Currency Converter Service

A Simple Service demonstrating the use of Netflix Eureka for providing service for currency converter

Service Provider

@EnableEurekaServer
@SpringBootApplication
@RestController
public class CurrencyConverterApp {

private static final Logger log = LoggerFactory.getLogger(CurrencyConverterApp.class);

@Value("${currency_converter_url}")
private String CURRENCY_CONVERTER_URL;

public static void main(String[] args) {
	SpringApplication.run(CurrencyConverterApp.class, args);
}

@RequestMapping(value="convert/{currencyFrom}/{currencyTo}", produces=MediaType.APPLICATION_JSON_VALUE)
@GetMapping
public CurrencyConversion convertCurrency(@PathVariable("currencyFrom") String currencyFrom, 
								@PathVariable("currencyTo") String currencyTo) {
	log.info("Reading conversion from url " + this.CURRENCY_CONVERTER_URL);
	CurrencyConversion currencyConversion = new RestTemplateBuilder().build().getForObject(CURRENCY_CONVERTER_URL.replace("CURRENCY_FROM", currencyFrom).replace("CURRENCY_TO", currencyTo), CurrencyConversion.class);
	return currencyConversion;
}
}

application.yml

api_layer_accesskey: 
currency_converter_url: "http://apilayer.net/api/live?access_key=${api_layer_accesskey}&currencies=CURRENCY_TO&source=CURRENCY_FROM&format=1"
server:
	port: 8761
eureka:
	client:
		registerWithEureka: false
		fetchRegistry: false

Configuration

1. Create your api access key from http://apilayer.net and copy it for api_layer_accesskey

Payload

Request

Converting USD to CAD http://localhost:8761/convert/USD/CAD

Response

{"source":"USD","timestamp":1524454683,"quotes":{"USDCAD":1.27564}}