| public Schedule ( ISubscription subscription ) : void | ||
| subscription | ISubscription | |
| return | void | |
public virtual IDisposable Subscribe(ISubscriber subscriber, string cursor, Func <MessageResult, object, Task <bool> > callback, int maxMessages, object state)
{
if (subscriber == null)
{
throw new ArgumentNullException("subscriber");
}
if (callback == null)
{
throw new ArgumentNullException("callback");
}
Subscription subscription = CreateSubscription(subscriber, cursor, callback, maxMessages, state);
// Set the subscription for this subscriber
subscriber.Subscription = subscription;
var topics = new HashSet <Topic>();
foreach (var key in subscriber.EventKeys)
{
Topic topic = GetTopic(key);
// Set the subscription for this topic
subscription.SetEventTopic(key, topic);
topics.Add(topic);
}
subscriber.EventKeyAdded += _addEvent;
subscriber.EventKeyRemoved += _removeEvent;
subscriber.WriteCursor = subscription.WriteCursor;
// Add the subscription when it's all set and can be scheduled
// for work
foreach (var topic in topics)
{
topic.AddSubscription(subscription);
}
var disposable = new DisposableAction(_disposeSubscription, subscriber);
// When the subscription itself is disposed then dispose it
subscription.Disposable = disposable;
// If there's a cursor then schedule work for this subscription
if (!String.IsNullOrEmpty(cursor))
{
_broker.Schedule(subscription);
}
return(disposable);
}
