org.ow2.proactive.scheduler.common.util.logforwarder.util

Class LoggingOutputStream

java.lang.Object

java.io.OutputStream

org.ow2.proactive.scheduler.common.util.logforwarder.util.LoggingOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class LoggingOutputStream
extends OutputStream

An OutputStream that flushes out to a Category.

See Also:

Category

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buf The internal buffer where data is stored.
protected int	count The number of valid bytes in the buffer.
static int	DEFAULT_BUFFER_LENGTH The default number of bytes in the buffer.
protected boolean	hasBeenClosed Used to maintain the contract of #close().
protected org.apache.log4j.Level	level The priority to use when writing to the Category.
protected org.apache.log4j.Logger	logger The category to write to.

Constructor Summary

Constructors

Constructor and Description
LoggingOutputStream(org.apache.log4j.Logger log)
LoggingOutputStream(org.apache.log4j.Logger log, org.apache.log4j.Level level) Creates the LoggingOutputStream to flush to the given Category.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this output stream and releases any system resources associated with this stream.
void	flush() Flushes this output stream and forces any buffered output bytes to be written out.
void	write(int b) Writes the specified byte to this 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

DEFAULT_BUFFER_LENGTH

public static final int DEFAULT_BUFFER_LENGTH

The default number of bytes in the buffer. =2048

See Also:

Constant Field Values

hasBeenClosed

protected boolean hasBeenClosed

Used to maintain the contract of #close().

buf

protected byte[] buf

The internal buffer where data is stored.

count

protected int count

The number of valid bytes in the buffer. This value is always in the range 0 through buf.length; elements buf[0] through buf[count-1] contain valid byte data.

logger

protected org.apache.log4j.Logger logger

The category to write to.

level

protected org.apache.log4j.Level level

The priority to use when writing to the Category.

Constructor Detail

LoggingOutputStream

public LoggingOutputStream(org.apache.log4j.Logger log,
                           org.apache.log4j.Level level)
                    throws IllegalArgumentException

Creates the LoggingOutputStream to flush to the given Category.

Parameters:

log - the Logger to write to

level - the Level to use when writing to the Logger

Throws:

IllegalArgumentException - if cat == null or priority == null

LoggingOutputStream

public LoggingOutputStream(org.apache.log4j.Logger log)
                    throws IllegalArgumentException

Throws:

IllegalArgumentException

Method Detail

close

public void close()

Closes this output stream and releases any system resources associated with this stream. The general contract of close is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class OutputStream

write

public void write(int b)
           throws IOException

Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Specified by:

write in class OutputStream

Parameters:

b - the byte to write

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

flush

public void flush()

Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream