Design

Rework DBaaSInstance/DBaaSProvide metrics based on the design proposal at this link

Development

This feature will be enhanced/developed in a manner similar to changes done in DBaaSInventory

Branch Link: https://github.com/rhkp/dbaas-operator/tree/dbaas-1060-dbaas-instance-metrics

PR Link: https://github.com/RHEcosystemAppEng/dbaas-operator/pull/295

Verification (on OpenShift Local) 

• Install the DBaaS Operator on a fresh OpenShift cluster.
• After successful installation expose the Prometheus service

oc project openshift-dbaas-operator
oc expose svc/prometheus-operated
oc get route 

• Navigate to Prometheus Service Route in the browser, select a metric such as "dbaas_requests_duration_seconds_sum" and see the resource="dbaas_provider" appear.
• Register MongoDB Provider and create a new MongoDB Instance by following DBaaS Operator User Guide. In the prometheus console, see the resource="dbaas_instance" appear.
• Note: The DBaaSProvider does not have delete handler in the controller, so the delete event is not possible.