Object Storage Service:Converter a classe de armazenamento de objetos usando o OSS SDK for Python 1.0

Observações

• Este tópico utiliza o endpoint público da região China (Hangzhou). Para acessar o OSS a partir de outros serviços Alibaba Cloud na mesma região, utilize um endpoint interno. Para mais informações sobre regiões e endpoints do OSS, consulte Regions and endpoints.

• Neste tópico, as credenciais de acesso são obtidas de variáveis de ambiente. Para mais informações sobre como configurar credenciais de acesso, consulte Configure access credentials using OSS SDK for Python 1.0.

• Este tópico demonstra como criar uma instância OSSClient com um endpoint do OSS. Para configurações alternativas, como uso de um domínio personalizado ou autenticação com credenciais do Security Token Service (STS), consulte Initialization.

• Para converter a classe de armazenamento de um objeto, você precisa ter as permissões oss:GetObject, oss:PutObject e oss:RestoreObject. Para mais informações, consulte Grant a custom policy.

Exemplos

Converter a classe de armazenamento de um objeto de Standard ou IA para Archive, Cold Archive ou Deep Cold Archive

O código de exemplo a seguir converte a classe de armazenamento de um objeto de Standard ou IA para Archive, Cold Archive ou Deep Cold Archive:

# -*- coding: utf-8 -*-
import oss2
from oss2.credentials import EnvironmentVariableCredentialsProvider
import os
# Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
auth = oss2.ProviderAuthV4(EnvironmentVariableCredentialsProvider())

# Specify the endpoint of the bucket region (for example: https://oss-cn-hangzhou.aliyuncs.com). 
endpoint = "https://oss-cn-hangzhou.aliyuncs.com"

# Specify the ID of the region that maps to the endpoint. Example: cn-hangzhou. This parameter is required if you use the signature algorithm V4.
region = "cn-hangzhou"

# Specify the name of your bucket.
bucket = oss2.Bucket(auth, endpoint, "yourBucketName", region=region)

# Specify the full path of the object. Do not include the bucket name in the full path. Example: exampledir/exampleobject.txt. 
# Make sure that the storage class of the object is Standard or IA. 
object_name = 'exampledir/exampleobject.txt'

# Convert the storage class of the object to Archive by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_ARCHIVE. 
headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_ARCHIVE}
# Convert the storage class of the object to Cold Archive by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_COLD_ARCHIVE. 
# headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_COLD_ARCHIVE}
# Convert the storage class of the object to Deep Cold Archive by setting the x-oss-storage-class header to BUCKET_STORAGE_CLASS_DEEP_COLD_ARCHIVE 
# headers = {'x-oss-storage-class': oss2.models.BUCKET_STORAGE_CLASS_DEEP_COLD_ARCHIVE}
# Convert the storage class of the object. 
bucket.copy_object(bucket.bucket_name, object_name, object_name, headers)                    

Converter a classe de armazenamento de um objeto de Archive para Standard ou IA

O código de exemplo a seguir converte a classe de armazenamento de um objeto de Archive para Standard ou IA:

# -*- coding: utf-8 -*-
import oss2
from oss2.credentials import EnvironmentVariableCredentialsProvider
import os
import time
# Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
auth = oss2.ProviderAuthV4(EnvironmentVariableCredentialsProvider())

# Specify the endpoint of the bucket region (for example: https://oss-cn-hangzhou.aliyuncs.com). 
endpoint = "https://oss-cn-hangzhou.aliyuncs.com"

# Specify the ID of the region that maps to the endpoint. Example: cn-hangzhou. This parameter is required if you use the signature algorithm V4.
region = "cn-hangzhou"

# Specify the name of your bucket.
bucket = oss2.Bucket(auth, endpoint, "yourBucketName", region=region)

# Specify the full path of the object. Do not include the bucket name in the full path. Example: exampledir/exampleobject.txt. 
# Make sure that the storage class of the object is Archive. 
object_name = 'exampledir/exampleobject.txt'

# Obtain the object metadata. 
meta = bucket.head_object(object_name)

# Restore the object. The amount of time required to restore an object varies based on the size of the object. 
if meta.resp.headers['x-oss-storage-class'] == oss2.BUCKET_STORAGE_CLASS_ARCHIVE:
    bucket.restore_object(object_name)
    while True:
        meta = bucket.head_object(object_name)
        if meta.resp.headers['x-oss-restore'] == 'ongoing-request="true"':
            time.sleep(5)
        else:
            break

# Convert the storage class of the object to Standard by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_STANDARD. 
headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_STANDARD}
# Convert the storage class of the object to IA by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_IA. 
# headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_IA}

# Convert the storage class of the object. 
bucket.copy_object(bucket.bucket_name, object_name, object_name, headers)

Converter a classe de armazenamento de um objeto de Cold Archive para Standard ou IA

O código de exemplo a seguir converte a classe de armazenamento de um objeto de Cold Archive para Standard ou IA:

# -*- coding: utf-8 -*-
import oss2
from oss2.credentials import EnvironmentVariableCredentialsProvider
import os
import time
from oss2.models import RESTORE_TIER_EXPEDITED, RestoreJobParameters

# Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
auth = oss2.ProviderAuthV4(EnvironmentVariableCredentialsProvider())

# Specify the endpoint of the bucket region (for example: https://oss-cn-hangzhou.aliyuncs.com). 
endpoint = "https://oss-cn-hangzhou.aliyuncs.com"

# Specify the ID of the region that maps to the endpoint. Example: cn-hangzhou. This parameter is required if you use the signature algorithm V4.
region = "cn-hangzhou"

# Specify the name of your bucket.
bucket = oss2.Bucket(auth, endpoint, "yourBucketName", region=region)

# Specify the full path of the object. Do not include the bucket name in the full path. Example: exampledir/exampleobject.txt. 
# Make sure that the storage class of the object is Cold Archive. 
object_name = 'exampledir/exampleobject.txt'

# Obtain the object metadata. 
meta = bucket.head_object(object_name)

# Restore the object. 
if meta.resp.headers['x-oss-storage-class'] == oss2.BUCKET_STORAGE_CLASS_COLD_ARCHIVE:
    # Specify the restoration priority. RESTORE_TIER_EXPEDITED specifies that the object is restored within 1 hour. 
    job_parameters = RestoreJobParameters(RESTORE_TIER_EXPEDITED)
    # Specify the duration for which the object can remain in the restored state. Unit: days.     
    restore_config = oss2.models.RestoreConfiguration(days=5, job_parameters=job_parameters)
    bucket.restore_object(object_name, input=restore_config)
    while True:
        meta = bucket.head_object(object_name)
        if meta.resp.headers['x-oss-restore'] == 'ongoing-request="true"':
            time.sleep(5)
        else:
            break
# Convert the storage class of the object to Standard by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_STANDARD. 
headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_STANDARD}
# Convert the storage class of the object to IA by setting the x-oss-storage-class header to oss2.BUCKET_STORAGE_CLASS_IA. 
# headers = {'x-oss-storage-class': oss2.BUCKET_STORAGE_CLASS_IA}

# Convert the storage class of the object. 
bucket.copy_object(bucket.bucket_name, object_name, object_name, headers)

Referências

Para mais informações sobre a operação de API usada para converter a classe de armazenamento de um objeto, consulte CopyObject.