seaweedFS/test/s3/tagging

S3 Object Tagging Tests

This directory contains tests for S3 object tagging functionality.

Issue Reference

These tests were created to verify the fix for GitHub Issue #7589: S3 object Tags query comes back empty

Problem Description

When uploading an object with tags using the X-Amz-Tagging header, the tags were not being stored. When querying the object tagging with GetObjectTagging, the response was empty.

This was a regression between SeaweedFS 4.00 and 4.01.

Root Cause

The putToFiler function in s3api_object_handlers_put.go was not parsing the X-Amz-Tagging header and storing the tags in the entry's Extended metadata. The code was only copying user metadata (headers starting with X-Amz-Meta-) but not object tags.

Fix

Added tag parsing logic to putToFiler that:

1. Reads the X-Amz-Tagging header
2. Parses it using url.ParseQuery() for proper URL decoding
3. Stores each tag with the prefix X-Amz-Tagging- in the entry's Extended metadata

Running Tests

# Run all tagging tests
cd test/s3/tagging
make test

# Run specific test
make test-upload

# Or using go test directly
go test -v ./...

Test Cases

1. TestObjectTaggingOnUpload - Basic test for tags sent during object upload
2. TestObjectTaggingOnUploadWithSpecialCharacters - Tests URL-encoded tag values
3. TestObjectTaggingOnUploadWithEmptyValue - Tests tags with empty values
4. TestPutObjectTaggingAPI - Tests the PutObjectTagging API separately
5. TestDeleteObjectTagging - Tests tag deletion
6. TestTagsNotPreservedAfterObjectOverwrite - Verifies AWS S3 behavior on overwrite
7. TestMaximumNumberOfTags - Tests storing the maximum 10 tags
8. TestTagCountHeader - Tests the x-amz-tagging-count header in HeadObject