Package jade.imtp.leap.JICP

Class BIFEDispatcher

java.lang.Object

jade.imtp.leap.JICP.BIFEDispatcher

All Implemented Interfaces:

FEConnectionManager, TimerListener, Dispatcher, Runnable

Direct Known Subclasses:

BIFESDispatcher

public class BIFEDispatcher
extends Object
implements FEConnectionManager, Dispatcher, TimerListener, Runnable

Class declaration

Author:

Giovanni Caire - TILAB

Field Summary

Fields

Modifier and Type	Field	Description
protected static byte	INP
protected TransportAddress	mediatorTA
protected jade.imtp.leap.JICP.BIFEDispatcher.InputManager	myInputManager
protected String	myMediatorClass
protected static byte	OUT
protected Connection	outConnection
protected boolean	refreshingInput
protected boolean	refreshingOutput

Constructor Summary

Constructors

Constructor	Description
BIFEDispatcher()

Method Summary

Modifier and Type	Method	Description
byte[]	dispatch(byte[] payload, boolean flush, int oldSessionId)	Deliver a serialized command to the BackEnd.
protected void	dispatchWhileDropped()
void	doTimeOut(Timer t)
BackEnd	getBackEnd(FrontEnd fe, Properties props)	Connect to a remote BackEnd and return a stub to communicate with it
protected JICPConnection	getConnection(TransportAddress ta)	subclasses may overwrite this to provide their version of a JICPConnection
protected void	handleInpReconnection(Connection c)
protected void	handleOutReconnection(Connection c)
protected JICPPacket	prepareDropDownRequest()
protected void	refreshInp()	Close the current InputManager (if any) and start a new one
protected void	refreshOut()	Close the current outConnection (if any) and starts a new thread that asynchronously tries to restore it.
void	run()	Asynchronously restore the OUT connection
protected void	sendKeepAlive()	Send a KEEP_ALIVE packet to the BE.
void	shutdown()	Make this BIFEDispatcher terminate.
protected void	writePacket(JICPPacket pkt, Connection c)

Methods inherited from class java.lang.Object

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

Field Detail

INP

protected static final byte INP

See Also:

Constant Field Values

OUT

protected static final byte OUT

See Also:

Constant Field Values

myMediatorClass

protected String myMediatorClass

mediatorTA

protected TransportAddress mediatorTA

outConnection

protected Connection outConnection

myInputManager

protected jade.imtp.leap.JICP.BIFEDispatcher.InputManager myInputManager

refreshingInput

protected boolean refreshingInput

refreshingOutput

protected boolean refreshingOutput

Constructor Detail

BIFEDispatcher

public BIFEDispatcher()

Method Detail

getBackEnd

public BackEnd getBackEnd(FrontEnd fe,
                          Properties props)
                   throws IMTPException

Connect to a remote BackEnd and return a stub to communicate with it

Specified by:

getBackEnd in interface FEConnectionManager

Parameters:

fe - The FrontEnd container that is requesting the connection setup.

props - Additional (implementation dependent) connection configuration properties.

Returns:

A stub of the remote BackEnd.

Throws:

IMTPException

shutdown

public void shutdown()

Make this BIFEDispatcher terminate.

Specified by:

shutdown in interface FEConnectionManager

dispatch

public byte[] dispatch(byte[] payload,
                       boolean flush,
                       int oldSessionId)
                throws ICPException

Deliver a serialized command to the BackEnd.

Specified by:

dispatch in interface Dispatcher

Returns:

The serialized response

Throws:

ICPException

refreshInp

protected void refreshInp()

Close the current InputManager (if any) and start a new one

refreshOut

protected void refreshOut()

Close the current outConnection (if any) and starts a new thread that asynchronously tries to restore it.

run

public void run()

Asynchronously restore the OUT connection

Specified by:

run in interface Runnable

handleInpReconnection

protected void handleInpReconnection(Connection c)

handleOutReconnection

protected void handleOutReconnection(Connection c)

writePacket

protected void writePacket(JICPPacket pkt,
                           Connection c)
                    throws IOException

Throws:

IOException

doTimeOut

public void doTimeOut(Timer t)

Specified by:

doTimeOut in interface TimerListener

sendKeepAlive

protected void sendKeepAlive()

Send a KEEP_ALIVE packet to the BE. This is executed within a synchronized block --> Mutual exclusion with dispatch() is guaranteed.

prepareDropDownRequest

protected JICPPacket prepareDropDownRequest()

dispatchWhileDropped

protected void dispatchWhileDropped()

getConnection

protected JICPConnection getConnection(TransportAddress ta)
                                throws IOException

subclasses may overwrite this to provide their version of a JICPConnection

Parameters:

ta -

Returns:

Throws:

IOException