log.hpp

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/*******************************************************************************
* Copyright (C) 2017 Eddie Carle [eddie@isatec.ca]                             *
*                                                                              *
* This file is part of fastcgi++.                                              *
*                                                                              *
* fastcgi++ is free software: you can redistribute it and/or modify it under   *
* the terms of the GNU Lesser General Public License as  published by the Free *
* Software Foundation, either version 3 of the License, or (at your option)    *
* any later version.                                                           *
*                                                                              *
* fastcgi++ 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 Lesser General Public License for     *
* more details.                                                                *
*                                                                              *
* You should have received a copy of the GNU Lesser General Public License     *
* along with fastcgi++.  If not, see <http://www.gnu.org/licenses/>.           *
*******************************************************************************/

#ifndef FASTCGIPP_LOG_HPP
#define FASTCGIPP_LOG_HPP

#include "fastcgi++/config.hpp"

#include <ostream>
#include <mutex>
#include <cstdlib>
#include <string>

namespace Fastcgipp
{
    namespace Logging
    {
        extern std::wostream* logstream;

        extern std::mutex mutex;

        extern std::wstring hostname;

        extern std::wstring program;

        extern bool suppress;

        enum Level
        {
            INFO = 0,
            FAIL = 1,
            ERROR = 2,
            WARNING = 3,
            DEBUG = 4,
            DIAG = 5,
        };

        void header(Level level);
    }
}

#define INFO_LOG(data) {\
    if(!::Fastcgipp::Logging::suppress)\
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::INFO);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
    }}


#define FAIL_LOG(data) {\
    if(!::Fastcgipp::Logging::suppress)\
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::FAIL);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
        std::exit(EXIT_FAILURE);\
    }}

#if FASTCGIPP_LOG_LEVEL > 0

#define ERROR_LOG(data) \
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::ERROR);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
    }
#else
#define ERROR_LOG(data) {}
#endif

#if FASTCGIPP_LOG_LEVEL > 1

#define WARNING_LOG(data) {\
    if(!::Fastcgipp::Logging::suppress)\
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::WARNING);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
    }}
#else
#define WARNING_LOG(data) {}
#endif

#if FASTCGIPP_LOG_LEVEL > 2
#define DEBUG_LOG(data) {\
    if(!::Fastcgipp::Logging::suppress)\
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::DEBUG);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
    }}
#else
#define DEBUG_LOG(data) {}
#endif

#if FASTCGIPP_LOG_LEVEL > 3
#define DIAG_LOG(data) {\
    if(!::Fastcgipp::Logging::suppress)\
    { \
        std::lock_guard<std::mutex> lock(::Fastcgipp::Logging::mutex);\
        ::Fastcgipp::Logging::header(::Fastcgipp::Logging::DIAG);\
        *::Fastcgipp::Logging::logstream << data << std::endl;\
    }}
#else
#define DIAG_LOG(data) {}
#endif

#endif