98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
// Copyright(c) 2019 ZVYAGIN.Alexander@gmail.com
|
|
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
|
|
|
|
#pragma once
|
|
|
|
#include "spdlog/sinks/base_sink.h"
|
|
#include "spdlog/details/null_mutex.h"
|
|
#include "spdlog/details/synchronous_factory.h"
|
|
|
|
#include <systemd/sd-journal.h>
|
|
|
|
namespace spdlog {
|
|
namespace sinks {
|
|
|
|
/**
|
|
* Sink that write to systemd journal using the `sd_journal_send()` library call.
|
|
*
|
|
* Locking is not needed, as `sd_journal_send()` itself is thread-safe.
|
|
*/
|
|
template<typename Mutex>
|
|
class systemd_sink : public base_sink<Mutex>
|
|
{
|
|
public:
|
|
//
|
|
systemd_sink()
|
|
: syslog_levels_{/* spdlog::level::trace */ LOG_DEBUG,
|
|
/* spdlog::level::debug */ LOG_DEBUG,
|
|
/* spdlog::level::info */ LOG_INFO,
|
|
/* spdlog::level::warn */ LOG_WARNING,
|
|
/* spdlog::level::err */ LOG_ERR,
|
|
/* spdlog::level::critical */ LOG_CRIT,
|
|
/* spdlog::level::off */ LOG_INFO}
|
|
{}
|
|
|
|
~systemd_sink() override {}
|
|
|
|
systemd_sink(const systemd_sink &) = delete;
|
|
systemd_sink &operator=(const systemd_sink &) = delete;
|
|
|
|
protected:
|
|
std::array<int, 7> syslog_levels_;
|
|
|
|
void sink_it_(const details::log_msg &msg) override
|
|
{
|
|
int err;
|
|
|
|
size_t length = msg.payload.size();
|
|
// limit to max int
|
|
if (length > static_cast<size_t>(std::numeric_limits<int>::max()))
|
|
{
|
|
length = static_cast<size_t>(std::numeric_limits<int>::max());
|
|
}
|
|
|
|
// Do not send source location if not available
|
|
if (msg.source.empty())
|
|
{
|
|
// Note: function call inside '()' to avoid macro expansion
|
|
err = (sd_journal_send)(
|
|
"MESSAGE=%.*s", static_cast<int>(length), msg.payload.data(), "PRIORITY=%d", syslog_level(msg.level), nullptr);
|
|
}
|
|
else
|
|
{
|
|
err = (sd_journal_send)("MESSAGE=%.*s", static_cast<int>(length), msg.payload.data(), "PRIORITY=%d", syslog_level(msg.level),
|
|
"SOURCE_FILE=%s", msg.source.filename, "SOURCE_LINE=%d", msg.source.line, "SOURCE_FUNC=%s", msg.source.funcname, nullptr);
|
|
}
|
|
|
|
if (err)
|
|
{
|
|
SPDLOG_THROW(spdlog_ex("Failed writing to systemd", errno));
|
|
}
|
|
}
|
|
|
|
int syslog_level(level::level_enum l)
|
|
{
|
|
return syslog_levels_.at(static_cast<int>(l));
|
|
}
|
|
|
|
void flush_() override {}
|
|
};
|
|
|
|
using systemd_sink_mt = systemd_sink<std::mutex>;
|
|
using systemd_sink_st = systemd_sink<details::null_mutex>;
|
|
} // namespace sinks
|
|
|
|
// Create and register a syslog logger
|
|
template<typename Factory = spdlog::synchronous_factory>
|
|
inline std::shared_ptr<logger> systemd_logger_mt(const std::string &logger_name)
|
|
{
|
|
return Factory::template create<sinks::systemd_sink_mt>(logger_name);
|
|
}
|
|
|
|
template<typename Factory = spdlog::synchronous_factory>
|
|
inline std::shared_ptr<logger> systemd_logger_st(const std::string &logger_name)
|
|
{
|
|
return Factory::template create<sinks::systemd_sink_st>(logger_name);
|
|
}
|
|
} // namespace spdlog
|