org.apache.logging.log4j.core.appender

Class AbstractOutputStreamAppender<M extends OutputStreamManager>

java.lang.Object

org.apache.logging.log4j.core.AbstractLifeCycle

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

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

org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender<M>

Type Parameters:

M - The kind of OutputStreamManager under management

All Implemented Interfaces:

Serializable, Appender, Filterable, LifeCycle

Direct Known Subclasses:

ConsoleAppender, FileAppender, MemoryMappedFileAppender, RandomAccessFileAppender, RollingFileAppender, RollingRandomAccessFileAppender, SocketAppender

public abstract class AbstractOutputStreamAppender<M extends OutputStreamManager>
extends AbstractAppender

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

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.logging.log4j.core.LifeCycle

LifeCycle.State

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.AbstractLifeCycle

DEFAULT_STOP_TIMEOUT, DEFAULT_STOP_TIMEUNIT, LOGGER

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	append(LogEvent event) Actual writing occurs here.
M	getManager() Gets the manager.
void	start() Make the Filter available for use.
void	stop() Cleanup the Filter.

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

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

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

addFilter, getFilter, hasFilter, isFiltered, removeFilter

Methods inherited from class org.apache.logging.log4j.core.AbstractLifeCycle

equalsImpl, getState, hashCodeImpl, isInitialized, isStarted, isStarting, isStopped, isStopping, setStarted, setStarting, setState, setStopped, setStopping

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.logging.log4j.core.LifeCycle

getState, isStarted, isStopped

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,
                                       M 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

public M getManager()

Gets the manager.

Returns:

the manager.

start

public void start()

Description copied from class: AbstractFilterable

Make the Filter available for use.

Specified by:

start in interface LifeCycle

Overrides:

start in class AbstractFilterable

stop

public void stop()

Description copied from class: AbstractFilterable

Cleanup the Filter.

Specified by:

stop in interface LifeCycle

Overrides:

stop in class AbstractFilterable

append

public void append(LogEvent event)

Actual writing occurs here.

Most subclasses of AbstractOutputStreamAppender will need to override this method.

Parameters:

event - The LogEvent.