You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
427 lines
15 KiB
427 lines
15 KiB
package consensus
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/binary"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/harmony-one/bls/ffi/go/bls"
|
|
msg_pb "github.com/harmony-one/harmony/api/proto/message"
|
|
bls_cosi "github.com/harmony-one/harmony/crypto/bls"
|
|
"github.com/harmony-one/harmony/internal/utils"
|
|
"github.com/harmony-one/harmony/p2p"
|
|
"github.com/harmony-one/harmony/p2p/host"
|
|
)
|
|
|
|
// PbftPhase PBFT phases: pre-prepare, prepare and commit
|
|
type PbftPhase int
|
|
|
|
// Enum for PbftPhase
|
|
const (
|
|
Announce PbftPhase = iota
|
|
Prepare
|
|
Commit
|
|
)
|
|
|
|
// Mode determines whether a node is in normal or viewchanging mode
|
|
type Mode int
|
|
|
|
// Enum for node Mode
|
|
const (
|
|
Normal Mode = iota
|
|
ViewChanging
|
|
Syncing
|
|
)
|
|
|
|
// PbftMode contains mode and viewID of viewchanging
|
|
type PbftMode struct {
|
|
mode Mode
|
|
viewID uint32
|
|
mux sync.Mutex
|
|
}
|
|
|
|
// Mode return the current node mode
|
|
func (pm *PbftMode) Mode() Mode {
|
|
return pm.mode
|
|
}
|
|
|
|
// SetMode set the node mode as required
|
|
func (pm *PbftMode) SetMode(m Mode) {
|
|
pm.mux.Lock()
|
|
defer pm.mux.Unlock()
|
|
pm.mode = m
|
|
}
|
|
|
|
// ViewID return the current viewchanging id
|
|
func (pm *PbftMode) ViewID() uint32 {
|
|
return pm.viewID
|
|
}
|
|
|
|
// SetViewID sets the viewchanging id accordingly
|
|
func (pm *PbftMode) SetViewID(viewID uint32) {
|
|
pm.mux.Lock()
|
|
defer pm.mux.Unlock()
|
|
pm.viewID = viewID
|
|
}
|
|
|
|
// GetViewID returns the current viewchange viewID
|
|
func (pm *PbftMode) GetViewID() uint32 {
|
|
return pm.viewID
|
|
}
|
|
|
|
// switchPhase will switch PbftPhase to nextPhase if the desirePhase equals the nextPhase
|
|
func (consensus *Consensus) switchPhase(desirePhase PbftPhase) {
|
|
utils.GetLogInstance().Debug("switchPhase: ", "desirePhase", desirePhase, "myPhase", consensus.phase)
|
|
|
|
var nextPhase PbftPhase
|
|
switch consensus.phase {
|
|
case Announce:
|
|
nextPhase = Prepare
|
|
case Prepare:
|
|
nextPhase = Commit
|
|
case Commit:
|
|
nextPhase = Announce
|
|
}
|
|
if nextPhase == desirePhase {
|
|
consensus.phase = nextPhase
|
|
}
|
|
}
|
|
|
|
// GetNextLeaderKey uniquely determine who is the leader for given viewID
|
|
func (consensus *Consensus) GetNextLeaderKey() *bls.PublicKey {
|
|
idx := consensus.getIndexOfPubKey(consensus.LeaderPubKey)
|
|
if idx == -1 {
|
|
utils.GetLogInstance().Warn("GetNextLeaderKey: currentLeaderKey not found", "key", consensus.LeaderPubKey.GetHexString())
|
|
}
|
|
idx = (idx + 1) % len(consensus.PublicKeys)
|
|
return consensus.PublicKeys[idx]
|
|
}
|
|
|
|
func (consensus *Consensus) getIndexOfPubKey(pubKey *bls.PublicKey) int {
|
|
for k, v := range consensus.PublicKeys {
|
|
if v.IsEqual(pubKey) {
|
|
return k
|
|
}
|
|
}
|
|
return -1
|
|
}
|
|
|
|
// ResetViewChangeState reset the state for viewchange
|
|
func (consensus *Consensus) ResetViewChangeState() {
|
|
consensus.mode.SetMode(Normal)
|
|
bhpBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, nil)
|
|
nilBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, nil)
|
|
viewIDBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, nil)
|
|
consensus.bhpBitmap = bhpBitmap
|
|
consensus.nilBitmap = nilBitmap
|
|
consensus.viewIDBitmap = viewIDBitmap
|
|
consensus.m1Payload = []byte{}
|
|
|
|
consensus.bhpSigs = map[common.Address]*bls.Sign{}
|
|
consensus.nilSigs = map[common.Address]*bls.Sign{}
|
|
