Logger::Logger Class Reference

Implements main logger class whose instance will be used by user code when logging. More...

Inheritance diagram for Logger::Logger:

Public Member Methods
	addAppender (LoggerAppender appender)
	Adds an appender to the appender list. More...
	assertLog (bool assertion, string message)
	Performs logging of assertions. More...
	constructor (*string n_name)
	Creates the object. More...
	debug (string message)
	Logs a message object with the DEBUG level. More...
	debugVar (string var_name, auto value)
	Logs the variable name and value using DEBUG level. More...
*LoggerLevel	decLevel ()
	Decrement logger level. More...
	error (string message)
	Logs a message object with the ERROR level. More...
	fatal (string message)
	Logs a message object with the FATAL level. More...
bool	getAdditivity ()
	Returns the additivity flag.
list< LoggerAppender >	getAppenders ()
	Returns the appender list. More...
*LoggerLevel	getLevel (bool effective=True)
	Returns the logging level. More...
string	getName ()
	Returns the logger name.
*Logger	getParent ()
	Returns the parent logger, if any.
*LoggerLevel	incLevel ()
	Increment logger level. More...
	info (string message)
	Logs a message object with the INFO level. More...
bool	isDebugEnabled ()
	Checks whether this Logger is enabled for the DEBUG Level.
bool	isEnabledFor (LoggerLevel level)
	Checks whether this Logger is enabled for a given Level passed as parameter. More...
bool	isEnabledFor (int level)
	Checks whether this Logger is enabled for a given Level passed as parameter. More...
bool	isEnabledFor (string level)
	Checks whether this Logger is enabled for a given Level passed as parameter. More...
bool	isErrorEnabled ()
	Checks whether this Logger is enabled for the ERROR Level.
bool	isFatalEnabled ()
	Checks whether this Logger is enabled for the FATAL Level.
bool	isInfoEnabled ()
	Checks whether this Logger is enabled for the INFO Level.
bool	isTraceEnabled ()
	Checks whether this Logger is enabled for the TRACE Level.
bool	isWarnEnabled ()
	Checks whether this Logger is enabled for the WARN Level.
	log (LoggerLevel level, string message)
	Logs a message using the provided logging level. More...
	log (int level, string message)
	Logs a message using the provided logging level. More...
	log (string level, string message)
	Logs a message using the provided logging level. More...
	logEvent (LoggerEvent event)
	Logs an already prepared logging event object. More...
	removeAllAppenders ()
	Clears the appender list by removing all appenders.
	removeAppender (LoggerAppender appender)
	Removes the appender from the list. More...
	setAdditivity (bool enable)
	Sets the additivity flag; when additivity is active, events are passed to parent loggers. More...
	setLevel (*LoggerLevel level)
	Sets the logging level. More...
	setLevel (string level)
	Sets the logging level. More...
	setLevel (int level)
	Sets the logging level. More...
	setParent (*Logger value)
	Sets the parent logger. More...
	trace (string message)
	Logs a message object with the TRACE level. More...
	traceVar (string var_name, auto value)
	Logs the variable name and value using TRACE level. More...
	warn (string message)
	Logs a message object with the WARN level. More...

Private Member Methods
	callAppenders (LoggerEvent event)
	Forwards the given logging event to all linked appenders. More...
hash< CallStackInfo >	getLocation ()
	Returns the call location where the log function was called from.

Private:Internal Member Methods
RWLock	lock ()
	The lock to protect object manipulation.

Static Private:Internal Member Methods
static RWLock	hierarchyLock ()
	The lock to protect access to parent/child hierarchy.

Private:Internal Attributes
bool	additivity = True
	Logger additivity. If set to true then child loggers will inherit the appenders of their ancestors by default.
list< LoggerAppender >	appenders
	A collection of appenders linked to this logger.
*LoggerLevel	currentLevel
	The assigned Logger level. If NOTHING, the parent level is used.
string	name
	The name of this Logger instance.
*Logger	parent
	The parent logger. Unassigned if this is the root logger.

Detailed Description

Implements main logger class whose instance will be used by user code when logging.

The Logger object is provided to user code. When a log is triggered then message, arguments, current code position, time are appended into LoggerEvent event instance when the logging level is enabled. The event is passed to all registered appenders in the given Logger as well as in parents in the hierarchy when additivity is enabled.

Member Function Documentation

addAppender()

Logger::Logger::addAppender

(

LoggerAppender

appender

)

Adds an appender to the appender list.

Parameters

appender

add a new LoggerAppender

Exceptions

LOGGER-ERROR

exception if appender is already in list

assertLog()

Logger::Logger::assertLog	(	bool	assertion,
		string	message
	)

Performs logging of assertions.

