FileWriterCDF.cc
22.1 KB
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/**
* FileWriterCDF.cc
*
* Created on: 08 oct. 2014
* Author: AKKA
*/
#include "FileWriterCDF.hh"
#include "TimeUtil.hh"
#include "FileWriter.hh"
#include "ParamMgr.hh"
#include "DataSetMgr.hh"
#include "InstrumentMgr.hh"
#include "MissionMgr.hh"
#include <sstream>
#include <cstring>
#include <stdlib.h>
#include <limits.h>
#include <float.h>
#include <boost/cast.hpp>
#include <boost/filesystem.hpp>
namespace AMDA
{
namespace ParamOutputImpl
{
namespace Download
{
namespace FileWriter
{
#define CDF_TIME_VAR "AMDA_TIME"
using namespace AMDA::Info;
FileWriterCDF::FileWriterCDF(AMDA::Parameters::ParameterManager &pParameterManager) : FileWriter(pParameterManager),
_cdfid(NULL)
{
}
FileWriterCDF::~FileWriterCDF(void)
{
closeFile();
}
std::string FileWriterCDF::getExtension(void)
{
return "cdf";
}
void FileWriterCDF::closeFile(void)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid != NULL)
CDFcloseCDF(_cdfid);
_cdfid = NULL;
for (auto cdfVar : _cdfVarMap)
{
if (cdfVar.second.buffer != NULL)
{
free(cdfVar.second.buffer);
cdfVar.second.buffer = NULL;
}
if (cdfVar.second.validMin != NULL)
{
free(cdfVar.second.validMin);
cdfVar.second.validMin = NULL;
}
if (cdfVar.second.validMax != NULL)
{
free(cdfVar.second.validMax);
cdfVar.second.validMax = NULL;
}
}
_cdfVarMap.clear();
}
bool FileWriterCDF::createNewFile(std::string filePath, std::string filePrefix)
{
if (_cdfid != NULL)
{
closeFile();
}
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
CDFstatus status;
// remove old file if exist
remove(filePath.c_str());
// get File Name for Global attributes
boost::filesystem::path p(filePath);
_fileName = p.filename().c_str() ;
_filePrefix = filePrefix;
// CDFcreateCDF add automatically ".cdf" extension
status = CDFcreateCDF((char *)filePath.c_str(), &_cdfid);
return (status == CDF_OK);
}
bool FileWriterCDF::addParameter(ParamProperties *paramProp, AMDA::Common::ParameterIndexComponentList &indexList,
FileDataType type, bool isFirstParam, int dim1Size, int dim2Size, bool isTableParam)
{
if (isFirstParam)
{
if (!createCDFVar(CDF_TIME_VAR, DT_TIME, 1, 1, _cdfVarMap[CDF_TIME_VAR]))
return false;
writeTimeInfo();
}
return addCDFParameter(paramProp->getOutputId(), indexList, type, dim1Size, dim2Size, isTableParam);
}
bool FileWriterCDF::addCDFParameter(std::string outputId, AMDA::Common::ParameterIndexComponentList &indexList,
FileDataType type, int dim1Size, int dim2Size, bool isTableParam)
{
std::stringstream paramIdStream;
paramIdStream << outputId;
int varDim1Size = dim1Size;
int varDim2Size = dim2Size;
if ((type != DT_TIME) && !indexList.empty() && (dim1Size * dim2Size != (int)indexList.size()))
{
paramIdStream << "_" << indexList.size();
varDim1Size = indexList.size();
varDim2Size = 1;
}
std::map<std::string, ParamCDFVar>::iterator it = _cdfVarMap.find(outputId);
if (it != _cdfVarMap.end())
return true; // already exist
return createCDFVar(paramIdStream.str().c_str(), type,
varDim1Size, varDim2Size, _cdfVarMap[outputId], false, isTableParam);
}
