Archive un archivo en Amazon S3 Glacier, reciba notificaciones e inicie un trabajo con un AWS SDK

En el siguiente ejemplo de código, se muestra cómo:

• Crear un almacén de Amazon S3 Glacier.

• Configurar el almacén para publicar notificaciones en un tema de Amazon SNS.

• Cargar un archivo de almacenamiento en el almacén.

• Se inicia un trabajo de recuperación de archivo.

Python

SDK para Python (Boto3)

nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

Cree una clase que contenga las operaciones de S3 Glacier.

import argparse
import logging
import os
import boto3
from botocore.exceptions import ClientError

logger = logging.getLogger(__name__)


class GlacierWrapper:
    """Encapsulates Amazon S3 Glacier API operations."""

    def __init__(self, glacier_resource):
        """
        :param glacier_resource: A Boto3 Amazon S3 Glacier resource.
        """
        self.glacier_resource = glacier_resource


    def create_vault(self, vault_name):
        """
        Creates a vault.

        :param vault_name: The name to give the vault.
        :return: The newly created vault.
        """
        try:
            vault = self.glacier_resource.create_vault(vaultName=vault_name)
            logger.info("Created vault %s.", vault_name)
        except ClientError:
            logger.exception("Couldn't create vault %s.", vault_name)
            raise
        else:
            return vault


    def list_vaults(self):
        """
        Lists vaults for the current account.
        """
        try:
            for vault in self.glacier_resource.vaults.all():
                logger.info("Got vault %s.", vault.name)
        except ClientError:
            logger.exception("Couldn't list vaults.")
            raise


    @staticmethod
    def upload_archive(vault, archive_description, archive_file):
        """
        Uploads an archive to a vault.

        :param vault: The vault where the archive is put.
        :param archive_description: A description of the archive.
        :param archive_file: The archive file to put in the vault.
        :return: The uploaded archive.
        """
        try:
            archive = vault.upload_archive(
                archiveDescription=archive_description, body=archive_file
            )
            logger.info(
                "Uploaded %s with ID %s to vault %s.",
                archive_description,
                archive.id,
                vault.name,
            )
        except ClientError:
            logger.exception(
                "Couldn't upload %s to %s.", archive_description, vault.name
            )
            raise
        else:
            return archive


    @staticmethod
    def initiate_archive_retrieval(archive):
        """
        Initiates an archive retrieval job. Standard retrievals typically complete
        within 3—5 hours. When the job completes, you can get the archive contents
        by calling get_output().

        :param archive: The archive to retrieve.
        :return: The archive retrieval job.
        """
        try:
            job = archive.initiate_archive_retrieval()
            logger.info("Started %s job with ID %s.", job.action, job.id)
        except ClientError:
            logger.exception("Couldn't start job on archive %s.", archive.id)
            raise
        else:
            return job


    @staticmethod
    def list_jobs(vault, job_type):
        """
        Lists jobs by type for the specified vault.

        :param vault: The vault to query.
        :param job_type: The type of job to list.
        :return: The list of jobs of the requested type.
        """
        job_list = []
        try:
            if job_type == "all":
                jobs = vault.jobs.all()
            elif job_type == "in_progress":
                jobs = vault.jobs_in_progress.all()
            elif job_type == "completed":
                jobs = vault.completed_jobs.all()
            elif job_type == "succeeded":
                jobs = vault.succeeded_jobs.all()
            elif job_type == "failed":
                jobs = vault.failed_jobs.all()
            else:
                jobs = []
                logger.warning("%s isn't a type of job I can get.", job_type)
            for job in jobs:
                job_list.append(job)
                logger.info("Got %s %s job %s.", job_type, job.action, job.id)
        except ClientError:
            logger.exception("Couldn't get %s jobs from %s.", job_type, vault.name)
            raise
        else:
            return job_list


    def set_notifications(self, vault, sns_topic_arn):
        """
        Sets an Amazon Simple Notification Service (Amazon SNS) topic as a target
        for notifications. Amazon S3 Glacier publishes messages to this topic for
        the configured list of events.

        :param vault: The vault to set up to publish notifications.
        :param sns_topic_arn: The Amazon Resource Name (ARN) of the topic that
                              receives notifications.
        :return: Data about the new notification configuration.
        """
        try:
            notification = self.glacier_resource.Notification("-", vault.name)
            notification.set(
                vaultNotificationConfig={
                    "SNSTopic": sns_topic_arn,
                    "Events": [
                        "ArchiveRetrievalCompleted",
                        "InventoryRetrievalCompleted",
                    ],
                }
            )
            logger.info(
                "Notifications will be sent to %s for events %s from %s.",
                notification.sns_topic,
                notification.events,
                notification.vault_name,
            )
        except ClientError:
            logger.exception(
                "Couldn't set notifications to %s on %s.", sns_topic_arn, vault.name
            )
            raise
        else:
            return notification

Llame a las funciones de la clase de contenedor para crear un almacén y cargar un archivo y, a continuación, configure el almacén para publicar notificaciones e iniciar un trabajo para recuperar el archivo.

def upload_demo(glacier, vault_name, topic_arn):
    """
    Shows how to:
    * Create a vault.
    * Configure the vault to publish notifications to an Amazon SNS topic.
    * Upload an archive.
    * Start a job to retrieve the archive.

    :param glacier: A Boto3 Amazon S3 Glacier resource.
    :param vault_name: The name of the vault to create.
    :param topic_arn: The ARN of an Amazon SNS topic that receives notification of
                      Amazon S3 Glacier events.
    """
    print(f"\nCreating vault {vault_name}.")
    vault = glacier.create_vault(vault_name)
    print("\nList of vaults in your account:")
    glacier.list_vaults()
    print(f"\nUploading glacier_basics.py to {vault.name}.")
    with open("glacier_basics.py", "rb") as upload_file:
        archive = glacier.upload_archive(vault, "glacier_basics.py", upload_file)
    print(
        "\nStarting an archive retrieval request to get the file back from the "
        "vault."
    )
    glacier.initiate_archive_retrieval(archive)
    print("\nListing in progress jobs:")
    glacier.list_jobs(vault, "in_progress")
    print(
        "\nBecause Amazon S3 Glacier is intended for infrequent retrieval, an "
        "archive request with Standard retrieval typically completes within 3–5 "
        "hours."
    )
    if topic_arn:
        notification = glacier.set_notifications(vault, topic_arn)
        print(
            f"\nVault {vault.name} is configured to notify the "
            f"{notification.sns_topic} topic when {notification.events} "
            f"events occur. You can subscribe to this topic to receive "
            f"a message when the archive retrieval completes.\n"
        )
    else:
        print(
            f"\nVault {vault.name} is not configured to notify an Amazon SNS topic "
            f"when the archive retrieval completes so wait a few hours."
        )
    print("\nRetrieve your job output by running this script with the --retrieve flag.")

• Para obtener información sobre la API, consulte los siguientes temas en la Referencia de la API de AWS SDK para Python (Boto3).

  • CreateVault

  • InitiateJob

  • ListJobs

  • ListVaults

  • SetVaultNotifications

  • UploadArchive

Para obtener una lista completa de guías para desarrolladores del AWS SDK y ejemplos de código, consulteUso de S3 Glacier con un AWS SDK. En este tema también se incluye información sobre cómo comenzar a utilizar el SDK y detalles sobre sus versiones anteriores.