Add channel args to qps server

src/proto/grpc/testing/control.proto

@@ -152,6 +152,7 @@ message ServerConfig {
 
   // Buffer pool size (no buffer pool specified if unset)
   int32 resource_quota_size = 1001;
+  repeated ChannelArg channel_args = 1002;
 }
 
 message ServerArgs {

test/cpp/qps/server.h

@@ -19,8 +19,11 @@
 #ifndef TEST_QPS_SERVER_H
 #define TEST_QPS_SERVER_H
 
+#include <grpc++/resource_quota.h>
 #include <grpc++/security/server_credentials.h>
+#include <grpc++/server_builder.h>
 #include <grpc/support/cpu.h>
+#include <grpc/support/log.h>
 #include <vector>
 
 #include "src/core/lib/surface/completion_queue.h"
@@ -102,6 +105,31 @@ class Server {
     return 0;
   }
 
+ protected:
+  static void ApplyConfigToBuilder(const ServerConfig& config,
+                                   ServerBuilder* builder) {
+    if (config.resource_quota_size() > 0) {
+      builder->SetResourceQuota(ResourceQuota("AsyncQpsServerTest")
+                                    .Resize(config.resource_quota_size()));
+    }
+    for (const auto& channel_arg : config.channel_args()) {
+      switch (channel_arg.value_case()) {
+        case ChannelArg::kStrValue:
+          builder->AddChannelArgument(channel_arg.name(),
+                                      channel_arg.str_value());
+          break;
+        case ChannelArg::kIntValue:
+          builder->AddChannelArgument(channel_arg.name(),
+                                      channel_arg.int_value());
+          break;
+        case ChannelArg::VALUE_NOT_SET:
+          gpr_log(GPR_ERROR, "Channel arg '%s' does not have a value",
+                  channel_arg.name().c_str());
+          break;
+      }
+    }
+  }
+
  private:
   int port_;
   int cores_;

test/cpp/qps/server_async.cc

@@ -99,10 +99,7 @@ class AsyncQpsServerTest final : public grpc::testing::Server {
       cq_.emplace_back(i % srv_cqs_.size());
     }
 
-    if (config.resource_quota_size() > 0) {
-      builder.SetResourceQuota(ResourceQuota("AsyncQpsServerTest")
-                                   .Resize(config.resource_quota_size()));
-    }
+    ApplyConfigToBuilder(config, &builder);
 
     server_ = builder.BuildAndStart();
 

test/cpp/qps/server_sync.cc

@@ -19,15 +19,12 @@
 #include <atomic>
 #include <thread>
 
-#include <grpc++/resource_quota.h>
 #include <grpc++/security/server_credentials.h>
 #include <grpc++/server.h>
-#include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc/grpc.h>
 #include <grpc/support/alloc.h>
 #include <grpc/support/host_port.h>
-#include <grpc/support/log.h>
 
 #include "src/proto/grpc/testing/services.grpc.pb.h"
 #include "test/cpp/qps/server.h"
@@ -166,10 +163,7 @@ class SynchronousServer final : public grpc::testing::Server {
                              Server::CreateServerCredentials(config));
     gpr_free(server_address);
 
-    if (config.resource_quota_size() > 0) {
-      builder.SetResourceQuota(ResourceQuota("AsyncQpsServerTest")
-                                   .Resize(config.resource_quota_size()));
-    }
+    ApplyConfigToBuilder(config, &builder);
 
     builder.RegisterService(&service_);