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feat: add optional size property to Resource with builder #331

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LucaButBoring
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@LucaButBoring LucaButBoring commented Jun 19, 2025

Adds optional size property to the Resource type, which was added to the spec in 2025-03-26. Also adds a Resource builder class to avoid needing to add more constructors in the future.

Motivation and Context

Missing spec-defined feature.

How Has This Been Tested?

Unit tests

Breaking Changes

None, added a backwards-compatible ctor to avoid a breaking change. Also implemented a builder to avoid needing to do this in the future.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

Additional context

Closes #330

@tzolov
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tzolov commented Jun 23, 2025

Thank you @LucaButBoring , It looks good.
Perhaps we can add validation to ensure that the compulsory fields uri and name are not empty.

@tzolov tzolov self-assigned this Jun 23, 2025
@tzolov tzolov added this to the 0.11.0 milestone Jun 23, 2025
@LucaButBoring
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Updated

tzolov pushed a commit that referenced this pull request Jun 24, 2025
The size field helps hosts display file sizes and estimate context window usage.

- Add size parameter to Resource record for tracking raw content size in bytes
- Implement Builder pattern for Resource construction with validation
- Add deprecated constructor for backwards compatibility
- Add tests for builder pattern and field validation

Resolves #330

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
@tzolov
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tzolov commented Jun 24, 2025

Thanks @LucaButBoring ,
Rebased, squashed, adjusted and merged at 6c330db

@tzolov tzolov closed this Jun 24, 2025
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Support optional resource sizes
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