A special version of the RollingFileAppender that acts properly with multiple processes. More...

#include <multiprocessrollingfileappender.h>

Inheritance diagram for log4cxx::rolling::MultiprocessRollingFileAppender:

Public Member Functions
	MultiprocessRollingFileAppender ()

void	activateOptions (helpers::Pool &) override
	Activate the options that were previously set with calls to option setters.

bool	rollover (helpers::Pool &p)
	Implements the usual roll over behaviour.

RollingPolicyPtr	getRollingPolicy () const

TriggeringPolicyPtr	getTriggeringPolicy () const

void	setRollingPolicy (const RollingPolicyPtr &policy)
	Sets the rolling policy.

void	setTriggeringPolicy (const TriggeringPolicyPtr &policy)

void	close () override
	Close appender.

size_t	getFileLength () const
	Get byte length of current active log file.

void	incrementFileLength (size_t increment)
	Increments estimated byte length of current active log file.

Public Member Functions inherited from log4cxx::FileAppender
	FileAppender ()
	The default constructor does not do anything.

	FileAppender (const LayoutPtr &layout, const LogString &filename, bool append, bool bufferedIO, int bufferSize)
	Instantiate a `FileAppender` and open the file designated by `filename`.

	FileAppender (const LayoutPtr &layout, const LogString &filename, bool append)
	Instantiate a FileAppender and open the file designated by `filename`.

	FileAppender (const LayoutPtr &layout, const LogString &filename)
	Instantiate a FileAppender and open the file designated by `filename`.

	~FileAppender ()

virtual void	setFile (const LogString &file)
	The File property takes a string value which should be the name of the file to append to.

bool	getAppend () const
	Returns the value of the Append option.

LogString	getFile () const
	Returns the value of the File option.

void	activateOptions (helpers::Pool &p) override
	Activate the options that were previously set with calls to option setters.

void	setOption (const LogString &option, const LogString &value) override
	Set `option` to `value`.

bool	getBufferedIO () const
	Get the value of the BufferedIO option.

int	getBufferSize () const
	Get the size of the IO buffer.

void	setAppend (bool fileAppend1)
	The Append option takes a boolean value.

void	setBufferedIO (bool bufferedIO)
	The BufferedIO option takes a boolean value.

void	setBufferSize (int bufferSize1)
	Set the size of the IO buffer.

Public Member Functions inherited from log4cxx::WriterAppender
	WriterAppender ()
	This default constructor does nothing.

	~WriterAppender ()

void	activateOptions (helpers::Pool &pool) override
	Derived appenders should override this method if option structure requires it.

void	setImmediateFlush (bool value)
	If the ImmediateFlush option is set to `true`, the appender will flush at the end of each write.

bool	getImmediateFlush () const
	Returns value of the ImmediateFlush option.

void	append (const spi::LoggingEventPtr &event, helpers::Pool &p) override
	This method is called by the AppenderSkeleton::doAppend method.

void	close () override
	Close this appender instance.

LogString	getEncoding () const
	The current encoding value.

void	setEncoding (const LogString &value)
	Set the encoding to `value`.

void	setOption (const LogString &option, const LogString &value) override
	Set `option` to `value`.

void	setWriter (const log4cxx::helpers::WriterPtr &writer)

const log4cxx::helpers::WriterPtr	getWriter () const

bool	requiresLayout () const override
	Configurators call this method to determine if the appender requires a layout.

Public Member Functions inherited from log4cxx::AppenderSkeleton
	AppenderSkeleton ()

	AppenderSkeleton (const LayoutPtr &layout)

virtual	~AppenderSkeleton ()

void	finalize ()
	Finalize this appender by calling the derived class' `close` method.

void	activateOptions (helpers::Pool &) override
	Activate the options that were previously set with calls to option setters.

void	setOption (const LogString &option, const LogString &value) override
	Set `option` to `value`.

void	addFilter (const spi::FilterPtr newFilter) override
	Add a filter to end of the filter list.

void	clearFilters () override
	Clear the filters chain.

const spi::ErrorHandlerPtr	getErrorHandler () const
	Return the currently set spi::ErrorHandler for this Appender.

spi::FilterPtr	getFilter () const override
	Returns the head Filter.

const spi::FilterPtr	getFirstFilter () const
	Return the first filter in the filter chain for this Appender.

LayoutPtr	getLayout () const override
	Returns the layout of this appender.

