code: func recordOpenstackOperationMetric(operation string, timeTaken float64, err error) {
  	if err != nil {
  		openstackAPIRequestErrors.With(prometheus.Labels{"request": operation}).Inc()
  	} else {
  		openstackOperationsLatency.With(prometheus.Labels{"request": operation}).Observe(timeTaken)
  	}
  }
docs: // recordOpenstackOperationMetric records openstack operation metrics