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In the last video we discussed the pros and cons of option number three.

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So this is the option that we're going to go with.

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There's a lot of changes we need to make in several locations to implement this entire flow so we need

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to make changes to the comment service and the query service.

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We also need to create the moderation service.

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I think we should get started by creating the moderation service for right now.

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It's a good place to get started.

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We're just going to worry about putting together a little bit of boilerplate for the project in this

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video and in the next video we'll start to add in all these additional events and add in some code to

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handle them as well.

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So let's get to it.

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We're going to create this new moderation service to get started.

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I'm gonna flip back over to my terminal.

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I'm going to open up yet another terminal window which I've already got right here inside my blog.

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Project directory and inside there I'll make a new folder called moderation I'll then change into that

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directory.

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I'm going to maximize this terminal window really quick as you can see this very easily.

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All the other terminal windows are still running.

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I'm just using a hotkey to maximize that 1 window inside of you're going to generate a new package JS

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on file with NPM in it Dash y and then as we've done several times before we're going to install a couple

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of dependencies so I'm going to get access express node Mohn.

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And in this case we do not need cause because we are not going to have our front end application make

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any direct request to this moderation service.

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So the course module not required this time around so I'm going to install that stuff and after that's

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all done.

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There we go.

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I'm going to pop that kernel window back into this tile.

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We're not going to start up the server just yet.

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Let's go and write a little bit of code and I'll come back over and start up that additional service

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so I can go to my editor here's the new moderation directory inside there I'll make a new file called

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index dot J.S. and then at the very top let's add in some different require statements so I'm gonna

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get express

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I'm gonna get body parser

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and I'll get access

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then once again create a new express application and wire up the body parser middleware.

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So I'll make sure I call Jason as a function all right.

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So what does this service really need to do.

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Well all this service does is watch for events.

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It's just gonna watch for that event we mentioned so common created whenever we see come and created

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the moderation service is going to need to emit the comment moderated event.

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So we really just need all we need inside this thing is one root handler just a single root handler

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for that slash events end point that we already set up previously inside of comments query and our post

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service as well.

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So inside of here we're going to add an app dot post or events will then take our rec and rez like so

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we'll come back to that root handler in just a moment.

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First let's make sure that our app actually starts listening on some port now at this point in time.

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We've got several different ports in use so as a reminder we've got four thousand four posts 1001 for

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comments or thousand to four.

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What is this.

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The query service and we'll use 4000 in three for moderation.

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So we will do an app.

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Listen four thousand three and inside of you I'll do a console log listening on four thousand three

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okay.

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Before putting together any implementation on this host event and post root handler right there let's

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set up our package not just on file with the script and just make sure that we can run this thing successfully

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at our terminal.

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Here's my package that Jason File I will delete that existing test script and replace it with a start

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and we'll do the Woodman index dot J.S.

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Okay that looks pretty good let's go and run this project so I'll go back over my terminal once again

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I'm going to find that terminal window that's going to be in charge of running our moderation service

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there it is right there and inside there I'll do NPM start okay there we go.

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So we've now got many different services running for our application.

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Definitely.

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Hey you know this is of course about micros services.

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So yeah we're going to create a lot of services just understand how to create them all and get them

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all working together.

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Look it looks like that is running on port four thousand three and we've got a good start to this moderation

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service.

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Let's take a quick pause right here.

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When come back next video we're going to start to add in some implementation for the events handler

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right here and make sure that any time we see an event of type comment created we do some moderation

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on it.

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And then eventually emit this comment.

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Moderated event in turn.

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So a quick pause.

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Take care that just a moment.