Update Huobi stoploss to shared method

freqtrade/exchange/huobi.py

@@ -2,12 +2,7 @@
 import logging
 from typing import Dict
 
-import ccxt
-
-from freqtrade.exceptions import (DDosProtection, InsufficientFundsError, InvalidOrderException,
-                                  OperationalException, TemporaryError)
 from freqtrade.exchange import Exchange
-from freqtrade.exchange.common import retrier
 
 
 logger = logging.getLogger(__name__)
@@ -21,6 +16,7 @@ class Huobi(Exchange):
 
     _ft_has: Dict = {
         "stoploss_on_exchange": True,
+        "stoploss_order_types": {"limit": "stop-limit"},
         "ohlcv_candle_limit": 1000,
     }
 
@@ -31,64 +27,11 @@ class Huobi(Exchange):
         """
         return order['type'] == 'stop' and stop_loss > float(order['stopPrice'])
 
-    @retrier(retries=0)
-    def stoploss(self, pair: str, amount: float, stop_price: float, order_types: Dict) -> Dict:
-        """
-        creates a stoploss limit order.
-        this stoploss-limit is huobi-specific.
-        TODO: Compare this with other stoploss implementations -
-        """
-        # Limit price threshold: As limit price should always be below stop-price
-        limit_price_pct = order_types.get('stoploss_on_exchange_limit_ratio', 0.99)
-        rate = stop_price * limit_price_pct
+    def _get_stop_params(self, ordertype: str, stop_price: float) -> Dict:
 
-        ordertype = "stop-limit"
-
-        stop_price = self.price_to_precision(pair, stop_price)
-
-        # Ensure rate is less than stop price
-        if stop_price <= rate:
-            raise OperationalException(
-                'In stoploss limit order, stop price should be more than limit price')
-
-        if self._config['dry_run']:
-            dry_order = self.create_dry_run_order(
-                pair, ordertype, "sell", amount, stop_price)
-            return dry_order
-
-        try:
-            params = self._params.copy()
-            params.update({
-                "stopPrice": stop_price,
-                "operator": "lte",
-                })
-
-            amount = self.amount_to_precision(pair, amount)
-
-            rate = self.price_to_precision(pair, rate)
-
-            order = self._api.create_order(symbol=pair, type=ordertype, side='sell',
-                                           amount=amount, price=rate, params=params)
-            logger.info('stoploss limit order added for %s. '
-                        'stop price: %s. limit: %s', pair, stop_price, rate)
-            self._log_exchange_response('create_stoploss_order', order)
-            return order
-        except ccxt.InsufficientFunds as e:
-            raise InsufficientFundsError(
-                f'Insufficient funds to create {ordertype} sell order on market {pair}. '
-                f'Tried to sell amount {amount} at rate {rate}. '
-                f'Message: {e}') from e
-        except ccxt.InvalidOrder as e:
-            # Errors:
-            # `Order would trigger immediately.`
-            raise InvalidOrderException(
-                f'Could not create {ordertype} sell order on market {pair}. '
-                f'Tried to sell amount {amount} at rate {rate}. '
-                f'Message: {e}') from e
-        except ccxt.DDoSProtection as e:
-            raise DDosProtection(e) from e
-        except (ccxt.NetworkError, ccxt.ExchangeError) as e:
-            raise TemporaryError(
-                f'Could not place sell order due to {e.__class__.__name__}. Message: {e}') from e
-        except ccxt.BaseError as e:
-            raise OperationalException(e) from e
+        params = self._params.copy()
+        params.update({
+            "stopPrice": stop_price,
+            "operator": "lte",
+        })
+        return params

tests/exchange/test_huobi.py

@@ -48,7 +48,7 @@ def test_stoploss_order_huobi(default_conf, mocker, limitratio, expected):
     assert api_mock.create_order.call_args_list[0][1]['amount'] == 1
     # Price should be 1% below stopprice
     assert api_mock.create_order.call_args_list[0][1]['price'] == expected
-    assert api_mock.create_order.call_args_list[0][1]['params'] == {"stop-price": 220,
+    assert api_mock.create_order.call_args_list[0][1]['params'] == {"stopPrice": 220,
                                                                     "operator": "lte",
                                                                     }