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50 lines
1.1 KiB
50 lines
1.1 KiB
package metric
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import (
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"github.com/prometheus/client_golang/prometheus"
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)
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// HistogramVecOpts is histogram vector opts.
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type HistogramVecOpts struct {
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Namespace string
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Subsystem string
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Name string
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Help string
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Labels []string
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Buckets []float64
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}
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// HistogramVec gauge vec.
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type HistogramVec interface {
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// Observe adds a single observation to the histogram.
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Observe(v int64, labels ...string)
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}
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// Histogram prom histogram collection.
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type promHistogramVec struct {
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histogram *prometheus.HistogramVec
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}
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// NewHistogramVec new a histogram vec.
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func NewHistogramVec(cfg *HistogramVecOpts) HistogramVec {
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if cfg == nil {
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return nil
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}
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vec := prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
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Namespace: cfg.Namespace,
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Subsystem: cfg.Subsystem,
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Name: cfg.Name,
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Help: cfg.Help,
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Buckets: cfg.Buckets,
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}, cfg.Labels)
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prometheus.MustRegister(vec)
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return &promHistogramVec{
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histogram: vec,
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}
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}
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// Timing adds a single observation to the histogram.
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func (histogram *promHistogramVec) Observe(v int64, labels ...string) {
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histogram.histogram.WithLabelValues(labels...).Observe(float64(v))
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}
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