consensus.viewIDSigs = map[common.Address]*bls.Sign{}
|
|
}
|
|
|
|
func createTimeout() map[TimeoutType]*utils.Timeout {
|
|
timeouts := make(map[TimeoutType]*utils.Timeout)
|
|
timeouts[timeoutConsensus] = utils.NewTimeout(phaseDuration)
|
|
timeouts[timeoutViewChange] = utils.NewTimeout(viewChangeDuration)
|
|
timeouts[timeoutBootstrap] = utils.NewTimeout(bootstrapDuration)
|
|
return timeouts
|
|
}
|
|
|
|
// startViewChange send a new view change
|
|
func (consensus *Consensus) startViewChange(viewID uint32) {
|
|
if consensus.disableViewChange {
|
|
return
|
|
}
|
|
consensus.consensusTimeout[timeoutConsensus].Stop()
|
|
consensus.consensusTimeout[timeoutBootstrap].Stop()
|
|
consensus.mode.SetMode(ViewChanging)
|
|
consensus.mode.SetViewID(viewID)
|
|
consensus.LeaderPubKey = consensus.GetNextLeaderKey()
|
|
|
|
diff := viewID - consensus.viewID
|
|
duration := time.Duration(int64(diff) * int64(viewChangeDuration))
|
|
utils.GetLogInstance().Info("startViewChange", "viewID", viewID, "timeoutDuration", duration, "nextLeader", consensus.LeaderPubKey.GetHexString()[:10])
|
|
|
|
msgToSend := consensus.constructViewChangeMessage()
|
|
consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend))
|
|
|
|
consensus.consensusTimeout[timeoutViewChange].SetDuration(duration)
|
|
consensus.consensusTimeout[timeoutViewChange].Start()
|
|
}
|
|
|
|
// new leader send new view message
|
|
func (consensus *Consensus) startNewView() {
|
|
utils.GetLogInstance().Info("startNewView", "viewID", consensus.mode.GetViewID())
|
|
consensus.mode.SetMode(Normal)
|
|
consensus.switchPhase(Announce)
|
|
|
|
msgToSend := consensus.constructNewViewMessage()
|
|
consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend))
|
|
}
|
|
|
|
func (consensus *Consensus) onViewChange(msg *msg_pb.Message) {
|
|
senderKey, validatorAddress, err := consensus.verifyViewChangeSenderKey(msg)
|
|
if err != nil {
|
|
utils.GetLogInstance().Debug("onViewChange verifySenderKey failed", "error", err)
|
|
return
|
|
}
|
|
|
|
recvMsg, err := ParseViewChangeMessage(msg)
|
|
if err != nil {
|
|
utils.GetLogInstance().Warn("onViewChange unable to parse viewchange message")
|
|
return
|
|
}
|
|
newLeaderKey := recvMsg.LeaderPubkey
|
|
if !consensus.PubKey.IsEqual(newLeaderKey) {
|
|
return
|
|
}
|
|
|
|
utils.GetLogInstance().Warn("onViewChange received", "viewChangeID", recvMsg.ViewID, "myCurrentID", consensus.viewID, "ValidatorAddress", consensus.SelfAddress)
|
|
|
|
if consensus.blockNum > recvMsg.BlockNum {
|
|
return
|
|
}
|
|
if consensus.mode.Mode() == ViewChanging && consensus.mode.GetViewID() > recvMsg.ViewID {
|
|
return
|
|
}
|
|
if err = verifyMessageSig(senderKey, msg); err != nil {
|
|
utils.GetLogInstance().Debug("onViewChange Failed to verify sender's signature", "error", err)
|
|
return
|
|
}
|
|
|
|
consensus.vcLock.Lock()
|
|
defer consensus.vcLock.Unlock()
|
|
|
|
// add self m1 or m2 type message signature and bitmap
|
|
_, ok1 := consensus.nilSigs[consensus.SelfAddress]
|
|
_, ok2 := consensus.bhpSigs[consensus.SelfAddress]
|
|
if !(ok1 || ok2) {
|
|
// add own signature for newview message
|
|
preparedMsgs := consensus.pbftLog.GetMessagesByTypeSeq(msg_pb.MessageType_PREPARED, recvMsg.BlockNum)
|
|
preparedMsg := consensus.pbftLog.FindMessageByMaxViewID(preparedMsgs)
|
|
if preparedMsg == nil {
|
|
sign := consensus.priKey.SignHash(NIL)
|
|
consensus.nilSigs[consensus.SelfAddress] = sign
|
|
consensus.nilBitmap.SetKey(consensus.PubKey, true)
|
|
} else {
|
|
msgToSign := append(preparedMsg.BlockHash[:], preparedMsg.Payload...)
