European Central Bank (ECB) Client

Java client based on new HttpClient (java 11+)

Dependency

https://mvnrepository.com/artifact/org.fintecy.md/ecb-client/1.0.1

Gradle

implementation 'org.fintecy.md:ecb-client:1.0.1'

Maven

<dependency>
    <groupId>org.fintecy.md</groupId>
    <artifactId>ecb-client</artifactId>
    <version>1.0.1</version>
</dependency>

Usage

Simple client creation

EcbApi client = EcbClient.api();

Complex client configuration

var client = ecbClient()
    .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.ecb.europa.eu/stats/eurofxref") -- just to use stub in tests
    .build();

Get latest rates

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

Get supported currencies

var client = EcbClient.api();
var currencies = client.supportedCurrencies();

Dependencies

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

Author

Anton Batiaev anton@batiaev.com