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925 lines
35 KiB
925 lines
35 KiB
package consensus
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import (
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"bytes"
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"encoding/binary"
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"encoding/hex"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/rlp"
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protobuf "github.com/golang/protobuf/proto"
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"github.com/harmony-one/bls/ffi/go/bls"
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"github.com/harmony-one/harmony/api/proto"
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msg_pb "github.com/harmony-one/harmony/api/proto/message"
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"github.com/harmony-one/harmony/api/service/explorer"
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"github.com/harmony-one/harmony/core/types"
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nodeconfig "github.com/harmony-one/harmony/internal/configs/node"
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"github.com/harmony-one/harmony/internal/ctxerror"
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"github.com/harmony-one/harmony/internal/utils"
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"github.com/harmony-one/harmony/p2p"
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"github.com/harmony-one/harmony/p2p/host"
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)
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// handleMessageUpdate will update the consensus state according to received message
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func (consensus *Consensus) handleMessageUpdate(payload []byte) {
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if len(payload) == 0 {
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return
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}
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msg := &msg_pb.Message{}
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err := protobuf.Unmarshal(payload, msg)
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if err != nil {
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utils.GetLogger().Error("Failed to unmarshal message payload.", "err", err, "consensus", consensus)
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return
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}
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// when node is in ViewChanging mode, it still accepts normal message into PbftLog to avoid possible trap forever
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// but drop PREPARE and COMMIT which are message types for leader
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if consensus.mode.Mode() == ViewChanging && (msg.Type == msg_pb.MessageType_PREPARE || msg.Type == msg_pb.MessageType_COMMIT) {
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return
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}
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if msg.Type == msg_pb.MessageType_VIEWCHANGE || msg.Type == msg_pb.MessageType_NEWVIEW {
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if msg.GetViewchange() != nil && msg.GetViewchange().ShardId != consensus.ShardID {
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consensus.getLogger().Warn("Received view change message from different shard",
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"myShardId", consensus.ShardID, "receivedShardId", msg.GetViewchange().ShardId)
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return
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}
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} else {
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if msg.GetConsensus() != nil && msg.GetConsensus().ShardId != consensus.ShardID {
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consensus.getLogger().Warn("Received consensus message from different shard",
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"myShardId", consensus.ShardID, "receivedShardId", msg.GetConsensus().ShardId)
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return
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}
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}
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switch msg.Type {
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case msg_pb.MessageType_ANNOUNCE:
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consensus.onAnnounce(msg)
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case msg_pb.MessageType_PREPARE:
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consensus.onPrepare(msg)
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case msg_pb.MessageType_PREPARED:
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consensus.onPrepared(msg)
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case msg_pb.MessageType_COMMIT:
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consensus.onCommit(msg)
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case msg_pb.MessageType_COMMITTED:
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consensus.onCommitted(msg)
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case msg_pb.MessageType_VIEWCHANGE:
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consensus.onViewChange(msg)
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case msg_pb.MessageType_NEWVIEW:
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consensus.onNewView(msg)
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}
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}
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// TODO: move to consensus_leader.go later
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func (consensus *Consensus) announce(block *types.Block) {
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blockHash := block.Hash()
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copy(consensus.blockHash[:], blockHash[:])
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// prepare message and broadcast to validators
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encodedBlock, err := rlp.EncodeToBytes(block)
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if err != nil {
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consensus.getLogger().Debug("[Announce] Failed encoding block")
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return
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}
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encodedBlockHeader, err := rlp.EncodeToBytes(block.Header())
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if err != nil {
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consensus.getLogger().Debug("[Announce] Failed encoding block header")
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return
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}
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consensus.block = encodedBlock
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consensus.blockHeader = encodedBlockHeader
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msgToSend := consensus.constructAnnounceMessage()
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// save announce message to PbftLog
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msgPayload, _ := proto.GetConsensusMessagePayload(msgToSend)
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msg := &msg_pb.Message{}
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_ = protobuf.Unmarshal(msgPayload, msg)
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pbftMsg, err := ParsePbftMessage(msg)
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if err != nil {
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consensus.getLogger().Warn("[Announce] Unable to parse pbft message", "error", err)
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return
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}
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consensus.PbftLog.AddMessage(pbftMsg)
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consensus.PbftLog.AddBlock(block)
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// Leader sign the block hash itself
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consensus.prepareSigs[consensus.PubKey.SerializeToHexStr()] = consensus.priKey.SignHash(consensus.blockHash[:])
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if err := consensus.prepareBitmap.SetKey(consensus.PubKey, true); err != nil {
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consensus.getLogger().Warn("[Announce] Leader prepareBitmap SetKey failed", "error", err)
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return
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}
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// Construct broadcast p2p message
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if err := consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend)); err != nil {
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consensus.getLogger().Warn("[Announce] Cannot send announce message", "groupID", p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID)))
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} else {
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consensus.getLogger().Debug("[Announce] Sent Announce Message!!", "BlockHash", block.Hash(), "BlockNum", block.NumberU64())
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}
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consensus.getLogger().Debug("[Announce] Switching phase", "From", consensus.phase, "To", Prepare)
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consensus.switchPhase(Prepare, true)
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}
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func (consensus *Consensus) onAnnounce(msg *msg_pb.Message) {
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consensus.getLogger().Debug("[OnAnnounce] Receive announce message")
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if consensus.PubKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal {
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return
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}
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senderKey, err := consensus.verifySenderKey(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnAnnounce] VerifySenderKey failed", "error", err)
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return
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}
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if !senderKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal && !consensus.ignoreViewIDCheck {
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consensus.getLogger().Warn("[OnAnnounce] SenderKey not match leader PubKey", "senderKey", senderKey.SerializeToHexStr(), "leaderKey", consensus.LeaderPubKey.SerializeToHexStr())
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return
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}
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if err = verifyMessageSig(senderKey, msg); err != nil {
