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#pragma once
#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <filesystem>
#include <iostream>
#include <sstream>
#include <string>
namespace crow
{
enum class LogLevel
{
Debug = 0,
Info,
Warning,
Error,
Critical,
};
class logger
{
private:
//
static std::string timestamp()
{
std::string date;
date.resize(32, '\0');
time_t t = time(nullptr);
tm myTm{};
gmtime_r(&t, &myTm);
size_t sz =
strftime(date.data(), date.size(), "%Y-%m-%d %H:%M:%S", &myTm);
date.resize(sz);
return date;
}
public:
logger(const std::string& prefix, const std::string& filename,
const size_t line, LogLevel levelIn) :
level(levelIn)
{
#ifdef BMCWEB_ENABLE_LOGGING
stringstream << "(" << timestamp() << ") [" << prefix << " "
<< std::filesystem::path(filename).filename() << ":"
<< line << "] ";
#endif
}
~logger()
{
if (level >= get_current_log_level())
{
#ifdef BMCWEB_ENABLE_LOGGING
stringstream << std::endl;
std::cerr << stringstream.str();
#endif
}
}
//
template <typename T>
logger& operator<<(T const& value)
{
if (level >= get_current_log_level())
{
#ifdef BMCWEB_ENABLE_LOGGING
stringstream << value;
#endif
}
return *this;
}
//
static void setLogLevel(LogLevel level)
{
getLogLevelRef() = level;
}
static LogLevel get_current_log_level()
{
return getLogLevelRef();
}
private:
//
static LogLevel& getLogLevelRef()
{
static auto currentLevel = static_cast<LogLevel>(1);
return currentLevel;
}
//
std::ostringstream stringstream;
LogLevel level;
};
} // namespace crow
#define BMCWEB_LOG_CRITICAL \
if (crow::logger::get_current_log_level() <= crow::LogLevel::Critical) \
crow::logger("CRITICAL", __FILE__, __LINE__, crow::LogLevel::Critical)
#define BMCWEB_LOG_ERROR \
if (crow::logger::get_current_log_level() <= crow::LogLevel::Error) \
crow::logger("ERROR", __FILE__, __LINE__, crow::LogLevel::Error)
#define BMCWEB_LOG_WARNING \
if (crow::logger::get_current_log_level() <= crow::LogLevel::Warning) \
crow::logger("WARNING", __FILE__, __LINE__, crow::LogLevel::Warning)
#define BMCWEB_LOG_INFO \
if (crow::logger::get_current_log_level() <= crow::LogLevel::Info) \
crow::logger("INFO", __FILE__, __LINE__, crow::LogLevel::Info)
#define BMCWEB_LOG_DEBUG \
if (crow::logger::get_current_log_level() <= crow::LogLevel::Debug) \
crow::logger("DEBUG", __FILE__, __LINE__, crow::LogLevel::Debug)
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