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(), } }