ttrpc-rust

ttrpc-rust is a non-core subproject of containerd

ttrpc-rust is the Rust version of ttrpc. ttrpc is GRPC for low-memory environments.

The ttrpc compiler of ttrpc-rust ttrpc_rust_plugin is modified from gRPC compiler of gRPC-rs grpcio-compiler.

Usage

To generate the sources from proto files:

1. Install protoc from github.com/protocolbuffers/protobuf

2. Install protobuf-codegen from github.com/pingcap/grpc-rs

cd grpc-rs
cargo install --force protobuf-codegen

3. Install ttrpc_rust_plugin from ttrpc-rust/compiler

cd ttrpc-rust/compiler
cargo install --force --path .

4. Generate the sources:

$ protoc --rust_out=. --ttrpc_out=. --plugin=protoc-gen-ttrpc=`which ttrpc_rust_plugin` example.proto

Run Examples

1. Go to the directory

   $ cd ttrpc-rust/example

2. Start the server

   $ cargo run --example server unix:///tmp/1

3. Start a client

   $ cargo run --example client /tmp/1

Notes: the version of protobuf

protobuf-codegen, ttrpc_rust_plugin and your code should use the same version protobuf. You will get following fail if use the different version protobuf.

27 | const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_8_0;
   |                                                 ^^^^^^^^^^^^^ help: a constant with a similar name exists: `VERSION_2_10_1`

The reason is that files generated by protobuf-codegen are compatible only with the same version of runtime

To fix this issue:

1. Rebuild protobuf-codegen with new protobuf:

cd grpc-rs
cargo clean
cargo update
cargo install --force protobuf-codegen

2. Rebuild ttrpc_rust_plugin with new protobuf:

cd ttrpc-rust/compiler
cargo clean
cargo update
cargo install --force --path .

3. Build your project.