Package jmri.jmrix.lenz

Class XNetTrafficController

java.lang.Object

jmri.jmrix.AbstractMRTrafficController

jmri.jmrix.lenz.XNetTrafficController

All Implemented Interfaces:

XNetInterface

Direct Known Subclasses:

XNetPacketizer, XNetTrafficRouter

public abstract class XNetTrafficController
extends AbstractMRTrafficController
implements XNetInterface

Abstract base class for implementations of XNetInterface.

This provides just the basic interface.

See Also:

• AbstractMRTrafficController

Nested Class Summary

Nested classes/interfaces inherited from class jmri.jmrix.AbstractMRTrafficController

AbstractMRTrafficController.RcvNotifier, AbstractMRTrafficController.XmtNotifier

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final LinkedBlockingQueue<XNetListener>	highPriorityListeners
(package private) final LinkedBlockingQueue<XNetMessage>	highPriorityQueue
(package private) final LenzCommandStation	mCommandStation	Reference to the command station in communication here.
protected final HashMap<XNetListener,Integer>	mListenerMasks
(package private) XNetSystemConnectionMemo	mMemo	Reference to the system connection memo.
(package private) static XNetTrafficController	self

Fields inherited from class jmri.jmrix.AbstractMRTrafficController

allowUnexpectedReply, AUTORETRYSTATE, cmdListeners, connectionError, controller, flushReceiveChars, IDLESTATE, istream, listenerQueue, maxRcvExceptionCount, mCurrentMode, mCurrentState, mLastSender, msgQueue, mWaitBeforePoll, NORMALMODE, NOTIFIEDSTATE, OKSENDMSGSTATE, ostream, POLLSTATE, PROGRAMINGMODE, rcvException, rcvThread, replyInDispatch, threadStopRequest, timeoutFlag, timeouts, WAITMSGREPLYSTATE, WAITREPLYINNORMMODESTATE, WAITREPLYINPROGMODESTATE, waitTimePoll, xmtException, xmtRunnable, xmtThread

Fields inherited from interface jmri.jmrix.lenz.XNetInterface

ALL, COMMINFO, CONSIST, CS_INFO, FEEDBACK, INTERFACE, PROGRAMMING, THROTTLE

Constructor Summary

Constructors

Constructor	Description
XNetTrafficController(LenzCommandStation pCommandStation)	Create a new XNetTrafficController.

Method Summary

Modifier and Type	Method	Description
void	addXNetListener(int mask, XNetListener l)	Request notification of things happening on the XNet.
void	connectPort(AbstractPortController p)	Make connection to existing PortController object.
protected boolean	endOfMessage(AbstractMRReply msg)
protected AbstractMRMessage	enterNormalMode()	Return the value of getExitProgModeMsg().
protected AbstractMRMessage	enterProgMode()	This method has to be available, even though it doesn't do anything on Lenz.
void	forwardMessage(AbstractMRListener reply, AbstractMRMessage m)	Forward a preformatted XNetMessage to a specific listener interface.
void	forwardReply(AbstractMRListener client, AbstractMRReply m)	Forward a preformatted XNetMessage to the registered XNetListeners.
LenzCommandStation	getCommandStation()	Get access to communicating command station object.
XNetFeedbackMessageCache	getFeedbackMessageCache()	Return an XNetFeedbackMessageCache object associated with this traffic controller.
XNetSystemConnectionMemo	getSystemConnectionMemo()	Get access to the system connection memo associated with this traffic controller.
protected void	handleTimeout(AbstractMRMessage msg, AbstractMRListener l)
(package private) boolean	hasTimeSlot()
protected void	loadChars(AbstractMRReply msg, DataInputStream istream)	Get characters from the input source, and file a message.
protected AbstractMRReply	newReply()
protected void	notifyMessage(AbstractMRMessage m, AbstractMRListener notMe)	Forward a Message to registered listeners.
protected AbstractMRMessage	pollMessage()	Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TrafficController should just sleep.
protected AbstractMRListener	pollReplyHandler()
protected boolean	programmerIdle()	Check to see if the programmer associated with this interface is idle or not.
void	removeXNetListener(int mask, XNetListener l)	Stop notification of things happening on the XNet.
void	sendHighPriorityXNetMessage(XNetMessage m, XNetListener reply)
void	setSystemConnectionMemo(XNetSystemConnectionMemo m)	Set the system connection memo associated with this traffic controller.

Methods inherited from class jmri.jmrix.AbstractMRTrafficController

addConsoleListener, addHeaderToOutput, addListener, addTrailerToOutput, canReceive, connectionWarn, disconnectPort, distributeReply, enterProgModeDelayTime, forwardToPort, getLastSender, getPortName, getSynchronizeRx, handleOneIncomingReply, hasTimeouts, lengthOfByteStream, newRcvNotifier, notifyReply, portReadyToSend, portWarn, portWarnTCP, readByteProtected, receiveLoop, recovery, removeListener, reportReceiveLoopException, resetTimeout, sendMessage, setAllowUnexpectedReply, setSynchronizeRx, status, terminate, terminateThreads, transmitLoop, transmitWait, unexpectedReplyStateError, waitForStartOfReply, warnOnTimeout

Methods inherited from class java.lang.Object

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

Methods inherited from interface jmri.jmrix.lenz.XNetInterface

sendXNetMessage, status

Field Details

mListenerMasks

protected final HashMap<XNetListener,Integer> mListenerMasks

self

static XNetTrafficController self

highPriorityQueue

final LinkedBlockingQueue<XNetMessage> highPriorityQueue

highPriorityListeners

final LinkedBlockingQueue<XNetListener> highPriorityListeners

mCommandStation

final LenzCommandStation mCommandStation

Reference to the command station in communication here.

mMemo

XNetSystemConnectionMemo mMemo

Reference to the system connection memo.