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consensus.getLogger().Debug("[OnAnnounce] Failed to verify leader signature", "error", err)
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return
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}
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recvMsg, err := ParsePbftMessage(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnAnnounce] Unparseable leader message", "error", err, "MsgBlockNum", recvMsg.BlockNum)
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return
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}
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// verify validity of block header object
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blockHeader := recvMsg.Payload
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var headerObj types.Header
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err = rlp.DecodeBytes(blockHeader, &headerObj)
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if err != nil {
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consensus.getLogger().Warn("[OnAnnounce] Unparseable block header data", "error", err, "MsgBlockNum", recvMsg.BlockNum)
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return
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}
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if recvMsg.BlockNum < consensus.blockNum || recvMsg.BlockNum != headerObj.Number.Uint64() {
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consensus.getLogger().Debug("[OnAnnounce] BlockNum not match", "MsgBlockNum", recvMsg.BlockNum, "BlockNum", headerObj.Number)
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return
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}
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if consensus.mode.Mode() == Normal {
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if err = consensus.VerifyHeader(consensus.ChainReader, &headerObj, false); err != nil {
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consensus.getLogger().Warn("[OnAnnounce] Block content is not verified successfully", "error", err, "inChain", consensus.ChainReader.CurrentHeader().Number, "MsgBlockNum", headerObj.Number)
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return
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}
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}
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logMsgs := consensus.PbftLog.GetMessagesByTypeSeqView(msg_pb.MessageType_ANNOUNCE, recvMsg.BlockNum, recvMsg.ViewID)
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if len(logMsgs) > 0 {
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if logMsgs[0].BlockHash != recvMsg.BlockHash {
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consensus.getLogger().Debug("[OnAnnounce] Leader is malicious", "leaderKey", consensus.LeaderPubKey.SerializeToHexStr())
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consensus.startViewChange(consensus.viewID + 1)
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}
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return
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}
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consensus.getLogger().Debug("[OnAnnounce] Announce message Added", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum)
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consensus.PbftLog.AddMessage(recvMsg)
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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consensus.blockHash = recvMsg.BlockHash
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// we have already added message and block, skip check viewID and send prepare message if is in ViewChanging mode
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if consensus.mode.Mode() == ViewChanging {
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consensus.getLogger().Debug("[OnAnnounce] Still in ViewChanging Mode, Exiting !!")
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return
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}
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if consensus.checkViewID(recvMsg) != nil {
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if consensus.mode.Mode() == Normal {
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consensus.getLogger().Debug("[OnAnnounce] ViewID check failed", "MsgViewID", recvMsg.ViewID, "msgBlockNum", recvMsg.BlockNum)
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}
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return
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}
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consensus.prepare()
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return
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}
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// tryPrepare will try to send prepare message
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func (consensus *Consensus) prepare() {
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// Construct and send prepare message
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msgToSend := consensus.constructPrepareMessage()
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// TODO: this will not return immediatey, may block
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if err := consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend)); err != nil {
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consensus.getLogger().Warn("[OnAnnounce] Cannot send prepare message")
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} else {
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consensus.getLogger().Info("[OnAnnounce] Sent Prepare Message!!", "BlockHash", hex.EncodeToString(consensus.blockHash[:]))
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}
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consensus.getLogger().Debug("[Announce] Switching Phase", "From", consensus.phase, "To", Prepare)
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consensus.switchPhase(Prepare, true)
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}
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// TODO: move to consensus_leader.go later
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func (consensus *Consensus) onPrepare(msg *msg_pb.Message) {
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if !consensus.PubKey.IsEqual(consensus.LeaderPubKey) {
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return
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}
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senderKey, err := consensus.verifySenderKey(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnPrepare] VerifySenderKey failed", "error", err)
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return
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}
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if err = verifyMessageSig(senderKey, msg); err != nil {
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consensus.getLogger().Debug("[OnPrepare] Failed to verify sender's signature", "error", err)
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return
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}
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recvMsg, err := ParsePbftMessage(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnPrepare] Unparseable validator message", "error", err)
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return
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}
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if recvMsg.ViewID != consensus.viewID || recvMsg.BlockNum != consensus.blockNum {
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consensus.getLogger().Debug("[OnPrepare] Message ViewId or BlockNum not match",
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"MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum)
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return
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}
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if !consensus.PbftLog.HasMatchingViewAnnounce(consensus.blockNum, consensus.viewID, recvMsg.BlockHash) {
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consensus.getLogger().Debug("[OnPrepare] No Matching Announce message", "MsgblockHash", recvMsg.BlockHash, "MsgBlockNum", recvMsg.BlockNum)
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return
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}
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validatorPubKey := recvMsg.SenderPubkey.SerializeToHexStr()
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prepareSig := recvMsg.Payload
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prepareSigs := consensus.prepareSigs
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prepareBitmap := consensus.prepareBitmap
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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if len(prepareSigs) >= consensus.Quorum() {
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// already have enough signatures
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consensus.getLogger().Info("[OnPrepare] Received Additional Prepare Message", "ValidatorPubKey", validatorPubKey)
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return
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}
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// proceed only when the message is not received before
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_, ok := prepareSigs[validatorPubKey]
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if ok {
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consensus.getLogger().Debug("[OnPrepare] Already Received prepare message from the validator", "ValidatorPubKey", validatorPubKey)
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return
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}
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// Check BLS signature for the multi-sig
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var sign bls.Sign
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err = sign.Deserialize(prepareSig)
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if err != nil {
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consensus.getLogger().Error("[OnPrepare] Failed to deserialize bls signature", "ValidatorPubKey", validatorPubKey)
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return
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}
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if !sign.VerifyHash(recvMsg.SenderPubkey, consensus.blockHash[:]) {
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consensus.getLogger().Error("[OnPrepare] Received invalid BLS signature", "ValidatorPubKey", validatorPubKey)
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return
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}
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consensus.getLogger().Debug("[OnPrepare] Received New Prepare Signature", "NumReceivedSoFar", len(prepareSigs), "validatorPubKey", validatorPubKey, "PublicKeys", len(consensus.PublicKeys))
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prepareSigs[validatorPubKey] = &sign
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// Set the bitmap indicating that this validator signed.
