Configuring a DIS Notification Policy (SDK for Java)

import com.obs.services.ObsClient;
import com.obs.services.exception.ObsException;
import com.obs.services.model.dis.DisPolicyConfiguration;
import com.obs.services.model.dis.DisPolicyRule;
import com.obs.services.model.dis.SetBucketDisPolicyRequest;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class SetBucketDisPolicy {
    public static void main(String[] args) {
        // Obtain an AK/SK pair using environment variables or import the AK/SK pair in other ways. Using hard coding may result in leakage.
        // Obtain an AK/SK pair on the management console.
        String ak = System.getenv("ACCESS_KEY_ID");
        String sk = System.getenv("SECRET_ACCESS_KEY_ID");
        // (Optional) If you are using a temporary AK/SK pair and a security token to access OBS, you are not advised to use hard coding, which may result in information leakage.
        // Obtain an AK/SK pair and a security token using environment variables or import them in other ways.
        String securityToken = System.getenv("SECURITY_TOKEN");
        // Enter the endpoint corresponding to the bucket. CN North-Beijing4 is used here as an example. Replace it with the one currently in use.
        // Obtain an endpoint using environment variables or import it in other ways.
        String endPoint = System.getenv("ENDPOINT");
        ObsConfiguration obsConfiguration = new ObsConfiguration();
        obsConfiguration.setEndPoint(endPoint);
        ObsClient obsClient = new ObsClient(ak, sk, securityToken, obsConfiguration);
        try {
            String exampleBucket = "exampleBucket";
            String ruleId = "rule-001";
            // DIS stream name
            String stream = "your_stream";
            // ID of the project to which the DIS stream belongs
            String projectId = "your_project_id";
            // IAM agency name. The agency must have the permission to access OBS. The granted permission must be DIS Administrator or DIS User.
            String agency = "your_agency";
            // Trigger event type
            List<String> events = Arrays.asList("ObjectCreated:*");
            // Object name prefix. Enter the prefix (which serves as the keyword) to filter object names. The longer the prefix string, the higher the matching accuracy.
            String prefix = "test/";
            // Object name suffix. Enter the suffix (which serves as the keyword) to filter object names. The longer the suffix string, the higher the matching accuracy.
            String suffix = ".zip";
            DisPolicyRule rule = new DisPolicyRule(ruleId, stream, projectId, events, agency);
            rule.setPrefix(prefix);
            rule.setSuffix(suffix);
            DisPolicyConfiguration config = new DisPolicyConfiguration(Collections.singletonList(rule));
            SetBucketDisPolicyRequest setRequest = new SetBucketDisPolicyRequest(exampleBucket, config);
            obsClient.setBucketDisPolicy(setRequest);
            System.out.println("SetBucketDisPolicy successfully");
        } catch (ObsException e) {
            System.out.println("SetBucketDisPolicy failed");
            // Request failed. Print the HTTP status code.
            System.out.println("HTTP Code:" + e.getResponseCode());
            // Request failed. Print the server-side error code.
            System.out.println("Error Code:" + e.getErrorCode());
            // Request failed. Print the error details.
            System.out.println("Error Message:" + e.getErrorMessage());
            // Request failed. Print the request ID.
            System.out.println("Request ID:" + e.getErrorRequestId());
            System.out.println("Host ID:" + e.getErrorHostId());
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("SetBucketDisPolicy failed");
            // Print other error information.
            e.printStackTrace();
        }
    }
}