|
|
consensus.bhpSigs[consensus.SelfAddress] = consensus.priKey.SignHash(msgToSign)
|
|
consensus.bhpBitmap.SetKey(consensus.PubKey, true)
|
|
}
|
|
}
|
|
// add self m3 type message signature and bitmap
|
|
_, ok3 := consensus.viewIDSigs[consensus.SelfAddress]
|
|
if !ok3 {
|
|
viewIDHash := make([]byte, 4)
|
|
binary.LittleEndian.PutUint32(viewIDHash, recvMsg.ViewID)
|
|
sign := consensus.priKey.SignHash(viewIDHash)
|
|
consensus.viewIDSigs[consensus.SelfAddress] = sign
|
|
consensus.viewIDBitmap.SetKey(consensus.PubKey, true)
|
|
}
|
|
|
|
if len(consensus.viewIDSigs) >= consensus.Quorum() {
|
|
return
|
|
}
|
|
|
|
// m2 type message
|
|
if len(recvMsg.Payload) == 0 {
|
|
_, ok := consensus.nilSigs[validatorAddress]
|
|
if ok {
|
|
utils.GetLogInstance().Debug("onViewChange already received m2 message from the validator", "validatorAddress", validatorAddress)
|
|
return
|
|
}
|
|
|
|
if !recvMsg.ViewchangeSig.VerifyHash(senderKey, NIL) {
|
|
utils.GetLogInstance().Warn("onViewChange failed to verify signature for m2 type viewchange message")
|
|
return
|
|
}
|
|
consensus.nilSigs[validatorAddress] = recvMsg.ViewchangeSig
|
|
consensus.nilBitmap.SetKey(recvMsg.SenderPubkey, true) // Set the bitmap indicating that this validator signed.
|
|
} else { // m1 type message
|
|
_, ok := consensus.bhpSigs[validatorAddress]
|
|
if ok {
|
|
utils.GetLogInstance().Debug("onViewChange already received m1 message from the validator", "validatorAddress", validatorAddress)
|
|
return
|
|
}
|
|
if !recvMsg.ViewchangeSig.VerifyHash(recvMsg.SenderPubkey, recvMsg.Payload) {
|
|
utils.GetLogInstance().Warn("onViewChange failed to verify signature for m1 type viewchange message")
|
|
return
|
|
}
|
|
|
|
// first time receive m1 type message, need verify validity of prepared message
|
|
if len(consensus.m1Payload) == 0 || !bytes.Equal(consensus.m1Payload, recvMsg.Payload) {
|
|
if len(recvMsg.Payload) <= 32 {
|
|
utils.GetLogger().Debug("m1 recvMsg payload not enough length", "len", len(recvMsg.Payload))
|
|
return
|
|
}
|
|
blockHash := recvMsg.Payload[:32]
|
|
aggSig, mask, err := consensus.readSignatureBitmapPayload(recvMsg.Payload, 32)
|
|
if err != nil {
|
|
utils.GetLogger().Error("m1 recvMsg payload read error", "error", err)
|
|
return
|
|
}
|
|
// Verify the multi-sig for prepare phase
|
|
// TODO: add 2f+1 signature checking
|
|
if !aggSig.VerifyHash(mask.AggregatePublic, blockHash[:]) {
|
|
utils.GetLogInstance().Warn("onViewChange failed to verify multi signature for m1 prepared payload", "blockHash", blockHash)
|
|
return
|
|
}
|
|
if len(consensus.m1Payload) == 0 {
|
|
consensus.m1Payload = append(recvMsg.Payload[:0:0], recvMsg.Payload...)