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if err := prepareBitmap.SetKey(recvMsg.SenderPubkey, true); err != nil {
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consensus.getLogger().Warn("[OnPrepare] prepareBitmap.SetKey failed", "error", err)
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return
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}
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if len(prepareSigs) >= consensus.Quorum() {
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consensus.getLogger().Debug("[OnPrepare] Received Enough Prepare Signatures", "NumReceivedSoFar", len(prepareSigs), "PublicKeys", len(consensus.PublicKeys))
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// Construct and broadcast prepared message
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msgToSend, aggSig := consensus.constructPreparedMessage()
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consensus.aggregatedPrepareSig = aggSig
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//leader adds prepared message to log
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msgPayload, _ := proto.GetConsensusMessagePayload(msgToSend)
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msg := &msg_pb.Message{}
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_ = protobuf.Unmarshal(msgPayload, msg)
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pbftMsg, err := ParsePbftMessage(msg)
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if err != nil {
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consensus.getLogger().Warn("[OnPrepare] Unable to parse pbft message", "error", err)
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return
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}
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consensus.PbftLog.AddMessage(pbftMsg)
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// Leader add commit phase signature
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blockNumHash := make([]byte, 8)
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binary.LittleEndian.PutUint64(blockNumHash, consensus.blockNum)
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commitPayload := append(blockNumHash, consensus.blockHash[:]...)
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consensus.commitSigs[consensus.PubKey.SerializeToHexStr()] = consensus.priKey.SignHash(commitPayload)
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if err := consensus.commitBitmap.SetKey(consensus.PubKey, true); err != nil {
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consensus.getLogger().Debug("[OnPrepare] Leader commit bitmap set failed")
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return
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}
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if err := consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend)); err != nil {
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consensus.getLogger().Warn("[OnPrepare] Cannot send prepared message")
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} else {
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consensus.getLogger().Debug("[OnPrepare] Sent Prepared Message!!", "BlockHash", consensus.blockHash, "BlockNum", consensus.blockNum)
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}
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consensus.getLogger().Debug("[OnPrepare] Switching phase", "From", consensus.phase, "To", Commit)
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consensus.switchPhase(Commit, true)
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}
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return
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}
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func (consensus *Consensus) onPrepared(msg *msg_pb.Message) {
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consensus.getLogger().Debug("[OnPrepared] Received Prepared message")
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if consensus.PubKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal {
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return
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}
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senderKey, err := consensus.verifySenderKey(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnPrepared] VerifySenderKey failed", "error", err)
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return
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}
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if !senderKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal && !consensus.ignoreViewIDCheck {
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consensus.getLogger().Warn("[OnPrepared] SenderKey not match leader PubKey")
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return
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}
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if err := verifyMessageSig(senderKey, msg); err != nil {
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consensus.getLogger().Debug("[OnPrepared] Failed to verify sender's signature", "error", err)
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return
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}
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recvMsg, err := ParsePbftMessage(msg)
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if err != nil {
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consensus.getLogger().Debug("[OnPrepared] Unparseable validator message", "error", err)
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return
