Building Cloud Infrastructure with Ease: A Step-by-Step Guide to Creating S3 Buckets Using AWS CDK and TypeScript

Introduction

In the realm of cloud infrastructure, infrastructure as code (IaC) has emerged as a transformative approach, enabling the provisioning and management of cloud resources through code rather than manual configuration. Among the prominent IaC tools, the AWS CDK (Cloud Development Kit) stands out for its versatility and support for multiple programming languages like Python, Java, .NET/C# including the powerful and type-safe TypeScript. This blog post delves into the world of AWS CDK and TypeScript, providing a comprehensive guide to infrastructure automation with these powerful tools. To set up AWS CDK or to familiarize ourselves with the fundamentals of AWS CDK, we can refer to our previous post titled AWS CDK with TypeScript: A Comprehensive Guide.

In this post, we’ll walk through the process of creating an S3 bucket using AWS Cloud Development Kit (CDK) with TypeScript. AWS CDK allows us to define cloud infrastructure in code, making it easier to manage and deploy.

Steps to Create AWS s3 Bucket using CDK V2

Step 1:

Create a folder on the Local Derive
Open the folder in VSCode Editor
Open Terminal

Step 2: Create the app

Make a directory mys3Cdk (or any other based on our choice)
```
    mkdir mys3Cdk
    
```
Change directory with cd
```
    cd mys3Cdk    
```
Initialize the app by using cdk init command. Specify the programming language
```
   cdk init app --language typescript   
```

Step 3:

In the lib/mys3_cdk-stack.ts file

Import the modules/packages (All or specific Construct from the Module) for AWS services being created


    import * as lambda from 'aws-cdk-lib/aws-lambda' (example)

Step 4: Define Scope, Logical ID, and Props

Scope =this
Logical ID = Logical ID Name (Different from physical Id)
props – Add the attributes to create the Resources – AWS documentation or Editor code Complete


import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as s3 from 'aws-cdk-lib/aws-s3';

export class Mys3CdkStack extends cdk.Stack {
  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const s3DemoBucket= new s3.Bucket(this,'s3demobucket001',{
      bucketName:'demosbucket0123',
      versioned:true,
      publicReadAccess:false
    })
  }
}

Step 5: Build the app (optional)

Build (compile) after changing your code.

AWS CDK — the Toolkit implements it but a good practice to build manually to catch syntax and type errors.


    npm run build

Step 6: Bootstrap (One Time): Deploys the CDK Toolkit staging stack in s3 bucket.


   cdk bootstrap

Step 7: Synthesize an AWS CloudFormation template for the app.


   cdk synth

Step 8: Deploying the Stack (Deploy the stack using AWS CloudFromation)


   cdk deploy

After that stack will created in Cloudformation

Now we will go to s3 and check bucket has been created s3 bucket created using aws cdk

Step 9: Modifying the app

The AWS CDK can update deployed resources after we modify our app To see these changes, use the CDK diff command


   cdk diff

To examine variances within the existing stack, we are currently implementing some modifications. Presently, the S3 bucket that has been created includes the property publicReadAccess with a value of false. Our next step involves altering the publicReadAccess property to true. Subsequently, we will assess the discrepancies by executing the command cdk diff.

So now our code would look like the below


import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as s3 from 'aws-cdk-lib/aws-s3';

export class Mys3CdkStack extends cdk.Stack {
  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const s3DemoBucket= new s3.Bucket(this,'s3demobucket001',{
      bucketName:'demosbucket0123',
      versioned:true,
      publicReadAccess:true
    })
  }
}

After executing cdk diff command

Step 10: Destroying the app’s resources


   cdk destory

After executing cdk destroy command our Mys3CdkStack will be automatically deleted.