106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/TsFileLog.h"
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#include "td/utils/common.h"
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#include "td/utils/FileLog.h"
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#include "td/utils/logging.h"
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#include "td/utils/port/thread_local.h"
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#include "td/utils/Slice.h"
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#include <array>
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#include <atomic>
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#include <limits>
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#include <mutex>
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namespace td {
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namespace detail {
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class TsFileLog : public LogInterface {
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public:
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Status init(string path, int64 rotate_threshold, bool redirect_stderr) {
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path_ = std::move(path);
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rotate_threshold_ = rotate_threshold;
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redirect_stderr_ = redirect_stderr;
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for (size_t i = 0; i < logs_.size(); i++) {
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logs_[i].id = i;
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}
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return init_info(&logs_[0]);
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}
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vector<string> get_file_paths() override {
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vector<string> res;
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for (auto &log : logs_) {
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res.push_back(get_path(&log));
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}
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return res;
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}
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void append(CSlice cslice, int log_level) override {
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get_current_logger()->append(cslice, log_level);
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}
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private:
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struct Info {
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FileLog log;
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std::atomic<bool> is_inited{false};
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size_t id;
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};
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static constexpr size_t MAX_THREAD_ID = 128;
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int64 rotate_threshold_;
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bool redirect_stderr_;
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std::string path_;
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std::array<Info, MAX_THREAD_ID> logs_;
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std::mutex init_mutex_;
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LogInterface *get_current_logger() {
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auto *info = get_current_info();
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if (!info->is_inited.load(std::memory_order_relaxed)) {
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std::unique_lock<std::mutex> lock(init_mutex_);
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if (!info->is_inited.load(std::memory_order_relaxed)) {
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init_info(info).ensure();
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}
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}
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return &info->log;
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}
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Info *get_current_info() {
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return &logs_[get_thread_id()];
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}
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Status init_info(Info *info) {
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TRY_STATUS(info->log.init(get_path(info), std::numeric_limits<int64>::max(), info->id == 0 && redirect_stderr_));
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info->is_inited = true;
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return Status::OK();
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}
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string get_path(const Info *info) const {
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if (info->id == 0) {
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return path_;
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}
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return PSTRING() << path_ << ".thread" << info->id << ".log";
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}
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void rotate() override {
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for (auto &info : logs_) {
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if (info.is_inited.load(std::memory_order_acquire)) {
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info.log.lazy_rotate();
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}
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}
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}
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};
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} // namespace detail
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Result<unique_ptr<LogInterface>> TsFileLog::create(string path, int64 rotate_threshold, bool redirect_stderr) {
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auto res = make_unique<detail::TsFileLog>();
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TRY_STATUS(res->init(path, rotate_threshold, redirect_stderr));
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return std::move(res);
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}
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} // namespace td
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