public Listener(TopicSubscriber topicSubscriber, IRTDUpdateEvent callback)
{
LatestValue = "no update recieved";
this.rtdUpdateEvent = callback;
this.TopicSubscriber = topicSubscriber;
TopicSubscriber.OnMessageRecieved += OnMessageRecieved;
}
public void CanPublishAndSubscribe()
{
var messageToSend = DateTime.Now.ToLongTimeString();
var recievedMessage = "";
var waitForEvent = new EventWaitHandle(false,EventResetMode.AutoReset);
using (var subscriber = new TopicSubscriber(session, "Excel.Test.Topic"))
{
subscriber.OnMessageRecieved += (sender, m) =>
{
waitForEvent.Set();
recievedMessage = m.Message;
};
subscriber.Start("topic consumer");
using (var publisher = new TopicPublisher(session, "Excel.Test.Topic"))
{
publisher.SendMessage(messageToSend);
}
waitForEvent.WaitOne();
}
Assert.AreEqual(messageToSend, recievedMessage);
}
public object ConnectData(int rtdTopicId, ref Array strings, ref bool newValues)
{
try
{
if (!isInitialised)
{
// There was a problem setting up the connection properties
// so return the error and leave
return lastErrorMsg;
}
var topicName = strings.GetValue(0).ToString();
// Have we all ready subscribed to this Topic
// if we have we don't want to re-subscribe we can just use the other subscription
// and have different check values
var currentTopicSubscriber = GetCurrentTopicSubscriber(topicName);
if (currentTopicSubscriber==null)
{
// Create a new Consumer
currentTopicSubscriber = new TopicSubscriber(session, topicName);
currentTopicSubscriber.Start("myConsumerId");
currentTopicSubscribers.Add(currentTopicSubscriber);
}
var listener = new Listener(currentTopicSubscriber, rtdCallback);
rtdTopicListeners.Add(rtdTopicId, listener);
return "connected to ActiveMQ topic: " + topicName;
}
catch (Exception ex)
{
lastErrorMsg = ex.Message;
return lastErrorMsg;
}
}
