From 49dcc561b77461ce22f8f875c49814008592b078 Mon Sep 17 00:00:00 2001
From: Matthias <xmatthias@outlook.com>
Date: Thu, 6 Feb 2020 20:30:17 +0100
Subject: [PATCH] POC for check_buy_timeout

---
 freqtrade/freqtradebot.py              |  7 ++++++-
 freqtrade/strategy/interface.py        | 18 ++++++++++++++++++
 freqtrade/strategy/strategy_wrapper.py |  2 +-
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/freqtrade/freqtradebot.py b/freqtrade/freqtradebot.py
index e51b3d550..f458f91d6 100644
--- a/freqtrade/freqtradebot.py
+++ b/freqtrade/freqtradebot.py
@@ -26,6 +26,7 @@ from freqtrade.resolvers import ExchangeResolver, StrategyResolver
 from freqtrade.rpc import RPCManager, RPCMessageType
 from freqtrade.state import State
 from freqtrade.strategy.interface import IStrategy, SellType
+from freqtrade.strategy.strategy_wrapper import strategy_safe_wrapper
 from freqtrade.wallets import Wallets
 
 logger = logging.getLogger(__name__)
@@ -819,7 +820,11 @@ class FreqtradeBot:
                 continue
 
             if ((order['side'] == 'buy' and order['status'] == 'canceled')
-                    or (self._check_timed_out('buy', order))):
+                    or self._check_timed_out('buy', order)
+                    or strategy_safe_wrapper(self.strategy.check_buy_timeout,
+                                             default_retval=False)(pair=trade.pair,
+                                                                   trade=trade,
+                                                                   order=order)):
 
                 self.handle_timedout_limit_buy(trade, order)
                 self.wallets.update()
diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index c20bf0218..de08b7cda 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -149,6 +149,24 @@ class IStrategy(ABC):
         :return: DataFrame with sell column
         """
 
+    def check_buy_timeout(self, pair: str, trade: Trade, order: Dict, **kwargs) -> bool:
+        """
+        Check buy timeout function callback.
+        This method can be used to override the buy-timeout.
+        It is called whenever a limit buy order has been created,
+        and is not yet fully filled.
+        Configuration options in `unfilledtimeout` will be verified before this,
+        so ensure to set these timeouts high enough.
+
+        When not implemented by a strategy, this simply returns False.
+        :param pair: Pair the trade is for
+        :param trade: trade object.
+        :param order: Order dictionary as returned from CCXT.
+        :param **kwargs: Ensure to keep this here so updates to this won't break your strategy.
+        :return bool: When True is returned, then the buy-order is cancelled.
+        """
+        return False
+
     def informative_pairs(self) -> List[Tuple[str, str]]:
         """
         Define additional, informative pair/interval combinations to be cached from the exchange.
diff --git a/freqtrade/strategy/strategy_wrapper.py b/freqtrade/strategy/strategy_wrapper.py
index 61c986732..4f35bfbab 100644
--- a/freqtrade/strategy/strategy_wrapper.py
+++ b/freqtrade/strategy/strategy_wrapper.py
@@ -5,7 +5,7 @@ from freqtrade.exceptions import StrategyError
 logger = logging.getLogger(__name__)
 
 
-def strategy_safe_wrapper(f, message: str, default_retval=None):
+def strategy_safe_wrapper(f, message: str = "", default_retval=None):
     def wrapper(*args, **kwargs):
         try:
             return f(*args, **kwargs)