|
|
}
|
|
}
|
|
consensus.bhpSigs[validatorAddress] = recvMsg.ViewchangeSig
|
|
consensus.bhpBitmap.SetKey(recvMsg.SenderPubkey, true) // Set the bitmap indicating that this validator signed.
|
|
}
|
|
|
|
// check and add viewID (m3 type) message signature
|
|
_, ok := consensus.viewIDSigs[validatorAddress]
|
|
if ok {
|
|
utils.GetLogInstance().Debug("onViewChange already received m3 viewID message from the validator", "validatorAddress", validatorAddress)
|
|
return
|
|
}
|
|
viewIDHash := make([]byte, 4)
|
|
binary.LittleEndian.PutUint32(viewIDHash, recvMsg.ViewID)
|
|
if !recvMsg.ViewidSig.VerifyHash(recvMsg.SenderPubkey, viewIDHash) {
|
|
utils.GetLogInstance().Warn("onViewChange failed to verify viewID signature", "viewID", recvMsg.ViewID)
|
|
return
|
|
}
|
|
consensus.viewIDSigs[validatorAddress] = recvMsg.ViewidSig
|
|
consensus.viewIDBitmap.SetKey(recvMsg.SenderPubkey, true) // Set the bitmap indicating that this validator signed.
|
|
|
|
if len(consensus.viewIDSigs) >= consensus.Quorum() {
|
|
consensus.mode.SetMode(Normal)
|
|
consensus.LeaderPubKey = consensus.PubKey
|
|
consensus.ResetState()
|
|
if len(consensus.m1Payload) == 0 {
|
|
go func() {
|
|
consensus.ReadySignal <- struct{}{}
|
|
}()
|
|
} else {
|
|
consensus.phase = Commit
|
|
copy(consensus.blockHash[:], consensus.m1Payload[:32])
|
|
aggSig, mask, err := consensus.readSignatureBitmapPayload(recvMsg.Payload, 32)
|
|
if err != nil {
|
|
utils.GetLogger().Error("readSignatureBitmapPayload fail", "error", err)
|
|
return
|
|
}
|
|
consensus.aggregatedPrepareSig = aggSig
|
|
consensus.prepareBitmap = mask
|
|
|
|
// Leader sign the multi-sig and bitmap (for commit phase)
|
|
consensus.commitSigs[consensus.SelfAddress] = consensus.priKey.SignHash(consensus.m1Payload[32:])
|
|
}
|
|
|
|
consensus.mode.SetViewID(recvMsg.ViewID)
|
|
msgToSend := consensus.constructNewViewMessage()
|
|
|
|
utils.GetLogInstance().Warn("onViewChange", "sent newview message", len(msgToSend))
|
|
consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend))
|
|
|
|
consensus.viewID = recvMsg.ViewID
|
|
consensus.ResetViewChangeState()
|
|
consensus.consensusTimeout[timeoutViewChange].Stop()
|
|
consensus.consensusTimeout[timeoutConsensus].Start()
|
|
}
|
|
utils.GetLogInstance().Debug("onViewChange", "numSigs", len(consensus.viewIDSigs), "needed", consensus.Quorum())
|
|
}
|
|
|
|
// TODO: move to consensus_leader.go later
|
|
func (consensus *Consensus) onNewView(msg *msg_pb.Message) {
|
|
utils.GetLogInstance().Debug("onNewView received new view message")
|
|
senderKey, _, err := consensus.verifyViewChangeSenderKey(msg)
|
|
if err != nil {
|
|
utils.GetLogInstance().Warn("onNewView verifySenderKey failed", "error", err)
|
|
return
|
|
}
|
|
recvMsg, err := consensus.ParseNewViewMessage(msg)
|
|
if err != nil {
|
|
utils.GetLogInstance().Warn("onViewChange unable to parse viewchange message")
|
|
return
|
|
}
|
|
|
|
if consensus.blockNum != recvMsg.BlockNum {
|
|
return
|
|
}
|
|
if err = verifyMessageSig(senderKey, msg); err != nil {
