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:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.common.utils.DateUtil;
import com.aliyun.oss.model.LifecycleRule;
import com.aliyun.oss.model.SetBucketLifecycleRequest;
import java.util.HashMap;
import java.util.Map;

public class Demo {
    public static void main(String[] args) throws Throwable {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify the actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to access 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. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // Create a request by using SetBucketLifecycleRequest.
            SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);

            // Specify the rule IDs and the object prefixes and tags to match the rules. 
            String ruleId0 = "rule0";
            String matchPrefix0 = "A0/";
            Map<String, String> matchTags0 = new HashMap<String, String>();
            matchTags0.put("key0", "value0");


            String ruleId1 = "rule1";
            String matchPrefix1 = "A1/";
            Map<String, String> matchTags1 = new HashMap<String, String>();
            matchTags1.put("key1", "value1");


            String ruleId2 = "rule2";
            String matchPrefix2 = "A2/";

            String ruleId3 = "rule3";
            String matchPrefix3 = "A3/";

            // Set the expiration date to three days after the last modified time. 
            LifecycleRule rule = new LifecycleRule(ruleId0, matchPrefix0, LifecycleRule.RuleStatus.Enabled, 3);
            rule.setTags(matchTags0)
            request.AddLifecycleRule(rule);

            // Specify that objects that are created before the specified date expire. 
            rule = new LifecycleRule(ruleId1, matchPrefix1, LifecycleRule.RuleStatus.Enabled);
            rule.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
            rule.setTags(matchTags1);
            request.AddLifecycleRule(rule);

            // Set the expiration date of parts to three days later. 
            rule = new LifecycleRule(ruleId2, matchPrefix2, LifecycleRule.RuleStatus.Enabled);
            LifecycleRule.AbortMultipartUpload abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
            abortMultipartUpload.setExpirationDays(3);
            rule.setAbortMultipartUpload(abortMultipartUpload);
            request.AddLifecycleRule(rule);

            // Specify that parts that are generated before the specified date expire. 
            rule = new LifecycleRule(ruleId3, matchPrefix3, LifecycleRule.RuleStatus.Enabled);
            abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
            abortMultipartUpload.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
            rule.setAbortMultipartUpload(abortMultipartUpload);
            request.AddLifecycleRule(rule);

            ossClient.setBucketLifecycle(request);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Query the tagging configurations in a lifecycle rule

The following code provides an example on how to query tagging configurations in a lifecycle rule:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.LifecycleRule;
import java.util.List;

public class Demo {
    public static void main(String[] args) throws Throwable {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify the actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to access 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. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // Query the lifecycle rules that are configured for the bucket. 
            List<LifecycleRule> rules = ossClient.getBucketLifecycle(bucketName);

            // Query the specified lifecycle rule. 
            for (LifecycleRule rule1 : rules) {
                // Query the rule ID. 
                System.out.println("rule id: " + rule1.getId());

                // Query the prefixes in the names of the objects that match the rule. 
                System.out.println("rule prefix: " + rule1.getPrefix());

                // Query the tags of the objects that match the rule. 
                if (rule1.hasTags()) {
                    System.out.println("rule tagging: "+ rule1.getTags().toString());
                }

                // Query the number of days after which the objects that match the rule expire. 
                if (rule1.hasExpirationDays()) {
                    System.out.println("rule expiration days: " + rule1.getExpirationDays());
                }

                // Query the date on which the objects that match the rule expire. 
                if (rule1.hasCreatedBeforeDate()) {
                    System.out.println("rule expiration create before days: " + rule1.getCreatedBeforeDate());
                }

                // Query the rules based on which the parts that match the rules expire. 
                if(rule1.hasAbortMultipartUpload()) {
                    if(rule1.getAbortMultipartUpload().hasExpirationDays()) {
                        System.out.println("rule abort uppart days: " + rule1.getAbortMultipartUpload().getExpirationDays());
                    }

                    if (rule1.getAbortMultipartUpload().hasCreatedBeforeDate()) {
                        System.out.println("rule abort uppart create before date: " + rule1.getAbortMultipartUpload().getCreatedBeforeDate());
                    }
                }
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}