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Launch this lab in the IP Lab Portal, then follow the steps below in the AWS console. Open IP Lab Portal

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Overview

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Lab Details

  1. This lab walks you through the steps to create an integration between Lambda and API Gateway
  2. You will practice using Amazon API Gateway.
  3. Duration: 45 minutes.
  4. AWS Region: US East (N. Virginia) us-east-1.

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Introduction

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Amazon API Gateway

  • Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale.
  • APIs act as the front door for applications to access data, business logic, or functionality from your backend services.
  • API Gateway handles all the tasks involved in accepting and processing up to hundreds of thousands of concurrent API calls, including traffic management, CORS support, authorization and access control, throttling, monitoring, and API version management.
  • Using API Gateway, you can create RESTful APIs and WebSocket APIs that enable real-time two-way communication applications. API Gateway supports containerized and serverless workloads, as well as web applications.
  • AWS Lambda lets you run code without provisioning or managing servers. You pay only for the compute time you consume.
  • With Lambda, you can run code for virtually any type of application or backend service - all with zero administration. Just upload your code and Lambda takes care of everything required to run and scale your code with high availability. You can set up your code to automatically trigger from other AWS services or call it directly from any web or mobile app.

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Architecture Diagram

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Task Details

  1. Sign into the AWS Management Console.
  2. Create a Lambda Function.
  3. Create a new API.
  4. Create a Resource.
  5. Create a Method.
  6. Deploy the API

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Launching Lab Environment

  1. To launch the lab environment, Click on the Start Lab button.
  2. Please wait until the cloud environment is provisioned. It will take less than a minute to provision.
  3. Once the Lab is started, you will be provided with IAM user name, Password, Access Key, and Secret Access Key.
Note : You can only start one lab at any given time

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Lab guide

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Lab Steps

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Task 1: Sign in to AWS Management Console

  1. Click on the Open Console button, and you will get redirected to AWS Console in a new browser tab.
  2. On the AWS sign-in page,
  • Leave the Account ID as default. Never edit/remove the 12 digit Account ID present in the AWS Console. otherwise, you cannot proceed with the lab.
  • Now copy your User Name and Password in the Lab Console to the IAM Username and Password in AWS Console and click on the Sign in button
3. Once Signed In to the AWS Management Console, Make the default AWS Region as US East (N. Virginia) us-east-1.

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Task 2: Create a Lambda Function

  1. Navigate to the services menu at the top, then click on Lambda under the Compute section.
  2. Click on the Create a function button.
    • Choose: Author from scratch.
    • Function name: Enter whizfunction
    • Runtime: Select Python 3.12
    • Role: In the permissions section, choose Use existing role.
    • Enter the Role name as AWSLambdaEdgeExecutionRole<random.numbers>
      • Click on Create function
  3. Once the Lambda Function is created successfully, it will look like the screenshot below:

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Task 3: Create an API

  1. Navigate to the services menu at the top, then click on  API Gateway  in the Network and Content Delivery section.
  2. Click on Create an API. (If gets started and is not visible), then click on Build in REST API and select Protocol as REST. (Close the pop up message for Create your first API,if it is present and ignore the error warning).
  3. Choose to create a new API as New API. Under settings, choose the API name WhizlabAPI**.** Leave other options as default and click on Create API.

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Task 4: Creating a Resource

  1. Once the API is created, select the API.
  2. Select Create Resource in actions.
  • Resource Name: Enter myawsapi
  1. Enter the resource name and click on Create Resource

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Task 5: Creating a Method

  1. Once you create a resource, click on Create Method. Select Get in the drop-down list of Method Type.
  2. Select the Integration Type as Lambda function.
  3. Enter the Lambda Function as whizfunction and choose the us-east-1 region. Click on Create Method
  4. Once the method has been created, your screen will look similar to the screenshot below:

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Task 6: Deploy the API

  1. Once the resource and the method have been created successfully, you can deploy the API.
  2. Click on Deploy API.
  3. Select the Deployment Stage in the drop-down as New Stage.
  4. Enter Stage Name: TestingAPI  and Stage description as Testing environment for my WhizlabsAPI.
  5. Click on Deploy.
  1. Once the API has been deployed, navigate to Stages. You will be able to see the following:
  2. If you are getting the below permission error, ignore it. It is not required for this lab.
  1. Copy the URL under the Invoke URL and paste the URL in the search bar of a browser tab.
  2. Now add /myawsapi at the end of deploy URL and hit Enter.
  3. You will receive the GET request from the API. Here’s an example:
Do you know?
  1. API Gateway is a fully managed AWS service that enables developers to create, publish, and manage APIs for their applications. It acts as a front-door to your backend services, allowing you to securely expose your APIs to clients, handle authentication and authorization, and apply various transformations and optimizations.
  2. AWS Lambda is a serverless compute service provided by Amazon Web Services. It allows developers to write and execute code without provisioning or managing servers. A Lambda function is a piece of code that performs a specific task or handles a specific API request. It can be written in various programming languages and is triggered by events, such as an API request.
  3. Lambda integration in API Gateway refers to the process of connecting an API endpoint with a Lambda function. It enables API Gateway to invoke the Lambda function in response to incoming API requests, allowing the function to process the request, perform business logic, and generate a response.
  1. This will validate the resources in the AWS account and shows you whether you have completed this lab successfully or not.

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Completion and Conclusion

  1. You have successfully created a Lambda function.
  2. You have successfully created the API.
  3. You have successfully created the API Resource and Method.
  4. You have successfully tested the API.

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End Lab

  1. Sign out of AWS Account.
  2. You have successfully completed the lab.
  3. Once you have completed the steps, click on End Lab from the IP Lab Portal dashboard.

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What gets checked

When you press Check my work, the platform verifies each of these:
  • Create an AWS Lambda Function — Check whether a Lambda Function is created or not
  • Create a API Gateway — Check whether a REST/HTTP?WEBSOCKET API gateway is created or not
  • Deploy and Invoke REST API Gateway — Check whether a Rest API gateway is deployed and can invoke the URL or not