ceremonyclient/node/consensus/master/broadcast_messaging.go

229 lines
5.2 KiB
Go

package master
import (
"bytes"
"strings"
"time"
"github.com/iden3/go-iden3-crypto/poseidon"
"github.com/pkg/errors"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"source.quilibrium.com/quilibrium/monorepo/go-libp2p-blossomsub/pb"
"source.quilibrium.com/quilibrium/monorepo/node/consensus"
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
)
func (e *MasterClockConsensusEngine) handleMessage(message *pb.Message) error {
e.logger.Debug(
"received message",
zap.Binary("data", message.Data),
zap.Binary("from", message.From),
zap.Binary("signature", message.Signature),
)
msg := &protobufs.Message{}
if err := proto.Unmarshal(message.Data, msg); err != nil {
return errors.Wrap(err, "handle message")
}
any := &anypb.Any{}
if err := proto.Unmarshal(msg.Payload, any); err != nil {
return errors.Wrap(err, "handle message")
}
eg := errgroup.Group{}
eg.SetLimit(len(e.executionEngines))
for name := range e.executionEngines {
name := name
eg.Go(func() error {
messages, err := e.executionEngines[name].ProcessMessage(
msg.Address,
msg,
)
if err != nil {
e.logger.Error(
"could not process message for engine",
zap.Error(err),
zap.String("engine_name", name),
)
return errors.Wrap(err, "handle message")
}
for _, m := range messages {
m := m
if err := e.publishMessage(m.Address, m); err != nil {
e.logger.Error(
"could not publish message for engine",
zap.Error(err),
zap.String("engine_name", name),
)
return errors.Wrap(err, "handle message")
}
}
return nil
})
}
if err := eg.Wait(); err != nil {
e.logger.Error("rejecting invalid message", zap.Error(err))
return errors.Wrap(err, "execution failed")
}
switch any.TypeUrl {
case protobufs.ClockFrameType:
if err := e.handleClockFrameData(
message.From,
any,
); err != nil {
return errors.Wrap(err, "handle message")
}
}
return nil
}
func (e *MasterClockConsensusEngine) handleClockFrameData(
peerID []byte,
any *anypb.Any,
) error {
frame := &protobufs.ClockFrame{}
if err := any.UnmarshalTo(frame); err != nil {
return errors.Wrap(err, "handle clock frame data")
}
if e.frame > frame.FrameNumber {
e.logger.Debug(
"received anachronistic frame",
zap.Binary("sender", peerID),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
zap.Int("proof_count", len(frame.AggregateProofs)),
)
return nil
}
if e.difficulty != frame.Difficulty {
e.logger.Debug(
"frame difficulty mismatched",
zap.Uint32("difficulty", frame.Difficulty),
)
return errors.Wrap(
errors.New("frame difficulty"),
"handle clock frame data",
)
}
e.logger.Debug(
"got clock frame",
zap.Binary("sender", peerID),
zap.Binary("filter", frame.Filter),
zap.Uint64("frame_number", frame.FrameNumber),
zap.Int("proof_count", len(frame.AggregateProofs)),
)
if err := frame.VerifyMasterClockFrame(); err != nil {
e.logger.Error("could not verify clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame data")
}
if e.frame < frame.FrameNumber {
if err := e.enqueueSeenFrame(frame); err != nil {
e.logger.Error("could not enqueue seen clock frame", zap.Error(err))
return errors.Wrap(err, "handle clock frame data")
}
}
return nil
}
func (e *MasterClockConsensusEngine) enqueueSeenFrame(
frame *protobufs.ClockFrame,
) error {
e.seenFramesMx.Lock()
found := false
for _, f := range e.seenFrames {
if f.FrameNumber == frame.FrameNumber &&
bytes.Equal(f.Input, frame.Input) &&
f.Difficulty == frame.Difficulty &&
bytes.Equal(f.Output, frame.Output) {
found = true
}
}
if !found {
e.logger.Debug(
"enqueuing frame for consensus",
zap.Uint64("frame_number", frame.FrameNumber),
)
e.seenFrames = append(e.seenFrames, frame)
e.lastFrameReceivedAt = time.Now().UTC()
}
e.seenFramesMx.Unlock()
return nil
}
func (e *MasterClockConsensusEngine) publishProof(
frame *protobufs.ClockFrame,
) error {
if e.state == consensus.EngineStatePublishing {
e.logger.Debug(
"publishing frame",
zap.Uint64("frame_number", frame.FrameNumber),
)
e.enqueueSeenFrame(frame)
if err := e.publishMessage(e.filter, frame); err != nil {
return errors.Wrap(
err,
"publish proof",
)
}
e.state = consensus.EngineStateCollecting
}
return nil
}
func (e *MasterClockConsensusEngine) publishMessage(
filter []byte,
message proto.Message,
) error {
any := &anypb.Any{}
if err := any.MarshalFrom(message); err != nil {
return errors.Wrap(err, "publish message")
}
// annoying protobuf any hack
any.TypeUrl = strings.Replace(
any.TypeUrl,
"type.googleapis.com",
"types.quilibrium.com",
1,
)
payload, err := proto.Marshal(any)
if err != nil {
return errors.Wrap(err, "publish message")
}
h, err := poseidon.HashBytes(payload)
if err != nil {
return errors.Wrap(err, "publish message")
}
msg := &protobufs.Message{
Hash: h.Bytes(),
Address: e.filter,
Payload: payload,
}
data, err := proto.Marshal(msg)
if err != nil {
return errors.Wrap(err, "publish message")
}
return e.pubSub.PublishToBitmask(filter, data)
}