Fail UploadDirectory if xform throws

[dagnir]

Motivation and Context

This fixes an issue where if the request transformation function given to UploadDirectoryRequest throws an error when it is invoked, the error would be silently swallowed. Now, the completion future will be completed exceptionally if the function throws.

Modifications

• Added exception handling to the buffering subscriber
• Added exception handling to UploadDirectoryHelper

Testing

• new tests for Upload/DownloadDirectoryHelper

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

[sonarqubecloud]

Quality Gate failed

Failed conditions
B Reliability Rating on New Code (required ≥ A)

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