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/** * @file logger.h * @brief Thread-safe logging system for AI Forge Studio * * Provides a centralized logging mechanism with multiple severity levels, * file output, console output, and automatic log rotation. * * Features: * - Thread-safe singleton pattern * - Multiple log levels (DEBUG, INFO, WARNING, ERROR, CRITICAL) * - Timestamped log entries * - Console and file output * - Automatic log file rotation * - Performance monitoring integration */ #ifndef LOGGER_H #define LOGGER_H #include <string> #include <fstream> #include <mutex> #include <memory> #include <chrono> #include <sstream> namespace AIForge { /** * @class Logger * @brief Singleton logger class with thread-safe operations * * Usage: * Logger::getInstance().log(Logger::LogLevel::INFO, "Module", "Message"); */ class Logger { public: enum class LogLevel { DEBUG, INFO, WARNING, ERROR, CRITICAL }; /** * @brief Get singleton instance * @return Reference to the logger instance */ static Logger& getInstance(); // Disable copy and move Logger(const Logger&) = delete; Logger& operator=(const Logger&) = delete; Logger(Logger&&) = delete; Logger& operator=(Logger&&) = delete; /** * @brief Log a message with specified level * @param level Severity level of the message * @param module Name of the module generating the log * @param message The log message */ void log(LogLevel level, const std::string& module, const std::string& message); /** * @brief Set minimum log level to display/record * @param level Minimum level (messages below this are ignored) */ void setMinLogLevel(LogLevel level) { m_minLevel = level; } /** * @brief Enable or disable console output * @param enable true to enable console output, false to disable */ void setConsoleOutput(bool enable) { m_consoleOutput = enable; } /** * @brief Enable or disable file output * @param enable true to enable file output, false to disable */ void setFileOutput(bool enable); /** * @brief Set the log file path * @param filepath Path to the log file */ void setLogFilePath(const std::string& filepath); /** * @brief Flush all pending log entries to file */ void flush(); /** * @brief Get string representation of log level * @param level The log level * @return String representation */ static std::string levelToString(LogLevel level); /** * @brief Get current timestamp as formatted string * @return Timestamp string in format "YYYY-MM-DD HH:MM:SS.mmm" */ static std::string getCurrentTimestamp(); private: Logger(); ~Logger(); std::mutex m_mutex; std::ofstream m_logFile; std::string m_logFilePath; LogLevel m_minLevel; bool m_consoleOutput; bool m_fileOutput; /** * @brief Format a log entry * @param level Log level * @param module Module name * @param message Log message * @return Formatted log string */ std::string formatLogEntry(LogLevel level, const std::string& module, const std::string& message); /** * @brief Write formatted log to outputs * @param formattedLog The formatted log string */ void writeLog(const std::string& formattedLog); }; /** * @brief Helper macro for debug logging */ #define LOG_DEBUG(module, message) \ Logger::getInstance().log(Logger::LogLevel::DEBUG, module, message) #define LOG_INFO(module, message) \ Logger::getInstance().log(Logger::LogLevel::INFO, module, message) #define LOG_WARNING(module, message) \ Logger::getInstance().log(Logger::LogLevel::WARNING, module, message) #define LOG_ERROR(module, message) \ Logger::getInstance().log(Logger::LogLevel::ERROR, module, message) #define LOG_CRITICAL(module, message) \ Logger::getInstance().log(Logger::LogLevel::CRITICAL, module, message) } // namespace AIForge #endif // LOGGER_H