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Extract get_available_stake_amount

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This commit is contained in:
Matthias 2020-01-03 10:14:23 +01:00
parent 4ac1ac7ef5
commit 3c7981160c
1 changed files with 17 additions and 7 deletions
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24
freqtrade/freqtradebot.py
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@ -270,6 +270,22 @@ class FreqtradeBot:
return self._check_available_stake_amount(stake_amount)
def _get_available_stake_amount(self) -> float:
"""
Return the total currently available balance in stake currency,
respecting tradable_balance_ratio.
Calculated as
<open_trade stakes> + free amount ) * tradable_balance_ratio - <open_trade stakes>
"""
val_tied_up = Trade.total_open_trades_stakes()
# Ensure <tradable_balance_ratio>% is used from the overall balance
# Otherwise we'd risk lowering stakes with each open trade.
# (tied up + current free) * ratio) - tied up
available_amount = ((val_tied_up + self.wallets.get_free(self.config['stake_currency'])) *
self.config['tradable_balance_ratio']) - val_tied_up
return available_amount
def _calculate_unlimited_stake_amount(self) -> Optional[float]:
"""
Calculate stake amount for "unlimited" stake amount
@ -279,13 +295,7 @@ class FreqtradeBot:
if not free_open_trades:
return None
val_tied_up = Trade.total_open_trades_stakes()
# Ensure 1% is used from the overall balance
# Otherwise we'd risk lowering stakes with each open trade.
# (tied up + current free) * ratio) - tied up
available_amount = ((val_tied_up + self.wallets.get_free(self.config['stake_currency'])) *
self.config['tradable_balance_ratio']) - val_tied_up
available_amount = self._get_available_stake_amount()
return available_amount / free_open_trades