Do not send Md5 checksum header if ChecksumMode is enabled

[davidh44]

Motivation and Context

Currently, if checksum validation is enabled (default) and regular S3 is used, EnableTrailingChecksumInterceptor adds x-amz-te:append-md5 to a GetObjectRequest. The server adds the Md5 checksum to the response and the SDK validates it, wrapping with S3ChecksumValidatingInputStream (sync) or S3ChecksumValidatingPublisher (aync).

This is done even if ChecksumMode is enabled on the GetObjectRequest. If a ChecksumAlgorithm was specified on the PutObjectRequest, the HttpChecksumValidationInterceptor will validate the flexible checksum, wrapping with ChecksumValidatingInputStream or ChecksumValidatingPublisher. Validation is performed twice, both for Md5 and flexible checksums.

#4694

Modifications

If ChecksumMode is enabled, do not add x-amz-te:append-md5 to a GetObjectRequest.

If ChecksumMode is enabled and an algorithm was specified when the object was put, only the flexible checksum will be validated.

If ChecksumMode is enabled and no algorithm was specified when the object was put, no validation will be performed. (previously it would fallback to Md5 validation)

Testing

Added unit and integ tests

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed
• I have added a changelog entry. Adding a new entry must be accomplished by running the scripts/new-change script and following the instructions. Commit the new file created by the script in .changes/next-release with your changes.
• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[zoewangg]

Let's make sure integ tests are passing before merging.

[sonarqubecloud]

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79.9% Coverage
0.0% Duplication

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