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Upload objects in multiple parts

Pragya Keshap answered on February 13, 2023 Popularity 1/10 Helpfulness 1/10

answer Upload objects in multiple parts

Upload objects in multiple parts

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        // First create a multipart upload and get the upload id
        CreateMultipartUploadRequest createMultipartUploadRequest = CreateMultipartUploadRequest.builder()
                .bucket(bucketName)
                .key(key)
                .build();

        CreateMultipartUploadResponse response = s3.createMultipartUpload(createMultipartUploadRequest);
        String uploadId = response.uploadId();
        System.out.println(uploadId);

        // Upload all the different parts of the object
        UploadPartRequest uploadPartRequest1 = UploadPartRequest.builder()
                .bucket(bucketName)
                 .key(key)
                .uploadId(uploadId)
                .partNumber(1).build();

        String etag1 = s3.uploadPart(uploadPartRequest1, RequestBody.fromByteBuffer(getRandomByteBuffer(5 * mB))).eTag();

        CompletedPart part1 = CompletedPart.builder().partNumber(1).eTag(etag1).build();

        UploadPartRequest uploadPartRequest2 = UploadPartRequest.builder().bucket(bucketName).key(key)
                .uploadId(uploadId)
                .partNumber(2).build();
        String etag2 = s3.uploadPart(uploadPartRequest2, RequestBody.fromByteBuffer(getRandomByteBuffer(3 * mB))).eTag();
        CompletedPart part2 = CompletedPart.builder().partNumber(2).eTag(etag2).build();


        // Finally call completeMultipartUpload operation to tell S3 to merge all uploaded
        // parts and finish the multipart operation.
        CompletedMultipartUpload completedMultipartUpload = CompletedMultipartUpload.builder()
                .parts(part1, part2)
                .build();

        CompleteMultipartUploadRequest completeMultipartUploadRequest =
                CompleteMultipartUploadRequest.builder()
                        .bucket(bucketName)
                        .key(key)
                        .uploadId(uploadId)
                        .multipartUpload(completedMultipartUpload)
                        .build();

        s3.completeMultipartUpload(completeMultipartUploadRequest);

https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java upload

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Contributed on Feb 13 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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