Restoring a Specific Cold Object Version

You can call ObsClient.restoreObject to restore a Cold object version by specifying versionId.

This example specifies versionId to restore Cold object destobjectname in destbucketname as a Standard object.

The example code is as follows:

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
// Create an ObsClient instance.
ObsClient obsClient = new ObsClient(ak, sk, endPoint);

RestoreObjectRequest request = new RestoreObjectRequest("bucketname", "objectname", 1);
// Restore a versioned object at an expedited speed.
request.setRestoreTier(RestoreTierEnum.EXPEDITED);
request.setVersionId("versionid");
obsClient.restoreObject(request);

• To handle the error codes possibly returned during the operation, see OBS Server-Side Error Codes.