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Welcome to your Serverless Websocket Chat sample CDK TypeScript project

The cdk.json file tells the CDK Toolkit how to execute your app.

Project structure

├── infrastructure-ts                   # Infrastructure code via CDK(Typescript).
│   ├── bin                             # CDK App - Deploys the stacks  
│   ├── lib                             #
|   |   ├── auth-stack.ts               # Contains the Cognito Userpool
|   |   ├── database-stack.ts           # DynamoDB table definitions
|   |   ├── frontend-stack.ts           # Cloudfront distribution, S3 bucket for static hosting and additional resources
|   |   ├── rest-api-stack.ts           # ApiGateway REST API to support the frontend application
|   |   ├── websocket-stack.ts          # ApiGateway Websocket API for real-time communication
|   |   ├── observability-stack.ts      # CloudWatch Dashboard with custom metrics
├── UI                                  # Angular 12 Single Page Application (SPA)
└── ...

Deployment

  • Restore NPM packages for the project
    npm install
  • Bootstrap your AWS account as it's required for the automated Docker image build and deployment
    cdk bootstrap aws://{ACCOUNT_ID}/{REGION}
  • Synthesize the cdk stack to emits the synthesized CloudFormation template. Set up will make sure to build and package the lambda functions residing in the handlers directory.
    cdk synth
  • Deploy the CDK application
    cdk deploy --all

Useful commands

  • npm run build compile typescript to js
  • npm run watch watch for changes and compile
  • npm run test perform the jest unit tests
  • cdk deploy deploy this stack to your default AWS account/region
  • cdk diff compare deployed stack with current state
  • cdk synth emits the synthesized CloudFormation template