Antes de leer un objeto Archive o Cold Archive, debe restaurarlo. En este tema se describe cómo restaurar un objeto Archive o Cold Archive.
Notas
La operación RestoreObject solo se puede invocar en objetos Archive y Cold Archive.
En este tema se utiliza el endpoint público de la región China (Hangzhou). Si desea acceder a OSS desde otros servicios de Alibaba Cloud ubicados en la misma región que OSS, utilice un endpoint interno. Para obtener más información sobre las regiones y los endpoints de OSS, consulte Regions and endpoints.
En este tema se muestra cómo crear una instancia de OSSClient con un endpoint de OSS. Para conocer configuraciones alternativas, como usar un dominio personalizado o autenticarse con credenciales de Security Token Service (STS), consulte Initialization (C# SDK V1).
Para restaurar objetos, necesita el permiso
oss:RestoreObject. Para obtener más información, consulte Grant a custom policy.
Restaurar un objeto Archive
A continuación se muestra un ejemplo de código para restaurar un objeto Archive:
using Aliyun.OSS;
using Aliyun.OSS.Model;
using Aliyun.OSS.Model;
using System.Net;
using System.Text;
using Aliyun.OSS.Common;
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com.
var endpoint = "yourEndpoint";
// 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.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Specify the full path of the object. The path cannot contain the bucket name.
var objectName = "yourObjectName";
// Specify the content of the object.
var objectContent = "More than just cloud.";
int maxWaitTimeInSeconds = 600;
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
const string region = "cn-hangzhou";
// Create a ClientConfiguration instance and modify the default parameters based on your requirements.
var conf = new ClientConfiguration();
// Use the signature algorithm V4.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OSSClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
try
{
// Create an Archive bucket.
var bucket = client.CreateBucket(bucketName, StorageClass.Archive);
Console.WriteLine("Create Archive bucket succeeded, {0} ", bucket.Name);
}
catch (Exception ex)
{
Console.WriteLine("Create Archive bucket failed, {0}", ex.Message);
}
// Upload the object to the bucket and set the storage class of the object to Archive.
try
{
byte[] binaryData = Encoding.ASCII.GetBytes(objectContent);
MemoryStream requestContent = new MemoryStream(binaryData);
client.PutObject(bucketName, objectName, requestContent);
Console.WriteLine("Put object succeeded, {0}", objectName);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
var metadata = client.GetObjectMetadata(bucketName, objectName);
string storageClass = metadata.HttpMetadata["x-oss-storage-class"] as string;
if (storageClass != "Archive")
{
Console.WriteLine("StorageClass is {0}", storageClass);
return;
}
// Restore the Archive object.
RestoreObjectResult result = client.RestoreObject(bucketName, objectName);
Console.WriteLine("RestoreObject result HttpStatusCode : {0}", result.HttpStatusCode);
if (result.HttpStatusCode != HttpStatusCode.Accepted)
{
throw new OssException(result.RequestId + ", " + result.HttpStatusCode + " ,");
}
while (maxWaitTimeInSeconds > 0)
{
var meta = client.GetObjectMetadata(bucketName, objectName);
string restoreStatus = meta.HttpMetadata["x-oss-restore"] as string;
if (restoreStatus != null && restoreStatus.StartsWith("ongoing-request=\"false\"", StringComparison.InvariantCultureIgnoreCase))
{
break;
}
Thread.Sleep(1000);
// The maximum wait time decreases by 1 second.
maxWaitTimeInSeconds--;
}
if (maxWaitTimeInSeconds == 0)
{
Console.WriteLine("RestoreObject is timeout. ");
throw new TimeoutException();
}
else
{
Console.WriteLine("RestoreObject is successful. ");
}
Restaurar un objeto Cold Archive
A continuación se muestra un ejemplo de código para restaurar un objeto Cold Archive:
using Aliyun.OSS;
using Aliyun.OSS.Model;
using Aliyun.OSS.Common;
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com.
var endpoint = "yourEndpoint";
// 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.
var accessKeyId = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_ID");
var accessKeySecret = Environment.GetEnvironmentVariable("OSS_ACCESS_KEY_SECRET");
// Specify the name of the bucket.
var bucketName = "examplebucket";
// Specify the full path of the Cold Archive object. Do not include the bucket name in the full path.
var objectName = "yourObjectName";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
const string region = "cn-hangzhou";
// Create a ClientConfiguration instance and modify the default parameters based on your requirements.
var conf = new ClientConfiguration();
// Use the signature algorithm V4.
conf.SignatureVersion = SignatureVersion.V4;
// Create an OSSClient instance.
var client = new OssClient(endpoint, accessKeyId, accessKeySecret, conf);
client.SetRegion(region);
// Restore the Cold Archive object.
var request = new RestoreObjectRequest(bucketName, objectName);
// Specify the restoration priority of the Cold Archive object.
// TierType.Expedited: The object is restored within 1 hour.
// TierType.Standard: The object is restored within 2 to 5 hours.
// TierType.Bulk: The object is restored within 5 to 12 hours.
// Configure restoration parameters. For example, you can set the restoration priority of the object to Expedited, and set the duration for which the object can remain in the restored state to two days.
// The Days parameter indicates the duration for which the object can remain in the restored state. The default value is 1. This parameter applies to Archive and Cold Archive objects.
// The Tier parameter indicates the restoration priority of the object and applies only to Cold Archive objects.
request.Days = 2;
request.Tier = TierType.Bulk;
RestoreObjectResult result = client.RestoreObject(request);
Console.WriteLine("RestoreObject result HttpStatusCode : {0}", result.HttpStatusCode);
Referencias
El código de ejemplo completo para restaurar objetos Archive y Cold Archive está disponible en GitHub.
Para obtener más información sobre la API que permite restaurar objetos Archive y Cold Archive, consulte RestoreObject.