File Storage App on AWS CDK, S3 and CloudFront

This is a sample AWS application which uses AWS CDK to generate Infrastucture with TypeScript runtime. The application is File Storage solution which uses CloudFront to efficiently upload & cache files to and from a S3 storage. It creates a CDK app with an instance of a CloudFormation stack named config.PROJECT_NAME-Stack. Related blogpost can be found here

Getting Started

AWS Account Setup

Before deploying the stack make sure AWS credentials are setup correctly. Below commands setup AWS environment. or run aws configure for environment setup.

On the CLI set these environment variables

• export AWS_DEFAULT_REGION={aws-region}
• export AWS_ACCESS_KEY_ID={access-key}
• export AWS_SECRET_ACCESS_KEY={secret-key}

Config file

Update the Project name and environment by modifying config.json file before deployment

Deploying the stack

• npm install install the dependencies
• npm run build compile typescript to js
• cdk deploy deploy this stack to your default AWS account/region

After the stack is deployed

Uploading Files

Once the application is deployed Distribution URL will be displayed on the CLI. To upload the file, use the below command with the correct URL:

curl --upload-file "test.txt" "{Distribution_URL}" -H "x-amz-content-sha256: UNSIGNED-PAYLOAD" -H "x-amz-acl: bucket-owner-full-control"

Two headers x-amz-content-sha256 and x-amz-acl are requierd when uploading the file. *To make it Secure, use Signed URLs.

Downloading Files

Files can be accessed on the same path as it was uploaded to. {Distribution_URL}/path/test.txt

License

This code is released under the MIT license. See LICENSE for details.