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56 lines
1.9 KiB
56 lines
1.9 KiB
package drand
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import (
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protobuf "github.com/golang/protobuf/proto"
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drand_proto "github.com/harmony-one/harmony/api/drand"
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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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// ProcessMessageValidator dispatches messages for the validator to corresponding processors.
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func (dRand *DRand) ProcessMessageValidator(payload []byte) {
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message := drand_proto.Message{}
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err := protobuf.Unmarshal(payload, &message)
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if err != nil {
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utils.GetLogInstance().Error("Failed to unmarshal message payload.", "err", err, "dRand", dRand)
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}
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switch message.Type {
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case drand_proto.MessageType_INIT:
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dRand.processInitMessage(message)
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case drand_proto.MessageType_COMMIT:
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// do nothing on the COMMIT message, as it is intended to send to leader
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default:
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utils.GetLogInstance().Error("Unexpected message type", "msgType", message.Type, "dRand", dRand)
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}
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}
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// ProcessMessageValidator dispatches validator's consensus message.
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func (dRand *DRand) processInitMessage(message drand_proto.Message) {
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if message.Type != drand_proto.MessageType_INIT {
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utils.GetLogInstance().Error("Wrong message type received", "expected", drand_proto.MessageType_INIT, "got", message.Type)
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return
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}
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blockHash := message.BlockHash
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// Verify message signature
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err := verifyMessageSig(dRand.leader.PubKey, message)
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if err != nil {
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utils.GetLogInstance().Warn("[DRG] Failed to verify the message signature", "Error", err)
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return
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}
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utils.GetLogInstance().Debug("[DRG] verify the message signature Succeeded")
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// TODO: check the blockHash is the block hash of last block of last epoch.
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copy(dRand.blockHash[:], blockHash[:])
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rand, proof := dRand.vrf(dRand.blockHash)
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msgToSend := dRand.constructCommitMessage(rand, proof)
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// Send the commit message back to leader
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dRand.host.SendMessageToGroups([]p2p.GroupID{p2p.GroupIDBeacon}, host.ConstructP2pMessage(byte(17), msgToSend))
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}
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