[py]: return message as part of exception in execute method

[navin772]

User description

🔗 Related Issues

💥 What does this PR do?

Returns a meaningful error and message when an exception is raised in the WebSocketConnection execute method.

Earlier only 'error': 'unknown error' exception was raised which doesn't provides any good error message.

Now, its much better:

Exception: unknown error: No such file or directory: /private/var/tmp/_bazel_navinchandra/a5b294e127f7c14e5d2a4b14aeba0f68/....

🔧 Implementation Notes

💡 Additional Considerations

🔄 Types of changes

• Bug fix (backwards compatible)

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PR Type

Bug fix

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Description

• Improve exception handling in WebSocketConnection execute

• Include error message in raised exceptions for clarity

• Enhance debugging by surfacing server-side error details

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Changes walkthrough 📝

	Relevant files
Bug fix	websocket_connection.py Enhance exception message handling in WebSocketConnection py/selenium/webdriver/remote/websocket_connection.py Enhanced exception to include error message if present Now raises detailed error combining 'error' and 'message' fields Improves clarity of exceptions from WebSocket responses +6/-1

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis ❌ 5678 - Partially compliant Compliant requirements: • Provide more meaningful error messages for connection issues Non-compliant requirements: • Fix the "Error: ConnectFailure (Connection refused)" issue when instantiating ChromeDriver multiple times Requires further human verification: • Support Ubuntu 16.04.4 with Chrome 65.0.3325.181 and ChromeDriver 2.35 1234 - Not compliant Non-compliant requirements: • Fix issue with Firefox 42.0 not triggering JavaScript in link's href on click() in Selenium 2.48

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Exception Handling The PR improves error reporting but uses generic Exception class. Consider using a more specific exception type like WebDriverException for better error handling by client code. raise Exception(error_msg) else: raise Exception(error)

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Learned best practice	✅ Use specific exception types Suggestion Impact: The commit implemented the suggestion by replacing generic Exception with WebDriverException in three places: two in the error handling code for WebSocket responses (lines 14-18) and one additional place in the _deserialize_result method (line 27) code diff: + +from selenium.common import WebDriverException logger = logging.getLogger(__name__) @@ -68,9 +70,9 @@ error = response["error"] if "message" in response: error_msg = f"{error}: {response['message']}" - raise Exception(error_msg) + raise WebDriverException(error_msg) else: - raise Exception(error) + raise WebDriverException(error) else: result = response["result"] return self._deserialize_result(result, command) @@ -102,7 +104,7 @@ def _deserialize_result(self, result, command): try: _ = command.send(result) - raise Exception("The command's generator function did not exit when expected!") + raise WebDriverException("The command's generator function did not exit when expected!") Use a more specific exception type instead of the generic Exception class. Consider using a custom exception or a more specific built-in exception that better represents the error condition from the WebSocket response. py/selenium/webdriver/remote/websocket_connection.py [67-73] if "error" in response: error = response["error"] if "message" in response: error_msg = f"{error}: {response['message']}" - raise Exception(error_msg) + raise WebDriverException(error_msg) else: - raise Exception(error) + raise WebDriverException(error) [Suggestion processed] Suggestion importance[1-10]: 6 __ Why: Relevant best practice - Fix inconsistent error messages and validation logic. Ensure error messages are clear, accurate, and provide specific information about the error condition.	Low
General	Remove unnecessary variable The current implementation creates a variable error_msg only to use it once immediately. Simplify the code by raising the exception directly with the formatted error message to improve readability and reduce unnecessary variables. py/selenium/webdriver/remote/websocket_connection.py [67-73] if "error" in response: error = response["error"] if "message" in response: - error_msg = f"{error}: {response['message']}" - raise Exception(error_msg) + raise Exception(f"{error}: {response['message']}") else: raise Exception(error) Apply / Chat Suggestion importance[1-10]: 5 __ Why: The suggestion improves code readability by eliminating an unnecessary variable, but it does not affect functionality or correctness, making it a minor style enhancement.	Low
Update

[cgoldberg]

This looks fine, but it should probably raise WebDriverException instead of a generic Exception.

Same thing in the _deserialize_result method in that file... if you want to fix that while you're in there.

[p0deje]

Agree with @cgoldberg, let's change to WebDriverException.

[cgoldberg]

👍