private Subscription CreateSubscription <T>(string subscriptionName, Func <IModel, string, IBasicConsumer> createConsumer)
{
var subscription = new Subscription {
SubscriptionName = subscriptionName
};
var id = Guid.NewGuid();
Action subscriptionAction = () =>
{
subscription.QueueName = _routeFinder.FindQueueName <T>(subscriptionName);
subscription.ConsumerTag = string.Format("{0}-{1}", subscriptionName, Guid.NewGuid());
var channel = _connection.CreateChannel();
channel.ModelShutdown += (c, reason) =>
{
RaiseConsumerDisconnectedEvent(subscription);
TryReconnect(c, id, reason);
};
if (Global.PreFetchSize <= ushort.MaxValue)
{
channel.BasicQos(0, (ushort)Global.PreFetchSize, false);
}
else
{
_watcher.WarnFormat("The prefetch size is too high {0}, maximum {1}, the queue will prefetch all the msgs", Global.PreFetchSize, ushort.MaxValue);
}
_createdChannels.Add(channel);
subscription.SetChannel(channel);
var consumer = createConsumer(channel, subscription.ConsumerTag);
if (consumer is DefaultBasicConsumer)
{
(consumer as DefaultBasicConsumer).ConsumerTag = subscription.ConsumerTag;
}
//NOTE: The message will still be on the Unacknowledged list until it's processed and the method
// DoAck is call.
channel.BasicConsume(subscription.QueueName, false /* noAck, must be false */, subscription.ConsumerTag, consumer);
_watcher.InfoFormat("Subscribed to: {0} with subscriptionName: {1}", subscription.QueueName, subscription.SubscriptionName);
};
_subscribeActions[id] = subscriptionAction;
TrySubscribe(subscriptionAction);
return(subscription);
}
private Subscription CreateSubscription(string subscriptionName, string queueName, Func <IModel, IBasicConsumer> createConsumer, ushort prefetchSize)
{
var subscription = new Subscription {
SubscriptionName = subscriptionName
};
var id = Guid.NewGuid();
Action subscriptionAction = () =>
{
subscription.QueueName = queueName;
subscription.ConsumerTag = $"{subscriptionName}-{Guid.NewGuid()}";
var channel = _connection.CreateChannel();
channel.ModelShutdown += (c, reason) =>
{
if (_disposed)
{
return;
}
RaiseConsumerDisconnectedEvent(subscription);
TryReconnect((IModel)c, id, reason);
};
channel.BasicQos(0, prefetchSize, false);
_createdChannels.Add(channel);
var consumer = createConsumer(channel);
if (consumer is DefaultBasicConsumer)
{
(consumer as DefaultBasicConsumer).ConsumerTag = subscription.ConsumerTag;
}
Subscription.OutstandingDeliveryTags[subscription.ConsumerTag] = new List <ulong>();
subscription.SetChannel(channel);
//NOTE: The message will still be on the Unacknowledged list until it's processed and the method
// DoAck is call.
channel.BasicConsume(subscription.QueueName, false /* noAck, must be false */, subscription.ConsumerTag, consumer);
_watcher.InfoFormat("Subscribed to: {0} with subscriptionName: {1}", subscription.QueueName, subscription.SubscriptionName);
};
_subscribeActions[id] = subscriptionAction;
TrySubscribe(subscriptionAction);
return(subscription);
}
