Object Storage Service:Regras de ciclo de vida (OSS SDK para C# 1.0)

Observações

• Antes de configurar regras de ciclo de vida com base na data da última modificação dos objetos, familiarize-se com esse recurso. Para mais informações, consulte Lifecycle rules based on the last modified time.

• Neste tópico, utiliza-se o endpoint público da região china (Hangzhou). Para acessar o OSS a partir de outros service Alibaba Cloud na mesma região, use um endpoint interno. Para mais informações sobre regiões e endpoints do OSS, consulte Regions and endpoints.

• Este tópico demonstra como crie uma instância OSSClient com um endpoint do OSS. Para configurações alternativas, como usar um domínio personalizado ou autenticar com credenciais do Security Token Service (STS), consulte Initialization (C# SDK V1).

• Para configure regras de ciclo de vida, você precisa ter a permissão oss:PutBucketLifecycle. Para consultar regras de ciclo de vida, você precisa ter a permissão oss:GetBucketLifecycle. Para limpar regras de ciclo de vida, você precisa ter a permissão oss:DeleteBucketLifecycle. Para mais informações, consulte Grant a custom policy.

Configure regras de ciclo de vida para um bucket

O código de exemplo a seguir mostra como configure regras de ciclo de vida com base na data da última modificação para um bucket chamado examplebucket. Para modifique regras de ciclo de vida, siga as instruções descritas em How do I change the configurations of one or more lifecycle rules?

using Aliyun.OSS;
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 = "https://oss-cn-hangzhou.aliyuncs.com";
// 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 bucket name. Example: examplebucket. 
var bucketName = "examplebucket";
// 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
{
    var setBucketLifecycleRequest = new SetBucketLifecycleRequest(bucketName);
    // Create the first lifecycle rule. 
    LifecycleRule lcr1 = new LifecycleRule()
    {
        ID = "delete obsoleted files",
        Prefix = "obsoleted/",
        Status = RuleStatus.Enabled,
        ExpriationDays = 3,
        Tags = new Tag[1]
    };
    // Specify a tag for the rule. 
    var tag1 = new Tag
    {
        Key = "project",
        Value = "projectone"
    };

    lcr1.Tags[0] = tag1;

    // Create the second lifecycle rule. 
    LifecycleRule lcr2 = new LifecycleRule()
    {
        ID = "delete temporary files",
        Prefix = "temporary/",
        Status = RuleStatus.Enabled,
        ExpriationDays = 20,
        Tags = new Tag[1]         
    };
    // Specify a tag for the rule. 
    var tag2 = new Tag
    {
        Key = "user",
        Value = "jsmith"
    };
    lcr2.Tags[0] = tag2;

    // Specify that parts expire 30 days after they are last modified. 
    lcr2.AbortMultipartUpload = new LifecycleRule.LifeCycleExpiration()
    {
        Days = 30
    };

    LifecycleRule lcr3 = new LifecycleRule();
    lcr3.ID = "only NoncurrentVersionTransition";
    lcr3.Prefix = "test1";
    lcr3.Status = RuleStatus.Enabled;
    lcr3.NoncurrentVersionTransitions = new LifecycleRule.LifeCycleNoncurrentVersionTransition[2]
    {
        // Specify that the storage classes of the previous versions of objects are converted to IA 90 days after they are last modified. 
        new LifecycleRule.LifeCycleNoncurrentVersionTransition(){
            StorageClass = StorageClass.IA,
            NoncurrentDays = 90
        },
        // Specify that the storage classes of the previous versions of objects are converted to Archive 180 days after they are last modified. 
        new LifecycleRule.LifeCycleNoncurrentVersionTransition(){
            StorageClass = StorageClass.Archive,
            NoncurrentDays = 180
        }
    };
    setBucketLifecycleRequest.AddLifecycleRule(lcr1);
    setBucketLifecycleRequest.AddLifecycleRule(lcr2);
    setBucketLifecycleRequest.AddLifecycleRule(lcr3);

    // Configure lifecycle rules. 
    client.SetBucketLifecycle(setBucketLifecycleRequest);
    Console.WriteLine("Set bucket:{0} Lifecycle succeeded ", bucketName);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
    Console.WriteLine("Failed with error info: {0}", ex.Message);
}

Consultar as regras de ciclo de vida de um bucket

O código de exemplo a seguir mostra como consultar as regras de ciclo de vida configuradas para o examplebucket:

using Aliyun.OSS;
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 = "https://oss-cn-hangzhou.aliyuncs.com";
// 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 bucket name. Example: examplebucket. 
var bucketName = "examplebucket";
// 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
{
    // Query the lifecycle rules of the bucket. 
    var rules = client.GetBucketLifecycle(bucketName);
    Console.WriteLine("Get bucket:{0} Lifecycle succeeded ", bucketName);
    foreach (var rule in rules)
    {
        Console.WriteLine("ID: {0}", rule.ID);
        Console.WriteLine("Prefix: {0}", rule.Prefix);
        Console.WriteLine("Status: {0}", rule.Status);
        // Query the tags that are specified for the lifecycle rules. 
        foreach (var tag in rule.Tags)
        {
            Console.WriteLine("key:{0}, value:{1}", tag.Key, tag.Value);
        }
        // Query the expiration rule for the previous versions of objects. 
        foreach (var version in rule.NoncurrentVersionTransitions)
        {
            Console.WriteLine("expiration day:{0}, storage class:{1}", version.NoncurrentDays, version.StorageClass);
        }
        if (rule.ExpriationDays.HasValue)
            Console.WriteLine("ExpirationDays: {0}", rule.ExpriationDays);
    }
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
    Console.WriteLine("Failed with error info: {0}", ex.Message);
}

Exclua todas as regras de ciclo de vida de um bucket

O código de exemplo a seguir mostra como exclua as regras de ciclo de vida configuradas para o examplebucket. Para exclua uma ou mais regras de ciclo de vida, siga as instruções descritas em How do I delete one or more lifecycle rules?

using Aliyun.OSS;
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 = "https://oss-cn-hangzhou.aliyuncs.com";
// 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 bucket name. Example: examplebucket. 
var bucketName = "examplebucket";
// 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
{
    // Delete the lifecycle rules. 
    client.DeleteBucketLifecycle(bucketName);
    Console.WriteLine("Delete bucket:{0} Lifecycle succeeded ", bucketName);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}
catch (Exception ex)
{
    Console.WriteLine("Failed with error info: {0}", ex.Message);
}

Referências

• Para acessar o código de exemplo completo usado para gerencie regras de ciclo de vida, visite o GitHub.

• Para mais informações sobre a operação de API usada para configure regras de ciclo de vida, consulte PutBucketLifecycle.

• Para detalhes sobre a operação de API usada para consultar regras de ciclo de vida, consulte GetBucketLifecycle.

• Para saber mais sobre a operação de API usada para exclua regras de ciclo de vida, consulte DeleteBucketLifecycle.