public IWampTopic CreateTopicByUri(string topicUri, bool persistent)
{
WampTopic wampTopic = CreateWampTopic(topicUri, persistent);
IDictionary <string, WampTopic> casted = mTopicUriToSubject;
casted.Add(topicUri, wampTopic);
RaiseTopicCreated(wampTopic);
return(wampTopic);
}
private WampTopic CreateWampTopic(string topicUri, bool persistent)
{
WampTopic topic = new WampTopic(topicUri, persistent);
// Non persistent topics die when they are empty :)
if (!persistent)
{
topic.TopicEmpty += OnTopicEmpty;
}
long subscriptionId = mSubscriptionIdToTopic.Add(topic);
topic.SubscriptionId = subscriptionId;
return(topic);
}
private void OnTopicEmpty(object sender, EventArgs e)
{
lock (mLock)
{
WampTopic topic = sender as WampTopic;
if (!topic.HasSubscribers)
{
topic.TopicEmpty -= OnTopicEmpty;
topic.Dispose();
mSubscriptionIdToTopic.TryRemoveExact(topic.SubscriptionId, topic);
if (mTopicUriToSubject.TryRemoveExact(topic.TopicUri, topic))
{
RaiseTopicRemoved(topic);
}
}
}
}
public IWampTopic GetOrCreateTopicByUri(string topicUri)
{
// Pretty ugly.
bool created = false;
WampTopic result =
mTopicUriToSubject.GetOrAdd(topicUri,
key =>
{
WampTopic topic = CreateWampTopic(topicUri, false);
created = true;
return(topic);
});
if (created)
{
RaiseTopicCreated(result);
}
return(result);
}