/** Intercepts all messages sent from the client */
@Override
public String handle(ClientImpl client, Transport transport, Message message)
throws IOException {
if (!message.getChannel().startsWith("/meta")) {
// These are published messages
Persistable target =
(Persistable) Identification.idForString((String) message.getChannel()).getTarget();
Function messageFunc = (Function) target.get("message");
messageFunc.call(
PersevereContextFactory.getContext(),
GlobalData.getGlobalScope(),
target,
new Object[] {message.getData()});
// don't actually publish it, let Persevere handle it
return null;
}
if (message.getChannel().startsWith("/meta/subscribe")) {
// A subscription request, we just need to make sure the global listener
// object is subscribed to the given resource
String id = (String) message.get("subscription");
while (id.endsWith("*")) {
id = id.substring(0, id.length() - 1);
}
Object target = Identification.idForString(id).getTarget();
if (target instanceof ObservablePersistable) ((ObservablePersistable) target).subscribe();
PersistableObject.addListener(jettyBayeuxRestListener);
}
return super.handle(client, transport, message);
}
/* ------------------------------------------------------------ */
private void doInvoke(Method method, Client fromClient, Client toClient, Message msg) {
String channel = (String) msg.get(Bayeux.CHANNEL_FIELD);
Object data = msg.get(Bayeux.DATA_FIELD);
String id = msg.getId();
if (method != null) {
try {
Class<?>[] args = method.getParameterTypes();
Object arg = Message.class.isAssignableFrom(args[1]) ? msg : data;
Object reply = null;
switch (method.getParameterTypes().length) {
case 2:
reply = method.invoke(this, fromClient, arg);
break;
case 3:
reply = method.invoke(this, fromClient, arg, id);
break;
case 4:
reply = method.invoke(this, fromClient, channel, arg, id);
break;
}
if (reply != null) send(fromClient, channel, reply, id);
} catch (Exception e) {
System.err.println(method);
exception(fromClient, toClient, msg, e);
} catch (Error e) {
System.err.println(method);
exception(fromClient, toClient, msg, e);
}
}
}
public void deliver(Client fromClient, Client toClient, Message msg) {
if (!_seeOwn && fromClient == getClient()) return;
String channel = (String) msg.get(Bayeux.CHANNEL_FIELD);
Method method = _methods.get(channel);
invoke(method, fromClient, toClient, msg);
}