stable/freqtrade/exchange/__init__.py

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