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}
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consensus.getLogger().Info("[OnPrepared] Received prepared message", "MsgBlockNum", recvMsg.BlockNum, "MsgViewID", recvMsg.ViewID)
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if recvMsg.BlockNum < consensus.blockNum {
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consensus.getLogger().Debug("Old Block Received, ignoring!!",
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"MsgBlockNum", recvMsg.BlockNum)
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return
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}
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// check validity of prepared signature
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blockHash := recvMsg.BlockHash
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aggSig, mask, err := consensus.ReadSignatureBitmapPayload(recvMsg.Payload, 0)
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if err != nil {
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consensus.getLogger().Error("ReadSignatureBitmapPayload failed!!", "error", err)
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return
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}
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if count := utils.CountOneBits(mask.Bitmap); count < consensus.Quorum() {
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consensus.getLogger().Debug("Not enough signatures in the Prepared msg", "Need", consensus.Quorum(), "Got", count)
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return
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}
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if !aggSig.VerifyHash(mask.AggregatePublic, blockHash[:]) {
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myBlockHash := common.Hash{}
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myBlockHash.SetBytes(consensus.blockHash[:])
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consensus.getLogger().Warn("[OnPrepared] failed to verify multi signature for prepare phase", "MsgBlockHash", recvMsg.BlockHash, "myBlockHash", myBlockHash)
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return
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}
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// check validity of block
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block := recvMsg.Block
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var blockObj types.Block
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err = rlp.DecodeBytes(block, &blockObj)
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if err != nil {
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consensus.getLogger().Warn("[OnPrepared] Unparseable block header data", "error", err, "MsgBlockNum", recvMsg.BlockNum)
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return
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}
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if blockObj.NumberU64() != recvMsg.BlockNum || recvMsg.BlockNum < consensus.blockNum {
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consensus.getLogger().Warn("[OnPrepared] BlockNum not match", "MsgBlockNum", recvMsg.BlockNum, "blockNum", blockObj.NumberU64())
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return
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}
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if blockObj.Header().Hash() != recvMsg.BlockHash {
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consensus.getLogger().Warn("[OnPrepared] BlockHash not match", "MsgBlockNum", recvMsg.BlockNum, "MsgBlockHash", recvMsg.BlockHash, "blockObjHash", blockObj.Header().Hash())
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return
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}
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if consensus.mode.Mode() == Normal {
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if err := consensus.VerifyHeader(consensus.ChainReader, blockObj.Header(), false); err != nil {
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consensus.getLogger().Warn("[OnPrepared] Block header is not verified successfully", "error", err, "inChain", consensus.ChainReader.CurrentHeader().Number, "MsgBlockNum", blockObj.Header().Number)
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return
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}
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if consensus.BlockVerifier == nil {
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// do nothing
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} else if err := consensus.BlockVerifier(&blockObj); err != nil {
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consensus.getLogger().Info("[OnPrepared] Block verification faied")
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return
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}
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}
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consensus.PbftLog.AddBlock(&blockObj)
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recvMsg.Block = []byte{} // save memory space
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consensus.PbftLog.AddMessage(recvMsg)
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consensus.getLogger().Debug("[OnPrepared] Prepared message and block added", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum, "blockHash", recvMsg.BlockHash)
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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consensus.tryCatchup()
