skip eth1data voting after electra (#14835)

* wip skip eth1data voting after electra

* updating technique

* adding fix for electra eth1 voting

* fixing linting on test

* seeing if reversing genesis state fixes problem

* increasing safety of legacy check

* review feedback

* forgot to fix tests

* nishant's feedback

* nishant's feedback

* rename function a little

* Update beacon-chain/core/helpers/legacy.go

Co-authored-by: Jun Song <[email protected]>

* fixing naming

---------

Co-authored-by: Jun Song <[email protected]>

beacon-chain/core/helpers/BUILD.bazel

@@ -7,6 +7,7 @@ go_library(
         "beacon_committee.go",
         "block.go",
         "genesis.go",
+        "legacy.go",
         "metrics.go",
         "randao.go",
         "rewards_penalties.go",
@@ -52,6 +53,7 @@ go_test(
         "attestation_test.go",
         "beacon_committee_test.go",
         "block_test.go",
+        "legacy_test.go",
         "private_access_fuzz_noop_test.go",  # keep
         "private_access_test.go",
         "randao_test.go",
@@ -86,5 +88,6 @@ go_test(
         "//time:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
+        "@com_github_stretchr_testify//require:go_default_library",
     ],
 )

beacon-chain/core/helpers/legacy.go

@@ -0,0 +1,20 @@
+package helpers
+
+import (
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+)
+
+// DepositRequestsStarted determines if the deposit requests have started.
+func DepositRequestsStarted(beaconState state.BeaconState) bool {
+	if beaconState.Version() < version.Electra {
+		return false
+	}
+
+	requestsStartIndex, err := beaconState.DepositRequestsStartIndex()
+	if err != nil {
+		return false
+	}
+
+	return beaconState.Eth1DepositIndex() == requestsStartIndex
+}

beacon-chain/core/helpers/legacy_test.go

@@ -0,0 +1,33 @@
+package helpers_test
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/stretchr/testify/require"
+)
+
+// TestDepositRequestHaveStarted contains several test cases for depositRequestHaveStarted.
+func TestDepositRequestHaveStarted(t *testing.T) {
+	t.Run("Version below Electra returns false", func(t *testing.T) {
+		st, _ := util.DeterministicGenesisStateBellatrix(t, 1)
+		result := helpers.DepositRequestsStarted(st)
+		require.False(t, result)
+	})
+
+	t.Run("Version is Electra or higher, no error, but Eth1DepositIndex != requestsStartIndex returns false", func(t *testing.T) {
+		st, _ := util.DeterministicGenesisStateElectra(t, 1)
+		require.NoError(t, st.SetEth1DepositIndex(1))
+		result := helpers.DepositRequestsStarted(st)
+		require.False(t, result)
+	})
+
+	t.Run("Version is Electra or higher, no error, and Eth1DepositIndex == requestsStartIndex returns true", func(t *testing.T) {
+		st, _ := util.DeterministicGenesisStateElectra(t, 1)
+		require.NoError(t, st.SetEth1DepositIndex(33))
+		require.NoError(t, st.SetDepositRequestsStartIndex(33))
+		result := helpers.DepositRequestsStarted(st)
+		require.True(t, result)
+	})
+}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_deposits.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
@@ -71,6 +72,10 @@ func (vs *Server) packDepositsAndAttestations(
 // this eth1data has enough support to be considered for deposits inclusion. If current vote has
 // enough support, then use that vote for basis of determining deposits, otherwise use current state
 // eth1data.
+// In the post-electra phase, this function will usually return an empty list,
+// as the legacy deposit process is deprecated. (EIP-6110)
+// NOTE: During the transition period, the legacy deposit process
+// may still be active and managed. This function handles that scenario.
 func (vs *Server) deposits(
 	ctx context.Context,
 	beaconState state.BeaconState,
@@ -87,21 +92,19 @@ func (vs *Server) deposits(
 		log.Warn("not connected to eth1 node, skip pending deposit insertion")
 		return []*ethpb.Deposit{}, nil
 	}
+
+	// skip legacy deposits if eth1 deposit index is already at the index of deposit requests start
+	if helpers.DepositRequestsStarted(beaconState) {
+		return []*ethpb.Deposit{}, nil
+	}
+
 	// Need to fetch if the deposits up to the state's latest eth1 data matches
 	// the number of all deposits in this RPC call. If not, then we return nil.
 	canonicalEth1Data, canonicalEth1DataHeight, err := vs.canonicalEth1Data(ctx, beaconState, currentVote)
 	if err != nil {
 		return nil, err
 	}
 
