public RequestResult TryToExecute(string type, string message, string callbackQueueName)
{
var connection = _connectionFactory.CreateConnection();
try
{
var channel = connection.CreateModel();
channel.ExchangeDeclare("amq.direct", ExchangeType.Direct, true);
channel.QueueDeclare(callbackQueueName, false, false, true, null);
channel.QueueBind(callbackQueueName, "amq.direct", callbackQueueName, null);
_senderProcessor.SendMessage(type, message);
var subscription = _subsctiptionFactory.CreateSubscription(channel, callbackQueueName, false);
var result = subscription.Next(_timeToWait, out var basicDeliveryEventArgs);
if (result)
{
var messageContent = Encoding.UTF8.GetString(basicDeliveryEventArgs.Body);
subscription.Ack(basicDeliveryEventArgs);
connection.Close();
return(new RequestResult {
Result = true, Value = messageContent
});
}
else
{
connection.Close();
return(new RequestResult {
Result = false
});
}
}
catch (Exception)
{
connection.Close();
throw;
}
}
public void OnUserSubscribing(Hub <TClient> hub, int subscriptionId, TSubscribeParameters parameters)
{
var newSubscription = _subscriptionFactory.CreateSubscription(hub.Clients.Caller, parameters);
var existingSubscriptions = GetClientSubscriptions(hub.Context.ConnectionId);
lock (existingSubscriptions)
{
if (existingSubscriptions.Subscriptions.ContainsKey(subscriptionId))
{
throw new InvalidOperationException($"Subscription already exists for subscriptionId '{subscriptionId}'");
}
existingSubscriptions.Subscriptions.Add(subscriptionId, newSubscription);
if (existingSubscriptions.Deleted)
{
existingSubscriptions.Deleted = false;
lock (_subscriptionsByConnectionId)
_subscriptionsByConnectionId.Add(hub.Context.ConnectionId, existingSubscriptions);
}
}
}
/// <summary>
/// Starts any new subscriptions
/// </summary>
/// <param name="activeSubscriptions"></param>
private void AddNewSubscriptions(IEnumerable <Subscription> activeSubscriptions)
{
activeSubscriptions.Where(s => !_subscriptions.ContainsKey(s.ID))
.ForEach(s => _subscriptions.Add(s.ID, _subscriptionFactory.CreateSubscription(s)));
}