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Image Credit: Slack
Migration Automation: Easing the Jenkins → GHA shift with help from AI
- Slack's CI has moved from Jenkins to GitHub Actions and an intern created a conversion tool that could automatically migrate Jenkins pipelines to GitHub Actions.
- The tool is expected to cut migration time by half and to save over 1,300 hours.
- The successful project is focused on the conversion tool and the 7 week journey to design, implement, and improve it.
- A few useful tools were identified for the company to convert Jenkins to GHA including the GitHub Actions Importer.
- Python scripting will be used and Large Language Models (LLMs) were used for any errors that could not be fixed with regular expressions.
- The implementation of the corrections tool, to correct the Importer’s workflows, ends with the bird's eye view and the implementation architecture.
- The impact of the tool is discussed with projected savings of over 1,300 hours and is projected to save 80% of the time to move every Jenkins pipeline to GHA.
- End-user feedback on the tool has arrived and there are a few errors in the generated workflows. However, Slack's internal communication and collaboration have proven effective in updating solutions.
- Slack is currently hiring GHA specialists.
- The conversion from Jenkins to GHA has enabled Slack developers to have workflow files with few, if any, flaws.
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