120 lines
2.9 KiB
Python
120 lines
2.9 KiB
Python
import enum
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import logging
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from typing import List
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import arrow
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from freqtrade.exchange.backtesting import Backtesting
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from freqtrade.exchange.bittrex import Bittrex
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from freqtrade.exchange.interface import Exchange
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from freqtrade.misc import State, get_state
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logger = logging.getLogger(__name__)
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# Current selected exchange
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EXCHANGE: Exchange = None
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_CONF: dict = {}
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class Exchanges(enum.Enum):
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"""
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Maps supported exchange names to correspondent classes.
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"""
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BITTREX = Bittrex
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def init(config: dict) -> None:
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"""
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Initializes this module with the given config,
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it does basic validation whether the specified
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exchange and pairs are valid.
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:param config: config to use
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:return: None
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"""
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global _CONF, EXCHANGE
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_CONF.update(config)
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if get_state() == State.BACKTESTING:
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logger.info('Instance is running with backtesting enabled')
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EXCHANGE = Backtesting(config['exchange'])
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return
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elif config['dry_run']:
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logger.info('Instance is running with dry_run enabled')
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# Find matching class for the given exchange name
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name = _CONF['exchange']['name']
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try:
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exchange_class = Exchanges[name.upper()].value
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except KeyError:
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raise RuntimeError('Exchange {} is not supported'.format(name))
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EXCHANGE = exchange_class(_CONF['exchange'])
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# Check if all pairs are available
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validate_pairs(_CONF['exchange']['pair_whitelist'])
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def validate_pairs(pairs: List[str]) -> None:
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"""
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Checks if all given pairs are tradable on the current exchange.
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Raises RuntimeError if one pair is not available.
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:param pairs: list of pairs
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:return: None
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"""
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markets = EXCHANGE.get_markets()
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for pair in pairs:
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if pair not in markets:
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raise RuntimeError('Pair {} is not available at {}'.format(pair, EXCHANGE.name.lower()))
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def buy(pair: str, rate: float, amount: float) -> str:
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if _CONF['dry_run']:
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return 'dry_run'
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return EXCHANGE.buy(pair, rate, amount)
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def sell(pair: str, rate: float, amount: float) -> str:
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if _CONF['dry_run']:
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return 'dry_run'
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return EXCHANGE.sell(pair, rate, amount)
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def get_balance(currency: str) -> float:
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if _CONF['dry_run']:
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return 999.9
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return EXCHANGE.get_balance(currency)
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def get_ticker(pair: str) -> dict:
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return EXCHANGE.get_ticker(pair)
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def get_ticker_history(pair: str, minimum_date: arrow.Arrow):
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return EXCHANGE.get_ticker_history(pair, minimum_date)
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def cancel_order(order_id: str) -> None:
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if _CONF['dry_run']:
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return
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return EXCHANGE.cancel_order(order_id)
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def get_open_orders(pair: str) -> List[dict]:
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if _CONF['dry_run']:
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return []
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return EXCHANGE.get_open_orders(pair)
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def get_pair_detail_url(pair: str) -> str:
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return EXCHANGE.get_pair_detail_url(pair)
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def get_markets() -> List[str]:
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return EXCHANGE.get_markets()
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