java Playframework GlobalSettings deprecation for onStart

Question

I have annoying issue with Playframwork deprecated GlobalSettings issue, I want to move my conde inside onStart to suggested way, but Actually I ca

Answer 1

You need two classes - one to handle the initialization, and a module to register the binding.

The initialization code:

@Singleton
public class OnStartup {

    @Inject
    public OnStartup(final UserService userService) {
        if (userService.findUserByEmail("email@company.com") == null) {
            String email = "email@company.com";
            String password = "1234";
            String fullName = "My Name";
            User user = new User();
            user.password = BCrypt.hashpw(password, BCrypt.gensalt());
            user.full_name = fullName;
            user.email = email;
            user.save();
        }
    }
}

The module:

public class OnStartupModule extends AbstractModule {
    @Override
    public void configure() {
        bind(OnStartup.class).asEagerSingleton();
    }
}

Finally, add your module to application.conf.

play.modules.enabled += "com.example.modules.OnStartupModule"

By making the singleton eager, it will run when the application is starting up.