public Form1()
{
InitializeComponent();
// Create ProtoBuf serializer.
mySerializer = new ProtoBufSerializer();
// Create the broker client that will receive notification messages.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory(mySerializer);
myBrokerClient = aBrokerFactory.CreateBrokerClient();
myBrokerClient.BrokerMessageReceived += OnNotificationMessageReceived;
// Create the Tcp messaging for the communication with the publisher.
// Note: For the interprocess communication you can use: Tcp, NamedPipes and Http.
IMessagingSystemFactory aMessagingFactory = new TcpMessagingSystemFactory();
// Create duplex output channel for the communication with the publisher.
// Note: The duplex output channel can send requests and receive responses.
// In our case, the broker client will send requests to subscribe/unsubscribe
// and receive notifications as response messages.
myOutputChannel = aMessagingFactory.CreateDuplexOutputChannel("tcp://127.0.0.1:7091/");
// Attach the output channel to the broker client
myBrokerClient.AttachDuplexOutputChannel(myOutputChannel);
}
public void DoNotNotifyPublisher()
{
// Create channels
IMessagingSystemFactory aMessagingSystem = new SynchronousMessagingSystemFactory();
IDuplexInputChannel aBrokerInputChannel = aMessagingSystem.CreateDuplexInputChannel("BrokerChannel");
IDuplexOutputChannel aClient1OutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexOutputChannel aClient2OutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
// Specify in the factory that the publisher shall not be notified from its own published events.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory()
{
IsPublisherNotified = false
};
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
aBroker.AttachDuplexInputChannel(aBrokerInputChannel);
IDuplexBrokerClient aClient1 = aBrokerFactory.CreateBrokerClient();
List <BrokerMessageReceivedEventArgs> aClient1ReceivedMessage = new List <BrokerMessageReceivedEventArgs>();
aClient1.BrokerMessageReceived += (x, y) =>
{
aClient1ReceivedMessage.Add(y);
};
aClient1.AttachDuplexOutputChannel(aClient1OutputChannel);
IDuplexBrokerClient aClient2 = aBrokerFactory.CreateBrokerClient();
List <BrokerMessageReceivedEventArgs> aClient2ReceivedMessage = new List <BrokerMessageReceivedEventArgs>();
aClient2.BrokerMessageReceived += (x, y) =>
{
aClient2ReceivedMessage.Add(y);
};
aClient2.AttachDuplexOutputChannel(aClient2OutputChannel);
aClient1.Subscribe("TypeA");
aClient2.Subscribe("TypeA");
// Notify the message.
aClient2.SendMessage("TypeA", "Message A");
// Client 2 should not get the notification.
Assert.AreEqual(1, aClient1ReceivedMessage.Count);
Assert.AreEqual(0, aClient2ReceivedMessage.Count);
Assert.AreEqual("TypeA", aClient1ReceivedMessage[0].MessageTypeId);
Assert.AreEqual("Message A", (String)aClient1ReceivedMessage[0].Message);
}
static void Main(string[] args)
{
// Create broker.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory();
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
// Communicate using WebSockets.
IMessagingSystemFactory aMessaging = new WebSocketMessagingSystemFactory();
IDuplexInputChannel anInputChannel = aMessaging.CreateDuplexInputChannel("ws://127.0.0.1:8843/CpuUsage/");
anInputChannel.ResponseReceiverConnected += (x, y) =>
{
Console.WriteLine("Connected client: " + y.ResponseReceiverId);
};
anInputChannel.ResponseReceiverDisconnected += (x, y) =>
{
Console.WriteLine("Disconnected client: " + y.ResponseReceiverId);
};
// Attach input channel and start listeing.
aBroker.AttachDuplexInputChannel(anInputChannel);
var tokenSource = new CancellationTokenSource();
var sendMonitoringMessages = Task.Run(() => SendMonitoringMessages(aBroker, tokenSource.Token), tokenSource.Token);
Console.WriteLine("CpuUsageService is running press ENTER to stop.");
Console.ReadLine();
tokenSource.Cancel();
try
{
sendMonitoringMessages.Wait();
}
catch (AggregateException)
{
}
catch (TaskCanceledException)
{
}
// Detach the input channel and stop listening.
aBroker.DetachDuplexInputChannel();
}
public Form1()
{
InitializeComponent();
// Create ProtoBuf serializer.
mySerializer = new ProtoBufSerializer();
// Create broker client responsible for sending messages to the broker.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory(mySerializer);
myBrokerClient = aBrokerFactory.CreateBrokerClient();
// Create output channel to send messages via Tcp.
