mirror of https://github.com/status-im/op-geth.git
384 lines
10 KiB
Go
384 lines
10 KiB
Go
// Copyright 2016 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 les implements the Light Ethereum Subprotocol.
|
|
package les
|
|
|
|
import (
|
|
"crypto/ecdsa"
|
|
"encoding/binary"
|
|
"math"
|
|
"sync"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/core/rawdb"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/eth"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/les/flowcontrol"
|
|
"github.com/ethereum/go-ethereum/light"
|
|
"github.com/ethereum/go-ethereum/log"
|
|
"github.com/ethereum/go-ethereum/p2p"
|
|
"github.com/ethereum/go-ethereum/p2p/discv5"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
type LesServer struct {
|
|
config *eth.Config
|
|
protocolManager *ProtocolManager
|
|
fcManager *flowcontrol.ClientManager // nil if our node is client only
|
|
fcCostStats *requestCostStats
|
|
defParams *flowcontrol.ServerParams
|
|
lesTopics []discv5.Topic
|
|
privateKey *ecdsa.PrivateKey
|
|
quitSync chan struct{}
|
|
|
|
chtIndexer, bloomTrieIndexer *core.ChainIndexer
|
|
}
|
|
|
|
func NewLesServer(eth *eth.Ethereum, config *eth.Config) (*LesServer, error) {
|
|
quitSync := make(chan struct{})
|
|
pm, err := NewProtocolManager(eth.BlockChain().Config(), false, ServerProtocolVersions, config.NetworkId, eth.EventMux(), eth.Engine(), newPeerSet(), eth.BlockChain(), eth.TxPool(), eth.ChainDb(), nil, nil, quitSync, new(sync.WaitGroup))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
lesTopics := make([]discv5.Topic, len(AdvertiseProtocolVersions))
|
|
for i, pv := range AdvertiseProtocolVersions {
|
|
lesTopics[i] = lesTopic(eth.BlockChain().Genesis().Hash(), pv)
|
|
}
|
|
|
|
srv := &LesServer{
|
|
config: config,
|
|
protocolManager: pm,
|
|
quitSync: quitSync,
|
|
lesTopics: lesTopics,
|
|
chtIndexer: light.NewChtIndexer(eth.ChainDb(), false),
|
|
bloomTrieIndexer: light.NewBloomTrieIndexer(eth.ChainDb(), false),
|
|
}
|
|
logger := log.New()
|
|
|
|
chtV1SectionCount, _, _ := srv.chtIndexer.Sections() // indexer still uses LES/1 4k section size for backwards server compatibility
|
|
chtV2SectionCount := chtV1SectionCount / (light.CHTFrequencyClient / light.CHTFrequencyServer)
|
|
if chtV2SectionCount != 0 {
|
|
// convert to LES/2 section
|
|
chtLastSection := chtV2SectionCount - 1
|
|
// convert last LES/2 section index back to LES/1 index for chtIndexer.SectionHead
|
|
chtLastSectionV1 := (chtLastSection+1)*(light.CHTFrequencyClient/light.CHTFrequencyServer) - 1
|
|
chtSectionHead := srv.chtIndexer.SectionHead(chtLastSectionV1)
|
|
chtRoot := light.GetChtV2Root(pm.chainDb, chtLastSection, chtSectionHead)
|
|
logger.Info("Loaded CHT", "section", chtLastSection, "head", chtSectionHead, "root", chtRoot)
|
|
}
|
|
bloomTrieSectionCount, _, _ := srv.bloomTrieIndexer.Sections()
|
|
if bloomTrieSectionCount != 0 {
|
|
bloomTrieLastSection := bloomTrieSectionCount - 1
|
|
bloomTrieSectionHead := srv.bloomTrieIndexer.SectionHead(bloomTrieLastSection)
|
|
bloomTrieRoot := light.GetBloomTrieRoot(pm.chainDb, bloomTrieLastSection, bloomTrieSectionHead)
|
|
logger.Info("Loaded bloom trie", "section", bloomTrieLastSection, "head", bloomTrieSectionHead, "root", bloomTrieRoot)
|
|
}
|
|
|
|
srv.chtIndexer.Start(eth.BlockChain())
|
|
pm.server = srv
|
|
|
|
srv.defParams = &flowcontrol.ServerParams{
|
|
BufLimit: 300000000,
|
|
MinRecharge: 50000,
|
|
}
|
|
srv.fcManager = flowcontrol.NewClientManager(uint64(config.LightServ), 10, 1000000000)
