12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 |
- // Copyright 2015 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/>.
- // Contains the meters and timers used by the networking layer.
- package p2p
- import (
- "net"
- "github.com/ethereum/go-ethereum/metrics"
- )
- const (
- // ingressMeterName is the prefix of the per-packet inbound metrics.
- ingressMeterName = "p2p/ingress"
- // egressMeterName is the prefix of the per-packet outbound metrics.
- egressMeterName = "p2p/egress"
- // HandleHistName is the prefix of the per-packet serving time histograms.
- HandleHistName = "p2p/handle"
- )
- var (
- ingressConnectMeter = metrics.NewRegisteredMeter("p2p/serves", nil)
- ingressTrafficMeter = metrics.NewRegisteredMeter(ingressMeterName, nil)
- egressConnectMeter = metrics.NewRegisteredMeter("p2p/dials", nil)
- egressTrafficMeter = metrics.NewRegisteredMeter(egressMeterName, nil)
- activePeerGauge = metrics.NewRegisteredGauge("p2p/peers", nil)
- )
- // meteredConn is a wrapper around a net.Conn that meters both the
- // inbound and outbound network traffic.
- type meteredConn struct {
- net.Conn
- }
- // newMeteredConn creates a new metered connection, bumps the ingress or egress
- // connection meter and also increases the metered peer count. If the metrics
- // system is disabled, function returns the original connection.
- func newMeteredConn(conn net.Conn, ingress bool, addr *net.TCPAddr) net.Conn {
- // Short circuit if metrics are disabled
- if !metrics.Enabled {
- return conn
- }
- // Bump the connection counters and wrap the connection
- if ingress {
- ingressConnectMeter.Mark(1)
- } else {
- egressConnectMeter.Mark(1)
- }
- activePeerGauge.Inc(1)
- return &meteredConn{Conn: conn}
- }
- // Read delegates a network read to the underlying connection, bumping the common
- // and the peer ingress traffic meters along the way.
- func (c *meteredConn) Read(b []byte) (n int, err error) {
- n, err = c.Conn.Read(b)
- ingressTrafficMeter.Mark(int64(n))
- return n, err
- }
- // Write delegates a network write to the underlying connection, bumping the common
- // and the peer egress traffic meters along the way.
- func (c *meteredConn) Write(b []byte) (n int, err error) {
- n, err = c.Conn.Write(b)
- egressTrafficMeter.Mark(int64(n))
- return n, err
- }
- // Close delegates a close operation to the underlying connection, unregisters
- // the peer from the traffic registries and emits close event.
- func (c *meteredConn) Close() error {
- err := c.Conn.Close()
- if err == nil {
- activePeerGauge.Dec(1)
- }
- return err
- }
|