public void WhenMultipleSubscribers_EachGetOwnMessage()
{
// arrange
var client = CreateOutboundTransportMock();
// create two subscriptions for "mytopic"
this.subscriptionStore.AddSubscription(new Subscription("mytopic", "e1", "c1"));
this.subscriptionStore.AddSubscription(new Subscription("mytopic", "e2", "c2"));
var bus = new MessageBus(this.subscriptionManager, client.Object, NullLoggerFactory.Instance);
var message = new Message(new object(), "mytopic");
// act
bus.Send(message);
// assert
// since multiple messages are to be sent, it should use the SendMultiple method
client.Verify(b => b.Send(It.IsAny<TransportMessage>()), Times.Never);
client.Verify(b =>
b.SendMultiple(It.Is<IEnumerable<TransportMessage>>(msgs =>
msgs.Count() == 2 &&
msgs.Count(m => m.Headers[MessageHeaders.Endpoint] == "e1" &&
m.Headers[MessageHeaders.Component] == "c1") == 1 &&
msgs.Count(m => m.Headers[MessageHeaders.Endpoint] == "e2" &&
m.Headers[MessageHeaders.Component] == "c2") == 1)
), Times.Once);
}
private TransportMessage BuildTransportMessage(Message message, Subscription subscription)
{
JObject jsonPayload = message.Payload is JObject ?
(JObject)message.Payload
: JObject.FromObject(message.Payload);
var transportMessage = new TransportMessage();
// reuse existing Id or create a new one
transportMessage.Id = message.Headers.GetOrDefault(MessageHeaders.Id) ?? Guid.NewGuid().ToString();
transportMessage.Name = message.Name;
transportMessage.Body = jsonPayload;
// copy original headers
foreach (var header in message.Headers)
{
transportMessage.Headers[header.Key] = header.Value;
}
// add subscription headers
transportMessage.Headers[MessageHeaders.Endpoint] = subscription.Endpoint; // destination queue / processor
transportMessage.Headers[MessageHeaders.Component] = subscription.Component; //handler within the processor
Console.WriteLine("Sending {0} to {1}", transportMessage.Name, subscription.Endpoint);
return transportMessage;
}
public void WhenNoSubscribers_MessageIsNotSent()
{
// arrange
var client = CreateOutboundTransportMock();
var bus = new MessageBus(this.subscriptionManager, client.Object, NullLoggerFactory.Instance);
var message = new Message(new object(), "topic");
// act
bus.Send(message);
// assert
client.Verify(b => b.Send(It.IsAny<TransportMessage>()), Times.Never);
}
public Task Send(Message message)
{
return Send(new[] { message });
}
