Question

Is there a way to intercept calls to a Play Mailer class?

I would like to log all emails my application sends. I’d like to access the mailer method parameters and method name, and log all these.

I have tried using @With, but my @Before method is not called:

@With(EmailInterceptor.class)
public class Mails extends Mailer {

    public static void welcome(User user) {
        setSubject("Welcome to my app");
        setFrom("Me <[e-mail]>");
        addRecipient(user.email);

        Mailer.send(user);
    }
}

public final class EmailInterceptor extends UserAwareControllerBase {
    private final static Logger logger = LoggerHelper.getLogger();

    @Before
    public void logEmail(){
        String email = getUser() == null ? "<null>" : getUser().email;
        logger.info("Sending email to " + email);
    }
}

Answer 1

AFAIK there is no intercepts for Mailer. Check the https://github.com/playframework/play/blob/master/framework/src/play/mvc/ActionInvoker.java. Go to line 142, that clearly indicate only Controller will get intercepts.