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In this video, we are going to update a lambda function with additional dependencies using a cli.

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In the last video, we have already the update on the function quote, but this time we will update

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with dependencies.

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We didn't add any dependencies into our Node.js lambda function yet, so let's see how we can manage

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it.

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If our lambda function depends on libraries other than the SDK for JavaScript, we can use MPM to include

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them in our deployment package.

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We should ensure that the Node.js version in our local environment makes the Node.js version of our

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function.

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So basically we will use NPM package management tool for installing dependencies in our Node.js lambda

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function and deploy with these dependencies.

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As we know that in Node.js application, once we add any external package with using the NPM install

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command, this will create package that JSON file and note modules folder in order to store these external

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library resources.

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So that means we should zip all these files when deploying lambda function to the lambda.

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Let's write down step by step what we are going to do in this video.

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We will install required dependencies into node modules folder.

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After that, we will zip function code update function code with the CLI.

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And lastly, we will invoke updated lambda function with using SQL Command.

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So we have already created my function to and quotes are stored, which is coming from the last section

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into the index JS file.

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If you can open the we just read your code, you can see in here we will follow this step and we have

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deployed my function to with this index CSS code.

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Now we can install libraries in the node modules directory using the NPM install command.

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So we can think that in this lecture 53 folder, this is the lambda function code and dependencies should

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be it should be included under the this folder name.

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And we can think that this lecture folder is our lambda function folder and we use Node.js runtime.

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So you can think these are Node.js folder of projects which including indexes package JSON file and

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node modules folders which including the dependencies.

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Okay, let's get started.

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If you come to command JS, we will start with the install required dependent dependencies into our

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function folder.

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So I'm going to install some of the kits, which is the x ray SDK package, which is for the tracing

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or invocations.

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But I'm using this package for an example and show how we can use dependencies in the lambda functions.

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So please copy this command and locate the folder lecture 53 and paste this command into the PowerShell

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or your command line and hit enter.

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So this creates a folder structure that's similar to our Node.js applications.

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You can see that under the lecture 53, we will have no notice and now it is creating package JSON file.

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So these three files are created from our NPM install command.

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And this folder is because Node.js function and Node.js project.

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So see that no modules added the x ray package.

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If you come here you can see the x ray package and required package in here.

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And if you also check the package JSON file, you can see that there is a dependencies which is a x

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SDK.

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And here is the version number.

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Okay.

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Very good.

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Now the second step is if you follow the second step, the second step is a function zip to function

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quote, zip archive.

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So if you scroll down and see the follow the second step, we have several options.

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You can see in here in the Windows Manual this time I have to follow the manual version because this

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is important.

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We should follow the manual zip dependencies cannot be moved we to compress command.

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This command is not working for the archiving all the normal dos and under these packages.

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So that's why I have to follow manual way.

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You can also follow zip command from the Mac users, but Windows users, the compressed archive is not

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working, so that's why we should follow the manually.

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Zip.

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This folder is a function.

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So select indexes.

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And package JSON files and Node.js modules.

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And we will zip this file with our application when we are making zip file of these indexes and package

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JSON files.

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The important thing is you shouldn't have subfolder into the function zip file when extracting.

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It should have these files as expected.

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So let me show how we can do that.

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So for example, right click and go to the indexes.

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Now I'm going to select this file's indexed JS package JSON files anomalous right click sent to compressed

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zip folder.

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Okay.

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This will be the function.

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Zip file.

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If you double click this function as you can see that these folders has now any folder folders are directly.

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You can see under the zip file indexes package JSON and this should be located in the root folder structure.

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So this is important when you are zipping an archiving or Node.js, lambda functions.

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Okay, now we have finished the second step, but before update the function code, let's check our

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existing code on the mission console.

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If you go to lambda function, if you come to my function to uncheck the code, this is the our latest

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code and there is only one index case file.

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But when we are updating this code we should see the package Jasons and Node.js modules in here.

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So that means we will update the code with additional dependencies.

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Okay, let's come back to our we used to do code and now I'm going to go to the third step, come to

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command text and see the third step, which is the update function code.

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In order to update function code, you can see in here we will use update function called select command.

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Passing the function name and zip file is you remember that we have a function, that zip file which

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includes the all required index and package files in here.

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So that's why we can easily update our code, copy this command and paste into the your command window

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and hit enter.

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So this will be update our code with additional dependencies.

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Yes, you can see that there is a success response, including the function definitions.

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And if you go back to the our management console and if you refresh this page, we will see that our

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function will be updated with the Node.js modules.

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Okay.

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As you can see, that note modules and package JSON file is coming as expected in here.

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So basically we have updated successfully and see the difference on the management console.

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You can see the folder structure comes appropriately under the my function to I have no modules, indexes

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and package JSON files and in the package JSON file you can see the x ray SDK dependency in our application.

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And the last step, if you come back to our command window in the last step is invoke updated lambda

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function code with the click commands.

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In order to do that, we have also JSON file in the event JSON file, we have number one and number

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two and we are following the same steps.

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If you scroll down, you can see in here we are going to invoke my function to with this event JSON

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object and if you paste command in your command window, hit the enter.

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You can see the this quote is 200.

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If you go to the response JSON file, you can see that the successful body response comes properly in

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our application.

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Okay.

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This was multiply our function and we have multiply with the number one and number two and calculate

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total number.

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As you can see that we have updated our lambda function with additional dependencies using a double

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click commands.