136 lines
4.3 KiB
C++
136 lines
4.3 KiB
C++
//
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// Copyright(c) 2015 Gabi Melman.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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//
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#pragma once
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#ifndef SPDLOG_H
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#include "spdlog/spdlog.h"
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#endif
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#include <chrono>
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#include <cstdio>
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#include <ctime>
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#include <mutex>
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#include <string>
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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/fmt/fmt.h"
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#include "spdlog/sinks/base_sink.h"
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namespace spdlog {
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namespace sinks {
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/*
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* Generator of daily log file names in format basename.YYYY-MM-DD.ext
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*/
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struct daily_filename_calculator {
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// Create filename for the form basename.YYYY-MM-DD
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static filename_t calc_filename(const filename_t &filename,
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const tm &now_tm) {
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filename_t basename, ext;
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std::tie(basename, ext) =
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details::file_helper::split_by_extension(filename);
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std::conditional<std::is_same<filename_t::value_type, char>::value,
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fmt::memory_buffer, fmt::wmemory_buffer>::type w;
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fmt::format_to(w, SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}"), basename,
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now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday,
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ext);
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return fmt::to_string(w);
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}
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};
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/*
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* Rotating file sink based on date. rotates at midnight
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*/
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template <typename Mutex, typename FileNameCalc = daily_filename_calculator>
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class daily_file_sink final : public base_sink<Mutex> {
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public:
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// create daily file sink which rotates on given time
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daily_file_sink(filename_t base_filename, int rotation_hour,
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int rotation_minute, bool truncate = false)
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: base_filename_(std::move(base_filename)),
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rotation_h_(rotation_hour),
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rotation_m_(rotation_minute),
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truncate_(truncate) {
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if (rotation_hour < 0 || rotation_hour > 23 || rotation_minute < 0 ||
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rotation_minute > 59) {
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throw spdlog_ex("daily_file_sink: Invalid rotation time in ctor");
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}
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auto now = log_clock::now();
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file_helper_.open(FileNameCalc::calc_filename(base_filename_, now_tm(now)),
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truncate_);
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rotation_tp_ = next_rotation_tp_();
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}
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protected:
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void sink_it_(const details::log_msg &msg) override {
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if (msg.time >= rotation_tp_) {
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file_helper_.open(
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FileNameCalc::calc_filename(base_filename_, now_tm(msg.time)),
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truncate_);
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rotation_tp_ = next_rotation_tp_();
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}
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fmt::memory_buffer formatted;
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sink::formatter_->format(msg, formatted);
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file_helper_.write(formatted);
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}
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void flush_() override { file_helper_.flush(); }
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private:
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tm now_tm(log_clock::time_point tp) {
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time_t tnow = log_clock::to_time_t(tp);
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return spdlog::details::os::localtime(tnow);
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}
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log_clock::time_point next_rotation_tp_() {
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auto now = log_clock::now();
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tm date = now_tm(now);
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date.tm_hour = rotation_h_;
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date.tm_min = rotation_m_;
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date.tm_sec = 0;
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auto rotation_time = log_clock::from_time_t(std::mktime(&date));
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if (rotation_time > now) {
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return rotation_time;
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}
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return {rotation_time + std::chrono::hours(24)};
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}
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filename_t base_filename_;
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int rotation_h_;
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int rotation_m_;
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log_clock::time_point rotation_tp_;
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details::file_helper file_helper_;
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bool truncate_;
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};
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using daily_file_sink_mt = daily_file_sink<std::mutex>;
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using daily_file_sink_st = daily_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 = default_factory>
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inline std::shared_ptr<logger> daily_logger_mt(const std::string &logger_name,
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const filename_t &filename,
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int hour = 0, int minute = 0,
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bool truncate = false) {
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return Factory::template create<sinks::daily_file_sink_mt>(
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logger_name, filename, hour, minute, truncate);
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}
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template <typename Factory = default_factory>
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inline std::shared_ptr<logger> daily_logger_st(const std::string &logger_name,
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const filename_t &filename,
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int hour = 0, int minute = 0,
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bool truncate = false) {
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return Factory::template create<sinks::daily_file_sink_st>(
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logger_name, filename, hour, minute, truncate);
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}
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} // namespace spdlog
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