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40 lines
712 B
40 lines
712 B
2 years ago
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package prometheus
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import (
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"github.com/go-kratos/kratos/v2/metrics"
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"github.com/prometheus/client_golang/prometheus"
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)
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var _ metrics.Gauge = (*gauge)(nil)
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type gauge struct {
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gv *prometheus.GaugeVec
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lvs []string
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}
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// NewGauge new a prometheus gauge and returns Gauge.
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func NewGauge(gv *prometheus.GaugeVec) metrics.Gauge {
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return &gauge{
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gv: gv,
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}
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}
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func (g *gauge) With(lvs ...string) metrics.Gauge {
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return &gauge{
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gv: g.gv,
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lvs: lvs,
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}
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}
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func (g *gauge) Set(value float64) {
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g.gv.WithLabelValues(g.lvs...).Set(value)
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}
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func (g *gauge) Add(delta float64) {
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g.gv.WithLabelValues(g.lvs...).Add(delta)
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}
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func (g *gauge) Sub(delta float64) {
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g.gv.WithLabelValues(g.lvs...).Sub(delta)
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}
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