public List removePendingMessages(MessageTemplate template) {
synchronized (pendingCommands) {
List messages = new ArrayList();
List commands = new ArrayList();
Enumeration e = pendingCommands.elements();
while (e.hasMoreElements()) {
PostponedCommand pc = (PostponedCommand) e.nextElement();
Command c = pc.getCommand();
if (c.getCode() == FrontEndSkel.MESSAGE_IN) {
ACLMessage msg = (ACLMessage) c.getParamAt(0);
if (template.match(msg)) {
Object[] oo = new Object[] {msg, c.getParamAt(1)};
messages.add(oo);
commands.add(c);
}
}
}
// Remove all the commands carrying matching messages
Iterator it = commands.iterator();
while (it.hasNext()) {
pendingCommands.remove(it.next());
}
// Return the list of matching messages
return messages;
}
}
// #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);
}
}
}
/**
* create a new ACLMessage that is a reply to this message. In particular, it sets the following
* parameters of the new message: receiver, language, ontology, protocol, conversation-id,
* in-reply-to, reply-with. The programmer needs to set the communicative-act and the content. Of
* course, if he wishes to do that, he can reset any of the fields.
*
* @return the ACLMessage to send as a reply
*/
public ACLMessage createReply() {
ACLMessage m = new ACLMessage(getPerformative());
Iterator it = getAllReplyTo();
while (it.hasNext()) m.addReceiver((AID) it.next());
if ((reply_to == null) || reply_to.isEmpty()) m.addReceiver(getSender());
m.setLanguage(getLanguage());
m.setOntology(getOntology());
m.setProtocol(getProtocol());
m.setInReplyTo(getReplyWith());
if (source != null) m.setReplyWith(source.getName() + java.lang.System.currentTimeMillis());
else m.setReplyWith("X" + java.lang.System.currentTimeMillis());
m.setConversationId(getConversationId());
// Copy only well defined user-def-params
String trace = getUserDefinedParameter(TRACE);
if (trace != null) {
m.addUserDefinedParameter(TRACE, trace);
}
// #CUSTOM_EXCLUDE_BEGIN
// Set the Aclrepresentation of the reply message to the aclrepresentation of the sent message
if (messageEnvelope != null) {
m.setDefaultEnvelope();
String aclCodec = messageEnvelope.getAclRepresentation();
if (aclCodec != null) m.getEnvelope().setAclRepresentation(aclCodec);
} else m.setEnvelope(null);
// #CUSTOM_EXCLUDE_END
return m;
}
/**
* Translates <code>Map</code> object from <i>Messaging<i> ontology into Java <code>Map</code>
* form.
*
* @param inMap is Map object from the ontology
* @return Java Map form of <code>inMap</code>
*/
public static Map<String, String> getMap(ibspan.tss.messaging.ontology.Map inMap) {
HashMap<String, String> outMap = new HashMap<String, String>();
for (Iterator it = inMap.getAllHasEntry(); it.hasNext(); ) {
MapEntry entry = (MapEntry) it.next();
outMap.put(entry.getKey(), entry.getValue());
}
return outMap;
}
private boolean isExplicitReceiver(ACLMessage msg, AID receiver) {
Iterator it = msg.getAllIntendedReceiver();
while (it.hasNext()) {
if (receiver.equals(it.next())) {
return true;
}
}
return false;
}
//////////////////////////
// Private utility methods
//////////////////////////
private String[] getParticipantNames() {
String[] pp = new String[participants.size()];
Iterator it = participants.iterator();
int i = 0;
while (it.hasNext()) {
AID id = (AID) it.next();
pp[i++] = id.getLocalName();
}
return pp;
}
/** returns the results of an action requested. */
public List getResult() throws FIPAException, NotYetReady {
if (notYetReady) throw new NotYetReady();
if (lastMsg.getPerformative() != ACLMessage.INFORM) throw new FIPAException(lastMsg);
Result r = AppletRequestProto.extractContent(lastMsg.getContent(), (SLCodec) c, o);
Iterator i = r.getItems().iterator(); // this is the set of DFAgentDescription
List l = new ArrayList();
while (i.hasNext()) l.add(i.next());
return l;
}
public void action() {
spokenMsg.clearAllReceiver();
Iterator it = participants.iterator();
while (it.hasNext()) {
spokenMsg.addReceiver((AID) it.next());
}
spokenMsg.setContent(sentence);
myGui.notifySpoken(myAgent.getLocalName(), sentence);
send(spokenMsg);
}
protected void resetChildren() {
Collection c = getChildren();
if (c != null) {
Iterator it = c.iterator();
while (it.hasNext()) {
Behaviour b = (Behaviour) it.next();
b.reset();
}
}
}
public weka.core.Instances toWekaInstances() {
// attributes
FastVector wattrs = new FastVector();
Iterator itr = attributes.iterator();
while (itr.hasNext()) {
Attribute attr = (Attribute) itr.next();
wattrs.addElement(attr.toWekaAttribute());
}
// data instances
weka.core.Instances winsts = new weka.core.Instances(name, wattrs, instances.size());
itr = instances.iterator();
while (itr.hasNext()) {
Instance inst = (Instance) itr.next();
Iterator itrval = inst.getValues().iterator();
Iterator itrmis = inst.getMissing().iterator();
double[] vals = new double[wattrs.size()];
for (int i = 0; i < wattrs.size(); i++) {
double val = (Double) itrval.next();
if ((Boolean) itrmis.next()) {
vals[i] = weka.core.Instance.missingValue();
} else {
vals[i] = val;
}
}
weka.core.Instance winst = new weka.core.Instance(1, vals);
winst.setDataset(winsts);
winsts.add(winst);
}
winsts.setClassIndex(this.class_index);
return winsts;
}
/**
* Associates this behaviour with the agent it belongs to. Overrides the method in the base class
* to propagate the setting to all children.
