in the bussiness -but wip
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Dobromir Popov
@ -149,7 +149,7 @@ class MEXCInterface(ExchangeInterface):
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return {}
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def _send_private_request(self, method: str, endpoint: str, params: Optional[Dict[str, Any]] = None) -> Optional[Dict[str, Any]]:
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"""Send a private request to the exchange with proper signature"""
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"""Send a private request to the exchange with proper signature and MEXC error handling"""
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if params is None:
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params = {}
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@ -191,8 +191,51 @@ class MEXCInterface(ExchangeInterface):
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if response.status_code == 200:
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return response.json()
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else:
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logger.error(f"API error: Status Code: {response.status_code}, Response: {response.text}")
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return None
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# Parse error response for specific error codes
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try:
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error_data = response.json()
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error_code = error_data.get('code')
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error_msg = error_data.get('msg', 'Unknown error')
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# Handle specific MEXC error codes
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if error_code == 30005: # Oversold
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logger.warning(f"MEXC Oversold detected (Code 30005) for {endpoint}. This indicates risk control measures are active.")
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logger.warning(f"Possible causes: Market manipulation detection, abnormal trading patterns, or position limits.")
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logger.warning(f"Action: Waiting before retry and reducing position size if needed.")
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# For oversold errors, we should not retry immediately
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# Return a special error structure that the trading executor can handle
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return {
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'error': 'oversold',
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'code': 30005,
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'message': error_msg,
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'retry_after': 60 # Suggest waiting 60 seconds
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}
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elif error_code == 30001: # Transaction direction not allowed
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logger.error(f"MEXC: Transaction direction not allowed for {endpoint}")
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return {
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'error': 'direction_not_allowed',
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'code': 30001,
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'message': error_msg
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}
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elif error_code == 30004: # Insufficient position
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logger.error(f"MEXC: Insufficient position for {endpoint}")
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return {
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'error': 'insufficient_position',
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'code': 30004,
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'message': error_msg
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}
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else:
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logger.error(f"MEXC API error: Code: {error_code}, Message: {error_msg}")
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return {
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'error': 'api_error',
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'code': error_code,
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'message': error_msg
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}
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except:
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# Fallback if response is not JSON
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logger.error(f"API error: Status Code: {response.status_code}, Response: {response.text}")
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return None
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except requests.exceptions.HTTPError as http_err:
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logger.error(f"HTTP error for {endpoint}: Status Code: {response.status_code}, Response: {response.text}")
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@ -297,75 +340,92 @@ class MEXCInterface(ExchangeInterface):
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def place_order(self, symbol: str, side: str, order_type: str, quantity: float, price: Optional[float] = None) -> Dict[str, Any]:
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"""Place a new order on MEXC."""
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formatted_symbol = self._format_spot_symbol(symbol)
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# Check if symbol is supported for API trading
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if not self.is_symbol_supported(symbol):
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supported_symbols = self.get_api_symbols()
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logger.error(f"Symbol {formatted_symbol} is not supported for API trading")
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logger.info(f"Supported symbols include: {supported_symbols[:10]}...") # Show first 10
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return {}
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# Round quantity to MEXC precision requirements and ensure minimum order value
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# MEXC ETHUSDC requires precision based on baseAssetPrecision (5 decimals for ETH)
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if 'ETH' in formatted_symbol:
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quantity = round(quantity, 5) # MEXC ETHUSDC precision: 5 decimals
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# Ensure minimum order value (typically $10+ for MEXC)
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 5) # Adjust to minimum $10 order
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elif 'BTC' in formatted_symbol:
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quantity = round(quantity, 6) # MEXC BTCUSDC precision: 6 decimals
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 6) # Adjust to minimum $10 order
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else:
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quantity = round(quantity, 5) # Default precision for MEXC
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 5) # Adjust to minimum $10 order
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# MEXC doesn't support MARKET orders for many pairs - use LIMIT orders instead
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if order_type.upper() == 'MARKET':
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# Convert market order to limit order with aggressive pricing for immediate execution
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if price is None:
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ticker = self.get_ticker(symbol)
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if ticker and 'last' in ticker:
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current_price = float(ticker['last'])
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# For buy orders, use slightly above market to ensure immediate execution
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# For sell orders, use slightly below market to ensure immediate execution
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if side.upper() == 'BUY':
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price = current_price * 1.002 # 0.2% premium for immediate buy execution
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else:
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price = current_price * 0.998 # 0.2% discount for immediate sell execution
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else:
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logger.error("Cannot get current price for market order conversion")
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return {}
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try:
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logger.info(f"MEXC: place_order called with symbol={symbol}, side={side}, order_type={order_type}, quantity={quantity}, price={price}")
