Lifecycle rules can take effect on objects configured with specified prefixes or tags. You can also specify a combination of prefixes and tags as conditions for lifecycle rules to take effect.

Note If you configure tag conditions, the rule applies only to objects that meet the tag key and value conditions. If a prefix and multiple object tags are configured in a rule, the rule applies only to objects that match the prefix and object tag conditions.

Add tagging configurations to a lifecycle rule

The following code provides an example on how to add tagging configurations to a lifecycle rule:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* Initialize the information about the account that is used to access OSS. */
    /* The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. */
    std::string AccessKeyId = "yourAccessKeyId";
    std::string AccessKeySecret = "yourAccessKeySecret";
    /* 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. */
    std::string Endpoint = "yourEndpoint";
    /* Specify the name of the bucket. Example: examplebucket. */
    std::string BucketName = "examplebucket";

    /* Initialize resources such as networks. */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    SetBucketLifecycleRequest request(BucketName);

    /* Configure the tagging configurations that you want to add. */
    Tagging tagging;
    tagging.addTag(Tag("key1", "value1"));
    tagging.addTag(Tag("key2", "value2"));

    /* Specify the lifecycle rule to which you want to add the tagging configurations. */
    auto rule1 = LifecycleRule();
    rule1.setID("rule1");
    rule1.setPrefix("test1/");
    rule1.setStatus(RuleStatus::Enabled);
    rule1.setExpiration(3);
    rule1.setTags(tagging.Tags());

    /* Add the tagging configurations to the lifecycle rule. */
    LifecycleRuleList list{rule1};
    request.setLifecycleRules(list);
    auto outcome = client.SetBucketLifecycle(request);

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

    /* Release resources such as networks. */
    ShutdownSdk();
    return 0;
}

Query tagging configurations in a lifecycle rule

The following code provides an example on how to query tagging configurations in a lifecycle rule:
#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* Initialize the information about the account that is used to access OSS. */
    /* The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. */
    std::string AccessKeyId = "yourAccessKeyId";
    std::string AccessKeySecret = "yourAccessKeySecret";
    /* 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. */
    std::string Endpoint = "yourEndpoint";
    /* Specify the name of the bucket. Example: examplebucket. */
    std::string BucketName = "examplebucket";

    /* Initialize resources such as networks. */
    InitializeSdk();

    ClientConfiguration conf;
    OssClient client(Endpoint, AccessKeyId, AccessKeySecret, conf);

    /* Query the specified lifecycle rule and the tagging configurations in the rule. */
    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;
          }
        }
    }
    else {
        /* Handle exceptions. */
        std::cout << "GetBucketLifecycle fail" <<
        ",code:" << outcome.error().Code() <<
        ",message:" << outcome.error().Message() <<
        ",requestId:" << outcome.error().RequestId() << std::endl;
        ShutdownSdk();
        return -1;
    }

    /* Release resources such as networks. */
    ShutdownSdk();
    return 0;
}

References

  • For the complete sample code that is used to configure lifecycle rules for a bucket, visit GitHub.
  • For more information about the API operation that you can call to configure lifecycle rules, see PutBucketLifecycle.
  • For more information about the API operation that you can call to query lifecycle rules, see GetBucketLifecycle.