bool FileWriterCDF::createCDFVar(const char *name, FileDataType type, long varDim1Size, long varDim2Size,
ParamCDFVar &cdfVar, bool isConst, bool isTableParam)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid == NULL)
return false;
cdfVar.dim1Size = varDim1Size;
cdfVar.dim2Size = varDim2Size;
cdfVar.isTableParam = isTableParam;
switch (type)
{
case DT_FLOAT:
cdfVar.type = CDF_FLOAT;
break;
case DT_SHORT:
cdfVar.type = CDF_INT2;
break;
case DT_INT:
cdfVar.type = CDF_INT4;
break;
case DT_DOUBLE:
case DT_LONGDOUBLE:
cdfVar.type = CDF_DOUBLE;
break;
case DT_LOGICAL:
cdfVar.type = CDF_UINT2;
break;
case DT_TIME:
switch (_outputFormatTime) {
case OutputFormatTime::FORMAT_OUTPUT_TIME_EPOCH16:
cdfVar.type = CDF_EPOCH16;
break;
case OutputFormatTime::FORMAT_OUTPUT_TIME_TT2000:
cdfVar.type = CDF_TIME_TT2000;
break;
case OutputFormatTime::FORMAT_OUTPUT_TIME_EPOCH:
default:
cdfVar.type = CDF_EPOCH;
}
break;
case DT_NONE:
cdfVar.type = CDF_CHAR;
break;
default:
return false;
}
cdfVar.recNum = 0;
long numDims;
long *dimSizes = NULL;
long *dimVarys = NULL;
if (varDim2Size > 1)
{
numDims = 2L;
dimSizes = new long[2];
dimSizes[0] = varDim1Size;
dimSizes[1] = varDim2Size;
dimVarys = new long[2];
dimVarys[0] = VARY;
dimVarys[1] = VARY;
}
else
{
numDims = (varDim1Size > 1) ? 1L : 0L;
dimSizes = new long[1];
dimSizes[0] = varDim1Size;
dimVarys = new long[1];
dimVarys[0] = VARY;
}
long recVary = {VARY};
long numElts = 1;
if (isConst)
recVary= {NOVARY};
CDFstatus status = CDFgetDataTypeSize(cdfVar.type, &cdfVar.numBytes);
if (status != CDF_OK)
{
return false;
}
cdfVar.buffer = malloc(varDim1Size * varDim2Size * cdfVar.numBytes * NB_RECORDS_BUFFER);
cdfVar.validMin = malloc(cdfVar.numBytes);
cdfVar.validMax = malloc(cdfVar.numBytes);
switch (cdfVar.type){
case CDF_FLOAT:
{
float validMin = -std::numeric_limits<float>::max();
float validMax = std::numeric_limits<float>::max();
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="F11.4";
}
break;
case CDF_INT2:
{
short validMin = -std::numeric_limits<short>::max();
short validMax = std::numeric_limits<short>::max();
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
case CDF_INT4:
{
int validMin = -std::numeric_limits<int>::max();
int validMax = std::numeric_limits<int>::max();
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
case CDF_DOUBLE:
{
double validMin = -std::numeric_limits<double>::max();
double validMax = std::numeric_limits<double>::max();
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="F14.3";
}
break;
case CDF_UINT2:
{
unsigned short validMin = 0;
unsigned short validMax = std::numeric_limits<unsigned short>::max();
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
case CDF_EPOCH16:
{
double validMin[2] = {0,0};
double validMax[2] = {0,0};
computeEPOCH16(1970,1,1,0,0,0,0,0,0,0,validMin);
computeEPOCH16(2050,12,31,23,59,59,999,999,999,999,validMax);
memcpy(cdfVar.validMin,validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
case CDF_TIME_TT2000:
{
long long validMin = computeTT2000(1970,1,1,TT2000END);
long long validMax = computeTT2000(2050,12,31,TT2000END);
