/**
* 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 synchronized void registerAgent(DFAgentDescription dfad) throws Exception {
log.info("Start wsigs's registration from agent: " + dfad.getName());
// Loop all services of agent
ServiceDescription sd;
WSIGService wsigService;
AID agentId = dfad.getName();
Iterator it = dfad.getAllServices();
while (it.hasNext()) {
sd = (ServiceDescription) it.next();
// Create wsdl & wsig service
wsigService = createWSIGService(agentId, sd);
// Register new service
registerService(wsigService);
}
log.info("End wsigs's registration from agent: " + dfad.getName());
}
/**
* Overrides SubscriptionInitiator.handleInform(), defining what to do each time the DF is
* modified by a contact Basically it adds/removes/updates contacts from ContactList according
* to what has happened to DF. It also fires events on the GUI any time a view refresh is
* needed.
*
* @param inform the message from DF containing a list of changes
*/
protected void handleInform(ACLMessage inform) {
myLogger.log(
Logger.FINE,
"Thread " + Thread.currentThread().getId() + ": Notification received from DF");
ContactManager.getInstance().resetModifications();
try {
DFAgentDescription[] results = DFService.decodeNotification(inform.getContent());
if (results.length > 0) {
for (int i = 0; i < results.length; ++i) {
DFAgentDescription dfd = results[i];
AID contactAID = dfd.getName();
// Do something only if the notification deals with an agent different from the current
// one
if (!contactAID.equals(myAgent.getAID())) {
myLogger.log(
Logger.INFO,
"Thread "
+ Thread.currentThread().getId()
+ ":df says that agent "
+ myAgent.getAID().getLocalName()
+ " updates or registers");
Iterator serviceIter = dfd.getAllServices();
// Registered or updated
if (serviceIter.hasNext()) {
ServiceDescription serviceDesc = (ServiceDescription) serviceIter.next();
Iterator propertyIt = serviceDesc.getAllProperties();
Location loc = Helper.extractLocation(propertyIt);
String phoneNum = contactAID.getLocalName();
ContactManager.getInstance().addOrUpdateOnlineContact(phoneNum, loc);
} else {
myLogger.log(
Logger.INFO,
"Thread "
+ Thread.currentThread().getId()
+ ":df says that agent "
+ myAgent.getAID().getLocalName()
+ " deregisters");
String phoneNumber = contactAID.getLocalName();
Contact c = ContactManager.getInstance().getContact(phoneNumber);
ContactManager.getInstance().setContactOffline(phoneNumber);
MsnEvent event =
MsnEventMgr.getInstance().createEvent(MsnEvent.CONTACT_DISCONNECT_EVENT);
event.addParam(MsnEvent.CONTACT_DISCONNECT_PARAM_CONTACTNAME, c.getName());
MsnEventMgr.getInstance().fireEvent(event);
}
MsnEvent event = MsnEventMgr.getInstance().createEvent(MsnEvent.VIEW_REFRESH_EVENT);
ContactListChanges changes = ContactManager.getInstance().getModifications();
Map<String, Contact> cMap = ContactManager.getInstance().getAllContacts();
Map<String, ContactLocation> cLocMap =
ContactManager.getInstance().getAllContactLocations();
myLogger.log(
Logger.FINE,
"Thread "
+ Thread.currentThread().getId()
+ ":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);
}
}
}
} catch (Exception e) {
myLogger.log(Logger.WARNING, "See printstack for Exception.", e);
e.printStackTrace();
}
}