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679 lines
23 KiB
679 lines
23 KiB
package consensus
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import (
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"encoding/binary"
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"encoding/hex"
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"errors"
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"fmt"
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"time"
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"github.com/harmony-one/harmony/crypto/hash"
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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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libp2p_peer "github.com/libp2p/go-libp2p-peer"
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"github.com/rs/zerolog"
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"golang.org/x/crypto/sha3"
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msg_pb "github.com/harmony-one/harmony/api/proto/message"
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consensus_engine "github.com/harmony-one/harmony/consensus/engine"
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"github.com/harmony-one/harmony/core/state"
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"github.com/harmony-one/harmony/core/types"
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bls_cosi "github.com/harmony-one/harmony/crypto/bls"
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"github.com/harmony-one/harmony/internal/ctxerror"
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"github.com/harmony-one/harmony/internal/profiler"
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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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)
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// WaitForNewRandomness listens to the RndChannel to receive new VDF randomness.
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func (consensus *Consensus) WaitForNewRandomness() {
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go func() {
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for {
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vdfOutput := <-consensus.RndChannel
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consensus.pendingRnds = append(consensus.pendingRnds, vdfOutput)
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}
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}()
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}
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// GetNextRnd returns the oldest available randomness along with the hash of the block there randomness preimage is committed.
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func (consensus *Consensus) GetNextRnd() ([vdFAndProofSize]byte, [32]byte, error) {
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if len(consensus.pendingRnds) == 0 {
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return [vdFAndProofSize]byte{}, [32]byte{}, errors.New("No available randomness")
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}
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vdfOutput := consensus.pendingRnds[0]
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vdfBytes := [vdFAndProofSize]byte{}
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seed := [32]byte{}
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copy(vdfBytes[:], vdfOutput[:vdFAndProofSize])
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copy(seed[:], vdfOutput[vdFAndProofSize:])
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//pop the first vdfOutput from the list
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consensus.pendingRnds = consensus.pendingRnds[1:]
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return vdfBytes, seed, nil
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}
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// SealHash returns the hash of a block prior to it being sealed.
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func (consensus *Consensus) SealHash(header *types.Header) (hash common.Hash) {
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hasher := sha3.NewLegacyKeccak256()
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// TODO: update with new fields
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if err := rlp.Encode(hasher, []interface{}{
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header.ParentHash,
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header.Coinbase,
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header.Root,
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header.TxHash,
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header.ReceiptHash,
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header.Bloom,
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header.Number,
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header.GasLimit,
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header.GasUsed,
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header.Time,
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header.Extra,
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}); err != nil {
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utils.Logger().Warn().Err(err).Msg("rlp.Encode failed")
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}
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hasher.Sum(hash[:0])
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return hash
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}
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// Seal is to seal final block.
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func (consensus *Consensus) Seal(chain consensus_engine.ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error {
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// TODO: implement final block sealing
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return nil
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}
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// Author returns the author of the block header.
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func (consensus *Consensus) Author(header *types.Header) (common.Address, error) {
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// TODO: implement this
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return common.Address{}, nil
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}
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// Prepare is to prepare ...
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// TODO(RJ): fix it.
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func (consensus *Consensus) Prepare(chain consensus_engine.ChainReader, header *types.Header) error {
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// TODO: implement prepare method
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return nil
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}
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// Populates the common basic fields for all consensus message.
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func (consensus *Consensus) populateMessageFields(request *msg_pb.ConsensusRequest) {
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request.ViewId = consensus.viewID
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request.BlockNum = consensus.blockNum
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request.ShardId = consensus.ShardID
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// 32 byte block hash
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request.BlockHash = consensus.blockHash[:]
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// sender address
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request.SenderPubkey = consensus.PubKey.Serialize()
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consensus.getLogger().Debug().
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Str("senderKey", consensus.PubKey.SerializeToHexStr()).
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Msg("[populateMessageFields]")
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}
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// Signs the consensus message and returns the marshaled message.