If the assertion parameter is False, then the message is logged using the ERROR level.

See also

log()

Parameters

assertion	the boolean assertion value
message	a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

callAppenders()

Logger::Logger::callAppenders ( LoggerEvent  event )

private

Forwards the given logging event to all linked appenders.

Parameters

event

the event to forward

constructor()

Logger::Logger::constructor

(

*string

n_name

)

Creates the object.

Parameters

n_name

the name of the object

debug()

Logger::Logger::debug

(

string

message

)

Logs a message object with the DEBUG level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

debugVar()

Logger::Logger::debugVar	(	string	var_name,
		auto	value
	)

Logs the variable name and value using DEBUG level.

See also

log()

Parameters

var_name	the variable name
value	the value of the variable

decLevel()

*LoggerLevel Logger::Logger::decLevel

(

)

Decrement logger level.

Returns

current LoggerLevel

error()

Logger::Logger::error

(

string

message

)

Logs a message object with the ERROR level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

fatal()

Logger::Logger::fatal

(

string

message

)

Logs a message object with the FATAL level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

getAppenders()

list<LoggerAppender> Logger::Logger::getAppenders

(

)

Returns the appender list.

Note that the appender list may be manipulated in another thread as internal lock is released when list is returned

getLevel()

*LoggerLevel Logger::Logger::getLevel

(

bool

effective = True

)

Returns the logging level.

Parameters

effective

if False then get current level which can be NOTHING, if True then get level which might be inherited from parent, Default: True

Exceptions

LOGGER-ERROR

if cannot get effective level from hierarchy

incLevel()

*LoggerLevel Logger::Logger::incLevel

(

)

Increment logger level.

Returns

current LoggerLevel

info()

Logger::Logger::info

(

string

message

)

Logs a message object with the INFO level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

isEnabledFor() [1/3]

bool Logger::Logger::isEnabledFor

(

LoggerLevel

level

)

Checks whether this Logger is enabled for a given Level passed as parameter.

Parameters

level

the log level to check

isEnabledFor() [2/3]

bool Logger::Logger::isEnabledFor

(

int

level

)

Checks whether this Logger is enabled for a given Level passed as parameter.

Parameters

level

the log level to check

isEnabledFor() [3/3]

bool Logger::Logger::isEnabledFor

(

string

level

)

Checks whether this Logger is enabled for a given Level passed as parameter.

Parameters

level

the log level to check

log() [1/3]

Logger::Logger::log	(	LoggerLevel	level,
		string	message
	)

Logs a message using the provided logging level.

Parameters

level	The logging level.
message	a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

log() [2/3]

Logger::Logger::log	(	int	level,
		string	message
	)

Logs a message using the provided logging level.

Parameters

level	the logging level.
message	a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

log() [3/3]

Logger::Logger::log	(	string	level,
		string	message
	)

Logs a message using the provided logging level.

Parameters

level	The logging level.
message	a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

logEvent()

Logger::Logger::logEvent

(

LoggerEvent

event

)

Logs an already prepared logging event object.

Parameters

event

the event to log

removeAppender()

Logger::Logger::removeAppender

(

LoggerAppender

appender

)

Removes the appender from the list.

Parameters

appender

the appender to remove

setAdditivity()

Logger::Logger::setAdditivity

(

bool

enable

)

Sets the additivity flag; when additivity is active, events are passed to parent loggers.

Parameters

enable

the additivity flag; when additivity is active, events are passed to parent loggers

setLevel() [1/3]

Logger::Logger::setLevel

(

*LoggerLevel

level

)

Sets the logging level.

Parameters

level

if nothing then inherits level from parent

setLevel() [2/3]

Logger::Logger::setLevel

(

string

level

)

Sets the logging level.

Parameters

level

the logging level as a string

setLevel() [3/3]

Logger::Logger::setLevel

(

int

level

)

Sets the logging level.

Parameters

level

the logging level to set

setParent()

Logger::Logger::setParent

(

*Logger

value

)

Sets the parent logger.

Parameters

value

the parent logger

Exceptions

LOGGER-ERROR

in case of circular reference

trace()

Logger::Logger::trace

(

string

message

)

Logs a message object with the TRACE level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.

traceVar()

Logger::Logger::traceVar	(	string	var_name,
		auto	value
	)

Logs the variable name and value using TRACE level.

See also

log()

Parameters

var_name	the variable name
value	the value of the variable

warn()

Logger::Logger::warn

(

string

message

)

Logs a message object with the WARN level.

See also

log()

Parameters

message

a string to log used as a format string for vsprintf(). Optional arguments are passed to the LoggerEvent object. If the last parameter is an ExceptionInfo typed hash, then it is considered "throwable" information.