add change in

* Save to checkpoint cache if the nsc hits

Also move the head check before the checkpoint cache check

* add unit test

.buildkite-bazelrc

@@ -43,4 +43,12 @@ build --flaky_test_attempts=5
 
 # Better caching
 build:nostamp --nostamp
-build:nostamp --workspace_status_command=./hack/workspace_status_ci.sh
+
+# Build metadata
+build --build_metadata=ROLE=CI
+build --build_metadata=REPO_URL=https://github.com/prysmaticlabs/prysm.git
+build --workspace_status_command=./hack/workspace_status_ci.sh
+
+# Buildbuddy
+build --bes_results_url=https://app.buildbuddy.io/invocation/
+build --bes_backend=grpcs://remote.buildbuddy.io

.github/workflows/go.yml

@@ -26,14 +26,14 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Set up Go 1.19
+      - name: Set up Go 1.20
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: '1.20'
       - name: Run Gosec Security Scanner
         run: | # https://github.com/securego/gosec/issues/469
           export PATH=$PATH:$(go env GOPATH)/bin
-          go install github.com/securego/gosec/v2/cmd/gosec@v2.12.0
+          go install github.com/securego/gosec/v2/cmd/gosec@v2.15.0
           gosec -exclude=G307 -exclude-dir=crypto/bls/herumi ./...
 
   lint:
@@ -43,16 +43,16 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up Go 1.19
+      - name: Set up Go 1.20
         uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: '1.20'
           id: go
 
       - name: Golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.50.1
+          version: v1.52.2
           args: --config=.golangci.yml --out-${NO_FUTURE}format colored-line-number
 
   build:
@@ -62,7 +62,7 @@ jobs:
       - name: Set up Go 1.x
         uses: actions/setup-go@v2
         with:
-          go-version: 1.19
+          go-version: '1.20'
         id: go
 
       - name: Check out code into the Go module directory

.golangci.yml

@@ -17,6 +17,10 @@ linters:
     - errcheck
     - gosimple
     - gocognit
+    - dupword
+    - nilerr
+    - whitespace
+    - misspell
 
 linters-settings:
   gocognit:

README.md

@@ -2,8 +2,8 @@
 
 [![Build status](https://badge.buildkite.com/b555891daf3614bae4284dcf365b2340cefc0089839526f096.svg?branch=master)](https://buildkite.com/prysmatic-labs/prysm)
 [![Go Report Card](https://goreportcard.com/badge/github.com/prysmaticlabs/prysm)](https://goreportcard.com/report/github.com/prysmaticlabs/prysm)
-[![Consensus_Spec_Version 1.2.0](https://img.shields.io/badge/Consensus%20Spec%20Version-v1.2.0-blue.svg)](https://github.com/ethereum/consensus-specs/tree/v1.2.0)
-[![Execution_API_Version 1.0.0-beta.1](https://img.shields.io/badge/Execution%20API%20Version-v1.0.0.beta.1-blue.svg)](https://github.com/ethereum/execution-apis/tree/v1.0.0-beta.1/src/engine)
+[![Consensus_Spec_Version 1.3.0](https://img.shields.io/badge/Consensus%20Spec%20Version-v1.3.0-blue.svg)](https://github.com/ethereum/consensus-specs/tree/v1.3.0)
+[![Execution_API_Version 1.0.0-beta.2](https://img.shields.io/badge/Execution%20API%20Version-v1.0.0.beta.2-blue.svg)](https://github.com/ethereum/execution-apis/tree/v1.0.0-beta.2/src/engine)
 [![Discord](https://user-images.githubusercontent.com/7288322/34471967-1df7808a-efbb-11e7-9088-ed0b04151291.png)](https://discord.gg/CTYGPUJ)
 [![GitPOAP Badge](https://public-api.gitpoap.io/v1/repo/prysmaticlabs/prysm/badge)](https://www.gitpoap.io/gh/prysmaticlabs/prysm)
 

WORKSPACE

@@ -86,10 +86,10 @@ http_archive(
         # Expose internals of go_test for custom build transitions.
         "//third_party:io_bazel_rules_go_test.patch",
     ],
-    sha256 = "dd926a88a564a9246713a9c00b35315f54cbd46b31a26d5d8fb264c07045f05d",
+    sha256 = "6b65cb7917b4d1709f9410ffe00ecf3e160edf674b78c54a894471320862184f",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.38.1/rules_go-v0.38.1.zip",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.38.1/rules_go-v0.38.1.zip",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.39.0/rules_go-v0.39.0.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.39.0/rules_go-v0.39.0.zip",
     ],
 )
 
@@ -164,7 +164,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 go_rules_dependencies()
 
 go_register_toolchains(
-    go_version = "1.19.7",
+    go_version = "1.20.3",
     nogo = "@//:nogo",
 )
 
@@ -205,7 +205,7 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.3.0-rc.5"
+consensus_spec_version = "v1.3.0"
 
 bls_test_version = "v0.1.1"
 
@@ -221,7 +221,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "266006512e71e62396e8f31be01639560c9d59a93c38220fd8f51fabefc8f5f3",
+    sha256 = "1c806e04ac5e3779032c06a6009350b3836b6809bb23812993d6ececd7047cf5",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )
 
@@ -237,7 +237,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "2ebf483830165909cb7961562fd369dedf079997a4832cc215a543898a73aa46",
+    sha256 = "2b42796dc5ccd9f1246032d0c17663e20f70334ff7e00325f0fc3af28cb24186",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )
 
@@ -253,7 +253,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "333718ba5c907e0a99580caa8d28dd710543b3b271e4251581006d0e101fbce9",
+    sha256 = "231e3371e81ce9acde65d2910ec4580587e74dbbcfcbd9c675e473e022deec8a",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )
 
@@ -268,7 +268,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "78b6925b5a4208e32385fa4387d2c27b381a8ddd18d66d5a7787e7846b86bfc8",
+    sha256 = "219b74d95664ea7e8dfbf31162dfa206b9c0cf45919ea86db5fa0f8902977e3c",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )

api/client/beacon/checkpoint.go

@@ -126,7 +126,7 @@ type WeakSubjectivityData struct {
 }
 
 // CheckpointString returns the standard string representation of a Checkpoint.
-// The format is a a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
+// The format is a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
 // "0x1c35540cac127315fabb6bf29181f2ae0de1a3fc909d2e76ba771e61312cc49a:74888"
 func (wsd *WeakSubjectivityData) CheckpointString() string {
 	return fmt.Sprintf("%#x:%d", wsd.BlockRoot, wsd.Epoch)

api/client/builder/BUILD.bazel

@@ -11,10 +11,12 @@ go_library(
     importpath = "github.com/prysmaticlabs/prysm/v4/api/client/builder",
     visibility = ["//visibility:public"],
     deps = [
+        "//consensus-types:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//math:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//network:go_default_library",
         "//network/authorization:go_default_library",

api/client/builder/bid.go

@@ -3,10 +3,13 @@ package builder
 import (
 	"math/big"
 
+	"github.com/pkg/errors"
 	ssz "github.com/prysmaticlabs/fastssz"
+	consensus_types "github.com/prysmaticlabs/prysm/v4/consensus-types"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/math"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 )
@@ -38,7 +41,7 @@ type signedBuilderBid struct {
 func WrappedSignedBuilderBid(p *ethpb.SignedBuilderBid) (SignedBid, error) {
 	w := signedBuilderBid{p: p}
 	if w.IsNil() {
-		return nil, blocks.ErrNilObjectWrapped
+		return nil, consensus_types.ErrNilObjectWrapped
 	}
 	return w, nil
 }
@@ -71,7 +74,7 @@ type signedBuilderBidCapella struct {
 func WrappedSignedBuilderBidCapella(p *ethpb.SignedBuilderBidCapella) (SignedBid, error) {
 	w := signedBuilderBidCapella{p: p}
 	if w.IsNil() {
-		return nil, blocks.ErrNilObjectWrapped
+		return nil, consensus_types.ErrNilObjectWrapped
 	}
 	return w, nil
 }
@@ -104,7 +107,7 @@ type builderBid struct {
 func WrappedBuilderBid(p *ethpb.BuilderBid) (Bid, error) {
 	w := builderBid{p: p}
 	if w.IsNil() {
-		return nil, blocks.ErrNilObjectWrapped
+		return nil, consensus_types.ErrNilObjectWrapped
 	}
 	return w, nil
 }
@@ -152,16 +155,19 @@ type builderBidCapella struct {
 func WrappedBuilderBidCapella(p *ethpb.BuilderBidCapella) (Bid, error) {
 	w := builderBidCapella{p: p}
 	if w.IsNil() {
-		return nil, blocks.ErrNilObjectWrapped
+		return nil, consensus_types.ErrNilObjectWrapped
 	}
 	return w, nil
 }
 
 // Header returns the execution data interface.
 func (b builderBidCapella) Header() (interfaces.ExecutionData, error) {
+	if b.p == nil {
+		return nil, errors.New("builder bid is nil")
+	}
 	// We have to convert big endian to little endian because the value is coming from the execution layer.
-	v := bytesutil.ReverseByteOrder(b.p.Value)
-	return blocks.WrappedExecutionPayloadHeaderCapella(b.p.Header, big.NewInt(0).SetBytes(v))
+	v := big.NewInt(0).SetBytes(bytesutil.ReverseByteOrder(b.p.Value))
+	return blocks.WrappedExecutionPayloadHeaderCapella(b.p.Header, math.WeiToGwei(v))
 }
 
 // Version --

api/client/builder/client.go

@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"math/big"
 	"net"
 	"net/http"
 	"net/url"
@@ -157,6 +156,7 @@ func (c *Client) do(ctx context.Context, method string, path string, body io.Rea
 	if err != nil {
 		return
 	}
+	req.Header.Add("User-Agent", version.BuildData())
 	for _, o := range opts {
 		o(req)
 	}
@@ -245,7 +245,6 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 	default:
 		return nil, fmt.Errorf("unsupported header version %s", strings.ToLower(v.Version))
 	}
-
 }
 
 // RegisterValidator encodes the SignedValidatorRegistrationV1 message to json (including hex-encoding the byte
@@ -307,6 +306,9 @@ func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlyS
 		if err := json.Unmarshal(rb, ep); err != nil {
 			return nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlock response")
 		}
+		if strings.ToLower(ep.Version) != version.String(version.Bellatrix) {
+			return nil, errors.New("not a bellatrix payload")
+		}
 		p, err := ep.ToProto()
 		if err != nil {
 			return nil, errors.Wrapf(err, "could not extract proto message from payload")
@@ -337,11 +339,14 @@ func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlyS
 		if err := json.Unmarshal(rb, ep); err != nil {
 			return nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlockCapella response")
 		}
+		if strings.ToLower(ep.Version) != version.String(version.Capella) {
+			return nil, errors.New("not a capella payload")
+		}
 		p, err := ep.ToProto()
 		if err != nil {
 			return nil, errors.Wrapf(err, "could not extract proto message from payload")
 		}
-		return blocks.WrappedExecutionPayloadCapella(p, big.NewInt(0))
+		return blocks.WrappedExecutionPayloadCapella(p, 0)
 	default:
 		return nil, fmt.Errorf("unsupported block version %s", version.String(sb.Version()))
 	}

api/client/builder/client_test.go

@@ -313,6 +313,26 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		assert.DeepEqual(t, ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943"), withdrawals[0].Address)
 		assert.Equal(t, uint64(1), withdrawals[0].Amount)
 	})
+	t.Run("mismatched versions, expected bellatrix got capella", func(t *testing.T) {
+		hc := &http.Client{
+			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayloadCapella)), // send a Capella payload
+					Request:    r.Clone(ctx),
+				}, nil
+			}),
+		}
+		c := &Client{
+			hc:      hc,
+			baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+		}
+		sbbb, err := blocks.NewSignedBeaconBlock(testSignedBlindedBeaconBlockBellatrix(t))
+		require.NoError(t, err)
+		_, err = c.SubmitBlindedBlock(ctx, sbbb)
+		require.ErrorContains(t, "not a bellatrix payload", err)
+	})
 	t.Run("not blinded", func(t *testing.T) {
 		sbb, err := blocks.NewSignedBeaconBlock(&eth.SignedBeaconBlockBellatrix{Block: &eth.BeaconBlockBellatrix{Body: &eth.BeaconBlockBodyBellatrix{}}})
 		require.NoError(t, err)

api/client/builder/types.go

@@ -346,6 +346,74 @@ func (p *ExecutionPayload) ToProto() (*v1.ExecutionPayload, error) {
 	}, nil
 }
 
+// FromProto converts a proto execution payload type to our builder
+// compatible payload type.
+func FromProto(payload *v1.ExecutionPayload) (ExecutionPayload, error) {
+	bFee, err := sszBytesToUint256(payload.BaseFeePerGas)
+	if err != nil {
+		return ExecutionPayload{}, err
+	}
+	txs := make([]hexutil.Bytes, len(payload.Transactions))
+	for i := range payload.Transactions {
+		txs[i] = payload.Transactions[i]
+	}
+	return ExecutionPayload{
+		ParentHash:    payload.ParentHash,
+		FeeRecipient:  payload.FeeRecipient,
+		StateRoot:     payload.StateRoot,
+		ReceiptsRoot:  payload.ReceiptsRoot,
+		LogsBloom:     payload.LogsBloom,
+		PrevRandao:    payload.PrevRandao,
+		BlockNumber:   Uint64String(payload.BlockNumber),
+		GasLimit:      Uint64String(payload.GasLimit),
+		GasUsed:       Uint64String(payload.GasUsed),
+		Timestamp:     Uint64String(payload.Timestamp),
+		ExtraData:     payload.ExtraData,
+		BaseFeePerGas: bFee,
+		BlockHash:     payload.BlockHash,
+		Transactions:  txs,
+	}, nil
+}
+
+// FromProtoCapella converts a proto execution payload type for capella to our
+// builder compatible payload type.
+func FromProtoCapella(payload *v1.ExecutionPayloadCapella) (ExecutionPayloadCapella, error) {
+	bFee, err := sszBytesToUint256(payload.BaseFeePerGas)
+	if err != nil {
+		return ExecutionPayloadCapella{}, err
+	}
+	txs := make([]hexutil.Bytes, len(payload.Transactions))
+	for i := range payload.Transactions {
+		txs[i] = payload.Transactions[i]
+	}
+	withdrawals := make([]Withdrawal, len(payload.Withdrawals))
+	for i, w := range payload.Withdrawals {
+		withdrawals[i] = Withdrawal{
+			Index:          Uint256{Int: big.NewInt(0).SetUint64(w.Index)},
+			ValidatorIndex: Uint256{Int: big.NewInt(0).SetUint64(uint64(w.ValidatorIndex))},
+			Address:        w.Address,
+			Amount:         Uint256{Int: big.NewInt(0).SetUint64(w.Amount)},
+		}
+	}
+	return ExecutionPayloadCapella{
+		ParentHash:    payload.ParentHash,
+		FeeRecipient:  payload.FeeRecipient,
+		StateRoot:     payload.StateRoot,
+		ReceiptsRoot:  payload.ReceiptsRoot,
+		LogsBloom:     payload.LogsBloom,
+		PrevRandao:    payload.PrevRandao,
+		BlockNumber:   Uint64String(payload.BlockNumber),
+		GasLimit:      Uint64String(payload.GasLimit),
+		GasUsed:       Uint64String(payload.GasUsed),
+		Timestamp:     Uint64String(payload.Timestamp),
+		ExtraData:     payload.ExtraData,
+		BaseFeePerGas: bFee,
+		BlockHash:     payload.BlockHash,
+		Transactions:  txs,
+		Withdrawals:   withdrawals,
+	}, nil
+}
+
 type ExecHeaderResponseCapella struct {
 	Data struct {
 		Signature hexutil.Bytes      `json:"signature"`

api/gateway/gateway.go

@@ -70,15 +70,16 @@ type Gateway struct {
 func New(ctx context.Context, opts ...Option) (*Gateway, error) {
 	g := &Gateway{
 		ctx: ctx,
-		cfg: &config{
-			router: mux.NewRouter(),
-		},
+		cfg: &config{},
 	}
 	for _, opt := range opts {
 		if err := opt(g); err != nil {
 			return nil, err
 		}
 	}
+	if g.cfg.router == nil {
+		g.cfg.router = mux.NewRouter()
+	}
 	return g, nil
 }
 

api/gateway/options.go

@@ -10,11 +10,6 @@ import (
 
 type Option func(g *Gateway) error
 
-func (g *Gateway) SetRouter(r *mux.Router) *Gateway {
-	g.cfg.router = r
-	return g
-}
-
 func WithPbHandlers(handlers []*PbMux) Option {
 	return func(g *Gateway) error {
 		g.cfg.pbHandlers = handlers

async/scatter.go

@@ -14,7 +14,7 @@ type WorkerResults struct {
 
 // Scatter scatters a computation across multiple goroutines.
 // This breaks the task in to a number of chunks and executes those chunks in parallel with the function provided.
-// Results returned are collected and presented a a set of WorkerResults, which can be reassembled by the calling function.
+// Results returned are collected and presented as a set of WorkerResults, which can be reassembled by the calling function.
 // Any error that occurs in the workers will be passed back to the calling function.
 func Scatter(inputLen int, sFunc func(int, int, *sync.RWMutex) (interface{}, error)) ([]*WorkerResults, error) {
 	if inputLen <= 0 {

beacon-chain/blockchain/BUILD.bazel

@@ -58,11 +58,13 @@ go_library(
         "//beacon-chain/operations/slashings:go_default_library",
         "//beacon-chain/operations/voluntaryexits:go_default_library",
         "//beacon-chain/p2p:go_default_library",
+        "//beacon-chain/startup:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
         "//config/features:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/payload-attribute:go_default_library",
@@ -118,6 +120,7 @@ go_test(
         "receive_attestation_test.go",
         "receive_block_test.go",
         "service_test.go",
+        "setup_test.go",
         "weak_subjectivity_checks_test.go",
     ],
     embed = [":go_default_library"],
@@ -167,6 +170,7 @@ go_test(
         "mock_test.go",
         "receive_block_test.go",
         "service_norace_test.go",
+        "setup_test.go",
     ],
     embed = [":go_default_library"],
     gc_goopts = [

beacon-chain/blockchain/chain_info.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
+	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
@@ -85,6 +86,12 @@ type ForkFetcher interface {
 	TimeFetcher
 }
 
+// TemporalOracle is like ForkFetcher minus CurrentFork()
+type TemporalOracle interface {
+	GenesisFetcher
+	TimeFetcher
+}
+
 // CanonicalFetcher retrieves the current chain's canonical information.
 type CanonicalFetcher interface {
 	IsCanonical(ctx context.Context, blockRoot [32]byte) (bool, error)
@@ -96,6 +103,8 @@ type FinalizationFetcher interface {
 	FinalizedCheckpt() *ethpb.Checkpoint
 	CurrentJustifiedCheckpt() *ethpb.Checkpoint
 	PreviousJustifiedCheckpt() *ethpb.Checkpoint
+	UnrealizedJustifiedPayloadBlockHash() [32]byte
+	FinalizedBlockHash() [32]byte
 	InForkchoice([32]byte) bool
 	IsFinalized(ctx context.Context, blockRoot [32]byte) bool
 }
@@ -325,7 +334,7 @@ func (s *Service) HeadValidatorIndexToPublicKey(_ context.Context, index primiti
 }
 
 // IsOptimistic returns true if the current head is optimistic.
-func (s *Service) IsOptimistic(ctx context.Context) (bool, error) {
+func (s *Service) IsOptimistic(_ context.Context) (bool, error) {
 	if slots.ToEpoch(s.CurrentSlot()) < params.BeaconConfig().BellatrixForkEpoch {
 		return false, nil
 	}
@@ -372,6 +381,14 @@ func (s *Service) InForkchoice(root [32]byte) bool {
 	return s.cfg.ForkChoiceStore.HasNode(root)
 }
 
