// Method processing notification messages from the publisher.
private void OnNotificationMessageReceived(object sender, BrokerMessageReceivedEventArgs e)
{
// The notification event does not come in UI thread.
// Therefore, if we want to work with UI controls we must execute it in the UI thread.
InvokeInUIThread(() =>
{
if (e.ReceivingError == null)
{
if (e.MessageTypeId == "MyNotifyMsg1")
{
NotifyMsg1 aDeserializedMsg = mySerializer.Deserialize<NotifyMsg1>(e.Message);
Received1TextBox.Text = aDeserializedMsg.CurrentTime.ToString();
}
else if (e.MessageTypeId == "MyNotifyMsg2")
{
NotifyMsg2 aDeserializedMsg = mySerializer.Deserialize<NotifyMsg2>(e.Message);
Received2TextBox.Text = aDeserializedMsg.Number.ToString();
}
else if (e.MessageTypeId == "MyNotifyMsg3")
{
NotifyMsg3 aDeserializedMsg = mySerializer.Deserialize<NotifyMsg3>(e.Message);
Received3TextBox.Text = aDeserializedMsg.TextMessage;
}
}
});
}
public void NotifySubscribers()
{
//EneterTrace.DetailLevel = EneterTrace.EDetailLevel.Debug;
//EneterTrace.TraceLog = new StreamWriter("d:/tracefile.txt");
// Create channels
IMessagingSystemFactory aMessagingSystem = new SynchronousMessagingSystemFactory();
IDuplexInputChannel aBrokerInputChannel = aMessagingSystem.CreateDuplexInputChannel("BrokerChannel");
IDuplexOutputChannel aSubscriber1ClientOutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexOutputChannel aSubscriber2ClientOutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexOutputChannel aSubscriber3ClientOutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory();
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
BrokerMessageReceivedEventArgs aBrokerReceivedMessage = null;
aBroker.BrokerMessageReceived += (x, y) =>
{
aBrokerReceivedMessage = y;
};
aBroker.AttachDuplexInputChannel(aBrokerInputChannel);
IDuplexBrokerClient aBrokerClient1 = aBrokerFactory.CreateBrokerClient();
BrokerMessageReceivedEventArgs aClient1ReceivedMessage = null;
aBrokerClient1.BrokerMessageReceived += (x, y) =>
{
aClient1ReceivedMessage = y;
};
aBrokerClient1.AttachDuplexOutputChannel(aSubscriber1ClientOutputChannel);
IDuplexBrokerClient aBrokerClient2 = aBrokerFactory.CreateBrokerClient();
BrokerMessageReceivedEventArgs aClient2ReceivedMessage = null;
aBrokerClient2.BrokerMessageReceived += (x, y) =>
{
aClient2ReceivedMessage = y;
};
aBrokerClient2.AttachDuplexOutputChannel(aSubscriber2ClientOutputChannel);
IDuplexBrokerClient aBrokerClient3 = aBrokerFactory.CreateBrokerClient();
BrokerMessageReceivedEventArgs aClient3ReceivedMessage = null;
aBrokerClient3.BrokerMessageReceived += (x, y) =>
{
aClient3ReceivedMessage = y;
};
aBrokerClient3.AttachDuplexOutputChannel(aSubscriber3ClientOutputChannel);
string[] aSubscription1 = { "TypeA", "TypeB" };
aBrokerClient1.Subscribe(aSubscription1);
string[] aSubscription2 = { "TypeA" };
aBrokerClient2.Subscribe(aSubscription2);
string[] aSubscription3 = { "MTypeC" };
aBrokerClient3.Subscribe(aSubscription3);
aBroker.Subscribe("TypeA");
aBrokerClient3.SendMessage("TypeA", "Message A");
Assert.AreEqual("TypeA", aClient1ReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aClient1ReceivedMessage.Message);
Assert.AreEqual(null, aClient1ReceivedMessage.ReceivingError);
Assert.AreEqual("TypeA", aClient2ReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aClient2ReceivedMessage.Message);
Assert.AreEqual(null, aClient2ReceivedMessage.ReceivingError);
Assert.AreEqual(null, aClient3ReceivedMessage);
Assert.AreEqual("TypeA", aBrokerReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aBrokerReceivedMessage.Message);
Assert.AreEqual(null, aBrokerReceivedMessage.ReceivingError);
aClient1ReceivedMessage = null;
aClient2ReceivedMessage = null;
aClient3ReceivedMessage = null;
aBrokerReceivedMessage = null;
aBrokerClient2.Unsubscribe();
aBrokerClient3.SendMessage("MTypeC", "Message MTC");
Assert.AreEqual(null, aClient1ReceivedMessage);
Assert.AreEqual(null, aClient2ReceivedMessage);
Assert.AreEqual("MTypeC", aClient3ReceivedMessage.MessageTypeId);
Assert.AreEqual("Message MTC", (string)aClient3ReceivedMessage.Message);
Assert.AreEqual(null, aClient3ReceivedMessage.ReceivingError);
Assert.AreEqual(null, aBrokerReceivedMessage);
aClient1ReceivedMessage = null;
aClient2ReceivedMessage = null;
aClient3ReceivedMessage = null;
aBrokerReceivedMessage = null;
aBroker.SendMessage("TypeA", "Message A");
Assert.AreEqual("TypeA", aClient1ReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aClient1ReceivedMessage.Message);
Assert.AreEqual(null, aClient1ReceivedMessage.ReceivingError);
Assert.AreEqual(null, aClient2ReceivedMessage);
Assert.AreEqual(null, aClient3ReceivedMessage);
Assert.AreEqual("TypeA", aBrokerReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aBrokerReceivedMessage.Message);
Assert.AreEqual(null, aBrokerReceivedMessage.ReceivingError);
aClient1ReceivedMessage = null;
aClient2ReceivedMessage = null;
aClient3ReceivedMessage = null;
aBrokerReceivedMessage = null;
aBroker.Unsubscribe("TypeA");
string[] aNewMessageType = { "TypeA" };
aBrokerClient3.Subscribe(aNewMessageType);
aBrokerClient1.DetachDuplexOutputChannel();
aBrokerClient3.SendMessage("TypeA", "Message A");
Assert.AreEqual(null, aClient1ReceivedMessage);
Assert.AreEqual(null, aClient2ReceivedMessage);
Assert.AreEqual("TypeA", aClient3ReceivedMessage.MessageTypeId);
Assert.AreEqual("Message A", (string)aClient3ReceivedMessage.Message);
Assert.AreEqual(null, aClient3ReceivedMessage.ReceivingError);
Assert.AreEqual(null, aBrokerReceivedMessage);
}