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func (consensus *Consensus) signAndMarshalConsensusMessage(message *msg_pb.Message) ([]byte, error) {
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err := consensus.signConsensusMessage(message)
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if err != nil {
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return []byte{}, err
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}
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marshaledMessage, err := protobuf.Marshal(message)
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if err != nil {
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return []byte{}, err
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}
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return marshaledMessage, nil
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}
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// SetLeaderPubKey deserialize the public key of consensus leader
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func (consensus *Consensus) SetLeaderPubKey(k []byte) error {
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consensus.leader.ConsensusPubKey = &bls.PublicKey{}
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return consensus.leader.ConsensusPubKey.Deserialize(k)
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}
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// GetLeaderPubKey returns the public key of consensus leader
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func (consensus *Consensus) GetLeaderPubKey() *bls.PublicKey {
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return consensus.leader.ConsensusPubKey
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}
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// GetNodeIDs returns Node IDs of all nodes in the same shard
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func (consensus *Consensus) GetNodeIDs() []libp2p_peer.ID {
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nodes := make([]libp2p_peer.ID, 0)
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nodes = append(nodes, consensus.host.GetID())
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consensus.validators.Range(func(k, v interface{}) bool {
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if peer, ok := v.(p2p.Peer); ok {
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nodes = append(nodes, peer.PeerID)
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return true
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}
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return false
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})
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return nodes
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}
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// GetViewID returns the consensus ID
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func (consensus *Consensus) GetViewID() uint64 {
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return consensus.viewID
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}
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// DebugPrintPublicKeys print all the PublicKeys in string format in Consensus
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func (consensus *Consensus) DebugPrintPublicKeys() {
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var keys []string
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for _, k := range consensus.PublicKeys {
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keys = append(keys, hex.EncodeToString(k.Serialize()))
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}
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utils.Logger().Debug().Strs("PublicKeys", keys).Int("count", len(keys)).Msgf("Debug Public Keys")
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}
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// UpdatePublicKeys updates the PublicKeys variable, protected by a mutex
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func (consensus *Consensus) UpdatePublicKeys(pubKeys []*bls.PublicKey) int {
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consensus.pubKeyLock.Lock()
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consensus.PublicKeys = append(pubKeys[:0:0], pubKeys...)
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consensus.CommitteePublicKeys = map[string]bool{}
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utils.Logger().Info().Msg("My Committee updated")
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for i, pubKey := range consensus.PublicKeys {
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utils.Logger().Info().Int("index", i).Str("BlsPubKey", pubKey.SerializeToHexStr()).Msg("Member")
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consensus.CommitteePublicKeys[pubKey.SerializeToHexStr()] = true
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}
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// TODO: use pubkey to identify leader rather than p2p.Peer.
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consensus.leader = p2p.Peer{ConsensusPubKey: pubKeys[0]}
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consensus.LeaderPubKey = pubKeys[0]
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utils.Logger().Info().Str("info", consensus.LeaderPubKey.SerializeToHexStr()).Msg("My Leader")
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consensus.pubKeyLock.Unlock()
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// reset states after update public keys
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consensus.ResetState()
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consensus.ResetViewChangeState()
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return len(consensus.PublicKeys)
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}
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// NewFaker returns a faker consensus.
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func NewFaker() *Consensus {
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return &Consensus{}
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}
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// VerifyHeader checks whether a header conforms to the consensus rules of the bft engine.
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func (consensus *Consensus) VerifyHeader(chain consensus_engine.ChainReader, header *types.Header, seal bool) error {
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parentHeader := chain.GetHeader(header.ParentHash, header.Number.Uint64()-1)
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if parentHeader == nil {
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return consensus_engine.ErrUnknownAncestor
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}
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if seal {
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if err := consensus.VerifySeal(chain, header); err != nil {
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return err
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}
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}
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return nil
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}
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// VerifyHeaders is similar to VerifyHeader, but verifies a batch of headers
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// concurrently. The method returns a quit channel to abort the operations and
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// a results channel to retrieve the async verifications.
