DropWizard not registering my health check

Question

In my DropWizard (v0.7.0) app, I have a DummyHealthCheck like so:

public class DummyHealthCheck extends HealthCheck {
    @Override
    protected Result check() throws Exception {
        return Result.healthy();
    }
}

Then in my main Application impl:

public class MyApplication extends Application<MyConfiguration> {
    @Override
    public void run(MyConfiguration configuration, Environment environment)
            throws Exception {
        environment.jersey().register(new DummyHealthCheck());
    }
}

When I start up the server, it starts successfuly (no exceptions/errors), however I get the following message:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!    THIS APPLICATION HAS NO HEALTHCHECKS. THIS MEANS YOU WILL NEVER KNOW      !
!     IF IT DIES IN PRODUCTION, WHICH MEANS YOU WILL NEVER KNOW IF YOU'RE      !
!    LETTING YOUR USERS DOWN. YOU SHOULD ADD A HEALTHCHECK FOR EACH OF YOUR    !
!         APPLICATION'S DEPENDENCIES WHICH FULLY (BUT LIGHTLY) TESTS IT.       !
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

But when I go to http://localhost:8081/healthcheck I see:

{"deadlocks":{"healthy":true}}

1. What is going on here? How do I register my health check?
2. Also, I have configured DropWizard to use SSL (self-signed) on port 8443; I have verified this works with my normal endpoints. I am surprised, however, to see that my admin app is still exposed on 8081 over HTTP. How do I configure it for HTTPS as well?

Answer 1

Question 1:

You don't register it with Jersey, as Health Checks are DropWizard specific. They should be registered as follows

environment.healthChecks().register("dummy", new DummyHealthCheck());

as explained here. If it was registered as above, you would see

{"deadlocks":{"healthy":true}, "dummy":{"healthy":true}}

Question 2:

I assume you already have done something similar to

server:
  applicationConnectors:
    - type: https
      port: 8443
      keyStorePath: example.keystore
      keyStorePassword: example
      validateCerts: false

in your yaml, as seen here. That is just for the application. You will also need to configure the admin

server:
  applicationConnectors:
  - ...
  adminConnectors:
  - type: https
    port: 8444    // should a different port from the application
    keyStorePath: example.keystore
    keyStorePassword: example
    validateCerts: false