// Called by a starting up container.
void beginContainer() {
myLogger.log(
Logger.INFO,
"----------------------------------\n"
+ getCopyrightNotice()
+ "----------------------------------------");
if (activeContainers == 0) {
// Initialize and start up the timer dispatcher
TimerDispatcher theDispatcher = TimerDispatcher.getTimerDispatcher();
// #MIDP_EXCLUDE_BEGIN
// Set up group and attributes for time critical threads
criticalThreads = new ThreadGroup("JADE time-critical threads");
criticalThreads.setMaxPriority(Thread.MAX_PRIORITY);
Thread t = new Thread(criticalThreads, theDispatcher);
t.setPriority(criticalThreads.getMaxPriority());
t.setName("JADE Timer dispatcher");
// #MIDP_EXCLUDE_END
/*#MIDP_INCLUDE_BEGIN
Thread t = new Thread(theDispatcher);
#MIDP_INCLUDE_END*/
theDispatcher.setThread(t);
// TimerDispatcher.setTimerDispatcher(theDispatcher);
theDispatcher.start();
}
++activeContainers;
}
protected void handleMessage(ACLMessage msg) {
try {
receivedContentElement = myAgent.getContentManager().extractContent(msg);
Object keyCel = extractKeyContentElement(receivedContentElement);
if (myLogger.isLoggable(Logger.FINE)) {
myLogger.log(
Logger.FINE,
"Agent "
+ myAgent.getName()
+ " - Serving "
+ keyCel.getClass().getName()
+ " "
+ ACLMessage.getPerformative(msg.getPerformative()));
}
Method m = findServerMethod(keyCel, msg.getPerformative());
if (m != null) {
try {
m.invoke(serverDelegate, new Object[] {keyCel, msg});
} catch (InvocationTargetException ite) {
handleServingFailure(ite.getCause(), keyCel, msg);
} catch (Exception e) {
// Since we only use public methods with proper arguments this can only happen if the
// serverDelegate class is not accessible
handleServingFailure(e, keyCel, msg);
}
} else {
handleUnsupported(keyCel, msg);
}
} catch (ContentException ce) {
handleNotUnderstood(ce, msg);
}
}
/** Handle a connection DROP_DOWN request from the FE. */
protected void handleDropDown(Connection c, JICPPacket pkt, InetAddress addr, int port) {
if (myLogger.isLoggable(Logger.INFO)) {
myLogger.log(Logger.INFO, myID + ": DROP_DOWN request received.");
}
try {
// If the INP connection is down or we have some postponed command
// to flush, refuse dropping the connection
if (inpManager.isConnected() && inpManager.isEmpty()) {
JICPPacket rsp =
new JICPPacket(JICPProtocol.RESPONSE_TYPE, JICPProtocol.DEFAULT_INFO, null);
c.writePacket(rsp);
inpManager.resetConnection();
outManager.resetConnection();
connectionDropped = true;
} else {
myLogger.log(Logger.WARNING, myID + ": DROP_DOWN request refused.");
JICPPacket rsp = new JICPPacket(JICPProtocol.ERROR_TYPE, getReconnectInfo(), null);
c.writePacket(rsp);
}
} catch (Exception e) {
myLogger.log(Logger.WARNING, myID + ": Error writing DROP_DOWN response. " + e);
}
}
/**
* Overrides the TickerBehaviour, defining how to update the location on the df (registration to
* DF has already been performed during agent setup). Three properties are defined for storing
* latitude/longitude/altitude. Only latitude and longitude are used, though.
