137 lines
4.8 KiB
Go
137 lines
4.8 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Contains the meters and timers used by the networking layer.
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package p2p
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import (
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"errors"
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"net"
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"github.com/ethereum/go-ethereum/metrics"
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)
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const (
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// HandleHistName is the prefix of the per-packet serving time histograms.
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HandleHistName = "p2p/handle"
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// ingressMeterName is the prefix of the per-packet inbound metrics.
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ingressMeterName = "p2p/ingress"
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// egressMeterName is the prefix of the per-packet outbound metrics.
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egressMeterName = "p2p/egress"
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)
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var (
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activePeerGauge metrics.Gauge = metrics.NilGauge{}
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activeInboundPeerGauge metrics.Gauge = metrics.NilGauge{}
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activeOutboundPeerGauge metrics.Gauge = metrics.NilGauge{}
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ingressTrafficMeter = metrics.NewRegisteredMeter("p2p/ingress", nil)
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egressTrafficMeter = metrics.NewRegisteredMeter("p2p/egress", nil)
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// general ingress/egress connection meters
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serveMeter metrics.Meter = metrics.NilMeter{}
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serveSuccessMeter metrics.Meter = metrics.NilMeter{}
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dialMeter metrics.Meter = metrics.NilMeter{}
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dialSuccessMeter metrics.Meter = metrics.NilMeter{}
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dialConnectionError metrics.Meter = metrics.NilMeter{}
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// handshake error meters
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dialTooManyPeers = metrics.NewRegisteredMeter("p2p/dials/error/saturated", nil)
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dialAlreadyConnected = metrics.NewRegisteredMeter("p2p/dials/error/known", nil)
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dialSelf = metrics.NewRegisteredMeter("p2p/dials/error/self", nil)
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dialUselessPeer = metrics.NewRegisteredMeter("p2p/dials/error/useless", nil)
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dialUnexpectedIdentity = metrics.NewRegisteredMeter("p2p/dials/error/id/unexpected", nil)
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dialEncHandshakeError = metrics.NewRegisteredMeter("p2p/dials/error/rlpx/enc", nil)
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dialProtoHandshakeError = metrics.NewRegisteredMeter("p2p/dials/error/rlpx/proto", nil)
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)
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func init() {
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if !metrics.Enabled {
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return
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}
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activePeerGauge = metrics.NewRegisteredGauge("p2p/peers", nil)
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activeInboundPeerGauge = metrics.NewRegisteredGauge("p2p/peers/inbound", nil)
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activeOutboundPeerGauge = metrics.NewRegisteredGauge("p2p/peers/outbound", nil)
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serveMeter = metrics.NewRegisteredMeter("p2p/serves", nil)
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serveSuccessMeter = metrics.NewRegisteredMeter("p2p/serves/success", nil)
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dialMeter = metrics.NewRegisteredMeter("p2p/dials", nil)
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dialSuccessMeter = metrics.NewRegisteredMeter("p2p/dials/success", nil)
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dialConnectionError = metrics.NewRegisteredMeter("p2p/dials/error/connection", nil)
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}
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// markDialError matches errors that occur while setting up a dial connection
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// to the corresponding meter.
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func markDialError(err error) {
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if !metrics.Enabled {
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return
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}
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if err2 := errors.Unwrap(err); err2 != nil {
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err = err2
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}
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switch err {
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case DiscTooManyPeers:
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dialTooManyPeers.Mark(1)
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case DiscAlreadyConnected:
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dialAlreadyConnected.Mark(1)
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case DiscSelf:
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dialSelf.Mark(1)
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case DiscUselessPeer:
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dialUselessPeer.Mark(1)
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case DiscUnexpectedIdentity:
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dialUnexpectedIdentity.Mark(1)
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case errEncHandshakeError:
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dialEncHandshakeError.Mark(1)
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case errProtoHandshakeError:
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dialProtoHandshakeError.Mark(1)
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}
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}
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// meteredConn is a wrapper around a net.Conn that meters both the
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// inbound and outbound network traffic.
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type meteredConn struct {
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net.Conn
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}
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// newMeteredConn creates a new metered connection, bumps the ingress or egress
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// connection meter and also increases the metered peer count. If the metrics
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// system is disabled, function returns the original connection.
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func newMeteredConn(conn net.Conn) net.Conn {
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if !metrics.Enabled {
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return conn
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}
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return &meteredConn{Conn: conn}
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}
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// Read delegates a network read to the underlying connection, bumping the common
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// and the peer ingress traffic meters along the way.
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func (c *meteredConn) Read(b []byte) (n int, err error) {
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n, err = c.Conn.Read(b)
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ingressTrafficMeter.Mark(int64(n))
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return n, err
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}
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// Write delegates a network write to the underlying connection, bumping the common
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// and the peer egress traffic meters along the way.
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func (c *meteredConn) Write(b []byte) (n int, err error) {
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n, err = c.Conn.Write(b)
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egressTrafficMeter.Mark(int64(n))
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return n, err
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}
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