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// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
#pragma once
#include <spdlog/sinks/base_sink.h>
#include <spdlog/details/file_helper.h>
#include <spdlog/details/null_mutex.h>
#include <spdlog/details/synchronous_factory.h>
#include <chrono>
#include <mutex>
#include <string>
namespace spdlog {
namespace sinks {
//
// Rotating file sink based on size
//
template<typename Mutex>
class rotating_file_sink final : public base_sink<Mutex>
{
public:
rotating_file_sink(filename_t base_filename, std::size_t max_size, std::size_t max_files, bool rotate_on_open = false,
const file_event_handlers &event_handlers = {});
static filename_t calc_filename(const filename_t &filename, std::size_t index);
filename_t filename();
protected:
void sink_it_(const details::log_msg &msg) override;
void flush_() override;
private:
// Rotate files:
// log.txt -> log.1.txt
// log.1.txt -> log.2.txt
// log.2.txt -> log.3.txt
// log.3.txt -> delete
void rotate_();
// delete the target if exists, and rename the src file to target
// return true on success, false otherwise.
bool rename_file_(const filename_t &src_filename, const filename_t &target_filename);
filename_t base_filename_;
std::size_t max_size_;
std::size_t max_files_;
std::size_t current_size_;
details::file_helper file_helper_;
};
using rotating_file_sink_mt = rotating_file_sink<std::mutex>;
using rotating_file_sink_st = rotating_file_sink<details::null_mutex>;
} // namespace sinks
//
// factory functions
//
template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> rotating_logger_mt(const std::string &logger_name, const filename_t &filename, size_t max_file_size,
size_t max_files, bool rotate_on_open = false, const file_event_handlers &event_handlers = {})
{
return Factory::template create<sinks::rotating_file_sink_mt>(
logger_name, filename, max_file_size, max_files, rotate_on_open, event_handlers);
}
template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> rotating_logger_st(const std::string &logger_name, const filename_t &filename, size_t max_file_size,
size_t max_files, bool rotate_on_open = false, const file_event_handlers &event_handlers = {})
{
return Factory::template create<sinks::rotating_file_sink_st>(
logger_name, filename, max_file_size, max_files, rotate_on_open, event_handlers);
}
} // namespace spdlog
#ifdef SPDLOG_HEADER_ONLY
# include "rotating_file_sink-inl.h"
#endif
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