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if consensus.mode.Mode() == ViewChanging {
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consensus.getLogger().Debug("[OnPrepared] Still in ViewChanging mode, Exiting !!")
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return
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}
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if consensus.checkViewID(recvMsg) != nil {
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if consensus.mode.Mode() == Normal {
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consensus.getLogger().Debug("[OnPrepared] ViewID check failed", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum)
|
|
}
|
|
return
|
|
}
|
|
if recvMsg.BlockNum > consensus.blockNum {
|
|
consensus.getLogger().Debug("[OnPrepared] Future Block Received, ignoring!！",
|
|
"MsgBlockNum", recvMsg.BlockNum)
|
|
return
|
|
}
|
|
|
|
// add block field
|
|
blockPayload := make([]byte, len(block))
|
|
copy(blockPayload[:], block[:])
|
|
consensus.block = blockPayload
|
|
|
|
// add preparedSig field
|
|
consensus.aggregatedPrepareSig = aggSig
|
|
consensus.prepareBitmap = mask
|
|
|
|
// Optimistically add blockhash field of prepare message
|
|
emptyHash := [32]byte{}
|
|
if bytes.Compare(consensus.blockHash[:], emptyHash[:]) == 0 {
|
|
copy(consensus.blockHash[:], blockHash[:])
|
|
}
|
|
|
|
// Construct and send the commit message
|
|
blockNumBytes := make([]byte, 8)
|
|
binary.LittleEndian.PutUint64(blockNumBytes, consensus.blockNum)
|
|
commitPayload := append(blockNumBytes, consensus.blockHash[:]...)
|
|
msgToSend := consensus.constructCommitMessage(commitPayload)
|
|
|
|
// TODO: genesis account node delay for 1 second, this is a temp fix for allows FN nodes to earning reward
|
|
if consensus.delayCommit > 0 {
|
|
time.Sleep(consensus.delayCommit)
|
|
}
|
|
|
|
if err := consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend)); err != nil {
|
|
consensus.getLogger().Warn("[OnPrepared] Cannot send commit message!!")
|
|
} else {
|
|
consensus.getLogger().Debug("[OnPrepared] Sent Commit Message!!", "BlockHash", consensus.blockHash, "BlockNum", consensus.blockNum)
|
|
}
|
|
|
|
consensus.getLogger().Debug("[OnPrepared] Switching phase", "From", consensus.phase, "To", Commit)
|
|
consensus.switchPhase(Commit, true)
|
|
|
|
return
|
|
}
|
|
|
|
// TODO: move it to consensus_leader.go later
|
|
func (consensus *Consensus) onCommit(msg *msg_pb.Message) {
|
|
if !consensus.PubKey.IsEqual(consensus.LeaderPubKey) {
|
|
return
|
|
}
|
|
|
|
senderKey, err := consensus.verifySenderKey(msg)
|
|
if err != nil {
|
|
consensus.getLogger().Debug("[OnCommit] VerifySenderKey Failed", "error", err)
|
|
return
|
|
}
|
|
if err = verifyMessageSig(senderKey, msg); err != nil {
|
|
consensus.getLogger().Debug("[OnCommit] Failed to verify sender's signature", "error", err)
|
|
return
|
|
}
|
|
|
|
recvMsg, err := ParsePbftMessage(msg)
|
|
if err != nil {
|
|
consensus.getLogger().Debug("[OnCommit] Parse pbft message failed", "error", err)
|
|
return
|
|
}
|
|
|
|
if recvMsg.ViewID != consensus.viewID || recvMsg.BlockNum != consensus.blockNum {
|
|
consensus.getLogger().Debug("[OnCommit] BlockNum/viewID not match", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum, "ValidatorPubKey", recvMsg.SenderPubkey.SerializeToHexStr())
|
|
return
|
|
}
|
|
|
|
if !consensus.PbftLog.HasMatchingAnnounce(consensus.blockNum, recvMsg.BlockHash) {
|
|
consensus.getLogger().Debug("[OnCommit] Cannot find matching blockhash", "MsgBlockHash", recvMsg.BlockHash, "MsgBlockNum", recvMsg.BlockNum)
|
|
return
|
|
}
|
|
|
|
if !consensus.PbftLog.HasMatchingPrepared(consensus.blockNum, recvMsg.BlockHash) {
|
|
consensus.getLogger().Debug("[OnCommit] Cannot find matching prepared message", "blockHash", recvMsg.BlockHash)
|
|
return
|
|
}
|
|
|
|
validatorPubKey := recvMsg.SenderPubkey.SerializeToHexStr()
|
|
|
|
commitSig := recvMsg.Payload
|
|
|
|
consensus.mutex.Lock()
|
|
defer consensus.mutex.Unlock()
|
|
|
|
if !consensus.IsValidatorInCommittee(recvMsg.SenderPubkey) {
|
|
consensus.getLogger().Error("[OnCommit] Invalid validator", "validatorPubKey", validatorPubKey)
|
|
return
|
|
}
|
|
|
|
commitSigs := consensus.commitSigs
|
|
commitBitmap := consensus.commitBitmap
|
|
|
|
// proceed only when the message is not received before
|
|
_, ok := commitSigs[validatorPubKey]
|
|
if ok {
|
|
consensus.getLogger().Info("[OnCommit] Already received commit message from the validator", "validatorPubKey", validatorPubKey)
|
|
return
|
|
}
|
|
|
|
quorumWasMet := len(commitSigs) >= consensus.Quorum()
|
|
|
|
// Verify the signature on commitPayload is correct
|
|
var sign bls.Sign
|
|
err = sign.Deserialize(commitSig)
|
|
if err != nil {
|
|
consensus.getLogger().Debug("[OnCommit] Failed to deserialize bls signature", "validatorPubKey", validatorPubKey)
|
|
return
|
|
}
|
|
blockNumHash := make([]byte, 8)
|
|
binary.LittleEndian.PutUint64(blockNumHash, recvMsg.BlockNum)
|
|
commitPayload := append(blockNumHash, recvMsg.BlockHash[:]...)
|
|
if !sign.VerifyHash(recvMsg.SenderPubkey, commitPayload) {
|
|
consensus.getLogger().Error("[OnCommit] Cannot verify commit message", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum)
|
|
return
|
|
}
|
|
|
|
consensus.getLogger().Debug("[OnCommit] Received new commit message", "numReceivedSoFar", len(commitSigs), "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum, "validatorPubKey", validatorPubKey)
|
|
commitSigs[validatorPubKey] = &sign
|
|
// Set the bitmap indicating that this validator signed.
|
|
if err := commitBitmap.SetKey(recvMsg.SenderPubkey, true); err != nil {
|
|
