Access to CustomResourceCache

We are looking to implement metrics over the custom resource managed by the operator and would like to avoid k8s api calls if possible. It seems that the cache could be utilized either directly or indirectly for this purpose. Directly would look like having access in the Controller, possibly via the init method - then we could use that to drive simple metrics count, and checks based upon the resource Status. Indirect access would be related to https://github.com/java-operator-sdk/java-operator-sdk/issues/323 - such that count and other readily definable metrics are automatically exposed.