+// IsViableForkCheckpoint returns whether the given checkpoint is a checkpoint in any
+// chain known to forkchoice
+func (s *Service) IsViableForCheckpoint(cp *forkchoicetypes.Checkpoint) (bool, error) {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.IsViableForCheckpoint(cp)
+}
+
 // IsOptimisticForRoot takes the root as argument instead of the current head
 // and returns true if it is optimistic.
 func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error) {
@@ -400,7 +417,10 @@ func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool,
 	}
 
 	if ss == nil {
-		return true, errInvalidNilSummary
+		ss, err = s.recoverStateSummary(ctx, root)
+		if err != nil {
+			return true, err
+		}
 	}
 	validatedCheckpoint, err := s.cfg.BeaconDB.LastValidatedCheckpoint(ctx)
 	if err != nil {
@@ -426,7 +446,10 @@ func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool,
 		return false, err
 	}
 	if lastValidated == nil {
-		return false, errInvalidNilSummary
+		lastValidated, err = s.recoverStateSummary(ctx, root)
+		if err != nil {
+			return false, err
+		}
 	}
 
 	if ss.Slot > lastValidated.Slot {
@@ -474,3 +497,18 @@ func (s *Service) Ancestor(ctx context.Context, root []byte, slot primitives.Slo
 func (s *Service) SetGenesisTime(t time.Time) {
 	s.genesisTime = t
 }
+
+func (s *Service) recoverStateSummary(ctx context.Context, blockRoot [32]byte) (*ethpb.StateSummary, error) {
+	if s.cfg.BeaconDB.HasBlock(ctx, blockRoot) {
+		b, err := s.cfg.BeaconDB.Block(ctx, blockRoot)
+		if err != nil {
+			return nil, err
+		}
+		summary := &ethpb.StateSummary{Slot: b.Block().Slot(), Root: blockRoot[:]}
+		if err := s.cfg.BeaconDB.SaveStateSummary(ctx, summary); err != nil {
+			return nil, err
+		}
+		return summary, nil
+	}
+	return nil, errBlockDoesNotExist
+}

beacon-chain/blockchain/chain_info_forkchoice.go

@@ -78,3 +78,17 @@ func (s *Service) ChainHeads() ([][32]byte, []primitives.Slot) {
 	defer s.cfg.ForkChoiceStore.RUnlock()
 	return s.cfg.ForkChoiceStore.Tips()
 }
+
+// UnrealizedJustifiedPayloadBlockHash returns unrealized justified payload block hash from forkchoice.
+func (s *Service) UnrealizedJustifiedPayloadBlockHash() [32]byte {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.UnrealizedJustifiedPayloadBlockHash()
+}
+
+// FinalizedBlockHash returns finalized payload block hash from forkchoice.
+func (s *Service) FinalizedBlockHash() [32]byte {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.FinalizedPayloadBlockHash()
+}

beacon-chain/blockchain/chain_info_test.go

@@ -10,7 +10,6 @@ import (
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v4/beacon-chain/state/state-native"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
@@ -72,16 +71,8 @@ func TestHeadRoot_Nil(t *testing.T) {
 }
 
 func TestFinalizedCheckpt_GenesisRootOk(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fcs),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
 
 	gs, _ := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -97,16 +88,8 @@ func TestFinalizedCheckpt_GenesisRootOk(t *testing.T) {
 }
 
 func TestCurrentJustifiedCheckpt_CanRetrieve(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fcs),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
 	jroot := [32]byte{'j'}
 	cp := &forkchoicetypes.Checkpoint{Epoch: 6, Root: jroot}
@@ -119,6 +102,37 @@ func TestCurrentJustifiedCheckpt_CanRetrieve(t *testing.T) {
 	require.Equal(t, cp.Root, bytesutil.ToBytes32(jp.Root))
 }
 
+func TestFinalizedBlockHash(t *testing.T) {
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
+
+	r := [32]byte{'f'}
+	cp := &forkchoicetypes.Checkpoint{Epoch: 6, Root: r}
+	bState, _ := util.DeterministicGenesisState(t, 10)
+	require.NoError(t, beaconDB.SaveState(ctx, bState, r))
+
+	require.NoError(t, fcs.UpdateFinalizedCheckpoint(cp))
+	h := service.FinalizedBlockHash()
+	require.Equal(t, params.BeaconConfig().ZeroHash, h)
+	require.Equal(t, r, fcs.FinalizedCheckpoint().Root)
+}
+
+func TestUnrealizedJustifiedBlockHash(t *testing.T) {
+	ctx := context.Background()
+	service := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}}
+	ojc := &ethpb.Checkpoint{Root: []byte{'j'}}
+	ofc := &ethpb.Checkpoint{Root: []byte{'f'}}
+	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	service.cfg.ForkChoiceStore.SetBalancesByRooter(func(_ context.Context, _ [32]byte) ([]uint64, error) { return []uint64{}, nil })
+	require.NoError(t, service.cfg.ForkChoiceStore.UpdateJustifiedCheckpoint(ctx, &forkchoicetypes.Checkpoint{Epoch: 6, Root: [32]byte{'j'}}))
+
+	h := service.UnrealizedJustifiedPayloadBlockHash()
+	require.Equal(t, params.BeaconConfig().ZeroHash, h)
+	require.Equal(t, [32]byte{'j'}, service.cfg.ForkChoiceStore.JustifiedCheckpoint().Root)
+}
+
 func TestHeadSlot_CanRetrieve(t *testing.T) {
 	c := &Service{}
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{})
@@ -131,16 +145,9 @@ func TestHeadSlot_CanRetrieve(t *testing.T) {
 }
 
 func TestHeadRoot_CanRetrieve(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fcs),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
+
 	gs, _ := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
 
@@ -150,16 +157,8 @@ func TestHeadRoot_CanRetrieve(t *testing.T) {
 }
 
 func TestHeadRoot_UseDB(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fcs),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	service.head = &head{root: params.BeaconConfig().ZeroHash}
 	b := util.NewBeaconBlock()
@@ -478,15 +477,10 @@ func TestService_IsOptimisticForRoot_DB(t *testing.T) {
 	validatedCheckpoint := &ethpb.Checkpoint{Root: br[:]}
 	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, validatedCheckpoint))
 
-	_, err = c.IsOptimisticForRoot(ctx, optimisticRoot)
-	require.ErrorContains(t, "nil summary returned from the DB", err)
-
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: optimisticRoot[:], Slot: 11}))
 	optimistic, err := c.IsOptimisticForRoot(ctx, optimisticRoot)
 	require.NoError(t, err)
 	require.Equal(t, true, optimistic)
 
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: validatedRoot[:], Slot: 9}))
 	cp := &ethpb.Checkpoint{
 		Epoch: 1,
 		Root:  validatedRoot[:],
@@ -548,6 +542,25 @@ func TestService_IsOptimisticForRoot_DB_non_canonical(t *testing.T) {
 
 }
 
+func TestService_IsOptimisticForRoot_StateSummaryRecovered(t *testing.T) {
+	beaconDB := testDB.SetupDB(t)
+	ctx := context.Background()
+	c := &Service{cfg: &config{BeaconDB: beaconDB, ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	c.head = &head{root: params.BeaconConfig().ZeroHash}
+	b := util.NewBeaconBlock()
+	b.Block.Slot = 10
+	br, err := b.Block.HashTreeRoot()
+	require.NoError(t, err)
+	util.SaveBlock(t, context.Background(), beaconDB, b)
+	_, err = c.IsOptimisticForRoot(ctx, br)
+	assert.NoError(t, err)
+	summ, err := beaconDB.StateSummary(ctx, br)
+	assert.NoError(t, err)
+	assert.NotNil(t, summ)
+	assert.Equal(t, 10, int(summ.Slot))
+	assert.DeepEqual(t, br[:], summ.Root)
+}
+
 func TestService_IsFinalized(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
 	ctx := context.Background()

beacon-chain/blockchain/error.go

@@ -15,8 +15,8 @@ var (
 	errNilFinalizedCheckpoint = errors.New("nil finalized checkpoint returned from state")
 	// errNilJustifiedCheckpoint is returned when a nil justified checkpt is returned from a state.
 	errNilJustifiedCheckpoint = errors.New("nil justified checkpoint returned from state")
-	// errInvalidNilSummary is returned when a nil summary is returned from the DB.
-	errInvalidNilSummary = errors.New("nil summary returned from the DB")
+	// errBlockDoesNotExist is returned when a block does not exist for a particular state summary.
+	errBlockDoesNotExist = errors.New("could not find block in DB")
 	// errWrongBlockCount is returned when the wrong number of blocks or block roots is used
 	errWrongBlockCount = errors.New("wrong number of blocks or block roots")
 	// errBlockNotFoundInCacheOrDB is returned when a block is not found in the cache or DB.
@@ -25,8 +25,11 @@ var (
 	errWSBlockNotFound = errors.New("weak subjectivity root not found in db")
 	// errWSBlockNotFoundInEpoch is returned when a block is not found in the WS cache or DB within epoch.
 	errWSBlockNotFoundInEpoch = errors.New("weak subjectivity root not found in db within epoch")
-	// errNotDescendantOfFinalized is returned when a block is not a descendant of the finalized checkpoint
+	// ErrNotDescendantOfFinalized is returned when a block is not a descendant of the finalized checkpoint
 	ErrNotDescendantOfFinalized = invalidBlock{error: errors.New("not descendant of finalized checkpoint")}
+	// ErrNotCheckpoint is returned when a given checkpoint is not a
+	// checkpoint in any chain known to forkchoice
+	ErrNotCheckpoint = errors.New("not a checkpoint in forkchoice")
 )
 
 // An invalid block is the block that fails state transition based on the core protocol rules.

beacon-chain/blockchain/execution_engine.go

@@ -12,6 +12,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db/kv"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/execution"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v4/config/features"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
@@ -61,7 +62,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *notifyForkcho
 		return nil, nil
 	}
 	finalizedHash := s.cfg.ForkChoiceStore.FinalizedPayloadBlockHash()
-	justifiedHash := s.cfg.ForkChoiceStore.JustifiedPayloadBlockHash()
+	justifiedHash := s.cfg.ForkChoiceStore.UnrealizedJustifiedPayloadBlockHash()
 	fcs := &enginev1.ForkchoiceState{
 		HeadBlockHash:      headPayload.BlockHash(),
 		SafeBlockHash:      justifiedHash[:],
@@ -69,7 +70,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *notifyForkcho
 	}
 
 	nextSlot := s.CurrentSlot() + 1 // Cache payload ID for next slot proposer.
-	hasAttr, attr, proposerId := s.getPayloadAttribute(ctx, arg.headState, nextSlot)
+	hasAttr, attr, proposerId := s.getPayloadAttribute(ctx, arg.headState, nextSlot, arg.headRoot[:])
 
 	payloadID, lastValidHash, err := s.cfg.ExecutionEngineCaller.ForkchoiceUpdated(ctx, fcs, attr)
 	if err != nil {
@@ -250,20 +251,23 @@ func (s *Service) notifyNewPayload(ctx context.Context, postStateVersion int,
 
 // getPayloadAttributes returns the payload attributes for the given state and slot.
 // The attribute is required to initiate a payload build process in the context of an `engine_forkchoiceUpdated` call.
-func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState, slot primitives.Slot) (bool, payloadattribute.Attributer, primitives.ValidatorIndex) {
+func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState, slot primitives.Slot, headRoot []byte) (bool, payloadattribute.Attributer, primitives.ValidatorIndex) {
 	emptyAttri := payloadattribute.EmptyWithVersion(st.Version())
 	// Root is `[32]byte{}` since we are retrieving proposer ID of a given slot. During insertion at assignment the root was not known.
 	proposerID, _, ok := s.cfg.ProposerSlotIndexCache.GetProposerPayloadIDs(slot, [32]byte{} /* root */)
-	if !ok { // There's no need to build attribute if there is no proposer for slot.
+	if !ok && !features.Get().PrepareAllPayloads { // There's no need to build attribute if there is no proposer for slot.
 		return false, emptyAttri, 0
 	}
 
 	// Get previous randao.
 	st = st.Copy()
-	st, err := transition.ProcessSlotsIfPossible(ctx, st, slot)
-	if err != nil {
-		log.WithError(err).Error("Could not process slots to get payload attribute")
-		return false, emptyAttri, 0
+	if slot > st.Slot() {
+		var err error
+		st, err = transition.ProcessSlotsUsingNextSlotCache(ctx, st, headRoot, slot)
+		if err != nil {
+			log.WithError(err).Error("Could not process slots to get payload attribute")
+			return false, emptyAttri, 0
+		}
 	}
 	prevRando, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
 	if err != nil {

beacon-chain/blockchain/execution_engine_test.go

@@ -9,14 +9,12 @@ import (
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
-	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/execution"
 	mockExecution "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
 	bstate "github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v4/beacon-chain/state/state-native"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
+	"github.com/prysmaticlabs/prysm/v4/config/features"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
@@ -32,23 +30,16 @@ import (
 )
 
 func Test_NotifyForkchoiceUpdate_GetPayloadAttrErrorCanContinue(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
+
 	altairBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockAltair())
 	altairBlkRoot, err := altairBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
 	bellatrixBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockBellatrix())
 	bellatrixBlkRoot, err := bellatrixBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+
 	st, _ := util.DeterministicGenesisState(t, 10)
 	service.head = &head{
 		state: st,
@@ -95,23 +86,15 @@ func Test_NotifyForkchoiceUpdate_GetPayloadAttrErrorCanContinue(t *testing.T) {
 }
 
 func Test_NotifyForkchoiceUpdate(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
+
 	altairBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockAltair())
 	altairBlkRoot, err := altairBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
 	bellatrixBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockBellatrix())
 	bellatrixBlkRoot, err := bellatrixBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisState(t, 10)
 	service.head = &head{
 		state: st,
@@ -263,8 +246,8 @@ func Test_NotifyForkchoiceUpdate(t *testing.T) {
 }
 
 func Test_NotifyForkchoiceUpdate_NIlLVH(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
 	// Prepare blocks
 	ba := util.NewBeaconBlockBellatrix()
@@ -296,12 +279,6 @@ func Test_NotifyForkchoiceUpdate_NIlLVH(t *testing.T) {
 	brd, err := wbd.Block().HashTreeRoot()
 	require.NoError(t, err)
 
-	// Insert blocks into forkchoice
-	service := setupBeaconChain(t, beaconDB)
-	fcs := doublylinkedtree.New()
-	service.cfg.ForkChoiceStore = fcs
-	service.cfg.ProposerSlotIndexCache = cache.NewProposerPayloadIDsCache()
-
 	fcs.SetBalancesByRooter(func(context.Context, [32]byte) ([]uint64, error) { return []uint64{50, 100, 200}, nil })
 	require.NoError(t, fcs.UpdateJustifiedCheckpoint(ctx, &forkchoicetypes.Checkpoint{}))
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
@@ -357,8 +334,8 @@ func Test_NotifyForkchoiceUpdate_NIlLVH(t *testing.T) {
 // 3. the blockchain package calls fcu to obtain heads G -> F -> D.
 
 func Test_NotifyForkchoiceUpdateRecursive_DoublyLinkedTree(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
 	// Prepare blocks
 	ba := util.NewBeaconBlockBellatrix()
@@ -413,12 +390,6 @@ func Test_NotifyForkchoiceUpdateRecursive_DoublyLinkedTree(t *testing.T) {
 	brg, err := wbg.Block().HashTreeRoot()
 	require.NoError(t, err)
 
-	// Insert blocks into forkchoice
-	service := setupBeaconChain(t, beaconDB)
-	fcs := doublylinkedtree.New()
-	service.cfg.ForkChoiceStore = fcs
-	service.cfg.ProposerSlotIndexCache = cache.NewProposerPayloadIDsCache()
-
 	fcs.SetBalancesByRooter(func(context.Context, [32]byte) ([]uint64, error) { return []uint64{50, 100, 200}, nil })
 	require.NoError(t, fcs.UpdateJustifiedCheckpoint(ctx, &forkchoicetypes.Checkpoint{}))
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
@@ -496,15 +467,9 @@ func Test_NotifyNewPayload(t *testing.T) {
 	cfg := params.BeaconConfig()
 	cfg.TerminalTotalDifficulty = "2"
 	params.OverrideBeaconConfig(cfg)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx, fcs := tr.ctx, tr.fcs
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
 	phase0State, _ := util.DeterministicGenesisState(t, 1)
 	altairState, _ := util.DeterministicGenesisStateAltair(t, 1)
 	bellatrixState, _ := util.DeterministicGenesisStateBellatrix(t, 2)
@@ -535,8 +500,6 @@ func Test_NotifyNewPayload(t *testing.T) {
 	}
 	bellatrixBlk, err := consensusblocks.NewSignedBeaconBlock(util.HydrateSignedBeaconBlockBellatrix(blk))
 	require.NoError(t, err)
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	service.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
 	r, err := bellatrixBlk.Block().HashTreeRoot()
@@ -743,14 +706,10 @@ func Test_NotifyNewPayload_SetOptimisticToValid(t *testing.T) {
 	cfg := params.BeaconConfig()
 	cfg.TerminalTotalDifficulty = "2"
 	params.OverrideBeaconConfig(cfg)
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
+
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
+
 	bellatrixState, _ := util.DeterministicGenesisStateBellatrix(t, 2)
 	blk := &ethpb.SignedBeaconBlockBellatrix{
 		Block: &ethpb.BeaconBlockBellatrix{
@@ -763,8 +722,6 @@ func Test_NotifyNewPayload_SetOptimisticToValid(t *testing.T) {
 	}
 	bellatrixBlk, err := consensusblocks.NewSignedBeaconBlock(blk)
 	require.NoError(t, err)
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	e := &mockExecution.EngineClient{BlockByHashMap: map[[32]byte]*v1.ExecutionBlock{}}
 	e.BlockByHashMap[[32]byte{'a'}] = &v1.ExecutionBlock{
 		Header: gethtypes.Header{
@@ -787,19 +744,11 @@ func Test_NotifyNewPayload_SetOptimisticToValid(t *testing.T) {
 }
 
 func Test_GetPayloadAttribute(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
 
-	// Cache miss
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisStateBellatrix(t, 1)
-	hasPayload, _, vId := service.getPayloadAttribute(ctx, st, 0)
+	hasPayload, _, vId := service.getPayloadAttribute(ctx, st, 0, []byte{})
 	require.Equal(t, false, hasPayload)
 	require.Equal(t, primitives.ValidatorIndex(0), vId)
 
@@ -808,7 +757,7 @@ func Test_GetPayloadAttribute(t *testing.T) {
 	slot := primitives.Slot(1)
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
 	hook := logTest.NewGlobal()
-	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, slot)
+	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
 	require.Equal(t, true, hasPayload)
 	require.Equal(t, suggestedVid, vId)
 	require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
@@ -818,26 +767,36 @@ func Test_GetPayloadAttribute(t *testing.T) {
 	suggestedAddr := common.HexToAddress("123")
 	require.NoError(t, service.cfg.BeaconDB.SaveFeeRecipientsByValidatorIDs(ctx, []primitives.ValidatorIndex{suggestedVid}, []common.Address{suggestedAddr}))
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
-	hasPayload, attr, vId = service.getPayloadAttribute(ctx, st, slot)
+	hasPayload, attr, vId = service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
 	require.Equal(t, true, hasPayload)
 	require.Equal(t, suggestedVid, vId)
 	require.Equal(t, suggestedAddr, common.BytesToAddress(attr.SuggestedFeeRecipient()))
 }
 
-func Test_GetPayloadAttributeV2(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
+func Test_GetPayloadAttribute_PrepareAllPayloads(t *testing.T) {
+	hook := logTest.NewGlobal()
+	resetCfg := features.InitWithReset(&features.Flags{
+		PrepareAllPayloads: true,
+	})
+	defer resetCfg()
+
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
+
+	st, _ := util.DeterministicGenesisStateBellatrix(t, 1)
+	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, 0, []byte{})
+	require.Equal(t, true, hasPayload)
+	require.Equal(t, primitives.ValidatorIndex(0), vId)
+	require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
+	require.LogsContain(t, hook, "Fee recipient is currently using the burn address")
+}
+
+func Test_GetPayloadAttributeV2(t *testing.T) {
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
 