consensus.getLogger().Warn("[OnCommit] commitBitmap.SetKey failed", "error", err)
|
|
return
|
|
}
|
|
|
|
quorumIsMet := len(commitSigs) >= consensus.Quorum()
|
|
rewardThresholdIsMet := len(commitSigs) >= consensus.RewardThreshold()
|
|
|
|
if !quorumWasMet && quorumIsMet {
|
|
consensus.getLogger().Info("[OnCommit] 2/3 Enough commits received", "NumCommits", len(commitSigs))
|
|
go func(viewID uint64) {
|
|
time.Sleep(2 * time.Second)
|
|
consensus.getLogger().Debug("[OnCommit] Commit Grace Period Ended", "NumCommits", len(commitSigs))
|
|
consensus.commitFinishChan <- viewID
|
|
}(consensus.viewID)
|
|
}
|
|
|
|
if rewardThresholdIsMet {
|
|
go func(viewID uint64) {
|
|
consensus.commitFinishChan <- viewID
|
|
consensus.getLogger().Debug("[OnCommit] 90% Enough commits received", "NumCommits", len(commitSigs))
|
|
}(consensus.viewID)
|
|
}
|
|
}
|
|
|
|
func (consensus *Consensus) finalizeCommits() {
|
|
consensus.getLogger().Info("[Finalizing] Finalizing Block", "NumCommits", len(consensus.commitSigs))
|
|
|
|
beforeCatchupNum := consensus.blockNum
|
|
beforeCatchupViewID := consensus.viewID
|
|
|
|
// Construct committed message
|
|
msgToSend, aggSig := consensus.constructCommittedMessage()
|
|
consensus.aggregatedCommitSig = aggSig // this may not needed
|
|
|
|
// leader adds committed message to log
|
|
msgPayload, _ := proto.GetConsensusMessagePayload(msgToSend)
|
|
msg := &msg_pb.Message{}
|
|
_ = protobuf.Unmarshal(msgPayload, msg)
|
|
pbftMsg, err := ParsePbftMessage(msg)
|
|
if err != nil {
|
|
consensus.getLogger().Warn("[FinalizeCommits] Unable to parse pbft message", "error", err)
|
|
return
|
|
}
|
|
consensus.PbftLog.AddMessage(pbftMsg)
|
|
|
|
// find correct block content
|
|
block := consensus.PbftLog.GetBlockByHash(consensus.blockHash)
|
|
if block == nil {
|
|
consensus.getLogger().Warn("[FinalizeCommits] Cannot find block by hash", "blockHash", hex.EncodeToString(consensus.blockHash[:]))
|
|
return
|
|
}
|
|
consensus.tryCatchup()
|
|
if consensus.blockNum-beforeCatchupNum != 1 {
|
|
consensus.getLogger().Warn("[FinalizeCommits] Leader cannot provide the correct block for committed message", "beforeCatchupBlockNum", beforeCatchupNum)
|
|
return
|
|
}
|
|
// if leader success finalize the block, send committed message to validators
|
|
if err := consensus.host.SendMessageToGroups([]p2p.GroupID{p2p.NewGroupIDByShardID(p2p.ShardID(consensus.ShardID))}, host.ConstructP2pMessage(byte(17), msgToSend)); err != nil {
|
|
consensus.getLogger().Warn("[Finalizing] Cannot send committed message", "error", err)
|
|
} else {
|
|
consensus.getLogger().Debug("[Finalizing] Sent Committed Message", "BlockHash", consensus.blockHash, "BlockNum", consensus.blockNum)
|
|
}
|
|
|
|
consensus.reportMetrics(*block)
|
|
|
|
// Dump new block into level db
|
|
// In current code, we add signatures in block in tryCatchup, the block dump to explorer does not contains signatures
|
|
// but since explorer doesn't need signatures, it should be fine
|
|
// in future, we will move signatures to next block
|
|
explorer.GetStorageInstance(consensus.leader.IP, consensus.leader.Port, true).Dump(block, beforeCatchupNum)
|
|
|
|
if consensus.consensusTimeout[timeoutBootstrap].IsActive() {
|
|
consensus.consensusTimeout[timeoutBootstrap].Stop()
|
|
consensus.getLogger().Debug("[Finalizing] Start consensus timer; stop bootstrap timer only once")
|
|
} else {
|
|
consensus.getLogger().Debug("[Finalizing] Start consensus timer")
|
|
}
|
|
consensus.consensusTimeout[timeoutConsensus].Start()
|
|
|
|
consensus.getLogger().Info("HOORAY!!!!!!! CONSENSUS REACHED!!!!!!!", "BlockNum", beforeCatchupNum, "ViewId", beforeCatchupViewID, "BlockHash", block.Hash(), "index", consensus.getIndexOfPubKey(consensus.PubKey))
|
|
|
|
// Send signal to Node so the new block can be added and new round of consensus can be triggered
|
|
consensus.ReadySignal <- struct{}{}
|
|
}
|
|
|
|
func (consensus *Consensus) onCommitted(msg *msg_pb.Message) {
|
|
consensus.getLogger().Debug("[OnCommitted] Receive committed message")
|
|
|
|
if consensus.PubKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal {
|
|
return
|
|
}
|
|
|
|
senderKey, err := consensus.verifySenderKey(msg)
|
|
if err != nil {
|
|
consensus.getLogger().Warn("[OnCommitted] verifySenderKey failed", "error", err)
|
|
return
|
|
}
|
|
if !senderKey.IsEqual(consensus.LeaderPubKey) && consensus.mode.Mode() == Normal && !consensus.ignoreViewIDCheck {
|
|
consensus.getLogger().Warn("[OnCommitted] senderKey not match leader PubKey")
|
|
return
|
|
}
|
|
if err = verifyMessageSig(senderKey, msg); err != nil {
|
|
consensus.getLogger().Warn("[OnCommitted] Failed to verify sender's signature", "error", err)
|
|
return
|
|
}
|
|
|
|
recvMsg, err := ParsePbftMessage(msg)
|
|
if err != nil {
|
|
consensus.getLogger().Warn("[OnCommitted] unable to parse msg", "error", err)
|
|
return
|
|
}
|
|
if recvMsg.BlockNum < consensus.blockNum {
|
|
consensus.getLogger().Info("[OnCommitted] Received Old Blocks!！", "MsgBlockNum", recvMsg.BlockNum)
|
|
return
|
|
}
|
|
|
|
aggSig, mask, err := consensus.ReadSignatureBitmapPayload(recvMsg.Payload, 0)
|
|
if err != nil {
|
|
consensus.getLogger().Error("[OnCommitted] readSignatureBitmapPayload failed", "error", err)
|
|
return
|
|
}
|
|
|
|
// check has 2f+1 signatures
|
|
if count := utils.CountOneBits(mask.Bitmap); count < consensus.Quorum() {
|
|
consensus.getLogger().Warn("[OnCommitted] Not enough signature in committed msg", "need", consensus.Quorum(), "got", count)
|
|
return
|
|
}
|
|
|
|
blockNumBytes := make([]byte, 8)
|
|
binary.LittleEndian.PutUint64(blockNumBytes, recvMsg.BlockNum)
|
|
commitPayload := append(blockNumBytes, recvMsg.BlockHash[:]...)
