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We're now going to take a look at how we can delay processing of this job right here for about 15 minutes

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or so.

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I first want to tell you how we just add in any kind of arbitrary delay.

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We'll make sure that we put in the correct delay or essentially the 15 minute delay so to get started

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as a second argument to the add function I I'm to put in an options object inside of this.

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I'm going to provide a property called delay and yep this does exactly what you would guess.

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We're going to put in a number of milliseconds to whatever millisecond value we put inside of here that

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is going to be an extra delay that is added in before we receive this job back from readies to be processed

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by this process statement over here.

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Right now let's try adding in an arbitrary delay of 10 seconds we'll just hardcoded directly in so 10

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seconds in milliseconds would be 10000.

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Well put in 10000.

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Like so and then save this will then go through that process of creating a ticket once again and then

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creating in order for it.

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And then we'll make sure that we see a console log from our process statement after about 10 seconds

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or so so over in post man I'm going to once again create a new ticket.

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There's my ticket.

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I'll grab the I.D. I'll go back to where I'm creating and order and I'll update the ticket I.D. and

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the body of the order and then really quickly be first on this request off I am going to go backwards

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to my terminal and I'm going to clear this thing out.

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If you're on Mac OS you can hit command K and it should clear out your terminal window.

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So this is just gonna make it a lot easier to see that 10 second delay.

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So I going to send this off I'm then going to very quickly flip back over my terminal and hopefully

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we will see about 10 seconds pass.

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OK.

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Here we go.

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So going to click back over let's see all my events.

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I also see that expiration received that as well.

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And then after about 10 seconds or so I'm on there we go left 10 seconds in the future.

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We then see that console log.

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All right.

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That's it pretty straight forward for adding in that delay.

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Not the worst thing in the world.

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Now here's where the real challenge comes in.

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We need to somehow figure out how to put in a very precise delay right here.

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How are we going to do that.

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No we want to be about 15 minutes or so.

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But what we really have available to us is the current time the time at which we receive this incoming

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data event and then inside this data object right here.

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You'll recall that we've also got a timestamp of expires at that is when we want to expire or essentially

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process this job right here so we need to calculate a time from right now the time at which we are running

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this function to the timestamp that is list inside of expires at will to do so.

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It's just going to require a little bit of knowledge of the javascript Date object right above the ad

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statement.

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We're going to add in fonts delay and this is going to be new date we're going to stick in this thing.

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Data dot expires at the we'll call get time on it.

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That is going to give us a time in milliseconds we'll see some actual console logs of what these values

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are.

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Let's just write out some more code first there was a check from that new date not get time.

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That's the current time.

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So this should give us the difference between this time out at some point in the future or the expires

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at time and the current time right now right after that just for logging purposes I'm gonna put in a

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console log of waiting this many milliseconds to process a job and then I'll put on delay like some

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and then I'll make sure that I make use of delay rather than the hardcoded at 10000 milliseconds.

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Let's save this and we're gonna test this out one more time.

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Now do you remember that we are hard coding that exploration I believe to be 15 minutes right now.

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We can go back over to our order service and take a look at the root handlers specifically the new rabbit

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handler.

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That's where we decided on what that expires was going to be the expiration.

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And we had set the actual expiration time up here.

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And so it looks like yep we do in fact have 15 minutes just to make this a little bit easier to test.

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Let's kind of round this down a little bit.

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Let's turn down to just one minute.

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Right now it's going to put in one time 60 I'll then say that I'm gonna make sure that I save the order

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create the listener and then we'll go give this thing a very quick test.

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So once again back inside a plus man again we're gonna create a new ticket to grab that things I.D.

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then create an order but first stick in the updated ticket I.D. I'll go and update or clear out my terminal

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really quickly once again and I'll send that off and now we should see waiting this many milliseconds

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to process the job and we see a just under 60 milliseconds that's just as mean as 60000 milliseconds.

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That's just about just under just ever so slightly under 60 seconds or one minute which is exactly what

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we expect.

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So we're essentially just gonna sit around for a minute and after one minute we should see that console

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log that says I want to emit the expiration complete event.

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Naturally I'm not going to make you wait a minute in this video.

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So just pause right here come back the next video and just make sure we see that console log up your.