LogString	getName () const override
	Returns the name of this Appender.

const LevelPtr	getThreshold () const
	Returns this appenders threshold level.

bool	isAsSevereAsThreshold (const LevelPtr &level) const
	Check whether the message level is below the appender's threshold.

void	doAppend (const spi::LoggingEventPtr &event, helpers::Pool &pool) override
	This method performs threshold checks and invokes filters before delegating actual logging to the subclasses specific AppenderSkeleton::append method.

void	setErrorHandler (const spi::ErrorHandlerPtr eh)
	Set the `ErrorHandler` for this Appender.

void	setLayout (const LayoutPtr layout1) override
	Set the layout for this appender.

void	setName (const LogString &name1) override
	Set the name of this Appender.

void	setThreshold (const LevelPtr &threshold)
	Set the threshold level.

Public Member Functions inherited from log4cxx::Appender
virtual	~Appender ()

virtual void	addFilter (const spi::FilterPtr newFilter)=0
	Add a filter to the end of the filter list.

virtual spi::FilterPtr	getFilter () const =0
	Returns the head Filter.

virtual void	clearFilters ()=0
	Clear the list of filters by removing all the filters in it.

virtual void	close ()=0
	Release any resources allocated within the appender such as file handles, network connections, etc.

virtual void	doAppend (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &pool)=0
	Log in `Appender` specific way.

virtual LogString	getName () const =0
	Get the name of this appender.

virtual void	setLayout (const LayoutPtr layout)=0
	Set the Layout for this appender.

virtual LayoutPtr	getLayout () const =0
	Returns this appenders layout.

virtual void	setName (const LogString &name)=0
	Set the name of this appender.

virtual bool	requiresLayout () const =0
	Configurators call this method to determine if the appender requires a layout.

Public Member Functions inherited from log4cxx::spi::OptionHandler
virtual	~OptionHandler ()

virtual void	activateOptions (helpers::Pool &p)=0
	Activate the options that were previously set with calls to option setters.

virtual void	setOption (const LogString &option, const LogString &value)=0
	Set `option` to `value`.

Public Member Functions inherited from log4cxx::helpers::Object
virtual	~Object ()

virtual const helpers::Class &	getClass () const =0

virtual bool	instanceof (const Class &clazz) const =0

virtual const void *	cast (const Class &clazz) const =0

Protected Member Functions
void	subAppend (const spi::LoggingEventPtr &event, helpers::Pool &p) override
	Actual writing occurs here.

bool	rolloverInternal (log4cxx::helpers::Pool &p)

helpers::WriterPtr	createWriter (helpers::OutputStreamPtr &os) override
	Returns an OutputStreamWriter when passed an OutputStream.

Protected Member Functions inherited from log4cxx::FileAppender
void	activateOptionsInternal (log4cxx::helpers::Pool &p)

void	setFileInternal (const LogString &file, bool append, bool bufferedIO, size_t bufferSize, log4cxx::helpers::Pool &p)
	Sets and opens the file where the log output will go.

void	setFileInternal (const LogString &file)

	FileAppender (std::unique_ptr< FileAppenderPriv > priv)

Protected Member Functions inherited from log4cxx::WriterAppender
	WriterAppender (const LayoutPtr &layout, log4cxx::helpers::WriterPtr &writer)

	WriterAppender (const LayoutPtr &layout)

	WriterAppender (std::unique_ptr< WriterAppenderPriv > priv)

virtual bool	checkEntryConditions () const
	This method determines if there is a sense in attempting to append.

void	closeWriter ()
	Close the underlying `log4cxx::helpers::Writer`.

virtual helpers::WriterPtr	createWriter (helpers::OutputStreamPtr &os)
	Returns an OutputStreamWriter when passed an OutputStream.

virtual void	subAppend (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &p)
	Actual writing occurs here.

virtual void	writeFooter (log4cxx::helpers::Pool &p)
	Write a footer as produced by the embedded layout's Layout::appendFooter method.

virtual void	writeHeader (log4cxx::helpers::Pool &p)
	Write a header as produced by the embedded layout's Layout::appendHeader method.

void	setWriterInternal (const log4cxx::helpers::WriterPtr &writer)
	Set the writer.

Protected Member Functions inherited from log4cxx::AppenderSkeleton
	AppenderSkeleton (LOG4CXX_PRIVATE_PTR(AppenderSkeletonPrivate) priv)

virtual void	append (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &p)=0
	Subclasses of `AppenderSkeleton` should implement this method to perform actual logging.

void	doAppendImpl (const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &pool)

Friends
class	CountingOutputStream

Additional Inherited Members
Static Public Member Functions inherited from log4cxx::FileAppender
static LogString	stripDuplicateBackslashes (const LogString &name)
	Replaces double backslashes with single backslashes for compatibility with paths from earlier XML configurations files.

