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ost::AppLog(3) Library Functions Manual ost::AppLog(3)

NAME

ost::AppLog -
Application logger is a class that implements a logger that can be used by applications to save log file somewhere on the system.

SYNOPSIS

#include <applog.h>
Inherits streambuf, and ostream.

Classes


class Ident
 
Ident class that represents module name.

Public Member Functions


AppLog (const char *logFileName=NULL, bool logDirectly=false, bool usePipe=false)
 
Constructor for a customized logger. virtual ~AppLog ()
 
Destructor. void subscribe ()
 
Subscribes the current thread to logger, it reserves thread safe buffer for it. void unsubscribe ()
 
Unsubscribes the current thread from logger. void logFileName (const char *FileName, bool logDirectly=false, bool usePipe=false)
 
Allows to set up ost::alog parameters. void close (void)
 
if logDirectly is set it closes the file. void level (Slog::Level enable)
 
Sets the log level. void clogEnable (bool en=true)
 
Enables clog output. void slogEnable (bool en=true)
 
Enables slog output for error level messages. void identLevel (const char *ident, Slog::Level level)
 
Sets the level for that ident. void open (const char *ident)
 
Opens the file if not already and sets ident. virtual int overflow (int c)
 
stream overflow() overload. virtual int sync ()
 
stream sync() overload void emerg (const char *format,...)
 
emerg level printf style method, provided for convenience. void alert (const char *format,...)
 
alert level printf style method, provided for convenience. void critical (const char *format,...)
 
critical level printf style method, provided for convenience. void error (const char *format,...)
 
error level printf style method, provided for convenience. void warn (const char *format,...)
 
warn level printf style method, provided for convenience. void notice (const char *format,...)
 
notice level printf style method, provided for convenience. void info (const char *format,...)
 
info level printf style method, provided for convenience. void debug (const char *format,...)
 
debug level printf style method, provided for convenience. AppLog & operator() (const char *ident, Slog::Level level=Slog::levelError)
 
operator to change ident and log level AppLog & operator() ( Ident &ident)
 
operator to change ident AppLog & operator() (Slog::Level level)
 
operator to change logging level AppLog & operator<< ( AppLog &(*pfManipulator)(AppLog &))
 
manipulator operator, to change print levels. AppLog & operator<< (ostream &(*pfManipulator)(ostream &))
 
manipulator operator, to use ostream manipulators (i.e. AppLog & operator<< (Ident &ident)
 
operator << AppLog & warn (void)
 
warn level AppLog & error (void)
 
error level AppLog & debug (void)
 
debug level AppLog & emerg (void)
 
emerg level AppLog & alert (void)
 
alert level AppLog & critical (void)
 
critical level AppLog & notice (void)
 
notice level AppLog & info (void)
 
info level

Static Public Member Functions


static Slog::Level levelTranslate (string name)
 
Translates level from string to Slog::Level, useful for configuration files for instance.

Protected Member Functions


void writeLog (bool endOfLine=true)
 

Protected Attributes


AppLogPrivate * d
 

Static Protected Attributes


static map< string, Slog::Level > * assoc
 

Friends


ostream & operator<< (ostream &out, AppLog &al)
 

Detailed Description

Application logger is a class that implements a logger that can be used by applications to save log file somewhere on the system.
It uses ost::slog to write to syslog and std::clog to write to standard output.
It provides either a stream oriented logger or a old printf style one.
It can be used to log directly on a file or in a spooler like way. Latter uses a ost::ThreadQueue to implement a thread safe access to logger.
It provides a global stream variable called ost::alog.
It provides an AppLog::Ident class that represents a module name for instance that can be used to tag logs. Logging levels are the same defined into ost::Slog: Slog::levelEmergency Slog::levelAlert Slog::levelCritical Slog::levelError Slog::levelWarning Slog::levelNotice Slog::levelInfo Slog::levelDebugfrom.
Example of usage: alog << mod_name << debug << 'Hello world!' << std::endl;

Constructor & Destructor Documentation

ost::AppLog::AppLog (const char *logFileName = NULL, boollogDirectly = false, boolusePipe = false)

Constructor for a customized logger.
Parameters:
logFileName log file name.
 
logDirectly true to write directly to file, false to use a spooler like logger.
 
usePipe true to use pipe instead of file, false otherwise

virtual ost::AppLog::~AppLog () [virtual]

Destructor.

