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In this video, we are going to update a lambda function code using the commands.

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So in this video we have several steps to update, deploy and invoke lambda function.

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Let me right time step by step to do this.

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The first one is the lambda function code with the updated one and the second step is zip function code

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and the third step is update lambda function with to select commands and the last step is invoke updated

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lambda function with the commands.

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Okay, let's get start and follow these steps.

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Please open the Visual Studio code and create a new folder and we will follow these four steps in this

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video.

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So the first step is develop lambda function code.

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In order to do that, I'm going to create a new file which is the index that JS file and in the Indexer

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JS file, I'm going to update our existing code if you remember that our existing code only logging

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incoming event and return back to the hello world.

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But this time I'm going to get even that number one and number two and multiply these numbers and return

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back to the total number in the body of the response of these methods.

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So this is the updated function.

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In our example, we basically expect number one and number two parameters into incoming event, JSON

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object and return back the calculated result to these numbers in the body of the response.

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Okay.

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Now I'm going to update a lambda function code.

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So here you can see that we are going to second step, which is the zip function code.

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In order to zip our function code, we have three ways we can use this zip or compress archive commands

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or we can do it manually for archiving our updated code and following the second one.

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Since we have only one index file, I can use compress archive file.

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In order to do that, I'm going to open a new terminal and.

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Go to record lectures.

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And now I'm going to compress archive command indexes as a function of zip.

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Hit the enter and see that function.

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That zip is created successfully.

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And now in the third step we are going to update lambda function with using a select commons for that

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purpose.

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Update function code in here and here you can find the required a SQL Command.

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This time I'm going to use a Lambda Update function code with passing function name and zip file archive

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file.

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Okay.

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Please copy this line of code and paste in here and this will be update my existing code.

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Here you can see the result is successfully updated and now we can check the update code from the management

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console to verify our change reflected on lambda function code or not.

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Please go to lambda functions on management console.

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Open the my function to and come to code window.

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You can see that in here.

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We have updated code is deployed successfully, so we have verified our function is updated successfully.

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Now the last step is invoke our updated lambda function with the CLI.

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So if you scroll down under the text file now I'm going to invoke our updated lambda function for that

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purpose.

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First of all, it is good to create event JSON file, so let me create even JSON file under the lecture

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52 and under the event JSON file.

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This time I'm going to create a two parameters.

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The first one is number one and one is number two, because our function is required, these number

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one and number two in order to multiply and return back to body statement.

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So that's why I have created this JSON object, which including the number one and number two.

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So this is the numbers, random numbers that you can define in here after we have created the event

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JSON file, now we can ready for the invoke our lambda function, which is even just an object.

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If you scroll down you can see and find these lambda IMO command in order to invoke our function with

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these events.

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An object in the same directory you maybe you remember we should specify the cli binary format and pasting

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the payload as a file of the event.

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JSON file.

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Copy this command and come to the command window.

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And paste in here and hit enter.

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So as you can see, that status quo is 200.

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So that means we have invoked synchronously and successfully our function.

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In order to see the result, we should check the response.

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That JSON object response is created under this lecture folder and open this file and see the response.

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So code is 280 is the description is said that the total is of three and four is 12.

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So that means multiply successfully and return back to successfully.

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

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total number.

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We can also verify lambda execution from the cloud which logs if you open our management console, go

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to monitor and we include cloud logs.

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We can verify from the latest log stream.

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You can see that our incoming event is number one and number two, and we return back to the information

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with multiplying these two numbers.

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As you can see that we have followed and successfully finished these four steps, the will of Lambda

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Code to update one zip function code, update lambda function code with a double click command.

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And lastly, we invoke the updated Lambda function code with using a double click commands.