Pull Off the Split: Succeeding with OpenRewrite
summary
OpenRewrite is used to automate migrating ~800 EAP6 Java EE backends to Quarkus instead of a manual 5–6 year rewrite. The process scans repositories to produce t-shirt size effort estimates, runs dry‑runs that generate git‑format patches, applies about 30 catalog and 23 custom Rewrite recipes to upgrade Log4j and JUnit4→5, convert persistence.xml to application.yml, change javax→jakarta and replace EJB annotations with CDI, then build and run the apps on Quarkus.
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chapters (7)
- 0:00OpenRewrite introduction
- 3:37Migration context and stakes
- 8:52OpenRewrite recipes demo
- 13:53Quarkus migration with OpenRewrite
- 17:48Full migration demo
- 28:54Custom recipes creation
- 33:10Conclusion and Q&A
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