|
|
if !aggSig.VerifyHash(mask.AggregatePublic, commitPayload) {
|
|
consensus.getLogger().Error("[OnCommitted] Failed to verify the multi signature for commit phase", "MsgBlockNum", recvMsg.BlockNum)
|
|
return
|
|
}
|
|
|
|
consensus.PbftLog.AddMessage(recvMsg)
|
|
consensus.getLogger().Debug("[OnCommitted] Committed message added", "MsgViewID", recvMsg.ViewID, "MsgBlockNum", recvMsg.BlockNum)
|
|
|
|
consensus.mutex.Lock()
|
|
defer consensus.mutex.Unlock()
|
|
|
|
consensus.aggregatedCommitSig = aggSig
|
|
consensus.commitBitmap = mask
|
|
|
|
if recvMsg.BlockNum-consensus.blockNum > consensusBlockNumBuffer {
|
|
consensus.getLogger().Debug("[OnCommitted] out of sync", "MsgBlockNum", recvMsg.BlockNum)
|
|
go func() {
|
|
select {
|
|
case consensus.blockNumLowChan <- struct{}{}:
|
|
consensus.mode.SetMode(Syncing)
|
|
for _, v := range consensus.consensusTimeout {
|
|
v.Stop()
|
|
}
|
|
case <-time.After(1 * time.Second):
|
|
}
|
|
}()
|
|
return
|
|
}
|
|
|
|
// if consensus.checkViewID(recvMsg) != nil {
|
|
// consensus.getLogger().Debug("viewID check failed", "viewID", recvMsg.ViewID, "myViewID", consensus.viewID)
|
|
// return
|
|
// }
|
|
|
|
consensus.tryCatchup()
|
|
if consensus.mode.Mode() == ViewChanging {
|
|
consensus.getLogger().Debug("[OnCommitted] Still in ViewChanging mode, Exiting !!")
|
|
return
|
|
}
|
|
|
|
if consensus.consensusTimeout[timeoutBootstrap].IsActive() {
|
|
consensus.consensusTimeout[timeoutBootstrap].Stop()
|
|
consensus.getLogger().Debug("[OnCommitted] Start consensus timer; stop bootstrap timer only once")
|
|
} else {
|
|
consensus.getLogger().Debug("[OnCommitted] Start consensus timer")
|
|
}
|
|
consensus.consensusTimeout[timeoutConsensus].Start()
|
|
return
|
|
}
|
|
|
|
// LastCommitSig returns the byte array of aggregated commit signature and bitmap of last block
|
|
func (consensus *Consensus) LastCommitSig() ([]byte, []byte, error) {
|
|
if consensus.blockNum <= 1 {
|
|
return nil, nil, nil
|
|
}
|
|
msgs := consensus.PbftLog.GetMessagesByTypeSeq(msg_pb.MessageType_COMMITTED, consensus.blockNum-1)
|
|
if len(msgs) != 1 {
|
|
return nil, nil, ctxerror.New("SetLastCommitSig failed with wrong number of committed message", "numCommittedMsg", len(msgs))
|
|
}
|
|
//#### Read payload data from committed msg
|
|
aggSig := make([]byte, 96)
|
|
bitmap := make([]byte, len(msgs[0].Payload)-96)
|
|
offset := 0
|
|
copy(aggSig[:], msgs[0].Payload[offset:offset+96])
|
|
offset += 96
|
|
copy(bitmap[:], msgs[0].Payload[offset:])
|
|
//#### END Read payload data from committed msg
|
|
return aggSig, bitmap, nil
|
|
}
|
|
|
|
// try to catch up if fall behind
|
|
func (consensus *Consensus) tryCatchup() {
|
|
consensus.getLogger().Info("[TryCatchup] commit new blocks")
|
|
// if consensus.phase != Commit && consensus.mode.Mode() == Normal {
|
|
// return
|
|
// }
|
|
currentBlockNum := consensus.blockNum
|
|
for {
|
|
msgs := consensus.PbftLog.GetMessagesByTypeSeq(msg_pb.MessageType_COMMITTED, consensus.blockNum)
|
|
if len(msgs) == 0 {
|
|
break
|
|
}
|
|
if len(msgs) > 1 {
|
|
consensus.getLogger().Error("[TryCatchup] DANGER!!! we should only get one committed message for a given blockNum", "numMsgs", len(msgs))
|
|
}
|
|
consensus.getLogger().Info("[TryCatchup] committed message found")
|
|
|
|
block := consensus.PbftLog.GetBlockByHash(msgs[0].BlockHash)
|
|
if block == nil {
|
|
break
|
|
}
|
|
|
|
if consensus.BlockVerifier == nil {
|
|
// do nothing
|
|
} else if err := consensus.BlockVerifier(block); err != nil {
|
|
consensus.getLogger().Info("[TryCatchup]block verification faied")
|
|
return
|
|
}
|
|
|
|
if block.ParentHash() != consensus.ChainReader.CurrentHeader().Hash() {
|
|
consensus.getLogger().Debug("[TryCatchup] parent block hash not match")
|
|
break
|
|
}
|
|
consensus.getLogger().Info("[TryCatchup] block found to commit")
|
|
|
|
preparedMsgs := consensus.PbftLog.GetMessagesByTypeSeqHash(msg_pb.MessageType_PREPARED, msgs[0].BlockNum, msgs[0].BlockHash)
|
|
msg := consensus.PbftLog.FindMessageByMaxViewID(preparedMsgs)
|
|
if msg == nil {
|
|
break
|
|
}
|
|
consensus.getLogger().Info("[TryCatchup] prepared message found to commit")
|
|
|
|
consensus.blockHash = [32]byte{}
|
|
consensus.blockNum = consensus.blockNum + 1
|
|
consensus.viewID = msgs[0].ViewID + 1
|
|
consensus.LeaderPubKey = msgs[0].SenderPubkey
|
|
|
|
consensus.getLogger().Info("[TryCatchup] Adding block to chain")
|
|
consensus.OnConsensusDone(block)
|
|
consensus.ResetState()
|
|
|
|
select {
