103 lines
3.6 KiB
Python
103 lines
3.6 KiB
Python
"""
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Static List provider
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Provides lists as configured in config.json
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"""
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import logging
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from abc import ABC, abstractmethod, abstractproperty
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from copy import deepcopy
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from typing import Dict, List
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from freqtrade.exchange import market_is_active
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logger = logging.getLogger(__name__)
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class IPairList(ABC):
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def __init__(self, exchange, pairlistmanager, config, pairlistconfig: dict) -> None:
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self._exchange = exchange
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self._pairlistmanager = pairlistmanager
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self._config = config
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self._pairlistconfig = pairlistconfig
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@property
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def name(self) -> str:
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"""
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Gets name of the class
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-> no need to overwrite in subclasses
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"""
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return self.__class__.__name__
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@abstractproperty
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def needstickers(self) -> bool:
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"""
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Boolean property defining if tickers are necessary.
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If no Pairlist requries tickers, an empty List is passed
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as tickers argument to filter_pairlist
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"""
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@abstractmethod
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def short_desc(self) -> str:
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"""
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Short whitelist method description - used for startup-messages
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-> Please overwrite in subclasses
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"""
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@abstractmethod
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def filter_pairlist(self, pairlist: List[str], tickers: Dict) -> List[str]:
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"""
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Filters and sorts pairlist and returns the whitelist again.
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Called on each bot iteration - please use internal caching if necessary
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-> Please overwrite in subclasses
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:param pairlist: pairlist to filter or sort
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:param tickers: Tickers (from exchange.get_tickers()). May be cached.
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:return: new whitelist
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"""
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@staticmethod
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def verify_blacklist(pairlist: List[str], blacklist: List[str]) -> List[str]:
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"""
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Verify and remove items from pairlist - returning a filtered pairlist.
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"""
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for pair in deepcopy(pairlist):
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if pair in blacklist:
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logger.warning(f"Pair {pair} in your blacklist. Removing it from whitelist...")
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pairlist.remove(pair)
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return pairlist
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def _verify_blacklist(self, pairlist: List[str]) -> List[str]:
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"""
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Proxy method to verify_blacklist for easy access for child classes.
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"""
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return IPairList.verify_blacklist(pairlist, self._pairlistmanager.blacklist)
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def _whitelist_for_active_markets(self, whitelist: List[str]) -> List[str]:
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"""
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Check available markets and remove pair from whitelist if necessary
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:param whitelist: the sorted list of pairs the user might want to trade
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:return: the list of pairs the user wants to trade without those unavailable or
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black_listed
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"""
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markets = self._exchange.markets
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sanitized_whitelist: List[str] = []
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for pair in whitelist:
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# pair is not in the generated dynamic market or has the wrong stake currency
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if (pair not in markets or not pair.endswith(self._config['stake_currency'])):
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logger.warning(f"Pair {pair} is not compatible with exchange "
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f"{self._exchange.name}. Removing it from whitelist..")
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continue
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# Check if market is active
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market = markets[pair]
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if not market_is_active(market):
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logger.info(f"Ignoring {pair} from whitelist. Market is not active.")
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continue
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if pair not in sanitized_whitelist:
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sanitized_whitelist.append(pair)
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sanitized_whitelist = self._verify_blacklist(sanitized_whitelist)
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# We need to remove pairs that are unknown
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return sanitized_whitelist
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