def convert_currency(self, from_currency, to_currency, amount):
log.debug("Converting %f %s to %s, rates: %s", amount, from_currency,
to_currency, [market.rate for market in self.market_feeds])
if from_currency == to_currency:
return round(amount, 8)
rates = []
for market in self.market_feeds:
if (market.has_rate and market.is_online and
market.rate.currency_pair == (from_currency, to_currency)):
rates.append(market.rate.spot)
if rates:
return round(amount * Decimal(median(rates)), 8)
raise CurrencyConversionError(
f'Unable to convert {amount} from {from_currency} to {to_currency}'
)
def convert_currency(self, from_currency, to_currency, amount):
rates = [market.rate for market in self.market_feeds]
log.debug("Converting %f %s to %s, rates: %s" %
(amount, from_currency, to_currency, rates))
if from_currency == to_currency:
return amount
for market in self.market_feeds:
if (market.rate_is_initialized() and market.is_online() and
market.rate.currency_pair == (from_currency, to_currency)):
return amount * Decimal(market.rate.spot)
for market in self.market_feeds:
if (market.rate_is_initialized() and market.is_online()
and market.rate.currency_pair[0] == from_currency):
return self.convert_currency(
market.rate.currency_pair[1], to_currency,
amount * Decimal(market.rate.spot))
raise CurrencyConversionError(
f'Unable to convert {amount} from {from_currency} to {to_currency}'
)