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func (consensus *Consensus) VerifyHeaders(chain consensus_engine.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error) {
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abort, results := make(chan struct{}), make(chan error, len(headers))
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for i := 0; i < len(headers); i++ {
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results <- nil
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}
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return abort, results
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}
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// retrievePublicKeysFromLastBlock finds the public keys of last block's committee
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func retrievePublicKeysFromLastBlock(bc consensus_engine.ChainReader, header *types.Header) ([]*bls.PublicKey, error) {
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parentHeader := bc.GetHeaderByHash(header.ParentHash)
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if parentHeader == nil {
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return nil, ctxerror.New("cannot find parent block header in DB",
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"parentHash", header.ParentHash)
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}
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parentShardState, err := bc.ReadShardState(parentHeader.Epoch)
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if err != nil {
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return nil, ctxerror.New("cannot read shard state",
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"epoch", parentHeader.Epoch,
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).WithCause(err)
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}
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parentCommittee := parentShardState.FindCommitteeByID(parentHeader.ShardID)
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if parentCommittee == nil {
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return nil, ctxerror.New("cannot find shard in the shard state",
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"parentBlockNumber", parentHeader.Number,
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"shardID", parentHeader.ShardID,
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)
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}
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var committerKeys []*bls.PublicKey
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for _, member := range parentCommittee.NodeList {
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committerKey := new(bls.PublicKey)
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err := member.BlsPublicKey.ToLibBLSPublicKey(committerKey)
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if err != nil {
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return nil, ctxerror.New("cannot convert BLS public key",
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"blsPublicKey", member.BlsPublicKey).WithCause(err)
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}
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committerKeys = append(committerKeys, committerKey)
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}
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return committerKeys, nil
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}
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// VerifySeal implements consensus.Engine, checking whether the given block satisfies
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// the PoS difficulty requirements, i.e. >= 2f+1 valid signatures from the committee
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func (consensus *Consensus) VerifySeal(chain consensus_engine.ChainReader, header *types.Header) error {
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if chain.CurrentHeader().Number.Uint64() <= uint64(1) {
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return nil
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}
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publicKeys, err := retrievePublicKeysFromLastBlock(chain, header)
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if err != nil {
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return ctxerror.New("[VerifySeal] Cannot retrieve publickeys from last block").WithCause(err)
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}
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payload := append(header.LastCommitSignature[:], header.LastCommitBitmap...)
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aggSig, mask, err := readSignatureBitmapByPublicKeys(payload, publicKeys)
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if err != nil {
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return ctxerror.New("[VerifySeal] Unable to deserialize the LastCommitSignature and LastCommitBitmap in Block Header").WithCause(err)
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}
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if count := utils.CountOneBits(mask.Bitmap); count < consensus.PreviousQuorum() {
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return ctxerror.New("[VerifySeal] Not enough signature in LastCommitSignature from Block Header", "need", consensus.Quorum(), "got", count)
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}
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blockNumHash := make([]byte, 8)
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binary.LittleEndian.PutUint64(blockNumHash, header.Number.Uint64()-1)
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lastCommitPayload := append(blockNumHash, header.ParentHash[:]...)
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if !aggSig.VerifyHash(mask.AggregatePublic, lastCommitPayload) {
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return ctxerror.New("[VerifySeal] Unable to verify aggregated signature from last block", "lastBlockNum", header.Number.Uint64()-1, "lastBlockHash", header.ParentHash)
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}
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return nil
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}
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// Finalize implements consensus.Engine, accumulating the block rewards,
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// setting the final state and assembling the block.
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func (consensus *Consensus) Finalize(chain consensus_engine.ChainReader, header *types.Header, state *state.DB, txs []*types.Transaction, receipts []*types.Receipt, outcxs []*types.CXReceipt, incxs []*types.CXReceiptsProof) (*types.Block, error) {
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// Accumulate any block and uncle rewards and commit the final state root
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// Header seems complete, assemble into a block and return
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if err := accumulateRewards(chain, state, header); err != nil {
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return nil, ctxerror.New("cannot pay block reward").WithCause(err)
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}
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header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number))
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return types.NewBlock(header, txs, receipts, outcxs, incxs), nil
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}
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// Sign on the hash of the message
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func (consensus *Consensus) signMessage(message []byte) []byte {
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hash := hash.Keccak256(message)
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signature := consensus.priKey.SignHash(hash[:])
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return signature.Serialize()
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}
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// Sign on the consensus message signature field.