Constructor Details

XNetTrafficController

XNetTrafficController(LenzCommandStation pCommandStation)

Create a new XNetTrafficController. Must provide a LenzCommandStation reference at creation time.

Parameters:

pCommandStation - reference to associated command station object, preserved for later.

Method Details

connectPort

public void connectPort(AbstractPortController p)

Make connection to existing PortController object.

Overrides:

connectPort in class AbstractMRTrafficController

Parameters:

p - the PortController

forwardMessage

public void forwardMessage(AbstractMRListener reply,
 AbstractMRMessage m)

Forward a preformatted XNetMessage to a specific listener interface.

Specified by:

forwardMessage in class AbstractMRTrafficController

Parameters:

m - Message to send

reply - abstract listener.

forwardReply

public void forwardReply(AbstractMRListener client,
 AbstractMRReply m)

Forward a preformatted XNetMessage to the registered XNetListeners.

NOTE: this drops the packet if the checksum is bad.

Specified by:

forwardReply in class AbstractMRTrafficController

Parameters:

client - is the client getting the message

m - Message to send

sendHighPriorityXNetMessage

public void sendHighPriorityXNetMessage(XNetMessage m,
 XNetListener reply)

pollMessage

protected AbstractMRMessage pollMessage()

Description copied from class: AbstractMRTrafficController

Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TrafficController should just sleep.

Specified by:

pollMessage in class AbstractMRTrafficController

Returns:

Formatted poll message

pollReplyHandler

protected AbstractMRListener pollReplyHandler()

Specified by:

pollReplyHandler in class AbstractMRTrafficController

addXNetListener

public void addXNetListener(int mask,
 XNetListener l)

Description copied from interface: XNetInterface

Request notification of things happening on the XNet.

The same listener can register multiple times with different masks. (Multiple registrations with a single mask value are equivalent to a single registration) Mask values are defined as class constants. Note that these are bit masks, and should be OR'd, not added, if multiple values are desired.

The event notification contains the received message as source, not this object, so that we can notify of an incoming message to multiple places and then move on.

Specified by:

addXNetListener in interface XNetInterface

Parameters:

mask - The OR of the key values of messages to be reported (to reduce traffic, provide for listeners interested in different things)

l - Object to be notified of new messages as they arrive.

removeXNetListener

public void removeXNetListener(int mask,
 XNetListener l)

Description copied from interface: XNetInterface

Stop notification of things happening on the XNet.

Note that mask and XNetListener must match a previous request exactly.

Specified by:

removeXNetListener in interface XNetInterface

Parameters:

mask - listening mask.

l - listener to remove notifications for.

enterProgMode

protected AbstractMRMessage enterProgMode()

This method has to be available, even though it doesn't do anything on Lenz.

Specified by:

enterProgMode in class AbstractMRTrafficController

Returns:

any message that needs to be returned to the Command Station to change modes. If no message is needed, returns null.

See Also:

• AbstractMRTrafficController.enterNormalMode()

enterNormalMode

protected AbstractMRMessage enterNormalMode()

Return the value of getExitProgModeMsg().

Specified by:

enterNormalMode in class AbstractMRTrafficController

Returns:

any message that needs to be returned to the Command Station to change modes. If no message is needed, returns null.

See Also:

• AbstractMRTrafficController.enterProgMode()

programmerIdle

protected boolean programmerIdle()

Check to see if the programmer associated with this interface is idle or not.

Overrides:

programmerIdle in class AbstractMRTrafficController

Returns:

true if not busy programming

endOfMessage

protected boolean endOfMessage(AbstractMRReply msg)

Specified by:

endOfMessage in class AbstractMRTrafficController

newReply

protected AbstractMRReply newReply()

Specified by:

newReply in class AbstractMRTrafficController

loadChars

protected void loadChars(AbstractMRReply msg,
 DataInputStream istream)
                  throws IOException

Get characters from the input source, and file a message.

Returns only when the message is complete.

Only used in the Receive thread.

Overrides:

loadChars in class AbstractMRTrafficController

Parameters:

msg - message to fill

istream - character source.

Throws:

IOException - when presented by the input source.

handleTimeout

protected void handleTimeout(AbstractMRMessage msg,
 AbstractMRListener l)

Overrides:

handleTimeout in class AbstractMRTrafficController

notifyMessage

protected void notifyMessage(AbstractMRMessage m,
 AbstractMRListener notMe)

Description copied from class: AbstractMRTrafficController

Forward a Message to registered listeners.

Overrides:

notifyMessage in class AbstractMRTrafficController

Parameters:

m - Message to be forwarded intact

notMe - One (optional) listener to be skipped, usually because it's the originating object.

getCommandStation

public LenzCommandStation getCommandStation()

Get access to communicating command station object.

Returns:

associated Command Station object

getSystemConnectionMemo

public XNetSystemConnectionMemo getSystemConnectionMemo()

Get access to the system connection memo associated with this traffic controller.

Returns:

associated systemConnectionMemo object

setSystemConnectionMemo

public void setSystemConnectionMemo(XNetSystemConnectionMemo m)

Set the system connection memo associated with this traffic controller.

Parameters:

m - associated systemConnectionMemo object

getFeedbackMessageCache

public XNetFeedbackMessageCache getFeedbackMessageCache()

Return an XNetFeedbackMessageCache object associated with this traffic controller.

Returns:

the feedback message cache. One is provided if null.

hasTimeSlot

boolean hasTimeSlot()

Returns:

whether or not this connection currently has a timeslot from the Command station.