Grails 3.x is based on Spring Boot comes with out-of-the-box integration for Flyway.
All you need to do is add flyway-core to your build.gradle:
compile "org.flywaydb:flyway-core:9.8.1"
Spring Boot will then automatically autowire Flyway with its DataSource and invoke it on startup.
You can then configure a good number of Flyway properties directly from your application.properties or application.yml file.
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