org.apache.catalina.tribes.transport.bio
Class BioReplicationTask

java.lang.Object
  org.apache.catalina.tribes.transport.AbstractRxTask
      org.apache.catalina.tribes.transport.bio.BioReplicationTask

All Implemented Interfaces:

Runnable

public class BioReplicationTask
extends AbstractRxTask

A worker thread class which can drain channels and echo-back the input. Each instance is constructed with a reference to the owning thread pool object. When started, the thread loops forever waiting to be awakened to service the channel associated with a SelectionKey object. The worker is tasked by calling its serviceChannel() method with a SelectionKey object. The serviceChannel() method stores the key reference in the thread object then calls notify() to wake it up. When the channel has been drained, the worker thread returns itself to its parent pool.

Version:

$Id: BioReplicationTask.java 1059560 2011-01-16 13:54:28Z markt $

Author:

Filip Hanik

Field Summary

protected ObjectReader	reader
protected Socket	socket

Fields inherited from class org.apache.catalina.tribes.transport.AbstractRxTask

OPTION_DIRECT_BUFFER, useBufferPool

Constructor Summary

BioReplicationTask(ListenCallback callback)

Method Summary

void	close()
protected void	drainSocket() The actual code which drains the channel associated with the given key.
protected void	execute(ObjectReader reader)
void	run()
protected void	sendAck(byte[] command) send a reply-acknowledgment (6,2,3)
void	serviceSocket(Socket socket, ObjectReader reader)

Methods inherited from class org.apache.catalina.tribes.transport.AbstractRxTask

getCallback, getOptions, getTaskPool, getUseBufferPool, isDoRun, setCallback, setDoRun, setOptions, setTaskPool, setUseBufferPool

Methods inherited from class java.lang.Object

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

Field Detail

socket

protected Socket socket

reader

protected ObjectReader reader

Constructor Detail

BioReplicationTask

public BioReplicationTask(ListenCallback callback)

Method Detail

run

public void run()

serviceSocket

public void serviceSocket(Socket socket,
                          ObjectReader reader)

execute

protected void execute(ObjectReader reader)
                throws Exception

Throws:

Exception

drainSocket

protected void drainSocket()
                    throws Exception

The actual code which drains the channel associated with the given key. This method assumes the key has been modified prior to invocation to turn off selection interest in OP_READ. When this method completes it re-enables OP_READ and calls wakeup() on the selector so the selector will resume watching this channel.

Throws:

Exception

sendAck

protected void sendAck(byte[] command)

send a reply-acknowledgment (6,2,3)

Parameters:

command -

close

public void close()

Overrides:

close in class AbstractRxTask