private boolean subscribeSingleTopic(final Subscription newSubscription) {
subscriptions.add(newSubscription.asClientTopicCouple());
// scans retained messages to be published to the new subscription
// TODO this is ugly, it does a linear scan on potential big dataset
Collection<IMessagesStore.StoredMessage> messages =
m_messagesStore.searchMatching(
new IMatchingCondition() {
public boolean match(String key) {
return SubscriptionsStore.matchTopics(key, newSubscription.getTopicFilter());
}
});
ClientSession targetSession = m_sessionsStore.sessionForClient(newSubscription.getClientId());
verifyToActivate(newSubscription.getClientId(), targetSession);
for (IMessagesStore.StoredMessage storedMsg : messages) {
// fire the as retained the message
LOG.debug("send publish message for topic {}", newSubscription.getTopicFilter());
// forwardPublishQoS0(newSubscription.getClientId(), storedMsg.getTopic(), storedMsg.getQos(),
// storedMsg.getPayload(), true);
Integer packetID =
storedMsg.getQos() == QOSType.MOST_ONE
? null
: m_messagesStore.nextPacketID(newSubscription.getClientId());
directSend(
targetSession,
storedMsg.getTopic(),
storedMsg.getQos(),
storedMsg.getPayload(),
true,
packetID);
}
// notify the Observables
m_interceptor.notifyTopicSubscribed(newSubscription);
return true;
}