|
|
case consensus.VerifiedNewBlock <- block:
|
|
default:
|
|
consensus.getLogger().Info("[TryCatchup] consensus verified block send to chan failed", "blockHash", block.Hash())
|
|
continue
|
|
}
|
|
|
|
break
|
|
}
|
|
if currentBlockNum < consensus.blockNum {
|
|
consensus.getLogger().Info("[TryCatchup] Catched up!", "From", currentBlockNum, "To", consensus.blockNum)
|
|
consensus.switchPhase(Announce, true)
|
|
}
|
|
// catup up and skip from view change trap
|
|
if currentBlockNum < consensus.blockNum && consensus.mode.Mode() == ViewChanging {
|
|
consensus.mode.SetMode(Normal)
|
|
consensus.consensusTimeout[timeoutViewChange].Stop()
|
|
}
|
|
// clean up old log
|
|
consensus.PbftLog.DeleteBlocksLessThan(consensus.blockNum - 1)
|
|
consensus.PbftLog.DeleteMessagesLessThan(consensus.blockNum - 1)
|
|
}
|
|
|
|
// Start waits for the next new block and run consensus
|
|
func (consensus *Consensus) Start(blockChannel chan *types.Block, stopChan chan struct{}, stoppedChan chan struct{}, startChannel chan struct{}) {
|
|
go func() {
|
|
if nodeconfig.GetDefaultConfig().IsLeader() {
|
|
consensus.getLogger().Info("[ConsensusMainLoop] Waiting for consensus start", "time", time.Now())
|
|
<-startChannel
|
|
}
|
|
consensus.getLogger().Info("[ConsensusMainLoop] Consensus started", "time", time.Now())
|
|
defer close(stoppedChan)
|
|
ticker := time.NewTicker(3 * time.Second)
|
|
consensus.consensusTimeout[timeoutBootstrap].Start()
|
|
consensus.getLogger().Debug("[ConsensusMainLoop] Start bootstrap timeout (only once)", "viewID", consensus.viewID, "block", consensus.blockNum)
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
for k, v := range consensus.consensusTimeout {
|
|
if consensus.mode.Mode() == Syncing {
|
|
v.Stop()
|
|
}
|
|
if !v.CheckExpire() {
|
|
continue
|
|
}
|
|
if k != timeoutViewChange {
|
|
consensus.getLogger().Debug("[ConsensusMainLoop] Ops Consensus Timeout!!!")
|
|
consensus.startViewChange(consensus.viewID + 1)
|
|
break
|
|
} else {
|
|
consensus.getLogger().Debug("[ConsensusMainLoop] Ops View Change Timeout!!!")
|
|
viewID := consensus.mode.ViewID()
|
|
consensus.startViewChange(viewID + 1)
|
|
break
|
|
}
|
|
}
|
|
case <-consensus.syncReadyChan:
|
|
consensus.SetBlockNum(consensus.ChainReader.CurrentHeader().Number.Uint64() + 1)
|
|
consensus.getLogger().Info("Node is in sync")
|
|
consensus.ignoreViewIDCheck = true
|
|
|
|
case <-consensus.syncNotReadyChan:
|
|
consensus.SetBlockNum(consensus.ChainReader.CurrentHeader().Number.Uint64() + 1)
|
|
consensus.mode.SetMode(Syncing)
|
|
consensus.getLogger().Info("Node is out of sync")
|
|
|
|
case newBlock := <-blockChannel:
|
|
consensus.getLogger().Info("[ConsensusMainLoop] Received Proposed New Block!", "MsgBlockNum", newBlock.NumberU64())
|
|
if consensus.ShardID == 0 {
|
|
// TODO ek/rj - re-enable this after fixing DRand
|
|
//if core.IsEpochBlock(newBlock) { // Only beacon chain do randomness generation
|
|
// // Receive pRnd from DRG protocol
|
|
// consensus.getLogger().Debug("[DRG] Waiting for pRnd")
|
|
// pRndAndBitmap := <-consensus.PRndChannel
|
|
// consensus.getLogger().Debug("[DRG] Got pRnd", "pRnd", pRndAndBitmap)
|
|
// pRnd := [32]byte{}
|
|
// copy(pRnd[:], pRndAndBitmap[:32])
|
|
// bitmap := pRndAndBitmap[32:]
|
|
// vrfBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, consensus.leader.ConsensusPubKey)
|
|
// vrfBitmap.SetMask(bitmap)
|
|
//
|
|
// // TODO: check validity of pRnd
|
|
// newBlock.AddVrf(pRnd)
|
|
//}
|
|
|
|
rnd, blockHash, err := consensus.GetNextRnd()
|
|
if err == nil {
|
|
// Verify the randomness
|
|
_ = blockHash
|
|
consensus.getLogger().Info("[ConsensusMainLoop] Adding randomness into new block", "rnd", rnd)
|
|
newBlock.AddVdf([258]byte{}) // TODO(HB): add real vdf
|
|
} else {
|
|
//consensus.getLogger().Info("Failed to get randomness", "error", err)
|
|
}
|
|
}
|
|
|
|
startTime = time.Now()
|
|
consensus.getLogger().Debug("[ConsensusMainLoop] STARTING CONSENSUS", "numTxs", len(newBlock.Transactions()), "consensus", consensus, "startTime", startTime, "publicKeys", len(consensus.PublicKeys))
|
|
consensus.announce(newBlock)
|
|
|
|
case msg := <-consensus.MsgChan:
|
|
consensus.handleMessageUpdate(msg)
|
|
|
|
case viewID := <-consensus.commitFinishChan:
|
|
func() {
|
|
consensus.mutex.Lock()
|
|
defer consensus.mutex.Unlock()
|
|
if viewID == consensus.viewID {
|
|
consensus.finalizeCommits()
|
|
}
|
|
}()
|
|
|
|
case <-stopChan:
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|