Logger::LoggerEvent Class Reference

Implements an event to be logged. More...

#include <Logger.qm.dox.h>

Public Member Methods
	constructor (Logger logger, LoggerLevel level, string message, *list< auto > args, *hash< CallStackInfo > location_info, int thread_id=gettid(), date time_stamp=now_us(), *hash< ExceptionInfo > throwable)
	Instantiates a LoggingEvent from the supplied parameters. More...
	constructor (string fqcn, softstring category, LoggerLevel level, string message, *list< auto > args, *hash< CallStackInfo > location_info, int thread_id=gettid(), date time_stamp=now_us(), *hash< ExceptionInfo > throwable)
	Instantiates a LoggingEvent from the supplied parameters. More...
string	getCategoryName ()
	Returns the category name.
string	getFullQualifiedClassname ()
	Returns the full qualified classname.
LoggerLevel	getLevel ()
	Returns the level of this event.
*hash< CallStackInfo >	getLocationInfo ()
	Returns the location information for this logging event.
*Logger	getLogger ()
	Returns the logger which created the event.
string	getMessage ()
	Returns the string message for the logging event. More...
date	getRelativeTime ()
	Returns a relative timestamp for the event. More...
int	getThreadId ()
	Returns the thread id which is related to event.
*hash< ExceptionInfo >	getThrowableInfo ()
	Returns throwable info, if any.
date	getTimeStamp ()
	Returns the event timestamp as an absolute date/time value.
int	getUniqueId ()
	Generates a globally unique integer identifier and associates it to the event.

Static Public Member Methods
static date	getStartTime ()
	Returns the time when the application/logger started to calculate relative time.
static	setStartTime (date time)
	Sets the starting time for relative time.

Static Private:Internal Member Methods
static Sequence	sequence (1)
	unique id generator

Private:Internal Attributes
string	categoryName
	The category (logger) name.
string	fqcn
	Fully Qualified Class Name of the calling category class.
LoggerLevel	level
	Level of the logging event.
*hash< CallStackInfo >	locationInfo
	location information where the logging was performed.
*Logger	logger
	Logger reference.
*list< auto >	messageArgs
	arguments to be rendered
string	messageFmt
	The application supplied message of logging event (not rendered)
*string	renderedMessage
	The application supplied message rendered through the rendering mechanism.
int	threadId
	related thread id
*hash< ExceptionInfo >	throwableInfo
	internal representation of throwable
date	timeStamp
	event time stamp
int	uniqueId
	unique id

Static Private:Internal Attributes
static date	startTime = now_us()
	origin stamp to calculate relative time

Detailed Description

Implements an event to be logged.

The event data consists of format string and parameters. The output string is rendered at time when logging decision to target is made. Callable parameters are evaluated at this moment as well. It should be considered when callable parameters do not return time persistent value. When callable raises an exception then exception instance is passed for formatting. So it should be considered if format string and use for example "%y" to get readable data.

Member Function Documentation

constructor() [1/2]

Logger::LoggerEvent::constructor	(	Logger	logger,
		LoggerLevel	level,
		string	message,
		*list< auto >	args,
		*hash< CallStackInfo >	location_info,
		int	thread_id = gettid(),
		date	time_stamp = now_us(),
		*hash< ExceptionInfo >	throwable
	)

Instantiates a LoggingEvent from the supplied parameters.

The category becomes logger name and fqcn logger class name

Parameters

logger	Instance of the Logger class
level	The event level
message	The payload as format for sprintf()()
args	The arguments for formatting
location_info	code location related to logging event
thread_id	thread related to the event, Default: gettid()
time_stamp	logging event timestamp. Default value is now_us()
throwable	The throwable ExceptionInfo associated with the logging event

constructor() [2/2]

Logger::LoggerEvent::constructor	(	string	fqcn,
		softstring	category,
		LoggerLevel	level,
		string	message,
		*list< auto >	args,
		*hash< CallStackInfo >	location_info,
		int	thread_id = gettid(),
		date	time_stamp = now_us(),
		*hash< ExceptionInfo >	throwable
	)

Instantiates a LoggingEvent from the supplied parameters.

Parameters

fqcn	name of the caller class.
category	The event category.
level	The event level
message	The payload as format for sprintf()()
args	The arguments for formatting
location_info	code location related to logging event
thread_id	thread related to the event, Default: gettid()
time_stamp	logging event timestamp. Default value is now_us()
throwable	The throwable ExceptionInfo associated with the logging event

getMessage()

string Logger::LoggerEvent::getMessage

(

)

Returns the string message for the logging event.

Potential callable references are evaluated. Next the message is rendered using vsprintf() and the result is cached, so the message is rendered only once.

Returns

the rendered message

getRelativeTime()

date Logger::LoggerEvent::getRelativeTime

(

)

Returns a relative timestamp for the event.

Returns a relative date/time value for the amount of time passed from the beginning of execution to the time when the event was constructed.

See also

getStartTime()