Add more information so that we can have a meaningful exit code

src/proto/grpc/testing/control.proto

@@ -229,4 +229,7 @@ message ScenarioResult {
   repeated int32 server_cores = 5;
   // An after-the-fact computed summary
   ScenarioResultSummary summary = 6;
+  // Information on success or failure of each worker
+  repeated bool client_success = 7;
+  repeated bool server_success = 8;
 }

test/cpp/qps/driver.cc

@@ -436,6 +436,7 @@ std::unique_ptr<ScenarioResult> RunScenario(
   for (size_t i = 0; i < num_clients; i++) {
     auto client = &clients[i];
     Status s = client->stream->Finish();
+    result->add_client_success(s.ok());
     if (!s.ok()) {
       gpr_log(GPR_ERROR, "Client %zu had an error %s", i,
 	      s.error_message().c_str());
@@ -471,6 +472,7 @@ std::unique_ptr<ScenarioResult> RunScenario(
   for (size_t i = 0; i < num_servers; i++) {
     auto server = &servers[i];
     Status s = server->stream->Finish();
+    result->add_server_success(s.ok());
     if (!s.ok()) {
       gpr_log(GPR_ERROR, "Server %zu had an error %s", i,
 	      s.error_message().c_str());
@@ -483,8 +485,9 @@ std::unique_ptr<ScenarioResult> RunScenario(
   return result;
 }
 
-void RunQuit() {
+bool RunQuit() {
   // Get client, server lists
+  bool result = true;
   auto workers = get_workers("QPS_WORKERS");
   for (size_t i = 0; i < workers.size(); i++) {
     auto stub = WorkerService::NewStub(
@@ -496,9 +499,10 @@ void RunQuit() {
     if (!s.ok()) {
       gpr_log(GPR_ERROR, "Worker %zu could not be properly quit because %s",
 	      i, s.error_message().c_str());
-      GPR_ASSERT(false);
+      result = false;
     }
   }
+  return result;
 }
 
 }  // namespace testing

test/cpp/qps/driver.h

@@ -47,7 +47,7 @@ std::unique_ptr<ScenarioResult> RunScenario(
     const grpc::testing::ServerConfig& server_config, size_t num_servers,
     int warmup_seconds, int benchmark_seconds, int spawn_local_worker_count);
 
-void RunQuit();
+bool RunQuit();
 }  // namespace testing
 }  // namespace grpc
 

test/cpp/qps/qps_json_driver.cc

@@ -53,7 +53,7 @@ DEFINE_bool(quit, false, "Quit the workers");
 namespace grpc {
 namespace testing {
 
-static void QpsDriver() {
+static bool QpsDriver() {
   grpc::string json;
 
   bool scfile = (FLAGS_scenarios_file != "");
@@ -81,13 +81,13 @@ static void QpsDriver() {
   } else if (scjson) {
     json = FLAGS_scenarios_json.c_str();
   } else if (FLAGS_quit) {
-    RunQuit();
-    return;
+    return RunQuit();
   }
 
   // Parse into an array of scenarios
   Scenarios scenarios;
   ParseJson(json.c_str(), "grpc.testing.Scenarios", &scenarios);
+  bool success = true;
 
   // Make sure that there is at least some valid scenario here
   GPR_ASSERT(scenarios.scenarios_size() > 0);
@@ -109,7 +109,15 @@ static void QpsDriver() {
     GetReporter()->ReportQPSPerCore(*result);
     GetReporter()->ReportLatency(*result);
     GetReporter()->ReportTimes(*result);
+
+    for (int i = 0; success && i < result->client_success_size(); i++) {
+      success = result->client_success(i);
+    }
+    for (int i = 0; success && i < result->server_success_size(); i++) {
+      success = result->server_success(i);
+    }
   }
+  return success;
 }
 
 }  // namespace testing
@@ -118,7 +126,7 @@ static void QpsDriver() {
 int main(int argc, char **argv) {
   grpc::testing::InitBenchmark(&argc, &argv, true);
 
-  grpc::testing::QpsDriver();
+  bool ok = grpc::testing::QpsDriver();
 
-  return 0;
+  return ok ? 0 : 1;
 }