pcpp::Logger Class Reference

#include <Logger.h>

Public Types
enum	LogLevel { Error, Info, Debug }
typedef void(*	LogPrinter) (LogLevel logLevel, const std::string &logMessage, const std::string &file, const std::string &method, const int line)

Public Member Functions
LogLevel	getLogLevel (LogModule module)
void	setLogLevel (LogModule module, LogLevel level)
bool	isDebugEnabled (LogModule module) const
void	setAllModulesToLogLevel (LogLevel level)
void	setLogPrinter (LogPrinter printer)
void	resetLogPrinter ()
std::string	getLastError ()
void	suppressLogs ()
void	enableLogs ()
bool	logsEnabled () const
void	internalPrintLogMessage (std::ostringstream *logStream, Logger::LogLevel logLevel, const char *file, const char *method, int line)

Static Public Member Functions
static std::string	logLevelAsString (LogLevel logLevel)
static Logger &	getInstance ()

Detailed Description

PcapPlusPlus logger manager. PcapPlusPlus uses this logger to output both error and debug logs. There are currently 3 log levels: Logger::Error, Logger::Info and Logger::Debug.

PcapPlusPlus is divided into modules (described in LogModule enum). The user can set the log level got each module or to all modules at once. The default is Logger::Info which outputs only error messages. Changing log level for modules can be done dynamically while the application is running.

The logger also exposes a method to retrieve the last error log message.

Logs are printed to console by default in a certain format. The user can set a different print function to change the format or to print to other media (such as files, etc.).

PcapPlusPlus logger is a singleton which can be reached from anywhere in the code.

Note: Logger::Info level logs are currently only used in DPDK devices to set DPDK log level to RTE_LOG_NOTICE.

Member Typedef Documentation

LogPrinter

pcpp::Logger::LogPrinter

Log printer callback. Used for printing the logs in a custom way.

Parameters

[in]	logLevel	The log level for this log message
[in]	logMessage	The log message
[in]	file	The source file in PcapPlusPlus code the log message is coming from
[in]	method	The method in PcapPlusPlus code the log message is coming from
[in]	line	The line in PcapPlusPlus code the log message is coming from

Member Enumeration Documentation

LogLevel

enum pcpp::Logger::LogLevel

An enum representing the log level. Currently 3 log levels are supported: Error, Info and Debug. Info is the default log level

Enumerator
Error	Error log level.
Info	Info log level.
Debug	Debug log level.

Member Function Documentation

enableLogs()

void pcpp::Logger::enableLogs ( )

inline

Enable logs in all PcapPlusPlus modules

getInstance()

static Logger& pcpp::Logger::getInstance ( )

inlinestatic

Get access to Logger singleton

Returns

a pointer to the Logger singleton

getLastError()

std::string pcpp::Logger::getLastError ( )

inline

Returns

Get the last error message

getLogLevel()

LogLevel pcpp::Logger::getLogLevel ( LogModule  module )

inline

Get the log level for a certain module

Parameters

[in]

module

PcapPlusPlus module

Returns

The log level set for this module

internalPrintLogMessage()

void pcpp::Logger::internalPrintLogMessage	(	std::ostringstream *	logStream,
		Logger::LogLevel	logLevel,
		const char *	file,
		const char *	method,
		int	line
	)

An internal method to print log messages. Shouldn't be used externally.

isDebugEnabled()

bool pcpp::Logger::isDebugEnabled ( LogModule  module ) const

inline

Check whether a certain module is set to debug log level

Parameters

[in]

module

PcapPlusPlus module

Returns

True if this module log level is "debug". False otherwise

logLevelAsString()

static std::string pcpp::Logger::logLevelAsString ( LogLevel  logLevel )

static

A static method for converting the log level enum to a string.

Parameters

[in]

logLevel

A log level enum

Returns

The log level as a string

logsEnabled()

bool pcpp::Logger::logsEnabled ( ) const

inline

Get an indication if logs are currently enabled.

Returns

True if logs are currently enabled, false otherwise

resetLogPrinter()

void pcpp::Logger::resetLogPrinter ( )

inline

Set the log printer back to the default printer

setAllModulesToLogLevel()

void pcpp::Logger::setAllModulesToLogLevel ( LogLevel  level )

inline

Set all PcapPlusPlus modules to a certain log level

Parameters

[in]

level

The log level to set all modules to

setLogLevel()

void pcpp::Logger::setLogLevel ( LogModule  module, LogLevel  level  )

inline

Set the log level for a certain PcapPlusPlus module

Parameters

[in]	module	PcapPlusPlus module
[in]	level	The log level to set the module to

setLogPrinter()

void pcpp::Logger::setLogPrinter ( LogPrinter  printer )

inline

Set a custom log printer.

Parameters

[in]

printer

A log printer function that will be called for every log message

suppressLogs()

void pcpp::Logger::suppressLogs ( )

inline

Suppress logs in all PcapPlusPlus modules