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Implement PrepareSyncCommitteeSubnets in the beacon API (#9498)

Browse Source 
* initial implementation

* final implementation

* review

* fix logic

* refactor duration calculation

* tests

* revert alias change

Co-authored-by: Nishant Das <nishdas93@gmail.com>
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
This commit is contained in:
Radosław Kapka 2021-09-01 19:19:29 +02:00 committed by GitHub
parent 46b22bb649
commit 28e472aa5f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 304 additions and 99 deletions
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72
beacon-chain/rpc/eth/validator/validator.go
View File

@ -5,6 +5,7 @@ import (
"context"
"sort"
"strconv"
"time"
"github.com/golang/protobuf/ptypes/empty"
"github.com/pkg/errors"
@ -415,8 +416,75 @@ func (vs *Server) SubmitBeaconCommitteeSubscription(ctx context.Context, req *et
return &emptypb.Empty{}, nil
}
func (vs *Server) SubmitSyncCommitteeSubscription(ctx context.Context, request *ethpbv2.SubmitSyncCommitteeSubscriptionsRequest) (*empty.Empty, error) {
panic("implement me")
// SubmitSyncCommitteeSubscription subscribe to a number of sync committee subnets.
//
// Subscribing to sync committee subnets is an action performed by VC to enable
// network participation in Altair networks, and only required if the VC has an active
// validator in an active sync committee.
func (vs *Server) SubmitSyncCommitteeSubscription(ctx context.Context, req *ethpbv2.SubmitSyncCommitteeSubscriptionsRequest) (*empty.Empty, error) {
ctx, span := trace.StartSpan(ctx, "validator.SubmitSyncCommitteeSubscription")
defer span.End()
if vs.SyncChecker.Syncing() {
return nil, status.Error(codes.Unavailable, "Syncing to latest head, not ready to respond")
}
if len(req.Data) == 0 {
return nil, status.Error(codes.InvalidArgument, "No subscriptions provided")
}
s, err := vs.HeadFetcher.HeadState(ctx)
if err != nil {
return nil, status.Errorf(codes.Internal, "Could not get head state: %v", err)
}
currEpoch := helpers.SlotToEpoch(s.Slot())
validators := make([]state.ReadOnlyValidator, len(req.Data))
for i, sub := range req.Data {
val, err := s.ValidatorAtIndexReadOnly(sub.ValidatorIndex)
if err != nil {
return nil, status.Errorf(codes.Internal, "Could not get validator at index %d: %v", sub.ValidatorIndex, err)
}
valStatus, err := rpchelpers.ValidatorSubStatus(val, currEpoch)
if err != nil {
return nil, status.Errorf(codes.Internal, "Could not get validator status at index %d: %v", sub.ValidatorIndex, err)
}
if valStatus != ethpbv1.ValidatorStatus_ACTIVE_ONGOING && valStatus != ethpbv1.ValidatorStatus_ACTIVE_EXITING {
return nil, status.Errorf(codes.InvalidArgument, "Validator at index %d is not active or exiting: %v", sub.ValidatorIndex, err)
}
validators[i] = val
}
currPeriod := helpers.SyncCommitteePeriod(currEpoch)
startEpoch := types.Epoch(currPeriod * uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod))
for i, sub := range req.Data {
if sub.UntilEpoch < currEpoch {
return nil, status.Errorf(codes.InvalidArgument, "Epoch for subscription at index %d is in the past. It must be at least %d", i, currEpoch)
}
maxValidEpoch := startEpoch + params.BeaconConfig().EpochsPerSyncCommitteePeriod
if sub.UntilEpoch > maxValidEpoch {
return nil, status.Errorf(
codes.InvalidArgument,
"Epoch for subscription at index %d is too far in the future. It can be at most %d",
i,
maxValidEpoch,
)
}
}
for i, sub := range req.Data {
pubkey48 := validators[i].PublicKey()
// Handle overflow in the event current epoch is less than end epoch.
// This is an impossible condition, so it is a defensive check.
epochsToWatch, err := sub.UntilEpoch.SafeSub(uint64(startEpoch))
if err != nil {
epochsToWatch = 0
}
epochDuration := time.Duration(params.BeaconConfig().SlotsPerEpoch.Mul(params.BeaconConfig().SecondsPerSlot)) * time.Second
totalDuration := epochDuration * time.Duration(epochsToWatch)
cache.SyncSubnetIDs.AddSyncCommitteeSubnets(pubkey48[:], startEpoch, sub.SyncCommitteeIndices, totalDuration)
}
return &empty.Empty{}, nil
}
func (vs *Server) ProduceSyncCommitteeContribution(