*/
protected void onTick() {
try {
MsnAgent agent = (MsnAgent) myAgent;
DFAgentDescription description = agent.getAgentDescription();
ServiceDescription serviceDescription =
(ServiceDescription) description.getAllServices().next();
serviceDescription.clearAllProperties();
// retrieve
ContactLocation curMyLoc = ContactManager.getInstance().getMyContactLocation();
if (!curMyLoc.equals(myContactLocation)) {
Property p = new Property(PROPERTY_NAME_LOCATION_LAT, new Double(curMyLoc.getLatitude()));
serviceDescription.addProperties(p);
p = new Property(PROPERTY_NAME_LOCATION_LONG, new Double(curMyLoc.getLongitude()));
serviceDescription.addProperties(p);
p = new Property(PROPERTY_NAME_LOCATION_ALT, new Double(curMyLoc.getAltitude()));
serviceDescription.addProperties(p);
DFService.modify(myAgent, description);
myContactLocation = curMyLoc;
}
} catch (FIPAException fe) {
myLogger.log(Logger.SEVERE, "Error in updating DF", fe);
} catch (Exception e) {
myLogger.log(
Logger.SEVERE,
"*** Uncaught Exception for agent " + myAgent.getLocalName() + " ***",
e);
}
}
private final void checkTerminatedInfo(JICPPacket pkt) {
if ((pkt.getInfo() & JICPProtocol.TERMINATED_INFO) != 0) {
peerActive = false;
if (myLogger.isLoggable(Logger.INFO)) {
myLogger.log(Logger.INFO, myID + ": Peer termination notification received");
}
}
}
@Override
public void action() {
while ((msg = myAgent.receive(mt)) != null) {
switch (msg.getPerformative()) {
case ACLMessage.REQUEST:
if (msg.getProtocol().equals(Constants.REQUEST_ROUTE)) {
AIDPair destSrcPair;
try {
destSrcPair = (AIDPair) msg.getContentObject();
log.log(
Logger.INFO,
myAgent.getLocalName()
+ "# received request for path("
+ destSrcPair.getFirst().getLocalName()
+ ", "
+ destSrcPair.getSecond().getLocalName()
+ ") from "
+ msg.getSender().getLocalName());
myAgent.addBehaviour(
new ConnSendRoute(
msg.getSender(), destSrcPair.getFirst(), destSrcPair.getSecond()));
} catch (UnreadableException e) {
log.log(Logger.SEVERE, "Read msg content Exception: ", e);
}
}
break;
case ACLMessage.INFORM:
log.log(
Logger.INFO,
myAgent.getLocalName()
+ "#"
+ msg.getSender().getLocalName()
+ " notified about failure");
if (msg.getProtocol().equals(Constants.INFORM_COFFEE)) {
AID aid = msg.getSender();
if (msg.getContent().equals("down")) myConnector.nodeStatusChange(aid, false);
else myConnector.nodeStatusChange(aid, true);
}
break;
case ACLMessage.CONFIRM:
log.log(
Logger.INFO,
myAgent.getLocalName() + "#" + msg.getSender().getLocalName() + " finished modeling");
if (msg.getProtocol().equals(Constants.CONFIRM_FINISHMODELING)) {
handleModMsg(msg);
}
break;
}
}
// Блокируем поведение, пока в очереди сообщений агента
// не появится хотя бы одно сообщение
block();
}
public final void action() {
ACLMessage msg = myAgent.receive(template);
if (msg != null) {
if (myLogger.isLoggable(Logger.FINER)) {
myLogger.log(
Logger.FINER, "Agent " + myAgent.getName() + " - Serving incoming message " + msg);
}
handleMessage(msg);
} else {
block();
}
}
/** Send a CONNECT_MEDIATOR packet to the BackEnd to check if it is reachable */
private boolean ping(int cnt) throws ICPException {
// Try first with the current transport address, then with the various backup addresses
for (int i = -1; i < backEndAddresses.length; i++) {
if (i >= 0) {
// Set the mediator address to a new address..
String addr = backEndAddresses[i];
int colonPos = addr.indexOf(':');
String host = addr.substring(0, colonPos);
String port = addr.substring(colonPos + 1, addr.length());
mediatorTA = new JICPAddress(host, port, myMediatorID, "");
}
try {
myLogger.log(
Logger.FINE,
"Ping " + mediatorTA.getHost() + ":" + mediatorTA.getPort() + "(" + cnt + ")...");
JICPPacket pkt =
new JICPPacket(JICPProtocol.CONNECT_MEDIATOR_TYPE, JICPProtocol.DEFAULT_INFO, null);
pkt = deliver(pkt);
if (pkt.getType() == JICPProtocol.ERROR_TYPE) {
// Communication OK, but there was a JICP error.
