org.apache.log4j.net

Class TelnetAppender

java.lang.Object

org.apache.log4j.AppenderSkeleton

org.apache.log4j.net.TelnetAppender

All Implemented Interfaces:

Appender, OptionHandler

public class TelnetAppender
extends AppenderSkeleton

The TelnetAppender is a log4j appender that specializes in writing to a read-only socket. The output is provided in a telnet-friendly way so that a log can be monitored over TCP/IP. Clients using telnet connect to the socket and receive log data. This is handy for remote monitoring, especially when monitoring a servlet.

Here is a list of the available configuration options:

Name	Requirement	Description	Sample Value
Port	optional	This parameter determines the port to use for announcing log events. The default port is 23 (telnet).	5875

Author:

Jay Funnell

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	TelnetAppender.SocketHandler The SocketHandler class is used to accept connections from clients.

Field Summary

Fields inherited from class org.apache.log4j.AppenderSkeleton

closed, errorHandler, headFilter, layout, name, tailFilter, threshold

Constructor Summary

Constructors

Constructor and Description
TelnetAppender()

Method Summary

Modifier and Type	Method and Description
void	activateOptions() all of the options have been set, create the socket handler and wait for connections.
protected void	append(LoggingEvent event) Handles a log event.
void	close() shuts down the appender.
int	getPort()
boolean	requiresLayout() This appender requires a layout to format the text to the attached client(s).
void	setPort(int port)

Methods inherited from class org.apache.log4j.AppenderSkeleton

addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setErrorHandler, setLayout, setName, setThreshold

Methods inherited from class java.lang.Object

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

Constructor Detail

TelnetAppender

public TelnetAppender()

Method Detail

requiresLayout

public boolean requiresLayout()

This appender requires a layout to format the text to the attached client(s).

activateOptions

public void activateOptions()

all of the options have been set, create the socket handler and wait for connections.

Specified by:

activateOptions in interface OptionHandler

Overrides:

activateOptions in class AppenderSkeleton

getPort

public int getPort()

setPort

public void setPort(int port)

close

public void close()

shuts down the appender.

append

protected void append(LoggingEvent event)

Handles a log event. For this appender, that means writing the message to each connected client.

Specified by:

append in class AppenderSkeleton