/// <summary>
/// Restores the queue will all received messages (some of them were sent on the first subscription).
/// Subscribes the hub channel to the queue.
/// </summary>
/// <param name="subscriber"></param>
public void SubscribeResume(WorkflowHubSubscriber subscriber)
{
Volatile.Write(ref _subscriber, subscriber);
//RestoreOlder uses an internal lock. The collection will not suffer changes while restoration is in progress
Messages.RestoreOlder();
TrySendMessagesInternal();
}
public void Dispose()
{
_subscriber = null;
InstanceDone = null; //https://stackoverflow.com/questions/153573/how-can-i-clear-event-subscriptions-in-c
Messages.Clear();
//if was called, finalizer no longer needed
GC.SuppressFinalize(this);
}
/// <summary>
/// A <see cref="WorkflowHubSubscriber"/> which contains the actions that send messages to the client is passed.
/// <para>A <see cref="WorkflowBusSubscriber"/> is created and <see cref="WorkflowHubSubscriber"/> subscribes to it</para>
/// </summary>
/// <param name="correlationId">The correlation if for which the <see cref="WorkflowBusSubscriber"/> is created</param>
/// <param name="clientSubscriber">The signalR subscriber</param>
/// <param name="correlatedInstance">The service bus subscriber</param>
public void WorkflowRelayStart(string correlationId, WorkflowHubSubscriber clientSubscriber, out WorkflowBusSubscriber correlatedInstance)
{
WorkflowBusSubscriber instance = new WorkflowBusSubscriber(correlationId);
_correlatedInstances.TryAdd(correlationId, instance);
instance.Subscribe(clientSubscriber);
correlatedInstance = instance;
}
// <summary>
/// A <see cref="WorkflowHubSubscriber"/> which contains the actions that send messages to the client is passed.
/// <para>A <see cref="WorkflowBusSubscriber"/> is searched in the list of saved subscribers
/// </summary>
/// <param name="correlationId">The correlation if for which the <see cref="WorkflowBusSubscriber"/> is created</param>
/// <param name="clientSubscriber">The signalR subscriber</param>
/// <param name="correlatedInstance">The service bus subscriber</param>
/// <returns>Returns true if a busSubscriber was found. False otherwhise</returns>
public bool WorkflowRelayResume(string correlationId, WorkflowHubSubscriber clientSubscriber, out WorkflowBusSubscriber correlatedInstance)
{
_correlatedInstances.TryGetValue(correlationId, out WorkflowBusSubscriber _correlatedInstance);
if (!(_correlatedInstance is null))
{
_correlatedInstance.SubscribeResume(clientSubscriber);
correlatedInstance = _correlatedInstance;
return(true);
}
correlatedInstance = null;
return(false);
}
public void Subscribe(WorkflowHubSubscriber subscriber)
{
Volatile.Write(ref _subscriber, subscriber);
TrySendMessagesInternal();
}