This project demonstrates the implementation of a serverless CRUD (Create, Read, Update, Delete) REST API using AWS Lambda, API Gateway, and DynamoDB. The infrastructure is provisioned and managed with Terraform, and the Lambda functions are written in Node.js 18.

• Serverless CRUD REST API with AWS Lambda, API Gateway, and DynamoDB
  • Table of Contents
  • Prerequisites
  • Project Structure
  • Installation
  • Usage
  • Testing

Before you begin, ensure you have the following tools and accounts set up:

• Node.js (version 18 or later)
• AWS Account
• Terraform (version 0.12 or later)
• AWS CLI

The project is organized into the following directories:

• modules/: Contains Terraform modules for infrastructure provisioning.

  • dynamodb/: Terraform module for DynamoDB.
  • api_gateway/: Terraform module for API Gateway.
  • lambda/: Terraform module for Lambda functions.

• infra/: Contains the main Terraform configuration files.

  • main.tf: The main Terraform configuration file.
  • variables.tf: Variable definitions.
  • outputs.tf: Output definitions.

• src/: Contains the source code for Lambda functions.

  • functions/: Organized by CRUD operations (create, read, update, delete).

• tests/: Contains unit tests for Lambda functions.

1. Clone the repository:

   git clone <repository-url>
   cd my-serverless-api

2. Install Node.js dependencies:

   cd src/functions/create
   npm install
   
   cd ../read
   npm install
   
   # Repeat for update and delete directories

3. Install Terraform dependencies:

   cd modules/dynamodb
   terraform init
   
   cd ../api_gateway
   terraform init
   
   cd ../lambda_functions
   terraform init

1. Update the variables.tf files in the modules/api_gateway, modules/lambda, and modules/dynamodb directories with your specific configuration.

2. Deploy the infrastructure using Terraform:

   cd infra
   terraform apply

3. Update the Lambda function code in the src/functions/ directory as needed.

4. Redeploy the Lambda functions:

   cd infra/lambda_functions
   terraform apply

Run unit tests for Lambda functions:

cd tests
npm install
npm test