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func (consensus *Consensus) signConsensusMessage(message *msg_pb.Message) error {
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message.Signature = nil
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// TODO: use custom serialization method rather than protobuf
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marshaledMessage, err := protobuf.Marshal(message)
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if err != nil {
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return err
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}
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// 64 byte of signature on previous data
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signature := consensus.signMessage(marshaledMessage)
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message.Signature = signature
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return nil
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}
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// GetValidatorPeers returns list of validator peers.
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func (consensus *Consensus) GetValidatorPeers() []p2p.Peer {
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validatorPeers := make([]p2p.Peer, 0)
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consensus.validators.Range(func(k, v interface{}) bool {
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if peer, ok := v.(p2p.Peer); ok {
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validatorPeers = append(validatorPeers, peer)
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return true
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}
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return false
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})
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return validatorPeers
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}
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// GetPrepareSigsArray returns the signatures for prepare as a array
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func (consensus *Consensus) GetPrepareSigsArray() []*bls.Sign {
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sigs := []*bls.Sign{}
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for _, sig := range consensus.prepareSigs {
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sigs = append(sigs, sig)
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}
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return sigs
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}
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// GetCommitSigsArray returns the signatures for commit as a array
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func (consensus *Consensus) GetCommitSigsArray() []*bls.Sign {
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sigs := []*bls.Sign{}
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for _, sig := range consensus.commitSigs {
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sigs = append(sigs, sig)
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}
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return sigs
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}
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// GetBhpSigsArray returns the signatures for prepared message in viewchange
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func (consensus *Consensus) GetBhpSigsArray() []*bls.Sign {
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sigs := []*bls.Sign{}
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for _, sig := range consensus.bhpSigs {
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sigs = append(sigs, sig)
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}
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return sigs
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}
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// GetNilSigsArray returns the signatures for nil prepared message in viewchange
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func (consensus *Consensus) GetNilSigsArray() []*bls.Sign {
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sigs := []*bls.Sign{}
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for _, sig := range consensus.nilSigs {
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sigs = append(sigs, sig)
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}
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return sigs
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}
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// GetViewIDSigsArray returns the signatures for viewID in viewchange
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func (consensus *Consensus) GetViewIDSigsArray() []*bls.Sign {
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sigs := []*bls.Sign{}
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for _, sig := range consensus.viewIDSigs {
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sigs = append(sigs, sig)
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}
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return sigs
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}
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// ResetState resets the state of the consensus
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func (consensus *Consensus) ResetState() {
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consensus.getLogger().Debug().
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Str("Phase", consensus.phase.String()).
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Msg("[ResetState] Resetting consensus state")
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consensus.switchPhase(Announce, true)
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consensus.blockHash = [32]byte{}
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consensus.blockHeader = []byte{}
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consensus.block = []byte{}
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consensus.prepareSigs = map[string]*bls.Sign{}
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consensus.commitSigs = map[string]*bls.Sign{}
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prepareBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, nil)
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commitBitmap, _ := bls_cosi.NewMask(consensus.PublicKeys, nil)
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consensus.prepareBitmap = prepareBitmap
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consensus.commitBitmap = commitBitmap
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consensus.aggregatedPrepareSig = nil
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consensus.aggregatedCommitSig = nil
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}
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// Returns a string representation of this consensus
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func (consensus *Consensus) String() string {
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var duty string
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if consensus.IsLeader() {
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duty = "LDR" // leader
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} else {
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duty = "VLD" // validator
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}
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return fmt.Sprintf("[duty:%s, PubKey:%s, ShardIDs:%v]",
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duty, consensus.PubKey.SerializeToHexStr(), consensus.ShardID)
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}
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// ToggleConsensusCheck flip the flag of whether ignore viewID check during consensus process
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func (consensus *Consensus) ToggleConsensusCheck() {
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consensus.mutex.Lock()
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defer consensus.mutex.Unlock()
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consensus.ignoreViewIDCheck = !consensus.ignoreViewIDCheck
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}
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// IsValidatorInCommittee returns whether the given validator BLS address is part of my committee
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func (consensus *Consensus) IsValidatorInCommittee(pubKey *bls.PublicKey) bool {
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_, ok := consensus.CommitteePublicKeys[pubKey.SerializeToHexStr()]
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return ok
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}
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// Verify the signature of the message are valid from the signer's public key.
