ceremonyclient/node/consensus/ceremony/consensus_frames.go

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package ceremony
import (
"bytes"
"context"
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"time"
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"source.quilibrium.com/quilibrium/monorepo/node/config"
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"github.com/pkg/errors"
"go.uber.org/zap"
"google.golang.org/grpc"
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"google.golang.org/protobuf/proto"
"source.quilibrium.com/quilibrium/monorepo/node/consensus"
qcrypto "source.quilibrium.com/quilibrium/monorepo/node/crypto"
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"source.quilibrium.com/quilibrium/monorepo/node/execution/intrinsics/ceremony/application"
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"source.quilibrium.com/quilibrium/monorepo/node/p2p"
"source.quilibrium.com/quilibrium/monorepo/node/protobufs"
)
func (e *CeremonyDataClockConsensusEngine) prove(
previousFrame *protobufs.ClockFrame,
) (*protobufs.ClockFrame, error) {
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if !e.frameProverTrie.Contains(e.provingKeyAddress) {
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e.stagedLobbyStateTransitionsMx.Lock()
e.stagedLobbyStateTransitions = &protobufs.CeremonyLobbyStateTransition{}
e.stagedLobbyStateTransitionsMx.Unlock()
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e.state = consensus.EngineStateCollecting
return previousFrame, nil
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}
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e.stagedLobbyStateTransitionsMx.Lock()
executionOutput := &protobufs.IntrinsicExecutionOutput{}
app, err := application.MaterializeApplicationFromFrame(previousFrame)
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if err != nil {
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e.stagedLobbyStateTransitions = &protobufs.CeremonyLobbyStateTransition{}
e.stagedLobbyStateTransitionsMx.Unlock()
return nil, errors.Wrap(err, "prove")
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}
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if e.stagedLobbyStateTransitions == nil {
e.stagedLobbyStateTransitions = &protobufs.CeremonyLobbyStateTransition{}
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}
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e.logger.Info(
"proving new frame",
zap.Int("state_transitions", len(e.stagedLobbyStateTransitions.TypeUrls)),
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)
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var validLobbyTransitions *protobufs.CeremonyLobbyStateTransition
var skippedTransition *protobufs.CeremonyLobbyStateTransition
app, validLobbyTransitions, skippedTransition, err = app.ApplyTransition(
previousFrame.FrameNumber,
e.stagedLobbyStateTransitions,
true,
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)
if err != nil {
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e.stagedLobbyStateTransitions = &protobufs.CeremonyLobbyStateTransition{}
e.stagedLobbyStateTransitionsMx.Unlock()
return nil, errors.Wrap(err, "prove")
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}
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e.stagedLobbyStateTransitions = skippedTransition
defer e.stagedLobbyStateTransitionsMx.Unlock()
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lobbyState, err := app.MaterializeLobbyStateFromApplication()
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if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
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executionOutput.Address = application.CEREMONY_ADDRESS
executionOutput.Output, err = proto.Marshal(lobbyState)
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if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
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executionOutput.Proof, err = proto.Marshal(validLobbyTransitions)
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if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
data, err := proto.Marshal(executionOutput)
if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
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e.logger.Debug("encoded execution output")
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commitment, err := e.inclusionProver.Commit(
data,
protobufs.IntrinsicExecutionOutputType,
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)
if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
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e.logger.Debug("creating kzg proof")
proof, err := e.inclusionProver.ProveAggregate(
[]*qcrypto.InclusionCommitment{commitment},
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)
if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
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e.logger.Debug("finalizing execution proof")
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frame, err := e.frameProver.ProveDataClockFrame(
previousFrame,
[][]byte{proof.AggregateCommitment},
[]*protobufs.InclusionAggregateProof{
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{
Filter: e.filter,
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FrameNumber: previousFrame.FrameNumber + 1,
InclusionCommitments: []*protobufs.InclusionCommitment{
{
Filter: e.filter,
FrameNumber: previousFrame.FrameNumber + 1,
TypeUrl: proof.InclusionCommitments[0].TypeUrl,
Commitment: proof.InclusionCommitments[0].Commitment,
Data: data,
Position: 0,
},
},
Proof: proof.Proof,
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},
},
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e.provingKey,
time.Now().UnixMilli(),
e.difficulty,
)
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if err != nil {
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return nil, errors.Wrap(err, "prove")
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}
e.logger.Info(
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"returning new proven frame",
zap.Uint64("frame_number", frame.FrameNumber),
zap.Int("proof_count", len(frame.AggregateProofs)),
zap.Int("commitment_count", len(frame.Input[516:])/74),
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)
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return frame, nil
