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package p2p
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"
)
const MetricsSubsystem = "p2p"
// Metrics contains metrics exposed by this package.
type Metrics struct {
// Number of peers.
Peers metrics.Gauge
// Number of bytes received from a given peer.
PeerReceiveBytesTotal metrics.Counter
// Number of bytes sent to a given peer.
PeerSendBytesTotal metrics.Counter
// Pending bytes to be sent to a given peer.
PeerPendingSendBytes metrics.Gauge
// Number of transactions submitted by each peer.
NumTxs metrics.Gauge
}
// PrometheusMetrics returns Metrics build using Prometheus client library.
func PrometheusMetrics(namespace string) *Metrics {
return &Metrics{
Peers: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "peers",
Help: "Number of peers.",
}, []string{}),
PeerReceiveBytesTotal: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "peer_receive_bytes_total",
Help: "Number of bytes received from a given peer.",
}, []string{"peer_id"}),
PeerSendBytesTotal: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "peer_send_bytes_total",
Help: "Number of bytes sent to a given peer.",
}, []string{"peer_id"}),
PeerPendingSendBytes: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "peer_pending_send_bytes",
Help: "Number of pending bytes to be sent to a given peer.",
}, []string{"peer_id"}),
NumTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "num_txs",
Help: "Number of transactions submitted by each peer.",
}, []string{"peer_id"}),
}
}
// NopMetrics returns no-op Metrics.
func NopMetrics() *Metrics {
return &Metrics{
Peers: discard.NewGauge(),
PeerReceiveBytesTotal: discard.NewCounter(),
PeerSendBytesTotal: discard.NewCounter(),
PeerPendingSendBytes: discard.NewGauge(),
NumTxs: discard.NewGauge(),
}
}