141
beacon-chain/rpc/eth/validator/validator_test.go
View File

@ -852,6 +852,147 @@ func TestSubmitBeaconCommitteeSubscription_SyncNotReady(t *testing.T) {
assert.ErrorContains(t, "Syncing to latest head, not ready to respond", err)
}
func TestSubmitSyncCommitteeSubscription(t *testing.T) {
ctx := context.Background()
genesis := sharedtestutil.NewBeaconBlock()
deposits, _, err := sharedtestutil.DeterministicDepositsAndKeys(64)
require.NoError(t, err)
eth1Data, err := sharedtestutil.DeterministicEth1Data(len(deposits))
require.NoError(t, err)
bs, err := sharedtestutil.GenesisBeaconState(context.Background(), deposits, 0, eth1Data)
require.NoError(t, err, "Could not set up genesis state")
// Set state to epoch 1.
require.NoError(t, bs.SetSlot(params.BeaconConfig().SlotsPerEpoch))
genesisRoot, err := genesis.Block.HashTreeRoot()
require.NoError(t, err, "Could not get signing root")
roots := make([][]byte, params.BeaconConfig().SlotsPerHistoricalRoot)
roots[0] = genesisRoot[:]
require.NoError(t, bs.SetBlockRoots(roots))
pubkeys := make([][]byte, len(deposits))
for i := 0; i < len(deposits); i++ {
pubkeys[i] = deposits[i].Data.PublicKey
}
chainSlot := types.Slot(0)
chain := &mockChain.ChainService{
State: bs, Root: genesisRoot[:], Slot: &chainSlot,
}
vs := &Server{
HeadFetcher: chain,
TimeFetcher: chain,
SyncChecker: &mockSync.Sync{IsSyncing: false},
V1Alpha1Server: &v1alpha1validator.Server{},
}
t.Run("Single subscription", func(t *testing.T) {
cache.SyncSubnetIDs.EmptyAllCaches()
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: []*ethpbv2.SyncCommitteeSubscription{
{
ValidatorIndex: 0,
SyncCommitteeIndices: []uint64{0, 2},
UntilEpoch: 1,
},
},
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NoError(t, err)
subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[0], 0)
require.Equal(t, 2, len(subnets))
assert.Equal(t, uint64(0), subnets[0])
assert.Equal(t, uint64(2), subnets[1])
})
t.Run("Multiple subscriptions", func(t *testing.T) {
cache.SyncSubnetIDs.EmptyAllCaches()
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: []*ethpbv2.SyncCommitteeSubscription{
{
ValidatorIndex: 0,
SyncCommitteeIndices: []uint64{0},
UntilEpoch: 1,
},
{
ValidatorIndex: 1,
SyncCommitteeIndices: []uint64{2},
UntilEpoch: 1,
},
},
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NoError(t, err)
subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[0], 0)
require.Equal(t, 1, len(subnets))
assert.Equal(t, uint64(0), subnets[0])
subnets, _, _, _ = cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[1], 0)
require.Equal(t, 1, len(subnets))
assert.Equal(t, uint64(2), subnets[0])
})
t.Run("No subscriptions", func(t *testing.T) {
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: make([]*ethpbv2.SyncCommitteeSubscription, 0),
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NotNil(t, err)
assert.ErrorContains(t, "No subscriptions provided", err)
})
t.Run("Invalid validator index", func(t *testing.T) {
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: []*ethpbv2.SyncCommitteeSubscription{
{
ValidatorIndex: 99,
SyncCommitteeIndices: []uint64{},
UntilEpoch: 1,
},
},
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NotNil(t, err)
assert.ErrorContains(t, "Could not get validator at index 99", err)
})
t.Run("Epoch in the past", func(t *testing.T) {
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: []*ethpbv2.SyncCommitteeSubscription{
{
ValidatorIndex: 0,
SyncCommitteeIndices: []uint64{},
UntilEpoch: 0,
},
},
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NotNil(t, err)
assert.ErrorContains(t, "Epoch for subscription at index 0 is in the past", err)
})
t.Run("Epoch too far in the future", func(t *testing.T) {
req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
Data: []*ethpbv2.SyncCommitteeSubscription{
{
ValidatorIndex: 0,
SyncCommitteeIndices: []uint64{},
UntilEpoch: params.BeaconConfig().EpochsPerSyncCommitteePeriod + 1,
},
},
}
_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
require.NotNil(t, err)
assert.ErrorContains(t, "Epoch for subscription at index 0 is too far in the future", err)
})
}
func TestSubmitSyncCommitteeSubscription_SyncNotReady(t *testing.T) {
vs := &Server{
SyncChecker: &mockSync.Sync{IsSyncing: true},
}
_, err := vs.SubmitSyncCommitteeSubscription(context.Background(), &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{})
assert.ErrorContains(t, "Syncing to latest head, not ready to respond", err)
}
func TestSubmitAggregateAndProofs(t *testing.T) {
ctx := context.Background()
params.SetupTestConfigCleanup(t)