|
|
utils.GetLogInstance().Debug("onNewView failed to verify new leader's signature", "error", err)
|
|
return
|
|
}
|
|
|
|
consensus.vcLock.Lock()
|
|
defer consensus.vcLock.Unlock()
|
|
|
|
if recvMsg.M3AggSig == nil {
|
|
return
|
|
}
|
|
m3Sig := recvMsg.M3AggSig
|
|
m3Mask := recvMsg.M3Bitmap
|
|
viewIDHash := make([]byte, 4)
|
|
binary.LittleEndian.PutUint32(viewIDHash, recvMsg.ViewID)
|
|
// TODO check total number of sigs >= 2f+1
|
|
if !m3Sig.VerifyHash(m3Mask.AggregatePublic, viewIDHash) {
|
|
utils.GetLogInstance().Warn("onNewView unable to verify aggregated signature of m3 payload", "m3Sig", m3Sig.GetHexString()[:10], "m3Mask", m3Mask.Bitmap, "viewID", recvMsg.ViewID)
|
|
return
|
|
}
|
|
if recvMsg.M2AggSig != nil {
|
|
m2Sig := recvMsg.M2AggSig
|
|
m2Mask := recvMsg.M2Bitmap
|
|
if !m2Sig.VerifyHash(m2Mask.AggregatePublic, NIL) {
|
|
utils.GetLogInstance().Warn("onNewView unable to verify aggregated signature of m2 payload")
|
|
return
|
|
}
|
|
}
|
|
|
|
// TODO: check if M3 sigs > M1 sigs, then recvMsg.Payload should not be empty
|
|
|
|
// check validity of m1 type payload
|
|
if len(recvMsg.Payload) > 32 {
|
|
blockHash := recvMsg.Payload[:32]
|
|
aggSig, mask, err := consensus.readSignatureBitmapPayload(recvMsg.Payload, 32)
|
|
if err != nil {
|
|
utils.GetLogger().Error("unable to read signature/bitmap", "error", err)
|
|
return
|
|
}
|
|
if !aggSig.VerifyHash(mask.AggregatePublic, blockHash) {
|
|
utils.GetLogInstance().Warn("onNewView failed to verify signature for prepared message")
|
|
return
|
|
}
|
|
copy(consensus.blockHash[:], blockHash)
|
|
consensus.aggregatedPrepareSig = aggSig
|
|
consensus.prepareBitmap = mask
|
|
|
|
// create prepared message from newview
|
|
preparedMsg := PbftMessage{MessageType: msg_pb.MessageType_PREPARED, ViewID: recvMsg.ViewID, BlockNum: recvMsg.BlockNum}
|
|
preparedMsg.BlockHash = common.Hash{}
|
|
copy(preparedMsg.BlockHash[:], blockHash[:])
|
|
preparedMsg.Payload = make([]byte, len(recvMsg.Payload)-32)
|
|
copy(preparedMsg.Payload[:], recvMsg.Payload[32:])
|
|
preparedMsg.SenderPubkey = senderKey
|
|
consensus.pbftLog.AddMessage(&preparedMsg)
|
|
|
|
if recvMsg.BlockNum > consensus.blockNum {
|
|
return
|
|
}
|
|
|
|
consensus.viewID = consensus.mode.GetViewID()
|
|
// Construct and send the commit message
|
|
multiSigAndBitmap := append(aggSig.Serialize(), mask.Bitmap...)
|
|
msgToSend := consensus.constructCommitMessage(multiSigAndBitmap)
|
|
utils.GetLogInstance().Info("onNewView === commit", "sent commit message", len(msgToSend), "viewID", consensus.viewID)
|
|
consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend))
|
|
consensus.phase = Commit
|
|
} else {
|
|
consensus.ResetState()
|
|
utils.GetLogInstance().Info("onNewView === announce")
|
|
}
|
|
consensus.LeaderPubKey = senderKey
|
|
consensus.viewID = consensus.mode.GetViewID()
|
|
consensus.ResetViewChangeState()
|
|
consensus.consensusTimeout[timeoutConsensus].Start()
|
|
consensus.consensusTimeout[timeoutViewChange].Stop()
|
|
}
|
|
|