[Exchange] fix open position check and set_symbol_position_mode

tmp

Author: techfreaque

octobot_trading/exchanges/connectors/ccxt/ccxt_connector.py

@@ -427,9 +427,11 @@ async def get_positions(self, symbols=None, **kwargs: dict) -> list:
         ]
 
     async def get_position(self, symbol: str, **kwargs: dict) -> dict:
-        return self.adapter.adapt_position(
-            await self.client.fetch_position(symbol=symbol, params=kwargs)
-        )
+        if self.client.has.get("fetchPosition"):
+            return self.adapter.adapt_position(
+                await self.client.fetch_position(symbol=symbol, params=kwargs)
+            )
+        raise NotImplementedError("get_position is not implemented")
 
     async def get_funding_rate(self, symbol: str, **kwargs: dict) -> dict:
         return self.adapter.adapt_funding_rate(
@@ -449,7 +451,7 @@ async def set_symbol_margin_type(self, symbol: str, isolated: bool):
                                                  marginType=self.CCXT_ISOLATED if isolated else self.CCXT_CROSSED)
 
     async def set_symbol_position_mode(self, symbol: str, one_way: bool):
-        return await self.client.set_position_mode(self, hedged=not one_way, symbol=symbol)
+        return await self.client.set_position_mode(hedged=not one_way, symbol=symbol)
 
     async def set_symbol_partial_take_profit_stop_loss(self, symbol: str, inverse: bool,
                                                        tp_sl_mode: enums.TakeProfitStopLossMode):

octobot_trading/exchanges/traders/trader.pxd

@@ -40,4 +40,5 @@ cdef class Trader(util.Initializable):
     cpdef object set_risk(self, object risk)
     cpdef object convert_order_to_trade(self, object order)
 
-    cdef bint _has_open_position(self, str symbol)
+    # any() cant be cythonized
+    # cdef bool _has_open_position(self, str symbol)

octobot_trading/exchanges/traders/trader.py

@@ -670,5 +670,8 @@ def _has_open_position(self, symbol):
         :param symbol: the position symbol
         :return: True if open position for :symbol: exists
         """
-        return len(self.exchange_manager.exchange_personal_data.positions_manager.get_symbol_positions(
-            symbol=symbol)) != 0
+        return any(
+                position.size
+                for position in self.exchange_manager.exchange_personal_data.positions_manager.get_symbol_positions(
+                    symbol=symbol
+                ))