Elimina backup

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Eliminare un backup del database.

Per saperne di più

Per la documentazione dettagliata che include questo esempio di codice, vedi quanto segue:

Esempio di codice

C++

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

void DeleteBackup(google::cloud::spanner_admin::DatabaseAdminClient client,
                  std::string const& project_id, std::string const& instance_id,
                  std::string const& backup_id) {
  google::cloud::spanner::Backup backup(
      google::cloud::spanner::Instance(project_id, instance_id), backup_id);
  auto status = client.DeleteBackup(backup.FullName());
  if (!status.ok()) throw std::move(status);
  std::cout << "Backup " << backup.FullName() << " was deleted.\n";
}

C#

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 


using Google.Cloud.Spanner.Admin.Database.V1;
using System;

public class DeleteBackupSample
{
    public void DeleteBackup(string projectId, string instanceId, string backupId)
    {
        // Create the DatabaseAdminClient instance.
        DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.Create();

        // Make the DeleteBackup request.
        BackupName backupName = BackupName.FromProjectInstanceBackup(projectId, instanceId, backupId);
        databaseAdminClient.DeleteBackup(backupName);

        Console.WriteLine("Backup deleted successfully.");
    }
}

Go

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 


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

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "google.golang.org/genproto/googleapis/spanner/admin/database/v1"
)

func deleteBackup(ctx context.Context, w io.Writer, db, backupID string) error {
	adminClient, err := database.NewDatabaseAdminClient(ctx)
	if err != nil {
		return err
	}
	defer adminClient.Close()

	matches := regexp.MustCompile("^(.*)/databases/(.*)$").FindStringSubmatch(db)
	if matches == nil || len(matches) != 3 {
		return fmt.Errorf("Invalid database id %s", db)
	}
	backupName := matches[1] + "/backups/" + backupID
	// Delete the backup.
	err = adminClient.DeleteBackup(ctx, &adminpb.DeleteBackupRequest{Name: backupName})
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Deleted backup %s\n", backupID)
	return nil
}

Java

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

static void deleteBackup(DatabaseAdminClient dbAdminClient, BackupId backupId) {
  Backup backup = dbAdminClient.newBackupBuilder(backupId).build();
  // Delete the backup.
  System.out.println("Deleting backup [" + backupId + "]...");
  backup.delete();
  // Verify that the backup is deleted.
  if (backup.exists()) {
    System.out.println("Delete backup [" + backupId + "] failed");
    throw new RuntimeException("Delete backup [" + backupId + "] failed");
  } else {
    System.out.println("Deleted backup [" + backupId + "]");
  }
}

Node.js

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

// Imports the Google Cloud client 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';

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

// Gets a reference to a Cloud Spanner instance and backup
const instance = spanner.instance(instanceId);
const backup = instance.backup(backupId);

// Delete the backup
console.log(`Deleting backup ${backupId}.`);
await backup.delete();

// Verify backup no longer exists
const exists = await backup.exists();
if (exists) {
  console.error('Error: backup still exists.');
} else {
  console.log('Backup deleted.');
}

PHP

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

use Google\Cloud\Spanner\SpannerClient;

/**
 * Delete a backup.
 * Example:
 * ```
 * delete_backup($instanceId, $backupId);
 * ```
 * @param string $instanceId The Spanner instance ID.
 * @param string $backupId The Spanner backup ID.
 */
function delete_backup(string $instanceId, string $backupId): void
{
    $spanner = new SpannerClient();
    $instance = $spanner->instance($instanceId);
    $backup = $instance->backup($backupId);
    $backupName = $backup->name();
    $backup->delete();
    print("Backup $backupName deleted" . PHP_EOL);
}

Python

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

def delete_backup(instance_id, backup_id):
    spanner_client = spanner.Client()
    instance = spanner_client.instance(instance_id)
    backup = instance.backup(backup_id)
    backup.reload()

    # Wait for databases that reference this backup to finish optimizing.
    while backup.referencing_databases:
        time.sleep(30)
        backup.reload()

    # Delete the backup.
    backup.delete()

    # Verify that the backup is deleted.
    assert backup.exists() is False
    print("Backup {} has been deleted.".format(backup.name))

Ruby

Per scoprire come installare e utilizzare la libreria client per Spanner, consulta la pagina relativa alle librerie client di Spanner. 

# project_id  = "Your Google Cloud project ID"
# instance_id = "Your Spanner instance ID"
# backup_id = "Your Spanner backup ID"

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

database_admin_client.delete_backup name: backup_path
puts "Backup #{backup_id} deleted"

Passaggi successivi

Per cercare e filtrare esempi di codice per altri prodotti Google Cloud, consulta il browser di esempio Google Cloud.