github.com/theQRL/go-zond@v0.1.1/rpc/metrics.go (about) 1 // Copyright 2020 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package rpc 18 19 import ( 20 "fmt" 21 "time" 22 23 "github.com/theQRL/go-zond/metrics" 24 ) 25 26 var ( 27 rpcRequestGauge = metrics.NewRegisteredGauge("rpc/requests", nil) 28 successfulRequestGauge = metrics.NewRegisteredGauge("rpc/success", nil) 29 failedRequestGauge = metrics.NewRegisteredGauge("rpc/failure", nil) 30 31 // serveTimeHistName is the prefix of the per-request serving time histograms. 32 serveTimeHistName = "rpc/duration" 33 34 rpcServingTimer = metrics.NewRegisteredTimer("rpc/duration/all", nil) 35 ) 36 37 // updateServeTimeHistogram tracks the serving time of a remote RPC call. 38 func updateServeTimeHistogram(method string, success bool, elapsed time.Duration) { 39 note := "success" 40 if !success { 41 note = "failure" 42 } 43 h := fmt.Sprintf("%s/%s/%s", serveTimeHistName, method, note) 44 sampler := func() metrics.Sample { 45 return metrics.ResettingSample( 46 metrics.NewExpDecaySample(1028, 0.015), 47 ) 48 } 49 metrics.GetOrRegisterHistogramLazy(h, nil, sampler).Update(elapsed.Microseconds()) 50 }