-	// Cache miss
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisStateCapella(t, 1)
-	hasPayload, _, vId := service.getPayloadAttribute(ctx, st, 0)
+	hasPayload, _, vId := service.getPayloadAttribute(ctx, st, 0, []byte{})
 	require.Equal(t, false, hasPayload)
 	require.Equal(t, primitives.ValidatorIndex(0), vId)
 
@@ -846,7 +805,7 @@ func Test_GetPayloadAttributeV2(t *testing.T) {
 	slot := primitives.Slot(1)
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
 	hook := logTest.NewGlobal()
-	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, slot)
+	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
 	require.Equal(t, true, hasPayload)
 	require.Equal(t, suggestedVid, vId)
 	require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
@@ -859,7 +818,7 @@ func Test_GetPayloadAttributeV2(t *testing.T) {
 	suggestedAddr := common.HexToAddress("123")
 	require.NoError(t, service.cfg.BeaconDB.SaveFeeRecipientsByValidatorIDs(ctx, []primitives.ValidatorIndex{suggestedVid}, []common.Address{suggestedAddr}))
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
-	hasPayload, attr, vId = service.getPayloadAttribute(ctx, st, slot)
+	hasPayload, attr, vId = service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
 	require.Equal(t, true, hasPayload)
 	require.Equal(t, suggestedVid, vId)
 	require.Equal(t, suggestedAddr, common.BytesToAddress(attr.SuggestedFeeRecipient()))
@@ -871,18 +830,9 @@ func Test_GetPayloadAttributeV2(t *testing.T) {
 func Test_UpdateLastValidatedCheckpoint(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	params.OverrideBeaconConfig(params.MainnetConfig())
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	stateGen := stategen.New(beaconDB, fcs)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stateGen),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	var genesisStateRoot [32]byte
 	genesisBlk := blocks.NewGenesisBlock(genesisStateRoot[:])
 	util.SaveBlock(t, ctx, beaconDB, genesisBlk)
@@ -987,16 +937,8 @@ func Test_UpdateLastValidatedCheckpoint(t *testing.T) {
 }
 
 func TestService_removeInvalidBlockAndState(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	// Deleting unknown block should not error.
 	require.NoError(t, service.removeInvalidBlockAndState(ctx, [][32]byte{{'a'}, {'b'}, {'c'}}))
@@ -1040,18 +982,10 @@ func TestService_removeInvalidBlockAndState(t *testing.T) {
 }
 
 func TestService_getPayloadHash(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
-	_, err = service.getPayloadHash(ctx, []byte{})
+	_, err := service.getPayloadHash(ctx, []byte{})
 	require.ErrorIs(t, errBlockNotFoundInCacheOrDB, err)
 
 	b := util.NewBeaconBlock()

beacon-chain/blockchain/forkchoice_update_execution.go

@@ -14,11 +14,12 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
 )
 
 func (s *Service) isNewProposer(slot primitives.Slot) bool {
 	_, _, ok := s.cfg.ProposerSlotIndexCache.GetProposerPayloadIDs(slot, [32]byte{} /* root */)
-	return ok
+	return ok || features.Get().PrepareAllPayloads
 }
 
 func (s *Service) isNewHead(r [32]byte) bool {
@@ -49,21 +50,27 @@ func (s *Service) getStateAndBlock(ctx context.Context, r [32]byte) (state.Beaco
 }
 
 // fockchoiceUpdateWithExecution is a wrapper around notifyForkchoiceUpdate. It decides whether a new call to FCU should be made.
-func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, newHeadRoot [32]byte, proposingSlot primitives.Slot) error {
+// it returns true if the new head is updated
+func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, newHeadRoot [32]byte, proposingSlot primitives.Slot) (bool, error) {
+	_, span := trace.StartSpan(ctx, "beacon-chain.blockchain.forkchoiceUpdateWithExecution")
+	defer span.End()
+	// Note: Use the service context here to avoid the parent context being ended during a forkchoice update.
+	ctx = trace.NewContext(s.ctx, span)
+
 	isNewHead := s.isNewHead(newHeadRoot)
 	if !isNewHead {
-		return nil
+		return false, nil
 	}
 	isNewProposer := s.isNewProposer(proposingSlot)
 	if isNewProposer && !features.Get().DisableReorgLateBlocks {
 		if s.shouldOverrideFCU(newHeadRoot, proposingSlot) {
-			return nil
+			return false, nil
 		}
 	}
 	headState, headBlock, err := s.getStateAndBlock(ctx, newHeadRoot)
 	if err != nil {
 		log.WithError(err).Error("Could not get forkchoice update argument")
-		return nil
+		return false, nil
 	}
 
 	_, err = s.notifyForkchoiceUpdate(ctx, &notifyForkchoiceUpdateArg{
@@ -72,7 +79,7 @@ func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, newHeadRoot
 		headBlock: headBlock.Block(),
 	})
 	if err != nil {
-		return errors.Wrap(err, "could not notify forkchoice update")
+		return false, errors.Wrap(err, "could not notify forkchoice update")
 	}
 
 	if err := s.saveHead(ctx, newHeadRoot, headBlock, headState); err != nil {
@@ -83,7 +90,7 @@ func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, newHeadRoot
 	if err := s.pruneAttsFromPool(headBlock); err != nil {
 		log.WithError(err).Error("could not prune attestations from pool")
 	}
-	return nil
+	return true, nil
 }
 
 // shouldOverrideFCU checks whether the incoming block is still subject to being

beacon-chain/blockchain/forkchoice_update_execution_test.go

@@ -8,8 +8,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
 	mockExecution "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
@@ -76,7 +74,8 @@ func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
 	service.cfg.ProposerSlotIndexCache = cache.NewProposerPayloadIDsCache()
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, service.headRoot(), service.CurrentSlot()+1))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, service.headRoot(), service.CurrentSlot()+1)
+	require.NoError(t, err)
 	hookErr := "could not notify forkchoice update"
 	invalidStateErr := "could not get state summary: could not find block in DB"
 	require.LogsDoNotContain(t, hook, invalidStateErr)
@@ -84,7 +83,8 @@ func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
 	gb, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	require.NoError(t, service.saveInitSyncBlock(ctx, [32]byte{'a'}, gb))
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, [32]byte{'a'}, service.CurrentSlot()+1))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, [32]byte{'a'}, service.CurrentSlot()+1)
+	require.NoError(t, err)
 	require.LogsContain(t, hook, invalidStateErr)
 
 	hook.Reset()
@@ -108,7 +108,8 @@ func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
 		state: st,
 	}
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(2, 1, [8]byte{1}, [32]byte{2})
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, r1, service.CurrentSlot()))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, r1, service.CurrentSlot())
+	require.NoError(t, err)
 	require.LogsDoNotContain(t, hook, invalidStateErr)
 	require.LogsDoNotContain(t, hook, hookErr)
 
@@ -125,7 +126,8 @@ func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
 		state: st,
 	}
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(2, 1, [8]byte{1}, [32]byte{2})
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, r1, service.CurrentSlot()+1))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, r1, service.CurrentSlot()+1)
+	require.NoError(t, err)
 	require.LogsDoNotContain(t, hook, invalidStateErr)
 	require.LogsDoNotContain(t, hook, hookErr)
 	vId, payloadID, has := service.cfg.ProposerSlotIndexCache.GetProposerPayloadIDs(2, [32]byte{2})
@@ -135,28 +137,21 @@ func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
 
 	// Test zero headRoot returns immediately.
 	headRoot := service.headRoot()
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, [32]byte{}, service.CurrentSlot()+1))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, [32]byte{}, service.CurrentSlot()+1)
+	require.NoError(t, err)
 	require.Equal(t, service.headRoot(), headRoot)
 }
 
 func TestService_forkchoiceUpdateWithExecution_SameHeadRootNewProposer(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
+
 	altairBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockAltair())
 	altairBlkRoot, err := altairBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
 	bellatrixBlk := util.SaveBlock(t, ctx, beaconDB, util.NewBeaconBlockBellatrix())
 	bellatrixBlkRoot, err := bellatrixBlk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisState(t, 10)
 	service.head = &head{
 		state: st,
@@ -188,24 +183,17 @@ func TestService_forkchoiceUpdateWithExecution_SameHeadRootNewProposer(t *testin
 	service.head.block = sb
 	service.head.state = st
 	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(service.CurrentSlot()+1, 0, [8]byte{}, [32]byte{} /* root */)
-	require.NoError(t, service.forkchoiceUpdateWithExecution(ctx, r, service.CurrentSlot()+1))
+	_, err = service.forkchoiceUpdateWithExecution(ctx, r, service.CurrentSlot()+1)
+	require.NoError(t, err)
 
 }
 
 func TestShouldOverrideFCU(t *testing.T) {
 	hook := logTest.NewGlobal()
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
+
 	service.SetGenesisTime(time.Now().Add(-time.Duration(2*params.BeaconConfig().SecondsPerSlot) * time.Second))
-	require.NoError(t, err)
 	headRoot := [32]byte{'b'}
 	parentRoot := [32]byte{'a'}
 	ojc := &ethpb.Checkpoint{}

beacon-chain/blockchain/head.go

@@ -54,7 +54,7 @@ type head struct {
 
 // This saves head info to the local service cache, it also saves the
 // new head root to the DB.
-// Caller of the method MUST aqcuire a lock on forkchoice.
+// Caller of the method MUST acquire a lock on forkchoice.
 func (s *Service) saveHead(ctx context.Context, newHeadRoot [32]byte, headBlock interfaces.ReadOnlySignedBeaconBlock, headState state.BeaconState) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.saveHead")
 	defer span.End()
@@ -89,13 +89,13 @@ func (s *Service) saveHead(ctx context.Context, newHeadRoot [32]byte, headBlock
 	newHeadSlot := headBlock.Block().Slot()
 	newStateRoot := headBlock.Block().StateRoot()
 
-	// A chain re-org occurred, so we fire an event notifying the rest of the services.
 	r, err := s.HeadRoot(ctx)
 	if err != nil {
 		return errors.Wrap(err, "could not get old head root")
 	}
 	oldHeadRoot := bytesutil.ToBytes32(r)
 	if headBlock.Block().ParentRoot() != oldHeadRoot {
+		// A chain re-org occurred, so we fire an event notifying the rest of the services.
 		commonRoot, forkSlot, err := s.cfg.ForkChoiceStore.CommonAncestor(ctx, oldHeadRoot, newHeadRoot)
 		if err != nil {
 			log.WithError(err).Error("Could not find common ancestor root")
@@ -403,6 +403,19 @@ func (s *Service) saveOrphanedOperations(ctx context.Context, orphanedRoot [32]b
 			}
 			saveOrphanedAttCount.Inc()
 		}
+		for _, as := range orphanedBlk.Block().Body().AttesterSlashings() {
+			if err := s.cfg.SlashingPool.InsertAttesterSlashing(ctx, s.headStateReadOnly(ctx), as); err != nil {
+				log.WithError(err).Error("Could not insert reorg attester slashing")
+			}
+		}
+		for _, vs := range orphanedBlk.Block().Body().ProposerSlashings() {
+			if err := s.cfg.SlashingPool.InsertProposerSlashing(ctx, s.headStateReadOnly(ctx), vs); err != nil {
+				log.WithError(err).Error("Could not insert reorg proposer slashing")
+			}
+		}
+		for _, v := range orphanedBlk.Block().Body().VoluntaryExits() {
+			s.cfg.ExitPool.InsertVoluntaryExit(v)
+		}
 		if orphanedBlk.Version() >= version.Capella {
 			changes, err := orphanedBlk.Block().Body().BLSToExecutionChanges()
 			if err != nil {

beacon-chain/blockchain/head_sync_committee_info.go

@@ -53,7 +53,7 @@ func (s *Service) HeadSyncContributionProofDomain(ctx context.Context, slot prim
 
 // HeadSyncCommitteeIndices returns the sync committee index position using the head state. Input `slot` is taken in consideration
 // where validator's duty for `slot - 1` is used for block inclusion in `slot`. That means when a validator is at epoch boundary
-// across EPOCHS_PER_SYNC_COMMITTEE_PERIOD then the valiator will be considered using next period sync committee.
+// across EPOCHS_PER_SYNC_COMMITTEE_PERIOD then the validator will be considered using next period sync committee.
 //
 // Spec definition:
 // Being assigned to a sync committee for a given slot means that the validator produces and broadcasts signatures for slot - 1 for inclusion in slot.

beacon-chain/blockchain/head_test.go

@@ -9,10 +9,8 @@ import (
 
 	mock "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
 	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/blstoexec"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
@@ -326,6 +324,88 @@ func TestSaveOrphanedAtts(t *testing.T) {
 	require.DeepEqual(t, wantAtts, atts)
 }
 
+func TestSaveOrphanedOps(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	config := params.BeaconConfig()
+	config.ShardCommitteePeriod = 0
+	params.OverrideBeaconConfig(config)
+
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	service := setupBeaconChain(t, beaconDB)
+	service.genesisTime = time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
+
+	// Chain setup
+	// 0 -- 1 -- 2 -- 3
+	//  \-4
+	st, keys := util.DeterministicGenesisState(t, 64)
+	service.head = &head{state: st}
+	blkG, err := util.GenerateFullBlock(st, keys, util.DefaultBlockGenConfig(), 0)
+	assert.NoError(t, err)
+
+	util.SaveBlock(t, ctx, service.cfg.BeaconDB, blkG)
+	rG, err := blkG.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	blk1, err := util.GenerateFullBlock(st, keys, util.DefaultBlockGenConfig(), 1)
+	assert.NoError(t, err)
+	blk1.Block.ParentRoot = rG[:]
+	r1, err := blk1.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	blk2, err := util.GenerateFullBlock(st, keys, util.DefaultBlockGenConfig(), 2)
+	assert.NoError(t, err)
+	blk2.Block.ParentRoot = r1[:]
+	r2, err := blk2.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	blkConfig := util.DefaultBlockGenConfig()
+	blkConfig.NumBLSChanges = 5
+	blkConfig.NumProposerSlashings = 1
+	blkConfig.NumAttesterSlashings = 1
+	blkConfig.NumVoluntaryExits = 1
+	blk3, err := util.GenerateFullBlock(st, keys, blkConfig, 3)
+	assert.NoError(t, err)
+	blk3.Block.ParentRoot = r2[:]
+	r3, err := blk3.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	blk4 := util.NewBeaconBlock()
+	blk4.Block.Slot = 4
+	blk4.Block.ParentRoot = rG[:]
+	r4, err := blk4.Block.HashTreeRoot()
+	require.NoError(t, err)
+	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
+
+	for _, blk := range []*ethpb.SignedBeaconBlock{blkG, blk1, blk2, blk3, blk4} {
+		r, err := blk.Block.HashTreeRoot()
+		require.NoError(t, err)
+		state, blkRoot, err := prepareForkchoiceState(ctx, blk.Block.Slot, r, bytesutil.ToBytes32(blk.Block.ParentRoot), [32]byte{}, ojc, ofc)
+		require.NoError(t, err)
+		require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, state, blkRoot))
+		util.SaveBlock(t, ctx, beaconDB, blk)
+	}
+
+	require.NoError(t, service.saveOrphanedOperations(ctx, r3, r4))
+	require.Equal(t, 3, service.cfg.AttPool.AggregatedAttestationCount())
+	wantAtts := []*ethpb.Attestation{
+		blk3.Block.Body.Attestations[0],
+		blk2.Block.Body.Attestations[0],
+		blk1.Block.Body.Attestations[0],
+	}
+	atts := service.cfg.AttPool.AggregatedAttestations()
+	sort.Slice(atts, func(i, j int) bool {
+		return atts[i].Data.Slot > atts[j].Data.Slot
+	})
+	require.DeepEqual(t, wantAtts, atts)
+	require.Equal(t, 1, len(service.cfg.SlashingPool.PendingProposerSlashings(ctx, st, false)))
+	require.Equal(t, 1, len(service.cfg.SlashingPool.PendingAttesterSlashings(ctx, st, false)))
+	exits, err := service.cfg.ExitPool.PendingExits()
+	require.NoError(t, err)
+	require.Equal(t, 1, len(exits))
+}
+
 func TestSaveOrphanedAtts_CanFilter(t *testing.T) {
 	ctx := context.Background()
 	beaconDB := testDB.SetupDB(t)
@@ -499,18 +579,9 @@ func TestSaveOrphanedAtts_CanFilter_DoublyLinkedTrie(t *testing.T) {
 }
 
 func TestUpdateHead_noSavedChanges(t *testing.T) {
-	ctx := context.Background()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	ojp := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, [32]byte{}, ojp, ojp)
 	require.NoError(t, err)

beacon-chain/blockchain/log.go

@@ -8,7 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
-	consensusBlocks "github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
+	consensus_types "github.com/prysmaticlabs/prysm/v4/consensus-types"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
@@ -53,14 +53,13 @@ func logStateTransitionData(b interfaces.ReadOnlyBeaconBlock) error {
 		log = log.WithField("payloadHash", fmt.Sprintf("%#x", bytesutil.Trunc(p.BlockHash())))
 		txs, err := p.Transactions()
 		switch {
-		case errors.Is(err, consensusBlocks.ErrUnsupportedGetter):
+		case errors.Is(err, consensus_types.ErrUnsupportedGetter):
 		case err != nil:
 			return err
 		default:
 			log = log.WithField("txCount", len(txs))
 			txsPerSlotCount.Set(float64(len(txs)))
 		}
-
 	}
 	log.Info("Finished applying state transition")
 	return nil

beacon-chain/blockchain/mock_test.go

@@ -5,16 +5,19 @@ import (
 
 	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/startup"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 )
 
 func testServiceOptsWithDB(t *testing.T) []Option {
 	beaconDB := testDB.SetupDB(t)
 	fcs := doublylinkedtree.New()
+	cs := startup.NewClockSynchronizer()
 	return []Option{
 		WithDatabase(beaconDB),
 		WithStateGen(stategen.New(beaconDB, fcs)),
 		WithForkChoiceStore(fcs),
+		WithClockSynchronizer(cs),
 	}
 }
 
@@ -22,5 +25,6 @@ func testServiceOptsWithDB(t *testing.T) []Option {
 // in your code path. this is a lightweight way to satisfy the stategen/beacondb
 // initialization requirements w/o the overhead of db init.
 func testServiceOptsNoDB() []Option {
-	return []Option{}
+	cs := startup.NewClockSynchronizer()
+	return []Option{WithClockSynchronizer(cs)}
 }

beacon-chain/blockchain/options.go

@@ -13,6 +13,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/slashings"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/voluntaryexits"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/startup"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
@@ -163,3 +164,11 @@ func WithFinalizedStateAtStartUp(st state.BeaconState) Option {
 		return nil
 	}
 }
+
+func WithClockSynchronizer(gs *startup.ClockSynchronizer) Option {
+	return func(s *Service) error {
+		s.clockSetter = gs
+		s.clockWaiter = gs
+		return nil
+	}
+}

beacon-chain/blockchain/pow_block_test.go

@@ -1,17 +1,13 @@
 package blockchain
 
 import (
-	"context"
 	"fmt"
 	"math/big"
 	"testing"
 
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
 	"github.com/holiman/uint256"
-	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
 	mocks "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
@@ -108,16 +104,8 @@ func Test_validateMergeBlock(t *testing.T) {
 	cfg.TerminalTotalDifficulty = "2"
 	params.OverrideBeaconConfig(cfg)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	engine := &mocks.EngineClient{BlockByHashMap: map[[32]byte]*enginev1.ExecutionBlock{}}
 	service.cfg.ExecutionEngineCaller = engine
@@ -158,16 +146,8 @@ func Test_validateMergeBlock(t *testing.T) {
 }
 
 func Test_getBlkParentHashAndTD(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	engine := &mocks.EngineClient{BlockByHashMap: map[[32]byte]*enginev1.ExecutionBlock{}}
 	service.cfg.ExecutionEngineCaller = engine
@@ -239,14 +219,9 @@ func Test_validateTerminalBlockHash(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, true, ok)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
+
 	blk, err := blocks.NewSignedBeaconBlock(util.HydrateSignedBeaconBlockBellatrix(&ethpb.SignedBeaconBlockBellatrix{}))
 	require.NoError(t, err)
 	blk.SetSlot(1)

beacon-chain/blockchain/process_attestation_helpers.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/async"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
+	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
@@ -18,7 +19,17 @@ import (
 )
 
