Restore Archive, Cold Archive, and Deep Cold Archive objects - Object Storage Service

If you do not enable real-time access of Archive objects, you can access Archive objects only after you restore them. Real-time access of Archive objects is not supported by Cold Archive and Deep Cold Archive objects. You can access Cold Archive and Deep Cold Archive objects only after you restore them. In most cases, several minutes are required to restore an Archive object, several hours are required to restore a Cold Archive object, and 12 to 48 hours are required to restore a Deep Cold Archive object. The preceding restoration time is for reference. The restoration time may vary based on actual scenarios. This topic describes how to restore Archive, Cold Archive, and Deep Cold Archive objects.

Usage notes

You can call the RestoreObject operation only on Archive, Cold Archive, and Deep Cold Archive objects.
In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS regions and endpoints, see Regions, endpoints and open ports.
In this topic, access credentials are obtained from environment variables. For more information about how to configure access credentials, see Configure access credentials.
In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Create an OSSClient instance.
To restore an object, you must have the oss:RestoreObject permission. For more information, see Attach a custom policy to a RAM user.

Restore an Archive object

The following sample code provides an example on how to restore an Archive object:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full path of the Archive object. Do not include the bucket name in the full path. 
        String objectName = "exampledir/object";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            ObjectMetadata objectMetadata = ossClient.getObjectMetadata(bucketName, objectName);

            // Check whether the object is an Archive object. 
            StorageClass storageClass = objectMetadata.getObjectStorageClass();
            if (storageClass == StorageClass.Archive) {
                // Restore the object. 
                ossClient.restoreObject(bucketName, objectName);

                // Specify the time to wait for the object to be restored. 
                do {
                    Thread.sleep(1000);
                    objectMetadata = ossClient.getObjectMetadata(bucketName, objectName);
                } while (!objectMetadata.isRestoreCompleted());
            }

            // Query the restored object. 
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            ossObject.getObjectContent().close();
        } 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();
            }
        }
    }
}

Restore a Cold Archive object

The following sample code provides an example on how to restore a Cold Archive object:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full path of the Cold Archive object. Do not include the bucket name in the full path. 
        String objectName = "exampledir/object";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {                    
            // Specify the restoration mode of the Cold Archive object. 
            // RestoreTier.RESTORE_TIER_EXPEDITED specifies that the object is restored within 1 hour. 
            // RestoreTier.RESTORE_TIER_STANDARD specifies that the object is restored within 2 to 5 hours. 
            // RestoreTier.RESTORE_TIER_BULK specifies that the object is restored within 5 to 12 hours. 
           RestoreJobParameters jobParameters = new RestoreJobParameters(RestoreTier.RESTORE_TIER_BULK);

            // Configure parameters. For example, set the restoration mode of the object to Standard, and set the duration for which the object remains in the restored state to 2 days. 
            // The first parameter specifies the duration (days) for which the object remains in the restored state. The default value is 1. This parameter takes effect for Archive and Cold Archive objects. 
            // jobParameters specifies the restoration mode of the object and takes effect only for Cold Archive objects. 
            RestoreConfiguration configuration = new RestoreConfiguration(2, jobParameters);

            // Initiate an object restoration request. 
            ossClient.restoreObject(bucketName, objectName, configuration);
        } 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();
            }
        }
    }
}

Restore a Deep Cold Archive object

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;

public class Demo {
    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the full path of the Deep Cold Archive object. Do not include the bucket name in the full path. 
        String objectName = "exampledir/object";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance. 
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {          
            // Configure the restoration mode. In this example, the restoration mode is RESTORE_TIER_STANDARD. 
            // RestoreTier.RESTORE_TIER_EXPEDITED specifies that the object is restored within 12 hours.             
            // RestoreTier.RESTORE_TIER_STANDARD specifies that the object is restored within 48 hours. 
            RestoreJobParameters jobParameters = new RestoreJobParameters(RestoreTier.RESTORE_TIER_STANDARD);

            // Specify the duration (days) for which the object remains in the restored state. The default value is 1. In this example, the validity period is 2 days. 
            RestoreConfiguration configuration = new RestoreConfiguration(2, jobParameters);

            // Initiate an object restoration request. 
            ossClient.restoreObject(bucketName, objectName, configuration);
        } 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();
            }
        }
    }
}

References

For the complete sample code that is used to restore objects, visit GitHub.
For more information about the API operation that you can call to restore objects, see RestoreObject.