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109 lines
3.7 KiB
109 lines
3.7 KiB
package consensus
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import (
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"encoding/binary"
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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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bls_cosi "github.com/harmony-one/harmony/crypto/bls"
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"github.com/harmony-one/harmony/internal/utils"
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)
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// construct the view change message
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func (consensus *Consensus) constructViewChangeMessage() []byte {
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message := &msg_pb.Message{
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ServiceType: msg_pb.ServiceType_CONSENSUS,
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Type: msg_pb.MessageType_VIEWCHANGE,
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Request: &msg_pb.Message_Viewchange{
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Viewchange: &msg_pb.ViewChangeRequest{},
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},
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}
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vcMsg := message.GetViewchange()
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vcMsg.ViewId = consensus.mode.GetViewID()
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vcMsg.BlockNum = consensus.blockNum
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vcMsg.ShardId = consensus.ShardID
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// sender address
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vcMsg.SenderPubkey = consensus.PubKey.Serialize()
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// next leader key already updated
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vcMsg.LeaderPubkey = consensus.LeaderPubKey.Serialize()
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preparedMsgs := consensus.pbftLog.GetMessagesByTypeSeqHash(msg_pb.MessageType_PREPARED, consensus.blockNum, consensus.blockHash)
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preparedMsg := consensus.pbftLog.FindMessageByMaxViewID(preparedMsgs)
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var msgToSign []byte
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if preparedMsg == nil {
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msgToSign = NIL // m2 type message
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vcMsg.Payload = []byte{}
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} else {
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// m1 type message
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msgToSign = append(preparedMsg.BlockHash[:], preparedMsg.Payload...)
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vcMsg.Payload = append(msgToSign[:0:0], msgToSign...)
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}
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consensus.getLogger().Debug("[constructViewChangeMessage]", "m1Payload", vcMsg.Payload, "pubKey", consensus.PubKey.SerializeToHexStr())
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sign := consensus.priKey.SignHash(msgToSign)
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if sign != nil {
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vcMsg.ViewchangeSig = sign.Serialize()
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} else {
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utils.GetLogger().Error("unable to serialize m1/m2 view change message signature")
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}
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viewIDBytes := make([]byte, 4)
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binary.LittleEndian.PutUint32(viewIDBytes, consensus.mode.ViewID())
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sign1 := consensus.priKey.SignHash(viewIDBytes)
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if sign1 != nil {
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vcMsg.ViewidSig = sign1.Serialize()
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} else {
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utils.GetLogger().Error("unable to serialize viewID signature")
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}
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marshaledMessage, err := consensus.signAndMarshalConsensusMessage(message)
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if err != nil {
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utils.GetLogInstance().Error("[constructViewChangeMessage] failed to sign and marshal the viewchange message", "error", err)
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}
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return proto.ConstructConsensusMessage(marshaledMessage)
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}
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// new leader construct newview message
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func (consensus *Consensus) constructNewViewMessage() []byte {
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message := &msg_pb.Message{
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ServiceType: msg_pb.ServiceType_CONSENSUS,
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Type: msg_pb.MessageType_NEWVIEW,
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Request: &msg_pb.Message_Viewchange{
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Viewchange: &msg_pb.ViewChangeRequest{},
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},
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}
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vcMsg := message.GetViewchange()
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vcMsg.ViewId = consensus.mode.ViewID()
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vcMsg.BlockNum = consensus.blockNum
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vcMsg.ShardId = consensus.ShardID
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// sender address
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vcMsg.SenderPubkey = consensus.PubKey.Serialize()
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vcMsg.Payload = consensus.m1Payload
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sig2arr := consensus.GetNilSigsArray()
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consensus.getLogger().Debug("[constructNewViewMessage] M2 (NIL) type signatures", "len", len(sig2arr))
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if len(sig2arr) > 0 {
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m2Sig := bls_cosi.AggregateSig(sig2arr)
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vcMsg.M2Aggsigs = m2Sig.Serialize()
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vcMsg.M2Bitmap = consensus.nilBitmap.Bitmap
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}
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sig3arr := consensus.GetViewIDSigsArray()
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consensus.getLogger().Debug("[constructNewViewMessage] M3 (ViewID) type signatures", "len", len(sig3arr))
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// even we check here for safty, m3 type signatures must >= 2f+1
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if len(sig3arr) > 0 {
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m3Sig := bls_cosi.AggregateSig(sig3arr)
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vcMsg.M3Aggsigs = m3Sig.Serialize()
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vcMsg.M3Bitmap = consensus.viewIDBitmap.Bitmap
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}
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marshaledMessage, err := consensus.signAndMarshalConsensusMessage(message)
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if err != nil {
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utils.GetLogInstance().Error("[constructNewViewMessage] failed to sign and marshal the new view message", "error", err)
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}
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return proto.ConstructConsensusMessage(marshaledMessage)
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}
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