Function GetProtobufByteSize

src/brpc/protocol.h:63–69

// use template to avoid include `google/protobuf/message.h`
template<typename T>
inline uint32_t GetProtobufByteSize(const T& message) {
#if GOOGLE_PROTOBUF_VERSION >= 3010000
    return message.ByteSizeLong();
#else
    return static_cast<uint32_t>(message.ByteSize());
#endif
}

// 3 steps to add a new Protocol:
// Step1: Add a new ProtocolType in src/brpc/options.proto