String errorMsg = new String(pkt.getData());
if (errorMsg.equals(JICPProtocol.NOT_FOUND_ERROR)) {
// Back-end not found: either the max disconnection time expired server side or there
// was a fault and restart
// --> Try to recreate the Back-end
myLogger.log(
Logger.WARNING,
"Communication OK, but Back-end no longer present. Try to recreate it");
if (myConnectionListener != null) {
myConnectionListener.handleConnectionEvent(ConnectionListener.BE_NOT_FOUND, null);
}
try {
createBackEnd();
} catch (IMTPException imtpe) {
myLogger.log(Logger.WARNING, "Error re-creating the Back-end.");
return false;
}
} else {
// Generic JICP error. No need to go on
throw new ICPException("JICP error. " + errorMsg);
}
}
return true;
} catch (IOException ioe) {
// Ignore it, and try the next address...
myLogger.log(Logger.FINE, "Ping KO", ioe);
}
}
// No address succeeded.
return false;
}
/** Make this NIOBEDispatcher terminate. */
public void shutdown() {
active = false;
if (myLogger.isLoggable(Logger.INFO)) {
myLogger.log(Logger.INFO, myID + ": shutting down");
}
// Deregister from the JICPServer
if (myID != null) {
myMediatorManager.deregisterMediator(myID);
}
inpManager.shutdown();
outManager.shutdown();
}
/**
* This is periodically called by the JICPMediatorManager and is used by this NIOMediator to
* evaluate the elapsed time without the need of a dedicated thread or timer.
*/
public final void tick(long currentTime) {
if (active && !connectionDropped) {
// 1) If there is a blocking read operation in place check the
// response timeout
inpManager.checkResponseTime(currentTime);
// 2) Evaluate the keep alive
if (keepAliveTime > 0) {
if ((currentTime - lastReceivedTime) > (keepAliveTime + RESPONSE_TIMEOUT)) {
// Missing keep-alive.
// The OUT connection is no longer valid
if (outManager.isConnected()) {
myLogger.log(Logger.WARNING, myID + ": Missing keep-alive");
outManager.resetConnection();
}
// Check the INP connection. Since this method must return
// asap, does it in a separated Thread
if (inpManager.isConnected()) {
Thread t =
new Thread() {
public void run() {
try {
// JICPPacket pkt = new JICPPacket(JICPProtocol.KEEP_ALIVE_TYPE,
// JICPProtocol.DEFAULT_INFO, null);
// inpManager.dispatch(pkt, false);
inpManager.sendServerKeepAlive();
if (myLogger.isLoggable(Logger.CONFIG)) {
myLogger.log(Logger.CONFIG, myID + ": IC valid");
}
} catch (Exception e) {
// Just do nothing: the INP connection has been reset
}
}
};
t.start();
}
}
}
// 3) Evaluate the max disconnection time
if (outManager.checkMaxDisconnectionTime(currentTime)) {
myLogger.log(Logger.SEVERE, myID + ": Max disconnection time expired.");
// Consider as if the FrontEnd has terminated spontaneously -->
// Kill the above container (this will also kill this NIOBEDispatcher).
kill();
}
}
}
private void initLogger() {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
String dateStr = formatter.format(new Date());
FileHandler fileHandler = null;
try {
fileHandler = new FileHandler("log/" + dateStr + "_" + getLocalName() + ".log", true);
fileHandler.setFormatter(new SimpleFormatter());
} catch (IOException | SecurityException ex) {
System.err.println(ex.toString());
}
logger = jade.util.Logger.getMyLogger(this.getClass().getName());
logger.addHandler(fileHandler);
logger.setLevel(Level.ALL);
logger.setUseParentHandlers(false); // zapis tylko do pliku, coby ekranu nie śmiecić
}
/**
* Overrides the Behaviour.action() method. This method is executed by the agent thread. It
* basically defines two sub behaviours, which are in charge of periodically updating the DF and
* receiving DF notifications.
