Feat/grpc

[markovejnovic]

No description provided.

[mesa-dot-dev]

Mesa Description

This PR introduces the foundation for a new gRPC-based data plane for the Version Control System (VCS). By leveraging Protocol Buffers, it establishes a strongly-typed, high-performance API for all core VCS operations.

Key Changes:

• gRPC Service Definition (vcs.proto):

  • Defines the core API contract for the VCS data plane.
  • Establishes three primary services:
    • ControlService: Write operations (e.g., creating commits, branches).
    • DataService: Read-only operations (e.g., fetching objects).
    • BlobTransferService: Optimized for large object transfers.

• Build System Integration:

  • Adds tonic, prost, and tokio as core dependencies to support the gRPC stack.
  • The build.rs script now automatically compiles the .proto files into Rust client code during the build process.

• CI/CD Automation:

  • A new GitHub Actions workflow (accept_proto.yml) is added to automate the process of updating and validating protocol buffer definitions, ensuring consistency and correctness.

^{Description generated by Mesa. Update settings}

[mesa-dot-dev]

Performed full review of 0141cd1...7b17121

Analysis

1. Build script requires proto sources at compile time, but these sources are not versioned, which will break downstream builds.
2. gRPC runtime dependencies are added unconditionally without feature gates, forcing all consumers to inherit a heavy async stack before any gRPC API surface exists.
3. The PR leaves the application-layer implementation incomplete - needs either committed proto definitions with generated bindings or feature-gated build steps.
4. Current implementation will prevent the existing REST client from building until the gRPC components are fully implemented.

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