value

type Histogram struct {
	Simple
	SampleCount uint64
	BucketHits  []uint64
}

type Metric interface {
	// Export() constructs a dto.Metric from a value.Metric, the label names
	// in a label.Set, and the label values encoded in a label.RuneList.
	Export(
		metricKind mon.MetricKind,
		valueType mon.ValueType,
		ls *label.Set,
		rl label.RuneList,
		bounds []float64,
	) dto.Metric

	// Copy() returns a deep, read-only copy of a value.Metric.
	Copy(time.Duration) Metric

	// Float() returns the float64 value of the value.Metric (for histograms,
	// this is the sum of the observations).
	Float() float64

	// GcpEpoch() returns the Unix epoch seconds of the "end" timestamp of
	// the metric as reported by GCP.  This usually equals the end of the
	// most recent available sample period (except for Gauge metrics that
	// usually have metric values with startTime == endTime and sometimes
	// multiple such values in a single sample period).
	//
	GcpEpoch() int64

	// IsReadOnly() returns true if the value is a read-only copy.  It
	// returns false if the value can receive updates.
	IsReadOnly() bool

	// AsReadOnly() returns the invocant but type-cast to be read-only.
	AsReadOnly() Metric
}

type RwHistogram struct{ Histogram }

type RwMetric interface {
	Metric
	AddFloat(float64)
	SetEpoch(int64)
}

type RwSimple struct{ Simple }

type Simple struct {
	// contains filtered or unexported fields
}

type Writer struct {
	PDesc  *prom.Desc
	Metric dto.Metric
}