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SyslogAppender Class Reference

Use SyslogAppender to send log messages to a remote syslog daemon. More...

Inherits AppenderSkeleton.

## Public Member Functions
| SyslogAppender ()
| SyslogAppender (const LayoutPtr &layout, int syslogFacility)
| SyslogAppender (const LayoutPtr &layout, const LogString &syslogHost, int syslogFacility)
| ~SyslogAppender ()
void | close ()
| Release any resources held by this SyslogAppender. More...
void | append (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &p)
| Subclasses of `AppenderSkeleton` should implement this method to perform actual logging. More...
void | activateOptions (log4cxx::helpers::Pool &p)
| This method returns immediately as options are activated when they are set. More...
void | setOption (const LogString &option, const LogString &value)
| Set `option` to `value`. More...
virtual bool | requiresLayout () const
| The SyslogAppender requires a layout. More...
void | setSyslogHost (const LogString &syslogHost)
| The SyslogHost option is the name of the the syslog host where log output should go. More...
const LogString & | getSyslogHost () const
| Returns the value of the SyslogHost option. More...
void | setFacility (const LogString &facilityName)
| Set the syslog facility. More...
LogString | getFacility () const
| Returns the value of the Facility option. More...
void | setFacilityPrinting (bool facilityPrinting1)
| If the FacilityPrinting option is set to true, the printed message will include the facility name of the application. More...
bool | getFacilityPrinting () const
| Returns the value of the FacilityPrinting option. More...
Public Member Functions inherited from AppenderSkeleton
| AppenderSkeleton ()
| AppenderSkeleton (const LayoutPtr &layout)
void | addRef () const
void | releaseRef () const
void | finalize ()
| Finalize this appender by calling the derived class' `close` method. More...
void | addFilter (const spi::FilterPtr &newFilter)
| Add a filter to end of the filter list. More...
void | clearFilters ()
| Clear the filters chain. More...
const spi::ErrorHandlerPtr & | getErrorHandler () const
| Return the currently set spi::ErrorHandler for this Appender. More...
spi::FilterPtr | getFilter () const
| Returns the head Filter. More...
const spi::FilterPtr & | getFirstFilter () const
| Return the first filter in the filter chain for this Appender. More...
LayoutPtr | getLayout () const
| Returns the layout of this appender. More...
LogString | getName () const
| Returns the name of this Appender. More...
const LevelPtr & | getThreshold ()
| Returns this appenders threshold level. More...
bool | isAsSevereAsThreshold (const LevelPtr &level) const
| Check whether the message level is below the appender's threshold. More...
void | doAppend (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &pool)
| This method performs threshold checks and invokes filters before delegating actual logging to the subclasses specific AppenderSkeleton::append method. More...
void | setErrorHandler (const spi::ErrorHandlerPtr &eh)
| Set the ErrorHandler for this Appender. More...
void | setLayout (const LayoutPtr &layout1)
| Set the layout for this appender. More...
void | setName (const LogString &name1)
| Set the name of this Appender. More...
void | setThreshold (const LevelPtr &threshold)
| Set the threshold level. More...
Public Member Functions inherited from Appender
virtual | ~Appender ()
Public Member Functions inherited from OptionHandler
virtual | ~OptionHandler ()
Public Member Functions inherited from Object
virtual const helpers::Class & | getClass () const
virtual | ~Object ()
virtual bool | instanceof (const Class &clazz) const =0
virtual const void * | cast (const Class &clazz) const =0
Public Member Functions inherited from ObjectImpl
| ObjectImpl ()
virtual | ~ObjectImpl ()
void | addRef () const
void | releaseRef () const

## Static Public Member Functions
static LogString | getFacilityString (int syslogFacility)
| Returns the specified syslog facility as a lower-case String, e.g. More...
static int | getFacility (const LogString &facilityName)
| Returns the integer value corresponding to the named syslog facility, or -1 if it couldn't be recognized. More...
Static Public Member Functions inherited from Object
static const helpers::Class & | getStaticClass ()
static const log4cxx::helpers::ClassRegistration & | registerClass ()

