Validate “spring.jpa.hibernate.ddl-auto” during springboot startup

Question

Is there a way to validate the "spring.jpa.hibernate.ddl-auto" property during application startup to ensure that it's set only to none? I want to force all deployments(including dev) to use liquibase.

Edit :- I also need to ensure that this property is not accidentally set in production, which could wipe out the data.

Answer 1

As a best practice, you can maintain a universal application.properties/yml file and set the property ( spring.jpa.hibernate.ddl-auto ) there. Afterwards, maintain a separate property/yml file ( application_*.properties/yml ) which will fetch the properties from application.properties/yml file, by default. Also, you can maintain other "common" properties in the parent file.

Answer 2

You can hook up on starting of your application by implementing ApplicationListener<ContextRefreshedEvent> class, like:

@Component
public class YourListner implements ApplicationListener<ContextRefreshedEvent> {

    @Value("${spring.jpa.properties.hibernate.ddl-auto}")
    private String hibernateDdlAuto;


    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {

        if (!"none".equalsIgnoreCase(hibernateDdlAuto))
            throw new MyValidationException();

    }
}

Moreover, you can even make it more verbose by registering your own FailureAnalyzer.