Detailed Description

A special version of the RollingFileAppender that acts properly with multiple processes.

Constructor & Destructor Documentation

◆ MultiprocessRollingFileAppender()

log4cxx::rolling::MultiprocessRollingFileAppender::MultiprocessRollingFileAppender ( )

Member Function Documentation

◆ activateOptions()

void log4cxx::rolling::MultiprocessRollingFileAppender::activateOptions ( helpers::Pool & )

overridevirtual

Activate the options that were previously set with calls to option setters.

Activate the attached TriggeringPolicy and RollingPolicy.

See also: FileAppender::activateOptions()

Reimplemented from log4cxx::FileAppender.

◆ close()

void log4cxx::rolling::MultiprocessRollingFileAppender::close ( )

overridevirtual

Close appender.

Waits for any asynchronous file compression actions to be completed.

Implements log4cxx::Appender.

◆ createWriter()

helpers::WriterPtr log4cxx::rolling::MultiprocessRollingFileAppender::createWriter ( helpers::OutputStreamPtr & os )

overrideprotectedvirtual

Returns an OutputStreamWriter when passed an OutputStream.

The encoding used will depend on the value of the encoding property. If the encoding value is specified incorrectly the writer will be opened using the default system encoding (an error message will be printed to the loglog.

Parameters

os	output stream, may not be null.

Returns: new writer.

Reimplemented from log4cxx::WriterAppender.

◆ getFileLength()

size_t log4cxx::rolling::MultiprocessRollingFileAppender::getFileLength ( ) const

Get byte length of current active log file.

Returns: byte length of current active log file.

◆ getRollingPolicy()

RollingPolicyPtr log4cxx::rolling::MultiprocessRollingFileAppender::getRollingPolicy ( ) const

◆ getTriggeringPolicy()

TriggeringPolicyPtr log4cxx::rolling::MultiprocessRollingFileAppender::getTriggeringPolicy ( ) const

◆ incrementFileLength()

void log4cxx::rolling::MultiprocessRollingFileAppender::incrementFileLength ( size_t increment )

Increments estimated byte length of current active log file.

Parameters

increment additional bytes written to log file.

◆ rollover()

bool log4cxx::rolling::MultiprocessRollingFileAppender::rollover ( helpers::Pool & p )

Implements the usual roll over behaviour.

If MaxBackupIndex is positive, then files {File.1, ..., File.MaxBackupIndex -1} are renamed to {File.2, ..., File.MaxBackupIndex}. Moreover, File is renamed File.1 and closed. A new File is created to receive further log output.

If MaxBackupIndex is equal to zero, then the File is truncated with no backup files created.

◆ rolloverInternal()

bool log4cxx::rolling::MultiprocessRollingFileAppender::rolloverInternal ( log4cxx::helpers::Pool & p )

protected

◆ setRollingPolicy()

void log4cxx::rolling::MultiprocessRollingFileAppender::setRollingPolicy ( const RollingPolicyPtr & policy )

Sets the rolling policy.

In case the 'policy' argument also implements TriggeringPolicy, then the triggering policy for this appender is automatically set to be the policy argument.

Parameters

policy

◆ setTriggeringPolicy()

void log4cxx::rolling::MultiprocessRollingFileAppender::setTriggeringPolicy ( const TriggeringPolicyPtr & policy )

◆ subAppend()

void log4cxx::rolling::MultiprocessRollingFileAppender::subAppend	(	const spi::LoggingEventPtr &	event,
		helpers::Pool &	p
	)

overrideprotectedvirtual

Actual writing occurs here.

Reimplemented from log4cxx::WriterAppender.

Friends And Related Function Documentation

◆ CountingOutputStream

friend class CountingOutputStream

friend

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

multiprocessrollingfileappender.h

Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MultiprocessRollingFileAppender()

Member Function Documentation

◆ activateOptions()

◆ close()

◆ createWriter()

◆ getFileLength()

◆ getRollingPolicy()

◆ getTriggeringPolicy()

◆ incrementFileLength()

◆ rollover()

◆ rolloverInternal()

◆ setRollingPolicy()

◆ setTriggeringPolicy()

◆ subAppend()

Friends And Related Function Documentation

◆ CountingOutputStream