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