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309 lines
9.7 KiB
309 lines
9.7 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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msg_pb "github.com/harmony-one/harmony/api/proto/message"
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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/p2p/host"
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)
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func (consensus *Consensus) onAnnounce(msg *msg_pb.Message) {
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recvMsg, err := ParseFBFTMessage(msg)
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if err != nil {
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consensus.getLogger().Error().
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Err(err).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnAnnounce] Unparseable leader message")
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return
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}
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// NOTE let it handle its own logs
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if !consensus.onAnnounceSanityChecks(recvMsg) {
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return
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}
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consensus.getLogger().Debug().
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Uint64("MsgViewID", recvMsg.ViewID).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnAnnounce] Announce message Added")
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consensus.FBFTLog.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
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// and send prepare message if is in ViewChanging mode
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if consensus.current.Mode() == ViewChanging {
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consensus.getLogger().Debug().
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Msg("[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.current.Mode() == Normal {
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consensus.getLogger().Debug().
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Uint64("MsgViewID", recvMsg.ViewID).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnAnnounce] ViewID check failed")
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}
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return
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}
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consensus.prepare()
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}
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func (consensus *Consensus) prepare() {
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groupID := []nodeconfig.GroupID{nodeconfig.NewGroupIDByShardID(nodeconfig.ShardID(consensus.ShardID))}
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for i, key := range consensus.PubKey.PublicKey {
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networkMessage, err := consensus.construct(msg_pb.MessageType_PREPARE, nil, key, consensus.priKey.PrivateKey[i])
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if err != nil {
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consensus.getLogger().Err(err).
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Str("message-type", msg_pb.MessageType_PREPARE.String()).
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Msg("could not construct message")
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return
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}
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// TODO: this will not return immediatey, may block
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if consensus.current.Mode() != Listening {
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if err := consensus.msgSender.SendWithoutRetry(
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groupID,
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host.ConstructP2pMessage(byte(17), networkMessage.Bytes),
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); err != nil {
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consensus.getLogger().Warn().Err(err).Msg("[OnAnnounce] Cannot send prepare message")
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} else {
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consensus.getLogger().Info().
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Str("blockHash", hex.EncodeToString(consensus.blockHash[:])).
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Msg("[OnAnnounce] Sent Prepare Message!!")
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}
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}
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}
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consensus.getLogger().Debug().
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Str("From", consensus.phase.String()).
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Str("To", FBFTPrepare.String()).
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Msg("[Announce] Switching Phase")
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consensus.switchPhase(FBFTPrepare, true)
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}
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// if onPrepared accepts the prepared message from the leader, then
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// it will send a COMMIT message for the leader to receive on the network.
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func (consensus *Consensus) onPrepared(msg *msg_pb.Message) {
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recvMsg, err := ParseFBFTMessage(msg)
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if err != nil {
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consensus.getLogger().Debug().Err(err).Msg("[OnPrepared] Unparseable validator message")
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return
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}
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consensus.getLogger().Info().
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Uint64("MsgViewID", recvMsg.ViewID).
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Msg("[OnPrepared] Received prepared message")
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if recvMsg.BlockNum < consensus.blockNum {
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consensus.getLogger().Debug().Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("Wrong BlockNum Received, ignoring!")
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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().Err(err).Msg("ReadSignatureBitmapPayload failed!")
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return
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}
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if !consensus.Decider.IsQuorumAchievedByMask(mask) {
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consensus.getLogger().Warn().
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Msgf("[OnPrepared] Quorum Not achieved")
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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().
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Uint64("MsgViewID", recvMsg.ViewID).
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Msg("[OnPrepared] failed to verify multi signature for prepare phase")
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return
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}
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// check validity of block
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var blockObj types.Block
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if err := rlp.DecodeBytes(recvMsg.Block, &blockObj); err != nil {
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consensus.getLogger().Warn().
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Err(err).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnPrepared] Unparseable block header data")
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return
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}
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// let this handle it own logs
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if !consensus.onPreparedSanityChecks(&blockObj, recvMsg) {
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return
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}
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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consensus.FBFTLog.AddBlock(&blockObj)
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// add block field
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blockPayload := make([]byte, len(recvMsg.Block))
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copy(blockPayload[:], recvMsg.Block[:])
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consensus.block = blockPayload
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recvMsg.Block = []byte{} // save memory space
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consensus.FBFTLog.AddMessage(recvMsg)
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consensus.getLogger().Debug().
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Uint64("MsgViewID", recvMsg.ViewID).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Hex("blockHash", recvMsg.BlockHash[:]).
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Msg("[OnPrepared] Prepared message and block added")
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consensus.tryCatchup()
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if consensus.current.Mode() == ViewChanging {
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consensus.getLogger().Debug().Msg("[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.current.Mode() == Normal {
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consensus.getLogger().Debug().
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Uint64("MsgViewID", recvMsg.ViewID).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnPrepared] ViewID check failed")
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}
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return
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}
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if recvMsg.BlockNum > consensus.blockNum {
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consensus.getLogger().Debug().
