Central Bank of Russia (CBR) Client

Java client based on new HttpClient (java 11+)

Usage

Simple client creation

CbrApi client = CbrClient.api();

Complex client configuration

var client = cbrClient()
    .useClient(HttpClient.newBuilder()
        .followRedirects(HttpClient.Redirect.ALWAYS)
        .priority(10)
        .connectTimeout(Duration.ofMillis(500))
        .executor(Executors.newSingleThreadExecutor())
        .build())
    .with(CircuitBreaker.ofDefaults())
    .with(RateLimiter.smoothBuilder(Duration.ofMillis(100))
        .build())
    .with(RetryPolicy.ofDefaults())
    .with(Timeout.of(Duration.ofMillis(400)))
    .rootPath("https://www.cbr.ru/scripts") -- just to use stub in tests
    .build();

Get latest rates

var client = CbrClient.api();
int rates = client.rates();

Get supported currencies

var client = CbrClient.api();
var ccurrencies = client.supportedCurrencies();

Dependencies

• Java 11+
• FailSafe
• Slf4j api
• Jaxb (api)
• WireMock (tests)
• Junit5 (tests)

Author

Anton Batiaev anton@batiaev.com