WASI gRPC server helper for Rust

You can serve gRPC over wasi-http using tonic and wasi-hyperium. This crate provides a `#[grpc_component] macro to hide some of the plumbing. Example usage:

pub mod route_guide {
    tonic::include_proto!("routeguide");
}

use route_guide::route_guide_server::RouteGuide;
use route_guide::route_guide_server::RouteGuideServer;

#[wasi_grpc_server::grpc_component(RouteGuideServer)]
struct MyRouteGuide;

#[tonic::async_trait]
impl RouteGuide for MyRouteGuide {
    // ... service implementation here ...
}

IMPORTANT: You must add the wasi and wasi-hyperium references to your server crate. The macro doesn't do this for you. You'll also need to do the usual tonic generation shenanigans (tonic_build::configure() in build.rs, and tonic::include_proto! in your server). The macro only handles wiring up the wasi:http interface to the tonic gRPC handlers.

See the Examples folder for more.

Status

This crate has received the Works On My Machine seal of quality. Please expect issues and raise them on the GitHub repo.

Known limitations

• Streaming responses do not stream: instead they are delivered as a block when the stream completes.