// 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); 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) { return Factory::template create<sinks::rotating_file_sink_mt>(logger_name, filename, max_file_size, max_files, rotate_on_open); } 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) { return Factory::template create<sinks::rotating_file_sink_st>(logger_name, filename, max_file_size, max_files, rotate_on_open); } } // namespace spdlog #ifdef SPDLOG_HEADER_ONLY #include "rotating_file_sink-inl.h" #endif