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Validate blobs feature (#12574)

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This commit is contained in:
Potuz
2023-08-03 17:35:30 -03:00
committed by Preston Van Loon
parent 70997e2489
commit 57b8da08d1
15 changed files with 315 additions and 18 deletions
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28
beacon-chain/blockchain/process_block.go
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@@ -6,6 +6,7 @@ import (
"time"
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/kzg"
"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed"
statefeed "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed/state"
@@ -497,6 +498,33 @@ func (s *Service) runLateBlockTasks() {
}
}
func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed interfaces.ReadOnlySignedBeaconBlock) error {
if signed.Version() < version.Deneb {
return nil
}
block := signed.Block()
if block == nil {
return errors.New("invalid nil beacon block")
}
// We are only required to check within MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS
if slots.ToEpoch(block.Slot())+params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest > primitives.Epoch(s.CurrentSlot()) {
return nil
}
body := block.Body()
if body == nil {
return errors.New("invalid nil beacon block body")
}
kzgCommitments, err := body.BlobKzgCommitments()
if err != nil {
return errors.Wrap(err, "could not get KZG commitments")
}
sidecars, err := s.cfg.BeaconDB.BlobSidecarsByRoot(ctx, root)
if err != nil {
return errors.Wrap(err, "could not get blob sidecars")
}
return kzg.IsDataAvailable(kzgCommitments, sidecars)
}
// lateBlockTasks is called 4 seconds into the slot and performs tasks
// related to late blocks. It emits a MissedSlot state feed event.
// It calls FCU and sets the right attributes if we are proposing next slot