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Implement strategy-controlled stake sizes. Expose self.wallet to a strategy.

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This commit is contained in:
Rokas Kupstys
2021-07-11 12:20:31 +03:00
parent 2f33b97b95
commit 0e4466ca1e
7 changed files with 136 additions and 19 deletions
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27
freqtrade/freqtradebot.py
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@@ -424,16 +424,10 @@ class FreqtradeBot(LoggingMixin):
if buy and not sell:
stake_amount = self.wallets.get_trade_stake_amount(pair, self.edge)
if not stake_amount:
logger.debug(f"Stake amount is 0, ignoring possible trade for {pair}.")
return False
logger.info(f"Buy signal found: about create a new trade for {pair} with stake_amount: "
f"{stake_amount} ...")
bid_check_dom = self.config.get('bid_strategy', {}).get('check_depth_of_market', {})
if ((bid_check_dom.get('enabled', False)) and
(bid_check_dom.get('bids_to_ask_delta', 0) > 0)):
(bid_check_dom.get('bids_to_ask_delta', 0) > 0)):
if self._check_depth_of_market_buy(pair, bid_check_dom):
return self.execute_buy(pair, stake_amount)
else:
@@ -488,13 +482,22 @@ class FreqtradeBot(LoggingMixin):
min_stake_amount = self.exchange.get_min_pair_stake_amount(pair, buy_limit_requested,
self.strategy.stoploss)
if min_stake_amount is not None and min_stake_amount > stake_amount:
logger.warning(
f"Can't open a new trade for {pair}: stake amount "
f"is too small ({stake_amount} < {min_stake_amount})"
)
if not self.edge:
max_stake_amount = self.wallets.get_available_stake_amount()
stake_amount = strategy_safe_wrapper(self.strategy.custom_stake_amount,
default_retval=None)(
pair=pair, current_time=datetime.now(timezone.utc),
current_rate=buy_limit_requested, proposed_stake=stake_amount,
min_stake=min_stake_amount, max_stake=max_stake_amount)
stake_amount = self.wallets._validate_stake_amount(pair, stake_amount, min_stake_amount)
if not stake_amount:
return False
logger.info(f"Buy signal found: about create a new trade for {pair} with stake_amount: "
f"{stake_amount} ...")
amount = stake_amount / buy_limit_requested
order_type = self.strategy.order_types['buy']
if forcebuy: