/**
* Get a handle to a bootstrap node. This is only a simulation, so we pick the most recently
* created node.
*
* @return handle to bootstrap node, or null.
*/
private NodeHandle getBootstrap() {
NodeHandle bootstrap = null;
try {
PastryNode lastnode = (PastryNode) pastryNodes.lastElement();
bootstrap = lastnode.getLocalHandle();
} catch (NoSuchElementException e) {
}
return bootstrap;
}
/**
* Create a Pastry node and add it to pastryNodes. Also create a client application for this node.
*/
public void makePastryNode(int num) {
PastryNode pn = factory.newNode(getBootstrap());
pastryNodes.addElement(pn);
HelloWorldApp app = new HelloWorldApp(pn);
helloClients.addElement(app);
synchronized (pn) {
while (!pn.isReady()) {
try {
pn.wait(300);
} catch (InterruptedException ie) {
}
}
}
System.out.println("created " + num + " " + pn);
}
/**
* Invoke a HelloWorldApp method called sendRndMsg. First choose a random application from
* helloClients.
*/
private void sendRandomMessage() {
int n = helloClients.size();
int client = environment.getRandomSource().nextInt(n);
HelloWorldApp app = (HelloWorldApp) helloClients.get(client);
app.sendRndMsg(environment.getRandomSource());
}
/** Print leafsets of all nodes in pastryNodes. */
private void printLeafSets() {
for (int i = 0; i < pastryNodes.size(); i++) {
PastryNode pn = (PastryNode) pastryNodes.get(i);
System.out.println(pn.getLeafSet().toString());
}
}