IMessagingSystemFactory aMessaging = new TcpMessagingSystemFactory();
myOutputChannel = aMessaging.CreateDuplexOutputChannel("tcp://127.0.0.1:7091/");
// Attach the output channel to the broker client to be able to send messages.
myBrokerClient.AttachDuplexOutputChannel(myOutputChannel);
}
public void SubscribeSameMessageTwice()
{
// Create channels
IMessagingSystemFactory aMessagingSystem = new SynchronousMessagingSystemFactory();
IDuplexInputChannel aBrokerInputChannel = aMessagingSystem.CreateDuplexInputChannel("BrokerChannel");
IDuplexOutputChannel aSubscriberClientOutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexOutputChannel aPublisherClientOutputChannel = aMessagingSystem.CreateDuplexOutputChannel("BrokerChannel");
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory();
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
aBroker.AttachDuplexInputChannel(aBrokerInputChannel);
IDuplexBrokerClient aSubscriber = aBrokerFactory.CreateBrokerClient();
List <BrokerMessageReceivedEventArgs> aClient1ReceivedMessage = new List <BrokerMessageReceivedEventArgs>();
aSubscriber.BrokerMessageReceived += (x, y) =>
{
aClient1ReceivedMessage.Add(y);
};
aSubscriber.AttachDuplexOutputChannel(aSubscriberClientOutputChannel);
IDuplexBrokerClient aPublisher = aBrokerFactory.CreateBrokerClient();
aPublisher.AttachDuplexOutputChannel(aPublisherClientOutputChannel);
// Subscribe the 1st time.
aSubscriber.Subscribe("TypeA");
// Subscribe the 2nd time.
aSubscriber.Subscribe("TypeA");
// Notify the message.
aPublisher.SendMessage("TypeA", "Message A");
// Although the client is subscribed twice, the message shall be notified once.
Assert.AreEqual(1, aClient1ReceivedMessage.Count);
Assert.AreEqual("TypeA", aClient1ReceivedMessage[0].MessageTypeId);
Assert.AreEqual("Message A", (String)aClient1ReceivedMessage[0].Message);
}
static void Main(string[] args)
{
// Create ProtoBuf serializer.
ISerializer aSerializer = new ProtoBufSerializer();
// Create the broker.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory(aSerializer);
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
// Create the Input channel receiving messages via Tcp.
// Note: You can also choose NamedPipes or Http.
// (if you choose http, do not forget to execute it with sufficient user rights)
IMessagingSystemFactory aMessaging = new TcpMessagingSystemFactory();
IDuplexInputChannel aBrokerInputChannel = aMessaging.CreateDuplexInputChannel("tcp://127.0.0.1:7091/");
aBroker.AttachDuplexInputChannel(aBrokerInputChannel);
// Attach the input channel to the broker and start listening.
Console.WriteLine("The broker application is running. Press ENTER to stop.");
Console.ReadLine();
aBroker.DetachDuplexInputChannel();
}
private void Notify(int numberOfTimes, ISerializer serializer, IMessagingSystemFactory messaging, string aBrokerAddress)
{
IDuplexInputChannel aBrokerInputChannel = messaging.CreateDuplexInputChannel(aBrokerAddress);
IDuplexOutputChannel aClient1OutputChannel = messaging.CreateDuplexOutputChannel(aBrokerAddress);
IDuplexOutputChannel aClient2OutputChannel = messaging.CreateDuplexOutputChannel(aBrokerAddress);
// Specify in the factory that the publisher shall not be notified from its own published events.
IDuplexBrokerFactory aBrokerFactory = new DuplexBrokerFactory(serializer)
{
IsPublisherNotified = false
};
IDuplexBroker aBroker = aBrokerFactory.CreateBroker();
aBroker.AttachDuplexInputChannel(aBrokerInputChannel);
IDuplexBrokerClient aClient1 = aBrokerFactory.CreateBrokerClient();
int aCount = 0;
AutoResetEvent aCompletedEvent = new AutoResetEvent(false);
aClient1.BrokerMessageReceived += (x, y) =>
{
++aCount;
if (aCount == numberOfTimes)
{
aCompletedEvent.Set();
}
};
aClient1.AttachDuplexOutputChannel(aClient1OutputChannel);
IDuplexBrokerClient aClient2 = aBrokerFactory.CreateBrokerClient();
aClient2.AttachDuplexOutputChannel(aClient2OutputChannel);
try
{
var aTimer = new PerformanceTimer();
aTimer.Start();
aClient1.Subscribe("TypeA");
for (int i = 0; i < numberOfTimes; ++i)
{
// Notify the message.
aClient2.SendMessage("TypeA", "Message A");
}
aCompletedEvent.WaitOne();
aTimer.Stop();
// Client 2 should not get the notification.
Assert.AreEqual(numberOfTimes, aCount);
}
finally
{
aClient1.DetachDuplexOutputChannel();
aClient2.DetachDuplexOutputChannel();
aBroker.DetachDuplexInputChannel();
}
}
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);
}