*/
public void action() {
try {
// first thing to do is to register on the df and save current location if any
DFAgentDescription myDescription = new DFAgentDescription();
// fill a msn service description
ServiceDescription msnServiceDescription = new ServiceDescription();
msnServiceDescription.setName(MsnAgent.msnDescName);
msnServiceDescription.setType(MsnAgent.msnDescType);
myDescription.addServices(msnServiceDescription);
ContactManager.getInstance().resetModifications();
DFAgentDescription[] onlineContacts = DFService.search(myAgent, myDescription);
updateContactList(onlineContacts);
MsnEvent event = MsnEventMgr.getInstance().createEvent(MsnEvent.VIEW_REFRESH_EVENT);
Map<String, Contact> cMap = ContactManager.getInstance().getAllContacts();
Map<String, ContactLocation> cLocMap = ContactManager.getInstance().getAllContactLocations();
ContactListChanges changes = ContactManager.getInstance().getModifications();
myLogger.log(
Logger.FINE,
"Thread "
+ Thread.currentThread().getId()
+ "After reading local contacts and first df query: "
+ "Adding to VIEW_REFRESH_EVENT this list of changes: "
+ changes.toString());
event.addParam(MsnEvent.VIEW_REFRESH_PARAM_LISTOFCHANGES, changes);
event.addParam(MsnEvent.VIEW_REFRESH_CONTACTSMAP, cMap);
event.addParam(MsnEvent.VIEW_REFRESH_PARAM_LOCATIONMAP, cLocMap);
MsnEventMgr.getInstance().fireEvent(event);
DFUpdaterBehaviour updater =
new DFUpdaterBehaviour(myAgent, msnUpdateTime, myContactLocation);
MsnAgent agent = (MsnAgent) myAgent;
DFSubscriptionBehaviour subBh =
new DFSubscriptionBehaviour(myAgent, agent.getSubscriptionMessage());
myAgent.addBehaviour(updater);
myAgent.addBehaviour(subBh);
} catch (Exception e) {
// TODO Auto-generated catch block
myLogger.log(Logger.SEVERE, "Severe error: ", e);
e.printStackTrace();
}
}
// #APIDOC_EXCLUDE_BEGIN
public static void notifyFailureToSender(ACLMessage msg, String sender, String error) {
if (myFrontEnd != null) {
// Send back a failure message
try {
Iterator it = msg.getAllReceiver();
while (it.hasNext()) {
AID receiver = (AID) it.next();
// If this receiver is local, the message has certainly been delivered
// successfully --> Do not send any FAILURE back for this receiver
if (myFrontEnd.getLocalAgent(receiver.getLocalName()) == null) {
ACLMessage failure = msg.createReply();
failure.setPerformative(ACLMessage.FAILURE);
failure.setSender(myFrontEnd.getAMS());
failure.setLanguage(FIPANames.ContentLanguage.FIPA_SL);
String content = "( (action " + sender;
content = content + " (ACLMessage) ) (MTS-error " + receiver + " \"" + error + "\") )";
failure.setContent(content);
myFrontEnd.messageIn(failure, sender);
}
}
} catch (Exception e1) {
logger.log(Logger.SEVERE, "Error delivering FAILURE message.", e1);
}
}
}
/**
* An agent on the FrontEnd has sent a message. Note that the NotFoundException here is referred
* to the sender and indicates an inconsistency between the FrontEnd and the BackEnd
*/
public void messageOut(ACLMessage msg, String sender) throws NotFoundException, IMTPException {
// Check whether the sender exists
AID id = new AID(sender, AID.ISLOCALNAME);
synchronized (frontEndSynchLock) {
AgentImage image = getAgentImage(id);
if (image == null) {
if (synchronizing) {
// The image is not yet there since the front-end is synchronizing.