 // getAttPreState retrieves the att pre state by either from the cache or the DB.
-func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (state.BeaconState, error) {
+func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (state.ReadOnlyBeaconState, error) {
+	// If the attestation is recent and canonical we can use the head state to compute the shuffling.
+	headEpoch := slots.ToEpoch(s.HeadSlot())
+	if c.Epoch == headEpoch {
+		targetSlot, err := s.cfg.ForkChoiceStore.Slot([32]byte(c.Root))
+		if err == nil && slots.ToEpoch(targetSlot)+1 >= headEpoch {
+			if s.cfg.ForkChoiceStore.IsCanonical([32]byte(c.Root)) {
+				return s.HeadStateReadOnly(ctx)
+			}
+		}
+	}
 	// Use a multilock to allow scoped holding of a mutex by a checkpoint root + epoch
 	// allowing us to behave smarter in terms of how this function is used concurrently.
 	epochKey := strconv.FormatUint(uint64(c.Epoch), 10 /* base 10 */)
@@ -32,7 +43,36 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (stat
 	if cachedState != nil && !cachedState.IsNil() {
 		return cachedState, nil
 	}
+	// Try the next slot cache for the early epoch calls, this should mostly have been covered already
+	// but is cheap
+	slot, err := slots.EpochStart(c.Epoch)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not compute epoch start")
+	}
+	cachedState = transition.NextSlotState(c.Root, slot)
+	if cachedState != nil && !cachedState.IsNil() {
+		if cachedState.Slot() != slot {
+			cachedState, err = transition.ProcessSlots(ctx, cachedState, slot)
+			if err != nil {
+				return nil, errors.Wrap(err, "could not process slots")
+			}
+		}
+		if err := s.checkpointStateCache.AddCheckpointState(c, cachedState); err != nil {
+			return nil, errors.Wrap(err, "could not save checkpoint state to cache")
+		}
+		return cachedState, nil
+	}
 
+	// Do not process attestations for old non viable checkpoints otherwise
+	ok, err := s.cfg.ForkChoiceStore.IsViableForCheckpoint(&forkchoicetypes.Checkpoint{Root: [32]byte(c.Root), Epoch: c.Epoch})
+	if err != nil {
+		return nil, errors.Wrap(err, "could not check checkpoint condition in forkchoice")
+	}
+	if !ok {
+		return nil, ErrNotCheckpoint
+	}
+
+	// Fallback to state regeneration.
 	baseState, err := s.cfg.StateGen.StateByRoot(ctx, bytesutil.ToBytes32(c.Root))
 	if err != nil {
 		return nil, errors.Wrapf(err, "could not get pre state for epoch %d", c.Epoch)
@@ -55,7 +95,6 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (stat
 		return nil, errors.Wrap(err, "could not save checkpoint state to cache")
 	}
 	return baseState, nil
-
 }
 
 // verifyAttTargetEpoch validates attestation is from the current or previous epoch.

beacon-chain/blockchain/process_attestation_test.go

@@ -6,9 +6,6 @@ import (
 	"time"
 
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
-	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
@@ -21,29 +18,29 @@ import (
 )
 
 func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fc),
-		WithStateGen(stategen.New(beaconDB, fc)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-
-	_, err = blockTree1(t, beaconDB, []byte{'g'})
+	_, err := blockTree1(t, beaconDB, []byte{'g'})
 	require.NoError(t, err)
 
 	blkWithoutState := util.NewBeaconBlock()
 	blkWithoutState.Block.Slot = 0
 	util.SaveBlock(t, ctx, beaconDB, blkWithoutState)
-	BlkWithOutStateRoot, err := blkWithoutState.Block.HashTreeRoot()
+
+	cp := &ethpb.Checkpoint{}
+	st, blkRoot, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
 	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 
 	blkWithStateBadAtt := util.NewBeaconBlock()
 	blkWithStateBadAtt.Block.Slot = 1
+	r, err := blkWithStateBadAtt.Block.HashTreeRoot()
+	require.NoError(t, err)
+	cp = &ethpb.Checkpoint{Root: r[:]}
+	st, blkRoot, err = prepareForkchoiceState(ctx, blkWithStateBadAtt.Block.Slot, r, [32]byte{}, params.BeaconConfig().ZeroHash, cp, cp)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
 	util.SaveBlock(t, ctx, beaconDB, blkWithStateBadAtt)
 	BlkWithStateBadAttRoot, err := blkWithStateBadAtt.Block.HashTreeRoot()
 	require.NoError(t, err)
@@ -54,7 +51,7 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, BlkWithStateBadAttRoot))
 
 	blkWithValidState := util.NewBeaconBlock()
-	blkWithValidState.Block.Slot = 2
+	blkWithValidState.Block.Slot = 32
 	util.SaveBlock(t, ctx, beaconDB, blkWithValidState)
 
 	blkWithValidStateRoot, err := blkWithValidState.Block.HashTreeRoot()
@@ -69,6 +66,10 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 	require.NoError(t, err)
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, blkWithValidStateRoot))
 
+	service.head = &head{
+		state: st,
+	}
+
 	tests := []struct {
 		name      string
 		a         *ethpb.Attestation
@@ -79,11 +80,6 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 			a:         util.HydrateAttestation(&ethpb.Attestation{Data: &ethpb.AttestationData{Slot: params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Root: make([]byte, 32)}}}),
 			wantedErr: "slot 32 does not match target epoch 0",
 		},
-		{
-			name:      "no pre state for attestations's target block",
-			a:         util.HydrateAttestation(&ethpb.Attestation{Data: &ethpb.AttestationData{Target: &ethpb.Checkpoint{Root: BlkWithOutStateRoot[:]}}}),
-			wantedErr: "could not get pre state for epoch 0",
-		},
 		{
 			name: "process attestation doesn't match current epoch",
 			a: util.HydrateAttestation(&ethpb.Attestation{Data: &ethpb.AttestationData{Slot: 100 * params.BeaconConfig().SlotsPerEpoch, Target: &ethpb.Checkpoint{Epoch: 100,
@@ -128,17 +124,9 @@ func TestStore_OnAttestation_ErrorConditions(t *testing.T) {
 }
 
 func TestStore_OnAttestation_Ok_DoublyLinkedTree(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	genesisState, pks := util.DeterministicGenesisState(t, 64)
 	service.SetGenesisTime(time.Unix(time.Now().Unix()-int64(params.BeaconConfig().SecondsPerSlot), 0))
 	require.NoError(t, service.saveGenesisData(ctx, genesisState))
@@ -158,15 +146,8 @@ func TestStore_OnAttestation_Ok_DoublyLinkedTree(t *testing.T) {
 }
 
 func TestStore_SaveCheckpointState(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
@@ -187,6 +168,9 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, bytesutil.ToBytes32([]byte{'A'})))
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Root: bytesutil.PadTo([]byte{'A'}, fieldparams.RootLength)}))
 
+	st, root, err := prepareForkchoiceState(ctx, 1, [32]byte(cp1.Root), [32]byte{}, [32]byte{'R'}, cp1, cp1)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, root))
 	s1, err := service.getAttPreState(ctx, cp1)
 	require.NoError(t, err)
 	assert.Equal(t, 1*params.BeaconConfig().SlotsPerEpoch, s1.Slot(), "Unexpected state slot")
@@ -194,8 +178,17 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	cp2 := &ethpb.Checkpoint{Epoch: 2, Root: bytesutil.PadTo([]byte{'B'}, fieldparams.RootLength)}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, bytesutil.ToBytes32([]byte{'B'})))
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Root: bytesutil.PadTo([]byte{'B'}, fieldparams.RootLength)}))
+
 	s2, err := service.getAttPreState(ctx, cp2)
+	require.ErrorIs(t, ErrNotCheckpoint, err)
+
+	st, root, err = prepareForkchoiceState(ctx, 33, [32]byte(cp2.Root), [32]byte(cp1.Root), [32]byte{'R'}, cp2, cp2)
 	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, root))
+
+	s2, err = service.getAttPreState(ctx, cp2)
+	require.NoError(t, err)
+
 	assert.Equal(t, 2*params.BeaconConfig().SlotsPerEpoch, s2.Slot(), "Unexpected state slot")
 
 	s1, err = service.getAttPreState(ctx, cp1)
@@ -214,26 +207,30 @@ func TestStore_SaveCheckpointState(t *testing.T) {
 	cp3 := &ethpb.Checkpoint{Epoch: 1, Root: bytesutil.PadTo([]byte{'C'}, fieldparams.RootLength)}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, s, bytesutil.ToBytes32([]byte{'C'})))
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Root: bytesutil.PadTo([]byte{'C'}, fieldparams.RootLength)}))
+	st, root, err = prepareForkchoiceState(ctx, 31, [32]byte(cp3.Root), [32]byte(cp2.Root), [32]byte{'P'}, cp2, cp2)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, root))
+
 	s3, err := service.getAttPreState(ctx, cp3)
 	require.NoError(t, err)
 	assert.Equal(t, s.Slot(), s3.Slot(), "Unexpected state slot")
 }
 
 func TestStore_UpdateCheckpointState(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
+	baseState, _ := util.DeterministicGenesisState(t, 1)
 
 	epoch := primitives.Epoch(1)
-	baseState, _ := util.DeterministicGenesisState(t, 1)
-	checkpoint := &ethpb.Checkpoint{Epoch: epoch, Root: bytesutil.PadTo([]byte("hi"), fieldparams.RootLength)}
+	blk := util.NewBeaconBlock()
+	r1, err := blk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	checkpoint := &ethpb.Checkpoint{Epoch: epoch, Root: r1[:]}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(checkpoint.Root)))
+	st, blkRoot, err := prepareForkchoiceState(ctx, blk.Block.Slot, r1, [32]byte{}, params.BeaconConfig().ZeroHash, checkpoint, checkpoint)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, r1))
 	returned, err := service.getAttPreState(ctx, checkpoint)
 	require.NoError(t, err)
 	assert.Equal(t, params.BeaconConfig().SlotsPerEpoch.Mul(uint64(checkpoint.Epoch)), returned.Slot(), "Incorrectly returned base state")
@@ -243,8 +240,16 @@ func TestStore_UpdateCheckpointState(t *testing.T) {
 	assert.Equal(t, returned.Slot(), cached.Slot(), "State should have been cached")
 
 	epoch = 2
-	newCheckpoint := &ethpb.Checkpoint{Epoch: epoch, Root: bytesutil.PadTo([]byte("bye"), fieldparams.RootLength)}
+	blk = util.NewBeaconBlock()
+	blk.Block.Slot = 64
+	r2, err := blk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	newCheckpoint := &ethpb.Checkpoint{Epoch: epoch, Root: r2[:]}
 	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(newCheckpoint.Root)))
+	st, blkRoot, err = prepareForkchoiceState(ctx, blk.Block.Slot, r2, r1, params.BeaconConfig().ZeroHash, newCheckpoint, newCheckpoint)
+	require.NoError(t, err)
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, blkRoot))
+	require.NoError(t, service.cfg.ForkChoiceStore.InsertNode(ctx, st, r2))
 	returned, err = service.getAttPreState(ctx, newCheckpoint)
 	require.NoError(t, err)
 	s, err := slots.EpochStart(newCheckpoint.Epoch)
@@ -323,3 +328,22 @@ func TestVerifyBeaconBlock_OK(t *testing.T) {
 
 	assert.NoError(t, service.verifyBeaconBlock(ctx, d), "Did not receive the wanted error")
 }
+
+func TestGetAttPreState_HeadState(t *testing.T) {
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
+	baseState, _ := util.DeterministicGenesisState(t, 1)
+
+	epoch := primitives.Epoch(1)
+	blk := util.NewBeaconBlock()
+	r1, err := blk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	checkpoint := &ethpb.Checkpoint{Epoch: epoch, Root: r1[:]}
+	require.NoError(t, service.cfg.BeaconDB.SaveState(ctx, baseState, bytesutil.ToBytes32(checkpoint.Root)))
+	require.NoError(t, transition.UpdateNextSlotCache(ctx, checkpoint.Root, baseState))
+	_, err = service.getAttPreState(ctx, checkpoint)
+	require.NoError(t, err)
+	st, err := service.checkpointStateCache.StateByCheckpoint(checkpoint)
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().SlotsPerEpoch, st.Slot())
+}

beacon-chain/blockchain/process_block.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v4/async/event"
 	"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"
@@ -142,6 +141,7 @@ func (s *Service) onBlock(ctx context.Context, signed interfaces.ReadOnlySignedB
 			return err
 		}
 	}
+
 	if err := s.savePostStateInfo(ctx, blockRoot, signed, postState); err != nil {
 		return err
 	}
@@ -208,12 +208,24 @@ func (s *Service) onBlock(ctx context.Context, signed interfaces.ReadOnlySignedB
 			"headRoot":       fmt.Sprintf("%#x", headRoot),
 			"headWeight":     headWeight,
 		}).Debug("Head block is not the received block")
+	} else {
+		// Updating next slot state cache can happen in the background. It shouldn't block rest of the process.
+		go func() {
+			// Use a custom deadline here, since this method runs asynchronously.
+			// We ignore the parent method's context and instead create a new one
+			// with a custom deadline, therefore using the background context instead.
+			slotCtx, cancel := context.WithTimeout(context.Background(), slotDeadline)
+			defer cancel()
+			if err := transition.UpdateNextSlotCache(slotCtx, blockRoot[:], postState); err != nil {
+				log.WithError(err).Debug("could not update next slot state cache")
+			}
+		}()
 	}
 	newBlockHeadElapsedTime.Observe(float64(time.Since(start).Milliseconds()))
 
 	// verify conditions for FCU, notifies FCU, and saves the new head.
 	// This function also prunes attestations, other similar operations happen in prunePostBlockOperationPools.
-	if err := s.forkchoiceUpdateWithExecution(ctx, headRoot, s.CurrentSlot()+1); err != nil {
+	if _, err := s.forkchoiceUpdateWithExecution(ctx, headRoot, s.CurrentSlot()+1); err != nil {
 		return err
 	}
 
@@ -228,18 +240,6 @@ func (s *Service) onBlock(ctx context.Context, signed interfaces.ReadOnlySignedB
 		},
 	})
 
-	// Updating next slot state cache can happen in the background. It shouldn't block rest of the process.
-	go func() {
-		// Use a custom deadline here, since this method runs asynchronously.
-		// We ignore the parent method's context and instead create a new one
-		// with a custom deadline, therefore using the background context instead.
-		slotCtx, cancel := context.WithTimeout(context.Background(), slotDeadline)
-		defer cancel()
-		if err := transition.UpdateNextSlotCache(slotCtx, blockRoot[:], postState); err != nil {
-			log.WithError(err).Debug("could not update next slot state cache")
-		}
-	}()
-
 	// Save justified check point to db.
 	postStateJustifiedEpoch := postState.CurrentJustifiedCheckpoint().Epoch
 	if justified.Epoch > currStoreJustifiedEpoch || (justified.Epoch == postStateJustifiedEpoch && justified.Epoch > preStateJustifiedEpoch) {
@@ -283,7 +283,6 @@ func (s *Service) onBlock(ctx context.Context, signed interfaces.ReadOnlySignedB
 				log.WithError(err).Error("Could not insert finalized deposits.")
 			}
 		}()
-
 	}
 	defer reportAttestationInclusion(b)
 	if err := s.handleEpochBoundary(ctx, postState); err != nil {
@@ -652,30 +651,21 @@ func (s *Service) validateMergeTransitionBlock(ctx context.Context, stateVersion
 
 // This routine checks if there is a cached proposer payload ID available for the next slot proposer.
 // If there is not, it will call forkchoice updated with the correct payload attribute then cache the payload ID.
-func (s *Service) fillMissingPayloadIDRoutine(ctx context.Context, stateFeed *event.Feed) {
-	// Wait for state to be initialized.
-	stateChannel := make(chan *feed.Event, 1)
-	stateSub := stateFeed.Subscribe(stateChannel)
+func (s *Service) spawnLateBlockTasksLoop() {
 	go func() {
-		select {
-		case <-s.ctx.Done():
-			stateSub.Unsubscribe()
+		_, err := s.clockWaiter.WaitForClock(s.ctx)
+		if err != nil {
+			log.WithError(err).Error("spawnLateBlockTasksLoop encountered an error waiting for initialization")
 			return
-		case <-stateChannel:
-			stateSub.Unsubscribe()
-			break
 		}
-
 		attThreshold := params.BeaconConfig().SecondsPerSlot / 3
 		ticker := slots.NewSlotTickerWithOffset(s.genesisTime, time.Duration(attThreshold)*time.Second, params.BeaconConfig().SecondsPerSlot)
 		for {
 			select {
 			case <-ticker.C():
-				if err := s.fillMissingBlockPayloadId(ctx); err != nil {
-					log.WithError(err).Error("Could not fill missing payload ID")
-				}
+				s.lateBlockTasks(s.ctx)
 
-			case <-ctx.Done():
+			case <-s.ctx.Done():
 				log.Debug("Context closed, exiting routine")
 				return
 			}
@@ -683,11 +673,13 @@ func (s *Service) fillMissingPayloadIDRoutine(ctx context.Context, stateFeed *ev
 	}()
 }
 
-// fillMissingBlockPayloadId is called 4 seconds into the slot and calls FCU if we are proposing next slot
-// and the cache has been missed
-func (s *Service) fillMissingBlockPayloadId(ctx context.Context) error {
+// 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
+// it also updates the next slot cache to deal with skipped slots.
+func (s *Service) lateBlockTasks(ctx context.Context) {
 	if s.CurrentSlot() == s.HeadSlot() {
-		return nil
+		return
 	}
 	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
 		Type: statefeed.MissedSlot,
@@ -696,22 +688,32 @@ func (s *Service) fillMissingBlockPayloadId(ctx context.Context) error {
 	// Head root should be empty when retrieving proposer index for the next slot.
 	_, id, has := s.cfg.ProposerSlotIndexCache.GetProposerPayloadIDs(s.CurrentSlot()+1, [32]byte{} /* head root */)
 	// There exists proposer for next slot, but we haven't called fcu w/ payload attribute yet.
-	if !has || id != [8]byte{} {
-		return nil
+	if (!has && !features.Get().PrepareAllPayloads) || id != [8]byte{} {
+		return
 	}
 	s.headLock.RLock()
 	headBlock, err := s.headBlock()
 	if err != nil {
 		s.headLock.RUnlock()
-		return err
+		log.WithError(err).Debug("could not perform late block tasks: failed to retrieve head block")
+		return
 	}
-	headState := s.headState(ctx)
 	headRoot := s.headRoot()
+	headState := s.headState(ctx)
 	s.headLock.RUnlock()
 	_, err = s.notifyForkchoiceUpdate(ctx, &notifyForkchoiceUpdateArg{
 		headState: headState,
 		headRoot:  headRoot,
 		headBlock: headBlock.Block(),
 	})
-	return err
+	if err != nil {
+		log.WithError(err).Debug("could not perform late block tasks: failed to update forkchoice with engine")
+	}
+	lastRoot, lastState := transition.LastCachedState()
+	if lastState == nil {
+		lastRoot, lastState = headRoot[:], headState
+	}
+	if err = transition.UpdateNextSlotCache(ctx, lastRoot, lastState); err != nil {
+		log.WithError(err).Debug("could not update next slot state cache")
+	}
 }

beacon-chain/blockchain/process_block_helpers.go

@@ -64,7 +64,7 @@ func (s *Service) verifyBlkPreState(ctx context.Context, b interfaces.ReadOnlyBe
 	parentRoot := b.ParentRoot()
 	// Loosen the check to HasBlock because state summary gets saved in batches
 	// during initial syncing. There's no risk given a state summary object is just a
-	// a subset of the block object.
+	// subset of the block object.
 	if !s.cfg.BeaconDB.HasStateSummary(ctx, parentRoot) && !s.cfg.BeaconDB.HasBlock(ctx, parentRoot) {
 		return errors.New("could not reconstruct parent state")
 	}
@@ -230,7 +230,9 @@ func (s *Service) insertFinalizedDeposits(ctx context.Context, fRoot [32]byte) e
 	// to be included(rather than the last one to be processed). This was most likely
 	// done as the state cannot represent signed integers.
 	eth1DepositIndex -= 1
-	s.cfg.DepositCache.InsertFinalizedDeposits(ctx, int64(eth1DepositIndex))
+	if err = s.cfg.DepositCache.InsertFinalizedDeposits(ctx, int64(eth1DepositIndex)); err != nil {
+		return err
+	}
 	// Deposit proofs are only used during state transition and can be safely removed to save space.
 	if err = s.cfg.DepositCache.PruneProofs(ctx, int64(eth1DepositIndex)); err != nil {
 		return errors.Wrap(err, "could not prune deposit proofs")

beacon-chain/blockchain/process_block_test.go

@@ -12,9 +12,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
 	"github.com/pkg/errors"
-	mock "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache/depositcache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
@@ -24,9 +22,8 @@ import (
 	mockExecution "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
+	"github.com/prysmaticlabs/prysm/v4/config/features"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
@@ -45,18 +42,9 @@ import (
 )
 
 func TestStore_OnBlock(t *testing.T) {
-	ctx := context.Background()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB, fcs := tr.ctx, tr.db, tr.fcs
 
