/// <summary>
/// Subscribe to inprocess message bus.
/// </summary>
/// <param name="topic"></param>
/// <param name="filter"></param>
/// <param name="callback"></param>
/// <returns></returns>
/// <remarks>
/// Stores the callback and uses the callback when SignalR calls the main callback.
/// </remarks>
public virtual Task Subscribe(string topic, string filter, MessageBusCallbackDelegate callback)
{
var subscription = new SubscriptionIdentifier(topic, filter);
_messageDispatcher.Subscribe(subscription, callback);
//return emtpy task
return(TaskAsyncHelper.Empty);
}
/// <summary>
/// Informs the message dispatcher of a closed subscription
/// </summary>
/// <param name="subscription">The subscription.</param>
public void Unsubscribe(SubscriptionIdentifier subscription)
{
MessageBusCallbackDelegate temp;
_callbacks.TryRemove(subscription, out temp);
}
/// <summary>
/// Informs the message dispatcher of a new subscription
/// </summary>
/// <param name="subscription">The subscription.</param>
/// <param name="callback">The callback.</param>
public void Subscribe(SubscriptionIdentifier subscription, MessageBusCallbackDelegate callback)
{
_callbacks[subscription] = callback;
}
/// <summary>
/// Determines whether the specified <see cref="System.Object" />, is equal to this instance.
/// </summary>
/// <param name="obj">The <see cref="System.Object" /> to compare with this instance.</param>
/// <returns>
/// <c>true</c> if the specified <see cref="System.Object" /> is equal to this instance; otherwise, <c>false</c>.
/// </returns>
public override bool Equals(object obj)
{
SubscriptionIdentifier other = obj as SubscriptionIdentifier;
return(other != null && other.Selector.Equals(Selector));
}
