org.apache.log.util
Class LoggerOutputStream

java.lang.Object
  java.io.OutputStream
      org.apache.log.util.LoggerOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class LoggerOutputStream
extends java.io.OutputStream

Redirect an output stream to a logger. This class is useful to redirect standard output or standard error to a Logger. An example use is

 final LoggerOutputStream outputStream =
     new LoggerOutputStream( logger, Priority.DEBUG );
 final PrintStream output = new PrintStream( outputStream, true );

 System.setOut( output );
 

Author:

Avalon Development Team, Peter Donald

Field Summary

private boolean	m_closed
private Logger	m_logger
private java.lang.StringBuffer	m_output
private Priority	m_priority

Constructor Summary

LoggerOutputStream(Logger logger, Priority priority)
Construct OutputStreamLogger to write to a particular logger at a particular priority.

Method Summary

private void	checkValid() Make sure stream is valid.
void	close() Shutdown stream.
void	flush() Flush data to underlying logger.
void	write(int data) Write a single byte of data to output stream.

Methods inherited from class java.io.OutputStream

write, write

Methods inherited from class java.lang.Object

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

Field Detail

m_logger

private final Logger m_logger

m_priority

private final Priority m_priority

m_output

private final java.lang.StringBuffer m_output

m_closed

private boolean m_closed

Constructor Detail

LoggerOutputStream

public LoggerOutputStream(Logger logger,
                          Priority priority)

Construct OutputStreamLogger to write to a particular logger at a particular priority.

Parameters:

logger - the logger to write to

priority - the priority at which to log

Method Detail

close

public void close()
           throws java.io.IOException

Shutdown stream.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException - if an error occurs while closing the stream

write

public void write(int data)
           throws java.io.IOException

Write a single byte of data to output stream.

Specified by:

write in class java.io.OutputStream

Parameters:

data - the byte of data

Throws:

java.io.IOException - if an error occurs

flush

public void flush()
           throws java.io.IOException

Flush data to underlying logger.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException - if an error occurs

checkValid

private void checkValid()
                 throws java.io.IOException

Make sure stream is valid.

Throws:

java.io.IOException - if an error occurs