mgrigoriev / go-currency-rates

Currency Converter

An application in Go for currency conversion using the Central Bank of Russia exchange rates.

How It Works

• A separate goroutine downloads XML with currency rates every hour and caches them in memory.
• The HTTP server listens on port 8888 and provides two endpoints:
  • / — usage examples
  • /convert — currency converter

Running the app (two ways)

1. Wrapper for go run:
   • make run
2. Building and running a Docker container:
   • make d

Examples of API Requests

• 100 RUB → USD:

  • http://127.0.0.1:8888/convert/?amount=100&from=RUB&to=USD

• 100 EUR → RUB:

  • http://127.0.0.1:8888/convert/?amount=100&from=RUB&to=USD

• 1100 USD → AMD:

  • http://127.0.0.1:8888/convert/?amount=1100&from=USD&to=AMD

Running the tests

make test