mirror of
https://github.com/freqtrade/freqtrade.git
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118 lines
4.5 KiB
Python
118 lines
4.5 KiB
Python
"""
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Protection manager class
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"""
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import logging
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from datetime import datetime, timezone
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from typing import Any, Dict, List, Optional
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from freqtrade.constants import Config, LongShort
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from freqtrade.exceptions import ConfigurationError
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from freqtrade.persistence import PairLocks
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from freqtrade.persistence.models import PairLock
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from freqtrade.plugins.protections import IProtection
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from freqtrade.resolvers import ProtectionResolver
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logger = logging.getLogger(__name__)
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class ProtectionManager:
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def __init__(self, config: Config, protections: List) -> None:
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self._config = config
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self._protection_handlers: List[IProtection] = []
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self.validate_protections(protections)
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for protection_handler_config in protections:
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protection_handler = ProtectionResolver.load_protection(
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protection_handler_config["method"],
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config=config,
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protection_config=protection_handler_config,
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)
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self._protection_handlers.append(protection_handler)
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if not self._protection_handlers:
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logger.info("No protection Handlers defined.")
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@property
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def name_list(self) -> List[str]:
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"""
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Get list of loaded Protection Handler names
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"""
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return [p.name for p in self._protection_handlers]
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def short_desc(self) -> List[Dict]:
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"""
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List of short_desc for each Pairlist Handler
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"""
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return [{p.name: p.short_desc()} for p in self._protection_handlers]
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def global_stop(
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self, now: Optional[datetime] = None, side: LongShort = "long"
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) -> Optional[PairLock]:
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if not now:
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now = datetime.now(timezone.utc)
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result = None
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for protection_handler in self._protection_handlers:
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if protection_handler.has_global_stop:
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lock = protection_handler.global_stop(date_now=now, side=side)
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if lock and lock.until:
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if not PairLocks.is_global_lock(lock.until, side=lock.lock_side):
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result = PairLocks.lock_pair(
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"*", lock.until, lock.reason, now=now, side=lock.lock_side
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)
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return result
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def stop_per_pair(
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self, pair, now: Optional[datetime] = None, side: LongShort = "long"
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) -> Optional[PairLock]:
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if not now:
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now = datetime.now(timezone.utc)
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result = None
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for protection_handler in self._protection_handlers:
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if protection_handler.has_local_stop:
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lock = protection_handler.stop_per_pair(pair=pair, date_now=now, side=side)
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if lock and lock.until:
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if not PairLocks.is_pair_locked(pair, lock.until, lock.lock_side):
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result = PairLocks.lock_pair(
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pair, lock.until, lock.reason, now=now, side=lock.lock_side
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)
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return result
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@staticmethod
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def validate_protections(protections: List[Dict[str, Any]]) -> None:
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"""
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Validate protection setup validity
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"""
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for prot in protections:
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parsed_unlock_at = None
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if (config_unlock_at := prot.get("unlock_at")) is not None:
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try:
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parsed_unlock_at = datetime.strptime(config_unlock_at, "%H:%M")
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except ValueError:
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raise ConfigurationError(
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f"Invalid date format for unlock_at: {config_unlock_at}."
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)
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if "stop_duration" in prot and "stop_duration_candles" in prot:
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raise ConfigurationError(
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"Protections must specify either `stop_duration` or `stop_duration_candles`.\n"
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f"Please fix the protection {prot.get('method')}."
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)
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if "lookback_period" in prot and "lookback_period_candles" in prot:
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raise ConfigurationError(
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"Protections must specify either `lookback_period` or "
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f"`lookback_period_candles`.\n Please fix the protection {prot.get('method')}."
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)
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if parsed_unlock_at is not None and (
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"stop_duration" in prot or "stop_duration_candles" in prot
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):
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raise ConfigurationError(
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"Protections must specify either `unlock_at`, `stop_duration` or "
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"`stop_duration_candles`.\n"
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f"Please fix the protection {prot.get('method')}."
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)
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