public void processSubscribe(ServerChannel session, SubscribeMessage msg) {
String clientID = (String) session.getAttribute(NettyChannel.ATTR_KEY_CLIENTID);
LOG.debug("SUBSCRIBE client <{}> packetID {}", clientID, msg.getMessageID());
ClientSession clientSession = m_sessionsStore.sessionForClient(clientID);
verifyToActivate(clientID, clientSession);
// ack the client
SubAckMessage ackMessage = new SubAckMessage();
ackMessage.setMessageID(msg.getMessageID());
List<Subscription> newSubscriptions = new ArrayList<>();
for (SubscribeMessage.Couple req : msg.subscriptions()) {
AbstractMessage.QOSType qos = AbstractMessage.QOSType.valueOf(req.getQos());
Subscription newSubscription = new Subscription(clientID, req.getTopicFilter(), qos);
// boolean valid = subscribeSingleTopic(newSubscription, req.getTopicFilter());
boolean valid = clientSession.subscribe(req.getTopicFilter(), newSubscription);
ackMessage.addType(valid ? qos : AbstractMessage.QOSType.FAILURE);
if (valid) {
newSubscriptions.add(newSubscription);
}
}
// save session, persist subscriptions from session
LOG.debug("SUBACK for packetID {}", msg.getMessageID());
if (LOG.isTraceEnabled()) {
LOG.trace("subscription tree {}", subscriptions.dumpTree());
}
session.write(ackMessage);
// fire the publish
for (Subscription subscription : newSubscriptions) {
subscribeSingleTopic(subscription);
}
}