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func verifyMessageSig(signerPubKey *bls.PublicKey, message *msg_pb.Message) error {
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signature := message.Signature
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message.Signature = nil
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messageBytes, err := protobuf.Marshal(message)
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if err != nil {
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return err
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}
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msgSig := bls.Sign{}
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err = msgSig.Deserialize(signature)
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if err != nil {
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return err
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}
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msgHash := hash.Keccak256(messageBytes)
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if !msgSig.VerifyHash(signerPubKey, msgHash[:]) {
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return errors.New("failed to verify the signature")
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}
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message.Signature = signature
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return nil
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}
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// verifySenderKey verifys the message senderKey is properly signed and senderAddr is valid
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func (consensus *Consensus) verifySenderKey(msg *msg_pb.Message) (*bls.PublicKey, error) {
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consensusMsg := msg.GetConsensus()
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senderKey, err := bls_cosi.BytesToBlsPublicKey(consensusMsg.SenderPubkey)
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if err != nil {
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return nil, err
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}
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if !consensus.IsValidatorInCommittee(senderKey) {
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return nil, fmt.Errorf("Validator %s is not in committee", senderKey.SerializeToHexStr())
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}
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return senderKey, nil
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}
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func (consensus *Consensus) verifyViewChangeSenderKey(msg *msg_pb.Message) (*bls.PublicKey, error) {
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vcMsg := msg.GetViewchange()
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senderKey, err := bls_cosi.BytesToBlsPublicKey(vcMsg.SenderPubkey)
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if err != nil {
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return nil, err
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}
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if !consensus.IsValidatorInCommittee(senderKey) {
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return nil, fmt.Errorf("Validator %s is not in committee", senderKey.SerializeToHexStr())
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}
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return senderKey, nil
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}
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// SetViewID set the viewID to the height of the blockchain
|
|
func (consensus *Consensus) SetViewID(height uint64) {
|
|
consensus.viewID = height
|
|
}
|
|
|
|
// SetMode sets the mode of consensus
|
|
func (consensus *Consensus) SetMode(mode Mode) {
|
|
consensus.mode.SetMode(mode)
|
|
}
|
|
|
|
// Mode returns the mode of consensus
|
|
func (consensus *Consensus) Mode() Mode {
|
|
return consensus.mode.Mode()
|
|
}
|
|
|
|
// RegisterPRndChannel registers the channel for receiving randomness preimage from DRG protocol
|
|
func (consensus *Consensus) RegisterPRndChannel(pRndChannel chan []byte) {
|
|
consensus.PRndChannel = pRndChannel
|
|
}
|
|
|
|
// RegisterRndChannel registers the channel for receiving final randomness from DRG protocol
|
|
func (consensus *Consensus) RegisterRndChannel(rndChannel chan [548]byte) {
|
|
consensus.RndChannel = rndChannel
|
|
}
|
|
|
|
// Check viewID, caller's responsibility to hold lock when change ignoreViewIDCheck
|
|
func (consensus *Consensus) checkViewID(msg *PbftMessage) error {
|
|
// just ignore consensus check for the first time when node join
|
|
if consensus.ignoreViewIDCheck {
|
|
//in syncing mode, node accepts incoming messages without viewID/leaderKey checking
|
|
//so only set mode to normal when new node enters consensus and need checking viewID
|
|
consensus.mode.SetMode(Normal)
|
|
consensus.viewID = msg.ViewID
|
|
consensus.mode.SetViewID(msg.ViewID)
|
|
consensus.LeaderPubKey = msg.SenderPubkey
|
|
consensus.ignoreViewIDCheck = false
|
|
consensus.consensusTimeout[timeoutConsensus].Start()
|
|
utils.Logger().Debug().
|
|
Uint64("viewID", consensus.viewID).
