com.facebook.buck.util

Class ForwardingProcessListener

java.lang.Object

com.facebook.buck.util.ForwardingProcessListener

All Implemented Interfaces:

ListeningProcessExecutor.ProcessListener

public class ForwardingProcessListener
extends Object
implements ListeningProcessExecutor.ProcessListener

Constructor Summary

Constructors

Constructor and Description
ForwardingProcessListener(OutputStream stdout, OutputStream stderr)

Method Summary

Modifier and Type	Method and Description
void	onExit(int exitCode) Called just after the process exits.
void	onStart(ListeningProcessExecutor.LaunchedProcess process) Called just after the process starts.
void	onStderr(ByteBuffer buffer, boolean closed) Called when the process writes bytes to stderr.
boolean	onStdinReady(ByteBuffer buffer) Called when the process is ready to receive bytes on stdin.
void	onStdout(ByteBuffer buffer, boolean closed) Called when the process writes bytes to stdout.

Methods inherited from class java.lang.Object

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

Constructor Detail

ForwardingProcessListener

public ForwardingProcessListener(OutputStream stdout,
                                 OutputStream stderr)

Method Detail

onStart

public void onStart(ListeningProcessExecutor.LaunchedProcess process)

Description copied from interface: ListeningProcessExecutor.ProcessListener

Called just after the process starts.

Specified by:

onStart in interface ListeningProcessExecutor.ProcessListener

onExit

public void onExit(int exitCode)

Description copied from interface: ListeningProcessExecutor.ProcessListener

Called just after the process exits.

Specified by:

onExit in interface ListeningProcessExecutor.ProcessListener

onStdout

public void onStdout(ByteBuffer buffer,
                     boolean closed)

Description copied from interface: ListeningProcessExecutor.ProcessListener

Called when the process writes bytes to stdout.

Before this method returns, you must set buffer.position() to indicate how many bytes you have consumed.

If you do not consume the entire buffer, any remaining bytes will be passed back to you upon the next invocation (for example, when implementing a UTF-8 decoder which might contain a byte sequence spanning multiple reads).

If closed is true, then stdout has been closed and no more bytes will be received.

Specified by:

onStdout in interface ListeningProcessExecutor.ProcessListener

onStderr

public void onStderr(ByteBuffer buffer,
                     boolean closed)

Description copied from interface: ListeningProcessExecutor.ProcessListener

Called when the process writes bytes to stderr.

Before this method returns, you must set buffer.position() to indicate how many bytes you have consumed.

If you do not consume the entire buffer, any remaining bytes will be passed back to you upon the next invocation (for example, when implementing a UTF-8 decoder which might contain a byte sequence spanning multiple reads).

If closed is true, then stdout has been closed and no more bytes will be received.

Specified by:

onStderr in interface ListeningProcessExecutor.ProcessListener

onStdinReady

public boolean onStdinReady(ByteBuffer buffer)

Description copied from interface: ListeningProcessExecutor.ProcessListener

Called when the process is ready to receive bytes on stdin.

Before this method returns, you must set the buffer's position and limit (for example, by invoking Buffer.flip()) to indicate how much data is in the buffer before returning from this method.

You must first call ListeningProcessExecutor.LaunchedProcess.wantWrite() at least once before this method will be invoked.

If not all of the data needed to be written will fit in buffer, you can return true to indicate that you would like to write more data.

Otherwise, return false if you have no more data to write to stdin. (You can always invoke ListeningProcessExecutor.LaunchedProcess.wantWrite() any time in the future.

Specified by:

onStdinReady in interface ListeningProcessExecutor.ProcessListener