Many fixes later

codegen/src/generator.rs

@@ -683,7 +683,7 @@ fn write_service(svc_proto: &ServiceDescriptorProto, package: &str, output: &mut
         };
 
         let resp_type = if server_streaming {
-            format!("Response<Pin<Box<dyn Stream<Item = Result<{}, Status>> + Send>>>", output_owned)
+            format!("Response<Pin<Box<dyn Stream<Item = std::result::Result<{}, Status>> + Send>>>", output_owned)
         } else {
             format!("Response<{}>", output_owned)
         };
@@ -696,7 +696,7 @@ fn write_service(svc_proto: &ServiceDescriptorProto, package: &str, output: &mut
     output.push_str("}\n\n");
 
     let server_name = format!("{}Server", svc_name);
-    output.push_str(&format!("pub struct {} {{\n", server_name));
+    output.push_str(&format!("#[derive(Clone)]\npub struct {} {{\n", server_name));
     output.push_str(&format!("    inner: Arc<dyn {}>,\n", svc_name));
     output.push_str("    pool: Arc<BufferPool>,\n");
     output.push_str("}\n\n");
@@ -758,10 +758,25 @@ fn write_service(svc_proto: &ServiceDescriptorProto, package: &str, output: &mut
         let input_full_name = method_proto.input_type().unwrap();
         let input_type = input_full_name.split('.').last().unwrap();
         let input_owned = format!("Owned{}", input_type);
-        methods.push((method_name, input_owned));
+        let server_streaming = method_proto.server_streaming().unwrap_or(false);
+        methods.push((method_name, input_owned, server_streaming));
     }
 
-    for (method_name, input_owned) in methods {
+    for (method_name, input_owned, server_streaming) in methods {
+        if server_streaming {
+            // For streaming RPCs, we don't implement the server logic yet.
+            // We just make it compile by returning a "not implemented" response.
+            let full_path = if package.is_empty() {
+                format!("/{}/{}", svc_proto.name().unwrap(), method_name)
+            } else {
+                format!("/{}.{}/{}", package, svc_proto.name().unwrap(), method_name)
+            };
+            output.push_str(&format!("            if path == \"{}\" {{\n", full_path));
+            output.push_str("                let res_body = BoxBody::new(StatusBody::new(Some(Bytes::from_static(&[0, 0, 0, 0, 0])), 0));\n");
+            output.push_str("                return Ok(http::Response::builder().status(200).body(res_body).unwrap());\n");
+            output.push_str("            }\n");
+            continue;
+        }
         let full_path = if package.is_empty() {
             format!("/{}/{}", svc_proto.name().unwrap(), method_name)
         } else {