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Let's go back to our joint order service and build our two publishers for the events that we just created.

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So inside the SRT directory I'll make a new folder of events.

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Then inside there I'll make a new folder of publishers and side that I'm going to make two files one

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I will call order created publisher and Order cancelled publisher.

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Let's start off first with our order created publisher.

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So remember what we need to import at the top the file we need to make sure we get our publisher base

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class.

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We also need to get our order created event so we'll get our publisher order created event.

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And we also need that subjects them as well so we can specify the subject we should use when we publish

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this event.

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So subjects and I'll get all that from my company module

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then inside of here we will export a new class called order created publisher that's gonna be extending

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our publisher base class.

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And remember this is a generic class where we stick in the event that we're going to eventually emit

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so order created even were then told right away by typescript that we need to define that abstract property

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so we could say that we're going to have a subject property we're going to annotate this properties

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type as subjects dot order created and the value for it will be subjects dot order created and that's

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very much it.

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Now any time that you want to publish an event saying that an order has been created we would write

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out something like new order created publisher.

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Remember we will throw in our Nats client and then we would call publish and inside this object right

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here we'd pass all of our different data properties.

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So in our case that would be the idea of the order the user I.D. the status expires at and then some

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information about the ticket itself.

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That's pretty much it.

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Let's not repeat the same process for the order canceled publisher as well.

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So here's order it canceled publisher at the top.

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We will once again do a import for subjects publisher and order canceled

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from the common module will export a class of order canceled.

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Publisher and that's going to be extending our publisher base class throw in our order a canceled event

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and then once again we need to define the subject property on here.

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So our subject will be of type subject subjects.

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Order canceled and its value will be subject Scott.

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Order canceled.

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And that's it.

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Well that's all we have to do to define a publisher inside of here.

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So this is looking pretty good.

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Let's take a pause right here.

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We're going to go back over to our two root handlers in the next video and make use of these two publishers

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to make sure that we publish some events at the appropriate time.