stable/freqtrade/plugins/protections/iprotection.py
2020-12-07 08:23:10 +01:00

68 lines
2.0 KiB
Python

import logging
from abc import ABC, abstractmethod
from datetime import datetime, timedelta, timezone
from typing import Any, Dict, List, Optional, Tuple
from freqtrade.mixins import LoggingMixin
from freqtrade.persistence import Trade
logger = logging.getLogger(__name__)
ProtectionReturn = Tuple[bool, Optional[datetime], Optional[str]]
class IProtection(LoggingMixin, ABC):
# Can globally stop the bot
has_global_stop: bool = False
# Can stop trading for one pair
has_local_stop: bool = False
def __init__(self, config: Dict[str, Any], protection_config: Dict[str, Any]) -> None:
self._config = config
self._protection_config = protection_config
LoggingMixin.__init__(self, logger)
@property
def name(self) -> str:
return self.__class__.__name__
@abstractmethod
def short_desc(self) -> str:
"""
Short method description - used for startup-messages
-> Please overwrite in subclasses
"""
@abstractmethod
def global_stop(self, date_now: datetime) -> ProtectionReturn:
"""
Stops trading (position entering) for all pairs
This must evaluate to true for the whole period of the "cooldown period".
"""
@abstractmethod
def stop_per_pair(self, pair: str, date_now: datetime) -> ProtectionReturn:
"""
Stops trading (position entering) for this pair
This must evaluate to true for the whole period of the "cooldown period".
:return: Tuple of [bool, until, reason].
If true, this pair will be locked with <reason> until <until>
"""
@staticmethod
def calculate_lock_end(trades: List[Trade], stop_minutes: int) -> datetime:
"""
Get lock end time
"""
max_date: datetime = max([trade.close_date for trade in trades])
# comming from Database, tzinfo is not set.
if max_date.tzinfo is None:
max_date = max_date.replace(tzinfo=timezone.utc)
until = max_date + timedelta(minutes=stop_minutes)
return until