mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.4 KiB
73 lines
2.4 KiB
// Copyright 2023 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package discover
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/ethereum/go-ethereum/metrics"
|
|
)
|
|
|
|
const (
|
|
moduleName = "discover"
|
|
// ingressMeterName is the prefix of the per-packet inbound metrics.
|
|
ingressMeterName = moduleName + "/ingress"
|
|
|
|
// egressMeterName is the prefix of the per-packet outbound metrics.
|
|
egressMeterName = moduleName + "/egress"
|
|
)
|
|
|
|
var (
|
|
bucketsCounter []metrics.Counter
|
|
ingressTrafficMeter = metrics.NewRegisteredMeter(ingressMeterName, nil)
|
|
egressTrafficMeter = metrics.NewRegisteredMeter(egressMeterName, nil)
|
|
)
|
|
|
|
func init() {
|
|
for i := 0; i < nBuckets; i++ {
|
|
bucketsCounter = append(bucketsCounter, metrics.NewRegisteredCounter(fmt.Sprintf("%s/bucket/%d/count", moduleName, i), nil))
|
|
}
|
|
}
|
|
|
|
// meteredConn is a wrapper around a net.UDPConn that meters both the
|
|
// inbound and outbound network traffic.
|
|
type meteredUdpConn struct {
|
|
UDPConn
|
|
}
|
|
|
|
func newMeteredConn(conn UDPConn) UDPConn {
|
|
// Short circuit if metrics are disabled
|
|
if !metrics.Enabled {
|
|
return conn
|
|
}
|
|
return &meteredUdpConn{UDPConn: conn}
|
|
}
|
|
|
|
// ReadFromUDP delegates a network read to the underlying connection, bumping the udp ingress traffic meter along the way.
|
|
func (c *meteredUdpConn) ReadFromUDP(b []byte) (n int, addr *net.UDPAddr, err error) {
|
|
n, addr, err = c.UDPConn.ReadFromUDP(b)
|
|
ingressTrafficMeter.Mark(int64(n))
|
|
return n, addr, err
|
|
}
|
|
|
|
// Write delegates a network write to the underlying connection, bumping the udp egress traffic meter along the way.
|
|
func (c *meteredUdpConn) WriteToUDP(b []byte, addr *net.UDPAddr) (n int, err error) {
|
|
n, err = c.UDPConn.WriteToUDP(b, addr)
|
|
egressTrafficMeter.Mark(int64(n))
|
|
return n, err
|
|
}
|
|
|