|
|
srv.fcCostStats = newCostStats(eth.ChainDb())
|
|
return srv, nil
|
|
}
|
|
|
|
func (s *LesServer) Protocols() []p2p.Protocol {
|
|
return s.protocolManager.SubProtocols
|
|
}
|
|
|
|
// Start starts the LES server
|
|
func (s *LesServer) Start(srvr *p2p.Server) {
|
|
s.protocolManager.Start(s.config.LightPeers)
|
|
if srvr.DiscV5 != nil {
|
|
for _, topic := range s.lesTopics {
|
|
topic := topic
|
|
go func() {
|
|
logger := log.New("topic", topic)
|
|
logger.Info("Starting topic registration")
|
|
defer logger.Info("Terminated topic registration")
|
|
|
|
srvr.DiscV5.RegisterTopic(topic, s.quitSync)
|
|
}()
|
|
}
|
|
}
|
|
s.privateKey = srvr.PrivateKey
|
|
s.protocolManager.blockLoop()
|
|
}
|
|
|
|
func (s *LesServer) SetBloomBitsIndexer(bloomIndexer *core.ChainIndexer) {
|
|
bloomIndexer.AddChildIndexer(s.bloomTrieIndexer)
|
|
}
|
|
|
|
// Stop stops the LES service
|
|
func (s *LesServer) Stop() {
|
|
s.chtIndexer.Close()
|
|
// bloom trie indexer is closed by parent bloombits indexer
|
|
s.fcCostStats.store()
|
|
s.fcManager.Stop()
|
|
go func() {
|
|
<-s.protocolManager.noMorePeers
|
|
}()
|
|
s.protocolManager.Stop()
|
|
}
|
|
|
|
type requestCosts struct {
|
|
baseCost, reqCost uint64
|
|
}
|
|
|
|
type requestCostTable map[uint64]*requestCosts
|
|
|
|
type RequestCostList []struct {
|
|
MsgCode, BaseCost, ReqCost uint64
|
|
}
|
|
|
|
func (list RequestCostList) decode() requestCostTable {
|
|
table := make(requestCostTable)
|
|
for _, e := range list {
|
|
table[e.MsgCode] = &requestCosts{
|
|
baseCost: e.BaseCost,
|
|
reqCost: e.ReqCost,
|
|
}
|
|
}
|
|
return table
|
|
}
|
|
|
|
type linReg struct {
|
|
sumX, sumY, sumXX, sumXY float64
|
|
cnt uint64
|
|
}
|
|
|
|
const linRegMaxCnt = 100000
|
|
|
|
func (l *linReg) add(x, y float64) {
|
|
if l.cnt >= linRegMaxCnt {
|
|
sub := float64(l.cnt+1-linRegMaxCnt) / linRegMaxCnt
|
|
l.sumX -= l.sumX * sub
|
|
l.sumY -= l.sumY * sub
|
|
l.sumXX -= l.sumXX * sub
|
|
l.sumXY -= l.sumXY * sub
|
|
l.cnt = linRegMaxCnt - 1
|
|
}
|
|
l.cnt++
|
|
l.sumX += x
|
|
l.sumY += y
|
|
l.sumXX += x * x
|
|
l.sumXY += x * y
|
|
}
|
|
|
|
func (l *linReg) calc() (b, m float64) {
|
|
if l.cnt == 0 {
|
|
return 0, 0
|
|
}
|
|
cnt := float64(l.cnt)
|
|
d := cnt*l.sumXX - l.sumX*l.sumX
|
|
if d < 0.001 {
|
|
return l.sumY / cnt, 0
|
|
}
|
|
m = (cnt*l.sumXY - l.sumX*l.sumY) / d
|
|
b = (l.sumY / cnt) - (m * l.sumX / cnt)
|
|
return b, m
|
|
}
|
|
|
|
func (l *linReg) toBytes() []byte {
|
|
var arr [40]byte
|
|
binary.BigEndian.PutUint64(arr[0:8], math.Float64bits(l.sumX))
|
|
binary.BigEndian.PutUint64(arr[8:16], math.Float64bits(l.sumY))
|
|
binary.BigEndian.PutUint64(arr[16:24], math.Float64bits(l.sumXX))
|
|
binary.BigEndian.PutUint64(arr[24:32], math.Float64bits(l.sumXY))
|
|
binary.BigEndian.PutUint64(arr[32:40], l.cnt)
|
|
return arr[:]
|
|
}
|
|
|
|
func linRegFromBytes(data []byte) *linReg {
|
|
if len(data) != 40 {
|
|
return nil
|
|
}
|
|
l := &linReg{}
|
|
l.sumX = math.Float64frombits(binary.BigEndian.Uint64(data[0:8]))
|
|
l.sumY = math.Float64frombits(binary.BigEndian.Uint64(data[8:16]))
|
|
l.sumXX = math.Float64frombits(binary.BigEndian.Uint64(data[16:24]))
|
|
l.sumXY = math.Float64frombits(binary.BigEndian.Uint64(data[24:32]))
|
|
l.cnt = binary.BigEndian.Uint64(data[32:40])
|
|
return l
|
|
}
|
|
|
|
type requestCostStats struct {
|
|
lock sync.RWMutex
|
|
db ethdb.Database
|
|
stats map[uint64]*linReg
|
|
}
|
|
|
|
type requestCostStatsRlp []struct {
|
|
MsgCode uint64
