DRCEOutputJsonMessage.cpp

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#include <Poco/JSON/Object.h>
#include <Poco/JSON/Array.h>
#include <Poco/JSON/JSON.h>
#include <Poco/JSON/Stringifier.h>
#include <Poco/JSON/Parser.h>
#include <Poco/JSON/JSONException.h>
#include <Poco/Dynamic/Var.h>

#include "DRCEError.hpp"
#include "DRCEOutputJsonMessage.hpp"

namespace HCE
{
namespace drce
{
//-----------------------------------------------------------------------------
DRCEOutputJsonMessage::DRCEOutputJsonMessage(const std::string& json)
:inherited(), errorMessage(""), time(0), data("")
{
  if (!json.empty())
    unserialize(json);
}
//-----------------------------------------------------------------------------
void DRCEOutputJsonMessage::clear(void)
{
  _isError = false;
  errorCode = NO_ERROR;
  errorMsg.clear();
  errorMessage.clear();
  time = 0;
  data.clear();
}
//-----------------------------------------------------------------------------
bool DRCEOutputJsonMessage::serialize(std::string& json)
{
  try
  {
    Poco::JSON::Object::Ptr obj = new Poco::JSON::Object();

    obj->set(drce_json_message_const::errorCode, errorCode);
    obj->set(drce_json_message_const::errorMessage, errorMessage);
    obj->set(drce_json_message_const::elapsedTime, time);
    obj->set(drce_json_message_const::responseBody, data);

    std::stringstream ostr;
    Poco::JSON::Stringifier::stringify(obj, ostr);
    json = ostr.str();
    _isError = false;
  }
  catch(std::exception& e)
  {
    _isError = true;
    errorMsg = e.what();
    errorCode = ERROR_SERIALIZE;
  }
  return !_isError;
}
//-----------------------------------------------------------------------------
bool DRCEOutputJsonMessage::unserialize(const std::string& json)
{
  clear();

  try
  {
    Poco::JSON::Parser parser;
    Poco::Dynamic::Var res = parser.parse(json);
    Poco::JSON::Object::Ptr obj = res.extract<Poco::JSON::Object::Ptr>();

    Poco::Dynamic::Var tmp = obj->get(drce_json_message_const::errorCode);
    errorCode = convertVarToNumeric<unsigned int>(tmp, 0);

    tmp = obj->get(drce_json_message_const::errorMessage);
    if (tmp.isString())
      errorMessage = tmp.convert<std::string>();

    tmp = obj->get(drce_json_message_const::elapsedTime);
    time = convertVarToNumeric(tmp, 0);

    tmp = obj->get(drce_json_message_const::responseBody);
    if (tmp.isString())
      data = tmp.convert<std::string>();

    _isError = false;
  }
  catch(Poco::JSON::JSONException& e)
  {
    _isError = true;
    errorMsg = e.message();
    errorCode = ERROR_UNSERIALIZE;
  }
  catch(Poco::Exception& e)
  {
    _isError = true;
    errorMsg = e.message();
    errorCode = ERROR_UNSERIALIZE;
  }
  return !_isError;
}
//-----------------------------------------------------------------------------
std::istream& operator>>(std::istream& is, DRCEOutputJsonMessage& outputJsonMessage)
{
  std::string json;
  is.seekg(0, std::ios::end);
  json.resize(is.tellg());
  is.seekg(0, std::ios::beg);
  is.read(const_cast<char*>(json.c_str()), json.size());
  outputJsonMessage.unserialize(json);
  return is;
}
//-----------------------------------------------------------------------------
std::ostream& operator<<(std::ostream& os, const DRCEOutputJsonMessage& outputJsonMessage)
{
  std::string json;
  const_cast<DRCEOutputJsonMessage&>(outputJsonMessage).serialize(json);
  return os << json;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
} // namespace drce
} // namespace HCE