stable/freqtrade/exchange/kraken.py

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""" Kraken exchange subclass """
import logging
from typing import Dict
import ccxt
from freqtrade import OperationalException, TemporaryError
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from freqtrade.exchange import Exchange
from freqtrade.exchange.exchange import retrier
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logger = logging.getLogger(__name__)
class Kraken(Exchange):
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_params: Dict = {"trading_agreement": "agree"}
@retrier
def get_balances(self) -> dict:
if self._config['dry_run']:
return {}
try:
balances = self._api.fetch_balance()
# Remove additional info from ccxt results
balances.pop("info", None)
balances.pop("free", None)
balances.pop("total", None)
balances.pop("used", None)
orders = self._api.fetch_open_orders()
order_list = [(x["symbol"].split("/")[0 if x["side"] == "sell" else 1],
x["remaining"],
# Don't remove the below comment, this can be important for debuggung
# x["side"], x["amount"],
) for x in orders]
for bal in balances:
balances[bal]['used'] = sum(order[1] for order in order_list if order[0] == bal)
balances[bal]['free'] = balances[bal]['total'] - balances[bal]['used']
return balances
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
f'Could not get balance due to {e.__class__.__name__}. Message: {e}') from e
except ccxt.BaseError as e:
raise OperationalException(e) from e