*
* @param a The agent this behaviour belongs to.
* @see Behaviour#setAgent(Agent a)
*/
public void setAgent(Agent a) {
Collection c = getChildren();
if (c != null) {
Iterator it = c.iterator();
while (it.hasNext()) {
Behaviour b = (Behaviour) it.next();
b.setAgent(a);
}
}
super.setAgent(a);
}
/*
* returns all instances as a multi-line string
*/
@Override
public String toString() {
if (instances == null) {
return "";
}
StringBuffer text = new StringBuffer();
Iterator institr = instances.iterator();
while (institr.hasNext()) {
Instance inst = (Instance) institr.next();
text.append(inst.toString(this));
text.append('\n');
}
return text.toString();
}
/**
* Writes the message envelope for this message, using the <code>:sender</code> and <code>
* :receiver</code> message slots to fill in the envelope.
*
* @see jade.lang.acl#setEnvelope(Envelope e)
* @see jade.lang.acl#getEnvelope()
*/
public void setDefaultEnvelope() {
messageEnvelope = new Envelope();
messageEnvelope.setFrom(source);
// #MIDP_EXCLUDE_BEGIN
Iterator it = dests.iterator();
// #MIDP_EXCLUDE_END
/*#MIDP_INCLUDE_BEGIN
Iterator it = new EnumIterator(dests.elements());
#MIDP_INCLUDE_END*/
while (it.hasNext()) messageEnvelope.addTo((AID) it.next());
// #MIDP_EXCLUDE_BEGIN
messageEnvelope.setAclRepresentation(StringACLCodec.NAME);
// #MIDP_EXCLUDE_END
messageEnvelope.setDate(new Date());
}
private void notifySynchronized() {
synchronized (frontEndSynchLock) {
Iterator it = fronEndSynchBuffer.iterator();
while (it.hasNext()) {
try {
MessageSenderPair msp = (MessageSenderPair) it.next();
messageOut(msp.getMessage(), msp.getSender());
} catch (NotFoundException nfe) {
// The sender does not exist --> nothing to notify
nfe.printStackTrace();
} catch (IMTPException imtpe) {
// Should never happen since this is a local call
imtpe.printStackTrace();
}
}
fronEndSynchBuffer.clear();
synchronizing = false;
}
}
/**
* retrieve the whole list of intended receivers for this message.
*
* @return An Iterator over all the intended receivers of this message taking into account the
* Envelope ":intended-receiver" first, the Envelope ":to" second and the message ":receiver"
* last.
*/
public Iterator getAllIntendedReceiver() {
Iterator it = null;
// #CUSTOM_EXCLUDE_BEGIN
Envelope env = getEnvelope();
if (env != null) {
it = env.getAllIntendedReceiver();
if (!it.hasNext()) {
// The ":intended-receiver" field is empty --> try with the ":to" field
it = env.getAllTo();
}
}
// #CUSTOM_EXCLUDE_END
if (it == null || !it.hasNext()) {
// Both the ":intended-receiver" and the ":to" fields are empty -->
// Use the ACLMessage receivers
it = getAllReceiver();
}
return it;
}
/**
* Utility method that updates the contact list extracting contact info and location from DF
* descriptions.
*
* @param onlineContactsDescs array of {@link DFAgentDescription} objects that define services as
* results of a DF query
*/
private void updateContactList(DFAgentDescription[] onlineContactsDescs) {
for (int i = 0; i < onlineContactsDescs.length; i++) {
Iterator serviceDescIt = onlineContactsDescs[i].getAllServices();
if (serviceDescIt.hasNext()) {
ServiceDescription desc = (ServiceDescription) serviceDescIt.next();
Iterator propertyIt = desc.getAllProperties();
Location loc = Helper.extractLocation(propertyIt);
AID cId = onlineContactsDescs[i].getName();
if (!cId.equals(myAgent.getAID())) {
// Create an online contact (or update it)
String phoneNumber = cId.getLocalName();
ContactManager.getInstance().addOrUpdateOnlineContact(phoneNumber, loc);
}
}
}
}
private Location parseAMSResponse(ACLMessage response) {
Result results = null;
try {
results = (Result) getContentManager().extractContent(response);
} catch (UngroundedException e) {
e.printStackTrace();
} catch (CodecException e) {
e.printStackTrace();
} catch (OntologyException e) {
e.printStackTrace();
}
Iterator it = results.getItems().iterator();
Location loc = null;
if (it.hasNext()) loc = (Location) it.next();
return loc;
}
/**
* Extract a Location from a list of properties from a Service description
*
* @param it iterator over the list of properties
* @return the location on the map described by this set of properties
*/
public static Location extractLocation(Iterator it) {
Location loc = new Location("mygps");
while (it.hasNext()) {
Property p = (Property) it.next();
String propertyName = p.getName();
if (propertyName.equals(DFUpdaterBehaviour.PROPERTY_NAME_LOCATION_ALT)) {
double altitude = Double.parseDouble((String) p.getValue());
loc.setAltitude(altitude);
} else if (propertyName.equals(DFUpdaterBehaviour.PROPERTY_NAME_LOCATION_LAT)) {
double latitude = Double.parseDouble((String) p.getValue());
loc.setLatitude(latitude);
} else if (propertyName.equals(DFUpdaterBehaviour.PROPERTY_NAME_LOCATION_LONG)) {
double longitude = Double.parseDouble((String) p.getValue());
loc.setLongitude(longitude);
}
}
return loc;
}
@Override
protected DataInstances getPredictions(Instances test, DataInstances onto_test) {
Evaluation eval = test();
double pre[] = new double[test.numInstances()];
for (int i = 0; i < test.numInstances(); i++) {
try {
pre[i] = eval.evaluateModelOnce((Classifier) getModelObject(), test.instance(i));
} catch (Exception e) {
pre[i] = Integer.MAX_VALUE;
}
}
// copy results to the DataInstancs
int i = 0;
Iterator itr = onto_test.getInstances().iterator();
while (itr.hasNext()) {
Instance next_instance = (Instance) itr.next();
next_instance.setPrediction(pre[i]);
i++;
}
return onto_test;
}
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;
}
public void action() {
// Receives information about people joining and leaving
// the chat from the ChatManager agent
ACLMessage msg = myAgent.receive(template);
if (msg != null) {
if (msg.getPerformative() == ACLMessage.INFORM) {
try {
AbsPredicate p = (AbsPredicate) myAgent.getContentManager().extractAbsContent(msg);
if (p.getTypeName().equals(ChatOntology.JOINED)) {
// Get new participants, add them to the list of participants
// and notify the gui
AbsAggregate agg = (AbsAggregate) p.getAbsTerm(ChatOntology.JOINED_WHO);
if (agg != null) {
Iterator it = agg.iterator();
while (it.hasNext()) {
AbsConcept c = (AbsConcept) it.next();
participants.add(BasicOntology.getInstance().toObject(c));
}
}
myGui.notifyParticipantsChanged(getParticipantNames());
}
if (p.getTypeName().equals(ChatOntology.LEFT)) {
// Get old participants, remove them from the list of participants
// and notify the gui
AbsAggregate agg = (AbsAggregate) p.getAbsTerm(ChatOntology.JOINED_WHO);
if (agg != null) {
Iterator it = agg.iterator();
while (it.hasNext()) {
AbsConcept c = (AbsConcept) it.next();
participants.remove(BasicOntology.getInstance().toObject(c));
}
}
myGui.notifyParticipantsChanged(getParticipantNames());
}
} catch (Exception e) {
Logger.println(e.toString());
e.printStackTrace();
}
} else {
handleUnexpected(msg);
}
} else {
block();
}
}
// #MIDP_EXCLUDE_BEGIN
public synchronized Object clone() {
ACLMessage result;
try {
result = (ACLMessage) super.clone();
result.persistentID = null;
if (source != null) {
result.source = (AID) source.clone();
}
// Deep clone receivers
if (dests != null) {
result.dests = new ArrayList(dests.size());
Iterator it = dests.iterator();
