feat(nydusify): support convert raw format of modctl artifact

[BraveY]

This pull request updates the mediaTypeChunkSizeMap in the nydus.go file to include new media types for raw model weights and datasets. These changes ensure that the chunk size mapping accommodates additional media types.

Updates to chunk size mapping:

• pkg/backend/build/interceptor/nydus.go: Added modelspec.MediaTypeModelWeightRaw and modelspec.MediaTypeModelDatasetRaw to the mediaTypeChunkSizeMap with a chunk size of 64 * 1024 * 1024.

[gemini-code-assist]

Hello @BraveY, 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!

Summary of Changes

Hello! Gemini here, providing a summary of this pull request. This PR, authored by BraveY, aims to enhance the nydusify functionality by adding support for converting raw format model weights and datasets. The core change involves updating the mediaTypeChunkSizeMap within the nydus interceptor to recognize and handle these new raw media types, assigning them the standard 64MB chunk size used for their non-raw counterparts. This ensures that raw artifacts can be processed correctly during the nydus conversion process.

Highlights

• Support for Raw Artifacts: Adds recognition and handling for raw format model weights (modelspec.MediaTypeModelWeightRaw) and datasets (modelspec.MediaTypeModelDatasetRaw) during nydus conversion.
• Chunk Size Mapping Update: Modifies the mediaTypeChunkSizeMap to include the newly supported raw media types, assigning them a default chunk size of 64MB.

Changelog

• pkg/backend/build/interceptor/nydus.go
  • Added modelspec.MediaTypeModelWeightRaw to the mediaTypeChunkSizeMap with a value of 64 * 1024 * 1024.
  • Added modelspec.MediaTypeModelDatasetRaw to the mediaTypeChunkSizeMap with a value of 64 * 1024 * 1024.

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[gemini-code-assist]

Code Review

This PR clearly and effectively adds support for raw format model weights and datasets in the nydusify process by updating the mediaTypeChunkSizeMap. The changes are well-scoped and directly address the intended feature. The code is straightforward, easy to understand, and aligns with existing patterns. Great job on this addition!

Summary of Findings

• Code Maintainability: Repeated Chunk Size: The chunk size 64 * 1024 * 1024 is now used for four media types in mediaTypeChunkSizeMap (lines 39-42 in pkg/backend/build/interceptor/nydus.go). For improved readability and maintainability, consider defining this value as a named constant, for example: const ModelArtifactChunkSize = 64 * 1024 * 1024 (potentially near the existing DefaultFileChunkSize constant). Using such a constant would make the intent clearer and simplify future updates if this shared chunk size needs to be changed. This was not added as a specific review comment due to the issue being considered low severity per general guidelines and the current review settings.

Merge Readiness

This pull request appears to be in good shape and ready for merging. The changes are correct, clearly implemented, and fulfill the PR's stated objective. A minor point for future consideration regarding code maintainability has been noted in the findings summary, which can be addressed at the author's discretion. As an AI assistant, I am not authorized to approve pull requests; please ensure this change is reviewed and approved by team members before merging.

[imeoer]

LGTM!

[chlins]

lgtm