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Validator custody: Update to the latest specification. (#15532)

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* Validator custody: Update to the latest specfication.

* Update beacon-chain/blockchain/process_block.go

Co-authored-by: terence <terence@prysmaticlabs.com>

* Fix James' comment.

* Fix James' comment.

* Fix James' comment.

---------

Co-authored-by: terence <terence@prysmaticlabs.com>
Co-authored-by: james-prysm <90280386+james-prysm@users.noreply.github.com>
This commit is contained in:
Manu NALEPA
2025-08-02 08:21:08 +02:00
committed by GitHub
parent ae4b982a6c
commit 149e220b61
84 changed files with 2005 additions and 667 deletions
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22
beacon-chain/blockchain/process_block.go
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@@ -666,7 +666,9 @@ func (s *Service) areDataColumnsAvailable(
root [fieldparams.RootLength]byte,
block interfaces.ReadOnlyBeaconBlock,
) error {
// We are only required to check within MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS.
samplesPerSlot := params.BeaconConfig().SamplesPerSlot
// We are only required to check within MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS
blockSlot, currentSlot := block.Slot(), s.CurrentSlot()
blockEpoch, currentEpoch := slots.ToEpoch(blockSlot), slots.ToEpoch(currentSlot)
if !params.WithinDAPeriod(blockEpoch, currentEpoch) {
@@ -689,16 +691,20 @@ func (s *Service) areDataColumnsAvailable(
}
// All columns to sample need to be available for the block to be considered available.
// https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/fulu/das-core.md#custody-sampling
nodeID := s.cfg.P2P.NodeID()
// Prevent custody group count to change during the rest of the function.
s.cfg.CustodyInfo.Mut.RLock()
defer s.cfg.CustodyInfo.Mut.RUnlock()
// Get the custody group sampling size for the node.
custodyGroupSamplingSize := s.cfg.CustodyInfo.CustodyGroupSamplingSize(peerdas.Actual)
peerInfo, _, err := peerdas.Info(nodeID, custodyGroupSamplingSize)
custodyGroupCount, err := s.cfg.P2P.CustodyGroupCount()
if err != nil {
return errors.Wrap(err, "custody group count")
}
// Compute the sampling size.
// https://github.com/ethereum/consensus-specs/blob/master/specs/fulu/das-core.md#custody-sampling
samplingSize := max(samplesPerSlot, custodyGroupCount)
// Get the peer info for the node.
peerInfo, _, err := peerdas.Info(nodeID, samplingSize)
if err != nil {
return errors.Wrap(err, "peer info")
}