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In this step we will investigate much more about world trade.



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How do I use bring good actuator where you seem just like everything else it's getting booed using an



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actuator is also really very simple.



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All that I need to do is good for America.



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And you have guessed it right.



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I just need to add stuff for actuator.



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So I'm copping the start of a verb and changing the starter name to actually after that it implies that



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I didn't start to fracture it.



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So what does the actuator bring in.



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Actually it actually brings in a lot of monitoring around your application.



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So in actuator you'd be able to read a lot of data about the application.



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Let's say you want to see water the beans that are configured.



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You want to see how or the configuration has worked you want to see how many times the specific services



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called you want to see how many times a specific service has failed.



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All that kind of stuff you can check in your actuator and all that I need to do to enable that is in



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something called an actuator in springboard start the actuator actually exposes a lot of the rest services



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and these services are compliant with the standard called had standard.



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And we would use a browser so that we can browse through the data which is provided by these services



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and then see for file browser it spring bitterest help browser.



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So it's spring data rest Hal.



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So you can take the project up the group ID should actually be data it offspring from a data spring



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that at least has a browser.



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So once we add dependency for that the whole browser would be configured among our dependencies.



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Now you can see all the dependencies in the independent It's been a good start actually it has been



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good actually to spend the rest have a browser that's cool.



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One of the important things to remember is that the actuator you are Lil's have been changing quite



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a lot across spring board release this spring boot one dart X the UL and was local host 88 slash actuator



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and later in the earlier versions of spring.



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Two point zero point zero the milestone is this it was last 88 slash application.



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No.



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Again we are back to look closely at the slash actuator.



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So this is the you are going to launch the actuator.



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I mean this is after two point zero point zero dot release the released localhost ADHD slash.



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Actually it does not work and probably you can you know close ADHD Sless application right once you



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type in local host ADHD Slish actuator.



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This is what you'd be saying if you're using anything rated to point to the point really as you'd see



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three Juelz coming in.



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Right.



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So these are the helmet and the informed.



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So if I click help you'd see they held up the applications up and running.



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That's cool.



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Right.



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And the other one is the Imphal there's not a lot of info here right now if there is a lot of stuff



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that actuator for whites to enable that you'd need to configure but how do I do that the way you can



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with that is you are piggishness properties and type in management endpoint of web exposure that include



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a sequel to the sequel to what we are doing in here is we are enabling the Verba exposure.



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So the exposure or DP of all the management in points.



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One of the important things to remember is when you enable a lot of tracking a lot of auditing.



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What would happen is there would be a performance impact as well.



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One of the recommendations is to identify which of the things that you would want and only enable those.



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But for now we are taking a shortcut.



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We are enabling everything management points web exposure that include physical stuff all the things



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you would already know is the fact that if I type in controlled space or comment space you see a drop



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coming in.



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This is because of something called Spring tools plug in.



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So theres an eclipse plugin called Spring tools so you can see that I can see what develop properties



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it all to validate the values of these properties and things like that we configured management or the



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endpoints that we have got exposure to not include is just to save it and restart your application to



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make use make sure that you stop and start your application and go and refresh the actuator.



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You would see that now there are many more articles which are present in here.



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So you would see a lot of RL which are coming up in here.



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The other thing we can type in this localhost ADHD we have already added in the whole browser.



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Let's zoom out a little bit.



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So we added in the hull brothers so if you type in localhost ADHD you go to the browser and we can use



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help browser to browse through the actual as I can type in slash actuator in here.



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So all that I need to do is type in slash actuator that you are in for the actual in here and I can



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start looking through all the things related to actuator directly from here.



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Let's look at a few of these things that the actuator is exposing the oddity Ventas related to security.



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Or did you want to show that users were properly validated.



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How many people failed the authentication and all that kind of stuff.



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Beans is an interesting thing.



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And picking beans they Sutro all disappearing beans that are configured right.



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Praying is a dependency management playbook and it manages all the beant it creates all the components



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for you and you can look at all the beans that spring has created for you.



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You can also check the health of the application its up.



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Conditions is another interesting thing as we have this because it knows being good is all about auto



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configuration.



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There is a lot of stuff that to bring boot or to configure conditions so it exposes the positive matches



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which are all the conditions that matched as well as if you search for negative matches the conditions



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which did not match.



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So it would draw a list of bins which are configured which are not contrie good and all that kind of



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stuff.



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You can also get the details of configuration properties.



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And we don't mind loggers which are on pre-code You can also get them to read them.



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And also you can get a few metrics as well so if you go to the metrics I can see a list of metrics which



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are valid.



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So let's say I would want to find out how much memory is used.



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So I can say I can copy this JVM memory used and add it in here.



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So slash GBM maybe got used to go.



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You would see the value of the amount of memory that is being used.



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The same thing can be done with other metrics as well.



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So if I go back to the actual metrics you can see that there are a wide variety of metrics that are



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being exposed in here C.P usage and all that kind of stuff.



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If I go back to the actuator I can also see this stuff do to us that is an interesting thing called



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HTP trees which should all the requests that were executed.



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So it shows that this is a request which is coming in.



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Somebody tried to access the actuator.



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This is the response which when bag the time taken is so and so.



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So you can see all the details of the previous requests that were executed.



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The important thing is to remember that this would have a performance impact.



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Right you cannot enable it in protection.



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This is useful to raise a few requests but obviously you would not want to enable it to decrease in



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production for all that it was the last one which is present in here is the mappings mappings shows



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all the different things that are mapped to our eyes right over and over.



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We are creating a web application or a web service.



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We are mapping a lot of it when we are adding the dependency on actuator we add a few others as well.



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So you can see all the mappings in here.



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The idea behind this week was to quickly give you an overview of what are all the things you can do



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with actually if some of the information you've seen here is complex and you are finding it difficult



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to understand.



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No problem at all.



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The most important thing to understand is in future if you need any such information there is one place



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you can go to that actuate and then the next step.



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Barbara.