|
|
Str("leaderKey", consensus.LeaderPubKey.SerializeToHexStr()[:20]).
|
|
Msg("viewID and leaderKey override")
|
|
utils.Logger().Debug().
|
|
Uint64("viewID", consensus.viewID).
|
|
Uint64("block", consensus.blockNum).
|
|
Msg("Start consensus timer")
|
|
return nil
|
|
} else if msg.ViewID > consensus.viewID {
|
|
return consensus_engine.ErrViewIDNotMatch
|
|
} else if msg.ViewID < consensus.viewID {
|
|
return errors.New("view ID belongs to the past")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// SetBlockNum sets the blockNum in consensus object, called at node bootstrap
|
|
func (consensus *Consensus) SetBlockNum(blockNum uint64) {
|
|
consensus.mutex.Lock()
|
|
defer consensus.mutex.Unlock()
|
|
consensus.blockNum = blockNum
|
|
}
|
|
|
|
// ReadSignatureBitmapPayload read the payload for signature and bitmap; offset is the beginning position of reading
|
|
func (consensus *Consensus) ReadSignatureBitmapPayload(recvPayload []byte, offset int) (*bls.Sign, *bls_cosi.Mask, error) {
|
|
if offset+96 > len(recvPayload) {
|
|
return nil, nil, errors.New("payload not have enough length")
|
|
}
|
|
sigAndBitmapPayload := recvPayload[offset:]
|
|
return readSignatureBitmapByPublicKeys(sigAndBitmapPayload, consensus.PublicKeys)
|
|
}
|
|
|
|
// readSignatureBitmapByPublicKeys read the payload of signature and bitmap based on public keys
|
|
func readSignatureBitmapByPublicKeys(recvPayload []byte, publicKeys []*bls.PublicKey) (*bls.Sign, *bls_cosi.Mask, error) {
|
|
if len(recvPayload) < 96 {
|
|
return nil, nil, errors.New("payload not have enough length")
|
|
}
|
|
payload := append(recvPayload[:0:0], recvPayload...)
|
|
//#### Read payload data
|
|
// 96 byte of multi-sig
|
|
offset := 0
|
|
multiSig := payload[offset : offset+96]
|
|
offset += 96
|
|
// bitmap
|
|
bitmap := payload[offset:]
|
|
//#### END Read payload data
|
|
|
|
aggSig := bls.Sign{}
|
|
err := aggSig.Deserialize(multiSig)
|
|
if err != nil {
|
|
return nil, nil, errors.New("unable to deserialize multi-signature from payload")
|
|
}
|
|
mask, err := bls_cosi.NewMask(publicKeys, nil)
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("onNewView unable to setup mask for prepared message")
|
|
return nil, nil, errors.New("unable to setup mask from payload")
|
|
}
|
|
if err := mask.SetMask(bitmap); err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("mask.SetMask failed")
|
|
}
|
|
return &aggSig, mask, nil
|
|
}
|
|
|
|
func (consensus *Consensus) reportMetrics(block types.Block) {
|
|
endTime := time.Now()
|
|
timeElapsed := endTime.Sub(startTime)
|
|
numOfTxs := len(block.Transactions())
|
|
tps := float64(numOfTxs) / timeElapsed.Seconds()
|
|
utils.Logger().Info().
|
|
Int("numOfTXs", numOfTxs).
|
|
Time("startTime", startTime).
|
|
Time("endTime", endTime).
|
|
Dur("timeElapsed", endTime.Sub(startTime)).
|
|
Float64("TPS", tps).
|
|
Interface("consensus", consensus).
