org.apache.karaf.util.process

Class PumpStreamHandler

java.lang.Object

org.apache.karaf.util.process.PumpStreamHandler

public class PumpStreamHandler
extends Object

Copies standard output and error of children streams to standard output and error of the parent.

Constructor Summary

Constructors

Constructor and Description
PumpStreamHandler(InputStream in, OutputStream out, OutputStream err)
PumpStreamHandler(InputStream in, OutputStream out, OutputStream err, String name)
PumpStreamHandler(OutputStream outAndErr)
PumpStreamHandler(OutputStream out, OutputStream err)

Method Summary

Modifier and Type	Method and Description
void	attach(Process p) Attach to a child streams from the given process.
protected void	createChildErrorPump(InputStream in, OutputStream out) Create the pump to handle error output.
protected void	createChildOutputPump(InputStream in, OutputStream out) Create the pump to handle child output.
protected StreamPumper	createInputPump(InputStream in, OutputStream out, boolean closeWhenExhausted) Create a stream pumper to copy the given input stream to the given output stream.
protected StreamPumper	createPump(InputStream in, OutputStream out) Create a stream pumper to copy the given input stream to the given output stream.
protected StreamPumper	createPump(InputStream in, OutputStream out, boolean closeWhenExhausted) Create a stream pumper to copy the given input stream to the given output stream.
StreamPumper	getErrorPump()
StreamPumper	getOutputPump()
void	setChildErrorStream(InputStream in) Set the input stream from which to read the standard error of the child.
void	setChildInputStream(OutputStream out) Set the output stream by means of which input can be sent to the child.
void	setChildOutputStream(InputStream in) Set the input stream from which to read the standard output of the child.
void	start() Start pumping the streams.
void	stop() Stop pumping the streams.

Methods inherited from class java.lang.Object

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

Constructor Detail

PumpStreamHandler

public PumpStreamHandler(InputStream in,
                         OutputStream out,
                         OutputStream err,
                         String name)

PumpStreamHandler

public PumpStreamHandler(InputStream in,
                         OutputStream out,
                         OutputStream err)

PumpStreamHandler

public PumpStreamHandler(OutputStream out,
                         OutputStream err)

PumpStreamHandler

public PumpStreamHandler(OutputStream outAndErr)

Method Detail

setChildOutputStream

public void setChildOutputStream(InputStream in)

Set the input stream from which to read the standard output of the child.

Parameters:

in - the the child output stream.

setChildErrorStream

public void setChildErrorStream(InputStream in)

Set the input stream from which to read the standard error of the child.

Parameters:

in - set the child error stream.

setChildInputStream

public void setChildInputStream(OutputStream out)

Set the output stream by means of which input can be sent to the child.

Parameters:

out - set the child output stream.

attach

public void attach(Process p)

Attach to a child streams from the given process.

Parameters:

p - The process to attach to.

start

public void start()

Start pumping the streams.

stop

public void stop()

Stop pumping the streams.

createChildOutputPump

protected void createChildOutputPump(InputStream in,
                                     OutputStream out)

Create the pump to handle child output.

Parameters:

in - the child input stream.

out - the child output stream.

createChildErrorPump

protected void createChildErrorPump(InputStream in,
                                    OutputStream out)

Create the pump to handle error output.

Parameters:

in - the child input stream.

out - the child output stream.

createPump

protected StreamPumper createPump(InputStream in,
                                  OutputStream out)

Create a stream pumper to copy the given input stream to the given output stream.

Parameters:

in - the child input stream.

out - the child output stream.

Returns:

A thread object that does the pumping.

createPump

protected StreamPumper createPump(InputStream in,
                                  OutputStream out,
                                  boolean closeWhenExhausted)

Create a stream pumper to copy the given input stream to the given output stream.

Parameters:

in - The input stream to copy from.

out - The output stream to copy to.

closeWhenExhausted - If true close the input stream.

Returns:

A thread object that does the pumping.

createInputPump

protected StreamPumper createInputPump(InputStream in,
                                       OutputStream out,
                                       boolean closeWhenExhausted)

Create a stream pumper to copy the given input stream to the given output stream. Used for standard input.

Parameters:

in - The input stream to copy from.

out - The output stream to copy to.

closeWhenExhausted - If true close the input stream.

Returns:

A thread object that does the pumping.

getOutputPump

public StreamPumper getOutputPump()

getErrorPump

public StreamPumper getErrorPump()