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93 lines
2.0 KiB
93 lines
2.0 KiB
package prometheus
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import (
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"time"
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metrics "github.com/prometheus/client_golang/prometheus"
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"gitoa.ru/go-4devs/cache/mw"
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)
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const (
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labelSet = "label"
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labelOperation = "operation"
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)
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//nolint: gochecknoglobals
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var (
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hitCount = metrics.NewCounterVec(
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metrics.CounterOpts{
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Name: "cache_hit_total",
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Help: "Counter of hits cache.",
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},
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[]string{labelSet},
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)
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missCount = metrics.NewCounterVec(
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metrics.CounterOpts{
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Name: "cache_miss_total",
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Help: "Counter of misses cache.",
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},
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[]string{labelSet},
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)
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expiredCount = metrics.NewCounterVec(
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metrics.CounterOpts{
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Name: "cache_expired_total",
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Help: "Counter of expired items in cache.",
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},
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[]string{labelSet},
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)
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errorsCount = metrics.NewCounterVec(
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metrics.CounterOpts{
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Name: "cache_errors_total",
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Help: "Counter of errors in cache.",
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},
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[]string{labelSet, labelOperation},
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)
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responseTime = metrics.NewHistogramVec(
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metrics.HistogramOpts{
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Name: "cache_request_duration_seconds",
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Help: "Histogram of RT for the request cache (seconds).",
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},
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[]string{labelSet, labelOperation},
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)
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)
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//nolint: gochecknoinits
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func init() {
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metrics.MustRegister(
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hitCount,
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missCount,
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expiredCount,
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errorsCount,
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responseTime,
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)
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}
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var _ mw.Metrics = Metrics{}
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// Metrics prometeus.
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type Metrics struct{}
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// Miss inc miss error cache.
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func (m Metrics) Miss(label string) {
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missCount.WithLabelValues(label).Inc()
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}
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// Hit increment hit cache.
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func (m Metrics) Hit(label string) {
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hitCount.WithLabelValues(label).Inc()
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}
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// Expired increment error expired.
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func (m Metrics) Expired(label string) {
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expiredCount.WithLabelValues(label).Inc()
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}
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// Err increment base undefined error.
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func (m Metrics) Err(label string, operation string) {
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errorsCount.WithLabelValues(label, operation).Inc()
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}
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// Observe time from start.
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func (m Metrics) Observe(label string, operation string, start time.Time) {
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responseTime.WithLabelValues(label, operation).Observe(float64(time.Since(start)) / float64(time.Second))
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}
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