BugFix: fix pb derialization failed at server (#114)

- Enable lite via `option optimize_for = LITE_RUNTIME;` at proto file

Author: weimch

trpc/server/rpc/unary_rpc_method_handler.h

@@ -143,9 +143,9 @@ class UnaryRpcMethodHandler : public RpcMethodHandlerInterface {
 
 #ifdef TRPC_PROTO_USE_ARENA
   static constexpr bool IsEnablePbArena() {
-    return std::is_convertible_v<RequestType*, google::protobuf::Message*> &&
+    return std::is_convertible_v<RequestType*, google::protobuf::MessageLite*> &&
            google::protobuf::Arena::is_arena_constructable<RequestType>::value &&
-           std::is_convertible_v<ResponseType*, google::protobuf::Message*> &&
+           std::is_convertible_v<ResponseType*, google::protobuf::MessageLite*> &&
            google::protobuf::Arena::is_arena_constructable<ResponseType>::value;
   }
 #endif

trpc/server/server_context.cc

@@ -74,7 +74,7 @@ void ServerContext::SetDyeingKey(const std::string& key, const std::string& valu
   invoke_info_.message_type |= TrpcMessageType::TRPC_DYEING_MESSAGE;
 }
 
-void ServerContext::SendUnaryResponse(const Status& status, google::protobuf::Message* pb) {
+void ServerContext::SendUnaryResponse(const Status& status, google::protobuf::MessageLite* pb) {
   void* rsp_data = static_cast<void*>(pb);
   SendUnaryResponse(status, rsp_data, serialization::kPbMessage);
 }

trpc/server/server_context.h

@@ -513,8 +513,8 @@ class ServerContext : public RefCounted<ServerContext> {
   /// @note  before calling this method, you should call `SetResponse(false)` in the rpc interface implemented
   template <typename T>
   void SendUnaryResponse(const Status& status, T& biz_rsp) {
-    if constexpr (std::is_convertible_v<T*, google::protobuf::Message*>) {
-      SendUnaryResponse(status, static_cast<google::protobuf::Message*>(&biz_rsp));
+    if constexpr (std::is_convertible_v<T*, google::protobuf::MessageLite*>) {
+      SendUnaryResponse(status, static_cast<google::protobuf::MessageLite*>(&biz_rsp));
     } else if constexpr (std::is_convertible_v<T*, rapidjson::Document*>) {
       SendUnaryResponse(status, static_cast<rapidjson::Document*>(&biz_rsp));
     } else if constexpr (std::is_convertible_v<T*, flatbuffers::trpc::MessageFbs*>) {
@@ -600,7 +600,7 @@ class ServerContext : public RefCounted<ServerContext> {
 
  private:
   // Implementation of asynchronous packet return on the server side
-  void SendUnaryResponse(const Status& status, google::protobuf::Message* pb);
+  void SendUnaryResponse(const Status& status, google::protobuf::MessageLite* pb);
 
   // Implementation of asynchronous packet return on the server side
   void SendUnaryResponse(const Status& status, flatbuffers::trpc::MessageFbs* fbs);

trpc/stream/stream.h

@@ -72,7 +72,7 @@ class StreamReaderImpl : public RefCounted<StreamReaderImpl<R>> {
  private:
   inline bool Deserialize(NoncontiguousBuffer* buffer, void* msg) {
     serialization::DataType type;
-    if constexpr (std::is_convertible_v<R*, google::protobuf::Message*>) {
+    if constexpr (std::is_convertible_v<R*, google::protobuf::MessageLite*>) {
       type = serialization::kPbMessage;
     } else if constexpr (std::is_convertible_v<R*, rapidjson::Document*>) {
       type = serialization::kRapidJson;
@@ -132,7 +132,7 @@ class StreamWriterImpl : public RefCounted<StreamWriterImpl<W>> {
  private:
   inline bool Serialize(void* msg, NoncontiguousBuffer* buffer) {
     serialization::DataType type;
-    if constexpr (std::is_convertible_v<W*, google::protobuf::Message*>) {
+    if constexpr (std::is_convertible_v<W*, google::protobuf::MessageLite*>) {
       type = serialization::kPbMessage;
     } else if constexpr (std::is_convertible_v<W*, rapidjson::Document*>) {
       type = serialization::kRapidJson;