set up stub grpc client

Cargo.toml

@@ -3,6 +3,6 @@
 members = [
     "planetwars-rules",
     "planetwars-matchrunner",
-    "planetwars-cli",
     "planetwars-server",
+    "planetwars-client",
 ]

planetwars-client/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "planetwars-client"
+version = "0.0.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tokio = { version = "1.15", features = ["full"] }
+prost = "0.10"
+tonic = "0.7.2"
+
+[build-dependencies]
+tonic-build = "0.7.2"

planetwars-client/build.rs

@@ -0,0 +1,9 @@
+extern crate tonic_build;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    tonic_build::configure()
+        .build_server(false)
+        .build_client(true)
+        .compile(&["../proto/bot_api.proto"], &["../proto"])?;
+    Ok(())
+}

planetwars-client/src/main.rs

@@ -0,0 +1,21 @@
+pub mod pb {
+    tonic::include_proto!("grpc.planetwars.bot_api");
+}
+
+use pb::test_service_client::TestServiceClient;
+use pb::{Hello, HelloResponse};
+use tonic::Response;
+
+#[tokio::main]
+async fn main() {
+    let mut client = TestServiceClient::connect("http://localhost:50051")
+        .await
+        .unwrap();
+    let response: Response<HelloResponse> = client
+        .greet(Hello {
+            hello_message: "robbe".to_string(),
+        })
+        .await
+        .unwrap();
+    println!("{}", response.get_ref().response);
+}