// Buffer the message. It will be delivered as soon as the
// FrontEnd synchronization process completes
postponeAfterFrontEndSynch(msg, sender);
return;
} else {
throw new NotFoundException("No image for agent " + sender + " on the BackEndContainer");
}
}
}
int size;
if (msg.hasByteSequenceContent()) {
size = msg.getByteSequenceContent().length;
} else {
size = msg.getContent() != null ? msg.getContent().length() : 0;
}
myLogger.log(
Logger.INFO,
getID()
+ " - Delivering OUT message "
+ ACLMessage.getPerformative(msg.getPerformative())
+ ", size="
+ size);
handleSend(msg, id, false);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(myReceiver);
logger.log(Level.INFO, "Destroy activity!");
}
@Override
protected void setup() {
this.capacityOfRooms = new HashMap<>();
this.roomsOfSubjects = new HashMap<>();
initLogger();
logger.log(Level.INFO, "DataBaseAgent run");
addBehaviour(new RoomsInitBehaviour(this, logger));
}
public void setTime(String theTime) {
time = theTime;
try {
this.theDate = dateFormat.parse(time);
} catch (Exception ex) {
jade.util.Logger.getMyLogger(this.getClass().getName())
.log(jade.util.Logger.WARNING, ex.getMessage());
}
}
private BackEndManager initBEManager() {
try {
return BackEndManager.getInstance(null);
} catch (Exception e) {
myLogger.log(Logger.WARNING, "Cannot retrieve BackEndManager. " + e);
e.printStackTrace();
}
return null;
}
private String checkString(String nameAgent) {
int index;
index = nameAgent.indexOf("@");
if (index != -1) return nameAgent.substring(0, index);
else {
Logger.getMyLogger(this.getClass().getName())
.log(Logger.WARNING, "The agent's name is not correct");
return null;
}
}
/**
* Dispatch a message to an agent in the FrontEnd. If this method is called by a thread that is
* serving a message sent by an agent in the FrontEnd too, nothing is done as the dispatch has
* already taken place in the FrontEnd (see messageOut()).
*/
public boolean postMessageToLocalAgent(ACLMessage msg, AID receiverID) {
// Try first in the LADT
boolean found = super.postMessageToLocalAgent(msg, receiverID);
if (found) {
return found;
} else {
// The receiver must be in the FrontEnd
AgentImage image = (AgentImage) agentImages.get(receiverID);
if (image != null) {
if (agentImages.containsKey(msg.getSender()) && isExplicitReceiver(msg, receiverID)) {
// The message was sent by an agent living in the FrontEnd. The
// receiverID (living in the FrontEnd too) has already received
// the message.
// The second part of the condition ensures that, if the
// message was not directly sent to the receiver (e.g. it was sent to a topic
// or an alias), message delivery occurs normally.
// FIXME: This does not take into account that an agent not living
// in the FrontEnd may send a message on behalf of an agent living
// in the FrontEnd.
return true;
}
try {
// Forward the message to the FrontEnd
int size;
if (msg.hasByteSequenceContent()) {
size = msg.getByteSequenceContent().length;
} else {
size = msg.getContent() != null ? msg.getContent().length() : 0;
}
myLogger.log(
Logger.INFO,
getID()
+ " - Delivering IN message "
+ ACLMessage.getPerformative(msg.getPerformative())
+ ", size="
+ size);
myFrontEnd.messageIn(msg, receiverID.getLocalName());
handlePosted(receiverID, msg);
return true;
} catch (NotFoundException nfe) {
System.out.println("WARNING: Missing agent in FrontEnd");
return false;
} catch (IMTPException imtpe) {
System.out.println("WARNING: Can't deliver message to FrontEnd");
return false;
}
} else {
// Agent not found
System.out.println("WARNING: Agent " + receiverID + " not found on BackEnd container");
return false;
}
}
}
/**
* Notify this NIOMediator that an error occurred on one of the Connections it was using. This
* information is important since, unlike normal mediators, a NIOMediator typically does not read
* packets from connections on its own (the JICPMediatorManager does that in general).
*/
public void handleConnectionError(Connection c, Exception e) {
myLogger.log(Level.WARNING, "connection error", e);
if (active && peerActive) {
// Try assuming it is the input connection
try {
inpManager.checkConnection(c);
myLogger.log(Logger.WARNING, myID + ": IC Disconnection detected");
inpManager.resetConnection();
} catch (ICPException icpe) {
// Then try assuming it is the output connection
try {
outManager.checkConnection(c);
myLogger.log(Logger.WARNING, myID + ": OC Disconnection detected");
outManager.resetConnection();
} catch (ICPException icpe2) {
// Ignore it
}
}
}
}
private void killAgentImages() {
AID[] ids = getAgentImages();
for (int i = 0; i < ids.length; ++i) {
handleEnd(ids[i]);
}
if (agentImages.size() > 0) {
myLogger.log(Logger.WARNING, "# " + agentImages.size() + " zombie agent images found.");
agentImages.clear();
}
}
protected final BackEndSkel startBackEndContainer(Properties props) throws ICPException {
try {
String nodeName = myID.replace(':', '_');
props.setProperty(Profile.CONTAINER_NAME, nodeName);
myContainer = new BackEndContainer(props, this);
if (!myContainer.connect()) {
throw new ICPException("BackEnd container failed to join the platform");
}
// Possibly the node name was re-assigned by the main
myID = myContainer.here().getName();
if (myLogger.isLoggable(Logger.CONFIG)) {
myLogger.log(
Logger.CONFIG, "BackEndContainer " + myID + " successfully joined the platform");
}
return new BackEndSkel(myContainer);
} catch (ProfileException pe) {
// should never happen
pe.printStackTrace();
throw new ICPException("Error creating profile");
}
}
/**
* Dispatch a serialized command to the BackEnd and get back a serialized response. Mutual
* exclusion with itself to preserve dispatching order
*/
public synchronized byte[] dispatch(byte[] payload, boolean flush) throws ICPException {
// Note that we don't even try to dispatch packets while the
// device is not reachable to preserve dispatching order.
