        DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.Create();

        // Create the RestoreDatabaseRequest with encryption configuration.
        RestoreDatabaseRequest request = new RestoreDatabaseRequest
        {
            ParentAsInstanceName = InstanceName.FromProjectInstance(projectId, instanceId),
            DatabaseId = databaseId,
            BackupAsBackupName = BackupName.FromProjectInstanceBackup(projectId, instanceId, backupId),
            EncryptionConfig = new RestoreDatabaseEncryptionConfig
            {
                EncryptionType = RestoreDatabaseEncryptionConfig.Types.EncryptionType.CustomerManagedEncryption,
                KmsKeyNameAsCryptoKeyName = kmsKeyName,
            }
        };
        // Execute the RestoreDatabase request.
        var operation = await databaseAdminClient.RestoreDatabaseAsync(request);

        Console.WriteLine("Waiting for the operation to finish.");

        // Poll until the returned long-running operation is complete.
        var completedResponse = await operation.PollUntilCompletedAsync();
        if (completedResponse.IsFaulted)
        {
            Console.WriteLine($"Error while restoring database: {completedResponse.Exception}");
            throw completedResponse.Exception;
        }

        var database = completedResponse.Result;
        var restoreInfo = database.RestoreInfo;
        Console.WriteLine($"Database {restoreInfo.BackupInfo.SourceDatabase} " +
            $"restored to {database.Name} " +
            $"from backup {restoreInfo.BackupInfo.Backup} " +
            $"using encryption key {database.EncryptionConfig.KmsKeyName}");
        return database;
    }
}

void RestoreDatabaseWithEncryptionKey(
    google::cloud::spanner_admin::DatabaseAdminClient client,
    std::string const& project_id, std::string const& instance_id,
    std::string const& database_id, std::string const& backup_id,
    google::cloud::KmsKeyName const& encryption_key) {
  google::cloud::spanner::Database database(project_id, instance_id,
                                            database_id);
  google::cloud::spanner::Backup backup(database.instance(), backup_id);
  google::spanner::admin::database::v1::RestoreDatabaseRequest request;
  request.set_parent(database.instance().FullName());
  request.set_database_id(database.database_id());
  request.set_backup(backup.FullName());
  request.mutable_encryption_config()->set_encryption_type(
      google::spanner::admin::database::v1::RestoreDatabaseEncryptionConfig::
          CUSTOMER_MANAGED_ENCRYPTION);
  request.mutable_encryption_config()->set_kms_key_name(
      encryption_key.FullName());
  auto restored_db = client.RestoreDatabase(request).get();
  if (!restored_db) throw std::move(restored_db).status();
  std::cout << "Database";
  if (restored_db->restore_info().source_type() ==
      google::spanner::admin::database::v1::BACKUP) {
    auto const& backup_info = restored_db->restore_info().backup_info();
    std::cout << " " << backup_info.source_database() << " as of "
              << google::cloud::spanner::MakeTimestamp(
                     backup_info.version_time())
                     .value();
  }
  std::cout << " restored to " << restored_db->name();
  std::cout << " from backup " << backup.FullName();
  std::cout << " using encryption key " << encryption_key.FullName();
  std::cout << ".\n";
}

import (
	"context"
	"fmt"
	"io"
	"regexp"

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "cloud.google.com/go/spanner/admin/database/apiv1/databasepb"
)

func restoreBackupWithCustomerManagedEncryptionKey(ctx context.Context, w io.Writer, db, backupID, kmsKeyName string) error {
	// db = `projects/<project>/instances/<instance-id>/database/<database-id>`
	// backupID = `my-backup-id`
	// kmsKeyName = `projects/<project>/locations/<location>/keyRings/<key_ring>/cryptoKeys/<kms_key_name>`
	matches := regexp.MustCompile("^(.*)/databases/(.*)$").FindStringSubmatch(db)
	if matches == nil || len(matches) != 3 {
		return fmt.Errorf("restoreBackupWithCustomerManagedEncryptionKey: invalid database id %q", db)
	}
	instanceName := matches[1]
	databaseID := matches[2]
	backupName := instanceName + "/backups/" + backupID

	adminClient, err := database.NewDatabaseAdminClient(ctx)
	if err != nil {
		return fmt.Errorf("restoreBackupWithCustomerManagedEncryptionKey.NewDatabaseAdminClient: %w", err)
	}
	defer adminClient.Close()

	// Restore a database from a backup using a Customer Managed Encryption Key.
	restoreOp, err := adminClient.RestoreDatabase(ctx, &adminpb.RestoreDatabaseRequest{
		Parent:     instanceName,
		DatabaseId: databaseID,
		Source: &adminpb.RestoreDatabaseRequest_Backup{
			Backup: backupName,
		},
		EncryptionConfig: &adminpb.RestoreDatabaseEncryptionConfig{
			EncryptionType: adminpb.RestoreDatabaseEncryptionConfig_CUSTOMER_MANAGED_ENCRYPTION,
			KmsKeyName:     kmsKeyName,
		},
	})
	if err != nil {
		return fmt.Errorf("restoreBackupWithCustomerManagedEncryptionKey.RestoreDatabase: %w", err)
	}
	// Wait for restore operation to complete.
	restoredDatabase, err := restoreOp.Wait(ctx)
	if err != nil {
		return fmt.Errorf("restoreBackupWithCustomerManagedEncryptionKey.Wait: %w", err)
	}
	// Get the information from the newly restored database.
	backupInfo := restoredDatabase.RestoreInfo.GetBackupInfo()
	fmt.Fprintf(w, "Database %s restored from backup %s using encryption key %s\n",
		backupInfo.SourceDatabase,
		backupInfo.Backup,
		restoredDatabase.EncryptionConfig.KmsKeyName)

	return nil
}

import static com.google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig.EncryptionType.CUSTOMER_MANAGED_ENCRYPTION;

