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Add exception handlers for orderbook logic

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Matthias
2020-05-26 20:14:05 +02:00
parent 76e4e5897f
commit 7a7b26e840
2 changed files with 41 additions and 22 deletions
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35
freqtrade/freqtradebot.py
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@@ -18,7 +18,7 @@ from freqtrade.configuration import validate_config_consistency
from freqtrade.data.converter import order_book_to_dataframe
from freqtrade.data.dataprovider import DataProvider
from freqtrade.edge import Edge
from freqtrade.exceptions import DependencyException, InvalidOrderException
from freqtrade.exceptions import DependencyException, InvalidOrderException, PricingException
from freqtrade.exchange import timeframe_to_minutes, timeframe_to_next_date
from freqtrade.misc import safe_value_fallback
from freqtrade.pairlist.pairlistmanager import PairListManager
@@ -263,9 +263,16 @@ class FreqtradeBot:
order_book = self.exchange.get_order_book(pair, order_book_top)
logger.debug('order_book %s', order_book)
# top 1 = index 0
order_book_rate = order_book[f"{bid_strategy['price_side']}s"][order_book_top - 1][0]
logger.info(f'...top {order_book_top} order book buy rate {order_book_rate:.8f}')
used_rate = order_book_rate
try:
rate_from_l2 = order_book[f"{bid_strategy['price_side']}s"][order_book_top - 1][0]
except (IndexError, KeyError) as e:
logger.warning(
"Buy Price from orderbook could not be determined."
f"Orderbook: {order_book}"
)
raise PricingException from e
logger.info(f'...top {order_book_top} order book buy rate {rate_from_l2:.8f}')
used_rate = rate_from_l2
else:
logger.info(f"Using Last {bid_strategy['price_side'].capitalize()} / Last Price")
ticker = self.exchange.fetch_ticker(pair)
@@ -662,8 +669,13 @@ class FreqtradeBot:
logger.info(
f"Getting price from order book {ask_strategy['price_side'].capitalize()} side."
)
rate = next(self._order_book_gen(pair, f"{ask_strategy['price_side']}s"))
try:
rate = next(self._order_book_gen(pair, f"{ask_strategy['price_side']}s"))
except (IndexError, KeyError) as e:
logger.warning(
f"Sell Price at location from orderbook could not be determined."
)
raise PricingException from e
else:
rate = self.exchange.fetch_ticker(pair)[ask_strategy['price_side']]
self._sell_rate_cache[pair] = rate
@@ -690,16 +702,23 @@ class FreqtradeBot:
self.dataprovider.ohlcv(trade.pair, self.strategy.ticker_interval))
if config_ask_strategy.get('use_order_book', False):
logger.debug(f'Using order book for selling {trade.pair}...')
# logger.debug('Order book %s',orderBook)
order_book_min = config_ask_strategy.get('order_book_min', 1)
order_book_max = config_ask_strategy.get('order_book_max', 1)
logger.info(f'Using order book between {order_book_min} and {order_book_max} '
f'for selling {trade.pair}...')
order_book = self._order_book_gen(trade.pair, f"{config_ask_strategy['price_side']}s",
order_book_min=order_book_min,
order_book_max=order_book_max)
for i in range(order_book_min, order_book_max + 1):
sell_rate = next(order_book)
try:
sell_rate = next(order_book)
except (IndexError, KeyError) as e:
logger.warning(
f"Sell Price at location {i} from orderbook could not be determined."
)
raise PricingException from e
logger.debug(f" order book {config_ask_strategy['price_side']} top {i}: "
f"{sell_rate:0.8f}")