Clear database at startup while using flyway - mysql

Question

In my case, I'm using spring-boot with gradle and added flyway by simply putting compile 'org.flywaydb:flyway-core' to the build.gradle.
For a simulator run, which is in test, I would like to clear the database before each run. I've put a reset script in /src/test/resources/db/migration/V1.0__Reset.sql (with the real init sql-script at /src/main/resources/db/migration/V1.1__Init.sql), but receive a SyntaxException due to the reset script, which doesn't occur when I run it from the MySQL Workbench.
How can I reset or clear the database at startup?
-- UPDATE --
I've tried to use a Spring DataSourceInitializer, but it seems Flyway scripts are executed before the DS init, so it results in Hibernate Syntax error because the tables aren't found.
#Resource
DataSource ds;
#Bean
public DataSourceInitializer dbInit() throws FileNotFoundException, URISyntaxException {
public DataSourceInitializer dbInit() throws FileNotFoundException, URISyntaxException {
DataSourceInitializer re = new DataSourceInitializer();
re.setDataSource(ds);
re.setEnabled(true);
String str = "classpath:sql/V1.0__Reset.sql";
URL url = ResourceUtils.getURL(str);
org.springframework.core.io.Resource resi = new PathResource(url.toURI());
// new org.springframework.core.io.ClassPathResource(str)
re.setDatabasePopulator(new ResourceDatabasePopulator(resi));
return re;
}

Answer 1

Go for Flyway.clean(). It does exactly what you want. No need to write your own reset script.

Answer 2

You can use ApplicationRunner to run just after the startup and inside it do whatever you want with flyway. You'll also probably want to run migrate after clean:
#Component
public class CleanDatabase implements ApplicationRunner {
#Autowired
private Flyway flyway;
#Override
public void run(ApplicationArguments args) throws Exception {
flyway.clean();
flyway.migrate();
}
}