#!/usr/bin/env bash
: '
This script tests part renumbering on an S3 remote (here configured for Minio).
On Minio:
The results confirm that if I upload parts with number 1, 4, 5 and 6,
they are renumbered to 1, 2, 3 and 4 after CompleteMultipartUpload.
Thus, specifying partNumber=4 on a GetObject/HeadObject should return
information on the part I originally uploaded with part number
On S3: not tested
Sample output (on Minio):
f07e1404cc527d494242824ded3a616b part1
78974cd4d0f622eb3426ea7cd22f5a1c part4
f9cc379f8baa61645558d9ba7e6351fa part5
1bd2383eebbac1f8e7143575ba5b1f4a part6
Upload ID: 6838b813-d0ca-400b-9d28-ec8b2b5cd004
PART 1 ETag: "f07e1404cc527d494242824ded3a616b"
PART 4 ETag: "78974cd4d0f622eb3426ea7cd22f5a1c"
PART 5 ETag: "f9cc379f8baa61645558d9ba7e6351fa"
PART 6 ETag: "1bd2383eebbac1f8e7143575ba5b1f4a"
======================================== LIST ====
{
"Parts": [
{
"PartNumber": 1,
"LastModified": "2023-04-25T10:21:54.350000+00:00",
"ETag": "\"f07e1404cc527d494242824ded3a616b\"",
"Size": 20971520
},
{
"PartNumber": 4,
"LastModified": "2023-04-25T10:21:54.350000+00:00",
"ETag": "\"78974cd4d0f622eb3426ea7cd22f5a1c\"",
"Size": 20971520
},
{
"PartNumber": 5,
"LastModified": "2023-04-25T10:21:54.350000+00:00",
"ETag": "\"f9cc379f8baa61645558d9ba7e6351fa\"",
"Size": 20971520
},
{
"PartNumber": 6,
"LastModified": "2023-04-25T10:21:54.350000+00:00",
"ETag": "\"1bd2383eebbac1f8e7143575ba5b1f4a\"",
"Size": 20971520
}
],
"ChecksumAlgorithm": "",
"Initiator": {
"ID": "02d6176db174dc93cb1b899f7c6078f08654445fe8cf1b6ce98d8855f66bdbf4",
"DisplayName": "02d6176db174dc93cb1b899f7c6078f08654445fe8cf1b6ce98d8855f66bdbf4"
},
"Owner": {
"DisplayName": "02d6176db174dc93cb1b899f7c6078f08654445fe8cf1b6ce98d8855f66bdbf4",
"ID": "02d6176db174dc93cb1b899f7c6078f08654445fe8cf1b6ce98d8855f66bdbf4"
},
"StorageClass": "STANDARD"
}
======================================== COMPLETE ====
{
"Location": "http://localhost:9000/test/upload",
"Bucket": "test",
"Key": "upload",
"ETag": "\"8e817c8ccd442f9a79c77b58fe808c43-4\""
}
======================================== LIST ====
An error occurred (NoSuchUpload) when calling the ListParts operation: The specified multipart upload does not exist. The upload ID may be invalid, or the upload may have been aborted or completed.
======================================== GET PART 4 ====
{
"AcceptRanges": "bytes",
"LastModified": "2023-04-25T10:21:59+00:00",
"ContentLength": 20971520,
"ETag": "\"8e817c8ccd442f9a79c77b58fe808c43-4\"",
"ContentRange": "bytes 62914560-83886079/83886080",
"ContentType": "binary/octet-stream",
"Metadata": {},
"PartsCount": 4
}
1bd2383eebbac1f8e7143575ba5b1f4a get-part4
Conclusions:
- Parts are indeed renumbered with consecutive numbers
- ListParts only applies to multipart uploads in progress,
it cannot be used once the multipart upload has been completed
'
export AWS_ACCESS_KEY_ID=1D8Pk2k4oQSoh1BU
export AWS_SECRET_ACCESS_KEY=4B46SR8U7FUgY0raB8Zuxg1NLyLTvbNV
function aws { command aws --endpoint-url http://localhost:9000 $@ ; }
aws --version
aws s3 mb s3://test
for NUM in 1 4 5 6; do
dd if=/dev/urandom of=part$NUM bs=1M count=10
done
md5sum part*
UPLOAD=$(aws s3api create-multipart-upload --bucket test --key 'upload' | jq -r ".UploadId")
echo "Upload ID: $UPLOAD"
PARTS=""
for NUM in 1 4 5 6; do
ETAG=$(aws s3api upload-part --bucket test --key 'upload' --part-number $NUM \
--body "part$NUM" --upload-id "$UPLOAD" | jq -r ".ETag")
echo "PART $NUM ETag: $ETAG"
if [ -n "$PARTS" ]; then
PARTS="$PARTS,"
fi
PARTS="$PARTS {\"ETag\":$ETAG,\"PartNumber\":$NUM}"
done
echo "======================================== LIST ===="
aws s3api list-parts --bucket test --key upload --upload-id "$UPLOAD" | jq
echo "======================================== COMPLETE ===="
echo "{\"Parts\":[$PARTS]}" > mpu
aws s3api complete-multipart-upload --multipart-upload file://mpu \
--bucket test --key 'upload' --upload-id "$UPLOAD"
echo "======================================== LIST ===="
aws s3api list-parts --bucket test --key upload --upload-id "$UPLOAD" | jq
echo "======================================== GET PART 4 ===="
aws s3api get-object --bucket test --key upload --part-number 4 get-part4
md5sum get-part4
