logger.h
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/*
This file is part of FlashMQ (https://www.flashmq.org)
Copyright (C) 2021 Wiebe Cazemier
FlashMQ is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, version 3.
FlashMQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public
License along with FlashMQ. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LOGGER_H
#define LOGGER_H
#include <stdio.h>
#include <stdarg.h>
#include <mutex>
#include <queue>
#include <thread>
#include "semaphore.h"
#include "flashmq_plugin.h"
int logSslError(const char *str, size_t len, void *u);
class LogLine
{
std::string line;
bool alsoToStdOut;
public:
LogLine(std::string &&line, bool alsoToStdOut);
LogLine(const char *s, size_t len, bool alsoToStdOut);
LogLine();
LogLine(const LogLine &other) = delete;
LogLine(LogLine &&other) = default;
LogLine &operator=(LogLine &&other) = default;
const char *c_str() const;
bool alsoLogToStdOut() const;
};
class Logger
{
static Logger *instance;
static std::string logPath;
int curLogLevel = LOG_ERR | LOG_WARNING | LOG_NOTICE | LOG_INFO | LOG_SUBSCRIBE | LOG_UNSUBSCRIBE ;
std::mutex logMutex;
std::queue<LogLine> lines;
sem_t linesPending;
std::thread writerThread;
bool running = true;
FILE *file = nullptr;
bool alsoLogToStd = true;
bool reload = false;
Logger();
~Logger();
std::string getLogLevelString(int level) const;
void reOpen();
void writeLog();
public:
static Logger *getInstance();
void logf(int level, const char *str, va_list args);
void logf(int level, const char *str, ...);
void queueReOpen();
void noLongerLogToStd();
void setLogPath(const std::string &path);
void setFlags(bool logDebug, bool logSubscriptions, bool quiet);
void quit();
};
#endif // LOGGER_H