/// <summary>
/// Unregisters a Service or Actor <paramref name="reference"/> as subscriber for messages of type <paramref name="messageTypeName"/>
/// </summary>
/// <param name="reference"></param>
/// <param name="messageTypeName"></param>
/// <returns></returns>
public async Task UnsubscribeAsync(ReferenceWrapper reference, string messageTypeName)
{
await WaitForInitializeAsync(CancellationToken.None);
var myDictionary = await TimeoutRetryHelper.Execute((token, state) => StateManager.GetOrAddAsync <IReliableDictionary <string, BrokerServiceState> >(messageTypeName));
var queueName = CreateQueueName(reference, messageTypeName);
await TimeoutRetryHelper.ExecuteInTransaction(StateManager, async (tx, token, state) =>
{
var subscribers = await myDictionary.TryGetValueAsync(tx, Subscribers, LockMode.Update);
if (subscribers.HasValue)
{
var newState = BrokerServiceState.RemoveSubscriber(subscribers.Value, reference);
await myDictionary.SetAsync(tx, Subscribers, newState);
}
await StateManager.RemoveAsync(tx, queueName);
ServiceEventSourceMessage($"Unregistered subscriber: {reference.Name}");
_queues.TryRemove(queueName, out reference);
await BrokerEventsManager.OnUnsubscribedAsync(queueName, reference, messageTypeName);
});
}
/// <summary>
/// Unregisters a Service or Actor <paramref name="reference"/> as subscriber for messages of type <paramref name="messageTypeName"/>
/// </summary>
/// <param name="reference"></param>
/// <param name="messageTypeName"></param>
/// <returns></returns>
public async Task UnsubscribeAsync(ReferenceWrapper reference, string messageTypeName)
{
await WaitForInitializeAsync(CancellationToken.None);
var brokerState = await TimeoutRetryHelper.Execute((token, state) => StateManager.GetOrAddAsync <IReliableDictionary <string, BrokerServiceState> >(messageTypeName));
await TimeoutRetryHelper.ExecuteInTransaction(StateManager, async (tx, token, state) =>
{
var queueName = SubscriptionDetails.CreateQueueName(reference, messageTypeName);
if (_subscriptions.TryGetValue(queueName, out var subscription))
{
await brokerState.RemoveSubscription(tx, Subscribers, subscription.SubscriptionDetails);
}
await StateManager.RemoveAsync(tx, queueName);
ServiceEventSourceMessage($"Unregistered subscriber: {reference.Name}");
_subscriptions.TryRemove(queueName, out _);
await _brokerEventsManager.OnUnsubscribedAsync(queueName, reference, messageTypeName);
});
}
