Skip to content

S
spdlog
Commit 4df28728 authored by gabime's avatar gabime
Browse files
Options

clang-format

parent f14a4c0b
Hide whitespace changes
Inline Side-by-side
Showing with 154 additions and 154 deletions
include/spdlog/sinks/rotating_file_sink.h
View file @ 4df28728
//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
#pragma once
#ifndef SPDLOG_H
#error "spdlog.h must be included before this file."
#endif
#include "spdlog/details/file_helper.h"
#include "spdlog/details/null_mutex.h"
#include "spdlog/fmt/fmt.h"
#include "spdlog/sinks/base_sink.h"
#include <cerrno>
#include <chrono>
#include <ctime>
#include <mutex>
#include <string>
#include <tuple>
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)
: base_filename_(std::move(base_filename))
, max_size_(max_size)
, max_files_(max_files)
{
file_helper_.open(calc_filename(base_filename_, 0));
current_size_ = file_helper_.size(); // expensive. called only once
}
// calc filename according to index and file extension if exists.
// e.g. calc_filename("logs/mylog.txt, 3) => "logs/mylog.3.txt".
static filename_t calc_filename(const filename_t &filename, std::size_t index)
{
typename std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::memory_buffer, fmt::wmemory_buffer>::type w;
if (index != 0u)
{
filename_t basename, ext;
std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
fmt::format_to(w, SPDLOG_FILENAME_T("{}.{}{}"), basename, index, ext);
}
else
{
fmt::format_to(w, SPDLOG_FILENAME_T("{}"), filename);
}
return fmt::to_string(w);
}
protected:
void sink_it_(const details::log_msg &msg) override
{
fmt::memory_buffer formatted;
sink::formatter_->format(msg, formatted);
current_size_ += formatted.size();
if (current_size_ > max_size_)
{
rotate_();
current_size_ = formatted.size();
}
file_helper_.write(formatted);
}
void flush_() override
{
file_helper_.flush();
}
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_()
{
using details::os::filename_to_str;
file_helper_.close();
for (auto i = max_files_; i > 0; --i)
{
filename_t src = calc_filename(base_filename_, i - 1);
if (!details::file_helper::file_exists(src))
{
continue;
}
filename_t target = calc_filename(base_filename_, i);
if (!rename_file(src, target))
{
// if failed try again after a small delay.
// this is a workaround to a windows issue, where very high rotation
// rates can cause the rename to fail with permission denied (because of antivirus?).
details::os::sleep_for_millis(100);
if (!rename_file(src, target))
{
file_helper_.reopen(true); // truncate the log file anyway to prevent it to grow beyond its limit!
throw spdlog_ex(
"rotating_file_sink: failed renaming " + filename_to_str(src) + " to " + filename_to_str(target), errno);
}
}
}
file_helper_.reopen(true);
}
// 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)
{
// try to delete the target file in case it already exists.
(void)details::os::remove(target_filename);
return details::os::rename(src_filename, target_filename) == 0;
}
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 = default_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)
{
return Factory::template create<sinks::rotating_file_sink_mt>(logger_name, filename, max_file_size, max_files);
}
template<typename Factory = default_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)
{
return Factory::template create<sinks::rotating_file_sink_st>(logger_name, filename, max_file_size, max_files);
}
} // namespace spdlog
//
// Copyright(c) 2015 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
#pragma once
#ifndef SPDLOG_H
#error "spdlog.h must be included before this file."
#endif
#include "spdlog/details/file_helper.h"
#include "spdlog/details/null_mutex.h"
#include "spdlog/fmt/fmt.h"
#include "spdlog/sinks/base_sink.h"
#include <cerrno>
#include <chrono>
#include <ctime>
#include <mutex>
#include <string>
#include <tuple>
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)
: base_filename_(std::move(base_filename))
, max_size_(max_size)
, max_files_(max_files)
{
file_helper_.open(calc_filename(base_filename_, 0));
current_size_ = file_helper_.size(); // expensive. called only once
}
// calc filename according to index and file extension if exists.
// e.g. calc_filename("logs/mylog.txt, 3) => "logs/mylog.3.txt".
static filename_t calc_filename(const filename_t &filename, std::size_t index)
{
typename std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::memory_buffer, fmt::wmemory_buffer>::type w;
if (index != 0u)
{
filename_t basename, ext;
std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
fmt::format_to(w, SPDLOG_FILENAME_T("{}.{}{}"), basename, index, ext);
}
else
{
fmt::format_to(w, SPDLOG_FILENAME_T("{}"), filename);
}
return fmt::to_string(w);
}
protected:
void sink_it_(const details::log_msg &msg) override
{
fmt::memory_buffer formatted;
sink::formatter_->format(msg, formatted);
current_size_ += formatted.size();
if (current_size_ > max_size_)
{
rotate_();
current_size_ = formatted.size();
}
file_helper_.write(formatted);
}
void flush_() override
{
file_helper_.flush();
}
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_()
{
using details::os::filename_to_str;
file_helper_.close();
for (auto i = max_files_; i > 0; --i)
{
filename_t src = calc_filename(base_filename_, i - 1);
if (!details::file_helper::file_exists(src))
{
continue;
}
filename_t target = calc_filename(base_filename_, i);
if (!rename_file(src, target))
{
// if failed try again after a small delay.
// this is a workaround to a windows issue, where very high rotation
// rates can cause the rename to fail with permission denied (because of antivirus?).
details::os::sleep_for_millis(100);
if (!rename_file(src, target))
{
file_helper_.reopen(true); // truncate the log file anyway to prevent it to grow beyond its limit!
throw spdlog_ex(
"rotating_file_sink: failed renaming " + filename_to_str(src) + " to " + filename_to_str(target), errno);
}
}
}
file_helper_.reopen(true);
}
// 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)
{
// try to delete the target file in case it already exists.
(void)details::os::remove(target_filename);
return details::os::rename(src_filename, target_filename) == 0;
}
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 = default_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)
{
return Factory::template create<sinks::rotating_file_sink_mt>(logger_name, filename, max_file_size, max_files);
}
template<typename Factory = default_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)
{
return Factory::template create<sinks::rotating_file_sink_st>(logger_name, filename, max_file_size, max_files);
}
} // namespace spdlog
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment