/** * 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; } } }
/** An agent has just died on the FrontEnd. Remove its image and notify the Main */ public void deadAgent(String name) throws IMTPException { AID id = new AID(name, AID.ISLOCALNAME); myLogger.log(Logger.INFO, getID() + " - Handling termination of agent " + id.getLocalName()); handleEnd(id); }