-	// In the post-electra phase, this function will usually return an empty list,
-	// as the legacy deposit process is deprecated. (EIP-6110)
-	// NOTE: During the transition period, the legacy deposit process
-	// may still be active and managed. This function handles that scenario.
-	if !isLegacyDepositProcessPeriod(beaconState, canonicalEth1Data) {
-		return []*ethpb.Deposit{}, nil
-	}
-
 	_, genesisEth1Block := vs.Eth1InfoFetcher.GenesisExecutionChainInfo()
 	if genesisEth1Block.Cmp(canonicalEth1DataHeight) == 0 {
 		return []*ethpb.Deposit{}, nil
@@ -285,21 +288,3 @@ func shouldRebuildTrie(totalDepCount, unFinalizedDeps uint64) bool {
 	unFinalizedCompute := unFinalizedDeps * params.BeaconConfig().DepositContractTreeDepth
 	return unFinalizedCompute > totalDepCount
 }
-
-// isLegacyDepositProcessPeriod determines if the current state should use the legacy deposit process.
-func isLegacyDepositProcessPeriod(beaconState state.BeaconState, canonicalEth1Data *ethpb.Eth1Data) bool {
-	// Before the Electra upgrade, always use the legacy deposit process.
-	if beaconState.Version() < version.Electra {
-		return true
-	}
-
-	// Handle the transition period between the legacy and the new deposit process.
-	requestsStartIndex, err := beaconState.DepositRequestsStartIndex()
-	if err != nil {
-		// If we can't get the deposit requests start index,
-		// we should default to the legacy deposit process.
-		return true
-	}
-	eth1DepositIndexLimit := math.Min(canonicalEth1Data.DepositCount, requestsStartIndex)
-	return beaconState.Eth1DepositIndex() < eth1DepositIndexLimit
-}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_deposits_test.go

@@ -2,14 +2,12 @@ package validator
 
 import (
 	"context"
-	"math"
 	"math/big"
 	"testing"
 
 	mock "github.com/prysmaticlabs/prysm/v5/beacon-chain/blockchain/testing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache/depositsnapshot"
 	mockExecution "github.com/prysmaticlabs/prysm/v5/beacon-chain/execution/testing"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/container/trie"
@@ -214,85 +212,3 @@ func TestProposer_PendingDeposits_Electra(t *testing.T) {
 	assert.Equal(t, 0, len(deposits), "Received unexpected number of pending deposits")
 
 }
-
-func TestIsLegacyDepositProcessPeriod(t *testing.T) {
-	tests := []struct {
-		name              string
-		state             state.BeaconState
-		canonicalEth1Data *ethpb.Eth1Data
-		want              bool
-	}{
-		{
-			name: "pre-electra",
-			state: func() state.BeaconState {
-				st, err := state_native.InitializeFromProtoDeneb(&ethpb.BeaconStateDeneb{
-					Eth1Data: &ethpb.Eth1Data{
-						BlockHash:    []byte("0x0"),
-						DepositRoot:  make([]byte, 32),
-						DepositCount: 5,
-					},
-					Eth1DepositIndex: 1,
-				})
-				require.NoError(t, err)
-				return st
-			}(),
-			canonicalEth1Data: &ethpb.Eth1Data{
-				BlockHash:    []byte("0x0"),
-				DepositRoot:  make([]byte, 32),
-				DepositCount: 5,
-			},
-			want: true,
-		},
-		{
-			name: "post-electra, pending deposits from pre-electra",
-			state: func() state.BeaconState {
-				st, err := state_native.InitializeFromProtoElectra(&ethpb.BeaconStateElectra{
-					Eth1Data: &ethpb.Eth1Data{
-						BlockHash:    []byte("0x0"),
-						DepositRoot:  make([]byte, 32),
-						DepositCount: 5,
-					},
-					DepositRequestsStartIndex: math.MaxUint64,
-					Eth1DepositIndex:          1,
-				})
-				require.NoError(t, err)
-				return st
-			}(),
-			canonicalEth1Data: &ethpb.Eth1Data{
-				BlockHash:    []byte("0x0"),
-				DepositRoot:  make([]byte, 32),
-				DepositCount: 5,
-			},
-			want: true,
-		},
-		{
-			name: "post-electra, no pending deposits from pre-alpaca",
-			state: func() state.BeaconState {
-				st, err := state_native.InitializeFromProtoElectra(&ethpb.BeaconStateElectra{
-					Eth1Data: &ethpb.Eth1Data{
-						BlockHash:    []byte("0x0"),
-						DepositRoot:  make([]byte, 32),
-						DepositCount: 5,
-					},
-					DepositRequestsStartIndex: 1,
-					Eth1DepositIndex:          5,
-				})
-				require.NoError(t, err)
-				return st
-			}(),
-			canonicalEth1Data: &ethpb.Eth1Data{
-				BlockHash:    []byte("0x0"),
-				DepositRoot:  make([]byte, 32),
-				DepositCount: 5,
-			},
-			want: false,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := isLegacyDepositProcessPeriod(tt.state, tt.canonicalEth1Data); got != tt.want {
-				t.Errorf("isLegacyDepositProcessPeriod() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_eth1data.go

