[java] elaborate more when session does not get created

[Delta456]

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Description

Elaborates SessionNotCreatedException error let the user know if not enough capabilities are passed

Motivation and Context

Fixes #14125 and as per the discussion. This seems to be the only way.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Bug fix

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Description

• Enhanced the error message for SessionNotCreatedException in RemoteWebDriver to include insufficient capabilities as a possible cause for session creation failure.
• This change aims to provide more informative feedback to users when a session fails to be created, addressing issue [🐛 Bug]: Selenium Grid cannot create a session without --enable-managed-downloads true #14125.

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Changes walkthrough 📝

	Relevant files
Bug fix	RemoteWebDriver.java Improve error message for session creation failure              java/src/org/openqa/selenium/remote/RemoteWebDriver.java Enhanced error message in SessionNotCreatedException. Added clarification on possible causes for session creation failure. +2/-2

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

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

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Error Message Update The PR updates the error message for SessionNotCreatedException to include "insufficient capabilities" as a possible cause. This change should be reviewed to ensure it accurately reflects all potential causes of session creation failure.

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
Best practice	Extract string constant to improve code maintainability Consider extracting the error message into a constant or a separate method to improve maintainability and reusability. java/src/org/openqa/selenium/remote/RemoteWebDriver.java [563-567] -toThrow = - new SessionNotCreatedException( - "Possible causes are invalid address of the remote server, insufficient" - + " capabilities provided or browser start-up failure.", - e); +private static final String SESSION_CREATION_ERROR_MESSAGE = + "Possible causes are invalid address of the remote server, insufficient " + + "capabilities provided or browser start-up failure."; +// In the method: +toThrow = new SessionNotCreatedException(SESSION_CREATION_ERROR_MESSAGE, e); + Apply this suggestion Suggestion importance[1-10]: 7 Why: Extracting the error message into a constant enhances maintainability by centralizing the message, making it easier to update in the future. This is a good practice for improving code readability and reducing duplication.	7
Performance	Use StringBuilder for efficient string concatenation Consider using a StringBuilder for concatenating multiple strings to improve performance, especially if this code is executed frequently. java/src/org/openqa/selenium/remote/RemoteWebDriver.java [563-567] -toThrow = - new SessionNotCreatedException( - "Possible causes are invalid address of the remote server, insufficient" - + " capabilities provided or browser start-up failure.", - e); +StringBuilder errorMessage = new StringBuilder() + .append("Possible causes are invalid address of the remote server, insufficient ") + .append("capabilities provided or browser start-up failure."); +toThrow = new SessionNotCreatedException(errorMessage.toString(), e); Apply this suggestion Suggestion importance[1-10]: 5 Why: While using StringBuilder can improve performance in scenarios with frequent string concatenation, the impact here is minimal since the concatenation occurs only once. The suggestion is correct but offers limited performance benefits in this context.	5

💡 Need additional feedback ? start a PR chat

[pujagani]

What type of insufficient capabilities would cause this?

[Delta456]

I believe any kind of insufficient capabilities will cause this as it seems to be in #14125

[pujagani]

Thank you for sharing. I think the error emphasises sharing the capabilities causing the error, which might not be possible or need to be shared as part of the exception. This message does not capture enough details to fix that issue and it also adds to the existing ambiguity. I am going to close this PR. Please look into how the capabilities causing the error can be shared out. Thank you!