Spring - Choose repository implementation after bean creation - spring

Question

I'm developing Spring Boot application which persists data into MS SQL database. I'm tasked to add support for PostgreSQL, which uses same tables. So my goal is to add another repository layer implementation. But things gets little bit complicated.
It would be great if my repository layer could look like this:
public interface RecordRepository {
Record get(long id);
}
#Repository
#Conditional(MsSqlCondition.class)
public interface MsSqlRecordRepository {
public Record get(long id) {
// MS SQL implementation...
}
}
#Repository
#Conditional(PostgreSqlCondition.class)
public interface PostgreSqlRecordRepository {
public Record get(long id) {
// PostgreSql implementation...
}
}
However, it seems to not be possible in my case.
First of all, my application doesn't have database configuration in application.yaml file. It has to get these variables from remote HTTP server. My #Configuration file looks something like this:
#Configuration
public class MyAppConfiguration {
#Bean
public DatabaseConfiguration databaseConfiguration() {
// Make HTTP request to remote server
if (something) {
return new MsSqlServerConfiguration(...);
} else {
return new PostgreSqlServerConfiguration(...);
}
}
}
With this approach, I'm unable to use #Conditional annotation for my DataSource and repository beans, since #Conditional is evaluated while parsing #Configuration files. I need to choose right implementation AFTER DatabaseConfiguration bean is created.
I already considered this approach:
#Configuration
public class RepositoryConfiguration {
#Bean
public RecordRepository(DatabaseConfiguration configuration, JdbcTemplate jdbcTemplate) {
if (configuration.getType() == MS_SQL) {
return new MsSqlRecordRepository(jdbcTemplate);
} else {
return new PostgreSqlRecordRepository(jdbcTemplate);
}
}
}
But this seems that it is not working for me either, sice I'm using Spring AOP for my repository classes.
Does Spring Boot have some other mechanism, which allows me to choose right repository implementation after my DatabaseConfiguration bean is created?
Thanks