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerExceptionFactory;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient;
import com.google.spanner.admin.database.v1.BackupName;
import com.google.spanner.admin.database.v1.Database;
import com.google.spanner.admin.database.v1.InstanceName;
import com.google.spanner.admin.database.v1.RestoreDatabaseEncryptionConfig;
import com.google.spanner.admin.database.v1.RestoreDatabaseRequest;
import java.util.concurrent.ExecutionException;

public class RestoreBackupWithEncryptionKey {

  static void restoreBackupWithEncryptionKey() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String instanceId = "my-instance";
    String databaseId = "my-database";
    String backupId = "my-backup";
    String kmsKeyName =
        "projects/" + projectId + "/locations/<location>/keyRings/<keyRing>/cryptoKeys/<keyId>";

    try (Spanner spanner =
        SpannerOptions.newBuilder().setProjectId(projectId).build().getService();
        DatabaseAdminClient adminClient = spanner.createDatabaseAdminClient()) {
      restoreBackupWithEncryptionKey(
          adminClient,
          projectId,
          instanceId,
          backupId,
          databaseId,
          kmsKeyName);
    }
  }

  static Void restoreBackupWithEncryptionKey(DatabaseAdminClient adminClient,
      String projectId, String instanceId, String backupId, String restoreId, String kmsKeyName) {
    RestoreDatabaseRequest request =
        RestoreDatabaseRequest.newBuilder()
            .setParent(InstanceName.of(projectId, instanceId).toString())
            .setDatabaseId(restoreId)
            .setBackup(BackupName.of(projectId, instanceId, backupId).toString())
            .setEncryptionConfig(RestoreDatabaseEncryptionConfig.newBuilder()
                .setEncryptionType(CUSTOMER_MANAGED_ENCRYPTION).setKmsKeyName(kmsKeyName)).build();
    Database database;
    try {
      System.out.println("Waiting for operation to complete...");
      database = adminClient.restoreDatabaseAsync(request).get();
      ;
    } catch (ExecutionException e) {
      // If the operation failed during execution, expose the cause.
      throw SpannerExceptionFactory.asSpannerException(e.getCause());
    } catch (InterruptedException e) {
      // Throw when a thread is waiting, sleeping, or otherwise occupied,
      // and the thread is interrupted, either before or during the activity.
      throw SpannerExceptionFactory.propagateInterrupt(e);
    }

    System.out.printf(
        "Database %s restored to %s from backup %s using encryption key %s%n",
        database.getRestoreInfo().getBackupInfo().getSourceDatabase(),
        database.getName(),
        database.getRestoreInfo().getBackupInfo().getBackup(),
        database.getEncryptionConfig().getKmsKeyName()
    );
    return null;
  }
}

// Imports the Google Cloud client library and precise date library
const {Spanner} = require('@google-cloud/spanner');

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const projectId = 'my-project-id';
// const instanceId = 'my-instance';
// const databaseId = 'my-database';
// const backupId = 'my-backup';
// const keyName =
//   'projects/my-project-id/my-region/keyRings/my-key-ring/cryptoKeys/my-key';

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

// Gets a reference to a Cloud Spanner Database Admin Client object
const databaseAdminClient = spanner.getDatabaseAdminClient();

// Restore the database
console.log(
  `Restoring database ${databaseAdminClient.databasePath(
    projectId,
    instanceId,
    databaseId
  )} from backup ${backupId}.`
);
const [restoreOperation] = await databaseAdminClient.restoreDatabase({
  parent: databaseAdminClient.instancePath(projectId, instanceId),
  databaseId: databaseId,
  backup: databaseAdminClient.backupPath(projectId, instanceId, backupId),
  encryptionConfig: {
    encryptionType: 'CUSTOMER_MANAGED_ENCRYPTION',
    kmsKeyName: keyName,
  },
});

// Wait for restore to complete
console.log('Waiting for database restore to complete...');
await restoreOperation.promise();

console.log('Database restored from backup.');
const [metadata] = await databaseAdminClient.getDatabase({
  name: databaseAdminClient.databasePath(projectId, instanceId, databaseId),
});
console.log(
  `Database ${metadata.restoreInfo.backupInfo.sourceDatabase} was restored ` +
    `to ${databaseId} from backup ${metadata.restoreInfo.backupInfo.backup} ` +
    `using encryption key ${metadata.encryptionConfig.kmsKeyName}.`
);

use Google\Cloud\Spanner\Admin\Database\V1\Client\DatabaseAdminClient;
use Google\Cloud\Spanner\Admin\Database\V1\RestoreDatabaseEncryptionConfig;
use Google\Cloud\Spanner\Admin\Database\V1\RestoreDatabaseRequest;

