#816 Fix the reliance on log4j libraries in the classpath FileStreamer by switching logging to slf4j interfaces.

[yruslan]

Closes #816

Summary by CodeRabbit

• Chores
  • Updated internal logging infrastructure for improved compatibility and maintainability.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

Replaces direct Apache Log4j Logger usage with SLF4J LoggerFactory in FileStreamer.scala. This updates the logging backend to support multiple logging implementations and resolves compatibility issues with certain logging configurations.

Changes

Cohort / File(s)	Summary
Logging backend migration spark-cobol/src/main/scala/za/co/absa/cobrix/spark/cobol/source/streaming/FileStreamer.scala	Switched from Apache Log4j Logger.getLogger() to SLF4J LoggerFactory.getLogger(); updated imports to use SLF4J for broader logging mechanism support

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A rabbit hops through logs so bright,
From Log4j's way to SLF4J's light,
No more crashes in the night,
Better backends, oh what a sight! 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically describes the main change: switching FileStreamer logging from Log4j to SLF4J to fix a runtime dependency issue.
Linked Issues check	✅ Passed	The pull request directly addresses issue #816 by replacing Log4j Logger with SLF4J LoggerFactory in FileStreamer, removing the direct dependency on Log4j APIs that caused the NoSuchMethodError.
Out of Scope Changes check	✅ Passed	All changes are focused on replacing the logging mechanism in FileStreamer as required; no unrelated modifications are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

JaCoCo code coverage report - 'cobol-parser'

Overall Project	91.62%	🍏

There is no coverage information present for the Files changed

[github-actions]

JaCoCo code coverage report - 'spark-cobol'

Overall Project	81.96%	🍏
Files changed	100%	🍏

File	Coverage
FileStreamer.scala	99.07%	🍏