// If dispatching succeeded in fact this command would overcome
// any postponed command waiting to be flushed.
if (myDisconnectionManager.isReachable()) {
// The following check preserves dispatching order when the
// device has just reconnected but flushing has not started yet
if (waitingForFlush && !flush) {
throw new ICPException("Upsetting dispatching order");
}
waitingForFlush = false;
int sid = outCnt;
outCnt = (outCnt + 1) & 0x0f;
myLogger.log(Logger.FINE, "Issuing outgoing command " + sid);
try {
JICPPacket pkt =
new JICPPacket(JICPProtocol.COMMAND_TYPE, JICPProtocol.DEFAULT_INFO, payload);
pkt.setSessionID((byte) sid);
pkt = deliver(pkt);
myLogger.log(Logger.FINE, "Response received " + pkt.getSessionID());
if (pkt.getType() == JICPProtocol.ERROR_TYPE) {
// Communication OK, but there was a JICP error on the peer
throw new ICPException(new String(pkt.getData()));
}
return pkt.getData();
} catch (IOException ioe) {
// Can't reach the BackEnd. Assume we are unreachable
myLogger.log(Logger.WARNING, "IOException on output connection", ioe);
myDisconnectionManager.setUnreachable(false);
throw new ICPException("Dispatching error.", ioe);
}
} else {
throw new ICPException("Unreachable");
}
}
// generates and sends messages
@Override
void generate() {
if (rand.nextDouble() < sprob) {
try {
int i = rand.nextInt(myUser.getReceivers().size());
ACLMessage msgL3 = new ACLMessage(ACLMessage.INFORM);
msgL3.setContentObject(new Integer(1));
msgL3.addReceiver(myUser.getReceivers().get(i));
msgL3.setSender(myUser.getAID());
ACLMessage msgL2 = new ACLMessage(ACLMessage.INFORM);
msgL2.setContentObject(msgL3);
msgL2.setConversationId(Constants.NULL_CID);
msgL2.addReceiver(myUser.getGateway());
msgL2.setProtocol(Constants.INFORM_MESSAGE);
log.log(
Logger.INFO,
myUser.getLocalName()
+ "# sended message to "
+ myUser.getReceivers().get(i).getLocalName());
myUser.send(msgL2);
} catch (IOException e) {
log.log(Logger.SEVERE, "problems with output stream exception: ", e);
} catch (IllegalArgumentException e) {
log.log(
Logger.WARNING,
"User "
+ myUser.getLocalName()
+ " must have at least one destination user to generate traffic",
e);
block();
} catch (Exception e) {
log.log(Logger.SEVERE, "Exception", e);
}
}
}
/**
* Passes to this JICPMediator the connection opened by the mediated entity. This is called by the
* JICPMediatorManager this Mediator is attached to as soon as the mediated entity (re)connects.
*
* @param c the connection to the mediated entity
* @param pkt the packet that was sent by the mediated entity when opening this connection
* @param addr the address of the mediated entity
* @param port the local port used by the mediated entity
* @return an indication to the JICPMediatorManager to keep the connection open.