|
|
Msg("TPS Report")
|
|
|
|
// Post metrics
|
|
profiler := profiler.GetProfiler()
|
|
if profiler.MetricsReportURL == "" {
|
|
return
|
|
}
|
|
|
|
txHashes := []string{}
|
|
for i, end := 0, len(block.Transactions()); i < 3 && i < end; i++ {
|
|
txHash := block.Transactions()[end-1-i].Hash()
|
|
txHashes = append(txHashes, hex.EncodeToString(txHash[:]))
|
|
}
|
|
metrics := map[string]interface{}{
|
|
"key": hex.EncodeToString(consensus.PubKey.Serialize()),
|
|
"tps": tps,
|
|
"txCount": numOfTxs,
|
|
"nodeCount": len(consensus.PublicKeys) + 1,
|
|
"latestBlockHash": hex.EncodeToString(consensus.blockHash[:]),
|
|
"latestTxHashes": txHashes,
|
|
"blockLatency": int(timeElapsed / time.Millisecond),
|
|
}
|
|
profiler.LogMetrics(metrics)
|
|
}
|
|
|
|
// getLogger returns logger for consensus contexts added
|
|
func (consensus *Consensus) getLogger() *zerolog.Logger {
|
|
logger := utils.Logger().With().
|
|
Uint64("myBlock", consensus.blockNum).
|
|
Uint64("myViewID", consensus.viewID).
|
|
Interface("phase", consensus.phase).
|
|
Str("mode", consensus.mode.Mode().String()).
|
|
Logger()
|
|
return &logger
|
|
}
|
|
|
|
// retrieve corresponding blsPublicKey from Coinbase Address
|
|
func (consensus *Consensus) getLeaderPubKeyFromCoinbase(header *types.Header) (*bls.PublicKey, error) {
|
|
shardState, err := consensus.ChainReader.ReadShardState(header.Epoch)
|
|
if err != nil {
|
|
return nil, ctxerror.New("cannot read shard state",
|
|
"epoch", header.Epoch,
|
|
"coinbaseAddr", header.Coinbase,
|
|
).WithCause(err)
|
|
}
|
|
|
|
committee := shardState.FindCommitteeByID(header.ShardID)
|
|
if committee == nil {
|
|
return nil, ctxerror.New("cannot find shard in the shard state",
|
|
"blockNum", header.Number,
|
|
"shardID", header.ShardID,
|
|
"coinbaseAddr", header.Coinbase,
|
|
)
|
|
}
|
|
committerKey := new(bls.PublicKey)
|
|
for _, member := range committee.NodeList {
|
|
if member.EcdsaAddress == header.Coinbase {
|
|
err := member.BlsPublicKey.ToLibBLSPublicKey(committerKey)
|
|
if err != nil {
|
|
return nil, ctxerror.New("cannot convert BLS public key",
|
|
"blsPublicKey", member.BlsPublicKey,
|
|
"coinbaseAddr", header.Coinbase).WithCause(err)
|
|
}
|
|
return committerKey, nil
|
|
}
|
|
}
|
|
return nil, ctxerror.New("cannot find corresponding BLS Public Key", "coinbaseAddr", header.Coinbase)
|
|
}
|
|
|
|
// update consensus information before join consensus after state syncing
|
|
func (consensus *Consensus) updateConsensusInformation() {
|
|
header := consensus.ChainReader.CurrentHeader()
|
|
consensus.SetBlockNum(header.Number.Uint64() + 1)
|
|
consensus.SetViewID(header.ViewID.Uint64() + 1)
|
|
leaderPubKey, err := consensus.getLeaderPubKeyFromCoinbase(header)
|
|
if err != nil || leaderPubKey == nil {
|
|
consensus.getLogger().Debug().Err(err).Msg("[SYNC] Unable to get leaderPubKey from coinbase")
|
|
consensus.ignoreViewIDCheck = true
|
|
} else {
|
|
consensus.getLogger().Debug().
|
|
Str("leaderPubKey", leaderPubKey.SerializeToHexStr()).
|
|
Msg("[SYNC] Most Recent LeaderPubKey Updated Based on BlockChain")
|
|
consensus.LeaderPubKey = leaderPubKey
|
|
consensus.mode.SetMode(Normal)
|
|
}
|
|
}
|
|
|
|
// IsLeader check if the node is a leader or not by comparing the public key of
|
|
// the node with the leader public key
|
|
func (consensus *Consensus) IsLeader() bool {
|
|
if consensus.PubKey != nil && consensus.LeaderPubKey != nil {
|
|
return consensus.PubKey.IsEqual(consensus.LeaderPubKey)
|
|
}
|
|
return false
|
|
}
|
|
|