package master import ( "bytes" "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/protobufs" ) func (e *MasterClockConsensusEngine) handleSync(message *pb.Message) error { e.logger.Debug( "received peer 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 sync") } any := &anypb.Any{} if err := proto.Unmarshal(msg.Payload, any); err != nil { return errors.Wrap(err, "handle sync") } eg := errgroup.Group{} eg.SetLimit(len(e.executionEngines)) for name := range e.executionEngines { name := name eg.Go(func() error { applications := e.executionEngines[name].GetSupportedApplications() for _, application := range applications { if bytes.Equal(msg.Address, application.Address) { 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 { if err := e.publishMessage(e.filter, 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, "handle sync") } switch any.TypeUrl { case protobufs.ClockFramesResponseType: if err := e.handleClockFramesResponse( message.From, any, ); err != nil { return errors.Wrap(err, "handle sync") } case protobufs.ClockFramesRequestType: if err := e.handleClockFramesRequest( message.From, any, ); err != nil { return errors.Wrap(err, "handle sync") } } return nil } func (e *MasterClockConsensusEngine) createPeerReceiveChannel( peerID []byte, ) []byte { return append(append([]byte{}, peerID...), e.pubSub.GetPeerID()...) } func (e *MasterClockConsensusEngine) createPeerSendChannel( peerID []byte, ) []byte { return append(append([]byte{}, e.pubSub.GetPeerID()...), peerID...) } func (e *MasterClockConsensusEngine) handleClockFramesResponse( peerID []byte, any *anypb.Any, ) error { if bytes.Equal(peerID, e.pubSub.GetPeerID()) { return nil } if !bytes.Equal(peerID, e.syncingTarget) { e.logger.Warn( "received clock frames response from unexpected target", zap.Binary("peer_id", peerID), zap.Binary("expected_peer_id", e.syncingTarget), ) return nil } e.syncingStatus = SyncStatusSynchronizing defer func() { e.syncingStatus = SyncStatusNotSyncing }() response := &protobufs.ClockFramesResponse{} if err := any.UnmarshalTo(response); err != nil { return errors.Wrap(err, "handle clock frames response") } for _, frame := range response.ClockFrames { e.logger.Info( "processing clock frame", zap.Binary("sender", peerID), zap.Binary("filter", frame.Filter), zap.Uint64("frame_number", frame.FrameNumber), ) if err := frame.VerifyMasterClockFrame(); err != nil { e.logger.Error("could not verify clock frame", zap.Error(err)) return errors.Wrap(err, "handle clock frame response") } e.logger.Info( "clock frame was valid", zap.Binary("sender", peerID), zap.Binary("filter", frame.Filter), zap.Uint64("frame_number", frame.FrameNumber), ) 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 response") } } } return nil } func (e *MasterClockConsensusEngine) handleClockFramesRequest( peerID []byte, any *anypb.Any, ) error { if bytes.Equal(peerID, e.pubSub.GetPeerID()) { return nil } request := &protobufs.ClockFramesRequest{} if err := any.UnmarshalTo(request); err != nil { return errors.Wrap(err, "handle clock frame request") } channel := e.createPeerSendChannel(peerID) e.pubSub.Subscribe(channel, e.handleSync, true) e.logger.Info( "received clock frame request", zap.Binary("peer_id", peerID), zap.Uint64("from_frame_number", request.FromFrameNumber), zap.Uint64("to_frame_number", request.ToFrameNumber), ) from := request.FromFrameNumber if e.frame < from || len(e.historicFrames) == 0 { e.logger.Info( "peer asked for undiscovered frame", zap.Binary("peer_id", peerID), zap.Uint64("frame_number", request.FromFrameNumber), ) if err := e.publishMessage(channel, &protobufs.ClockFramesResponse{ Filter: request.Filter, FromFrameNumber: 0, ToFrameNumber: 0, ClockFrames: []*protobufs.ClockFrame{}, }); err != nil { return errors.Wrap(err, "handle clock frame request") } return nil } to := request.ToFrameNumber if to == 0 || to-request.FromFrameNumber > 128 { to = request.FromFrameNumber + 127 } if int(to) > len(e.historicFrames)-1 { to = uint64(len(e.historicFrames) - 1) } e.logger.Info( "sending response", zap.Binary("peer_id", peerID), zap.Uint64("from", from), zap.Uint64("to", to), zap.Uint64("total_frames", uint64(to-from+1)), ) if err := e.publishMessage(channel, &protobufs.ClockFramesResponse{ Filter: request.Filter, FromFrameNumber: request.FromFrameNumber, ToFrameNumber: to, ClockFrames: e.historicFrames[from:to], }); err != nil { return errors.Wrap(err, "handle clock frame request") } return nil }