Meeting Room Booking Facility with WebSockets in Spring Boot App

WebSocket Protocol Setup

Broker Backed Messaging

• StompEndpoint - /ws-prototype
  • StompClient is created with above endpoint, means WebSocket connection is established.
• In Memory MessageBroker
  • Application DestinationPrefixes - /bot/booking
    • Any messages that come to above prefix will be routed to @MessageMapping(“/message/{uuid}”) annotated methods
      • @Payload ChatMessage
  • SimpleBroker - /meetingroom
    • @SendTo("/meetingroom/{uuid}”) will carry the message (whatever method returns) back to the clients, whoever subscribed to /meetingroom/{uuid}

WebSocket Event Listeners

• Log when a new client is connected and disconnected
  • Connect
  • Disconnect

Database and Service

Database Schema Design

• H2
• Init Script For Reference Data

Service Layer Should Do Below (Implemented in DSL integration)

• Available Meeting Rooms
• Available Timings For Selected Meeting Room
• Book Meeting Room
• Release Meeting Room (pending)

Environment Setup

Dockerizing (From Local Machine)

• Create a Bootable Jar

  cd book-a-meeting-room
  ./gradlew clean build

• Create a Docker Image (from Dockerfile)

  docker build --no-cache -t book-a-meeting-room-app .

• Run The Application

  docker run -p 9000:8080 book-a-meeting-room-app

  Application Should be Running at http://localhost:9000/

Deploy to Elastic BeanStalk

• Simply deploy the jar file or docker image

Deploy thru AWS CodePipeline

• CodePipeline to pickup from Github