public void Subscribe <TPayload>(IMessage message, Func <IPayloadWrapper <TPayload>, Task <HandleResult> > handler,
SubscriptionType type = SubscriptionType.SharedBetweenConsumers, SubscriptionConfig configuration = null)
where TPayload : IPayload
{
var qName = InitializeQueue <TPayload>(message, type, configuration, out var channel, out _);
var concurrencyLimit = configuration?.ConcurrencyLimit ?? _config.ConcurrencyLimit;
var consumer = CreateConsumer(channel, handler);
channel.BasicQos(0, (ushort)concurrencyLimit, false);
channel.BasicConsume(queue: qName, autoAck: false, consumer: consumer);
}
private string InitializeQueue <TPayload>(IMessage message, SubscriptionType type, SubscriptionConfig configuration,
out IModel channel, out QueueDeclareOk declaration) where TPayload : IPayload
{
if (!_isInitialized)
{
throw new InvalidOperationException("Not initialized yet, " +
"don't forget to call 'Init()' method at least once");
}
var consumerName = _consumerName;
var autoDelete = false;
if (type == SubscriptionType.PerConsumer)
{
autoDelete = true;
consumerName = $"{consumerName}.{INSTANCE_IDENTIFICATION}";
}
var qName = RabbitConsts.GenerateQueueName(
RabbitConsts.QueuePrefix,
RabbitConsts.QueueConsumerPrefix,
consumerName,
message.RoutingKey);
channel = GetChannel();
var arguments = configuration?.QueueArguments;
var createDeadLetter = configuration?.CreateDeadLetterQueue ?? _config.CreateDeadLetterQueue ?? false;
if (createDeadLetter)
{
arguments = ConfigureDeadLetter(channel, qName, arguments);
}
declaration = channel.QueueDeclare(queue: qName, durable: true, exclusive: false, autoDelete: autoDelete, arguments: arguments);
channel.QueueBind(queue: qName, exchange: RabbitConsts.ExchangeName, routingKey: message.RoutingKey);
return(qName);
}
public void Subscribe <TPayload>(IMessage message, Func <IPayloadWrapper <TPayload>, Task <HandleResult> > handler,
SubscriptionType type = SubscriptionType.SharedBetweenConsumers, SubscriptionConfig configuration = null) where TPayload : IPayload
{
LogMessage($"Subscribing to message '{message?.GetType().Name}', type: {type}");
}