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64package metrics
import "github.com/prometheus/client_golang/prometheus"
// Gauge creates a gauge metric
func Gauge(name, help string) GaugeMetric {
vec := prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: mustValidMetricName(name),
Help: help,
}, []string{})
prometheus.MustRegister(vec)
return GaugeMetric{vec: vec}
}
// GaugeWith creates a gauge metric with typed labels
func GaugeWith[T any](name, help string) GaugeMetricLabeled[T] {
vec := prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: mustValidMetricName(name),
Help: help,
}, getLabelKeys[T]())
prometheus.MustRegister(vec)
return GaugeMetricLabeled[T]{vec: vec}
}
type GaugeMetric struct {
vec *prometheus.GaugeVec
}
func (g *GaugeMetric) Set(value float64) {
g.vec.With(prometheus.Labels{}).Set(value)
}
func (g *GaugeMetric) Add(value float64) {
g.vec.With(prometheus.Labels{}).Add(value)
}
func (g *GaugeMetric) Inc() {
g.vec.With(prometheus.Labels{}).Add(1.0)
}
func (g *GaugeMetric) Dec() {
g.vec.With(prometheus.Labels{}).Add(-1.0)
}
type GaugeMetricLabeled[T any] struct {
vec *prometheus.GaugeVec
}
func (g *GaugeMetricLabeled[T]) Set(value float64, labels T) {
g.vec.With(getLabelValues(labels)).Set(value)
}
func (g *GaugeMetricLabeled[T]) Add(value float64, labels T) {
g.vec.With(getLabelValues(labels)).Add(value)
}
func (g *GaugeMetricLabeled[T]) Inc(labels T) {
g.vec.With(getLabelValues(labels)).Add(1.0)
}
func (g *GaugeMetricLabeled[T]) Dec(labels T) {
g.vec.With(getLabelValues(labels)).Add(-1.0)
}