Member Function Documentation

void ost::AppLog::alert (const char *format, ...)

alert level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::alert (void) [inline]

alert level
Returns:
application logger stream

void ost::AppLog::clogEnable (boolen = true)

Enables clog output.
Parameters:
en true to enable clog output.

void ost::AppLog::close (void)

if logDirectly is set it closes the file.

void ost::AppLog::critical (const char *format, ...)

critical level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::critical (void) [inline]

critical level
Returns:
application logger stream

void ost::AppLog::debug (const char *format, ...)

debug level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::debug (void) [inline]

debug level
Returns:
application logger stream

void ost::AppLog::emerg (const char *format, ...)

emerg level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::emerg (void) [inline]

emerg level
Returns:
application logger stream

void ost::AppLog::error (const char *format, ...)

error level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::error (void) [inline]

error level
Returns:
application logger stream

void ost::AppLog::identLevel (const char *ident, Slog::Levellevel)

Sets the level for that ident.
Parameters:
ident ident (module name for instance).
 
level level

void ost::AppLog::info (const char *format, ...)

info level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::info (void) [inline]

info level
Returns:
application logger stream

void ost::AppLog::level ( Slog::Levelenable)

Sets the log level.
Parameters:
enable log level.

static Slog::Level ost::AppLog::levelTranslate (stringname) [inline], [static]

Translates level from string to Slog::Level, useful for configuration files for instance. Valid level names are: 'emerg' for Slog::levelEmergency 'alert' for Slog::levelAlert 'critical' for Slog::levelCritical 'error' for Slog::levelError 'warn' for Slog::levelWarning 'notice' for Slog::levelNotice 'info' for Slog::levelInfo 'debug' for Slog::levelDebug
Parameters:
name Slog Level name
Returns:
Slog level value

void ost::AppLog::logFileName (const char *FileName, boollogDirectly = false, boolusePipe = false)

Allows to set up ost::alog parameters.
Parameters:
FileName log file name.
 
logDirectly true to write directly to file, false to use a spooler like logger.
 
usePipe true to use pipe instead of file, false otherwise

void ost::AppLog::notice (const char *format, ...)

notice level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::notice (void) [inline]

notice level
Returns:
application logger stream

void ost::AppLog::open (const char *ident)

Opens the file if not already and sets ident.
Parameters:
ident module name for instance.

AppLog& ost::AppLog::operator() (const char *ident, Slog::Levellevel = Slog::levelError )

operator to change ident and log level
Parameters:
ident ident (module name for instance)
 
level new log level
Returns:
application logger stream

AppLog& ost::AppLog::operator() ( Ident &ident) [inline]

operator to change ident
Parameters:
ident ident (module name for instance)
Returns:
application logger stream
References ost::AppLog::Ident::c_str().

AppLog& ost::AppLog::operator() ( Slog::Levellevel)

operator to change logging level
Parameters:
level new log level
Returns:
application logger stream

AppLog& ost::AppLog::operator<< ( AppLog &(*)(AppLog &)pfManipulator)

manipulator operator, to change print levels.
Parameters:
(* pfManipulator)(AppLog &)
Returns:
application logger stream

AppLog& ost::AppLog::operator<< (ostream &(*)(ostream &)pfManipulator)

manipulator operator, to use ostream manipulators (i.e. std::endl,...)
Parameters:
(* pfManipulator)(AppLog &)
Returns:
application logger stream

AppLog& ost::AppLog::operator<< ( Ident &ident) [inline]

operator <<
Parameters:
ident module name for instance.
Returns:
application logger stream
References ost::AppLog::Ident::c_str().

virtual int ost::AppLog::overflow (intc) [virtual]

stream overflow() overload.
Parameters:
c character to be managed
Returns:
c

void ost::AppLog::slogEnable (boolen = true)

Enables slog output for error level messages.
Parameters:
en true to enable slog output.

void ost::AppLog::subscribe ()

Subscribes the current thread to logger, it reserves thread safe buffer for it.

virtual int ost::AppLog::sync () [virtual]

stream sync() overload

void ost::AppLog::unsubscribe ()

Unsubscribes the current thread from logger.

void ost::AppLog::warn (const char *format, ...)

warn level printf style method, provided for convenience.
Parameters:
format printf format

AppLog& ost::AppLog::warn (void) [inline]

warn level
Returns:
application logger stream

void ost::AppLog::writeLog (boolendOfLine = true) [protected]

Friends And Related Function Documentation

ostream& operator<< (ostream &out, AppLog &al) [friend]

Member Data Documentation

map<string, Slog::Level>* ost::AppLog::assoc [static], [protected]

AppLogPrivate* ost::AppLog::d [protected]

Author

Generated automatically by Doxygen for GNU CommonC++ from the source code.
Sun Dec 29 2013 GNU CommonC++