This is based on the "Greeter" example, using the examples from both grpc and tonic

It exists as a repository that demonstrates how to build a rust based grpc service using bazel, whilst using tonic and prost on the rust side.

This also contains a c++ client for the same rust server.

Dependencies are managed with cargo-raze remotely, from the //third_party path.

Note: protoc is passed to the build script through the PROTOC env var. However, the @com_google_protobuf//:protoc rule provided by rules_proto_grpc compiles protoc from the source, whereas rules_proto can use pre-compiled binaries. If you are only using prost and tonic consider using rules_proto.

In 0.25.0, rules_rust also added bazel-style protobuf/grpc support using prost/tonic in parallel with the rust grpc/protobuf crates. This approach remains to be useful if one wants to customize the build process (e.g., using pbjson to derive serde traits for protobuf messages).

To run:

server: bazel run //greeter/server:greeter_server

rust client: bazel run //greeter/client:greeter_client_rs

c++ client: bazel run //greeter/client:greeter_client_cc