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kratos/contrib/metrics/prometheus/histogram.go

31 lines
611 B

package prometheus
import (
"github.com/go-kratos/kratos/v2/metrics"
"github.com/prometheus/client_golang/prometheus"
)
var _ metrics.Observer = (*histogram)(nil)
type histogram struct {
hv *prometheus.HistogramVec
lvs []string
}
// NewHistogram new a prometheus histogram and returns Histogram.
func NewHistogram(hv *prometheus.HistogramVec) metrics.Observer {
return &histogram{
hv: hv,
}
}
func (h *histogram) With(lvs ...string) metrics.Observer {
return &histogram{
hv: h.hv,
lvs: lvs,
}
}
func (h *histogram) Observe(value float64) {
h.hv.WithLabelValues(h.lvs...).Observe(value)
}