reactive-app-demo

Assumptions

1. There are two services involved.
2. One for receiving the booking requests, which I call the booking-service app and,
3. One for processing the payment for a booking request, which I call the payment-service app.
4. If the user has enough money in his/her account, the payment-service will provide an approved or rejected status in the response. This response is sent back to the booking-service for approving or rejecting booking reservations.

Build and Test

./00-build

This script will run the unit tests and build the Docker images if the tests pass.

Running the Services

docker-compose up

This will run the Docker containers: mongodb, payment-service, booking-service

The payment-service app

The payment-service stores information regarding the user's account balance. This service is initialized with users for testing which can be viewed by a PostMan or curl.

GET: http://localhost:8081/users

Response:

[
    {
        "id": "a675a759-54dd-44d1-9fd1-76bd916a4239",
        "email": "jolly.jae@gmail.com",
        "firstName": "Jolly",
        "lastName": "Jae",
        "balance": 7000.0
    },
    {
        "id": "ba1923aa-2beb-4e2d-9b88-2700d3b0ddd2",
        "email": "keerthi.lee@gmail.com",
        "firstName": "Keerthi",
        "lastName": "Lee",
        "balance": 55.0
    },
    {
        "id": "f5a66098-388a-4177-9670-6f4597e00388",
        "email": "wella.sky@gmail.com",
        "firstName": "Wella",
        "lastName": "Sky",
        "balance": 1200.0
    },
    {
        "id": "5b5c416a-6369-41d5-afb0-81dc8a45f4df",
        "email": "hinata.shoyo@gmail.com",
        "firstName": "Hinata",
        "lastName": "Soyo",
        "balance": 500.0
    }
]

In addition, an /authorize_transaction API for processing payment is also exposed.

POST: http://localhost:8081/authorize_transaction

Content-Type: application/json

Body:

{
    "Email": "keerthi.lee@gmail.com",
    "Transaction Number": "TR001",
    "Amount": 45.0,
    "First Name": "Keerthi",
    "Last Name": "Lee"
}

Response:

{
   "Transaction Number": "TR001",
   "Email": "keerthi.lee@gmail.com",
   "First Name": "Keerthi",
   "Last Name": "Lee",
   "Status": "APPROVED"
}

This response is sent back to the booking-service for approving or rejecting booking reservations

The booking-service app

The booking-service receives the list of transactions. Each transaction is sent to the payment-service to verify if the user has enough credit to pay the transaction amount. A list of rejected transactions is returned

POST: http://localhost:8080/rejected_transactions

Body:

"Jolly,Jae,jolly.jae@gmail.com,9000,TR001",
"Wella,Sky,wella.sky@gmail.com,50,TR002",
"Hinata,Shoyo,hinata.shoyo@gmail.com,1000,TR003"

Response:

{
    "Rejected Transactions": [
        {
            "First Name": "Jolly",
            "Last Name": "Jae",
            "Email": "jolly.jae@gmail.com",
            "Transaction Number": "TR001"
        },
        {
            "First Name": "Hinata",
            "Last Name": "Shoyo",
            "Email": "hinata.shoyo@gmail.com",
            "Transaction Number": "TR003"
        }
    ]
}