Enumerar buckets mediante los SDK de Amazon S3

Enumera los buckets de Cloud Storage que usan los SDK de Amazon Simple Storage Service (Amazon S3) mediante la API de Cloud Storage para XML con credenciales HMAC.

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Para obtener documentación en la que se incluye esta muestra de código, consulta lo siguiente:

Migración simple de Amazon S3 a Cloud Storage

Muestra de código

Go

Si deseas obtener más información, consulta la documentación de referencia de la API de Cloud Storage Go.

Para autenticarte en Cloud Storage, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.

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

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/credentials"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
)

func listGCSBuckets(w io.Writer, googleAccessKeyID string, googleAccessKeySecret string) error {
	// googleAccessKeyID := "Your Google Access Key ID"
	// googleAccessKeySecret := "Your Google Access Key Secret"

	// Create a new client and do the following:
	// 1. Change the endpoint URL to use the Google Cloud Storage XML API endpoint.
	// 2. Use Cloud Storage HMAC Credentials.
	sess := session.Must(session.NewSession(&aws.Config{
		Region:      aws.String("auto"),
		Endpoint:    aws.String("https://storage.googleapis.com"),
		Credentials: credentials.NewStaticCredentials(googleAccessKeyID, googleAccessKeySecret, ""),
	}))

	client := s3.New(sess)
	ctx := context.Background()

	ctx, cancel := context.WithTimeout(ctx, time.Second*10)
	defer cancel()
	result, err := client.ListBucketsWithContext(ctx, &s3.ListBucketsInput{})
	if err != nil {
		return fmt.Errorf("ListBucketsWithContext: %w", err)
	}

	fmt.Fprintf(w, "Buckets:")
	for _, b := range result.Buckets {
		fmt.Fprintf(w, "%s\n", aws.StringValue(b.Name))
	}

	return nil
}

Java

Si deseas obtener más información, consulta la documentación de referencia de la API de Cloud Storage Java.

import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.Bucket;
import java.util.List;

public class ListGcsBuckets {
  public static void listGcsBuckets(String googleAccessKeyId, String googleAccessKeySecret) {

    // String googleAccessKeyId = "your-google-access-key-id";
    // String googleAccessKeySecret = "your-google-access-key-secret";

    // Create a BasicAWSCredentials using Cloud Storage HMAC credentials.
    BasicAWSCredentials googleCreds =
        new BasicAWSCredentials(googleAccessKeyId, googleAccessKeySecret);

    // Create a new client and do the following:
    // 1. Change the endpoint URL to use the Google Cloud Storage XML API endpoint.
    // 2. Use Cloud Storage HMAC Credentials.
    AmazonS3 interopClient =
        AmazonS3ClientBuilder.standard()
            .withEndpointConfiguration(
                new AwsClientBuilder.EndpointConfiguration(
                    "https://storage.googleapis.com", "auto"))
            .withCredentials(new AWSStaticCredentialsProvider(googleCreds))
            .build();

    // Call GCS to list current buckets
    List<Bucket> buckets = interopClient.listBuckets();

    // Print bucket names
    System.out.println("Buckets:");
    for (Bucket bucket : buckets) {
      System.out.println(bucket.getName());
    }

    // Explicitly clean up client resources.
    interopClient.shutdown();
  }

Python

Si deseas obtener más información, consulta la documentación de referencia de la API de Cloud Storage Python.

import boto3  # type: ignore


def list_gcs_buckets(
    google_access_key_id: str, google_access_key_secret: str
) -> List[str]:
    """Lists all Cloud Storage buckets using AWS SDK for Python (boto3)
    Positional arguments:
        google_access_key_id: hash-based message authentication code (HMAC) access ID
        google_access_key_secret: HMAC access secret

    Returned value is a list of strings, one for each bucket name.

    To use this sample:
    1. Create a Cloud Storage HMAC key: https://cloud.google.com/storage/docs/authentication/managing-hmackeys#create
    2. Change endpoint_url to a Google Cloud Storage XML API endpoint.

    To learn more about HMAC: https://cloud.google.com/storage/docs/authentication/hmackeys#overview
    """
    client = boto3.client(
        "s3",
        region_name="auto",
        endpoint_url="https://storage.googleapis.com",
        aws_access_key_id=google_access_key_id,
        aws_secret_access_key=google_access_key_secret,
    )

    # Call GCS to list current buckets
    response = client.list_buckets()

    # Return list of bucket names
    results = []
    for bucket in response["Buckets"]:
        results.append(bucket["Name"])
        print(bucket["Name"])  # Can remove if not needed after development
    return results

¿Qué sigue?

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