From 7ded166d7d7ee94bd95fd1b4eb043791120f7539 Mon Sep 17 00:00:00 2001
From: Chengyuan Zhang <chengyuanzhang@google.com>
Date: Fri, 16 Oct 2020 16:10:26 -0700
Subject: [PATCH] Add empty message definitions for real-time stats service and
 configure service.

---
 src/proto/grpc/testing/messages.proto | 6 ++++++
 src/proto/grpc/testing/test.proto     | 5 +++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/proto/grpc/testing/messages.proto b/src/proto/grpc/testing/messages.proto
index e15d4a56a41..552922ea95a 100644
--- a/src/proto/grpc/testing/messages.proto
+++ b/src/proto/grpc/testing/messages.proto
@@ -213,6 +213,9 @@ message LoadBalancerStatsResponse {
   map<string, RpcsByPeer> rpcs_by_method = 3;
 }
 
+// Request for retrieving a test client's real time stats.
+message LoadBalancerRealTimeStatsRequest {}
+
 // Real-time stats for RPCs sent by a test client.
 message LoadBalancerRealTimeStatsResponse {
   // The real-time total number of RPCs issued.
@@ -244,3 +247,6 @@ message ClientConfigureRequest {
   // The collection of custom metadata to be attached to RPCs sent by the client.
   repeated Metadata metadata = 2;
 }
+
+// Response for updating a test client's configuration.
+message ClientConfigureResponse {}
diff --git a/src/proto/grpc/testing/test.proto b/src/proto/grpc/testing/test.proto
index 19f471be755..a7aaa10eb53 100644
--- a/src/proto/grpc/testing/test.proto
+++ b/src/proto/grpc/testing/test.proto
@@ -88,7 +88,7 @@ service LoadBalancerStatsService {
 // A service used to obtain real-time stats for verifying LB behavior.
 service LoadBalancerRealTimeStatsService {
   // Gets the real-time stats for RPCs sent by a test client.
-  rpc GetClientRealTimeStats(grpc.testing.Empty)
+  rpc GetClientRealTimeStats(LoadBalancerRealTimeStatsRequest)
       returns (LoadBalancerRealTimeStatsResponse) {}
 }
 
@@ -100,5 +100,6 @@ service XdsUpdateHealthService {
 
 // A service to dynamically update the configuration of an xDS test client.
 service XdsUpdateClientConfigureService {
-  rpc Configure(ClientConfigureRequest) returns (grpc.testing.Empty);
+  // Update the tes client's configuration.
+  rpc Configure(ClientConfigureRequest) returns (ClientConfigureResponse);
 }