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// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: LGPL-2.1-or-later
//
// This file is part of libdnf: https://github.com/rpm-software-management/libdnf/
//
// Libdnf is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or
// (at your option) any later version.
//
// Libdnf 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with libdnf. If not, see <https://www.gnu.org/licenses/>.
#ifndef LIBDNF5_LOGGER_LOG_ROUTER_HPP
#define LIBDNF5_LOGGER_LOG_ROUTER_HPP
#include "logger.hpp"
#include "libdnf5/common/impl_ptr.hpp"
#include "libdnf5/defs.h"
#include <memory>
#include <vector>
namespace libdnf5 {
/// LogRouter is an implementation of logging class that forwards incoming logging messages to several other loggers.
/// Loggers can be addressed via index. Index is serial number of the logger starting from zero.
class LIBDNF_API LogRouter : public Logger {
public:
/// Constructs a new LogRouter instance with an empty set of destination loggers.
explicit LogRouter();
~LogRouter();
/// Constructs a new LogRouter instance and sets the destination loggers.
explicit LogRouter(std::vector<std::unique_ptr<Logger>> && loggers);
/// Moves (registers) the "logger" into the log router. It gets next free index number.
void add_logger(std::unique_ptr<Logger> && logger);
/// Returns pointer to the logger at the "index" position.
Logger * get_logger(size_t index);
/// Removes logger at the "index" position from LogRouter.
/// The array of the loggers is squeezed. Index of the loggers behind removed logger is decreased by one.
std::unique_ptr<Logger> release_logger(size_t index);
/// Swaps the logger at the "index" position with another "logger".
void swap_logger(std::unique_ptr<Logger> & logger, size_t index);
/// Returns number of loggers registered in LogRouter.
size_t get_loggers_count() const noexcept;
void log_line(Level level, const std::string & message) noexcept override;
void write(
const std::chrono::time_point<std::chrono::system_clock> & time,
pid_t pid,
Level level,
const std::string & message) noexcept override;
private:
class LIBDNF_LOCAL Impl;
ImplPtr<Impl> p_impl;
};
} // namespace libdnf5
#endif
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