184
proto/eth/v2/validator.pb.go generated
View File

@ -357,7 +357,7 @@ type SyncCommitteeSubscription struct {
unknownFields protoimpl.UnknownFields
ValidatorIndex github_com_prysmaticlabs_eth2_types.ValidatorIndex `protobuf:"varint,1,opt,name=validator_index,json=validatorIndex,proto3" json:"validator_index,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.ValidatorIndex"`
SyncCommitteeIndices []github_com_prysmaticlabs_eth2_types.CommitteeIndex `protobuf:"varint,2,rep,packed,name=sync_committee_indices,json=syncCommitteeIndices,proto3" json:"sync_committee_indices,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.CommitteeIndex"`
SyncCommitteeIndices []uint64 `protobuf:"varint,2,rep,packed,name=sync_committee_indices,json=syncCommitteeIndices,proto3" json:"sync_committee_indices,omitempty"`
UntilEpoch github_com_prysmaticlabs_eth2_types.Epoch `protobuf:"varint,3,opt,name=until_epoch,json=untilEpoch,proto3" json:"until_epoch,omitempty" cast-type:"github.com/prysmaticlabs/eth2-types.Epoch"`
}
@ -400,11 +400,11 @@ func (x *SyncCommitteeSubscription) GetValidatorIndex() github_com_prysmaticlabs
return github_com_prysmaticlabs_eth2_types.ValidatorIndex(0)
}
func (x *SyncCommitteeSubscription) GetSyncCommitteeIndices() []github_com_prysmaticlabs_eth2_types.CommitteeIndex {
func (x *SyncCommitteeSubscription) GetSyncCommitteeIndices() []uint64 {
if x != nil {
return x.SyncCommitteeIndices
}
return []github_com_prysmaticlabs_eth2_types.CommitteeIndex(nil)
return nil
}
func (x *SyncCommitteeSubscription) GetUntilEpoch() github_com_prysmaticlabs_eth2_types.Epoch {
@ -832,7 +832,7 @@ var file_proto_eth_v2_validator_proto_rawDesc = []byte{
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}
var (

2
proto/eth/v2/validator.proto
View File

@ -73,7 +73,7 @@ message SyncCommitteeSubscription {
uint64 validator_index = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.ValidatorIndex"];
// The sync committee indices to be subscribed to.
repeated uint64 sync_committee_indices = 2 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.CommitteeIndex"];
repeated uint64 sync_committee_indices = 2;
// The final epoch that the specified validator requires the subscription for.
uint64 until_epoch = 3 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Epoch"];