/**
 * Restore a database from a backup.
 * Example:
 * ```
 * restore_backup_with_encryption_key($projectId, $instanceId, $databaseId, $backupId, $kmsKeyName);
 * ```
 * @param string $projectId The Google Cloud project ID.
 * @param string $instanceId The Spanner instance ID.
 * @param string $databaseId The Spanner database ID.
 * @param string $backupId The Spanner backup ID.
 * @param string $kmsKeyName The KMS key used for encryption.
 */
function restore_backup_with_encryption_key(
    string $projectId,
    string $instanceId,
    string $databaseId,
    string $backupId,
    string $kmsKeyName
): void {
    $databaseAdminClient = new DatabaseAdminClient();
    $instanceFullName = DatabaseAdminClient::instanceName($projectId, $instanceId);
    $backupFullName = DatabaseAdminClient::backupName($projectId, $instanceId, $backupId);
    $request = new RestoreDatabaseRequest([
        'parent' => $instanceFullName,
        'database_id' => $databaseId,
        'backup' => $backupFullName,
        'encryption_config' => new RestoreDatabaseEncryptionConfig([
            'kms_key_name' => $kmsKeyName,
            'encryption_type' => RestoreDatabaseEncryptionConfig\EncryptionType::CUSTOMER_MANAGED_ENCRYPTION
        ])
    ]);

    // Create restore operation
    $operation = $databaseAdminClient->restoreDatabase($request);

    print('Waiting for operation to complete...' . PHP_EOL);
    $operation->pollUntilComplete();

    // Reload new database and get restore info
    $database = $operation->operationSucceeded() ? $operation->getResult() : null;
    $restoreInfo = $database->getRestoreInfo();
    $backupInfo = $restoreInfo->getBackupInfo();
    $sourceDatabase = $backupInfo->getSourceDatabase();
    $sourceBackup = $backupInfo->getBackup();
    $encryptionConfig = $database->getEncryptionConfig();
    printf(
        'Database %s restored from backup %s using encryption key %s' . PHP_EOL,
        $sourceDatabase, $sourceBackup, $encryptionConfig->getKmsKeyName()
    );
}

def restore_database_with_encryption_key(
    instance_id, new_database_id, backup_id, kms_key_name
):
    """Restores a database from a backup using a Customer Managed Encryption Key (CMEK)."""
    from google.cloud.spanner_admin_database_v1 import (
        RestoreDatabaseEncryptionConfig, RestoreDatabaseRequest)

    spanner_client = spanner.Client()
    database_admin_api = spanner_client.database_admin_api

    # Start restoring an existing backup to a new database.
    encryption_config = {
        "encryption_type": RestoreDatabaseEncryptionConfig.EncryptionType.CUSTOMER_MANAGED_ENCRYPTION,
        "kms_key_name": kms_key_name,
    }

    request = RestoreDatabaseRequest(
        parent=database_admin_api.instance_path(spanner_client.project, instance_id),
        database_id=new_database_id,
        backup=database_admin_api.backup_path(
            spanner_client.project, instance_id, backup_id
        ),
        encryption_config=encryption_config,
    )
    operation = database_admin_api.restore_database(request)

    # Wait for restore operation to complete.
    db = operation.result(1600)

    # Newly created database has restore information.
    restore_info = db.restore_info
    print(
        "Database {} restored to {} from backup {} with using encryption key {}.".format(
            restore_info.backup_info.source_database,
            new_database_id,
            restore_info.backup_info.backup,
            db.encryption_config.kms_key_name,
        )
    )

# project_id  = "Your Google Cloud project ID"
# instance_id = "Your Spanner instance ID"
# database_id = "Your Spanner database ID of where to restore"
# backup_id = "Your Spanner backup ID"
# kms_key_name = "Your backup encryption database KMS key"

require "google/cloud/spanner"
require "google/cloud/spanner/admin/database"

database_admin_client = Google::Cloud::Spanner::Admin::Database.database_admin

instance_path = database_admin_client.instance_path project: project_id, instance: instance_id

db_path = database_admin_client.database_path project: project_id,
                                              instance: instance_id,
                                              database: database_id

backup_path = database_admin_client.backup_path project: project_id,
                                                instance: instance_id,
                                                backup: backup_id

encryption_config = {
  encryption_type: :CUSTOMER_MANAGED_ENCRYPTION,
  kms_key_name:    kms_key_name
}
job = database_admin_client.restore_database parent: instance_path,
                                             database_id: database_id,
                                             backup: backup_path,
                                             encryption_config: encryption_config

puts "Waiting for restore backup operation to complete"

job.wait_until_done!
database = database_admin_client.get_database name: db_path
restore_info = database.restore_info
puts "Database #{restore_info.backup_info.source_database} was restored to #{database_id} from backup #{restore_info.backup_info.backup} using encryption key #{database.encryption_config.kms_key_name}"