Rust Runtime features for running Oak applications

[ipetr0v]

This checklist contains features that must be implemented in the Rust Oak Runtime in order to run Oak applications, viz. existing example applications.

• Implement Rust Oak Loader (Issue: Create Rust oak_loader binary #723, PR: Rust Oak Loader #749)
• Rust gRPC server pseudo-node
  • Implement gRPC server pseudo-node (Issue: gRPC server pseudo-node in Rust Oak Runtime #751, PR: Rust gRPC server pseudo-node #772)
  • Add TLS support (Issue: TLS for gRPC pseudo-node #806, PR: TLS for gRPC pseudo-node #806)
    • Add tonic as a crate in cargo-raze (Issue: Add tonic as a crate in cargo-raze #890, PR: Add tonic as a crate in cargo-raze #891)
  • Refactor pseudo-node creation (Issue: Refactor Node thread creation (use tokio::sync::oneshot) #982, PR: Use futures select for stopping gRPC nodes #985)
  • Add streaming support (Issue: Add streaming support for gRPC server #953)
  • Implement unit tests (Issue: Unit tests for gRPC pseudo node #807, PR: Test gRPC server pseudo-Node startup error cases #1109)
• Rust gRPC client pseudo-node
  • Implement Rust gRPC client pseudo-node (Issue: Implement gRPC client pseudo-node in Rust runtime #844, PR: Add gRPC client pseudo-Node #909)
  • Add streaming support (Issue: Add streaming support for gRPC client #954, PR: Server-streaming method support in gRPC client pseudo-Node #1056)
• Run examples with Rust Oak Loader (Issues: Use Rust oak_loader for running examples #725, Provide gRPC read handle to the Oak entrypoint #874, PR: Use Rust Loader for running examples #993)
  • Enable abitest additional tests (requires storage pseudo-node and Roughtime pseudo-node)
  • Enable tensorflow (requires either Wasm stubs for WASI entrypoints like Add a WASI placeholder #529, or remove the need for them Remove WASI placeholders #817)
  • Enable C++ examples (Issue: Run C++ examples with Rust Oak Loader #1009, PR: Commonize C++ module code and get working again #1019)

[ipetr0v]

cc @tiziano88 @daviddrysdale @conradgrobler

[daviddrysdale]

I think we can close this out as remaining things are covered by other issues (esp #1040 for storage)?