org.apache.log4j.net
Class TelnetAppender

java.lang.Object
  extended by org.apache.log4j.AppenderSkeleton
      extended by 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
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
TelnetAppender()
           
 
Method Summary
 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


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