opm-simulators/opm/simulators/utils/ParallelFileMerger.hpp
2021-05-05 11:59:18 +02:00

80 lines
2.5 KiB
C++

/*
Copyright 2016 Dr. Blatt - HPC-Simulation-Software & Services
Copyright 2016 STATOIL AS.
This file is part of the Open Porous Media project (OPM).
OPM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OPM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OPM. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OPM_PARALLELFILEMERGER_HEADER_INCLUDED
#define OPM_PARALLELFILEMERGER_HEADER_INCLUDED
#include <fstream>
#include <memory>
#include <regex>
#include <string>
#include <opm/common/utility/FileSystem.hpp>
namespace Opm
{
namespace detail
{
namespace fs = ::Opm::filesystem;
/// \brief A functor that merges multiple files of a parallel run to one file.
///
/// Without care multiple processes might log messages in a parallel run.
/// Non-root processes will do that to seperate files
/// <basename>.<rank>.<extension. This functor will append those file
/// to usual ones and delete the other files.
class ParallelFileMerger
{
public:
/// \brief Constructor
/// \param output_dir The output directory to use for reading/Writing.
/// \param deckname The name of the deck.
ParallelFileMerger(const fs::path& output_dir,
const std::string& deckname,
bool show_fallout = false);
void operator()(const fs::path& file);
private:
/// \brief Append contents of a file to a stream
/// \brief of The output stream to use.
/// \brief file The file whose content to append.
/// \brief rank The rank that wrote the file.
void appendFile(std::ofstream& of, const fs::path& file, const std::string& rank);
/// \brief Regex to capture *.DBG
std::regex debugFileRegex_;
/// \brief Regex to capture *.PRT
std::regex logFileRegex_;
/// \brief Regex to capture CASENAME.[0-9]+.[A-Z]+
std::regex fileWarningRegex_;
/// \brief Stream to *.DBG file
std::unique_ptr<std::ofstream> debugStream_;
/// \brief Stream to *.PRT file
std::unique_ptr<std::ofstream> logStream_;
/// \brief Whether to show any logging fallout
bool show_fallout_;
};
} // end namespace detail
} // end namespace Opm
#endif // end header guard