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	var genesisStateRoot [32]byte
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
 	util.SaveBlock(t, ctx, beaconDB, genesis)
@@ -151,17 +139,8 @@ func TestStore_OnBlock(t *testing.T) {
 }
 
 func TestStore_OnBlockBatch(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, st))
@@ -184,7 +163,7 @@ func TestStore_OnBlockBatch(t *testing.T) {
 		blks = append(blks, wsb)
 		blkRoots = append(blkRoots, root)
 	}
-	err = service.onBlockBatch(ctx, blks, blkRoots[1:])
+	err := service.onBlockBatch(ctx, blks, blkRoots[1:])
 	require.ErrorIs(t, errWrongBlockCount, err)
 	err = service.onBlockBatch(ctx, blks, blkRoots)
 	require.NoError(t, err)
@@ -195,17 +174,9 @@ func TestStore_OnBlockBatch(t *testing.T) {
 }
 
 func TestStore_OnBlockBatch_NotifyNewPayload(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	st, keys := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, st))
 	bState := st.Copy()
@@ -226,22 +197,12 @@ func TestStore_OnBlockBatch_NotifyNewPayload(t *testing.T) {
 		blks = append(blks, wsb)
 		blkRoots = append(blkRoots, root)
 	}
-	err = service.onBlockBatch(ctx, blks, blkRoots)
-	require.NoError(t, err)
+	require.NoError(t, service.onBlockBatch(ctx, blks, blkRoots))
 }
 
 func TestCachedPreState_CanGetFromStateSummary(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, st))
@@ -259,16 +220,8 @@ func TestCachedPreState_CanGetFromStateSummary(t *testing.T) {
 }
 
 func TestFillForkChoiceMissingBlocks_CanSave(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-	service.cfg.ForkChoiceStore = doublylinkedtree.New()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	st, _ := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, st))
@@ -308,16 +261,8 @@ func TestFillForkChoiceMissingBlocks_CanSave(t *testing.T) {
 }
 
 func TestFillForkChoiceMissingBlocks_RootsMatch(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-	service.cfg.ForkChoiceStore = doublylinkedtree.New()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	st, _ := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, st))
@@ -359,16 +304,8 @@ func TestFillForkChoiceMissingBlocks_RootsMatch(t *testing.T) {
 }
 
 func TestFillForkChoiceMissingBlocks_FilterFinalized(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, doublylinkedtree.New())),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-	service.cfg.ForkChoiceStore = doublylinkedtree.New()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	var genesisStateRoot [32]byte
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -417,17 +354,8 @@ func TestFillForkChoiceMissingBlocks_FilterFinalized(t *testing.T) {
 }
 
 func TestFillForkChoiceMissingBlocks_FinalizedSibling(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-	service.cfg.ForkChoiceStore = doublylinkedtree.New()
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	var genesisStateRoot [32]byte
 	genesis := blocks.NewGenesisBlock(genesisStateRoot[:])
@@ -565,17 +493,8 @@ func TestAncestorByDB_CtxErr(t *testing.T) {
 }
 
 func TestAncestor_HandleSkipSlot(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	beaconDB := tr.db
 
 	b1 := util.NewBeaconBlock()
 	b1.Block.Slot = 1
@@ -656,17 +575,8 @@ func TestAncestor_CanUseForkchoice(t *testing.T) {
 }
 
 func TestAncestor_CanUseDB(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, beaconDB := tr.ctx, tr.db
 
 	b1 := util.NewBeaconBlock()
 	b1.Block.Slot = 1
@@ -731,21 +641,8 @@ func TestHandleEpochBoundary_UpdateFirstSlot(t *testing.T) {
 }
 
 func TestOnBlock_CanFinalize_WithOnTick(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithAttestationPool(attestations.NewPool()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
 
 	gs, keys := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -781,21 +678,8 @@ func TestOnBlock_CanFinalize_WithOnTick(t *testing.T) {
 }
 
 func TestOnBlock_CanFinalize(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithAttestationPool(attestations.NewPool()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	gs, keys := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -829,39 +713,15 @@ func TestOnBlock_CanFinalize(t *testing.T) {
 }
 
 func TestOnBlock_NilBlock(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
 
-	err = service.onBlock(ctx, nil, [32]byte{})
+	err := service.onBlock(tr.ctx, nil, [32]byte{})
 	require.Equal(t, true, IsInvalidBlock(err))
 }
 
 func TestOnBlock_InvalidSignature(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	gs, keys := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -884,21 +744,8 @@ func TestOnBlock_CallNewPayloadAndForkchoiceUpdated(t *testing.T) {
 	config.BellatrixForkEpoch = 2
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithAttestationPool(attestations.NewPool()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	gs, keys := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -917,13 +764,8 @@ func TestOnBlock_CallNewPayloadAndForkchoiceUpdated(t *testing.T) {
 }
 
 func TestInsertFinalizedDeposits(t *testing.T) {
-	ctx := context.Background()
-	opts := testServiceOptsWithDB(t)
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts = append(opts, WithDepositCache(depositCache))
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, depositCache := tr.ctx, tr.dc
 
 	gs, _ := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -951,13 +793,8 @@ func TestInsertFinalizedDeposits(t *testing.T) {
 }
 
 func TestInsertFinalizedDeposits_MultipleFinalizedRoutines(t *testing.T) {
-	ctx := context.Background()
-	opts := testServiceOptsWithDB(t)
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts = append(opts, WithDepositCache(depositCache))
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx, depositCache := tr.ctx, tr.dc
 
 	gs, _ := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -980,7 +817,7 @@ func TestInsertFinalizedDeposits_MultipleFinalizedRoutines(t *testing.T) {
 		}, Proof: [][]byte{root}}, 100+i, int64(i), bytesutil.ToBytes32(root)))
 	}
 	// Insert 3 deposits before hand.
-	depositCache.InsertFinalizedDeposits(ctx, 2)
+	require.NoError(t, depositCache.InsertFinalizedDeposits(ctx, 2))
 
 	assert.NoError(t, service.insertFinalizedDeposits(ctx, [32]byte{'m', 'o', 'c', 'k'}))
 	fDeposits := depositCache.FinalizedDeposits(ctx)
@@ -1084,18 +921,8 @@ func Test_validateMergeTransitionBlock(t *testing.T) {
 	cfg.TerminalBlockHash = params.BeaconConfig().ZeroHash
 	params.OverrideBeaconConfig(cfg)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-		WithAttestationPool(attestations.NewPool()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
 
 	aHash := common.BytesToHash([]byte("a"))
 	bHash := common.BytesToHash([]byte("b"))
@@ -1222,17 +1049,8 @@ func Test_validateMergeTransitionBlock(t *testing.T) {
 }
 
 func TestService_insertSlashingsToForkChoiceStore(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	beaconState, privKeys := util.DeterministicGenesisState(t, 100)
 	att1 := util.HydrateIndexedAttestation(&ethpb.IndexedAttestation{
@@ -1273,21 +1091,8 @@ func TestService_insertSlashingsToForkChoiceStore(t *testing.T) {
 }
 
 func TestOnBlock_ProcessBlocksParallel(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	depositCache, err := depositcache.New()
-	require.NoError(t, err)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-		WithDepositCache(depositCache),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithAttestationPool(attestations.NewPool()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	gs, keys := util.DeterministicGenesisState(t, 32)
 	require.NoError(t, service.saveGenesisData(ctx, gs))
@@ -1352,17 +1157,8 @@ func TestOnBlock_ProcessBlocksParallel(t *testing.T) {
 }
 
 func Test_verifyBlkFinalizedSlot_invalidBlock(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	service, _ := minimalTestService(t)
 
-	fcs := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fcs)),
-		WithForkChoiceStore(fcs),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	require.NoError(t, service.cfg.ForkChoiceStore.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Epoch: 1}))
 	blk := util.HydrateBeaconBlock(&ethpb.BeaconBlock{Slot: 1})
 	wb, err := consensusblocks.NewBeaconBlock(blk)
@@ -1385,22 +1181,9 @@ func TestStore_NoViableHead_FCU(t *testing.T) {
 	config.BellatrixForkEpoch = 2
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
 	mockEngine := &mockExecution.EngineClient{ErrNewPayload: execution.ErrAcceptedSyncingPayloadStatus, ErrForkchoiceUpdated: execution.ErrAcceptedSyncingPayloadStatus}
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithExecutionEngineCaller(mockEngine),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t, WithExecutionEngineCaller(mockEngine))
+	ctx := tr.ctx
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	stateRoot, err := st.HashTreeRoot(ctx)
@@ -1545,22 +1328,9 @@ func TestStore_NoViableHead_NewPayload(t *testing.T) {
 	config.BellatrixForkEpoch = 2
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
 	mockEngine := &mockExecution.EngineClient{ErrNewPayload: execution.ErrAcceptedSyncingPayloadStatus, ErrForkchoiceUpdated: execution.ErrAcceptedSyncingPayloadStatus}
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithExecutionEngineCaller(mockEngine),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t, WithExecutionEngineCaller(mockEngine))
+	ctx := tr.ctx
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	stateRoot, err := st.HashTreeRoot(ctx)
@@ -1706,22 +1476,9 @@ func TestStore_NoViableHead_Liveness(t *testing.T) {
 	config.BellatrixForkEpoch = 2
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
 	mockEngine := &mockExecution.EngineClient{ErrNewPayload: execution.ErrAcceptedSyncingPayloadStatus, ErrForkchoiceUpdated: execution.ErrAcceptedSyncingPayloadStatus}
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithExecutionEngineCaller(mockEngine),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t, WithExecutionEngineCaller(mockEngine))
+	ctx := tr.ctx
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	stateRoot, err := st.HashTreeRoot(ctx)
@@ -1914,27 +1671,9 @@ func TestNoViableHead_Reboot(t *testing.T) {
 	config.BellatrixForkEpoch = 2
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-
 	mockEngine := &mockExecution.EngineClient{ErrNewPayload: execution.ErrAcceptedSyncingPayloadStatus, ErrForkchoiceUpdated: execution.ErrAcceptedSyncingPayloadStatus}
-	attSrv, err := attestations.NewService(ctx, &attestations.Config{})
-	require.NoError(t, err)
-	newfc := doublylinkedtree.New()
-	newStateGen := stategen.New(beaconDB, newfc)
-	newfc.SetBalancesByRooter(newStateGen.ActiveNonSlashedBalancesByRoot)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateGen(newStateGen),
-		WithForkChoiceStore(newfc),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithExecutionEngineCaller(mockEngine),
-		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
-		WithAttestationService(attSrv),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t, WithExecutionEngineCaller(mockEngine))
+	ctx := tr.ctx
 
 	genesisState, keys := util.DeterministicGenesisState(t, 64)
 	stateRoot, err := genesisState.HashTreeRoot(ctx)
@@ -2083,18 +1822,8 @@ func TestNoViableHead_Reboot(t *testing.T) {
 }
 
 func TestOnBlock_HandleBlockAttestations(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	st, keys := util.DeterministicGenesisState(t, 64)
 	stateRoot, err := st.HashTreeRoot(ctx)
@@ -2146,30 +1875,34 @@ func TestOnBlock_HandleBlockAttestations(t *testing.T) {
 	r3 := bytesutil.ToBytes32(a3.Data.BeaconBlockRoot)
 	require.Equal(t, false, service.cfg.ForkChoiceStore.HasNode(r3))
 
-	require.NoError(t, service.handleBlockAttestations(ctx, wsb.Block(), st)) // fine to use the same committe as st
+	require.NoError(t, service.handleBlockAttestations(ctx, wsb.Block(), st)) // fine to use the same committee as st
 	require.Equal(t, 0, service.cfg.AttPool.ForkchoiceAttestationCount())
-	require.NoError(t, service.handleBlockAttestations(ctx, wsb3.Block(), st3)) // fine to use the same committe as st
+	require.NoError(t, service.handleBlockAttestations(ctx, wsb3.Block(), st3)) // fine to use the same committee as st
 	require.Equal(t, 1, len(service.cfg.AttPool.BlockAttestations()))
 }
 
 func TestFillMissingBlockPayloadId_DiffSlotExitEarly(t *testing.T) {
-	fc := doublylinkedtree.New()
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
+	logHook := logTest.NewGlobal()
+	service, tr := minimalTestService(t)
+	service.lateBlockTasks(tr.ctx)
+	require.LogsDoNotContain(t, logHook, "could not perform late block tasks")
+}
 
-	opts := []Option{
-		WithForkChoiceStore(fc),
-		WithStateGen(stategen.New(beaconDB, fc)),
-	}
+func TestFillMissingBlockPayloadId_PrepareAllPayloads(t *testing.T) {
+	logHook := logTest.NewGlobal()
+	resetCfg := features.InitWithReset(&features.Flags{
+		PrepareAllPayloads: true,
+	})
+	defer resetCfg()
 
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
-	require.NoError(t, service.fillMissingBlockPayloadId(ctx), 0)
+	service, tr := minimalTestService(t)
+	service.lateBlockTasks(tr.ctx)
+	require.LogsDoNotContain(t, logHook, "could not perform late block tasks")
 }
 
 // Helper function to simulate the block being on time or delayed for proposer
 // boost. It alters the genesisTime tracked by the store.
-func driftGenesisTime(s *Service, slot int64, delay int64) {
+func driftGenesisTime(s *Service, slot, delay int64) {
 	offset := slot*int64(params.BeaconConfig().SecondsPerSlot) - delay
 	s.SetGenesisTime(time.Unix(time.Now().Unix()-offset, 0))
 }

beacon-chain/blockchain/receive_attestation.go

@@ -7,8 +7,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v4/async/event"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/config/features"
@@ -28,7 +26,7 @@ const reorgLateBlockCountAttestations = 2 * time.Second
 // AttestationStateFetcher allows for retrieving a beacon state corresponding to the block
 // root of an attestation's target checkpoint.
 type AttestationStateFetcher interface {
-	AttestationTargetState(ctx context.Context, target *ethpb.Checkpoint) (state.BeaconState, error)
+	AttestationTargetState(ctx context.Context, target *ethpb.Checkpoint) (state.ReadOnlyBeaconState, error)
 }
 
 // AttestationReceiver interface defines the methods of chain service receive and processing new attestations.
@@ -39,7 +37,7 @@ type AttestationReceiver interface {
 }
 
 // AttestationTargetState returns the pre state of attestation.
-func (s *Service) AttestationTargetState(ctx context.Context, target *ethpb.Checkpoint) (state.BeaconState, error) {
+func (s *Service) AttestationTargetState(ctx context.Context, target *ethpb.Checkpoint) (state.ReadOnlyBeaconState, error) {
 	ss, err := slots.EpochStart(target.Epoch)
 	if err != nil {
 		return nil, err
@@ -47,6 +45,9 @@ func (s *Service) AttestationTargetState(ctx context.Context, target *ethpb.Chec
 	if err := slots.ValidateClock(ss, uint64(s.genesisTime.Unix())); err != nil {
 		return nil, err
 	}
+	// We acquire the lock here instead than on gettAttPreState because that function gets called from UpdateHead that holds a write lock
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
 	return s.getAttPreState(ctx, target)
 }
 
@@ -67,20 +68,13 @@ func (s *Service) VerifyLmdFfgConsistency(ctx context.Context, a *ethpb.Attestat
 }
 
 // This routine processes fork choice attestations from the pool to account for validator votes and fork choice.
-func (s *Service) spawnProcessAttestationsRoutine(stateFeed *event.Feed) {
-	// Wait for state to be initialized.
-	stateChannel := make(chan *feed.Event, 1)
-	stateSub := stateFeed.Subscribe(stateChannel)
+func (s *Service) spawnProcessAttestationsRoutine() {
 	go func() {
-		select {
-		case <-s.ctx.Done():
-			stateSub.Unsubscribe()
+		_, err := s.clockWaiter.WaitForClock(s.ctx)
+		if err != nil {
+			log.WithError(err).Error("spawnProcessAttestationsRoutine failed to receive genesis data")
 			return
-		case <-stateChannel:
-			stateSub.Unsubscribe()
-			break
 		}
-
 		if s.genesisTime.IsZero() {
 			log.Warn("ProcessAttestations routine waiting for genesis time")
 			for s.genesisTime.IsZero() {
@@ -117,6 +111,9 @@ func (s *Service) spawnProcessAttestationsRoutine(stateFeed *event.Feed) {
 // UpdateHead updates the canonical head of the chain based on information from fork-choice attestations and votes.
 // The caller of this function MUST hold a lock in forkchoice
 func (s *Service) UpdateHead(ctx context.Context, proposingSlot primitives.Slot) {
+	ctx, span := trace.StartSpan(ctx, "beacon-chain.blockchain.UpdateHead")
+	defer span.End()
+
 	start := time.Now()
 	s.cfg.ForkChoiceStore.Lock()
 	defer s.cfg.ForkChoiceStore.Unlock()
@@ -133,19 +130,24 @@ func (s *Service) UpdateHead(ctx context.Context, proposingSlot primitives.Slot)
 	newHeadRoot, err := s.cfg.ForkChoiceStore.Head(ctx)
 	if err != nil {
 		log.WithError(err).Error("Could not compute head from new attestations")
+		// Fallback to our current head root in the event of a failure.
+		s.headLock.RLock()
+		newHeadRoot = s.headRoot()
+		s.headLock.RUnlock()
 	}
 	newAttHeadElapsedTime.Observe(float64(time.Since(start).Milliseconds()))
 
-	s.headLock.RLock()
-	if s.headRoot() != newHeadRoot {
+	changed, err := s.forkchoiceUpdateWithExecution(s.ctx, newHeadRoot, proposingSlot)
+	if err != nil {
+		log.WithError(err).Error("could not update forkchoice")
+	}
+	if changed {
+		s.headLock.RLock()
 		log.WithFields(logrus.Fields{
 			"oldHeadRoot": fmt.Sprintf("%#x", s.headRoot()),
 			"newHeadRoot": fmt.Sprintf("%#x", newHeadRoot),
 		}).Debug("Head changed due to attestations")
-	}
-	s.headLock.RUnlock()
-	if err := s.forkchoiceUpdateWithExecution(s.ctx, newHeadRoot, proposingSlot); err != nil {
-		log.WithError(err).Error("could not update forkchoice")
+		s.headLock.RUnlock()
 	}
 }
 

beacon-chain/blockchain/receive_attestation_test.go

@@ -7,11 +7,7 @@ import (
 
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
-	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/types"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
@@ -31,22 +27,18 @@ var (
 
 func TestAttestationCheckPtState_FarFutureSlot(t *testing.T) {
 	helpers.ClearCache()
-	beaconDB := testDB.SetupDB(t)
+	service, _ := minimalTestService(t)
 
