Struct valueFunc

prometheus/value.go:64–71

valueFunc is a generic metric for simple values retrieved on collect time from a function. It implements Metric and Collector. Its effective type is determined by ValueType. This is a low-level building block used by the library to back the implementations of CounterFunc, GaugeFunc, and UntypedFunc.

// library to back the implementations of CounterFunc, GaugeFunc, and
// UntypedFunc.
type valueFunc struct {
	selfCollector

	desc       *Desc
	valType    ValueType
	function   func() float64
	labelPairs []*dto.LabelPair
}

// newValueFunc returns a newly allocated valueFunc with the given Desc and
// ValueType. The value reported is determined by calling the given function