Factor out json seriailzation code and move it into parse_json.

This is for the same reasons as ParseJson, that is so that we can limit
the scope of the proto namespace differences between internal and
external.

1 files changed, 15 insertions, 0 deletions

diff --git a/test/cpp/qps/parse_json.cc b/test/cpp/qps/parse_json.cc
index a90bf6153c..be804281f8 100644
--- a/test/cpp/qps/parse_json.cc
+++ b/test/cpp/qps/parse_json.cc
@@ -61,5 +61,20 @@ void ParseJson(const grpc::string& json, const grpc::string& type,
   GPR_ASSERT(msg->ParseFromString(binary));
 }
 
+grpc::string SerializeJson(const GRPC_CUSTOM_MESSAGE& msg,
+                           const grpc::string& type) {
+  std::unique_ptr<google::protobuf::util::TypeResolver> type_resolver(
+      google::protobuf::util::NewTypeResolverForDescriptorPool(
+          "type.googleapis.com",
+          google::protobuf::DescriptorPool::generated_pool()));
+  grpc::string binary;
+  grpc::string json_string;
+  msg.SerializeToString(&binary);
+  auto status =
+      BinaryToJsonString(type_resolver.get(), type, binary, &json_string);
+  GPR_ASSERT(status.ok());
+  return json_string;
+}
+
 }  // testing
 }  // grpc