-	chainService := setupBeaconChain(t, beaconDB)
-	chainService.genesisTime = time.Now()
+	service.genesisTime = time.Now()
 
 	e := primitives.Epoch(slots.MaxSlotBuffer/uint64(params.BeaconConfig().SlotsPerEpoch) + 1)
-	_, err := chainService.AttestationTargetState(context.Background(), &ethpb.Checkpoint{Epoch: e})
+	_, err := service.AttestationTargetState(context.Background(), &ethpb.Checkpoint{Epoch: e})
 	require.ErrorContains(t, "exceeds max allowed value relative to the local clock", err)
 }
 
 func TestVerifyLMDFFGConsistent_NotOK(t *testing.T) {
-	ctx := context.Background()
-	opts := testServiceOptsWithDB(t)
-
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	b32 := util.NewBeaconBlock()
 	b32.Block.Slot = 32
@@ -69,11 +61,8 @@ func TestVerifyLMDFFGConsistent_NotOK(t *testing.T) {
 }
 
 func TestVerifyLMDFFGConsistent_OK(t *testing.T) {
-	ctx := context.Background()
-
-	opts := testServiceOptsWithDB(t)
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	ctx := tr.ctx
 
 	b32 := util.NewBeaconBlock()
 	b32.Block.Slot = 32
@@ -96,13 +85,10 @@ func TestVerifyLMDFFGConsistent_OK(t *testing.T) {
 }
 
 func TestProcessAttestations_Ok(t *testing.T) {
+	service, tr := minimalTestService(t)
 	hook := logTest.NewGlobal()
-	ctx := context.Background()
-	opts := testServiceOptsWithDB(t)
-	opts = append(opts, WithAttestationPool(attestations.NewPool()))
+	ctx := tr.ctx
 
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	service.genesisTime = prysmTime.Now().Add(-1 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
 	genesisState, pks := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, genesisState.SetGenesisTime(uint64(prysmTime.Now().Unix())-params.BeaconConfig().SecondsPerSlot))
@@ -126,21 +112,9 @@ func TestProcessAttestations_Ok(t *testing.T) {
 }
 
 func TestService_ProcessAttestationsAndUpdateHead(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	newStateGen := stategen.New(beaconDB, fcs)
-	fcs.SetBalancesByRooter(newStateGen.ActiveNonSlashedBalancesByRoot)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(newStateGen),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateNotifier(&mockBeaconNode{}),
-		WithForkChoiceStore(fcs),
-	}
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
 
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	service.genesisTime = prysmTime.Now().Add(-2 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
 	genesisState, pks := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, genesisState))
@@ -189,21 +163,9 @@ func TestService_ProcessAttestationsAndUpdateHead(t *testing.T) {
 }
 
 func TestService_UpdateHead_NoAtts(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fcs := doublylinkedtree.New()
-	newStateGen := stategen.New(beaconDB, fcs)
-	fcs.SetBalancesByRooter(newStateGen.ActiveNonSlashedBalancesByRoot)
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithAttestationPool(attestations.NewPool()),
-		WithStateNotifier(&mockBeaconNode{}),
-		WithStateGen(newStateGen),
-		WithForkChoiceStore(fcs),
-	}
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
 
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	service.genesisTime = prysmTime.Now().Add(-2 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
 	genesisState, pks := util.DeterministicGenesisState(t, 64)
 	require.NoError(t, service.saveGenesisData(ctx, genesisState))

beacon-chain/blockchain/receive_block.go

@@ -179,10 +179,14 @@ func (s *Service) prunePostBlockOperationPools(ctx context.Context, blk interfac
 		return errors.Wrap(err, "could not process BLSToExecutionChanges")
 	}
 
-	//  Mark attester slashings as seen so we don't include same ones in future blocks.
+	// Mark slashings as seen so we don't include same ones in future blocks.
 	for _, as := range blk.Block().Body().AttesterSlashings() {
 		s.cfg.SlashingPool.MarkIncludedAttesterSlashing(as)
 	}
+	for _, ps := range blk.Block().Body().ProposerSlashings() {
+		s.cfg.SlashingPool.MarkIncludedProposerSlashing(ps)
+	}
+
 	return nil
 }
 

beacon-chain/blockchain/receive_block_test.go

@@ -7,12 +7,7 @@ import (
 	"time"
 
 	blockchainTesting "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
-	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
-	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/blstoexec"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/voluntaryexits"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
@@ -125,22 +120,15 @@ func TestService_ReceiveBlock(t *testing.T) {
 	for _, tt := range tests {
 		wg.Add(1)
 		t.Run(tt.name, func(t *testing.T) {
-			beaconDB := testDB.SetupDB(t)
+			s, tr := minimalTestService(t,
+				WithFinalizedStateAtStartUp(genesis),
+				WithExitPool(voluntaryexits.NewPool()),
+				WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}))
+
+			beaconDB := tr.db
 			genesisBlockRoot := bytesutil.ToBytes32(nil)
 			require.NoError(t, beaconDB.SaveState(ctx, genesis, genesisBlockRoot))
 
-			fc := doublylinkedtree.New()
-			opts := []Option{
-				WithDatabase(beaconDB),
-				WithForkChoiceStore(fc),
-				WithAttestationPool(attestations.NewPool()),
-				WithExitPool(voluntaryexits.NewPool()),
-				WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}),
-				WithStateGen(stategen.New(beaconDB, fc)),
-				WithFinalizedStateAtStartUp(genesis),
-			}
-			s, err := NewService(ctx, opts...)
-			require.NoError(t, err)
 			// Initialize it here.
 			_ = s.cfg.StateNotifier.StateFeed()
 			require.NoError(t, s.saveGenesisData(ctx, genesis))
@@ -162,25 +150,16 @@ func TestService_ReceiveBlock(t *testing.T) {
 }
 
 func TestService_ReceiveBlockUpdateHead(t *testing.T) {
-	ctx := context.Background()
+	s, tr := minimalTestService(t,
+		WithExitPool(voluntaryexits.NewPool()),
+		WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}))
+	ctx, beaconDB := tr.ctx, tr.db
 	genesis, keys := util.DeterministicGenesisState(t, 64)
 	b, err := util.GenerateFullBlock(genesis, keys, util.DefaultBlockGenConfig(), 1)
 	assert.NoError(t, err)
-	beaconDB := testDB.SetupDB(t)
 	genesisBlockRoot := bytesutil.ToBytes32(nil)
 	require.NoError(t, beaconDB.SaveState(ctx, genesis, genesisBlockRoot))
-	fc := doublylinkedtree.New()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithForkChoiceStore(fc),
-		WithAttestationPool(attestations.NewPool()),
-		WithExitPool(voluntaryexits.NewPool()),
-		WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}),
-		WithStateGen(stategen.New(beaconDB, fc)),
-	}
 
-	s, err := NewService(ctx, opts...)
-	require.NoError(t, err)
 	// Initialize it here.
 	_ = s.cfg.StateNotifier.StateFeed()
 	require.NoError(t, s.saveGenesisData(ctx, genesis))
@@ -246,17 +225,8 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			fc := doublylinkedtree.New()
-			beaconDB := testDB.SetupDB(t)
-			opts := []Option{
-				WithDatabase(beaconDB),
-				WithForkChoiceStore(fc),
-				WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}),
-				WithStateGen(stategen.New(beaconDB, fc)),
-			}
-			s, err := NewService(ctx, opts...)
-			require.NoError(t, err)
-			err = s.saveGenesisData(ctx, genesis)
+			s, _ := minimalTestService(t, WithStateNotifier(&blockchainTesting.MockStateNotifier{RecordEvents: true}))
+			err := s.saveGenesisData(ctx, genesis)
 			require.NoError(t, err)
 			root, err := tt.args.block.Block.HashTreeRoot()
 			require.NoError(t, err)
@@ -276,10 +246,7 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 }
 
 func TestService_HasBlock(t *testing.T) {
-	opts := testServiceOptsWithDB(t)
-	opts = append(opts, WithStateNotifier(&blockchainTesting.MockStateNotifier{}))
-	s, err := NewService(context.Background(), opts...)
-	require.NoError(t, err)
+	s, _ := minimalTestService(t)
 	r := [32]byte{'a'}
 	if s.HasBlock(context.Background(), r) {
 		t.Error("Should not have block")
@@ -299,10 +266,8 @@ func TestService_HasBlock(t *testing.T) {
 }
 
 func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
-	opts := testServiceOptsWithDB(t)
 	hook := logTest.NewGlobal()
-	s, err := NewService(context.Background(), opts...)
-	require.NoError(t, err)
+	s, _ := minimalTestService(t)
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
 
@@ -312,9 +277,9 @@ func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
 
 func TestCheckSaveHotStateDB_Disabling(t *testing.T) {
 	hook := logTest.NewGlobal()
-	opts := testServiceOptsWithDB(t)
-	s, err := NewService(context.Background(), opts...)
-	require.NoError(t, err)
+
+	s, _ := minimalTestService(t)
+
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
 	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
@@ -326,9 +291,7 @@ func TestCheckSaveHotStateDB_Disabling(t *testing.T) {
 
 func TestCheckSaveHotStateDB_Overflow(t *testing.T) {
 	hook := logTest.NewGlobal()
-	opts := testServiceOptsWithDB(t)
-	s, err := NewService(context.Background(), opts...)
-	require.NoError(t, err)
+	s, _ := minimalTestService(t)
 	s.genesisTime = time.Now()
 
 	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
@@ -336,19 +299,8 @@ func TestCheckSaveHotStateDB_Overflow(t *testing.T) {
 }
 
 func TestHandleBlockBLSToExecutionChanges(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	fc := doublylinkedtree.New()
-	pool := blstoexec.NewPool()
-	opts := []Option{
-		WithDatabase(beaconDB),
-		WithStateGen(stategen.New(beaconDB, fc)),
-		WithForkChoiceStore(fc),
-		WithStateNotifier(&blockchainTesting.MockStateNotifier{}),
-		WithBLSToExecPool(pool),
-	}
-	service, err := NewService(ctx, opts...)
-	require.NoError(t, err)
+	service, tr := minimalTestService(t)
+	pool := tr.blsPool
 
 	t.Run("pre Capella block", func(t *testing.T) {
 		body := &ethpb.BeaconBlockBodyBellatrix{}

beacon-chain/blockchain/service.go

@@ -27,6 +27,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/slashings"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/voluntaryexits"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/startup"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/features"
@@ -57,6 +58,8 @@ type Service struct {
 	initSyncBlocks        map[[32]byte]interfaces.ReadOnlySignedBeaconBlock
 	initSyncBlocksLock    sync.RWMutex
 	wsVerifier            *WeakSubjectivityVerifier
+	clockSetter           startup.ClockSetter
+	clockWaiter           startup.ClockWaiter
 }
 
 // config options for the service.
@@ -83,6 +86,8 @@ type config struct {
 	ExecutionEngineCaller   execution.EngineCaller
 }
 
+var ErrMissingClockSetter = errors.New("blockchain Service initialized without a startup.ClockSetter")
+
 // NewService instantiates a new block service instance that will
 // be registered into a running beacon node.
 func NewService(ctx context.Context, opts ...Option) (*Service, error) {
@@ -100,6 +105,9 @@ func NewService(ctx context.Context, opts ...Option) (*Service, error) {
 			return nil, err
 		}
 	}
+	if srv.clockSetter == nil {
+		return nil, ErrMissingClockSetter
+	}
 	var err error
 	srv.wsVerifier, err = NewWeakSubjectivityVerifier(srv.cfg.WeakSubjectivityCheckpt, srv.cfg.BeaconDB)
 	if err != nil {
@@ -121,8 +129,8 @@ func (s *Service) Start() {
 			log.Fatal(err)
 		}
 	}
-	s.spawnProcessAttestationsRoutine(s.cfg.StateNotifier.StateFeed())
-	s.fillMissingPayloadIDRoutine(s.ctx, s.cfg.StateNotifier.StateFeed())
+	s.spawnProcessAttestationsRoutine()
+	s.spawnLateBlockTasksLoop()
 }
 
 // Stop the blockchain service's main event loop and associated goroutines.
@@ -236,13 +244,10 @@ func (s *Service) StartFromSavedState(saved state.BeaconState) error {
 		return errors.Wrap(err, "could not verify initial checkpoint provided for chain sync")
 	}
 
-	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
-		Type: statefeed.Initialized,
-		Data: &statefeed.InitializedData{
-			StartTime:             s.genesisTime,
-			GenesisValidatorsRoot: saved.GenesisValidatorsRoot(),
-		},
-	})
+	vr := bytesutil.ToBytes32(saved.GenesisValidatorsRoot())
+	if err := s.clockSetter.SetClock(startup.NewClock(s.genesisTime, vr)); err != nil {
+		return errors.Wrap(err, "failed to initialize blockchain service")
+	}
 
 	return nil
 }
@@ -359,15 +364,10 @@ func (s *Service) onExecutionChainStart(ctx context.Context, genesisTime time.Ti
 	}
 	go slots.CountdownToGenesis(ctx, genesisTime, uint64(initializedState.NumValidators()), gRoot)
 
-	// We send out a state initialized event to the rest of the services
-	// running in the beacon node.
-	s.cfg.StateNotifier.StateFeed().Send(&feed.Event{
-		Type: statefeed.Initialized,
-		Data: &statefeed.InitializedData{
-			StartTime:             genesisTime,
-			GenesisValidatorsRoot: initializedState.GenesisValidatorsRoot(),
-		},
-	})
+	vr := bytesutil.ToBytes32(initializedState.GenesisValidatorsRoot())
+	if err := s.clockSetter.SetClock(startup.NewClock(genesisTime, vr)); err != nil {
+		log.WithError(err).Fatal("failed to initialize blockchain service from execution start event")
+	}
 }
 
 // initializes the state and genesis block of the beacon chain to persistent storage

beacon-chain/blockchain/service_test.go

@@ -8,13 +8,9 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/prysmaticlabs/prysm/v4/async/event"
-	mock "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache/depositcache"
 	"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"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
@@ -23,7 +19,9 @@ import (
 	mockExecution "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/slashings"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/voluntaryexits"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/startup"
 	state_native "github.com/prysmaticlabs/prysm/v4/beacon-chain/state/state-native"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
 	"github.com/prysmaticlabs/prysm/v4/config/features"
@@ -38,45 +36,8 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/testing/util"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 	logTest "github.com/sirupsen/logrus/hooks/test"
-	"google.golang.org/protobuf/proto"
 )
 
-type mockBeaconNode struct {
-	stateFeed *event.Feed
-}
-
-// StateFeed mocks the same method in the beacon node.
-func (mbn *mockBeaconNode) StateFeed() *event.Feed {
-	if mbn.stateFeed == nil {
-		mbn.stateFeed = new(event.Feed)
-	}
-	return mbn.stateFeed
-}
-
-type mockBroadcaster struct {
-	broadcastCalled bool
-}
-
-func (mb *mockBroadcaster) Broadcast(_ context.Context, _ proto.Message) error {
-	mb.broadcastCalled = true
-	return nil
-}
-
-func (mb *mockBroadcaster) BroadcastAttestation(_ context.Context, _ uint64, _ *ethpb.Attestation) error {
-	mb.broadcastCalled = true
-	return nil
-}
-
-func (mb *mockBroadcaster) BroadcastSyncCommitteeMessage(_ context.Context, _ uint64, _ *ethpb.SyncCommitteeMessage) error {
-	mb.broadcastCalled = true
-	return nil
-}
-
-func (mb *mockBroadcaster) BroadcastBLSChanges(_ context.Context, _ []*ethpb.SignedBLSToExecutionChange) {
-}
-
-var _ p2p.Broadcaster = (*mockBroadcaster)(nil)
-
 func setupBeaconChain(t *testing.T, beaconDB db.Database) *Service {
 	ctx := context.Background()
 	var web3Service *execution.Service
@@ -131,12 +92,15 @@ func setupBeaconChain(t *testing.T, beaconDB db.Database) *Service {
 		WithDepositCache(depositCache),
 		WithChainStartFetcher(web3Service),
 		WithAttestationPool(attestations.NewPool()),
+		WithSlashingPool(slashings.NewPool()),
+		WithExitPool(voluntaryexits.NewPool()),
 		WithP2PBroadcaster(&mockBroadcaster{}),
 		WithStateNotifier(&mockBeaconNode{}),
 		WithForkChoiceStore(fc),
 		WithAttestationService(attService),
 		WithStateGen(stateGen),
 		WithProposerIdsCache(cache.NewProposerPayloadIDsCache()),
+		WithClockSynchronizer(startup.NewClockSynchronizer()),
 	}
 
 	chainService, err := NewService(ctx, opts...)
@@ -153,12 +117,14 @@ func TestChainStartStop_Initialized(t *testing.T) {
 
 	chainService := setupBeaconChain(t, beaconDB)
 
+	gt := time.Unix(23, 0)
 	genesisBlk := util.NewBeaconBlock()
 	blkRoot, err := genesisBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
+	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
 	require.NoError(t, s.SetSlot(1))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveHeadBlockRoot(ctx, blkRoot))
@@ -188,12 +154,14 @@ func TestChainStartStop_GenesisZeroHashes(t *testing.T) {
 
 	chainService := setupBeaconChain(t, beaconDB)
 
+	gt := time.Unix(23, 0)
 	genesisBlk := util.NewBeaconBlock()
 	blkRoot, err := genesisBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	wsb := util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
+	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, blkRoot))
 	require.NoError(t, beaconDB.SaveBlock(ctx, wsb))
@@ -260,12 +228,14 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 
 	chainService := setupBeaconChain(t, beaconDB)
 
+	gt := time.Unix(23, 0)
 	genesisBlk := util.NewBeaconBlock()
 	blkRoot, err := genesisBlk.Block.HashTreeRoot()
 	require.NoError(t, err)
 	util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
+	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
 	require.NoError(t, s.SetSlot(0))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveHeadBlockRoot(ctx, blkRoot))
@@ -286,14 +256,9 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 }
 
 func TestChainService_InitializeChainInfo(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-
 	genesis := util.NewBeaconBlock()
 	genesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
-	util.SaveBlock(t, ctx, beaconDB, genesis)
 
 	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*2 + 1
 	headBlock := util.NewBeaconBlock()
@@ -305,23 +270,18 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 	require.NoError(t, headState.SetGenesisValidatorsRoot(params.BeaconConfig().ZeroHash[:]))
 	headRoot, err := headBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
+
+	c, tr := minimalTestService(t, WithFinalizedStateAtStartUp(headState))
+	ctx, beaconDB, stateGen := tr.ctx, tr.db, tr.sg
+
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, genesis)
 	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
 	require.NoError(t, beaconDB.SaveState(ctx, headState, genesisRoot))
 	util.SaveBlock(t, ctx, beaconDB, headBlock)
 	require.NoError(t, beaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
-	attSrv, err := attestations.NewService(ctx, &attestations.Config{})
-	require.NoError(t, err)
-	fc := doublylinkedtree.New()
-	stateGen := stategen.New(beaconDB, fc)
-	c, err := NewService(ctx,
-		WithForkChoiceStore(fc),
-		WithDatabase(beaconDB),
-		WithStateGen(stateGen),
-		WithAttestationService(attSrv),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithFinalizedStateAtStartUp(headState))
-	require.NoError(t, err)
 	require.NoError(t, stateGen.SaveState(ctx, headRoot, headState))
+
 	require.NoError(t, c.StartFromSavedState(headState))
 	headBlk, err := c.HeadBlock(ctx)
 	require.NoError(t, err)
@@ -341,14 +301,9 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 }
 
 func TestChainService_InitializeChainInfo_SetHeadAtGenesis(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-
 	genesis := util.NewBeaconBlock()
 	genesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
-	util.SaveBlock(t, ctx, beaconDB, genesis)
 
