import logging from typing import Dict, List, Optional from bittrex.bittrex import Bittrex as _Bittrex from bittrex.bittrex import API_V1_1, API_V2_0 from requests.exceptions import ContentDecodingError from freqtrade import OperationalException from freqtrade.exchange.interface import Exchange logger = logging.getLogger(__name__) _API: _Bittrex = None _API_V2: _Bittrex = None _EXCHANGE_CONF: dict = {} class Bittrex(Exchange): """ Bittrex API wrapper. """ # Base URL and API endpoints BASE_URL: str = 'https://www.bittrex.com' PAIR_DETAIL_METHOD: str = BASE_URL + '/Market/Index' def __init__(self, config: dict) -> None: global _API, _API_V2, _EXCHANGE_CONF _EXCHANGE_CONF.update(config) _API = _Bittrex( api_key=_EXCHANGE_CONF['key'], api_secret=_EXCHANGE_CONF['secret'], calls_per_second=1, api_version=API_V1_1, ) _API_V2 = _Bittrex( api_key=_EXCHANGE_CONF['key'], api_secret=_EXCHANGE_CONF['secret'], calls_per_second=1, api_version=API_V2_0, ) self.cached_ticker = {} @staticmethod def _validate_response(response) -> None: """ Validates the given bittrex response and raises a ContentDecodingError if a non-fatal issue happened. """ temp_error_messages = [ 'NO_API_RESPONSE', 'MIN_TRADE_REQUIREMENT_NOT_MET', ] if response['message'] in temp_error_messages: raise ContentDecodingError('Got {}'.format(response['message'])) @property def fee(self) -> float: # 0.25 %: See https://bittrex.com/fees return 0.0025 def buy(self, pair: str, rate: float, amount: float) -> str: data = _API.buy_limit(pair.replace('_', '-'), amount, rate) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({pair}, {rate}, {amount})'.format( message=data['message'], pair=pair, rate=rate, amount=amount)) return data['result']['uuid'] def sell(self, pair: str, rate: float, amount: float) -> str: data = _API.sell_limit(pair.replace('_', '-'), amount, rate) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({pair}, {rate}, {amount})'.format( message=data['message'], pair=pair, rate=rate, amount=amount)) return data['result']['uuid'] def get_balance(self, currency: str) -> float: data = _API.get_balance(currency) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({currency})'.format( message=data['message'], currency=currency)) return float(data['result']['Balance'] or 0.0) def get_balances(self): data = _API.get_balances() if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message}'.format(message=data['message'])) return data['result'] def get_ticker(self, pair: str, refresh: Optional[bool] = True) -> dict: if refresh or pair not in self.cached_ticker.keys(): data = _API.get_ticker(pair.replace('_', '-')) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({pair})'.format( message=data['message'], pair=pair)) keys = ['Bid', 'Ask', 'Last'] if not data.get('result') or\ not all(key in data.get('result', {}) for key in keys) or\ not all(data.get('result', {})[key] is not None for key in keys): raise ContentDecodingError('{message} params=({pair})'.format( message='Got invalid response from bittrex', pair=pair)) # Update the pair self.cached_ticker[pair] = { 'bid': float(data['result']['Bid']), 'ask': float(data['result']['Ask']), 'last': float(data['result']['Last']), } return self.cached_ticker[pair] def get_ticker_history(self, pair: str, tick_interval: int) -> List[Dict]: if tick_interval == 1: interval = 'oneMin' elif tick_interval == 5: interval = 'fiveMin' elif tick_interval == 30: interval = 'thirtyMin' elif tick_interval == 60: interval = 'hour' elif tick_interval == 1440: interval = 'Day' else: raise ValueError('Cannot parse tick_interval: {}'.format(tick_interval)) data = _API_V2.get_candles(pair.replace('_', '-'), interval) # These sanity check are necessary because bittrex cannot keep their API stable. if not data.get('result'): raise ContentDecodingError('{message} params=({pair})'.format( message='Got invalid response from bittrex', pair=pair)) for prop in ['C', 'V', 'O', 'H', 'L', 'T']: for tick in data['result']: if prop not in tick.keys(): raise ContentDecodingError('{message} params=({pair})'.format( message='Required property {} not present in response'.format(prop), pair=pair)) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({pair})'.format( message=data['message'], pair=pair)) return data['result'] def get_order(self, order_id: str) -> Dict: data = _API.get_order(order_id) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({order_id})'.format( message=data['message'], order_id=order_id)) data = data['result'] return { 'id': data['OrderUuid'], 'type': data['Type'], 'pair': data['Exchange'].replace('-', '_'), 'opened': data['Opened'], 'rate': data['PricePerUnit'], 'amount': data['Quantity'], 'remaining': data['QuantityRemaining'], 'closed': data['Closed'], } def cancel_order(self, order_id: str) -> None: data = _API.cancel(order_id) if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message} params=({order_id})'.format( message=data['message'], order_id=order_id)) def get_pair_detail_url(self, pair: str) -> str: return self.PAIR_DETAIL_METHOD + '?MarketName={}'.format(pair.replace('_', '-')) def get_markets(self) -> List[str]: data = _API.get_markets() if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message}'.format(message=data['message'])) return [m['MarketName'].replace('-', '_') for m in data['result']] def get_market_summaries(self) -> List[Dict]: data = _API.get_market_summaries() if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message}'.format(message=data['message'])) return data['result'] def get_wallet_health(self) -> List[Dict]: data = _API_V2.get_wallet_health() if not data['success']: Bittrex._validate_response(data) raise OperationalException('{message}'.format(message=data['message'])) return [{ 'Currency': entry['Health']['Currency'], 'IsActive': entry['Health']['IsActive'], 'LastChecked': entry['Health']['LastChecked'], 'Notice': entry['Currency'].get('Notice'), } for entry in data['result']]