I'm trying to run a migration script in a Micronaut app configured with Flyway integration. The app runs as expected and applies the migration scripts without any Flyway placeholders. However, whenever I add a Flyway placeholder to a migration script the application does not start anymore due to a FlywayException:
org.flywaydb.core.api.FlywayException: No value provided for placeholder expressions: ${my_placeholder}. Check your configuration!
I've tried to configure the placeholder in application.yml using the Micronaut Flyway placeholders configuration property (as described here https://micronaut-projects.github.io/micronaut-flyway/latest/guide/index.html#io.micronaut.configuration.dbmigration.flyway.FlywayConfigurationProperties) but the placeholder simply isn't picked up. The application.yml file looks like this:
flyway:
datasources:
default:
locations: classpath:migrations
placeholders:
my_placeholder: "some value"
I've also tried creating a flyway.properties file with the placeholder defined according to what is described in this SO answer https://stackoverflow.com/a/9420671/2185719 but that did not work either
# flyway.properties
flyway.placeholders.my_placeholder=some value