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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2025
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/utils/TsFileLog.h"
#include "td/utils/common.h"
#include "td/utils/FileLog.h"
#include "td/utils/logging.h"
#include "td/utils/port/thread_local.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
#include <array>
#include <atomic>
#include <limits>
#include <mutex>
namespace td {
namespace detail {
class TsFileLog final : public LogInterface {
public:
Status init(string path, int64 rotate_threshold, bool redirect_stderr) {
path_ = std::move(path);
rotate_threshold_ = rotate_threshold;
redirect_stderr_ = redirect_stderr;
for (size_t i = 0; i < logs_.size(); i++) {
logs_[i].id = i;
}
return init_info(&logs_[0]);
}
void rotate() {
for (auto &info : logs_) {
if (info.is_inited.load(std::memory_order_acquire)) {
info.log.lazy_rotate();
}
}
}
private:
struct Info {
FileLog log;
std::atomic<bool> is_inited{false};
size_t id;
};
static constexpr size_t MAX_THREAD_ID = 128;
int64 rotate_threshold_ = 0;
bool redirect_stderr_ = false;
std::string path_;
std::array<Info, MAX_THREAD_ID> logs_;
std::mutex init_mutex_;
LogInterface *get_current_logger() {
auto *info = get_current_info();
if (!info->is_inited.load(std::memory_order_relaxed)) {
std::unique_lock<std::mutex> lock(init_mutex_);
if (!info->is_inited.load(std::memory_order_relaxed)) {
init_info(info).ensure();
}
}
return &info->log;
}
Info *get_current_info() {
return &logs_[get_thread_id()];
}
Status init_info(Info *info) {
TRY_STATUS(info->log.init(get_path(info), std::numeric_limits<int64>::max(), info->id == 0 && redirect_stderr_));
info->is_inited = true;
return Status::OK();
}
string get_path(const Info *info) const {
if (info->id == 0) {
return path_;
}
return PSTRING() << path_ << ".thread" << info->id << ".log";
}
void do_append(int log_level, CSlice slice) final {
get_current_logger()->do_append(log_level, slice);
}
vector<string> get_file_paths() final {
vector<string> res;
for (auto &log : logs_) {
res.push_back(get_path(&log));
}
return res;
}
};
} // namespace detail
Result<unique_ptr<LogInterface>> TsFileLog::create(string path, int64 rotate_threshold, bool redirect_stderr) {
auto res = make_unique<detail::TsFileLog>();
TRY_STATUS(res->init(std::move(path), rotate_threshold, redirect_stderr));
return std::move(res);
}
} // namespace td
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