#Masstransit publish vs send windows#

We’ll have 4 command windows up and running when starting the demo at the end of this post so it’s good to have an easy means of identifying which window belongs to what.

#Masstransit publish vs send registration#

We’ll first make a slight change in the Main method of Program.cs:Ĭonsole.Title = 'This is the customer registration command receiver.' Ĭonsole.WriteLine('CUSTOMER REGISTRATION COMMAND RECEIVER.') We’ve also registered an IConsumer called RegisterCustomerConsumer when building the bus control. It currently listens to commands on the queue called. We also have a project called MassTransit.Receiver in our demo project. When a new customer is registered then we won’t publish all the details to the consuming parties. It has some of the same properties as IRegisterCustomer. Go ahead and insert the following event interface into the library: Our demo project has a M圜ompany.Messaging C# library where we already have a command-style interface called IRegisterCustomer. We know from the previous post and the MassTransit documentation page we referred to that an event name consists of a noun, which is the resource or the domain, followed by a verb in past tense that describes what happened to the resource. The event will be consumed by 2 receivers that the event publisher will not have any knowledge of. The goal is to publish a customer registered event from the register customer command consumer.

In this post we’ll extend our demo to publishing a message that can be consumed by multiple receivers. Our first example centred around sending a single command using a single queue. Instead, they are basic terminology in the world of messaging. Therefore commands and events are not some special C# language features in this case. Both are best encapsulated in an interface with get-set properties and separate naming conventions. The message type can by convention be an event or a command.

#Masstransit publish vs send how to#

We saw a very basic configuration of the bus control and how to register a consumer for a message type.

We managed to send a message from a publisher to a consumer using the MassTransit/RabbitMq client library. Thanks to Dru for clarifying some points for me.In the previous post we got our hands dirty and started coding a small demo application around MassTransit. I hope this is useful if you’re trying to get to grips with MassTransit. The subscription service is not involved at this point. When the publisher publishes a message, it sends the message down its outbound pipeline until it is intercepted by the subscriber’s endpoint and dispatched to the subscriber’s queue. I haven’t show this in the diagram either. The subscriber also adds a component to its inbound pipeline to listen for messages of the subscribed type. Note that the Subscriber also receives it’s own AddSubscription message back and adds itself to its outbound pipeline (not shown in the diagram). The publisher receives the AddSubscription message that was broadcast to all the subscription clients and adds the subscriber endpoint to its outbound pipeline.

#Masstransit publish vs send update#

SubscriptionService also adds the subscription to its list of subscriptions so that when any other services come on line it can update them with the list. When the subscriber subscribes to a particular message type, ServiceBus sends an AddSubscription message to SubscriptionService which in turn scans its list of subscription clients and sends the AddSubscription message to each one.

It too gets added to the subscription clients list. It also sends an AddSubscriptionClient message to the subscription service. The subscription service then adds our subscriber to its list of subscription clients. When our subscriber comes on line, it sends an AddSubscriptionClient message to the subscription service. When RuntimeServices starts up the SubscriptionService creates a list of ‘SubscriptionClients’. Let’s look at the sequence of events when RuntimeServices.exe, a subscriber service and a publishing service start up. Private void WritePipeline(IPipelineSink pipeline) Writer.WriteLine( 'OutboundPipeline: ') Writer.WriteLine( 'InboundPipeline: ') Public PipelineWriter(IServiceBus bus, TextWriter writer) Public class PipelineWriter : IPipelineWriter