/usr/include/libindi/indilogger.h is in libindi-dev 1.7.1-0ubuntu1.
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Copyright (C) 2012 Evidence Srl - www.evidence.eu.com
Adapted to INDI Library by Jasem Mutlaq & Geehalel.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*******************************************************************************/
#pragma once
#include "indiapi.h"
#include "defaultdevice.h"
#include <stdarg.h>
#include <fstream>
#include <ostream>
#include <string>
#include <sstream>
#include <sys/time.h>
/**
* @brief Macro to configure the logger.
* Example of configuration of the Logger:
* DEBUG_CONF("outputfile", Logger::file_on|Logger::screen_on, DBG_DEBUG, DBG_ERROR);
*/
#define DEBUG_CONF(outputFile, configuration, fileVerbosityLevel, screenVerbosityLevel) \
{ \
Logger::getInstance().configure(outputFile, configuration, fileVerbosityLevel, screenVerbosityLevel); \
}
/**
* @brief Macro to print log messages.
* Example of usage of the Logger:
* DEBUG(DBG_DEBUG, "hello " << "world");
*/
/*
#define DEBUG(priority, msg) { \
std::ostringstream __debug_stream__; \
__debug_stream__ << msg; \
Logger::getInstance().print(priority, __FILE__, __LINE__, \
__debug_stream__.str()); \
}
*/
#define DEBUG(priority, msg) INDI::Logger::getInstance().print(getDeviceName(), priority, __FILE__, __LINE__, msg)
#define DEBUGF(priority, msg, ...) \
INDI::Logger::getInstance().print(getDeviceName(), priority, __FILE__, __LINE__, msg, __VA_ARGS__)
#define DEBUGDEVICE(device, priority, msg) INDI::Logger::getInstance().print(device, priority, __FILE__, __LINE__, msg)
#define DEBUGFDEVICE(device, priority, msg, ...) \
INDI::Logger::getInstance().print(device, priority, __FILE__, __LINE__, msg, __VA_ARGS__)
/**
* @brief Shorter logging macros. In order to use these macros, the function
* (or method) "getDeviceName()" must be defined in the calling scope.
*
* Usage examples:
* LOG_DEBUG("hello " << "world");
* LOGF_WARN("hello %s", "world");
*/
#define LOG_ERROR(txt) DEBUG(INDI::Logger::DBG_ERROR, (txt))
#define LOG_WARN(txt) DEBUG(INDI::Logger::DBG_WARNING, (txt))
#define LOG_INFO(txt) DEBUG(INDI::Logger::DBG_SESSION, (txt))
#define LOG_DEBUG(txt) DEBUG(INDI::Logger::DBG_DEBUG, (txt))
#define LOG_EXTRA1(txt) DEBUG(INDI::Logger::DBG_EXTRA_1, (txt))
#define LOG_EXTRA2(txt) DEBUG(INDI::Logger::DBG_EXTRA_2, (txt))
#define LOG_EXTRA3(txt) DEBUG(INDI::Logger::DBG_EXTRA_3, (txt))
#define LOGF_ERROR(fmt, ...) DEBUGF(INDI::Logger::DBG_ERROR, (fmt), __VA_ARGS__)
#define LOGF_WARN(fmt, ...) DEBUGF(INDI::Logger::DBG_WARNING, (fmt), __VA_ARGS__)
#define LOGF_INFO(fmt, ...) DEBUGF(INDI::Logger::DBG_SESSION, (fmt), __VA_ARGS__)
#define LOGF_DEBUG(fmt, ...) DEBUGF(INDI::Logger::DBG_DEBUG, (fmt), __VA_ARGS__)
#define LOGF_EXTRA1(fmt, ...) DEBUGF(INDI::Logger::DBG_EXTRA_1, (fmt), __VA_ARGS__)
#define LOGF_EXTRA2(fmt, ...) DEBUGF(INDI::Logger::DBG_EXTRA_2, (fmt), __VA_ARGS__)
#define LOGF_EXTRA3(fmt, ...) DEBUGF(INDI::Logger::DBG_EXTRA_3, (fmt), __VA_ARGS__)
namespace INDI
{
/**
* @class INDI::Logger
* @brief The Logger class is a simple logger to log messages to file and INDI clients. This is the implementation of a simple
* logger in C++. It is implemented as a Singleton, so it can be easily called through two DEBUG macros.
* It is Pthread-safe. It allows to log on both file and screen, and to specify a verbosity threshold for both of them.
*
* - By default, the class defines 4 levels of debugging/logging levels:
* -# Errors: Use macro DEBUG(INDI::Logger::DBG_ERROR, "My Error Message)
*
* -# Warnings: Use macro DEBUG(INDI::Logger::DBG_WARNING, "My Warning Message)
*
* -# Session: Use macro DEBUG(INDI::Logger::DBG_SESSION, "My Message) Session messages are the regular status messages from the driver.
*
* -# Driver Debug: Use macro DEBUG(INDI::Logger::DBG_DEBUG, "My Driver Debug Message)
*
* @note Use DEBUGF macro if you have a variable list message. e.g. DEBUGF(INDI::Logger::DBG_SESSION, "Hello %s!", "There")
*
* The default \e active debug levels are Error, Warning, and Session. Driver Debug can be enabled by the client.
*
* To add a new debug level, call addDebugLevel(). You can add an additional 4 custom debug/logging levels.
*
* Check INDI Tutorial two for an example simple implementation.
