message.h

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// Copyright (c) 2016-2019, The Monero Project
// 
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//    conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
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#pragma once
 
#include "rapidjson/document.h"
#include "rpc/message_data_structs.h"
#include <string>
 
/* I normally hate using macros, but in this case it would be untenably
 * verbose to not use a macro.  This macro saves the trouble of explicitly
 * writing the below if block for every single RPC call.
 */
#define REQ_RESP_TYPES_MACRO( runtime_str, type, reqjson, resp_message_ptr, handler) \
  \
  if (runtime_str == type::name) \
  { \
    type::Request reqvar; \
    type::Response *respvar = new type::Response(); \
    \
    reqvar.fromJson(reqjson); \
    \
    handler(reqvar, *respvar); \
    \
    resp_message_ptr = respvar; \
  }
 
namespace cryptonote
{
 
namespace rpc
{
 
  class Message
  {
    public:
      static const char* STATUS_OK;
      static const char* STATUS_RETRY;
      static const char* STATUS_FAILED;
      static const char* STATUS_BAD_REQUEST;
      static const char* STATUS_BAD_JSON;
 
      Message() : status(STATUS_OK), rpc_version(0) { }
 
      virtual ~Message() { }
 
      virtual rapidjson::Value toJson(rapidjson::Document& doc) const;
 
      virtual void fromJson(rapidjson::Value& val);
 
      std::string status;
      std::string error_details;
      uint32_t rpc_version;
  };
 
  class FullMessage
  {
    public:
      ~FullMessage() { }
 
      FullMessage(FullMessage&& rhs) noexcept : doc(std::move(rhs.doc)) { }
 
      FullMessage(const std::string& json_string, bool request=false);
 
      std::string getJson();
 
      std::string getRequestType() const;
 
      rapidjson::Value& getMessage();
 
      rapidjson::Value getMessageCopy();
 
      rapidjson::Value& getID();
 
      void setID(rapidjson::Value& id);
 
      cryptonote::rpc::error getError();
 
      static FullMessage requestMessage(const std::string& request, Message* message);
      static FullMessage requestMessage(const std::string& request, Message* message, rapidjson::Value& id);
 
      static FullMessage responseMessage(Message* message);
      static FullMessage responseMessage(Message* message, rapidjson::Value& id);
 
      static FullMessage* timeoutMessage();
    private:
 
      FullMessage() = default;
 
      FullMessage(const std::string& request, Message* message);
      FullMessage(Message* message);
 
      rapidjson::Document doc;
  };
 
 
  // convenience functions for bad input
  std::string BAD_REQUEST(const std::string& request);
  std::string BAD_REQUEST(const std::string& request, rapidjson::Value& id);
 
  std::string BAD_JSON(const std::string& error_details);
 
 
}  // namespace rpc
 
}  // namespace cryptonote