S3 Complete Multipart Upload

Updated on 01 Jun 2023

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POSThttps://s3.<your-region>.backblazeb2.com/<your-bucket-name>/<your-key>?uploadId=

Completes a multipart upload by assembling previously uploaded parts.

Encryption:
The completed object uses the encryption selected when the multipart upload was initiated.

AUTHORIZATION AWS Signature

This request is using AWS Signature from collection Backblaze B2 Cloud Storage S3 Compatible API.

PARAMS

uploadId

An Upload ID obtained from S3 Create Multipart Upload

PATH VARIABLES

bucket	Required. The name of the bucket
key	Required. Key of the object to be written.

Body (raw XML)

<CompleteMultipartUpload xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
   <Part>
      <ETag>3f83ebfa030f57196f30cd07c03fb632</ETag>
      <PartNumber>1</PartNumber>
   </Part>
   <Part>
      <ETag>196f30cd07c03fb6323f83ebfa030f57</ETag>
      <PartNumber>2</PartNumber>
   </Part>
   ...
</CompleteMultipartUpload>

Example Request

curl --location 'https://s3.<your-region>.backblazeb2.com/my-bucket-name-metadaddy/object-1?uploadId=4_z6145af89f355ac2f74ed0c1b_f2006887251b080dd_d20220128_m232720_c004_v0402000_t0046' \
--data '<CompleteMultipartUpload xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
   <Part>
      <ETag>85f30635602dc09bd85957a6e82a2c21</ETag>
      <PartNumber>1</PartNumber>
   </Part>
   <Part>
      <ETag>2dc09bd8595785f3063560a6e82a2c21</ETag>
      <PartNumber>2</PartNumber>
   </Part>
   <Part>
      <ETag>7a6e82a2c2185f30635602dc09bd8595</ETag>
      <PartNumber>3</PartNumber>
   </Part>
</CompleteMultipartUpload>'

Example Response

200 OK

Body

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<CompleteMultipartUploadResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <Bucket>my-bucket-name</Bucket>
    <ETag>"3729bf569924c845dfe90bfe6281a9ff-1"</ETag>
    <Key>object-1</Key>
    <Location>/my-bucket-name/object-1</Location>
</CompleteMultipartUploadResult>

Headers (9)

Cache-Control	max-age=0, no-cache, no-store
x-amz-request-id	56aa38410aaebdd
x-amz-version-id	4_z6145af89f355ac2f74ed0c1b_f416a807037a7ee2a_d20220128_m231233_c004_v0402000_t0056
x-amz-id-2	aMa41BGZMOZMztjUfY9JmpzRnZLRjZmIQ
Content-Length	353
Content-Type	application/xml
Date	Fri, 28 Jan 2022 23:14:48 GMT
Keep-Alive	timeout=5
Connection	keep-alive

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S3 Create Multipart Upload