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# Convert to limit order with immediate execution pricing
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order_type = 'LIMIT'
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logger.info(f"MEXC: Converting MARKET to aggressive LIMIT order at ${price:.2f} for immediate execution")
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formatted_symbol = self._format_spot_symbol(symbol)
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logger.info(f"MEXC: Formatted symbol: {symbol} -> {formatted_symbol}")
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# Check if symbol is supported for API trading
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if not self.is_symbol_supported(symbol):
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supported_symbols = self.get_api_symbols()
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logger.error(f"Symbol {formatted_symbol} is not supported for API trading")
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logger.info(f"Supported symbols include: {supported_symbols[:10]}...") # Show first 10
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return {}
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# Round quantity to MEXC precision requirements and ensure minimum order value
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# MEXC ETHUSDC requires precision based on baseAssetPrecision (5 decimals for ETH)
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original_quantity = quantity
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if 'ETH' in formatted_symbol:
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quantity = round(quantity, 5) # MEXC ETHUSDC precision: 5 decimals
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# Ensure minimum order value (typically $10+ for MEXC)
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 5) # Adjust to minimum $10 order
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elif 'BTC' in formatted_symbol:
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quantity = round(quantity, 6) # MEXC BTCUSDC precision: 6 decimals
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 6) # Adjust to minimum $10 order
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else:
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quantity = round(quantity, 5) # Default precision for MEXC
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if price and quantity * price < 10.0:
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quantity = round(10.0 / price, 5) # Adjust to minimum $10 order
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if quantity != original_quantity:
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logger.info(f"MEXC: Adjusted quantity: {original_quantity} -> {quantity}")
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# MEXC doesn't support MARKET orders for many pairs - use LIMIT orders instead
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if order_type.upper() == 'MARKET':
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# Convert market order to limit order with aggressive pricing for immediate execution
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if price is None:
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ticker = self.get_ticker(symbol)
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if ticker and 'last' in ticker:
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current_price = float(ticker['last'])
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# For buy orders, use slightly above market to ensure immediate execution
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# For sell orders, use slightly below market to ensure immediate execution
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if side.upper() == 'BUY':
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price = current_price * 1.002 # 0.2% premium for immediate buy execution
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else:
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price = current_price * 0.998 # 0.2% discount for immediate sell execution
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else:
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logger.error("Cannot get current price for market order conversion")
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return {}
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# Convert to limit order with immediate execution pricing
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order_type = 'LIMIT'
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logger.info(f"MEXC: Converting MARKET to aggressive LIMIT order at ${price:.2f} for immediate execution")
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# Prepare order parameters
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params = {
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'symbol': formatted_symbol,
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'side': side.upper(),
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'type': order_type.upper(),
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'quantity': str(quantity) # Quantity must be a string
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}
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if price is not None:
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# Format price to remove unnecessary decimal places (e.g., 2900.0 -> 2900)
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params['price'] = str(int(price)) if price == int(price) else str(price)
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# Prepare order parameters
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params = {
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'symbol': formatted_symbol,
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'side': side.upper(),
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'type': order_type.upper(),
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'quantity': str(quantity) # Quantity must be a string
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}
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if price is not None:
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# Format price to remove unnecessary decimal places (e.g., 2900.0 -> 2900)
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params['price'] = str(int(price)) if price == int(price) else str(price)
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logger.info(f"MEXC: Placing {side.upper()} {order_type.upper()} order for {quantity} {formatted_symbol} at price {price}")
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# Use the standard private request method which handles timestamp and signature
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endpoint = "order"
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result = self._send_private_request("POST", endpoint, params)
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if result:
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logger.info(f"MEXC: Order placed successfully: {result}")
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return result
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else:
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logger.error(f"MEXC: Failed to place order")
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logger.info(f"MEXC: Placing {side.upper()} {order_type.upper()} order for {quantity} {formatted_symbol} at price {price}")
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logger.info(f"MEXC: Order parameters: {params}")
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# Use the standard private request method which handles timestamp and signature
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endpoint = "order"
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result = self._send_private_request("POST", endpoint, params)
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if result:
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logger.info(f"MEXC: Order placed successfully: {result}")
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return result
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else:
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logger.error(f"MEXC: Failed to place order - _send_private_request returned None/empty result")
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logger.error(f"MEXC: Failed order details - symbol: {formatted_symbol}, side: {side}, type: {order_type}, quantity: {quantity}, price: {price}")
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return {}
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except Exception as e:
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logger.error(f"MEXC: Exception in place_order: {e}")
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logger.error(f"MEXC: Exception details - symbol: {symbol}, side: {side}, type: {order_type}, quantity: {quantity}, price: {price}")
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import traceback
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logger.error(f"MEXC: Full traceback: {traceback.format_exc()}")
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return {}
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def cancel_order(self, symbol: str, order_id: str) -> Dict[str, Any]:
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