Kraken Client

Async client with CompletableFutures based on new HttpClient (java 11+)

Dependency

https://mvnrepository.com/artifact/org.fintecy.md/kraken-client/1.0.0

Gradle

dependencies {
    implementation 'org.fintecy.md:kraken-client:1.0.0'
}

Maven

<dependency>
    <groupId>org.fintecy.md</groupId>
    <artifactId>kraken-client</artifactId>
    <version>1.0.0</version>
</dependency>

Usage

Simple client creation

krakenApi api = KrakenClient.api();
ExchangeRate latest = api.latest("BTC-USD").get();

Complex client configuration

var client = krakenClient()
    .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://api.kraken.com/0") -- just to use stub in tests
    .build();

Dependencies

• Java 11+
• FailSafe
• Slf4j api
• Jackson (databind, datatype-jsr310)
• WireMock (tests)
• Junit5 (tests)

Author

Anton Batiaev anton@batiaev.com