如何解冻归档和冷归档Object - 对象存储 OSS

归档或冷归档类型的Object需要解冻（Restore）之后才能读取。本文介绍如何解冻归档和冷归档Object。

注意事项

仅归档、冷归档类型的Object支持调用RestoreObject方法。
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OSS地域和访问域名。
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。
要解冻文件，您必须有oss:RestoreObject权限。具体操作，请参见为RAM用户授权自定义的权限策略。

解冻归档Object

以下代码用于解冻归档Object：

#include <alibabacloud/oss/OssClient.h>
#include <thread>
#include <chrono>
#include <algorithm>

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";
    / *yourRegion填写Bucket所在地域对应的Region。以华东1（杭州）为例，Region填写为cn - hangzhou。 * /
    std::string Region = "yourRegion";
    /*填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";
    /*填写不包含Bucket名称在内的归档类型Object的完整路径。*/
    std::string ObjectName = "yourObjectName";
  
    /*初始化网络等资源。*/
    InitializeSdk();
    
    ClientConfiguration conf;
    conf.signatureVersion = SignatureVersionType::V4;
    /* 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);
    client.SetRegion(Region);
  
    /*解冻归档Object。*/
    auto outcome = client.RestoreObject(BucketName, ObjectName);
    /*非归档Object不能解冻。*/
    if (!outcome.isSuccess()) {
        /*异常处理。*/
        std::cout << "RestoreObject fail，code：" << outcome.error().Code() <<
        "，message：" << outcome.error().Message() <<
        "，requestId：" << outcome.error().RequestId() << std::endl;
        return -1;
    }
    std::string onGoingRestore("ongoing-request=\"false\"");
    int maxWaitTimeInSeconds = 600;
    while (maxWaitTimeInSeconds > 0)
    {
        auto meta = client.HeadObject(BucketName, ObjectName);
        std::string restoreStatus = meta.result().HttpMetaData()["x-oss-restore"];
        std::transform(restoreStatus.begin(), restoreStatus.end(), restoreStatus.begin(), ::tolower);
        if (!restoreStatus.empty() && 
        restoreStatus.compare(0, onGoingRestore.size(), onGoingRestore)==0) {
            std::cout << " success, restore status:" << restoreStatus << std::endl;
            /*成功解冻归档Object。*/
            break;
        }
        std::cout << " info, WaitTime:" << maxWaitTimeInSeconds
        << "; restore status:" << restoreStatus << std::endl;
        std::this_thread::sleep_for(std::chrono::seconds(10));
        maxWaitTimeInSeconds--;     
    }
    if (maxWaitTimeInSeconds == 0)
    {
        std::cout << "RestoreObject fail, TimeoutException" << std::endl;
    }
    /*释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

解冻冷归档Object

以下代码用于解冻冷归档Object：

#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";
    / *yourRegion填写Bucket所在地域对应的Region。以华东1（杭州）为例，Region填写为cn - hangzhou。 * /
    std::string Region = "yourRegion";
    /*填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";
    /*填写不包含Bucket名称在内的冷归档类型Object的完整路径。*/
    std::string ObjectName = "yourObjectName";

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

    ClientConfiguration conf;
    conf.signatureVersion = SignatureVersionType::V4;
    /* 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);
    client.SetRegion(Region);

    /*如果上传文件的同时指定文件存储类型为冷归档，请参考如下代码。*/
    //auto content = std::make_shared<std::stringstream>("test");
    //PutObjectRequest putRequest(BucketName, ObjectName, content);
    //putRequest.MetaData().addHeader("x-oss-storage-class", "ColdArchive");
    //auto putOutcome = client.PutObject(putRequest);

    RestoreObjectRequest request(BucketName, ObjectName);
    /*设置解冻之后保持解冻状态的天数，默认值为1天。*/
    request.setDays(2);
    /*设置解冻冷归档类型文件的优先级。TierType::Bulk表示5~12个小时之内解冻完成。*/
    request.setTierType(TierType::Bulk);
    auto outcome = client.RestoreObject(request);

    if (!outcome.isSuccess()) {
        /*异常处理。*/
        std::cout << "Delete Bucket Inventory fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
    }

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

对象存储 OSS：C++解冻文件

注意事项

解冻归档Object

解冻冷归档Object

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