/
metrics.go
45 lines (38 loc) · 911 Bytes
/
metrics.go
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package mapper
import (
"github.com/go-kit/kit/metrics"
"github.com/go-kit/kit/metrics/discard"
"github.com/go-kit/kit/metrics/prometheus"
stdprometheus "github.com/prometheus/client_golang/prometheus"
"github.com/tendermint/tendermint/config"
)
const (
MetricsSubsystem = "params"
ParamLabel = "key"
)
type Metrics struct {
Param metrics.Gauge
}
func NopMetrics() *Metrics {
return &Metrics{
Param: discard.NewGauge(),
}
}
func PrometheusMetrics(cfg *config.InstrumentationConfig) *Metrics {
if !cfg.Prometheus {
return NopMetrics()
}
paramVec := stdprometheus.NewGaugeVec(stdprometheus.GaugeOpts{
Namespace: cfg.Namespace,
Subsystem: MetricsSubsystem,
Name: "parameter",
Help: "parameter changes",
}, []string{ParamLabel})
err := stdprometheus.Register(paramVec)
if err != nil {
panic(err)
}
return &Metrics{
Param: prometheus.NewGauge(paramVec),
}
}