C++生命周期

注意事项

• 本文以华东1（杭州）外网Endpoint为例。如果您希望通过与OSS同地域的其他阿里云产品访问OSS，请使用内网Endpoint。关于OSS支持的Region与Endpoint的对应关系，请参见访问域名和数据中心。
• 本文以OSS域名新建OSSClient为例。如果您希望通过自定义域名、STS等方式新建OSSClient，请参见新建OssClient。

• 要设置生命周期规则，您必须有oss:PutBucketLifecycle权限；要查看生命周期规则，您必须有oss:GetBucketLifecycle规则；要清空生命周期规则，您必须有oss:DeleteBucketLifecycle权限。具体操作，请参见为RAM用户授权自定义的权限策略。

设置生命周期规则

以下代码用于为examplebucket设置基于最后一次修改时间策略的生命周期规则，规则中指定按照标签匹配和前缀匹配的方式执行转换文件存储类型及删除操作。

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /*初始化OSS账号信息。*/
    
    /*yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    /*填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";

    /*初始化网络等资源。*/
    InitializeSdk();

    ClientConfiguration conf;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);

    SetBucketLifecycleRequest request(BucketName);
    std::string date("2022-10-12T00:00:00.000Z");

    /*设置标签。*/
    Tagging tagging;
    tagging.addTag(Tag("key1", "value1"));
    tagging.addTag(Tag("key2", "value2"));

    /*指定生命周期规则。*/
    auto rule1 = LifecycleRule();
    rule1.setID("rule1");
    rule1.setPrefix("test1/");
    rule1.setStatus(RuleStatus::Enabled);
    rule1.setExpiration(3);
    rule1.setTags(tagging.Tags());

    /*指定过期时间。*/
    auto rule2 = LifecycleRule();
    rule2.setID("rule2");
    rule2.setPrefix("test2/");
    rule2.setStatus(RuleStatus::Disabled);
    rule2.setExpiration(date);

    /*rule3为针对版本控制状态下的Bucket的生命周期规则。*/
    auto rule3 = LifecycleRule();
    rule3.setID("rule3");
    rule3.setPrefix("test3/");
    rule3.setStatus(RuleStatus::Disabled);

    /*设置Object距其最后修改时间365天之后自动转为归档类型。*/  
    auto transition = LifeCycleTransition();  
    transition.Expiration().setDays(365);
    transition.setStorageClass(StorageClass::Archive);
    rule3.addTransition(transition);

    /*设置自动移除过期删除标记。*/
    rule3.setExpiredObjectDeleteMarker(true);

    /*设置非当前版本的Object距最后修改时间10天之后转为低频访问类型。*/
    auto transition1 = LifeCycleTransition();  
    transition1.Expiration().setDays(10);
    transition1.setStorageClass(StorageClass::IA);

    /*设置非当前版本的Object距最后修改时间20天之后转为归档类型。*/
    auto transition2 = LifeCycleTransition();  
    transition2.Expiration().setDays(20);
    transition2.setStorageClass(StorageClass::Archive);

    /*设置Object在其成为非当前版本30天之后删除。*/
    auto expiration  = LifeCycleExpiration(30);
    rule3.setNoncurrentVersionExpiration(expiration);

    LifeCycleTransitionList noncurrentVersionStorageTransitions{transition1, transition2};
    rule3.setNoncurrentVersionTransitionList(noncurrentVersionStorageTransitions);

    /*设置生命周期规则。*/
    LifecycleRuleList list{rule1, rule2, rule3};
    request.setLifecycleRules(list);
    auto outcome = client.SetBucketLifecycle(request);

    if (!outcome.isSuccess()) {
        /*异常处理 */
        std::cout << "SetBucketLifecycle fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        return -1;
    }

    /*释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

查看生命周期规则

以下代码用于查看examplebucket存储空间的生命周期规则。

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;
std::string ToStorageClassName(const StorageClass& storageClass) {
    switch (storageClass) {
        case StorageClass::Standard:
            return "Standard";
        case StorageClass::IA:
            return "IA";
        case StorageClass::Archive:
            return "Archive";
        case StorageClass::ColdArchive:
            return "ColdArchive";
        default:
            return "Unknown";
    }
}
int main(void)
{
    /*初始化OSS账号信息。*/
    
    /*yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    /*填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";
  
    /*初始化网络等资源。*/
    InitializeSdk();
  
    ClientConfiguration conf;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);
  
    /*查看生命周期规则。*/
    auto outcome = client.GetBucketLifecycle(BucketName);
    if (outcome.isSuccess()) {
        std::cout << "GetBucketLifecycle success," << std::endl;
        for (auto const rule : outcome.result().LifecycleRules()) {
            std::cout << "rule:" << rule.ID() << "," << rule.Prefix() << "," << rule.Status() << ","
            "hasExpiration:" << rule.hasExpiration() << "," <<
            "hasTransitionList:" << rule.hasTransitionList() << "," << std::endl;
            auto taglist = rule.Tags();
            for (const auto& tag : taglist)
            {
                std::cout << "GetBucketLifecycle tag success, Key:" 
                << tag.Key() << "; Value:" << tag.Value() << std::endl;
            }
            /*查看是否自动删除过期删除标记。*/
            if (rule.ExpiredObjectDeleteMarker()) {
                std::cout << "rule expired delete marker: " << rule.ExpiredObjectDeleteMarker() << std::endl;
            }
            /*查看非当前版本Object存储类型转换规则。*/
            if (rule.hasNoncurrentVersionTransitionList()) {
                for (auto const lifeCycleTransition : rule.NoncurrentVersionTransitionList()) {
                    std::cout << "rule noncurrent versions trans days:" << std::to_string(lifeCycleTransition.Expiration().Days()) <<
                    " trans storage class: " << ToStorageClassName(lifeCycleTransition.StorageClass()) << std::endl;    
                }
            }
            /*查看非当前版本Object过期规则。*/
            if (rule.hasNoncurrentVersionExpiration()) {
                std::cout << "rule noncurrent versions expiration days:" << rule.NoncurrentVersionExpiration().Days() << std::endl;
            }
        }
    }
    else {
        /*异常处理。*/
        std::cout << "GetBucketLifecycle fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        return -1;
    }
    /* 释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

清空生命周期规则

以下代码用于清空examplebucket存储空间的生命周期规则。

#include <alibabacloud/oss/OssClient.h>

using namespace AlibabaCloud::OSS;

int main(void)
{
    /*初始化OSS账号信息。*/
    
    /*yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    /*填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";
  
    /*初始化网络等资源。*/
    InitializeSdk();
  
    ClientConfiguration conf;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);
  
    /*清空生命周期规则。*/
    DeleteBucketLifecycleRequest request(BucketName);
    auto outcome = client.DeleteBucketLifecycle(request);
    if (!outcome.isSuccess()) {
        /*异常处理 */
        std::cout << "DeleteBucketLifecycle fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        return -1;
    }
    /*释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

相关文档

• 关于生命周期规则的完整示例代码，请参见GitHub示例。

• 关于设置生命周期规则的API接口说明，请参见PutBucketLifecycle。

• 关于查看生命周期规则的API接口说明，请参见GetBucketLifecycle。

• 关于清空生命周期规则的API接口说明，请参见DeleteBucketLifecycle。