NIFI-15331 Fix Script Engine property name migration from 2.7.0

[exceptionfactory]

Summary

NIFI-15331 Corrects property name migration for scripting components when upgrading from NiFi 2.7.0 with a configured value for the Script Engine property.

Changes implemented for NIFI-15317 addressed scenarios when upgrading from NiFi 2.6.0 or earlier, and when upgrading from NiFi 2.7.0 after setting a corrected value, but did not address the scenario where the interim property name remained uncorrected.

Additional updates modify ScriptingComponentHelper.migrateProperties() to check for a configured value of Script Engine and remove the Script Language property. New tests for that method and representative referencing components verify the expected behavior.

Tracking

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Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
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Build

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  • JDK 21
  • JDK 25

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[pvillard31]

LGTM, thanks @exceptionfactory - @dan-s1 feel free to merge if you're happy with it

[dan-s1]

LGTM +1. I reviewed the code, built it and it solved the issue I had reported. Thanks @exceptionfactory for the quick fix!