refactor: some renaming (#109)

hello-tracing-backend/proto/hello-tracing-backend-v0.proto

@@ -5,4 +5,4 @@ service Hello { rpc Hello(HelloRequest) returns (HelloResponse); }
 
 message HelloRequest {}
 
-message HelloResponse { string msg = 1; }
+message HelloResponse { string message = 1; }

hello-tracing-backend/src/api/v0.rs

@@ -10,7 +10,7 @@ use std::sync::atomic::{AtomicBool, Ordering};
 use tonic::{Request, Response, Status};
 use tracing::{debug, instrument};
 
-const MSGS: [&str; 2] = [
+const MESSAGES: [&str; 2] = [
     "Hello, I'm a tracing demo!",
     "Hello, I'm built with Rust, Axum and tonic!",
 ];
@@ -34,10 +34,10 @@ impl Hello for HelloService {
         self.0.store(current, Ordering::Release);
 
         // Get message for this response.
-        let msg = if current { MSGS[0] } else { MSGS[1] };
-        let msg = msg.to_string();
-        debug!(msg, "answering with msg");
+        let message = if current { MESSAGES[0] } else { MESSAGES[1] };
+        let message = message.to_string();
+        debug!(message, "answering");
 
-        Ok(Response::new(HelloResponse { msg }))
+        Ok(Response::new(HelloResponse { message }))
     }
 }

hello-tracing-gateway/proto/hello-tracing-backend-v0.proto

@@ -5,4 +5,4 @@ service Hello { rpc Hello(HelloRequest) returns (HelloResponse); }
 
 message HelloRequest {}
 
-message HelloResponse { string msg = 1; }
+message HelloResponse { string message = 1; }

hello-tracing-gateway/src/backend.rs

@@ -31,20 +31,20 @@ impl Backend {
             .with_context(|| format!("connect to endpoint {}", self.endpoint))?;
         let mut client = HelloClient::with_interceptor(channel, send_trace);
 
-        let msg = client
+        let message = client
             .hello(HelloRequest {})
             .await
-            .with_context(|| format!("call rpc Hello on endpoint {}", self.endpoint))?
+            .with_context(|| format!("call Hello on endpoint {}", self.endpoint))?
             .into_inner()
-            .msg;
+            .message;
 
         debug!(
-            msg,
+            message,
             endpoint = self.endpoint,
-            "received response from rpc Hello"
+            "received response from Hello"
         );
 
-        Ok(msg)
+        Ok(message)
     }
 }