*/
public boolean handleIncomingConnection(
Connection c, JICPPacket pkt, InetAddress addr, int port) {
checkTerminatedInfo(pkt);
if (peerActive) {
if (connectionDropped) {
droppedToDisconnected();
}
// Update keep-alive info
lastReceivedTime = System.currentTimeMillis();
boolean inp = false;
byte[] data = pkt.getData();
if (data.length == 1) {
inp = (data[0] == 1);
}
if (inp) {
inpManager.setConnection((NIOJICPConnection) c);
if (myLogger.isLoggable(Logger.CONFIG)) {
myLogger.log(Logger.CONFIG, myID + ": New INP Connection establishd");
}
} else {
outManager.setConnection(c);
if (myLogger.isLoggable(Logger.CONFIG)) {
myLogger.log(Logger.CONFIG, myID + ": New OUT Connection establishd");
}
}
return true;
} else {
// The remote FrontEnd has terminated spontaneously -->
// Kill the above container (this will also kill this NIOBEDispatcher).
kill();
return false;
}
}
/** Initialization */
protected void setup() {
// INitialize the logger
logger = jade.util.Logger.getMyLogger(this.getClass().getName());
logger.setLevel(Logger.SEVERE);
logger.info("Student agent started: " + getLocalName());
// studentNumber = (String)(String)getArguments()[0];
/** Register the agent to the directory facilitator */
DFAgentDescription dfd = new DFAgentDescription();
dfd.setName(getAID());
ServiceDescription sd = new ServiceDescription();
sd.setType(getLocalName());
sd.setName("Student Agent");
dfd.addServices(sd);
try {
DFService.register(this, dfd);
} catch (FIPAException fe) {
fe.printStackTrace();
}
// Add main student agent behaviour
addBehaviour(new StudentAgentBehaviour());
}
/**
* Make this HTTPFEDispatcher terminate. Note that when the BackEnd receives the termination
* notification (explicitly sent in case of a self-initiated shutdown or attached to the response
* to the EXIT command), it closes the input connection. The InputManager gets an exception and,
* since it has been killed, terminates.
*/
public void shutdown() {
terminator = Thread.currentThread();
myLogger.log(
Logger.INFO,
"Dispatcher shutting down. Self-initiated = " + (terminator != myInputManager));
if (terminator != myInputManager) {
// Self-initiated shut down
// If connected, explicitly notify the BackEnd.
if (myDisconnectionManager.isReachable()) {
JICPPacket pkt =
new JICPPacket(JICPProtocol.COMMAND_TYPE, (byte) (JICPProtocol.DEFAULT_INFO), null);
myLogger.log(Logger.INFO, "Pushing termination notification");
try {
deliver(pkt);
} catch (IOException ioe) {
// When the BackEnd receives the termination notification,
// it just closes the connection --> we always have this exception
myLogger.log(Logger.FINE, "BackEnd closed");
}
}
// Kill the InputManager
myInputManager.kill();
}
}
public List removePendingMessages(MessageTemplate template, boolean notifyFailure) {
List pendingMsg = ((jade.imtp.leap.FrontEndStub) myFrontEnd).removePendingMessages(template);
if (pendingMsg.size() > 0) {
myLogger.log(
Logger.INFO, "Removed " + pendingMsg.size() + " pending messages from BackEnd queue.");
}
if (notifyFailure) {
Iterator it = pendingMsg.iterator();
while (it.hasNext()) {
try {
Object[] removed = (Object[]) it.next();
ACLMessage msg = (ACLMessage) removed[0];
AID receiver = new AID((String) removed[1], AID.ISLOCALNAME);
ServiceFinder myFinder = getServiceFinder();
MessagingService msgSvc = (MessagingService) myFinder.findService(MessagingSlice.NAME);
msgSvc.notifyFailureToSender(
new GenericMessage(msg), receiver, new InternalError("Agent dead"));
} catch (Exception e) {
myLogger.log(Logger.WARNING, "Cannot send AMS FAILURE. " + e);
}
}
}
return pendingMsg;
}
protected void handleNotUnderstood(ContentException ce, ACLMessage msg) {
myLogger.log(
Logger.WARNING,
"Agent "
+ myAgent.getName()
+ " - Error decoding "
+ ACLMessage.getPerformative(msg.getPerformative())
+ " message. Sender is "
+ msg.getSender().getName(),
ce);
if (performativesRequiringReply.contains(msg.getPerformative())) {
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.NOT_UNDERSTOOD);
myAgent.send(reply);
}
}