@@ -7,6 +7,7 @@ import (
 	"github.com/pkg/errors"
 	fastssz "github.com/prysmaticlabs/fastssz"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/features"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
@@ -30,10 +31,17 @@ import (
 //   - Otherwise:
 //   - Determine the vote with the highest count. Prefer the vote with the highest eth1 block height in the event of a tie.
 //   - This vote's block is the eth1 block to use for the block proposal.
+//
+// After Electra and eth1 deposit transition period voting will no longer be needed
 func (vs *Server) eth1DataMajorityVote(ctx context.Context, beaconState state.BeaconState) (*ethpb.Eth1Data, error) {
 	ctx, cancel := context.WithTimeout(ctx, eth1dataTimeout)
 	defer cancel()
 
+	// post eth1 deposits, the Eth 1 data will then be frozen
+	if helpers.DepositRequestsStarted(beaconState) {
+		return beaconState.Eth1Data(), nil
+	}
+
 	slot := beaconState.Slot()
 	votingPeriodStartTime := vs.slotStartTime(slot)
 

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_test.go

@@ -2698,6 +2698,41 @@ func TestProposer_Eth1Data_MajorityVote(t *testing.T) {
 		expectedHash := []byte("eth1data")
 		assert.DeepEqual(t, expectedHash, hash)
 	})
+
+	t.Run("post electra the head eth1data should be returned", func(t *testing.T) {
+		p := mockExecution.New().
+			InsertBlock(50, earliestValidTime, []byte("earliest")).
+			InsertBlock(100, latestValidTime, []byte("latest"))
+		p.Eth1Data = &ethpb.Eth1Data{
+			BlockHash: []byte("eth1data"),
+		}
+
+		depositCache, err := depositsnapshot.New()
+		require.NoError(t, err)
+
+		beaconState, err := state_native.InitializeFromProtoElectra(&ethpb.BeaconStateElectra{
+			Slot:     slot,
+			Eth1Data: &ethpb.Eth1Data{BlockHash: []byte("legacy"), DepositCount: 1},
+		})
+		require.NoError(t, err)
+
+		ps := &Server{
+			ChainStartFetcher: p,
+			Eth1InfoFetcher:   p,
+			Eth1BlockFetcher:  p,
+			BlockFetcher:      p,
+			DepositFetcher:    depositCache,
+		}
+
+		ctx := context.Background()
+		majorityVoteEth1Data, err := ps.eth1DataMajorityVote(ctx, beaconState)
+		require.NoError(t, err)
+
+		hash := majorityVoteEth1Data.BlockHash
+
+		expectedHash := []byte("legacy")
+		assert.DeepEqual(t, expectedHash, hash)
+	})
 }
 
 func TestProposer_FilterAttestation(t *testing.T) {

changelog/james-prysm_electra-eth1voting.md

@@ -0,0 +1,3 @@
+### Added
+
+- check to stop eth1 voting after electra and eth1 deposits stop

testing/util/electra_state.go

@@ -71,14 +71,14 @@ func genesisBeaconStateElectra(ctx context.Context, deposits []*ethpb.Deposit, g
 	return buildGenesisBeaconStateElectra(genesisTime, st, st.Eth1Data())
 }
 
-// emptyGenesisStateDeneb returns an empty genesis state in Electra format.
+// emptyGenesisStateElectra returns an empty genesis state in Electra format.
 func emptyGenesisStateElectra() (state.BeaconState, error) {
 	st := &ethpb.BeaconStateElectra{
 		// Misc fields.
 		Slot: 0,
 		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().BellatrixForkVersion,
-			CurrentVersion:  params.BeaconConfig().DenebForkVersion,
+			PreviousVersion: params.BeaconConfig().DenebForkVersion,
+			CurrentVersion:  params.BeaconConfig().ElectraForkVersion,
 			Epoch:           0,
 		},
 		// Validator registry fields.