/// <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>
private async Task UnregisterSubscriberAsync(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);
var deadLetterQueueName = CreateDeadLetterQueueName(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);
await StateManager.RemoveAsync(tx, deadLetterQueueName);
ServiceEventSourceMessage($"Unregistered subscriber: {reference.Name}");
_queues.TryRemove(queueName, out reference);
});
}
/// <summary>
/// Registers a Service or Actor <paramref name="reference"/> as subscriber for messages of type <paramref name="messageTypeName"/>
/// </summary>
/// <param name="reference"></param>
/// <param name="messageTypeName"></param>
/// <returns></returns>
private async Task RegisterSubscriberAsync(ReferenceWrapper reference, string messageTypeName)
{
await WaitForInitializeAsync(CancellationToken.None);
var myDictionary = await TimeoutRetryHelper.Execute((token, state) => StateManager.GetOrAddAsync <IReliableDictionary <string, BrokerServiceState> >(messageTypeName));
await TimeoutRetryHelper.ExecuteInTransaction(StateManager, async (tx, token, state) =>
{
var queueName = CreateQueueName(reference, messageTypeName);
var deadLetterQueueName = CreateDeadLetterQueueName(reference, messageTypeName);
Func <string, BrokerServiceState> addValueFactory = key =>
{
var newState = new BrokerServiceState(messageTypeName);
var subscriber = new Reference(reference, queueName, deadLetterQueueName);
newState = BrokerServiceState.AddSubscriber(newState, subscriber);
return(newState);
};
Func <string, BrokerServiceState, BrokerServiceState> updateValueFactory = (key, current) =>
{
var subscriber = new Reference(reference, queueName, deadLetterQueueName);
var newState = BrokerServiceState.AddSubscriber(current, subscriber);
return(newState);
};
await myDictionary.AddOrUpdateAsync(tx, Subscribers, addValueFactory, updateValueFactory);
await StateManager.GetOrAddAsync <IReliableQueue <MessageWrapper> >(tx, queueName);
await StateManager.GetOrAddAsync <IReliableQueue <MessageWrapper> >(tx, deadLetterQueueName);
_queues.AddOrUpdate(queueName, reference, (key, old) => reference);
ServiceEventSourceMessage($"Registered subscriber: {reference.Name}");
}, cancellationToken : CancellationToken.None);
}
public async Task AddOrUpdate(string messageTypeName, ReferenceWrapper reference)
{
await Initialize(CancellationToken.None);
var myDictionary = await GetStateFor(messageTypeName);
await StateManager.ExecuteInTransaction(async (tx, token, state) =>
{
var queueName = CreateQueueName(reference, messageTypeName);
BrokerServiceState AddValueFactory(string key)
{
var newState = new BrokerServiceState(messageTypeName);
var subscriber = new Reference(reference, queueName);
newState = BrokerServiceState.AddSubscriber(newState, subscriber);
return(newState);
}
BrokerServiceState UpdateValueFactory(string key, BrokerServiceState current)
{
var subscriber = new Reference(reference, queueName);
var newState = BrokerServiceState.AddSubscriber(current, subscriber);
return(newState);
}
await myDictionary.AddOrUpdateAsync(tx, _storeKey, AddValueFactory, UpdateValueFactory);
await CreateQueue(tx, queueName);
_queues.AddOrUpdate(queueName, reference, (key, old) => reference);
}, cancellationToken : CancellationToken.None);
}
public Task AddOrUpdate(string messageTypeName, ReferenceWrapper reference)
{
var myDictionary = _state.GetOrAdd(messageTypeName, s => new ConcurrentDictionary <string, BrokerServiceState>());
var queueName = CreateQueueName(messageTypeName, reference);
BrokerServiceState AddValueFactory(string key)
{
var newState = new BrokerServiceState(messageTypeName);
var subscriber = new Reference(reference, queueName);
newState = BrokerServiceState.AddSubscriber(newState, subscriber);
return(newState);
}
BrokerServiceState UpdateValueFactory(string key, BrokerServiceState current)
{
var subscriber = new Reference(reference, queueName);
var newState = BrokerServiceState.AddSubscriber(current, subscriber);
return(newState);
}
myDictionary.AddOrUpdate(_storeKey, AddValueFactory, UpdateValueFactory);
_queues.AddOrUpdate(queueName, reference, (key, old) => reference);
return(Task.CompletedTask);
}
public Task Remove(string messageTypeName, ReferenceWrapper reference)
{
var myDictionary = _state.GetOrAdd(messageTypeName, s => new ConcurrentDictionary <string, BrokerServiceState>());
var queueName = CreateQueueName(messageTypeName, reference);
if (myDictionary.TryGetValue(_storeKey, out BrokerServiceState subscribers))
{
var newState = BrokerServiceState.RemoveSubscriber(subscribers, reference);
myDictionary.AddOrUpdate(_storeKey, newState, (s, state) => newState);
}
_queues.TryRemove(queueName, out reference);
return(Task.CompletedTask);
}
public async Task Remove(string messageTypeName, ReferenceWrapper reference)
{
await Initialize(CancellationToken.None);
var myDictionary = await GetStateFor(messageTypeName);
var queueName = CreateQueueName(reference, messageTypeName);
await StateManager.ExecuteInTransaction(async (tx, token, state) =>
{
var subscribers = await myDictionary.TryGetValueAsync(tx, _storeKey, LockMode.Update);
if (subscribers.HasValue)
{
var newState = BrokerServiceState.RemoveSubscriber(subscribers.Value, reference);
await myDictionary.SetAsync(tx, _storeKey, newState);
}
await StateManager.RemoveAsync(tx, queueName);
_queues.TryRemove(queueName, out reference);
});
}