while (it.hasNext()) {
AID id = (AID) it.next();
result.dests.add(id.clone());
}
}
// Deep clone reply_to
if (reply_to != null) {
result.reply_to = new ArrayList(reply_to.size());
Iterator it = reply_to.iterator();
while (it.hasNext()) {
AID id = (AID) it.next();
result.reply_to.add(id.clone());
}
}
// Deep clone user-def-properties if present
if (userDefProps != null) result.userDefProps = (Properties) userDefProps.clone();
// Deep clone envelope if present
if (messageEnvelope != null) result.messageEnvelope = (Envelope) messageEnvelope.clone();
} catch (CloneNotSupportedException cnse) {
throw new InternalError(); // This should never happen
}
return result;
}
@Override
protected Agent chooseBestAgent(Data data) {
Metadata metadata = data.getMetadata();
GetAllMetadata gm = new GetAllMetadata();
gm.setResults_required(true);
// 1. choose the nearest training data
List allMetadata = DataManagerService.getAllMetadata(this, gm);
// set the min, max instances and attributes first
Iterator itr = allMetadata.iterator();
while (itr.hasNext()) {
Metadata next_md = (Metadata) itr.next();
int na = next_md.getNumber_of_attributes();
minAttributes = Math.min(minAttributes, na);
maxAttributes = Math.max(maxAttributes, na);
int ni = next_md.getNumber_of_instances();
minInstances = Math.min(ni, minInstances);
maxInstances = Math.max(ni, maxInstances);
}
ArrayList<MetadataDistancePair> distances = new ArrayList<MetadataDistancePair>();
itr = allMetadata.iterator();
while (itr.hasNext()) {
Metadata next_md = (Metadata) itr.next();
double dNew = distance(metadata, next_md);
distances.add(new MetadataDistancePair(next_md, dNew));
}
Collections.sort(distances);
List agents = new LinkedList();
for (int i = 0; i < M; i++) {
log(distances.get(i).m.getExternal_name() + ": " + distances.get(i).d);
List ag = DataManagerService.getTheBestAgents(this, distances.get(i).m.getInternal_name(), N);
Iterator it = ag.iterator();
while (it.hasNext()) {
agents.add(it.next());
}
}
HashMap<String, Integer> counts = new HashMap<String, Integer>();
Iterator it = agents.iterator();
while (it.hasNext()) {
Agent a = (Agent) it.next();
if (counts.containsKey(a.getType())) {
counts.put(a.getType(), counts.get(a.getType()) + 1);
} else {
counts.put(a.getType(), 1);
}
}
int maxCount = 0;
String bestAgentType = null;
for (String s : counts.keySet()) {
log(s + ": " + counts.get(s));
if (counts.get(s) > maxCount) {
maxCount = counts.get(s);
bestAgentType = s;
}
}
log("Best agent: " + bestAgentType);
ArrayList<Agent> bestAgentOptions = new ArrayList<Agent>();
it = agents.iterator();
while (it.hasNext()) {
Agent a = (Agent) it.next();
if (a.getType().equals(bestAgentType)) {
bestAgentOptions.add(a);
}
}
List optionSamples = getAgentOptions(bestAgentType);
List options = new LinkedList();
it = optionSamples.iterator();
while (it.hasNext()) {
Option o = (Option) it.next();
Option newOpt = o.copyOption();
// ignore boolean and set options for now, set their value to the one of the best agent on
// closest file
if (o.getData_type().equals("BOOLEAN") || o.getData_type().equals("MIXED")) {
if (bestAgentOptions.get(0).getOptionByName(o.getName()) == null) {
continue;
}
newOpt.setValue(bestAgentOptions.get(0).getOptionByName(o.getName()).getValue());
} else {
double sum = 0;
int count = 0;
String optionName = o.getName();
for (Agent a : bestAgentOptions) {
if (a.getOptionByName(optionName) != null) {
sum += Double.parseDouble(a.getOptionByName(optionName).getValue());
}
count++;
}
double avg = sum / count;
double stdDev = 0;
for (Agent a : bestAgentOptions) {
if (a.getOptionByName(optionName) != null) {
stdDev +=
Math.pow(Double.parseDouble(a.getOptionByName(optionName).getValue()) - avg, 2);
}
}
stdDev = Math.sqrt(stdDev / count);
if (stdDev > 0) {
newOpt.setValue("?");
newOpt.setUser_value("?");
newOpt.setMutable(true);
Interval range = new Interval();
range.setMin((float) Math.max(avg - 2 * stdDev, o.getRange().getMin()));
range.setMax((float) Math.min(avg + 2 * stdDev, o.getRange().getMax()));
newOpt.setRange(range);
} else {
if (o.getData_type().equals("FLOAT")) {
newOpt.setValue(Double.toString(avg));
}
if (o.getData_type().equals("INT")) {
newOpt.setValue(Integer.toString((int) avg));
}
}
}
options.add(newOpt);
}
Agent agent = new Agent();
agent.setName(null);
agent.setType(bestAgentType);
agent.setOptions(options);
return agent;
}
/**
* 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();
}
}