• .NET 5

• Unsuccessful card_number: 4111111111111111

• Only Visa card accepted, RegexValidation : ^4[0-9]{12}(?:[0-9]{3})?$ (ref https://www.regular-expressions.info/creditcard.html)

• Payment Status: Succeed=1 , Failed=2

Method: POST

URI: /api/v1.0/payment

e.g of valid request:

{
  "card": {
    "cardNumber": "4111111111111122",
    "expirationDate": "06/21",
    "cvv": "123"
  },
  "amount": 100,
  "currency": "USD",
  "beneficiaryAlias": "merchant-njaka"
}

Method: GET

URI: /api/v1.0/payment/{paymentId}

e.g payment details

{
  "paymentId": "00f15e68-c88a-4074-8f0b-2cc02b3d6a64",
  "card": {
    "cardNumber": "411111XXXXXX1122",
    "expirationDate": "2021-06-30T23:59:59",
    "cvv": "123"
  },
  "amount": 100,
  "currency": "USD",
  "beneficiaryAlias": "merchant-njaka",
  "status": 1,
  "paymentDate": "2020-06-18T00:05:20.0491589+02:00"
}

Download (EventStoreDB 5.0.8)

https://eventstore.com/downloads/

Extract and using command run the command above to Start

EventStore.ClusterNode.exe --db ./db --log ./logs

Build image

docker build -t njakaraz/paymentgateway:latest

Image pushed to Registry

docker push njakaraz/paymentgateway:latest

Run

docker run -it --rm -p 5053:80 njakaraz/paymentgateway --name paymentgateway

Access: http://localhost:5053/index.html

• HealthCheck : {baseUrl}/health
• Metrics : {baseUrl}/metrics

• Onion Architecture

• FluentMediator for handling events (https://github.com/ivanpaulovich/FluentMediator)
• Metrics using prometheus
• Event Store to EventSourcing (https://eventstore.com/downloads/)
• InMemory Database
• Native .Net Core DI
• Api documentation with Swagger