Package jadex.bridge.component.streams

Class InputConnectionHandler

java.lang.Object

jadex.bridge.component.streams.AbstractConnectionHandler

jadex.bridge.component.streams.InputConnectionHandler

All Implemented Interfaces:

IAbstractConnectionHandler, IInputConnectionHandler

public class InputConnectionHandler
extends AbstractConnectionHandler
implements IInputConnectionHandler

Handler that sits between connection and message service. Is used by connection to forward user requests. Is used by the message service to signal arrived messages.

Nested Class Summary

Nested classes/interfaces inherited from class jadex.bridge.component.streams.AbstractConnectionHandler

AbstractConnectionHandler.SendInfo

Field Summary

Fields

Modifier and Type	Field	Description
protected int	ackcnt	The number of received elements after which an ack is sent.
protected java.util.Map<java.lang.Integer,Tuple2<byte[],java.lang.Boolean>>	data	The data (stored here only as long as it is out of order or incomplete).
protected java.util.TimerTask	datatimer	The current timer.
protected int	lastack	The last in order sequence number acknowledged.
protected int	lastseqno	The last sequence number.
protected int	maxackseqno	The highest yet (may be out of order) acknowledged sequence number (only used to trigger new acks every x messages).
protected int	maxbuf	The maximum buffer size for out of order packets.
protected int	maxseqno	The highest yet (may be out of order) received sequence number.
protected int	maxstored	The maximum bytes of data that can be stored in connection (without being consumed).
protected int	rseqno	The last in order received sequence number.

Fields inherited from class jadex.bridge.component.streams.AbstractConnectionHandler

ACKCLOSE, ACKCLOSE_INPUT_INITIATOR, ACKCLOSE_OUTPUT_PARTICIPANT, ACKCLOSEREQ, ACKCLOSEREQ_INPUT_PARTICIPANT, ACKCLOSEREQ_OUTPUT_INITIATOR, ACKDATA, ACKDATA_INPUT_INITIATOR, ACKDATA_OUTPUT_PARTICIPANT, ACKINIT, ACKINIT_INPUT_PARTICIPANT, ACKINIT_OUTPUT_PARTICIPANT, acktimeout, ALIVE, ALIVE_INITIATOR, ALIVE_PARTICIPANT, alivetime, CLOSE, CLOSE_INPUT_PARTICIPANT, CLOSE_OUTPUT_INITIATOR, CLOSEREQ, CLOSEREQ_INPUT_INITIATOR, CLOSEREQ_OUTPUT_PARTICIPANT, component, con, DATA, DATA_INPUT_PARTICIPANT, DATA_OUTPUT_INITIATOR, EMPTY_BYTE_ARRAY, INIT, INIT_INPUT_INITIATOR, INIT_OUTPUT_INITIATOR, leasetime, maxresends, MESSAGE_TYPE_STREAM, MESSAGETYPES, nonfunc, timer, unacked

Constructor Summary

Constructors

Constructor	Description
InputConnectionHandler(IInternalAccess component, java.util.Map<java.lang.String,java.lang.Object> nonfunc)	Create a new input connection handler.

Method Summary

Modifier and Type	Method	Description
void	addData(int seqnumber, byte[] dat)	Called from message service.
void	closeReceived(int seqno)	From initiator.
void	createDataTimer(long acktimeout)	Create a new data ack timer.
IFuture<java.lang.Void>	doClose()	Called from connection.
protected void	forwardData(byte[] data)	Forward the data to the input connection.
InputConnection	getInputConnection()	Get the input connection.
int	getNextReceivedSequenceNumber()	Get the next received sequence number.
int	getSequenceNumber()	Get the last received sequence number.
protected boolean	isStop()	Test if stop is activated (too much data arrived).
void	notifyDataRead()	Called by connection when user read some data so that other side can continue to send.
protected void	sendDataAck()	Send ack data.
protected void	sendDataAck(int startseqno, int endseqno, boolean stop)

Methods inherited from class jadex.bridge.component.streams.AbstractConnectionHandler

ackReceived, close, createAckTimer, createTask, createTask, getComponent, getConnection, getConnectionId, getExecutionFeature, getLeasetime, getMessageFeature, getMessageType, getMessageType, getNonFunctionalProperties, initReceived, isClosed, isConnectionAlive, notifyInited, scheduleStep, sendAcknowledgedMessage, sendAlive, sendInit, sendTask, setAliveTime, setConnection, setNonFunctionalProperties, waitForRealDelay

Methods inherited from class java.lang.Object

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

Methods inherited from interface jadex.bridge.component.streams.IAbstractConnectionHandler

getNonFunctionalProperties, notifyInited, sendInit, setConnection

Field Detail

rseqno

protected int rseqno

The last in order received sequence number.

maxseqno

protected int maxseqno

The highest yet (may be out of order) received sequence number.

maxackseqno

protected int maxackseqno

The highest yet (may be out of order) acknowledged sequence number (only used to trigger new acks every x messages).

maxbuf

protected int maxbuf

The maximum buffer size for out of order packets.

maxstored

protected int maxstored

The maximum bytes of data that can be stored in connection (without being consumed).

data

protected java.util.Map<java.lang.Integer,Tuple2<byte[],java.lang.Boolean>> data

The data (stored here only as long as it is out of order or incomplete). Ready data will be forwarded to the connection. Also remembers if an acknowledgement has been sent.

lastack

protected int lastack

The last in order sequence number acknowledged.

ackcnt

protected int ackcnt

The number of received elements after which an ack is sent.

datatimer

protected java.util.TimerTask datatimer

The current timer.

lastseqno

protected int lastseqno

The last sequence number.

Constructor Detail

InputConnectionHandler

public InputConnectionHandler(IInternalAccess component,
                              java.util.Map<java.lang.String,java.lang.Object> nonfunc)

Create a new input connection handler.

Method Detail

closeReceived

public void closeReceived(int seqno)

From initiator. Called when a close message was received. participant acks and closes

Parameters:

seqno - The last data packet.

doClose

public IFuture<java.lang.Void> doClose()

Called from connection. Initiates closing procedure (is different for initiator and participant).

Specified by:

doClose in interface IAbstractConnectionHandler

Overrides:

doClose in class AbstractConnectionHandler

addData

public void addData(int seqnumber,
                    byte[] dat)

Called from message service. Uses: data

Parameters:

data - The new data.

forwardData

protected void forwardData(byte[] data)

Forward the data to the input connection.

getSequenceNumber

public int getSequenceNumber()

Get the last received sequence number.

Returns:

the sequence number.

getNextReceivedSequenceNumber

public int getNextReceivedSequenceNumber()

Get the next received sequence number.

Returns:

the sequence number.

createDataTimer

public void createDataTimer(long acktimeout)

Create a new data ack timer. Sends an ack automatically after some timeout.

sendDataAck

protected void sendDataAck()

Send ack data.

sendDataAck

protected void sendDataAck(int startseqno,
                           int endseqno,
                           boolean stop)

getInputConnection

public InputConnection getInputConnection()

Get the input connection.

Returns:

The input connection.

isStop

protected boolean isStop()

Test if stop is activated (too much data arrived).

notifyDataRead

public void notifyDataRead()

Called by connection when user read some data so that other side can continue to send.

Specified by:

notifyDataRead in interface IInputConnectionHandler