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}
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func (e *CeremonyDataClockConsensusEngine) GetMostAheadPeer(
frameNumber uint64,
) (
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[]byte,
uint64,
error,
) {
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e.logger.Info(
"checking peer list",
zap.Int("peers", len(e.peerMap)),
zap.Int("uncooperative_peers", len(e.uncooperativePeersMap)),
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zap.Uint64("current_head_frame", frameNumber),
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)
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max := frameNumber
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var peer []byte = nil
e.peerMapMx.RLock()
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for _, v := range e.peerMap {
e.logger.Debug(
"checking peer info",
zap.Binary("peer_id", v.peerId),
zap.Uint64("max_frame_number", v.maxFrame),
zap.Int64("timestamp", v.timestamp),
zap.Binary("version", v.version),
)
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_, ok := e.uncooperativePeersMap[string(v.peerId)]
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if v.maxFrame > max &&
v.timestamp > config.GetMinimumVersionCutoff().UnixMilli() &&
bytes.Compare(v.version, config.GetMinimumVersion()) >= 0 && !ok {
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peer = v.peerId
max = v.maxFrame
}
}
e.peerMapMx.RUnlock()
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if peer == nil {
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return nil, 0, p2p.ErrNoPeersAvailable
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}
return peer, max, nil
}
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func (e *CeremonyDataClockConsensusEngine) sync(
currentLatest *protobufs.ClockFrame,
maxFrame uint64,
peerId []byte,
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) (*protobufs.ClockFrame, error) {
latest := currentLatest
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e.logger.Info("polling peer for new frames", zap.Binary("peer_id", peerId))
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cc, err := e.pubSub.GetDirectChannel(peerId, "")
if err != nil {
e.logger.Debug(
"could not establish direct channel",
zap.Error(err),
)
e.peerMapMx.Lock()
if _, ok := e.peerMap[string(peerId)]; ok {
e.uncooperativePeersMap[string(peerId)] = e.peerMap[string(peerId)]
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e.uncooperativePeersMap[string(peerId)].timestamp = time.Now().UnixMilli()
delete(e.peerMap, string(peerId))
}
e.peerMapMx.Unlock()
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return latest, errors.Wrap(err, "sync")
}
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client := protobufs.NewCeremonyServiceClient(cc)
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response, err := client.GetDataFrame(
context.TODO(),
&protobufs.GetDataFrameRequest{
FrameNumber: 0,
},
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grpc.MaxCallRecvMsgSize(600*1024*1024),
)
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if err != nil {
e.logger.Debug(
"could not get frame",
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zap.Error(err),
)
e.peerMapMx.Lock()
if _, ok := e.peerMap[string(peerId)]; ok {
e.uncooperativePeersMap[string(peerId)] = e.peerMap[string(peerId)]
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e.uncooperativePeersMap[string(peerId)].timestamp = time.Now().UnixMilli()
delete(e.peerMap, string(peerId))
}
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e.peerMapMx.Unlock()
if err := cc.Close(); err != nil {
e.logger.Error("error while closing connection", zap.Error(err))
}
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return latest, errors.Wrap(err, "sync")
}
if response == nil {
e.logger.Debug("received no response from peer")
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if err := cc.Close(); err != nil {
e.logger.Error("error while closing connection", zap.Error(err))
}
return latest, nil
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}
e.logger.Info(
"received new leading frame",
zap.Uint64("frame_number", response.ClockFrame.FrameNumber),
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)
if err := cc.Close(); err != nil {
e.logger.Error("error while closing connection", zap.Error(err))
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}
e.dataTimeReel.Insert(response.ClockFrame, false)
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return response.ClockFrame, nil
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}
func (e *CeremonyDataClockConsensusEngine) collect(
currentFramePublished *protobufs.ClockFrame,
) (*protobufs.ClockFrame, error) {
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e.logger.Info("collecting vdf proofs")
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latest := currentFramePublished
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for {
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peerId, maxFrame, err := e.GetMostAheadPeer(latest.FrameNumber)
if maxFrame > latest.FrameNumber {
e.syncingStatus = SyncStatusSynchronizing
if err != nil {
e.logger.Info("no peers available for sync, waiting")
time.Sleep(5 * time.Second)
} else if maxFrame > latest.FrameNumber {
masterHead, err := e.masterTimeReel.Head()
if err != nil {
panic(err)
}
if masterHead.FrameNumber < maxFrame {
e.logger.Info(
"master frame synchronization needed to continue, waiting",
zap.Uint64("master_frame_head", masterHead.FrameNumber),
zap.Uint64("max_data_frame_target", maxFrame),
)
time.Sleep(30 * time.Second)
continue
}
latest, err = e.sync(latest, maxFrame, peerId)
if err == nil {
break
}
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}
} else {
break
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}
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}
e.syncingStatus = SyncStatusNotSyncing
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if latest.FrameNumber < currentFramePublished.FrameNumber {
latest = currentFramePublished
}
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e.logger.Info(
"returning leader frame",
zap.Uint64("frame_number", latest.FrameNumber),
)
return latest, nil
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}