/**
* 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);
}
}
/**
* 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();
}
}
