65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package middlewares
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import (
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"github.com/containous/traefik/types"
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"github.com/go-kit/kit/metrics"
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"github.com/go-kit/kit/metrics/prometheus"
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stdprometheus "github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"net/http"
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)
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const (
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reqsName = "traefik_requests_total"
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latencyName = "traefik_request_duration_seconds"
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)
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// Prometheus is an Implementation for Metrics that exposes prometheus metrics for the latency
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// and the number of requests partitioned by status code and method.
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type Prometheus struct {
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reqsCounter metrics.Counter
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latencyHistogram metrics.Histogram
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}
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func (p *Prometheus) getReqsCounter() metrics.Counter {
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return p.reqsCounter
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}
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func (p *Prometheus) getLatencyHistogram() metrics.Histogram {
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return p.latencyHistogram
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}
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// NewPrometheus returns a new prometheus Metrics implementation.
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func NewPrometheus(name string, config *types.Prometheus) *Prometheus {
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var m Prometheus
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m.reqsCounter = prometheus.NewCounterFrom(
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stdprometheus.CounterOpts{
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Name: reqsName,
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Help: "How many HTTP requests processed, partitioned by status code and method.",
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ConstLabels: stdprometheus.Labels{"service": name},
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},
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[]string{"code", "method"},
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)
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var buckets []float64
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if config.Buckets != nil {
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buckets = config.Buckets
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} else {
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buckets = []float64{0.1, 0.3, 1.2, 5}
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}
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m.latencyHistogram = prometheus.NewHistogramFrom(
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stdprometheus.HistogramOpts{
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Name: latencyName,
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Help: "How long it took to process the request.",
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ConstLabels: stdprometheus.Labels{"service": name},
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Buckets: buckets,
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},
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[]string{},
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)
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return &m
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}
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func (p *Prometheus) handler() http.Handler {
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return promhttp.Handler()
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}
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