DUPLO-13650 Elide err when nil from fatal messages

[duplodavid]

User description

Change description

Fatal error messages will no longer append the err object to the end when it is nil.

This would appear as " %!s()" which looks like something went terribly wrong.

Type of change

• Bug fix (fixes an issue)
• New feature (adds functionality)

Related issues

Fix DUPLO-13650

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Type

Bug fix

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Description

• The PR primarily focuses on improving error handling in the application.
• In cmd/duplo-jit/main.go, the error message format has been enhanced when a tenant is missing or not allowed.
• In internal/util.go, the Fatal function has been modified to prevent appending a nil error object to the error message.

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Changes walkthrough

	Relevant files
Error handling	main.go Enhanced Error Message Format for Missing Tenants                                cmd/duplo-jit/main.go Improved the error message format when a tenant is missing or not allowed. +2/-2      util.go Prevented Nil Error Object in Fatal Messages                                          internal/util.go Modified the Fatal function to not append the error object when it is nil. +4/-1

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PR Description updated to latest commit (dd17024)

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PR Analysis

• 🎯 Main theme: Improving error handling in the application
• 📝 PR summary: This PR focuses on improving the error handling in the application. It enhances the error message format when a tenant is missing or not allowed in cmd/duplo-jit/main.go. Additionally, it modifies the Fatal function in internal/util.go to prevent appending a nil error object to the error message.
• 📌 Type of PR: Bug fix
• 🧪 Relevant tests added: No
• ⏱️ Estimated effort to review [1-5]: 1, because the changes are straightforward and limited to error message formatting and handling.
• 🔒 Security concerns: No security concerns found

PR Feedback

💡 General suggestions: The changes made in this PR are clear and concise. However, it would be beneficial to add tests to verify the correct behavior of the updated error handling.

🤖 Code feedback:

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relevant file	cmd/duplo-jit/main.go
suggestion	Consider using a constant for the error message format to avoid repetition. [medium]
relevant line	internal.Fatal(fmt.Sprintf("tenant '%s' missing or not allowed", tenantName), err)

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relevant file	internal/util.go
suggestion	It might be more efficient to use log.Fatal directly when err is nil instead of using an if condition. [medium]
relevant line	if err != nil {

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