freqtrade_origin/freqtrade/pairlist/IPairList.py
2019-03-21 06:14:43 +01:00

87 lines
2.7 KiB
Python

"""
Static List provider
Provides lists as configured in config.json
"""
import logging
from abc import ABC, abstractmethod
from typing import List
logger = logging.getLogger(__name__)
class IPairList(ABC):
def __init__(self, freqtrade, config: dict) -> None:
self._freqtrade = freqtrade
self._config = config
self._whitelist = self._config['exchange']['pair_whitelist']
self._blacklist = self._config['exchange'].get('pair_blacklist', [])
@property
def name(self) -> str:
"""
Gets name of the class
-> no need to overwrite in subclasses
"""
return self.__class__.__name__
@property
def whitelist(self) -> List[str]:
"""
Has the current whitelist
-> no need to overwrite in subclasses
"""
return self._whitelist
@property
def blacklist(self) -> List[str]:
"""
Has the current blacklist
-> no need to overwrite in subclasses
"""
return self._blacklist
@abstractmethod
def short_desc(self) -> str:
"""
Short whitelist method description - used for startup-messages
-> Please overwrite in subclasses
"""
@abstractmethod
def refresh_pairlist(self) -> None:
"""
Refreshes pairlists and assigns them to self._whitelist and self._blacklist respectively
-> Please overwrite in subclasses
"""
def _validate_whitelist(self, whitelist: List[str]) -> List[str]:
"""
Check available markets and remove pair from whitelist if necessary
:param whitelist: the sorted list of pairs the user might want to trade
:return: the list of pairs the user wants to trade without those unavailable or
black_listed
"""
markets = self._freqtrade.exchange.markets
sanitized_whitelist = set()
for pair in whitelist:
# pair is not in the generated dynamic market, or in the blacklist ... ignore it
if (pair in self.blacklist or pair not in markets
or not pair.endswith(self._config['stake_currency'])):
logger.warning(f"Pair {pair} is not compatible with exchange "
f"{self._freqtrade.exchange.name} or contained in "
f"your blacklist. Removing it from whitelist..")
continue
# Check if market is active
market = markets[pair]
if not market['active']:
logger.info(f"Ignoring {pair} from whitelist. Market is not active.")
continue
sanitized_whitelist.add(pair)
# We need to remove pairs that are unknown
return list(sanitized_whitelist)