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p2pserver.go
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/
p2pserver.go
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/*
* Copyright (C) 2018 The ontology Authors
* This file is part of The ontology library.
*
* The ontology 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 ontology 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 ontology. If not, see <http://www.gnu.org/licenses/>.
*/
package p2pserver
import (
"strings"
"time"
"github.com/tsfdsong/ontology/account"
"github.com/tsfdsong/ontology/common/config"
"github.com/tsfdsong/ontology/common/log"
"github.com/tsfdsong/ontology/core/ledger"
"github.com/tsfdsong/ontology/p2pserver/common"
"github.com/tsfdsong/ontology/p2pserver/connect_controller"
"github.com/tsfdsong/ontology/p2pserver/net/netserver"
p2p "github.com/tsfdsong/ontology/p2pserver/net/protocol"
"github.com/tsfdsong/ontology/p2pserver/protocols"
"github.com/tsfdsong/ontology/p2pserver/protocols/utils"
)
//P2PServer control all network activities
type P2PServer struct {
network *netserver.NetServer
db *ledger.Ledger
}
//NewServer return a new p2pserver according to the pubkey
func NewServer(acct *account.Account) (*P2PServer, error) {
db := ledger.DefLedger
var rsv []string
var recRsv []string
conf := config.DefConfig.P2PNode
if conf.ReservedPeersOnly && conf.ReservedCfg != nil {
rsv = conf.ReservedCfg.ReservedPeers
}
if conf.ReservedCfg != nil {
recRsv = conf.ReservedCfg.ReservedPeers
}
staticFilter := connect_controller.NewStaticReserveFilter(rsv)
protocol := protocols.NewMsgHandler(acct, connect_controller.NewStaticReserveFilter(recRsv), db, log.Log)
reserved := protocol.GetReservedAddrFilter(len(rsv) != 0)
reservedPeers := p2p.CombineAddrFilter(staticFilter, reserved)
n, err := netserver.NewNetServer(protocol, conf, reservedPeers)
if err != nil {
return nil, err
}
p := &P2PServer{
db: db,
network: n,
}
return p, nil
}
//Start create all services
func (self *P2PServer) Start() error {
return self.network.Start()
}
//Stop halt all service by send signal to channels
func (self *P2PServer) Stop() {
self.network.Stop()
}
// GetNetwork returns the low level netserver
func (self *P2PServer) GetNetwork() p2p.P2P {
return self.network
}
//WaitForPeersStart check whether enough peer linked in loop
func (self *P2PServer) WaitForPeersStart() {
periodTime := config.DEFAULT_GEN_BLOCK_TIME / common.UPDATE_RATE_PER_BLOCK
for {
log.Info("[p2p]Wait for minimum connection...")
if self.reachMinConnection() {
break
}
<-time.After(time.Second * (time.Duration(periodTime)))
}
}
//reachMinConnection return whether net layer have enough link under different config
func (self *P2PServer) reachMinConnection() bool {
if !config.DefConfig.Consensus.EnableConsensus {
//just sync
return true
}
consensusType := strings.ToLower(config.DefConfig.Genesis.ConsensusType)
if consensusType == "" {
consensusType = "dbft"
}
var minCount uint32 = config.DBFT_MIN_NODE_NUM
switch consensusType {
case "dbft":
case "solo":
minCount = config.SOLO_MIN_NODE_NUM
case "vbft":
minCount = self.getVbftGovNodeCount()
}
return self.network.GetConnectionCnt()+1 >= minCount
}
func (self *P2PServer) getVbftGovNodeCount() uint32 {
view, err := utils.GetGovernanceView(self.db)
if err != nil {
return config.VBFT_MIN_NODE_NUM
}
_, count, err := utils.GetPeersConfig(self.db, view.View)
if err != nil {
return config.VBFT_MIN_NODE_NUM
}
return count - count/3
}