You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.6 KiB
53 lines
1.6 KiB
6 years ago
|
package drand
|
||
|
|
|
||
|
|
import (
|
||
|
|
protobuf "github.com/golang/protobuf/proto"
|
||
|
|
drand_proto "github.com/harmony-one/harmony/api/drand"
|
||
|
|
"github.com/harmony-one/harmony/internal/utils"
|
||
|
|
"github.com/harmony-one/harmony/p2p/host"
|
||
|
|
)
|
||
|
|
|
||
|
|
// ProcessMessageValidator dispatches messages for the validator to corresponding processors.
|
||
|
|
func (dRand *DRand) ProcessMessageValidator(payload []byte) {
|
||
|
|
message := drand_proto.Message{}
|
||
|
|
err := protobuf.Unmarshal(payload, &message)
|
||
|
|
|
||
|
|
if err != nil {
|
||
|
|
utils.GetLogInstance().Error("Failed to unmarshal message payload.", "err", err, "dRand", dRand)
|
||
|
|
}
|
||
|
|
|
||
|
|
switch message.Type {
|
||
|
|
case drand_proto.MessageType_COMMIT:
|
||
|
|
dRand.processInitMessage(message)
|
||
|
|
default:
|
||
|
|
utils.GetLogInstance().Error("Unexpected message type", "msgType", message.Type, "dRand", dRand)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// ProcessMessageValidator dispatches validator's consensus message.
|
||
|
|
func (dRand *DRand) processInitMessage(message drand_proto.Message) {
|
||
|
|
if message.Type != drand_proto.MessageType_INIT {
|
||
|
|
utils.GetLogInstance().Error("Wrong message type received", "expected", drand_proto.MessageType_INIT, "got", message.Type)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
blockHash := message.BlockHash
|
||
|
|
|
||
|
|
// Verify message signature
|
||
|
|
err := verifyMessageSig(dRand.leader.PubKey, message)
|
||
|
|
if err != nil {
|
||
|
|
utils.GetLogInstance().Warn("Failed to verify the message signature", "Error", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: check the blockHash is the block hash of last block of last epoch.
|
||
|
|
copy(dRand.blockHash[:], blockHash[:])
|
||
|
|
|
||
|
|
rand, proof := dRand.vrf(dRand.blockHash)
|
||
|
|
|
||
|
|
msgToSend := dRand.constructCommitMessage(rand, proof)
|
||
|
|
|
||
|
|
// Send the commit message back to leader
|
||
|
|
host.SendMessage(dRand.host, dRand.leader, msgToSend, nil)
|
||
|
|
}
|