org.apache.logging.log4j.core.appender

Class AbstractOutputStreamAppender

java.lang.Object

org.apache.logging.log4j.core.filter.AbstractFilterable

org.apache.logging.log4j.core.appender.AbstractAppender

org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender

All Implemented Interfaces:

Appender, Filterable, LifeCycle

Direct Known Subclasses:

ConsoleAppender, FileAppender, RandomAccessFileAppender, RollingFileAppender, RollingRandomAccessFileAppender, SocketAppender

public abstract class AbstractOutputStreamAppender
extends AbstractAppender

Appends log events as bytes to a byte output stream. The stream encoding is defined in the layout.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	immediateFlush Immediate flush means that the underlying writer or output stream will be flushed at the end of each append operation.

Fields inherited from class org.apache.logging.log4j.core.filter.AbstractFilterable

LOGGER

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractOutputStreamAppender(String name, Layout<? extends Serializable> layout, Filter filter, boolean ignoreExceptions, boolean immediateFlush, OutputStreamManager manager) Instantiate a WriterAppender and set the output destination to a new OutputStreamWriter initialized with os as its OutputStream.

Method Summary

Methods

Modifier and Type	Method and Description
void	append(LogEvent event) Actual writing occurs here.
protected OutputStreamManager	getManager()
protected void	replaceManager(OutputStreamManager newManager)
void	start() Start the Appender.
void	stop() Stop the Appender.

Methods inherited from class org.apache.logging.log4j.core.appender.AbstractAppender

error, error, error, getHandler, getLayout, getName, ignoreExceptions, isStarted, parseInt, setHandler, toString

Methods inherited from class org.apache.logging.log4j.core.filter.AbstractFilterable

addFilter, getFilter, hasFilter, isFiltered, removeFilter, startFilter, stopFilter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

immediateFlush

protected final boolean immediateFlush

Immediate flush means that the underlying writer or output stream will be flushed at the end of each append operation. Immediate flush is slower but ensures that each append request is actually written. If immediateFlush is set to false, then there is a good chance that the last few logs events are not actually written to persistent media if and when the application crashes.

Constructor Detail

AbstractOutputStreamAppender

protected AbstractOutputStreamAppender(String name,
                            Layout<? extends Serializable> layout,
                            Filter filter,
                            boolean ignoreExceptions,
                            boolean immediateFlush,
                            OutputStreamManager manager)

Instantiate a WriterAppender and set the output destination to a new OutputStreamWriter initialized with os as its OutputStream.

Parameters:

name - The name of the Appender.

layout - The layout to format the message.

manager - The OutputStreamManager.

Method Detail

getManager

protected OutputStreamManager getManager()

replaceManager

protected void replaceManager(OutputStreamManager newManager)

start

public void start()

Description copied from class: AbstractAppender

Start the Appender.

Specified by:

start in interface LifeCycle

Overrides:

start in class AbstractAppender

stop

public void stop()

Description copied from class: AbstractAppender

Stop the Appender.

Specified by:

stop in interface LifeCycle

Overrides:

stop in class AbstractAppender

append

public void append(LogEvent event)

Actual writing occurs here.

Most subclasses of AbstractOutputStreamAppender will need to override this method.

Parameters:

event - The LogEvent.