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
case CDF_EPOCH:
{
double validMin = computeEPOCH(1970,1,1,0,0,0,0);
double validMax = computeEPOCH(2050,12,31,23,59,59,999);
memcpy(cdfVar.validMin,&validMin,cdfVar.numBytes);
memcpy(cdfVar.validMax,&validMax,cdfVar.numBytes);
cdfVar.format="I";
}
break;
}
status = CDFcreatezVar(_cdfid, name, cdfVar.type, numElts, numDims,
dimSizes, recVary, dimVarys, &cdfVar.varNum);
delete[] dimSizes;
delete[] dimVarys;
return (status == CDF_OK);
}
bool FileWriterCDF::isInfoInSeparateFile(bool /* separateInfoFile */, bool /* onlyOneInterval */, OutputStructure /* outputStructure */)
{
return false;
}
bool FileWriterCDF::writeError(std::string msg)
{
addAttribute("AMDA_ERROR", msg, GLOBAL_SCOPE);
return true;
}
bool FileWriterCDF::writeAMDAInfo(std::string version, std::string createdby, std::string acknowledgement)
{
addAttribute(AMDA_ABOUT, createdby, GLOBAL_SCOPE);
addAttribute(AMDA_VERSION, version, GLOBAL_SCOPE);
addAttribute(AMDA_ACKNOWLEDGEMENT, acknowledgement, GLOBAL_SCOPE);
return true;
}
bool FileWriterCDF::writeRequestInfo(std::string structure, std::string /* timeFormat */,
int timeResolution, std::string outputParams, std::string ttName)
{
addAttribute(REQUEST_STRUCTURE, structure, GLOBAL_SCOPE);
addAttribute(REQUEST_TIMEFORMAT, "EPOCH", GLOBAL_SCOPE);
if (timeResolution > 0)
{
std::stringstream timeRes;
timeRes << timeResolution;
addAttribute(REQUEST_TIMERES, timeRes.str(), GLOBAL_SCOPE);
}
addAttribute(REQUEST_OUTPUTPARAMS, outputParams, GLOBAL_SCOPE);
if (!ttName.empty())
addAttribute(REQUEST_TTNAME, ttName, GLOBAL_SCOPE);
return true;
}
bool FileWriterCDF::writeMissionInfo(MissionInfoSPtr missionInfo, long varNum)
{
if (missionInfo == nullptr)
return false;
// write info about mission
std::vector<std::pair<std::string, std::string>> infoMap = missionInfo->getInfoMap();
for (auto info : infoMap)
addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);
return true;
}
bool FileWriterCDF::writeInstrumentInfo(InstrumentInfoSPtr instrumentInfo, long varNum)
{
if (instrumentInfo == nullptr)
return false;
// write info about instrument
std::vector<std::pair<std::string, std::string>> infoMap = instrumentInfo->getInfoMap();
for (auto info : infoMap)
addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);
MissionInfoSPtr mission = MissionMgr::getInstance()->getMissionInfoFromId(instrumentInfo->getMissionId());
writeMissionInfo(mission, varNum);
return true;
}
bool FileWriterCDF::writeDatasetInfo(DataSetInfoSPtr datasetInfo, long varNum)
{
if (datasetInfo == nullptr)
return false;
// write info about datasetId
std::vector<std::pair<std::string, std::string>> infoMap = datasetInfo->getInfoMap();
for (auto info : infoMap)
addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);
InstrumentInfoSPtr instrumentInfo = InstrumentMgr::getInstance()->getInstrumentInfoFromId(datasetInfo->getInstrumentId());
writeInstrumentInfo(instrumentInfo, varNum);
return true;
}
bool FileWriterCDF::writeParameterInfo(ParamInfoSPtr parameterInfo, long varNum)
{
if (parameterInfo == nullptr)
return false;