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Uint64("blockNum", consensus.blockNum).
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Msg("[OnPrepared] Future Block Received, ignoring!!")
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return
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}
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// TODO: genesis account node delay for 1 second,
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// this is a temp fix for allows FN nodes to earning reward
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if consensus.delayCommit > 0 {
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time.Sleep(consensus.delayCommit)
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}
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// add preparedSig field
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consensus.aggregatedPrepareSig = aggSig
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consensus.prepareBitmap = mask
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// Optimistically add blockhash field of prepare message
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emptyHash := [32]byte{}
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if bytes.Compare(consensus.blockHash[:], emptyHash[:]) == 0 {
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copy(consensus.blockHash[:], blockHash[:])
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}
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blockNumBytes := make([]byte, 8)
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binary.LittleEndian.PutUint64(blockNumBytes, consensus.blockNum)
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groupID := []nodeconfig.GroupID{nodeconfig.NewGroupIDByShardID(nodeconfig.ShardID(consensus.ShardID))}
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for i, key := range consensus.PubKey.PublicKey {
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networkMessage, _ := consensus.construct(
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// TODO(audit): sign signature on hash+blockNum+viewID (add a hard fork)
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msg_pb.MessageType_COMMIT,
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append(blockNumBytes, consensus.blockHash[:]...),
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key, consensus.priKey.PrivateKey[i],
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)
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if consensus.current.Mode() != Listening {
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if err := consensus.msgSender.SendWithoutRetry(
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groupID,
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host.ConstructP2pMessage(byte(17), networkMessage.Bytes),
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); err != nil {
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consensus.getLogger().Warn().Msg("[OnPrepared] Cannot send commit message!!")
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} else {
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consensus.getLogger().Info().
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Uint64("blockNum", consensus.blockNum).
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Hex("blockHash", consensus.blockHash[:]).
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Msg("[OnPrepared] Sent Commit Message!!")
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}
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}
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}
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consensus.getLogger().Debug().
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Str("From", consensus.phase.String()).
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Str("To", FBFTCommit.String()).
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Msg("[OnPrepared] Switching phase")
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consensus.switchPhase(FBFTCommit, true)
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}
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func (consensus *Consensus) onCommitted(msg *msg_pb.Message) {
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recvMsg, err := ParseFBFTMessage(msg)
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if err != nil {
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consensus.getLogger().Warn().Msg("[OnCommitted] unable to parse msg")
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return
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}
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// NOTE let it handle its own logs
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if !consensus.isRightBlockNumCheck(recvMsg) {
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return
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}
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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().Err(err).Msg("[OnCommitted] readSignatureBitmapPayload failed")
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return
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}
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if !consensus.Decider.IsQuorumAchievedByMask(mask) {
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consensus.getLogger().Warn().
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Msgf("[OnCommitted] Quorum Not achieved")
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return
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}
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// TODO(audit): verify signature on hash+blockNum+viewID (add a hard fork)
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blockNumBytes := make([]byte, 8)
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binary.LittleEndian.PutUint64(blockNumBytes, recvMsg.BlockNum)
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commitPayload := append(blockNumBytes, recvMsg.BlockHash[:]...)
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if !aggSig.VerifyHash(mask.AggregatePublic, commitPayload) {
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consensus.getLogger().Error().
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnCommitted] Failed to verify the multi signature for commit phase")
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return
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}
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consensus.FBFTLog.AddMessage(recvMsg)
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consensus.ChainReader.WriteLastCommits(recvMsg.Payload)
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consensus.getLogger().Debug().
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Uint64("MsgViewID", recvMsg.ViewID).
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Uint64("MsgBlockNum", recvMsg.BlockNum).
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Msg("[OnCommitted] Committed message added")
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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consensus.aggregatedCommitSig = aggSig
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consensus.commitBitmap = mask
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if recvMsg.BlockNum-consensus.blockNum > consensusBlockNumBuffer {
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consensus.getLogger().Debug().Uint64("MsgBlockNum", recvMsg.BlockNum).Msg("[OnCommitted] out of sync")
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go func() {
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select {
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case consensus.BlockNumLowChan <- struct{}{}:
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consensus.current.SetMode(Syncing)
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for _, v := range consensus.consensusTimeout {
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v.Stop()
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}
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case <-time.After(1 * time.Second):
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}
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}()
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return
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}
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consensus.tryCatchup()
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if consensus.current.Mode() == ViewChanging {
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consensus.getLogger().Debug().Msg("[OnCommitted] Still in ViewChanging mode, Exiting!!")
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return
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}
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if consensus.consensusTimeout[timeoutBootstrap].IsActive() {
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consensus.consensusTimeout[timeoutBootstrap].Stop()
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consensus.getLogger().Debug().Msg("[OnCommitted] Start consensus timer; stop bootstrap timer only once")
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} else {
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consensus.getLogger().Debug().Msg("[OnCommitted] Start consensus timer")
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}
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consensus.consensusTimeout[timeoutConsensus].Start()
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}
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