static void Main(string[] args)
{
Console.WriteLine("Setting up MessageBus");
var messageBus = new MessageBusBuilder().UseLogger(new DelegateLogger(Console.WriteLine)).Build();
var t1 = messageBus.InitializeRabbitMq("host=vboxguest.asinetwork.local;username=guest;password=guest");
// Messages from local, with topic "send" are sent to rabbit
var t2 = messageBus.Subscribe <MyTestPayload>(b => b
.WithTopic("send")
.ForwardToRabbitMq(r => r.UseDefaultQueue())
.OnWorker()
);
messageBus.Subscribe <MyTestPayload>(b => b
.WithTopic("send")
.Invoke(s => Console.WriteLine("Sending: " + s.Text)));
// Subscript to "send" topic on rabbit, and forward those messages locally on the "received" topic
var t3 = messageBus.PullRabbitMqToLocal <MyTestPayload>(r => r
.ForAllRemoteTopics()
.ReceiveDefaultFormat()
.ForwardToLocalTopic("received")
.UseSharedQueueName()
.AutoExpireQueue());
// Messages from rabbit, with topic "received" get printed on the console
var t4 = messageBus.Subscribe <MyTestPayload>(b => b
.WithTopic("received")
.InvokeEnvelope(m =>
{
Console.WriteLine("Received: " + m.Payload.Text);
}));
//Console.WriteLine("Sending message (should print 'whatever' if successful)");
for (int i = 0; i < 100; i++)
{
messageBus.Publish("send", new MyTestPayload
{
Text = "test message " + i
});
Thread.Sleep(1000);
}
Console.WriteLine("Press any key to continue");
Console.ReadKey();
messageBus.Dispose();
Environment.Exit(0);
}
static void Main(string[] args)
{
// ToDo: Provider your event hub names
var eventHubNameForAddCommand = "add-command";
var eventHubNameForMultiplyRequest = "multiply-request";
var eventHubNameForResponses = "responses";
// ToDo: Provide consumer group name
var consumerGroup = "consoleapp";
// ToDo: Provide connection string to your event hub namespace
var eventHubConnectionString = "";
// ToDo: Provide connection string to your storage account
var storageConnectionString = "";
/*
* Azure setup notes:
* 1. Remember to create 3 event hubs in Azure:
* add-command
* multiply-request
* responses
*
* 2. Remember to create 'consoleapp' group consumer in each event hub.
*/
// Create message bus
IMessageBus messageBus = new MessageBusBuilder()
// Pub / Sub
.Publish <AddCommand>(x => x.DefaultTopic(eventHubNameForAddCommand)) // By default messages of type 'AddCommand' will go to event hub named 'topica' (or topic if Kafka is chosen)
.SubscribeTo <AddCommand>(x => x.Topic(eventHubNameForAddCommand).Group(consumerGroup).WithSubscriber <AddCommandConsumer>())
// Req / Resp
.Publish <MultiplyRequest>(x => x.DefaultTopic(eventHubNameForMultiplyRequest)) // By default messages of type 'AddCommand' will go to event hub named 'topica' (or topic if Kafka is chosen)
.Handle <MultiplyRequest, MultiplyResponse>(x => x.Topic(eventHubNameForMultiplyRequest).Group(consumerGroup).WithHandler <MultiplyRequestHandler>())
.ExpectRequestResponses(x =>
{
x.Group("consoleapp");
x.ReplyToTopic(eventHubNameForResponses); // All responses from req/resp will return on this topic (event hub)
})
.WithSerializer(new JsonMessageSerializer()) // Use JSON for message serialization
.WithDependencyResolver(new LookupDependencyResolver(type =>
{
if (type == typeof(AddCommandConsumer))
{
return(new AddCommandConsumer());
}
if (type == typeof(MultiplyRequestHandler))
{
return(new MultiplyRequestHandler());
}
throw new InvalidOperationException();
}))
.WithProviderEventHub(new EventHubMessageBusSettings(eventHubConnectionString, storageConnectionString)) // Use Azure Event Hub as provider
//.WithProviderKafka(new KafkaMessageBusSettings("<kafka-broker-list-here>")) // Or use Apache Kafka as provider
