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129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
#pragma once
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#include <memory>
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#include <llarp/util/time.hpp>
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#include "logstream.hpp"
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#include "logger_internal.hpp"
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namespace llarp
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{
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enum class LogType
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{
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Unknown = 0,
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File,
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Json,
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Syslog,
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};
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LogType
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LogTypeFromString(const std::string&);
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struct LogContext
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{
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using IOFunc_t = std::function<void(void)>;
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LogContext();
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LogLevel curLevel = eLogInfo;
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LogLevel startupLevel = eLogInfo;
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LogLevel runtimeLevel = eLogInfo;
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ILogStream_ptr logStream;
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std::string nodeName = "lokinet";
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static LogContext&
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Instance();
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void
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DropToRuntimeLevel();
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void
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RevertRuntimeLevel();
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/// A blocking call that will not return until any existing log functions have flushed.
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/// Should only be called in rare circumstances, such as when the program is about to exit.
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void
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ImmediateFlush();
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/// Initialize the logging system.
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///
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/// @param level is the new log level (below which log statements will be ignored)
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/// @param type is the type of logger to set up
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/// @param file is the file to log to (relevant for types File and Json)
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/// @param nickname is a tag to add to each log statement
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/// @param io is a callable that queues work that does io, async
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void
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Initialize(
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LogLevel level,
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LogType type,
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const std::string& file,
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const std::string& nickname,
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std::function<void(IOFunc_t)> io);
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};
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/// RAII type to turn logging off
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/// logging is suppressed as long as the silencer is in scope
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struct LogSilencer
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{
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LogSilencer();
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~LogSilencer();
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explicit LogSilencer(LogContext& ctx);
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private:
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LogContext& parent;
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ILogStream_ptr stream;
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};
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void
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SetLogLevel(LogLevel lvl);
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LogLevel
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GetLogLevel();
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/** internal */
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template <typename... TArgs>
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inline static void
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_log(LogLevel lvl, const char* fname, int lineno, TArgs&&... args) noexcept
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{
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auto& log = LogContext::Instance();
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if (log.curLevel > lvl || log.logStream == nullptr)
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return;
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std::ostringstream ss;
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if constexpr (sizeof...(args) > 0)
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LogAppend(ss, std::forward<TArgs>(args)...);
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log.logStream->AppendLog(lvl, fname, lineno, log.nodeName, ss.str());
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}
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inline void
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_log_noop() noexcept
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{}
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} // namespace llarp
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#define LogDebug(...) _log(llarp::eLogDebug, LOG_TAG, __LINE__, __VA_ARGS__)
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#define LogInfo(...) _log(llarp::eLogInfo, LOG_TAG, __LINE__, __VA_ARGS__)
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#define LogWarn(...) _log(llarp::eLogWarn, LOG_TAG, __LINE__, __VA_ARGS__)
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#define LogError(...) _log(llarp::eLogError, LOG_TAG, __LINE__, __VA_ARGS__)
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#define LogDebugTag(tag, ...) _log(llarp::eLogDebug, tag, __LINE__, __VA_ARGS__)
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#define LogInfoTag(tag, ...) _log(llarp::eLogInfo, tag, __LINE__, __VA_ARGS__)
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#define LogWarnTag(tag, ...) _log(llarp::eLogWarn, tag, __LINE__, __VA_ARGS__)
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#define LogErrorTag(tag, ...) _log(llarp::eLogError, tag, __LINE__, __VA_ARGS__)
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#define LogDebugExplicit(tag, line, ...) _log(llarp::eLogDebug, tag, line, __VA_ARGS__)
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#define LogInfoExplicit(tag, line, ...) _log(llarp::eLogInfo, tag, line __VA_ARGS__)
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#define LogWarnExplicit(tag, line, ...) _log(llarp::eLogWarn, tag, line, __VA_ARGS__)
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#define LogErrorExplicit(tag, line, ...) _log(llarp::eLogError, tag, line, __VA_ARGS__)
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// null-op Trace logging if this is a release build
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#ifdef NDEBUG
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#define LogTrace(...) _log_noop()
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#define LogTraceTag(tag, ...) _log_noop()
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#define LogTraceExplicit(tag, line, ...) _log_noop()
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#else
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#define LogTrace(...) _log(llarp::eLogTrace, LOG_TAG, __LINE__, __VA_ARGS__)
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#define LogTraceTag(tag, ...) _log(llarp::eLogTrace, tag, __LINE__, __VA_ARGS__)
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#define LogTraceExplicit(tag, line, ...) _log(llarp::eLogTrace, tag, line, __VA_ARGS__)
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#endif
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#ifndef LOG_TAG
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#define LOG_TAG "default"
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#endif
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