| // |
| // Copyright(c) 2015 Gabi Melman. |
| // Distributed under the MIT License (http://opensource.org/licenses/MIT) |
| // |
| |
| #pragma once |
| |
| #ifndef SPDLOG_H |
| #include "spdlog/spdlog.h" |
| #endif |
| |
| #include "spdlog/sinks/base_sink.h" |
| |
| #include <array> |
| #include <string> |
| #include <syslog.h> |
| |
| namespace spdlog { |
| namespace sinks { |
| /** |
| * Sink that write to syslog using the `syscall()` library call. |
| * |
| * Locking is not needed, as `syslog()` itself is thread-safe. |
| */ |
| template<typename Mutex> |
| class syslog_sink : public base_sink<Mutex> |
| { |
| public: |
| // |
| explicit syslog_sink(std::string ident = "", int syslog_option = 0, int syslog_facility = LOG_USER) |
| : ident_(std::move(ident)) |
| { |
| priorities_[static_cast<size_t>(level::trace)] = LOG_DEBUG; |
| priorities_[static_cast<size_t>(level::debug)] = LOG_DEBUG; |
| priorities_[static_cast<size_t>(level::info)] = LOG_INFO; |
| priorities_[static_cast<size_t>(level::warn)] = LOG_WARNING; |
| priorities_[static_cast<size_t>(level::err)] = LOG_ERR; |
| priorities_[static_cast<size_t>(level::critical)] = LOG_CRIT; |
| priorities_[static_cast<size_t>(level::off)] = LOG_INFO; |
| |
| // set ident to be program name if empty |
| ::openlog(ident_.empty() ? nullptr : ident_.c_str(), syslog_option, syslog_facility); |
| } |
| |
| ~syslog_sink() override |
| { |
| ::closelog(); |
| } |
| |
| syslog_sink(const syslog_sink &) = delete; |
| syslog_sink &operator=(const syslog_sink &) = delete; |
| |
| protected: |
| void sink_it_(const details::log_msg &msg) override |
| { |
| ::syslog(syslog_prio_from_level(msg), "%s", fmt::to_string(msg.payload).c_str()); |
| } |
| |
| void flush_() override {} |
| |
| private: |
| std::array<int, 7> priorities_; |
| // must store the ident because the man says openlog might use the pointer as |
| // is and not a string copy |
| const std::string ident_; |
| |
| // |
| // Simply maps spdlog's log level to syslog priority level. |
| // |
| int syslog_prio_from_level(const details::log_msg &msg) const |
| { |
| return priorities_[static_cast<size_t>(msg.level)]; |
| } |
| }; |
| |
| using syslog_sink_mt = syslog_sink<std::mutex>; |
| using syslog_sink_st = syslog_sink<details::null_mutex>; |
| } // namespace sinks |
| |
| // Create and register a syslog logger |
| template<typename Factory = default_factory> |
| inline std::shared_ptr<logger> syslog_logger_mt( |
| const std::string &logger_name, const std::string &syslog_ident = "", int syslog_option = 0, int syslog_facility = (1 << 3)) |
| { |
| return Factory::template create<sinks::syslog_sink_mt>(logger_name, syslog_ident, syslog_option, syslog_facility); |
| } |
| |
| template<typename Factory = default_factory> |
| inline std::shared_ptr<logger> syslog_logger_st( |
| const std::string &logger_name, const std::string &syslog_ident = "", int syslog_option = 0, int syslog_facility = (1 << 3)) |
| { |
| return Factory::template create<sinks::syslog_sink_st>(logger_name, syslog_ident, syslog_option, syslog_facility); |
| } |
| } // namespace spdlog |