public void InvokeCallbacksWith(PublishingTopic publishingTopic, T message)
{
//note: I would also change the delegate to accept SubscriptionTopic rather than generic built in string type, which doesn't distinguish between SubscriptionTopic and PublishingTopic
_subscribers
.Values
.ToList()
.ForEach(callback => callback.Invoke(publishingTopic.AsString(), message));
}
/// <summary>
/// Publishes the message to specified topic.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="topicAsString">The topic.</param>
/// <exception cref="InvalidTopicException"></exception>
public void Publish(string topicAsString, T message)
{
//note: I'd rather pass strongly typed PublishingTopic as the parameter, but in order to not change the original tests, I did the conversion here; same goes for Subscribe method
var publishingTopic = PublishingTopic.From(topicAsString);
_subscribers
.Matching(publishingTopic)
.InvokeCallbacksWith(publishingTopic, message);
}
public bool Matches(PublishingTopic publishingTopic)
{
if (_levels.HasMoreElementsThan(publishingTopic.AsLevels()))
{
return(false);
}
return(_levels
.Zip(publishingTopic.AsLevels(), (first, second) => first.Matches(second))
.All(isMatching => isMatching));
}
public Subscribers <T> Matching(PublishingTopic publishingTopic)
{
return(new Subscribers <T>(_subscribers
.Where(sub => sub.Key.Matches(publishingTopic))
.ToDictionary(x => x.Key, x => x.Value)));
}