## Protected Member Functions
void | initSyslogFacilityStr ()

## Protected Attributes
int | syslogFacility
LogString | facilityStr
bool | facilityPrinting
helpers::SyslogWriter * | sw
LogString | syslogHost
Protected Attributes inherited from AppenderSkeleton
LayoutPtr | layout
| The layout variable does not need to be set if the appender implementation has its own layout. More...
LogString | name
| Appenders are named. More...
LevelPtr | threshold
| There is no level threshold filtering by default. More...
spi::ErrorHandlerPtr | errorHandler
| It is assumed and enforced that errorHandler is never null. More...
spi::FilterPtr | headFilter
| The first filter in the filter chain. More...
spi::FilterPtr | tailFilter
| The last filter in the filter chain. More...
bool | closed
| Is this appender closed? More...
log4cxx::helpers::Pool | pool
log4cxx::helpers::Mutex | mutex
Protected Attributes inherited from ObjectImpl
unsigned int volatile | ref

## Detailed Description

Use SyslogAppender to send log messages to a remote syslog daemon.

## Constructor & Destructor Documentation

SyslogAppender | ( |  | ) |

SyslogAppender | ( | const LayoutPtr & | layout,
|  | int | syslogFacility
| ) |  |

SyslogAppender | ( | const LayoutPtr & | layout,
|  | const LogString & | syslogHost,
|  | int | syslogFacility
| ) |  |

~SyslogAppender | ( |  | ) |

## Member Function Documentation

void activateOptions | ( | log4cxx::helpers::Pool & | p | ) |
| virtual

This method returns immediately as options are activated when they are set.

Reimplemented from AppenderSkeleton.

void append | ( | const spi::LoggingEventPtr & | event,
|  | log4cxx::helpers::Pool & | p
| ) |  |
| virtual

Subclasses of `AppenderSkeleton` should implement this method to perform actual logging.

See also AppenderSkeleton::doAppend method.

Implements AppenderSkeleton.

void close | ( |  | ) |
| virtual

Release any resources held by this SyslogAppender.

Implements Appender.

static int getFacility | ( | const LogString & | facilityName | ) |
| static

Returns the integer value corresponding to the named syslog facility, or -1 if it couldn't be recognized.

Parameters

  facilityName | one of the strings KERN, USER, MAIL, DAEMON, AUTH, SYSLOG, LPR, NEWS, UUCP, CRON, AUTHPRIV, FTP, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The matching is case-insensitive.

LogString getFacility | ( |  | ) | const
| inline

Returns the value of the Facility option.

bool getFacilityPrinting | ( |  | ) | const
| inline

Returns the value of the FacilityPrinting option.

static LogString getFacilityString | ( | int | syslogFacility | ) |
| static

Returns the specified syslog facility as a lower-case String, e.g.

"kern", "user", etc.

const LogString& getSyslogHost | ( |  | ) | const
| inline

Returns the value of the SyslogHost option.

void initSyslogFacilityStr | ( |  | ) |
| protected

virtual bool requiresLayout | ( |  | ) | const
| inline virtual

The SyslogAppender requires a layout.

Hence, this method returns `true`.

Implements Appender.

void setFacility | ( | const LogString & | facilityName | ) |

Set the syslog facility.

This is the Facility option.

The `facilityName` parameter must be one of the strings KERN, USER, MAIL, DAEMON, AUTH, SYSLOG, LPR, NEWS, UUCP, CRON, AUTHPRIV, FTP, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. Case is unimportant.

void setFacilityPrinting | ( | bool | facilityPrinting1 | ) |
| inline

If the FacilityPrinting option is set to true, the printed message will include the facility name of the application.

It is false by default.

void setOption | ( | const LogString & | option,
|  | const LogString & | value
| ) |  |
| virtual

Set `option` to `value`.

The handling of each option depends on the OptionHandler instance. Some options may become active immediately whereas other may be activated only when activateOptions is called.

Reimplemented from AppenderSkeleton.

void setSyslogHost | ( | const LogString & | syslogHost | ) |

The SyslogHost option is the name of the the syslog host where log output should go.

WARNING If the SyslogHost is not set, then this appender will fail.

## Member Data Documentation

bool facilityPrinting
| protected

LogString facilityStr
| protected

helpers::SyslogWriter* sw
| protected

int syslogFacility
| protected

LogString syslogHost
| protected

The documentation for this class was generated from the following file:

- syslogappender.h