|
|
Data []byte
|
|
}
|
|
|
|
var rcStatsKey = []byte("_requestCostStats")
|
|
|
|
func newCostStats(db ethdb.Database) *requestCostStats {
|
|
stats := make(map[uint64]*linReg)
|
|
for _, code := range reqList {
|
|
stats[code] = &linReg{cnt: 100}
|
|
}
|
|
|
|
if db != nil {
|
|
data, err := db.Get(rcStatsKey)
|
|
var statsRlp requestCostStatsRlp
|
|
if err == nil {
|
|
err = rlp.DecodeBytes(data, &statsRlp)
|
|
}
|
|
if err == nil {
|
|
for _, r := range statsRlp {
|
|
if stats[r.MsgCode] != nil {
|
|
if l := linRegFromBytes(r.Data); l != nil {
|
|
stats[r.MsgCode] = l
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return &requestCostStats{
|
|
db: db,
|
|
stats: stats,
|
|
}
|
|
}
|
|
|
|
func (s *requestCostStats) store() {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
statsRlp := make(requestCostStatsRlp, len(reqList))
|
|
for i, code := range reqList {
|
|
statsRlp[i].MsgCode = code
|
|
statsRlp[i].Data = s.stats[code].toBytes()
|
|
}
|
|
|
|
if data, err := rlp.EncodeToBytes(statsRlp); err == nil {
|
|
s.db.Put(rcStatsKey, data)
|
|
}
|
|
}
|
|
|
|
func (s *requestCostStats) getCurrentList() RequestCostList {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
list := make(RequestCostList, len(reqList))
|
|
//fmt.Println("RequestCostList")
|
|
for idx, code := range reqList {
|
|
b, m := s.stats[code].calc()
|
|
//fmt.Println(code, s.stats[code].cnt, b/1000000, m/1000000)
|
|
if m < 0 {
|
|
b += m
|
|
m = 0
|
|
}
|
|
if b < 0 {
|
|
b = 0
|
|
}
|
|
|
|
list[idx].MsgCode = code
|
|
list[idx].BaseCost = uint64(b * 2)
|
|
list[idx].ReqCost = uint64(m * 2)
|
|
}
|
|
return list
|
|
}
|
|
|
|
func (s *requestCostStats) update(msgCode, reqCnt, cost uint64) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
|
|
c, ok := s.stats[msgCode]
|
|
if !ok || reqCnt == 0 {
|
|
return
|
|
}
|
|
c.add(float64(reqCnt), float64(cost))
|
|
}
|
|
|
|
func (pm *ProtocolManager) blockLoop() {
|
|
pm.wg.Add(1)
|
|
headCh := make(chan core.ChainHeadEvent, 10)
|
|
headSub := pm.blockchain.SubscribeChainHeadEvent(headCh)
|
|
go func() {
|
|
var lastHead *types.Header
|
|
lastBroadcastTd := common.Big0
|
|
for {
|
|
select {
|
|
case ev := <-headCh:
|
|
peers := pm.peers.AllPeers()
|
|
if len(peers) > 0 {
|
|
header := ev.Block.Header()
|
|
hash := header.Hash()
|
|
number := header.Number.Uint64()
|
|
td := rawdb.ReadTd(pm.chainDb, hash, number)
|
|
if td != nil && td.Cmp(lastBroadcastTd) > 0 {
|
|
var reorg uint64
|
|
if lastHead != nil {
|
|
reorg = lastHead.Number.Uint64() - rawdb.FindCommonAncestor(pm.chainDb, header, lastHead).Number.Uint64()
|
|
}
|
|
lastHead = header
|
|
lastBroadcastTd = td
|
|
|
|
log.Debug("Announcing block to peers", "number", number, "hash", hash, "td", td, "reorg", reorg)
|
|
|
|
announce := announceData{Hash: hash, Number: number, Td: td, ReorgDepth: reorg}
|
|
var (
|
|
signed bool
|
|
signedAnnounce announceData
|
|
)
|
|
|
|
for _, p := range peers {
|
|
switch p.announceType {
|
|
|
|
case announceTypeSimple:
|
|
select {
|
|
case p.announceChn <- announce:
|
|
default:
|
|
pm.removePeer(p.id)
|
|
}
|
|
|
|
case announceTypeSigned:
|
|
if !signed {
|
|
signedAnnounce = announce
|
|
signedAnnounce.sign(pm.server.privateKey)
|
|
signed = true
|
|
}
|
|
|
|
select {
|
|
case p.announceChn <- signedAnnounce:
|
|
default:
|
|
pm.removePeer(p.id)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
case <-pm.quitSync:
|
|
headSub.Unsubscribe()
|
|
pm.wg.Done()
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|