public void SendResponse(MessageContext context, HttpResponsePacket response)
{
if (disposed)
{
throw new ObjectDisposedException("Subscriber has been disposed");
}
if (String.IsNullOrEmpty(context.ReplyToQueue))
{
return;
}
if (conn == null)
{
//TODO: Log this -- it technically shouldn't happen. Also translate to a HTTP Unreachable because it means StartCallbackQueueConsumer didn't create a connection
throw new ApplicationException("This is Bad");
}
//TODO: Channel Pool this connection
using (IModel channel = conn.CreateModel())
{
BasicProperties basicProperties = new BasicProperties {
CorrelationId = context.CorrelationId
};
try
{
channel.BasicPublish(String.Empty,
context.ReplyToQueue,
basicProperties,
response.Serialize());
}
catch {
//TODO: Log execption
}
}
}
public void SendResponse(MessageContext context, HttpResponsePacket response)
{
if (disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
var dispatch = context.Dispatch as MessageDispatch;
if (dispatch != null)
{
//Ack request
if (Settings.AckBehavior != SubscriberAckBehavior.Automatic && dispatch.Consumer.Model.IsOpen)
{
dispatch.Consumer.Model.BasicAck(dispatch.Delivery.DeliveryTag, false);
//NOTE: The call above takes place in different threads silmultaneously
//In which case multiple threads will be using the same channel at the same time.
//It's okay in this case, because transmissions within a channel are synchronized, as seen in:
//https://github.com/rabbitmq/rabbitmq-dotnet-client/blob/f16c093f6409e11d9d77115038cb224eb39468ec/projects/client/RabbitMQ.Client/src/client/impl/ModelBase.cs#L459
//and
//https://github.com/rabbitmq/rabbitmq-dotnet-client/blob/f16c093f6409e11d9d77115038cb224eb39468ec/projects/client/RabbitMQ.Client/src/client/impl/SessionBase.cs#L177
}
}
//Exit method if no replyToQueue was specified.
if (String.IsNullOrEmpty(context.ReplyToQueue))
{
return;
}
if (_subscriberPool.Connection == null)
{
//TODO: Log this -- it technically shouldn't happen. Also translate to a HTTP Unreachable because it means StartCallbackQueueConsumer didn't create a connection
throw new InvalidOperationException("This is Bad");
}
//Add/Update Subscriber-Id header
response.Headers[Common.Shared.SUBSCRIBER_ID_HEADER] = subscriberIdHeader;
//Send response
var pooler = _subscriberPool;
AmqpModelContainer model = null;
try
{
model = pooler.GetModel(ChannelFlags.None);
BasicProperties basicProperties = new BasicProperties {
CorrelationId = context.CorrelationId
};
model.Channel.BasicPublish(String.Empty,
context.ReplyToQueue,
basicProperties,
response.Serialize());
}
finally
{
if (model != null)
{
model.Close();
}
}
}