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package mempool
import (
"github.com/go-kit/kit/metrics"
"github.com/go-kit/kit/metrics/discard"
prometheus "github.com/go-kit/kit/metrics/prometheus"
stdprometheus "github.com/prometheus/client_golang/prometheus"
)
// Metrics contains metrics exposed by this package.
// see MetricsProvider for descriptions.
type Metrics struct {
// Size of the mempool.
Size metrics.Gauge
}
// PrometheusMetrics returns Metrics build using Prometheus client library.
func PrometheusMetrics(namespace string) *Metrics {
return &Metrics{
Size: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: "mempool",
Name: "size",
Help: "Size of the mempool (number of uncommitted transactions).",
}, []string{}),
}
}
// NopMetrics returns no-op Metrics.
func NopMetrics() *Metrics {
return &Metrics{
Size: discard.NewGauge(),
}
}