Pull Off the Splits with OpenRewrite
summary
Describes using OpenRewrite to automate EAP6→Quarkus migrations across ~800 applications and ~200 legacy backends by running a t-shirt sizing scan, generating git patches, and applying changes. Uses 30 catalog recipes plus 23 custom recipes to transform Javax→Jakarta, update POM dependencies, convert persistence.xml to application.yml and move properties, and migrate JUnit4 to JUnit Jupiter; one EAP6 sample compiled and booted on Quarkus after minor DB column typing fixes, whereas a manual migration was estimated to take 5–6 years.
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chapters (6)
- 0:00OpenRewrite introduction
- 3:10Modernization context and stakes
- 10:59OpenRewrite recipes demo
- 17:20EAP6 to Quarkus migration
- 26:21Custom recipes creation
- 30:38Conclusion and Q&A
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