* s3: fix PutObject ETag format for multi-chunk uploads
Fix issue #7768: AWS S3 SDK for Java fails with 'Invalid base 16
character: -' when performing PutObject on files that are internally
auto-chunked.
The issue was that SeaweedFS returned a composite ETag format
(<md5hash>-<count>) for regular PutObject when the file was split
into multiple chunks due to auto-chunking. However, per AWS S3 spec,
the composite ETag format should only be used for multipart uploads
(CreateMultipartUpload/UploadPart/CompleteMultipartUpload API).
Regular PutObject should always return a pure MD5 hash as the ETag,
regardless of how the file is stored internally.
The fix ensures the MD5 hash is always stored in entry.Attributes.Md5
for regular PutObject operations, so filer.ETag() returns the pure
MD5 hash instead of falling back to ETagChunks() composite format.
* test: add comprehensive ETag format tests for issue #7768
Add integration tests to ensure PutObject ETag format compatibility:
Go tests (test/s3/etag/):
- TestPutObjectETagFormat_SmallFile: 1KB single chunk
- TestPutObjectETagFormat_LargeFile: 10MB auto-chunked (critical for #7768)
- TestPutObjectETagFormat_ExtraLargeFile: 25MB multi-chunk
- TestMultipartUploadETagFormat: verify composite ETag for multipart
- TestPutObjectETagConsistency: ETag consistency across PUT/HEAD/GET
- TestETagHexValidation: simulate AWS SDK v2 hex decoding
- TestMultipleLargeFileUploads: stress test multiple large uploads
Java tests (other/java/s3copier/):
- Update pom.xml to include AWS SDK v2 (2.20.127)
- Add ETagValidationTest.java with comprehensive SDK v2 tests
- Add README.md documenting SDK versions and test coverage
Documentation:
- Add test/s3/SDK_COMPATIBILITY.md documenting validated SDK versions
- Add test/s3/etag/README.md explaining test coverage
These tests ensure large file PutObject (>8MB) returns pure MD5 ETags
(not composite format), which is required for AWS SDK v2 compatibility.
* fix: lower Java version requirement to 11 for CI compatibility
* address CodeRabbit review comments
- s3_etag_test.go: Handle rand.Read error, fix multipart part-count logging
- Makefile: Add 'all' target, pass S3_ENDPOINT to test commands
- SDK_COMPATIBILITY.md: Add language tag to fenced code block
- ETagValidationTest.java: Add pagination to cleanup logic
- README.md: Clarify Go SDK tests are in separate location
* ci: add s3copier ETag validation tests to Java integration tests
- Enable S3 API (-s3 -s3.port=8333) in SeaweedFS test server
- Add S3 API readiness check to wait loop
- Add step to run ETagValidationTest from s3copier
This ensures the fix for issue #7768 is continuously tested
against AWS SDK v2 for Java in CI.
* ci: add S3 config with credentials for s3copier tests
- Add -s3.config pointing to docker/compose/s3.json
- Add -s3.allowDeleteBucketNotEmpty for test cleanup
- Set S3_ACCESS_KEY and S3_SECRET_KEY env vars for tests
* ci: pass S3 config as Maven system properties
Pass S3_ENDPOINT, S3_ACCESS_KEY, S3_SECRET_KEY via -D flags
so they're available via System.getProperty() in Java tests
1. go get aqwari.net/xml/cmd/xsdgen 2. Add EncodingType element for ListBucketResult in AmazonS3.xsd 3. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd 4. Remove empty Grantee struct in s3api_xsd_generated.go 5. Remove xmlns: sed s'/http:\/\/s3.amazonaws.com\/doc\/2006-03-01\/\ //' s3api_xsd_generated.go
Chris Lu