std::vector<std::pair<std::string, std::string>> infoMap = parameterInfo->getInfoMap(&_parameterManager);
for (auto info : infoMap)
addAttribute(info.first, info.second, VARIABLE_SCOPE, varNum);
DataSetInfoSPtr dataSetInfo = DataSetMgr::getInstance()->getDataSetInfoFromId(parameterInfo->getDatasetId());
writeDatasetInfo(dataSetInfo, varNum);
return true;
}
bool FileWriterCDF::writeTableParamsInfo(std::vector<std::string> tableParams, int level)
{
if (tableParams.empty())
return false;
for (auto tableId : tableParams)
{
// get current param info
AMDA::Info::ParamInfoSPtr tableInfo = AMDA::Info::ParamMgr::getInstance()->getParamInfoFromId(tableId);
std::vector<std::pair<std::string, std::string>> tableInfoMap = tableInfo->getTableInfoMap(&_parameterManager);
for (auto info : tableInfoMap)
addAttribute(info.first, info.second, VARIABLE_SCOPE, level);
DataSetInfoSPtr dataSetInfo = DataSetMgr::getInstance()->getDataSetInfoFromId(tableInfo->getDatasetId());
writeDatasetInfo(dataSetInfo, level);
}
return true;
}
bool FileWriterCDF::writeParamsInfo(ParamPropertiesList ¶mPropertiesList, OutputStructure outputStructure,
std::string currentParamId)
{
std::set<std::pair<std::string, ParamInfoSPtr>, FileWriter::cmpParamInfoStruct> baseParamsInfoList;
std::set<std::pair<std::string, ParamInfoSPtr>, FileWriter::cmpParamInfoStruct> derivedParamsInfoList;
// sort parameters info
for (auto paramProperties : paramPropertiesList)
{
if ((outputStructure == ONE_FILE_PER_PARAMETER_PER_INTERVAL) &&
(currentParamId != paramProperties->getOutputId()))
// add info only for current parameter
continue;
sortParametersInfoByType(paramProperties->getOutputId(),
baseParamsInfoList, derivedParamsInfoList);
}
// write derived parameters info
for (auto paramInfo : derivedParamsInfoList)
{
std::map<std::string, ParamCDFVar>::iterator it = _cdfVarMap.find(paramInfo.first);
if (it == _cdfVarMap.end())
{
createCDFVar(paramInfo.first.c_str(), DT_NONE, 1, 1,
_cdfVarMap[paramInfo.first]);
addAttribute("AMDA_INFO", "Derived parameter description. No data output.", VARIABLE_SCOPE, _cdfVarMap[paramInfo.first].varNum);
}
writeParameterInfo(paramInfo.second, _cdfVarMap[paramInfo.first].varNum);
}
// write base parameters info
for (auto paramInfo : baseParamsInfoList)
{
std::map<std::string, ParamCDFVar>::iterator it = _cdfVarMap.find(paramInfo.first);
if (it == _cdfVarMap.end())
{
createCDFVar(paramInfo.first.c_str(), DT_NONE, 1, 1,
_cdfVarMap[paramInfo.first]);
addAttribute("AMDA_INFO", "Base parameter description. No data output.", VARIABLE_SCOPE, _cdfVarMap[paramInfo.first].varNum);
}
writeParameterInfo(paramInfo.second, _cdfVarMap[paramInfo.first].varNum);
}
return true;
}
bool FileWriterCDF::writeIntervalInfo(std::string startTime, std::string stopTime, bool isSeveralIntervals)
{
if (!isSeveralIntervals)
{
addAttribute(INTERVAL_START, startTime, GLOBAL_SCOPE);
addAttribute(INTERVAL_STOP, stopTime, GLOBAL_SCOPE);
return true;
}
else
{
addAttribute(INTERVAL_MIN_START, startTime, GLOBAL_SCOPE);
addAttribute(INTERVAL_MAX_STOP, stopTime, GLOBAL_SCOPE);
return true;
}
}
