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Arquive um arquivo no Amazon S3 Glacier, receba notificações e inicie um trabalho usando um AWS SDK
O exemplo de código a seguir mostra como:
Criar um cofre do Amazon S3 Glacier.
Configure o cofre para publicar notificações em um SNS tópico da Amazon.
Fazer upload de um arquivo para o cofre.
Iniciar um trabalho de recuperação de arquivo.
- Python
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- SDKpara Python (Boto3)
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nota
Tem mais sobre GitHub. Encontre o exemplo completo e saiba como configurar e executar no Repositório de exemplos de código da AWS
. Crie uma classe que envolva operações do 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
Chame funções na classe wrapper para criar um cofre e fazer upload de um arquivo, depois configure o cofre para publicar notificações e iniciar um trabalho para recuperar o arquivo.
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.")
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Para API obter detalhes, consulte os tópicos a seguir em AWS SDKfor Python (Boto3) Reference. API
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