 	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*2 + 1
 	headBlock := util.NewBeaconBlock()
@@ -360,27 +315,21 @@ func TestChainService_InitializeChainInfo_SetHeadAtGenesis(t *testing.T) {
 	require.NoError(t, headState.SetGenesisValidatorsRoot(params.BeaconConfig().ZeroHash[:]))
 	headRoot, err := headBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
+
+	c, tr := minimalTestService(t, WithFinalizedStateAtStartUp(headState))
+	ctx, beaconDB := tr.ctx, tr.db
+
+	util.SaveBlock(t, ctx, beaconDB, genesis)
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
 	require.NoError(t, beaconDB.SaveState(ctx, headState, genesisRoot))
+	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
 	util.SaveBlock(t, ctx, beaconDB, headBlock)
-	attSrv, err := attestations.NewService(ctx, &attestations.Config{})
-	require.NoError(t, err)
 	ss := &ethpb.StateSummary{
 		Slot: finalizedSlot,
 		Root: headRoot[:],
 	}
 	require.NoError(t, beaconDB.SaveStateSummary(ctx, ss))
 	require.NoError(t, beaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Root: headRoot[:], Epoch: slots.ToEpoch(finalizedSlot)}))
-	fc := doublylinkedtree.New()
-	stateGen := stategen.New(beaconDB, fc)
-	c, err := NewService(ctx,
-		WithForkChoiceStore(fc),
-		WithDatabase(beaconDB),
-		WithStateGen(stateGen),
-		WithAttestationService(attSrv),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithFinalizedStateAtStartUp(headState))
-	require.NoError(t, err)
 
 	require.NoError(t, c.StartFromSavedState(headState))
 	s, err := c.HeadState(ctx)
@@ -456,17 +405,21 @@ func TestServiceStop_SaveCachedBlocks(t *testing.T) {
 }
 
 func TestProcessChainStartTime_ReceivedFeed(t *testing.T) {
+	ctx := context.Background()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
-	stateChannel := make(chan *feed.Event, 1)
-	stateSub := service.cfg.StateNotifier.StateFeed().Subscribe(stateChannel)
-	defer stateSub.Unsubscribe()
-	service.onExecutionChainStart(context.Background(), time.Now())
-
-	stateEvent := <-stateChannel
-	require.Equal(t, int(stateEvent.Type), statefeed.Initialized)
-	_, ok := stateEvent.Data.(*statefeed.InitializedData)
-	require.Equal(t, true, ok)
+	mgs := &MockClockSetter{}
+	service.clockSetter = mgs
+	gt := time.Now()
+	service.onExecutionChainStart(context.Background(), gt)
+	gs, err := beaconDB.GenesisState(ctx)
+	require.NoError(t, err)
+	require.NotEqual(t, nil, gs)
+	require.Equal(t, 32, len(gs.GenesisValidatorsRoot()))
+	var zero [32]byte
+	require.DeepNotEqual(t, gs.GenesisValidatorsRoot(), zero[:])
+	require.Equal(t, gt, mgs.G.GenesisTime())
+	require.Equal(t, bytesutil.ToBytes32(gs.GenesisValidatorsRoot()), mgs.G.GenesisValidatorsRoot())
 }
 
 func BenchmarkHasBlockDB(b *testing.B) {
@@ -515,15 +468,10 @@ func TestChainService_EverythingOptimistic(t *testing.T) {
 		EnableStartOptimistic: true,
 	})
 	defer resetFn()
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
 
 	genesis := util.NewBeaconBlock()
 	genesisRoot, err := genesis.Block.HashTreeRoot()
 	require.NoError(t, err)
-	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
-	util.SaveBlock(t, ctx, beaconDB, genesis)
-
 	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*2 + 1
 	headBlock := util.NewBeaconBlock()
 	headBlock.Block.Slot = finalizedSlot
@@ -534,21 +482,17 @@ func TestChainService_EverythingOptimistic(t *testing.T) {
 	require.NoError(t, headState.SetGenesisValidatorsRoot(params.BeaconConfig().ZeroHash[:]))
 	headRoot, err := headBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
+
+	c, tr := minimalTestService(t, WithFinalizedStateAtStartUp(headState))
+	ctx, beaconDB, stateGen := tr.ctx, tr.db, tr.sg
+
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, genesis)
 	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
 	require.NoError(t, beaconDB.SaveState(ctx, headState, genesisRoot))
 	util.SaveBlock(t, ctx, beaconDB, headBlock)
 	require.NoError(t, beaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
-	attSrv, err := attestations.NewService(ctx, &attestations.Config{})
-	require.NoError(t, err)
-	fc := doublylinkedtree.New()
-	stateGen := stategen.New(beaconDB, fc)
-	c, err := NewService(ctx,
-		WithForkChoiceStore(fc),
-		WithDatabase(beaconDB),
-		WithStateGen(stateGen),
-		WithAttestationService(attSrv),
-		WithStateNotifier(&mock.MockStateNotifier{}),
-		WithFinalizedStateAtStartUp(headState))
+
 	require.NoError(t, err)
 	require.NoError(t, stateGen.SaveState(ctx, headRoot, headState))
 	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
@@ -558,3 +502,19 @@ func TestChainService_EverythingOptimistic(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, true, op)
 }
+
+// MockClockSetter satisfies the ClockSetter interface for testing the conditions where blockchain.Service should
+// call SetGenesis.
+type MockClockSetter struct {
+	G   *startup.Clock
+	Err error
+}
+
+var _ startup.ClockSetter = &MockClockSetter{}
+
+// SetClock satisfies the ClockSetter interface.
+// The value is written to an exported field 'G' so that it can be accessed in tests.
+func (s *MockClockSetter) SetClock(g *startup.Clock) error {
+	s.G = g
+	return s.Err
+}

beacon-chain/blockchain/setup_test.go

@@ -0,0 +1,115 @@
+package blockchain
+
+import (
+	"context"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v4/async/event"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache/depositcache"
+	statefeed "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed/state"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
+	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice"
+	doublylinkedtree "github.com/prysmaticlabs/prysm/v4/beacon-chain/forkchoice/doubly-linked-tree"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/blstoexec"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/startup"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	"google.golang.org/protobuf/proto"
+)
+
+type mockBeaconNode struct {
+	stateFeed *event.Feed
+}
+
+// StateFeed mocks the same method in the beacon node.
+func (mbn *mockBeaconNode) StateFeed() *event.Feed {
+	if mbn.stateFeed == nil {
+		mbn.stateFeed = new(event.Feed)
+	}
+	return mbn.stateFeed
+}
+
+type mockBroadcaster struct {
+	broadcastCalled bool
+}
+
+func (mb *mockBroadcaster) Broadcast(_ context.Context, _ proto.Message) error {
+	mb.broadcastCalled = true
+	return nil
+}
+
+func (mb *mockBroadcaster) BroadcastAttestation(_ context.Context, _ uint64, _ *ethpb.Attestation) error {
+	mb.broadcastCalled = true
+	return nil
+}
+
+func (mb *mockBroadcaster) BroadcastSyncCommitteeMessage(_ context.Context, _ uint64, _ *ethpb.SyncCommitteeMessage) error {
+	mb.broadcastCalled = true
+	return nil
+}
+
+func (mb *mockBroadcaster) BroadcastBLSChanges(_ context.Context, _ []*ethpb.SignedBLSToExecutionChange) {
+}
+
+var _ p2p.Broadcaster = (*mockBroadcaster)(nil)
+
+type testServiceRequirements struct {
+	ctx     context.Context
+	db      db.Database
+	fcs     forkchoice.ForkChoicer
+	sg      *stategen.State
+	notif   statefeed.Notifier
+	cs      *startup.ClockSynchronizer
+	attPool attestations.Pool
+	attSrv  *attestations.Service
+	blsPool *blstoexec.Pool
+	dc      *depositcache.DepositCache
+}
+
+func minimalTestService(t *testing.T, opts ...Option) (*Service, *testServiceRequirements) {
+	ctx := context.Background()
+	beaconDB := testDB.SetupDB(t)
+	fcs := doublylinkedtree.New()
+	sg := stategen.New(beaconDB, fcs)
+	notif := &mockBeaconNode{}
+	fcs.SetBalancesByRooter(sg.ActiveNonSlashedBalancesByRoot)
+	cs := startup.NewClockSynchronizer()
+	attPool := attestations.NewPool()
+	attSrv, err := attestations.NewService(ctx, &attestations.Config{Pool: attPool})
+	require.NoError(t, err)
+	blsPool := blstoexec.NewPool()
+	dc, err := depositcache.New()
+	require.NoError(t, err)
+	req := &testServiceRequirements{
+		ctx:     ctx,
+		db:      beaconDB,
+		fcs:     fcs,
+		sg:      sg,
+		notif:   notif,
+		cs:      cs,
+		attPool: attPool,
+		attSrv:  attSrv,
+		blsPool: blsPool,
+		dc:      dc,
+	}
+	defOpts := []Option{WithDatabase(req.db),
+		WithStateNotifier(req.notif),
+		WithStateGen(req.sg),
+		WithForkChoiceStore(req.fcs),
+		WithClockSynchronizer(req.cs),
+		WithAttestationPool(req.attPool),
+		WithAttestationService(req.attSrv),
+		WithBLSToExecPool(req.blsPool),
+		WithDepositCache(dc),
+	}
+	// append the variadic opts so they override the defaults by being processed afterwards
+	opts = append(defOpts, opts...)
+	s, err := NewService(req.ctx, opts...)
+
+	require.NoError(t, err)
+	return s, req
+}

beacon-chain/blockchain/testing/mock.go

@@ -320,7 +320,7 @@ func (_ *ChainService) ReceiveAttestation(_ context.Context, _ *ethpb.Attestatio
 }
 
 // AttestationTargetState mocks AttestationTargetState method in chain service.
-func (s *ChainService) AttestationTargetState(_ context.Context, _ *ethpb.Checkpoint) (state.BeaconState, error) {
+func (s *ChainService) AttestationTargetState(_ context.Context, _ *ethpb.Checkpoint) (state.ReadOnlyBeaconState, error) {
 	return s.State, nil
 }
 
@@ -587,3 +587,13 @@ func (s *ChainService) ProposerBoost() [32]byte {
 	}
 	return [32]byte{}
 }
+
+// FinalizedBlockHash mocks the same method in the chain service
+func (s *ChainService) FinalizedBlockHash() [32]byte {
+	return [32]byte{}
+}
+
+// UnrealizedJustifiedPayloadBlockHash mocks the same method in the chain service
+func (s *ChainService) UnrealizedJustifiedPayloadBlockHash() [32]byte {
+	return [32]byte{}
+}

beacon-chain/builder/BUILD.bazel

@@ -12,11 +12,13 @@ go_library(
     deps = [
         "//api/client/builder:go_default_library",
         "//beacon-chain/blockchain:go_default_library",
+        "//beacon-chain/cache:go_default_library",
         "//beacon-chain/db:go_default_library",
         "//cmd/beacon-chain/flags:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//monitoring/tracing:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",

beacon-chain/builder/option.go

@@ -3,6 +3,7 @@ package builder
 import (
 	"github.com/prysmaticlabs/prysm/v4/api/client/builder"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
 	"github.com/prysmaticlabs/prysm/v4/cmd/beacon-chain/flags"
 	"github.com/urfave/cli/v2"
@@ -50,3 +51,11 @@ func WithDatabase(beaconDB db.HeadAccessDatabase) Option {
 		return nil
 	}
 }
+
+// WithRegistrationCache uses a cache for the validator registrations instead of a persistent db.
+func WithRegistrationCache() Option {
+	return func(s *Service) error {
+		s.registrationCache = cache.NewRegistrationCache()
+		return nil
+	}
+}

beacon-chain/builder/service.go

@@ -8,10 +8,12 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/api/client/builder"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/monitoring/tracing"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	log "github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -25,6 +27,7 @@ type BlockBuilder interface {
 	SubmitBlindedBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error)
 	GetHeader(ctx context.Context, slot primitives.Slot, parentHash [32]byte, pubKey [48]byte) (builder.SignedBid, error)
 	RegisterValidator(ctx context.Context, reg []*ethpb.SignedValidatorRegistrationV1) error
+	RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error)
 	Configured() bool
 }
 
@@ -37,10 +40,11 @@ type config struct {
 
 // Service defines a service that provides a client for interacting with the beacon chain and MEV relay network.
 type Service struct {
-	cfg    *config
-	c      builder.BuilderClient
-	ctx    context.Context
-	cancel context.CancelFunc
+	cfg               *config
+	c                 builder.BuilderClient
+	ctx               context.Context
+	cancel            context.CancelFunc
+	registrationCache *cache.RegistrationCache
 }
 
 // NewService instantiates a new service.
@@ -77,7 +81,8 @@ func (s *Service) Start() {
 }
 
 // Stop halts the service.
-func (*Service) Stop() error {
+func (s *Service) Stop() error {
+	s.cancel()
 	return nil
 }
 
@@ -89,6 +94,9 @@ func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlyS
 	defer func() {
 		submitBlindedBlockLatency.Observe(float64(time.Since(start).Milliseconds()))
 	}()
+	if s.c == nil {
+		return nil, ErrNoBuilder
+	}
 
 	return s.c.SubmitBlindedBlock(ctx, b)
 }
@@ -101,8 +109,14 @@ func (s *Service) GetHeader(ctx context.Context, slot primitives.Slot, parentHas
 	defer func() {
 		getHeaderLatency.Observe(float64(time.Since(start).Milliseconds()))
 	}()
+	if s.c == nil {
+		tracing.AnnotateError(span, ErrNoBuilder)
+		return nil, ErrNoBuilder
+	}
 
-	return s.c.GetHeader(ctx, slot, parentHash, pubKey)
+	h, err := s.c.GetHeader(ctx, slot, parentHash, pubKey)
+	tracing.AnnotateError(span, err)
+	return h, err
 }
 
 // Status retrieves the status of the builder relay network.
@@ -124,9 +138,16 @@ func (s *Service) RegisterValidator(ctx context.Context, reg []*ethpb.SignedVali
 	defer func() {
 		registerValidatorLatency.Observe(float64(time.Since(start).Milliseconds()))
 	}()
+	if s.c == nil {
+		return ErrNoBuilder
+	}
 
+	// should be removed if db is removed
 	idxs := make([]primitives.ValidatorIndex, 0)
 	msgs := make([]*ethpb.ValidatorRegistrationV1, 0)
+
+	indexToRegistration := make(map[primitives.ValidatorIndex]*ethpb.ValidatorRegistrationV1)
+
 	valid := make([]*ethpb.SignedValidatorRegistrationV1, 0)
 	for i := 0; i < len(reg); i++ {
 		r := reg[i]
@@ -140,12 +161,33 @@ func (s *Service) RegisterValidator(ctx context.Context, reg []*ethpb.SignedVali
 		idxs = append(idxs, nx)
 		msgs = append(msgs, r.Message)
 		valid = append(valid, r)
+		indexToRegistration[nx] = r.Message
 	}
 	if err := s.c.RegisterValidator(ctx, valid); err != nil {
 		return errors.Wrap(err, "could not register validator(s)")
 	}
 
-	return s.cfg.beaconDB.SaveRegistrationsByValidatorIDs(ctx, idxs, msgs)
+	if len(indexToRegistration) != len(msgs) {
+		return errors.New("ids and registrations must be the same length")
+	}
+	if s.registrationCache != nil {
+		s.registrationCache.UpdateIndexToRegisteredMap(ctx, indexToRegistration)
+		return nil
+	} else {
+		return s.cfg.beaconDB.SaveRegistrationsByValidatorIDs(ctx, idxs, msgs)
+	}
+}
+
+// RegistrationByValidatorID returns either the values from the cache or db.
+func (s *Service) RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error) {
+	if s.registrationCache != nil {
+		return s.registrationCache.RegistrationByIndex(id)
+	} else {
+		if s.cfg == nil || s.cfg.beaconDB == nil {
+			return nil, errors.New("nil beacon db")
+		}
+		return s.cfg.beaconDB.RegistrationByValidatorID(ctx, id)
+	}
 }
 
 // Configured returns true if the user has configured a builder client.

beacon-chain/builder/service_test.go

@@ -37,3 +37,18 @@ func Test_RegisterValidator(t *testing.T) {
 	require.NoError(t, s.RegisterValidator(ctx, []*eth.SignedValidatorRegistrationV1{{Message: &eth.ValidatorRegistrationV1{Pubkey: pubkey[:], FeeRecipient: feeRecipient[:]}}}))
 	assert.Equal(t, true, builder.RegisteredVals[pubkey])
 }
+
+func Test_BuilderMethodsWithouClient(t *testing.T) {
+	s, err := NewService(context.Background())
+	require.NoError(t, err)
+	assert.Equal(t, false, s.Configured())
+
+	_, err = s.GetHeader(context.Background(), 0, [32]byte{}, [48]byte{})
+	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
+
+	_, err = s.SubmitBlindedBlock(context.Background(), nil)
+	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
+
+	err = s.RegisterValidator(context.Background(), nil)
+	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
+}

beacon-chain/builder/testing/BUILD.bazel

@@ -8,6 +8,8 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//api/client/builder:go_default_library",
+        "//beacon-chain/cache:go_default_library",
+        "//beacon-chain/db:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",

beacon-chain/builder/testing/mock.go

@@ -2,10 +2,11 @@ package testing
 
 import (
 	"context"
-	"math/big"
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/api/client/builder"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
@@ -15,6 +16,11 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 )
 
+// Config defines a config struct for dependencies into the service.
+type Config struct {
+	BeaconDB db.HeadAccessDatabase
+}
+
 // MockBuilderService to mock builder.
 type MockBuilderService struct {
 	HasConfigured         bool
@@ -23,8 +29,10 @@ type MockBuilderService struct {
 	ErrSubmitBlindedBlock error
 	Bid                   *ethpb.SignedBuilderBid
 	BidCapella            *ethpb.SignedBuilderBidCapella
+	RegistrationCache     *cache.RegistrationCache
 	ErrGetHeader          error
 	ErrRegisterValidator  error
+	Cfg                   *Config
 }
 
 // Configured for mocking.
@@ -41,7 +49,7 @@ func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, _ interfaces.
 		}
 		return w, s.ErrSubmitBlindedBlock
 	}
-	w, err := blocks.WrappedExecutionPayloadCapella(s.PayloadCapella, big.NewInt(0))
+	w, err := blocks.WrappedExecutionPayloadCapella(s.PayloadCapella, 0)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not wrap capella payload")
 	}
@@ -49,8 +57,8 @@ func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, _ interfaces.
 }
 
 // GetHeader for mocking.
-func (s *MockBuilderService) GetHeader(ctx context.Context, slot primitives.Slot, hr [32]byte, pb [48]byte) (builder.SignedBid, error) {
-	if slots.ToEpoch(slot) >= params.BeaconConfig().CapellaForkEpoch {
+func (s *MockBuilderService) GetHeader(_ context.Context, slot primitives.Slot, _ [32]byte, _ [48]byte) (builder.SignedBid, error) {
+	if slots.ToEpoch(slot) >= params.BeaconConfig().CapellaForkEpoch || s.BidCapella != nil {
 		return builder.WrappedSignedBuilderBidCapella(s.BidCapella)
 	}
 	w, err := builder.WrappedSignedBuilderBid(s.Bid)
@@ -60,6 +68,17 @@ func (s *MockBuilderService) GetHeader(ctx context.Context, slot primitives.Slot
 	return w, s.ErrGetHeader
 }
 
