chore: Reorganize examples and interop crates (#180)

* chore: Reorganize examples and interop crates

* fix interop tests

examples/src/multiplex/client.rs

@@ -0,0 +1,39 @@
+pub mod hello_world {
+    tonic::include_proto!("helloworld");
+}
+
+pub mod echo {
+    tonic::include_proto!("grpc.examples.echo");
+}
+
+use echo::{echo_client::EchoClient, EchoRequest};
+use hello_world::{greeter_client::GreeterClient, HelloRequest};
+use tonic::transport::Endpoint;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let channel = Endpoint::from_static("http://[::1]:50051")
+        .connect()
+        .await?;
+
+    let mut greeter_client = GreeterClient::new(channel.clone());
+    let mut echo_client = EchoClient::new(channel);
+
+    let request = tonic::Request::new(HelloRequest {
+        name: "Tonic".into(),
+    });
+
+    let response = greeter_client.say_hello(request).await?;
+
+    println!("GREETER RESPONSE={:?}", response);
+
+    let request = tonic::Request::new(EchoRequest {
+        message: "hello".into(),
+    });
+
+    let response = echo_client.unary_echo(request).await?;
+
+    println!("ECHO RESPONSE={:?}", response);
+
+    Ok(())
+}

examples/src/multiplex/server.rs

@@ -0,0 +1,72 @@
+use futures::Stream;
+use std::pin::Pin;
+use tonic::{transport::Server, Request, Response, Status};
+
+pub mod hello_world {
+    tonic::include_proto!("helloworld");
+}
+
+pub mod echo {
+    tonic::include_proto!("grpc.examples.echo");
+}
+
+use hello_world::{
+    greeter_server::{Greeter, GreeterServer},
+    HelloReply, HelloRequest,
+};
+
+use echo::{
+    echo_server::{Echo, EchoServer},
+    EchoRequest, EchoResponse,
+};
+
+type ResponseStream = Pin<Box<dyn Stream<Item = Result<EchoResponse, Status>> + Send + Sync>>;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let addr = "[::1]:50051".parse().unwrap();
+
+    let greeter = GreeterServer::new(MyGreeter::default());
+    let echo = EchoServer::new(MyEcho::default());
+
+    Server::builder()
+        .add_service(greeter)
+        .add_service(echo)
+        .serve(addr)
+        .await?;
+
+    Ok(())
+}
+
+#[derive(Default)]
+pub struct MyGreeter {}
+
+#[tonic::async_trait]
+impl Greeter for MyGreeter {
+    async fn say_hello(
+        &self,
+        request: Request<HelloRequest>,
+    ) -> Result<Response<HelloReply>, Status> {
+        let reply = hello_world::HelloReply {
+            message: format!("Hello {}!", request.into_inner().name).into(),
+        };
+        Ok(Response::new(reply))
+    }
+}
+
+#[derive(Default)]
+pub struct MyEcho;
+
+#[tonic::async_trait]
+impl Echo for MyEcho {
+    async fn unary_echo(
+        &self,
+        request: Request<EchoRequest>,
+    ) -> Result<Response<EchoResponse>, Status> {
+        let message = request.into_inner().message;
+        Ok(Response::new(EchoResponse { message }))
+    }
+
+    type ServerStreamingEchoStream = ResponseStream;
+    type BidirectionalStreamingEchoStream = ResponseStream;
+}