RestoreArchivedObject.java

// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-s3-developer-guide/blob/master/LICENSE-SAMPLECODE.)

import java.io.IOException;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.RestoreObjectRequest;

public class RestoreArchivedObject {

    public static void main(String[] args) throws IOException {
        String clientRegion = "*** Client region ***";
        String bucketName = "*** Bucket name ***";
        String keyName = "*** Object key ***";

        try {
            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withCredentials(new ProfileCredentialsProvider())
                    .withRegion(clientRegion)
                    .build();

            // Create and submit a request to restore an object from Glacier for two days.
            RestoreObjectRequest requestRestore = new RestoreObjectRequest(bucketName, keyName, 2);
            s3Client.restoreObjectV2(requestRestore);
    
            // Check the restoration status of the object.
            ObjectMetadata response = s3Client.getObjectMetadata(bucketName, keyName);
            Boolean restoreFlag = response.getOngoingRestore();
            System.out.format("Restoration status: %s.\n",
                    restoreFlag ? "in progress" : "not in progress (finished or failed)");
        }
        catch(AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process 
            // it, so it returned an error response.
            e.printStackTrace();
        }
        catch(SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client
            // couldn't parse the response from Amazon S3.
            e.printStackTrace();
        }
    }
}