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PeerDAS: Implement core. (#15192)

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* Fulu: Implement params.

* KZG tests: Re-implement `getRandBlob` to avoid tests cyclical dependencies.

Not ideal, but any better idea welcome.

* Fulu testing util: Implement `GenerateCellsAndProofs`.

* Create `RODataColumn`.

* Implement `MerkleProofKZGCommitments`.

* Export `leavesFromCommitments`.

* Implement peerDAS core.

* Add changelog.

* Update beacon-chain/core/peerdas/das_core.go

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

* Fix Terence's comment: Use `IsNil`.

* Fix Terence's comment: Avoid useless `filteredIndices`.

* Fix Terence's comment: Simplify odd/even cases.

* Fix Terence's comment: Use `IsNil`.

* Spectests: Add Fulu networking

* Fix Terence's comment: `CustodyGroups`: Stick to the spec by returning a (sorted) slice.

* Fix Terence's comment: `CustodyGroups`: Handle correctly the `maxUint256` case.

* Update beacon-chain/core/peerdas/das_core.go

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

* Fix Terence's comment: `ComputeColumnsForCustodyGroup`: Add test if `custodyGroup == numberOfCustodyGroup`

* `CustodyGroups`: Test if `custodyGroupCount > numberOfCustodyGroup`.

* `CustodyGroups`: Add a shortcut if all custody groups are needed.

* `ComputeCystodyGroupForColumn`: Move from `p2p_interface.go` to `das_core.go`.

* Fix Terence's comment: Fix `ComputeCustodyGroupForColumn`.

* Fix Terence's comment: Remove `constructCellsAndProofs` function.

* Fix Terence's comment: `ValidatorsCustodyRequirement`: Use effective balance instead of balance.

* `MerkleProofKZGCommitments`: Add tests

* Remove peer sampling.

* `DataColumnSidecars`: Add missing tests.

* Fix Jame's comment.

* Fix James' comment.

* Fix James' comment.

* Fix James' coment.

* Fix James' comment.

---------

Co-authored-by: terence <terence@prysmaticlabs.com>
This commit is contained in:
Manu NALEPA
2025-05-06 23:37:07 +02:00
committed by GitHub
parent 24cf930952
commit 7da7019a20
39 changed files with 2517 additions and 47 deletions
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30
beacon-chain/core/peerdas/validator.go Normal file
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package peerdas
import (
beaconState "github.com/OffchainLabs/prysm/v6/beacon-chain/state"
"github.com/OffchainLabs/prysm/v6/config/params"
"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
"github.com/pkg/errors"
)
// ValidatorsCustodyRequirement returns the number of custody groups regarding the validator indices attached to the beacon node.
// https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.5/specs/fulu/validator.md#validator-custody
func ValidatorsCustodyRequirement(state beaconState.ReadOnlyBeaconState, validatorsIndex map[primitives.ValidatorIndex]bool) (uint64, error) {
totalNodeBalance := uint64(0)
for index := range validatorsIndex {
validator, err := state.ValidatorAtIndexReadOnly(index)
if err != nil {
return 0, errors.Wrapf(err, "validator at index %v", index)
}
totalNodeBalance += validator.EffectiveBalance()
}
beaconConfig := params.BeaconConfig()
numberOfCustodyGroup := beaconConfig.NumberOfCustodyGroups
validatorCustodyRequirement := beaconConfig.ValidatorCustodyRequirement
balancePerAdditionalCustodyGroup := beaconConfig.BalancePerAdditionalCustodyGroup
count := totalNodeBalance / balancePerAdditionalCustodyGroup
return min(max(count, validatorCustodyRequirement), numberOfCustodyGroup), nil
}