Add exceptions module

mt5bridge_ccxt/exceptions.py

@@ -0,0 +1,58 @@
+"""Custom exceptions for mt5bridge-ccxt.
+
+All exceptions inherit from Mt5BridgeError so callers can catch the
+base class for any wrapper-related failure.
+"""
+
+from ccxt.base.errors import (
+    ExchangeError,
+    AuthenticationError,
+    NetworkError,
+    ExchangeNotAvailable,
+    InvalidOrder,
+    OrderNotFound,
+    BadSymbol,
+    BadRequest,
+    ArgumentsRequired,
+)
+
+
+class Mt5BridgeError(ExchangeError):
+    """Base exception for all MT5Bridge-related errors."""
+
+
+class Mt5BridgeConnectionError(NetworkError):
+    """Connection to MT5Bridge failed (host unreachable, timeout, etc.)."""
+
+
+class Mt5BridgeAuthError(AuthenticationError):
+    """Authentication failed (HTTP 401). Check your API key."""
+
+
+class Mt5BridgeNotConnectedError(ExchangeNotAvailable):
+    """MT5 client is not connected to the broker (HTTP 503)."""
+
+
+class Mt5BridgeInvalidRequestError(BadRequest):
+    """Invalid request parameters (HTTP 400)."""
+
+
+class Mt5BridgeTimeoutError(NetworkError):
+    """Request to MT5Bridge timed out."""
+
+
+# Re-export ccxt exceptions for convenience
+__all__ = [
+    "Mt5BridgeError",
+    "Mt5BridgeConnectionError",
+    "Mt5BridgeAuthError",
+    "Mt5BridgeNotConnectedError",
+    "Mt5BridgeInvalidRequestError",
+    "Mt5BridgeTimeoutError",
+    "InvalidOrder",
+    "OrderNotFound",
+    "BadSymbol",
+    "BadRequest",
+    "ArgumentsRequired",
+    "ExchangeError",
+]