#PostConstruct method runs before flyway - spring

Question

I know this kind of question has been asked before.
I have a method which is annotated with #PostConstruct.
The methods assumes that all Flyway scripts have been executed before invocation.
It seems that Flyway also uses #PostConstruct annotated methods and that these methods are called after my method.
I tried to annotate my method with #DependOn and different flyway beennames.
Unfortunately without success. Can anybody help me.

Answer 1

Solution:
I would set a dependency on the FlywayMigrationInitializer in the constructor. When the Initializer is created and set up, the migrations are run.
Or you can depend on the flywayInitializer bean (#DependsOn("flywayInitializer")). The bean is named flywayInitializer, of the class FlywayMigrationInitializer and it is created in FlywayAutoConfiguration.java.
FlywayMigrationInitializer implements InitializingBean and calls the migrate method in the afterPropertiesSet method.
Example:
#Component
// #DependsOn("flywayInitializer")
#Slf4j
public class TestPostConstruct {
public TestPostConstruct(FlywayMigrationInitializer flywayForceInitialization) {
}
#PostConstruct
public void testPostConstruct() {
log.info("----> in testPostConstruct");
}
}
The Spring Boot log:
INFO 4760 --- [main] o.f.core.internal.command.DbMigrate : Successfully applied 1 migration to schema "PUBLIC" (execution time 00:00.130s)
INFO 4760 --- [main] c.example.flywayinit.TestPostConstruct : ----> in testPostConstruct

Answer 2

For new Flyway this work (use Flyway callbacks)
#Configuration
class FlywayConfig(env: Environment) {
private val env: Environment
init {
this.env = env
}
#Bean(initMethod = "migrate")
fun flyway(dbLoadService: DbLoadService): Flyway {
return Flyway(
Flyway.configure()
.baselineOnMigrate(true)
.dataSource(
env.getRequiredProperty("spring.datasource.url"),
env.getRequiredProperty("spring.datasource.username"),
env.getRequiredProperty("spring.datasource.password")
)
//запуск загрузки из базы после окончания миграции
.callbacks(FlywayMigrationsCompleteCallback {
dbLoadService.loadAllCertificateInformation()
})
)
}
class FlywayMigrationsCompleteCallback(private val callback: () -> Unit) : Callback {
override fun supports(event: Event?, context: Context?): Boolean {
return event == Event.AFTER_MIGRATE
}
override fun canHandleInTransaction(event: Event?, context: Context?): Boolean {
return true
}
override fun handle(event: Event?, context: Context?) {
callback()
}
override fun getCallbackName(): String {
return FlywayMigrationsCompleteCallback::class.simpleName!!
}
}
#Component
class DbLoadService(private val certificateRepository:CertificateRepository) {
#Volatile var certificate: List<Certificate>?=null
fun loadAllCertificateInformation(){
val findAll = certificateRepository.findAll()
runBlocking {
certificate = findAll.toList()
}
}
}