Use CompleteMultipartUpload with an AWS SDK - AWS SDK Code Examples

There are more AWS SDK examples available in the AWS Doc SDK Examples GitHub repo.

Use CompleteMultipartUpload with an AWS SDK

The following code example shows how to use CompleteMultipartUpload.

Java
SDK for Java 2.x
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

Complete a multipart upload in a directory bucket.


import com.example.s3.util.S3DirectoryBucketUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.CompleteMultipartUploadRequest;
import software.amazon.awssdk.services.s3.model.CompleteMultipartUploadResponse;
import software.amazon.awssdk.services.s3.model.CompletedMultipartUpload;
import software.amazon.awssdk.services.s3.model.CompletedPart;
import software.amazon.awssdk.services.s3.model.S3Exception;

import java.io.IOException;
import java.nio.file.Path;
import java.util.List;

import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucketMultipartUpload;
import static com.example.s3.util.S3DirectoryBucketUtils.createS3Client;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteAllObjectsInDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.getFilePath;
import static com.example.s3.util.S3DirectoryBucketUtils.multipartUploadForDirectoryBucket;


    /**
     * This method completes the multipart upload request by collating all the
     * upload parts.
     *
     * @param s3Client    The S3 client used to interact with S3
     * @param bucketName  The name of the directory bucket
     * @param objectKey   The key (name) of the object to be uploaded
     * @param uploadId    The upload ID used to track the multipart upload
     * @param uploadParts The list of completed parts
     * @return True if the multipart upload is successfully completed, false
     *         otherwise
     */
    public static boolean completeDirectoryBucketMultipartUpload(S3Client s3Client, String bucketName, String objectKey,
            String uploadId, List<CompletedPart> uploadParts) {
        try {
            CompletedMultipartUpload completedMultipartUpload = CompletedMultipartUpload.builder()
                    .parts(uploadParts)
                    .build();
            CompleteMultipartUploadRequest completeMultipartUploadRequest = CompleteMultipartUploadRequest.builder()
                    .bucket(bucketName)
                    .key(objectKey)
                    .uploadId(uploadId)
                    .multipartUpload(completedMultipartUpload)
                    .build();

            CompleteMultipartUploadResponse response = s3Client.completeMultipartUpload(completeMultipartUploadRequest);
            logger.info("Multipart upload completed. ETag: {}", response.eTag());
            return true;
        } catch (S3Exception e) {
            logger.error("Failed to complete multipart upload: {} - Error code: {}", e.awsErrorDetails().errorMessage(),
                    e.awsErrorDetails().errorCode(), e);
            return false;
        }
    }