Hello,
I have been trying to set up a Last Value Queue using your dotnet API
(client0-10). Most of it works great -- apart from consuming messages without
taking them from the queue (peek).
Basically I want the consumer/listener to receive by not remove the msg from
the lvq, i.e. the setup to work as a last value cache.
Since I couldn't find parameters/methods to set this up using the interface, I
have taken the steps below.
The setup part of my code looks like this:
session.exchangeDeclare("ig.direct", "direct", null, null, new Option[] {
Option.DURABLE });
session.queueDeclare("q1",null,new
Dictionary<string,object>(){{"qpid.last_value_queue",1}}, new Option[] {
Option.DURABLE });
session.exchangeBind("q1", "ig.direct", "routing_key");
The sender/publisher part of the code looks like this (in reality I send a
batch of msgs so they get overwritten):
//List<IMessage> messages = new List<IMessage>() ;
//for (int i = 0; i < Program.NUM_MSGS; i++)
//{
IMessage message = new Message();
message.DeliveryProperties.setRoutingKey("routing_key");
message.DeliveryProperties.setDeliveryMode(MessageDeliveryMode.PERSISTENT);
message.appendData(Encoding.UTF8.GetBytes("Message "));// + i));
message.ApplicationHeaders.Add("qpid.LVQ_key", "INTC");
//messages.Add(message)
//}
session.messageTransfer("ig.direct", message);//s[i]);
The receiver/listener looks like this:
session.attachMessageListener(this, "q1");
session.messageSubscribe("q1");
//public void messageTransfer(IMessage m)
//{
//...
// Console.WriteLine("Message: " + message);
//}
All works with this setup, but the message is removed from the queue.
I have also tried the following in the listener, but in this case the callback
does not get any messages:
session.attachMessageListener(this, "myDest");
session.messageSubscribe("q1", "myDest", MessageAcceptMode.EXPLICIT,
MessageAcquireMode.PRE_ACQUIRED, null, 0, null);
Any clues? Many thanks in advance.- ig
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