bool FileWriterCDF::addAttribute(std::string attName, std::string attVal,
long scope, long varNum)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid == NULL)
return false;
CDFstatus status;
long attNum = CDFgetAttrNum(_cdfid, (char *)attName.c_str());
if (attNum < 0)
{
status = CDFcreateAttr(_cdfid, (char *)attName.c_str(), scope, &attNum);
if (status != CDF_OK)
return false;
}
if (scope == GLOBAL_SCOPE)
status = CDFputAttrgEntry(_cdfid, attNum, 0, CDF_CHAR, attVal.size(), (void *)attVal.c_str());
else
status = CDFputAttrzEntry(_cdfid, attNum, varNum, CDF_CHAR, attVal.size(), (void *)attVal.c_str());
return (status == CDF_OK);
}
bool FileWriterCDF::addAttribute(std::string attName, double attVal,
long scope, long varNum)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid == NULL)
return false;
CDFstatus status;
long attNum = CDFgetAttrNum(_cdfid, (char *)attName.c_str());
if (attNum < 0)
{
status = CDFcreateAttr(_cdfid, (char *)attName.c_str(), scope, &attNum);
if (status != CDF_OK)
return false;
}
if (scope == GLOBAL_SCOPE)
status = CDFputAttrgEntry(_cdfid, attNum, 0, CDF_DOUBLE, 1, (void *)&attVal);
else
status = CDFputAttrzEntry(_cdfid, attNum, varNum, CDF_DOUBLE, 1, (void *)&attVal);
return (status == CDF_OK);
}
bool FileWriterCDF::addAttribute(std::string attName, void* attBuffer,
long scope, long type, long varNum)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid == NULL)
return false;
CDFstatus status;
long attNum = CDFgetAttrNum(_cdfid, (char *)attName.c_str());
if (attNum < 0)
{
status = CDFcreateAttr(_cdfid, (char *)attName.c_str(), scope, &attNum);
if (status != CDF_OK)
return false;
}
if (scope == GLOBAL_SCOPE)
status = CDFputAttrgEntry(_cdfid, attNum, 0, type, 1, attBuffer);
else
status = CDFputAttrzEntry(_cdfid, attNum, varNum, type, 1, attBuffer);
return (status == CDF_OK);
}
bool FileWriterCDF::writeTimeData(std::string /* paramId */, double data, OutputFormatTime /* timeFormat */, bool isFirstParam)
{
if (_cdfid == NULL)
return false;
if (!isFirstParam)
return true;
switch (_outputFormatTime) {
case OutputFormatTime::FORMAT_OUTPUT_TIME_EPOCH16:
{
double epochTime;
UnixTimetoEPOCH16(&data, &epochTime, 1);
return writeOneData(CDF_TIME_VAR, 0, &epochTime);
}
case OutputFormatTime::FORMAT_OUTPUT_TIME_TT2000:
{
long long epochTime = 0;
UnixTimetoTT2000(&data, &epochTime, 1);
return writeOneData(CDF_TIME_VAR, 0, &epochTime);
}
case OutputFormatTime::FORMAT_OUTPUT_TIME_EPOCH:
default:
{
double epochTime;
UnixTimetoEPOCH(&data, &epochTime, 1);
return writeOneData(CDF_TIME_VAR, 0, &epochTime);
}
}
}
void FileWriterCDF::writeTimeInfo() {}
bool FileWriterCDF::writeOneData(std::string paramId, int varIndex, void *data)
{
if (_cdfid == NULL)
return false;
if (_cdfVarMap[paramId].varNum < 0)
return false;
void *pos = _cdfVarMap[paramId].buffer;
pos = static_cast<char *>(pos) + _cdfVarMap[paramId].bufferNbRec * _cdfVarMap[paramId].dim1Size * _cdfVarMap[paramId].dim2Size * _cdfVarMap[paramId].numBytes + varIndex * _cdfVarMap[paramId].numBytes;
memcpy(pos, data, _cdfVarMap[paramId].numBytes);
return true;
}