.Build();
try
{
var addTask = Task.Factory.StartNew(() => AddLoop(messageBus), TaskCreationOptions.LongRunning);
var multiplyTask = Task.Factory.StartNew(() => MultiplyLoop(messageBus), TaskCreationOptions.LongRunning);
Console.WriteLine("Press any key to stop...");
Console.ReadKey();
_stop = true;
Task.WaitAll(addTask, multiplyTask);
}
finally
{
messageBus.Dispose();
}
}
static void Main(string[] args)
{
// ToDo: Provider your event hub names
var topicForAddCommand = "add-command";
var topicForMultiplyRequest = "multiply-request";
// Note: Each running instance (node) of ConsoleApp should have its own unique response queue (i.e. responses-1)
var topicForResponses = "responses";
// ToDo: Provide consumer group name
var consumerGroup = "consoleapp";
var responseGroup = "consoleapp-1";
// ToDo: Provide connection string to your event hub namespace
var eventHubConnectionString = "";
// ToDo: Provide connection string to your storage account
var storageConnectionString = "";
// ToDo: Ensure your Kafka broker is running
var kafkaBrokers = "localhost:9092";
/*
* Azure setup notes:
* Create 3 event hubs in Azure:
* 1. 'add-command' with 'consoleapp' group consumer
* 2. 'multiply-request' with 'consoleapp' group consumer
* 3. 'responses' with 'consoleapp-1' group consumer
*/
// Create message bus using the fluent builder interface
IMessageBus messageBus = new MessageBusBuilder()
// Pub/Sub example
.Publish <AddCommand>(x => x.DefaultTopic(topicForAddCommand)) // By default AddCommand messages will go to event hub named 'add-command' (or topic if Kafka is chosen)
.SubscribeTo <AddCommand>(x => x.Topic(topicForAddCommand)
.Group(consumerGroup)
.WithSubscriber <AddCommandConsumer>())
// Req/Resp example
.Publish <MultiplyRequest>(x =>
{
// By default AddCommand messages will go to event hub named 'multiply-request' (or topic if Kafka is chosen)
x.DefaultTopic(topicForMultiplyRequest);
// Message key could be set for the message
x.KeyProvider((request, topic) => Encoding.ASCII.GetBytes((request.Left + request.Right).ToString()));
})
.Handle <MultiplyRequest, MultiplyResponse>(x => x.Topic(topicForMultiplyRequest) // topic to expect the requests
.Group(consumerGroup)
.WithHandler <MultiplyRequestHandler>())
// Configure response message queue (on topic) when using req/resp
.ExpectRequestResponses(x =>
{
x.Group(responseGroup);
x.ReplyToTopic(topicForResponses); // All responses from req/resp will return on this topic (the EventHub name)
x.DefaultTimeout(TimeSpan.FromSeconds(20)); // Timeout request sender if response won't arrive within 10 seconds.
})
.WithSerializer(new JsonMessageSerializer()) // Use JSON for message serialization
.WithDependencyResolver(new LookupDependencyResolver(type =>
{
// Simulate a dependency container
if (type == typeof(AddCommandConsumer))
{
return(new AddCommandConsumer());
}
if (type == typeof(MultiplyRequestHandler))
{
return(new MultiplyRequestHandler());
}
throw new InvalidOperationException();
}))
//.WithProviderEventHub(new EventHubMessageBusSettings(eventHubConnectionString, storageConnectionString)) // Use Azure Event Hub as provider
.WithProviderKafka(new KafkaMessageBusSettings(kafkaBrokers)) // Or use Apache Kafka as provider
.Build();
try
{
var addTask = Task.Factory.StartNew(() => AddLoop(messageBus), TaskCreationOptions.LongRunning);
var multiplyTask = Task.Factory.StartNew(() => MultiplyLoop(messageBus), TaskCreationOptions.LongRunning);
Console.WriteLine("Press any key to stop...");
Console.ReadKey();
_stop = true;
Task.WaitAll(addTask, multiplyTask);
}
finally
{
messageBus.Dispose();
}
}
