Torch Object Storage
Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceJavaObject InterfaceManage ObjectRestoring Objects (Java SDK)
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Restoring Objects (Java SDK)
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You need to restore files in Cold Archive before reading them. This article describes how to restore Cold Archive objects using the TOS Java SDK.
Category
- Starting from version 2.6.0, the TOS Java SDK supports restoring Cold Archive objects.
- Cold Archive objects cannot be read directly; you must restore the object before performing any read operations. Before restoring a Cold Archive object, you need to have the RestoreObject permission.
- After a Cold Archive object is restored, TOS generates a temporary copy in the standard storage class for you to access. This copy will automatically be deleted after the validity period ends.
- After the object is restored, you can also use the RestoreObject interface to extend the validity period of the restored object.
Sample Code
The following code demonstrates how to use the SDK's restoreObject interface to restore the object "object-example" in the bucket "bucket-example".
import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.comm.common.TierType;
import com.volcengine.tos.model.object.RestoreJobParameters;
import com.volcengine.tos.model.object.RestoreObjectInput;
import com.volcengine.tos.model.object.RestoreObjectOutput;
public class RestoreObjectExample {
public static void main(String[] args) {
String endpoint = "your endpoint";
String region = "your region";
String accessKey = System.getenv("TOS_ACCESS_KEY");
String secretKey = System.getenv("TOS_SECRET_KEY");
String bucketName = "bucket-example";
String objectKey = "example_dir/example_object.txt";
int days = 1;
TierType type = TierType.TIER_STANDARD;
TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);
try{
RestoreObjectInput input = new RestoreObjectInput().setBucket(bucketName).setKey(objectKey)
.setRestoreJobParameters(new RestoreJobParameters().setTier(type))
.setDays(days);
RestoreObjectOutput output = tos.restoreObject(input);
System.out.println(output.getRequestInfo().getRequestId());
System.out.println("restoreObject succeed.");
} catch (TosClientException e) {
System.out.println("restoreObject failed");
System.out.println("Message: " + e.getMessage());
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
} catch (TosServerException e) {
System.out.println("restoreObject failed");
System.out.println("StatusCode: " + e.getStatusCode());
System.out.println("RequestID: " + e.getRequestID());
} catch (Throwable t) {
System.out.println("restoreObject failed");
System.out.println("unexpected exception, message: " + t.getMessage());
}
}
}
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Last updated: 2025.09.22 11:34:17
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