bool FileWriterCDF::flushData(std::string paramId, bool isFirstParam)
{
boost::mutex::scoped_lock scoped_lock(ParameterManager::mutexCDFLib);
if (_cdfid == NULL)
return false;
if (_cdfVarMap[paramId].varNum < 0)
return false;
CDFstatus status;
if (isFirstParam)
{
if (_cdfVarMap[CDF_TIME_VAR].varNum < 0)
return false;
if (_cdfVarMap[CDF_TIME_VAR].bufferNbRec > 0)
{
status = CDFputzVarRangeRecordsByVarID(_cdfid, _cdfVarMap[CDF_TIME_VAR].varNum, _cdfVarMap[CDF_TIME_VAR].lastPushRec,
_cdfVarMap[CDF_TIME_VAR].lastPushRec + _cdfVarMap[CDF_TIME_VAR].bufferNbRec - 1, _cdfVarMap[CDF_TIME_VAR].buffer);
if (status != CDF_OK)
{
return false;
}
_cdfVarMap[CDF_TIME_VAR].lastPushRec += (_cdfVarMap[CDF_TIME_VAR].bufferNbRec);
_cdfVarMap[CDF_TIME_VAR].bufferNbRec = 0;
}
}
if (_cdfVarMap[paramId].bufferNbRec > 0)
{
status = CDFputzVarRangeRecordsByVarID(_cdfid, _cdfVarMap[paramId].varNum, _cdfVarMap[paramId].lastPushRec,
_cdfVarMap[paramId].lastPushRec + _cdfVarMap[paramId].bufferNbRec - 1, _cdfVarMap[paramId].buffer);
if (status != CDF_OK)
{
return false;
}
_cdfVarMap[paramId].lastPushRec += (_cdfVarMap[paramId].bufferNbRec);
_cdfVarMap[paramId].bufferNbRec = 0;
}
return true;
}
bool FileWriterCDF::writeFloatData(std::string paramId, int varIndex, float data, bool /* precision */)
{
return writeOneData(paramId, varIndex, &data);
}
bool FileWriterCDF::writeShortData(std::string paramId, int varIndex, short data, bool /* precision */)
{
return writeOneData(paramId, varIndex, &data);
}
bool FileWriterCDF::writeIntData(std::string paramId, int varIndex, int data, bool /* precision */)
{
return writeOneData(paramId, varIndex, &data);
}
bool FileWriterCDF::writeDoubleData(std::string paramId, int varIndex, double data, bool /* precision */)
{
return writeOneData(paramId, varIndex, &data);
}
bool FileWriterCDF::writeLongDoubleData(std::string paramId, int varIndex, long double data, bool /* precision */)
{
// convert long double to double
double doubleData = boost::numeric_cast<double>(data);
return writeOneData(paramId, varIndex, &doubleData);
}
bool FileWriterCDF::writeLogicalData(std::string paramId, int varIndex, AMDA::Parameters::LogicalData data, bool /* precision */)
{
// convert LogicalData to 2-byte unsigned integer
unsigned short uShortData;
switch (data)
{
case AMDA::Parameters::LogicalData::False:
uShortData = 0;
break;
case AMDA::Parameters::LogicalData::True:
uShortData = 1;
break;
case AMDA::Parameters::LogicalData::NaN:
uShortData = 2;
break;
default:
return false;
}
return writeOneData(paramId, varIndex, &uShortData);
}
bool FileWriterCDF::goToNextRecord(std::string paramId, bool isFirstParam)
{
++_cdfVarMap[paramId].recNum;
++_cdfVarMap[paramId].bufferNbRec;
if (isFirstParam)
{
++_cdfVarMap[CDF_TIME_VAR].recNum;
++_cdfVarMap[CDF_TIME_VAR].bufferNbRec;
}
if (_cdfVarMap[paramId].bufferNbRec >= NB_RECORDS_BUFFER - 1)
{
return flushData(paramId, isFirstParam);
}
return true;
}
bool FileWriterCDF::finalize(bool /* isInfoFile */)
{
// nothing to do
return true;
}
} /* namespace FileWriter */
} /* namespace Download */
} /* namespace ParamOutputImpl */
} /* namespace AMDA */