public void start_ping() { for (int i = 0; i < Network.size(); i++) { if (i != this.nodeId) EDSimulator.add( this.ping_frequency, new Message(Message.PING_SCHED, "PING_SCHED " + i), Network.get(this.nodeId), this.mypid); } }
// methode appelee lorsqu'un message est recu par le protocole HelloWorld du noeud public void processEvent(Node node, int pid, Object event) { if (((Message) event).getType() == Message.APP_UPDATE) { this.state++; this.log("APP Update " + this.state); if (CommonState.r.nextInt(10) < 5) { // On envoie un message a un noeud aleatoire this.send( new Message(Message.APP_MSG, "APP MSG " + this.nodeId + "-" + this.state), Network.get(CommonState.r.nextInt(Network.size()))); } if (CommonState.r.nextInt(1000) < 5) { // On broadcast for (int i = 0; i < Network.size(); i++) this.send( new Message(Message.APP_MSG, "APP BROADCAST MSG " + this.nodeId + "-" + this.state), Network.get(i)); } // On ajoute le prochain APP update EDSimulator.add( 10 + CommonState.r.nextInt(10), new Message(Message.APP_UPDATE, "APP Update"), Network.get(this.nodeId), this.mypid); } else if (((Message) event).getType() == Message.APP_MSG) { this.receive((Message) event); } else if (((Message) event).getType() == Message.PING_SCHED) { // On doit envoyer un ping int from = Integer.parseInt(((Message) event).getContent().split(" ")[1]); this.send(new Message(Message.PING, "PING " + this.nodeId), Network.get(from)); // On ajoute le prochain ping timeout EDSimulator.add( this.ping_timeout, new Message(Message.PING_TIMEOUT, "PING_TIMEOUT " + from), Network.get(this.nodeId), this.mypid); } else if (((Message) event).getType() == Message.PING) { this.receive((Message) event); // On a reçu un ping, on renvoie un pong int from = Integer.parseInt(((Message) event).getContent().split(" ")[1]); this.send(new Message(Message.PONG, "PONG " + this.nodeId), Network.get(from)); } else if (((Message) event).getType() == Message.PONG) { this.receive((Message) event); // On a reçu un pong, on enregistre la reception du pong int from = Integer.parseInt(((Message) event).getContent().split(" ")[1]); this.last_pong[from] = CommonState.getTime(); if (!this.nodes_alive[from]) { this.log("\033[22;32mFalse Failure Detection on " + from + "\033[22;0m"); this.nodes_alive[from] = true; } // On ajoute le prochain ping EDSimulator.add( this.ping_frequency, new Message(Message.PING_SCHED, "PING_SCHED " + from), Network.get(this.nodeId), this.mypid); } else if (((Message) event).getType() == Message.PING_TIMEOUT) { this.receive((Message) event); // On a reçu un ping timeout, le processus est peut etre mort int from = Integer.parseInt(((Message) event).getContent().split(" ")[1]); long time_ping = CommonState.getTime() - this.ping_timeout; if (this.nodes_alive[from] && this.last_pong[from] < time_ping) { this.log("\033[22;31mFailure Detection on " + from + "\033[22;0m"); this.nodes_alive[from] = false; } } else { this.log("Crash !"); Network.get(this.nodeId).setFailState(Fallible.DEAD); } }
// retourne le noeud courant private Node getMyNode() { return Network.get(this.nodeId); }
// liaison entre un objet de la couche applicative et un // objet de la couche transport situes sur le meme noeud public void setTransportLayer(int nodeId) { this.nodeId = nodeId; this.transport = (MatrixTransport) Network.get(this.nodeId).getProtocol(this.transportPid); }