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handle.go
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handle.go
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package consensusmgr
import (
"reflect"
"github.com/sirupsen/logrus"
"github.com/bytom/vapor/event"
"github.com/bytom/vapor/netsync/peers"
"github.com/bytom/vapor/p2p"
"github.com/bytom/vapor/p2p/security"
"github.com/bytom/vapor/protocol/bc"
"github.com/bytom/vapor/protocol/bc/types"
)
// Switch is the interface for p2p switch.
type Switch interface {
AddReactor(name string, reactor p2p.Reactor) p2p.Reactor
}
// Chain is the interface for Bytom core.
type Chain interface {
BestBlockHeight() uint64
GetHeaderByHash(*bc.Hash) (*types.BlockHeader, error)
ProcessBlock(*types.Block) (bool, error)
ProcessBlockSignature(signature, pubkey []byte, blockHash *bc.Hash) error
}
type Peers interface {
AddPeer(peer peers.BasePeer)
BroadcastMsg(bm peers.BroadcastMsg) error
GetPeer(id string) *peers.Peer
MarkBlock(peerID string, hash *bc.Hash)
MarkBlockSignature(peerID string, signature []byte)
ProcessIllegal(peerID string, level byte, reason string)
RemovePeer(peerID string)
SetStatus(peerID string, height uint64, hash *bc.Hash)
}
type blockMsg struct {
block *types.Block
peerID string
}
// Manager is the consensus message network synchronization manager.
type Manager struct {
sw Switch
chain Chain
peers Peers
blockFetcher *blockFetcher
eventDispatcher *event.Dispatcher
quit chan struct{}
}
// NewManager create new manager.
func NewManager(sw Switch, chain Chain, peers Peers, dispatcher *event.Dispatcher) *Manager {
manager := &Manager{
sw: sw,
chain: chain,
peers: peers,
blockFetcher: newBlockFetcher(chain, peers),
eventDispatcher: dispatcher,
quit: make(chan struct{}),
}
protocolReactor := NewConsensusReactor(manager)
manager.sw.AddReactor("CONSENSUS", protocolReactor)
return manager
}
func (m *Manager) addPeer(peer peers.BasePeer) {
m.peers.AddPeer(peer)
}
func (m *Manager) processMsg(peerID string, msgType byte, msg ConsensusMessage) {
peer := m.peers.GetPeer(peerID)
if peer == nil {
return
}
logrus.WithFields(logrus.Fields{"module": logModule, "peer": peer.Addr(), "type": reflect.TypeOf(msg), "message": msg.String()}).Debug("receive message from peer")
switch msg := msg.(type) {
case *BlockProposeMsg:
m.handleBlockProposeMsg(peerID, msg)
case *BlockSignatureMsg:
m.handleBlockSignatureMsg(peerID, msg)
default:
logrus.WithFields(logrus.Fields{"module": logModule, "peer": peerID, "message_type": reflect.TypeOf(msg)}).Error("unhandled message type")
}
}
func (m *Manager) handleBlockProposeMsg(peerID string, msg *BlockProposeMsg) {
block, err := msg.GetProposeBlock()
if err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Warning("failed on get propose block")
return
}
hash := block.Hash()
m.peers.MarkBlock(peerID, &hash)
m.blockFetcher.processNewBlock(&blockMsg{peerID: peerID, block: block})
m.peers.SetStatus(peerID, block.Height, &hash)
}
func (m *Manager) handleBlockSignatureMsg(peerID string, msg *BlockSignatureMsg) {
m.peers.MarkBlockSignature(peerID, msg.Signature)
blockHash := bc.NewHash(msg.BlockHash)
if err := m.chain.ProcessBlockSignature(msg.Signature, msg.PubKey, &blockHash); err != nil {
m.peers.ProcessIllegal(peerID, security.LevelMsgIllegal, err.Error())
return
}
}
func (m *Manager) blockProposeMsgBroadcastLoop() {
blockProposeMsgSub, err := m.eventDispatcher.Subscribe(event.NewProposedBlockEvent{})
if err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Error("failed on subscribe NewBlockProposeEvent")
return
}
defer blockProposeMsgSub.Unsubscribe()
for {
select {
case obj, ok := <-blockProposeMsgSub.Chan():
if !ok {
logrus.WithFields(logrus.Fields{"module": logModule}).Warning("blockProposeMsgSub channel closed")
return
}
ev, ok := obj.Data.(event.NewProposedBlockEvent)
if !ok {
logrus.WithFields(logrus.Fields{"module": logModule}).Error("event type error")
continue
}
proposeMsg, err := NewBlockProposeMsg(&ev.Block)
if err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Error("failed on create BlockProposeMsg")
return
}
if err := m.peers.BroadcastMsg(NewBroadcastMsg(proposeMsg, consensusChannel)); err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Error("failed on broadcast BlockProposeBroadcastMsg")
continue
}
case <-m.quit:
return
}
}
}
func (m *Manager) blockSignatureMsgBroadcastLoop() {
blockSignatureMsgSub, err := m.eventDispatcher.Subscribe(event.BlockSignatureEvent{})
if err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Error("failed on subscribe BlockSignatureEvent")
return
}
defer blockSignatureMsgSub.Unsubscribe()
for {
select {
case obj, ok := <-blockSignatureMsgSub.Chan():
if !ok {
logrus.WithFields(logrus.Fields{"module": logModule}).Warning("blockProposeMsgSub channel closed")
return
}
ev, ok := obj.Data.(event.BlockSignatureEvent)
if !ok {
logrus.WithFields(logrus.Fields{"module": logModule}).Error("event type error")
continue
}
blockSignatureMsg := NewBroadcastMsg(NewBlockSignatureMsg(ev.BlockHash, ev.Signature, ev.XPub), consensusChannel)
if err := m.peers.BroadcastMsg(blockSignatureMsg); err != nil {
logrus.WithFields(logrus.Fields{"module": logModule, "err": err}).Error("failed on broadcast BlockSignBroadcastMsg.")
continue
}
case <-m.quit:
return
}
}
}
func (m *Manager) removePeer(peerID string) {
m.peers.RemovePeer(peerID)
}
//Start consensus manager service.
func (m *Manager) Start() error {
go m.blockFetcher.blockProcessorLoop()
go m.blockProposeMsgBroadcastLoop()
go m.blockSignatureMsgBroadcastLoop()
return nil
}
//Stop consensus manager service.
func (m *Manager) Stop() {
close(m.quit)
}