neo-go/pkg/rpc/server/prometheus.go

package server

import (
	"fmt"

	"github.com/prometheus/client_golang/prometheus"
)

// Metrics used in monitoring service.
var rpcCounter = map[string]prometheus.Counter{}

func incCounter(name string) {
	ctr, ok := rpcCounter[name]
	if ok {
		ctr.Inc()
	}
}

func regCounter(call string) {
	ctr := prometheus.NewCounter(
		prometheus.CounterOpts{
			Help:      fmt.Sprintf("Number of calls to %s rpc endpoint", call),
			Name:      fmt.Sprintf("%s_called", call),
			Namespace: "neogo",
		},
	)
	prometheus.MustRegister(ctr)
	rpcCounter[call] = ctr
}

func init() {
	for call := range rpcHandlers {
		regCounter(call)
	}
	for call := range rpcWsHandlers {
		regCounter(call)
	}
}