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47 lines
1.6 KiB
47 lines
1.6 KiB
package proxy
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import (
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"github.com/go-kit/kit/metrics"
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"github.com/go-kit/kit/metrics/discard"
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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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)
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const (
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// MetricsSubsystem is a subsystem shared by all metrics exposed by this
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// package.
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MetricsSubsystem = "abci_connection"
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)
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// Metrics contains the prometheus metrics exposed by the proxy package.
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type Metrics struct {
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MethodTiming metrics.Histogram
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}
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// PrometheusMetrics constructs a Metrics instance that collects metrics samples.
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// The resulting metrics will be prefixed with namespace and labeled with the
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// defaultLabelsAndValues. defaultLabelsAndValues must be a list of string pairs
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// where the first of each pair is the label and the second is the value.
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func PrometheusMetrics(namespace string, defaultLabelsAndValues ...string) *Metrics {
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defaultLabels := []string{}
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for i := 0; i < len(defaultLabelsAndValues); i += 2 {
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defaultLabels = append(defaultLabels, defaultLabelsAndValues[i])
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}
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return &Metrics{
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MethodTiming: prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "method_timing",
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Help: "ABCI Method Timing",
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Buckets: []float64{.0001, .0004, .002, .009, .02, .1, .65, 2, 6, 25},
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}, append(defaultLabels, []string{"method", "type"}...)).With(defaultLabelsAndValues...),
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}
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}
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// NopMetrics constructs a Metrics instance that discards all samples and is suitable
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// for testing.
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func NopMetrics() *Metrics {
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return &Metrics{
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MethodTiming: discard.NewHistogram(),
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}
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}
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