void replyNotUnderstood(ACLMessage msg) {
// -----------------------------------------
try {
ContentElement content = getContentManager().extractContent(msg);
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.NOT_UNDERSTOOD);
getContentManager().fillContent(reply, content);
send(reply);
System.out.println("Not understood!");
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void action() {
try {
ContentElement content = getContentManager().extractContent(query);
Information info = (Information) ((Action) content).getAction();
Object obj = processInformation(info);
if (obj == null) replyNotUnderstood(query);
else {
ACLMessage reply = query.createReply();
reply.setPerformative(ACLMessage.INFORM);
Result result = new Result((Action) content, obj);
getContentManager().fillContent(reply, result);
send(reply);
System.out.println("Information processed.");
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void action() {
try {
ContentElement content = getContentManager().extractContent(request);
CreateAccount ca = (CreateAccount) ((Action) content).getAction();
Account acc = new Account();
String id = generateId();
acc.setId(id);
acc.setName(ca.getName());
Result result = new Result((Action) content, acc);
ACLMessage reply = request.createReply();
reply.setPerformative(ACLMessage.INFORM);
getContentManager().fillContent(reply, result);
send(reply);
accounts.put(id, acc);
operations.put(id, new ArrayList());
System.out.println("Account [" + acc.getName() + " # " + acc.getId() + "] created!");
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void action() {
ACLMessage msg = receive();
if (msg == null) {
block();
return;
}
try {
ContentElement content = getContentManager().extractContent(msg);
Concept action = ((Action) content).getAction();
switch (msg.getPerformative()) {
case (ACLMessage.REQUEST):
System.out.println("Request from " + msg.getSender().getLocalName());
if (action instanceof CreateAccount)
addBehaviour(new HandleCreateAccount(myAgent, msg));
else if (action instanceof MakeOperation)
addBehaviour(new HandleOperation(myAgent, msg));
else replyNotUnderstood(msg);
break;
case (ACLMessage.QUERY_REF):
System.out.println("Query from " + msg.getSender().getLocalName());
if (action instanceof Information) addBehaviour(new HandleInformation(myAgent, msg));
else replyNotUnderstood(msg);
break;
default:
replyNotUnderstood(msg);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* Prints a hello message and creates a sequential behavior.
*
* <p>First sub-behavior is a finite state machine, which tries to get tour information. It
* contacts tour guide agent to get the tour guide. In case of failure, machine ends. If a
* response is received, it contacts curator agent to get tour details.
*
* <p>Second sub-behavior prints goodbye message.
*/
protected void setup() {
/*
* Hello message.
*/
System.out.println(this.getAID().getLocalName() + ": begin operation");
/*
* Request sent to the tour guide. It uses TourGuideInitiator class to
* make communication easier.
*/
ACLMessage initTourRequest = new ACLMessage(ACLMessage.REQUEST);
initTourRequest.setProtocol(FIPANames.InteractionProtocol.FIPA_REQUEST);
initTourRequest.setContent("request-tour-guide");
/*
* The Profiler looks for the registered Tour Guides.
*/
DFAgentDescription template = new DFAgentDescription();
ServiceDescription sd = new ServiceDescription();
sd.setType("tour-guide");
template.addServices(sd);
try {
DFAgentDescription[] result = DFService.search(this, template);
for (int i = 0; i < result.length; ++i) {
initTourRequest.addReceiver(result[i].getName());
}
} catch (FIPAException fe) {
fe.printStackTrace();
}
TourGuideInitiator initGuide = new TourGuideInitiator(this, initTourRequest);
/*
* Same as above, but with curator agent.
*/
ACLMessage detailTourRequest = new ACLMessage(ACLMessage.REQUEST);
detailTourRequest.setProtocol(FIPANames.InteractionProtocol.FIPA_REQUEST);
detailTourRequest.setContent("request-tour-details");
/*
* The Profiler looks for the registered curators.
*/
template = new DFAgentDescription();
sd = new ServiceDescription();
sd.setType("curator");
template.addServices(sd);
try {
DFAgentDescription[] result = DFService.search(this, template);
for (int i = 0; i < result.length; ++i) {
detailTourRequest.addReceiver(result[i].getName());
}
} catch (FIPAException fe) {
fe.printStackTrace();
}
CuratorInitiator initCurator = new CuratorInitiator(this, detailTourRequest);
/*
* State machine consists of two states:
* 1. Communication with tour guide agent
* 2. Communication with curator agent
* 3. Final state
*
* It is constructed below.
*/
OneShotBehaviour lastState =
new OneShotBehaviour(this) {
public void action() {}
};
FSMBehaviour fsm = new FSMBehaviour(this);
fsm.registerFirstState(initGuide, STATE_GET_GUIDE);
fsm.registerState(initCurator, STATE_GET_DETAILS);
fsm.registerLastState(lastState, STATE_LAST);
fsm.registerTransition(STATE_GET_GUIDE, STATE_GET_DETAILS, 0);
fsm.registerTransition(STATE_GET_GUIDE, STATE_LAST, 1);
fsm.registerDefaultTransition(STATE_GET_DETAILS, STATE_LAST);
/*
* Sequential behavior is constructed and added as default agent
* behavior.
*/
SequentialBehaviour seqBeh = new SequentialBehaviour(this);
seqBeh.addSubBehaviour(fsm);
seqBeh.addSubBehaviour(
new OneShotBehaviour(this) {
public void action() {
System.out.println(myAgent.getAID().getLocalName() + ": closing");
}
public int onEnd() {
myAgent.doDelete();
return super.onEnd();
}
});
addBehaviour(seqBeh);
}
protected void handleFailure(ACLMessage failure) {
String text = failure.getContent();
System.out.println(myAgent.getAID().getLocalName() + ": Curator failure (" + text + ")");
exitCode = 1;
}
protected void handleInform(ACLMessage inform) {
String text = inform.getContent();
System.out.println(
myAgent.getAID().getLocalName() + ": response from Curator (" + text + ")");
exitCode = 0;
}
