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feat: add system metadata assertion #270

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@strantalis strantalis requested review from a team as code owners June 16, 2025 16:23
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Summary of Changes

Hello @strantalis, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new feature to automatically embed system metadata as an assertion within the TDF manifest. This enhancement improves traceability and debugging by capturing details about the environment where a TDF file was created, such as the operating system, Java version, and hostname, directly within the TDF's metadata.

Highlights

  • New System Metadata Assertion: A new static method getSystemMetadataAssertionConfig has been added to AssertionConfig. This method generates an assertion containing system-specific details such as the operating system, Java version, architecture, hostname, creation date, SDK version, and TDF specification version. This information is formatted as a JSON string and included as the assertion's value.
  • Configurable System Metadata Assertion: A systemMetadataAssertion boolean flag has been introduced in Config.TDFConfig, along with a convenient withSystemMetadataAssertion() builder method. This allows users to easily enable or disable the automatic inclusion of system metadata as an assertion during TDF creation.
  • Integration into TDF Creation Workflow: The createTDF method in TDF.java has been updated to conditionally add the generated system metadata assertion to the TDF manifest. This occurs only if the systemMetadataAssertion flag is enabled in the provided configuration, ensuring that the metadata is embedded directly into the TDF file.
  • Comprehensive Test Coverage: A new unit test, testSystemMetadataAssertion, has been added to TDFTest.java. This test thoroughly validates that when the systemMetadataAssertion flag is enabled, the system metadata assertion is correctly generated, included in the TDF manifest, and that its JSON content accurately reflects the expected system properties.
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Code Review

The code changes introduce a new system metadata assertion feature. The feedback focuses on improving code clarity, maintainability, and error handling.

@strantalis strantalis requested a review from a team as a code owner June 16, 2025 16:46
@strantalis strantalis requested a review from mkleene June 17, 2025 01:43
mkleene
mkleene previously approved these changes Jun 17, 2025
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