Add delete open order endpoint

freqtrade/rpc/rpc.py

@@ -812,6 +812,29 @@ class RPC:
             else:
                 raise RPCException(f'Failed to enter position for {pair}.')
 
+    def _rpc_cancel_open_order(self, trade_id: int):
+        if self._freqtrade.state != State.RUNNING:
+            raise RPCException('trader is not running')
+        with self._freqtrade._exit_lock:
+            # Query for trade
+            trade = Trade.get_trades(
+                trade_filter=[Trade.id == trade_id, Trade.is_open.is_(True), ]
+            ).first()
+            if not trade:
+                logger.warning('cancel_open_order: Invalid trade_id received.')
+                raise RPCException('Invalid trade_id')
+            if not trade.open_order_id:
+                logger.warning('cancel_open_order: No open order for trade_id.')
+                raise RPCException('No open order for trade_id')
+
+            try:
+                order = self._freqtrade.exchange.fetch_order(trade.open_order_id, trade.pair)
+            except ExchangeError as e:
+                logger.info(f"Cannot query order for {trade} due to {e}.", exc_info=True)
+                raise RPCException("Order not found.")
+            self._freqtrade.handle_cancel_order(order, trade, CANCEL_REASON['USER_CANCEL'])
+            Trade.commit()
+
     def _rpc_delete(self, trade_id: int) -> Dict[str, Union[str, int]]:
         """
         Handler for delete <id>.