@Override
public BigDecimal getExchangeRateLast(String cryptoCurrency, String fiatCurrency) {
if (!(ICurrencies.GRS.equalsIgnoreCase(cryptoCurrency))) {
return null;
}
if (!(ICurrencies.EUR.equalsIgnoreCase(fiatCurrency))) {
return null;
}
String key = cryptoCurrency + "_" + fiatCurrency;
synchronized (rateAmounts) {
long now = System.currentTimeMillis();
BigDecimal amount = rateAmounts.get(key);
if (amount == null) {
BigDecimal result = getExchangeRateLastSync(cryptoCurrency, fiatCurrency);
log.debug("Called GroestlcoinTicker exchange for rate: " + key + " = " + result);
rateAmounts.put(key, result);
rateTimes.put(key, now + MAXIMUM_ALLOWED_TIME_OFFSET);
return result;
} else {
Long expirationTime = rateTimes.get(key);
if (expirationTime > now) {
return rateAmounts.get(key);
} else {
// do the job;
BigDecimal result = getExchangeRateLastSync(cryptoCurrency, fiatCurrency);
log.debug("Called GroestlcoinTicker exchange for rate: " + key + " = " + result);
rateAmounts.put(key, result);
rateTimes.put(key, now + MAXIMUM_ALLOWED_TIME_OFFSET);
return result;
}
}
}
}
private BigDecimal getExchangeRateLastSync(String cryptoCurrency, String fiatCurrency) {
if (!(ICurrencies.GRS.equalsIgnoreCase(cryptoCurrency))) {
return null;
}
if (!(ICurrencies.EUR.equalsIgnoreCase(fiatCurrency))) {
return null;
}
GroestlcoinTickerResponse ticker = api.getTicker();
if (ticker != null && ticker.getEUR() != null) {
if (ICurrencies.EUR.equalsIgnoreCase(fiatCurrency)) {
return ticker.getEUR().getSell15m();
}
return null;
}
return null;
}