Gargi-jais11 opened a new pull request, #10930:
URL: https://github.com/apache/ozone/pull/10930
## What changes were proposed in this pull request?
Implement the initial GetObjectAttributes support in the S3 Gateway.
**PR Changes:**
- API : GET /{bucket}/{key}?attributes
- Required header: x-amz-object-attributes
- Supported attributes:
- ETag — object ETag (MD5 or composite hash for multipart
objects)
- ObjectSize — object size in bytes
- StorageClass — storage/replication class
- ObjectParts — for multipart objects,
- Response format: XML GetObjectAttributesResponse with Last-Modified
response header
- Error handling: 404 NoSuchKey when the object does not exist, 403
AccessDenied on authorization failure, 400 InvalidArgument when the attributes
header is missing or invalid
- Audit and metrics: GET_OBJECT_ATTRIBUTES audit action and success/failure
metrics
**Out of scope:**
- Populating Checksum - non-MD5 checksums are not stored in ozone.
- ObjectParts.Part[] with per-part PartNumber / Size -> this will be
implemented in follow-up PR
- Pagination (MaxParts, markers, real IsTruncated behavior) -> this will be
implemented in followip PR
- versionId and SSE-C -> Not implemented in ozone
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-16072
## How was this patch tested?
Added unit test and integration test.
Manually tested:
```
bash-5.1$ BUCKET=get-attr-test-bucket
KEY=get-attr-test-key
bash-5.1$ aws s3api create-bucket --bucket "$BUCKET" --endpoint-url
http://s3g:9878/
{
"Location": "http://s3g:9878/get-attr-test-bucket";
}
bash-5.1$ echo "hello-get-object-attributes" | aws s3 cp -
"s3://$BUCKET/$KEY" --endpoint-url http://s3g:9878/
bash-5.1$ aws s3api get-object-attributes \
--bucket "$BUCKET" \
--key "$KEY" \
--object-attributes ETag ObjectSize StorageClass \
--endpoint-url http://s3g:9878/
{
"LastModified": "Mon, 03 Aug 2026 06:39:03 GMT",
"ETag": "\"88fa5b0b7b11af7d6bdd31a64e1cad0a\"",
"StorageClass": "STANDARD",
"ObjectSize": 28
}
--------------------------------
// Test multipart ObjectParts
--------------------------------
bash-5.1$ dd if=/dev/zero of=/tmp/mpu-test.bin bs=1M count=15
15+0 records in
15+0 records out
15728640 bytes (16 MB, 15 MiB) copied, 0.00987967 s, 1.6 GB/s
bash-5.1$ aws s3 cp /tmp/mpu-test.bin "s3://$BUCKET/mpu-key" --endpoint-url
http://s3g:9878/
upload: ../../tmp/mpu-test.bin to s3://get-attr-test-bucket/mpu-key
bash-5.1$ aws s3api get-object-attributes --bucket "$BUCKET" --key
"mpu-key" --object-attributes ETag ObjectSize ObjectParts --endpoint-url
http://s3g:9878/
{
"LastModified": "Mon, 03 Aug 2026 06:40:01 GMT",
"ETag": "\"cb075a2e9cd2c450e3822ba742921b31-2\"",
"ObjectParts": {
"TotalPartsCount": 2,
"PartNumberMarker": 0,
"NextPartNumberMarker": 0,
"MaxParts": 0,
"IsTruncated": false
},
"ObjectSize": 15728640
}
```
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