*/
class Logger
{
/** Type used for the configuration */
enum loggerConf_
{
L_nofile_ = 1 << 0,
L_file_ = 1 << 1,
L_noscreen_ = 1 << 2,
L_screen_ = 1 << 3
};
#ifdef LOGGER_MULTITHREAD
/// Lock for mutual exclusion between different threads
static pthread_mutex_t lock_;
#endif
bool configured_ { false };
/** Pointer to the unique Logger (i.e., Singleton) */
static Logger *m_;
/**
* @brief Initial part of the name of the file used for Logging.
* Date and time are automatically appended.
*/
static std::string logFile_;
/**
* @brief Directory where log file is stored. it is created under ~/.indi/logs/[DATE]/[DRIVER_EXEC]
*/
static std::string logDir_;
/**
* @brief Current configuration of the logger.
* Variable to know if logging on file and on screen are enabled. Note that if the log on
* file is enabled, it means that the logger has been already configured, therefore the
* stream is already open.
*/
static loggerConf_ configuration_;
/// Stream used when logging on a file
std::ofstream out_;
/// Initial time (used to print relative times)
struct timeval initialTime_;
/// Verbosity threshold for files
static unsigned int fileVerbosityLevel_;
/// Verbosity threshold for screen
static unsigned int screenVerbosityLevel_;
static unsigned int rememberscreenlevel_;
/**
* @brief Constructor.
* It is a private constructor, called only by getInstance() and only the
* first time. It is called inside a lock, so lock inside this method
* is not required.
* It only initializes the initial time. All configuration is done inside the
* configure() method.
*/
Logger();
/**
* @brief Destructor.
* It only closes the file, if open, and cleans memory.
*/
~Logger();
/** Method to lock in case of multithreading */
inline static void lock();
/** Method to unlock in case of multithreading */
inline static void unlock();
static INDI::DefaultDevice *parentDevice;
public:
enum VerbosityLevel
{
DBG_ERROR = 0x1,
DBG_WARNING = 0x2,
DBG_SESSION = 0x4,
DBG_DEBUG = 0x8,
DBG_EXTRA_1 = 0x10,
DBG_EXTRA_2 = 0X20,
DBG_EXTRA_3 = 0x40,
DBG_EXTRA_4 = 0x80
};
struct switchinit
{
char name[MAXINDINAME];
char label[MAXINDILABEL];
ISState state;
unsigned int levelmask;
};
static const unsigned int defaultlevel = DBG_ERROR | DBG_WARNING | DBG_SESSION;
static const unsigned int nlevels = 8;
static struct switchinit LoggingLevelSInit[nlevels];
static ISwitch LoggingLevelS[nlevels];
static ISwitchVectorProperty LoggingLevelSP;
static ISwitch ConfigurationS[2];
static ISwitchVectorProperty ConfigurationSP;
typedef loggerConf_ loggerConf;
static const loggerConf file_on = L_nofile_;
static const loggerConf file_off = L_file_;
static const loggerConf screen_on = L_noscreen_;
static const loggerConf screen_off = L_screen_;
static unsigned int customLevel;
static unsigned int nDevices;
static std::string getLogFile() { return logFile_; }
static loggerConf_ getConfiguration() { return configuration_; }
/**
* @brief Method to get a reference to the object (i.e., Singleton)
* It is a static method.
* @return Reference to the object.
*/
static Logger &getInstance();
static bool saveConfigItems(FILE *fp);
/**
* @brief Adds a new debugging level to the driver.
*
* @param debugLevelName The descriptive debug level defined to the client. e.g. Scope Status
* @param LoggingLevelName the short logging level recorded in the logfile. e.g. SCOPE
* @return bitmask of the new debugging level to be used for any subsequent calls to DEBUG and DEBUGF to
* record events to this debug level.
*/
int addDebugLevel(const char *debugLevelName, const char *LoggingLevelName);
void print(const char *devicename, const unsigned int verbosityLevel, const std::string &sourceFile,
const int codeLine,
//const std::string& message,
const char *message, ...);
/**
* @brief Method to configure the logger. Called by the DEBUG_CONF() macro. To make implementation
* easier, the old stream is always closed.
* Then, in case, it is open again in append mode.
* @param outputFile of the file used for logging
* @param configuration (i.e., log on file and on screen on or off)
* @param fileVerbosityLevel threshold for file
* @param screenVerbosityLevel threshold for screen
*/
void configure(const std::string &outputFile, const loggerConf configuration, const int fileVerbosityLevel,
const int screenVerbosityLevel);
static struct switchinit DebugLevelSInit[nlevels];
static ISwitch DebugLevelS[nlevels];
static ISwitchVectorProperty DebugLevelSP;
static bool ISNewSwitch(const char *dev, const char *name, ISState *states, char *names[], int n);
static bool initProperties(INDI::DefaultDevice *device);
static bool updateProperties(bool enable);
static char Tags[nlevels][MAXINDINAME];
/**
* @brief Method used to print message called by the DEBUG() macro.
* @param i which debugging to query its rank. The lower the rank, the more priority it is.
* @return rank of debugging level requested.
*/
static unsigned int rank(unsigned int l);
};
inline Logger::loggerConf operator|(Logger::loggerConf __a, Logger::loggerConf __b)
{
return Logger::loggerConf(static_cast<int>(__a) | static_cast<int>(__b));
}
inline Logger::loggerConf operator&(Logger::loggerConf __a, Logger::loggerConf __b)
{
return Logger::loggerConf(static_cast<int>(__a) & static_cast<int>(__b));
}
}
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