+// RegistrationByValidatorID returns either the values from the cache or db.
+func (s *MockBuilderService) RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error) {
+	if s.RegistrationCache != nil {
+		return s.RegistrationCache.RegistrationByIndex(id)
+	}
+	if s.Cfg.BeaconDB != nil {
+		return s.Cfg.BeaconDB.RegistrationByValidatorID(ctx, id)
+	}
+	return nil, cache.ErrNotFoundRegistration
+}
+
 // RegisterValidator for mocking.
 func (s *MockBuilderService) RegisterValidator(context.Context, []*ethpb.SignedValidatorRegistrationV1) error {
 	return s.ErrRegisterValidator

beacon-chain/cache/BUILD.bazel

@@ -17,6 +17,7 @@ go_library(
         "proposer_indices.go",
         "proposer_indices_disabled.go",  # keep
         "proposer_indices_type.go",
+        "registration.go",
         "skip_slot_cache.go",
         "subnet_ids.go",
         "sync_committee.go",
@@ -47,6 +48,7 @@ go_library(
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
         "@io_k8s_client_go//tools/cache:go_default_library",
         "@io_opencensus_go//trace:go_default_library",
     ],
@@ -64,6 +66,7 @@ go_test(
         "committee_test.go",
         "payload_id_test.go",
         "proposer_indices_test.go",
+        "registration_test.go",
         "skip_slot_cache_test.go",
         "subnet_ids_test.go",
         "sync_committee_head_state_test.go",
@@ -82,7 +85,9 @@ go_test(
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
+        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )

beacon-chain/cache/active_balance.go

@@ -42,9 +42,16 @@ type BalanceCache struct {
 
 // NewEffectiveBalanceCache creates a new effective balance cache for storing/accessing total balance by epoch.
 func NewEffectiveBalanceCache() *BalanceCache {
-	return &BalanceCache{
-		cache: lruwrpr.New(maxBalanceCacheSize),
-	}
+	c := &BalanceCache{}
+	c.Clear()
+	return c
+}
+
+// Clear resets the SyncCommitteeCache to its initial state
+func (c *BalanceCache) Clear() {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	c.cache = lruwrpr.New(maxBalanceCacheSize)
 }
 
 // AddTotalEffectiveBalance adds a new total effective balance entry for current balance for state `st` into the cache.

beacon-chain/cache/active_balance_disabled.go

@@ -3,16 +3,11 @@
 package cache
 
 import (
-	"sync"
-
-	lru "github.com/hashicorp/golang-lru"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 )
 
 // FakeBalanceCache is a fake struct with 1 LRU cache for looking up balance by epoch.
 type FakeBalanceCache struct {
-	cache *lru.Cache
-	lock  sync.RWMutex
 }
 
 // NewEffectiveBalanceCache creates a new effective balance cache for storing/accessing total balance by epoch.
@@ -29,3 +24,8 @@ func (c *FakeBalanceCache) AddTotalEffectiveBalance(st state.ReadOnlyBeaconState
 func (c *FakeBalanceCache) Get(st state.ReadOnlyBeaconState) (uint64, error) {
 	return 0, nil
 }
+
+// Clear is a stub.
+func (c *FakeBalanceCache) Clear() {
+	return
+}

beacon-chain/cache/committee.go

@@ -56,10 +56,17 @@ func committeeKeyFn(obj interface{}) (string, error) {
 
 // NewCommitteesCache creates a new committee cache for storing/accessing shuffled indices of a committee.
 func NewCommitteesCache() *CommitteeCache {
-	return &CommitteeCache{
-		CommitteeCache: lruwrpr.New(maxCommitteesCacheSize),
-		inProgress:     make(map[string]bool),
-	}
+	cc := &CommitteeCache{}
+	cc.Clear()
+	return cc
+}
+
+// Clear resets the CommitteeCache to its initial state
+func (c *CommitteeCache) Clear() {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	c.CommitteeCache = lruwrpr.New(maxCommitteesCacheSize)
+	c.inProgress = make(map[string]bool)
 }
 
 // Committee fetches the shuffled indices by slot and committee index. Every list of indices

beacon-chain/cache/committee_disabled.go

@@ -69,3 +69,8 @@ func (c *FakeCommitteeCache) MarkInProgress(seed [32]byte) error {
 func (c *FakeCommitteeCache) MarkNotInProgress(seed [32]byte) error {
 	return nil
 }
+
+// Clear is a stub.
+func (c *FakeCommitteeCache) Clear() {
+	return
+}

beacon-chain/cache/depositcache/deposits_cache.go

@@ -129,7 +129,7 @@ func (dc *DepositCache) InsertDepositContainers(ctx context.Context, ctrs []*eth
 }
 
 // InsertFinalizedDeposits inserts deposits up to eth1DepositIndex (inclusive) into the finalized deposits cache.
-func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1DepositIndex int64) {
+func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1DepositIndex int64) error {
 	ctx, span := trace.StartSpan(ctx, "DepositsCache.InsertFinalizedDeposits")
 	defer span.End()
 	dc.depositsLock.Lock()
@@ -141,7 +141,7 @@ func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1Deposit
 	// Don't insert into finalized trie if there is no deposit to
 	// insert.
 	if len(dc.deposits) == 0 {
-		return
+		return nil
 	}
 	// In the event we have less deposits than we need to
 	// finalize we finalize till the index on which we do have it.
@@ -151,7 +151,7 @@ func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1Deposit
 	// If we finalize to some lower deposit index, we
 	// ignore it.
 	if int(eth1DepositIndex) < insertIndex {
-		return
+		return nil
 	}
 	for _, d := range dc.deposits {
 		if d.Index <= dc.finalizedDeposits.MerkleTrieIndex {
@@ -162,12 +162,10 @@ func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1Deposit
 		}
 		depHash, err := d.Deposit.Data.HashTreeRoot()
 		if err != nil {
-			log.WithError(err).Error("Could not hash deposit data. Finalized deposit cache not updated.")
-			return
+			return errors.Wrap(err, "could not hash deposit data")
 		}
 		if err = depositTrie.Insert(depHash[:], insertIndex); err != nil {
-			log.WithError(err).Error("Could not insert deposit hash")
-			return
+			return errors.Wrap(err, "could not insert deposit hash")
 		}
 		insertIndex++
 	}
@@ -176,6 +174,7 @@ func (dc *DepositCache) InsertFinalizedDeposits(ctx context.Context, eth1Deposit
 		Deposits:        depositTrie,
 		MerkleTrieIndex: eth1DepositIndex,
 	}
+	return nil
 }
 
 // AllDepositContainers returns all historical deposit containers.

beacon-chain/cache/depositcache/deposits_cache_test.go

@@ -416,7 +416,7 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 		Index: 3,
 	})
 
-	dc.InsertFinalizedDeposits(context.Background(), 2)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 2))
 
 	cachedDeposits := dc.FinalizedDeposits(context.Background())
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
@@ -474,9 +474,9 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 		Index: 2,
 	}
 	dc.deposits = oldFinalizedDeposits
-	dc.InsertFinalizedDeposits(context.Background(), 1)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 1))
 
-	dc.InsertFinalizedDeposits(context.Background(), 2)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 2))
 
 	dc.deposits = append(dc.deposits, []*ethpb.DepositContainer{newFinalizedDeposit}...)
 
@@ -503,7 +503,7 @@ func TestFinalizedDeposits_HandleZeroDeposits(t *testing.T) {
 	dc, err := New()
 	require.NoError(t, err)
 
-	dc.InsertFinalizedDeposits(context.Background(), 2)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 2))
 
 	cachedDeposits := dc.FinalizedDeposits(context.Background())
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
@@ -548,7 +548,7 @@ func TestFinalizedDeposits_HandleSmallerThanExpectedDeposits(t *testing.T) {
 	}
 	dc.deposits = finalizedDeposits
 
-	dc.InsertFinalizedDeposits(context.Background(), 5)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 5))
 
 	cachedDeposits := dc.FinalizedDeposits(context.Background())
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
@@ -623,10 +623,10 @@ func TestFinalizedDeposits_HandleLowerEth1DepositIndex(t *testing.T) {
 	}
 	dc.deposits = finalizedDeposits
 
-	dc.InsertFinalizedDeposits(context.Background(), 5)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 5))
 
 	// Reinsert finalized deposits with a lower index.
-	dc.InsertFinalizedDeposits(context.Background(), 2)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 2))
 
 	cachedDeposits := dc.FinalizedDeposits(context.Background())
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
@@ -694,7 +694,7 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			},
 			Index: 3,
 		})
-	dc.InsertFinalizedDeposits(context.Background(), 1)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 1))
 
 	deps := dc.NonFinalizedDeposits(context.Background(), 1, nil)
 	assert.Equal(t, 2, len(deps))
@@ -751,7 +751,7 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			},
 			Index: 3,
 		})
-	dc.InsertFinalizedDeposits(context.Background(), 1)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 1))
 
 	deps := dc.NonFinalizedDeposits(context.Background(), 1, big.NewInt(10))
 	assert.Equal(t, 1, len(deps))
@@ -799,12 +799,12 @@ func TestFinalizedDeposits_ReturnsTrieCorrectly(t *testing.T) {
 	assert.NoError(t, err)
 
 	// Perform this in a non-sensical ordering
-	dc.InsertFinalizedDeposits(context.Background(), 10)
-	dc.InsertFinalizedDeposits(context.Background(), 2)
-	dc.InsertFinalizedDeposits(context.Background(), 3)
-	dc.InsertFinalizedDeposits(context.Background(), 4)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 10))
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 2))
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 3))
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 4))
 
-	// Mimick finalized deposit trie fetch.
+	// Mimic finalized deposit trie fetch.
 	fd := dc.FinalizedDeposits(context.Background())
 	deps := dc.NonFinalizedDeposits(context.Background(), fd.MerkleTrieIndex, big.NewInt(14))
 	insertIndex := fd.MerkleTrieIndex + 1
@@ -817,9 +817,9 @@ func TestFinalizedDeposits_ReturnsTrieCorrectly(t *testing.T) {
 		}
 		insertIndex++
 	}
-	dc.InsertFinalizedDeposits(context.Background(), 15)
-	dc.InsertFinalizedDeposits(context.Background(), 15)
-	dc.InsertFinalizedDeposits(context.Background(), 14)
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 15))
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 15))
+	require.NoError(t, dc.InsertFinalizedDeposits(context.Background(), 14))
 
 	fd = dc.FinalizedDeposits(context.Background())
 	deps = dc.NonFinalizedDeposits(context.Background(), fd.MerkleTrieIndex, big.NewInt(30))

beacon-chain/cache/error.go

@@ -1,6 +1,6 @@
 package cache
 
-import "errors"
+import "github.com/pkg/errors"
 
 var (
 	// ErrNilValueProvided for when we try to put a nil value in a cache.
@@ -12,4 +12,6 @@ var (
 	// ErrNonExistingSyncCommitteeKey when sync committee key (root) does not exist in cache.
 	ErrNonExistingSyncCommitteeKey   = errors.New("does not exist sync committee key")
 	errNotSyncCommitteeIndexPosition = errors.New("not syncCommitteeIndexPosition struct")
+	// ErrNotFoundRegistration when validator registration does not exist in cache.
+	ErrNotFoundRegistration = errors.Wrap(ErrNotFound, "no validator registered")
 )

beacon-chain/cache/proposer_indices.go

@@ -46,9 +46,16 @@ func proposerIndicesKeyFn(obj interface{}) (string, error) {
 
 // NewProposerIndicesCache creates a new proposer indices cache for storing/accessing proposer index assignments of an epoch.
 func NewProposerIndicesCache() *ProposerIndicesCache {
-	return &ProposerIndicesCache{
-		proposerIndicesCache: cache.NewFIFO(proposerIndicesKeyFn),
-	}
+	c := &ProposerIndicesCache{}
+	c.Clear()
+	return c
+}
+
+// Clear resets the ProposerIndicesCache to its initial state
+func (c *ProposerIndicesCache) Clear() {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	c.proposerIndicesCache = cache.NewFIFO(proposerIndicesKeyFn)
 }
 
 // AddProposerIndices adds ProposerIndices object to the cache.

beacon-chain/cache/proposer_indices_disabled.go

@@ -33,3 +33,7 @@ func (c *FakeProposerIndicesCache) HasProposerIndices(r [32]byte) (bool, error)
 func (c *FakeProposerIndicesCache) Len() int {
 	return 0
 }
+
+// Clear is a stub.
+func (c *FakeProposerIndicesCache) Clear() {
+}

beacon-chain/cache/registration.go

@@ -0,0 +1,82 @@
+package cache
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/math"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	log "github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
+)
+
+// RegistrationCache is used to store the cached results of an Validator Registration request.
+// beacon api /eth/v1/validator/register_validator
+type RegistrationCache struct {
+	indexToRegistration map[primitives.ValidatorIndex]*ethpb.ValidatorRegistrationV1
+	lock                sync.RWMutex
+}
+
+// NewRegistrationCache initializes the map and underlying cache.
+func NewRegistrationCache() *RegistrationCache {
+	return &RegistrationCache{
+		indexToRegistration: make(map[primitives.ValidatorIndex]*ethpb.ValidatorRegistrationV1),
+		lock:                sync.RWMutex{},
+	}
+}
+
+// RegistrationByIndex returns the registration by index in the cache and also removes items in the cache if expired.
+func (regCache *RegistrationCache) RegistrationByIndex(id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error) {
+	regCache.lock.RLock()
+	v, ok := regCache.indexToRegistration[id]
+	if !ok {
+		regCache.lock.RUnlock()
+		return nil, errors.Wrapf(ErrNotFoundRegistration, "validator id %d", id)
+	}
+	isExpired, err := RegistrationTimeStampExpired(v.Timestamp)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to check registration expiration")
+	}
+	if isExpired {
+		regCache.lock.RUnlock()
+		regCache.lock.Lock()
+		defer regCache.lock.Unlock()
+		delete(regCache.indexToRegistration, id)
+		log.Warnf("registration for validator index %d expired at unix time %d", id, v.Timestamp)
+		return nil, errors.Wrapf(ErrNotFoundRegistration, "validator id %d", id)
+	}
+	regCache.lock.RUnlock()
+	return v, nil
+}
+
+func RegistrationTimeStampExpired(ts uint64) (bool, error) {
+	// safely convert unint64 to int64
+	i, err := math.Int(ts)
+	if err != nil {
+		return false, err
+	}
+	expiryDuration := params.BeaconConfig().RegistrationDuration
+	// registered time + expiration duration < current time = expired
+	return time.Unix(int64(i), 0).Add(expiryDuration).Before(time.Now()), nil
+}
+
+// UpdateIndexToRegisteredMap adds or updates values in the cache based on the argument.
+func (regCache *RegistrationCache) UpdateIndexToRegisteredMap(ctx context.Context, m map[primitives.ValidatorIndex]*ethpb.ValidatorRegistrationV1) {
+	_, span := trace.StartSpan(ctx, "RegistrationCache.UpdateIndexToRegisteredMap")
+	defer span.End()
+	regCache.lock.Lock()
+	defer regCache.lock.Unlock()
+	for key, value := range m {
+		regCache.indexToRegistration[key] = &ethpb.ValidatorRegistrationV1{
+			Pubkey:       bytesutil.SafeCopyBytes(value.Pubkey),
+			FeeRecipient: bytesutil.SafeCopyBytes(value.FeeRecipient),
+			GasLimit:     value.GasLimit,
+			Timestamp:    value.Timestamp,
+		}
+	}
+}

beacon-chain/cache/registration_test.go

@@ -0,0 +1,82 @@
+package cache
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	logTest "github.com/sirupsen/logrus/hooks/test"
+)
+
+func TestRegistrationCache(t *testing.T) {
+	hook := logTest.NewGlobal()
+	pubkey, err := hexutil.Decode("0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
+	require.NoError(t, err)
+	validatorIndex := primitives.ValidatorIndex(1)
+	cache := NewRegistrationCache()
+	m := make(map[primitives.ValidatorIndex]*ethpb.ValidatorRegistrationV1)
+
+	m[validatorIndex] = &ethpb.ValidatorRegistrationV1{
+		FeeRecipient: []byte{},
+		GasLimit:     100,
+		Timestamp:    uint64(time.Now().Unix()),
+		Pubkey:       pubkey,
+	}
+	cache.UpdateIndexToRegisteredMap(context.Background(), m)
+	reg, err := cache.RegistrationByIndex(validatorIndex)
+	require.NoError(t, err)
+	require.Equal(t, string(reg.Pubkey), string(pubkey))
+	t.Run("Registration expired", func(t *testing.T) {
+		validatorIndex2 := primitives.ValidatorIndex(2)
+		overExpirationPadTime := time.Second * time.Duration(params.BeaconConfig().SecondsPerSlot*uint64(params.BeaconConfig().SlotsPerEpoch)*4) // 4 epochs
+		m[validatorIndex2] = &ethpb.ValidatorRegistrationV1{
+			FeeRecipient: []byte{},
+			GasLimit:     100,
+			Timestamp:    uint64(time.Now().Add(-1 * overExpirationPadTime).Unix()),
+			Pubkey:       pubkey,
+		}
+		cache.UpdateIndexToRegisteredMap(context.Background(), m)
+		_, err := cache.RegistrationByIndex(validatorIndex2)
+		require.ErrorContains(t, "no validator registered", err)
+		require.LogsContain(t, hook, "expired")
+	})
+	t.Run("Registration close to expiration still passes", func(t *testing.T) {
+		pubkey, err := hexutil.Decode("0x88247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
+		require.NoError(t, err)
+		validatorIndex2 := primitives.ValidatorIndex(2)
+		overExpirationPadTime := time.Second * time.Duration((params.BeaconConfig().SecondsPerSlot*uint64(params.BeaconConfig().SlotsPerEpoch)*3)-5) // 3 epochs - 5 seconds
+		m[validatorIndex2] = &ethpb.ValidatorRegistrationV1{
+			FeeRecipient: []byte{},
+			GasLimit:     100,
+			Timestamp:    uint64(time.Now().Add(-1 * overExpirationPadTime).Unix()),
+			Pubkey:       pubkey,
+		}
+		cache.UpdateIndexToRegisteredMap(context.Background(), m)
+		reg, err := cache.RegistrationByIndex(validatorIndex2)
+		require.NoError(t, err)
+		require.Equal(t, string(reg.Pubkey), string(pubkey))
+	})
+}
+
+func Test_RegistrationTimeStampExpired(t *testing.T) {
+	// expiration set at 3 epochs
+	t.Run("expired registration", func(t *testing.T) {
+		overExpirationPadTime := time.Second * time.Duration(params.BeaconConfig().SecondsPerSlot*uint64(params.BeaconConfig().SlotsPerEpoch)*4) // 4 epochs
+		ts := uint64(time.Now().Add(-1 * overExpirationPadTime).Unix())
+		isExpired, err := RegistrationTimeStampExpired(ts)
+		require.NoError(t, err)
+		require.Equal(t, true, isExpired)
+	})
+	t.Run("is not expired registration", func(t *testing.T) {
+		overExpirationPadTime := time.Second * time.Duration((params.BeaconConfig().SecondsPerSlot*uint64(params.BeaconConfig().SlotsPerEpoch)*3)-5) // 3 epochs -5 seconds
+		ts := uint64(time.Now().Add(-1 * overExpirationPadTime).Unix())
+		isExpired, err := RegistrationTimeStampExpired(ts)
+		require.NoError(t, err)
+		require.Equal(t, false, isExpired)
+	})
+}

beacon-chain/cache/sync_committee.go

@@ -4,12 +4,14 @@ package cache
 
 import (
 	"sync"
+	"sync/atomic"
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	log "github.com/sirupsen/logrus"
 	"k8s.io/client-go/tools/cache"
 )
 
@@ -31,8 +33,9 @@ var (
 // SyncCommitteeCache utilizes a FIFO cache to sufficiently cache validator position within sync committee.
 // It is thread safe with concurrent read write.
 type SyncCommitteeCache struct {
-	cache *cache.FIFO
-	lock  sync.RWMutex
+	cache   *cache.FIFO
+	lock    sync.RWMutex
+	cleared *atomic.Uint64
 }
 
 // Index position of all validators in sync committee where `currentSyncCommitteeRoot` is the
@@ -51,9 +54,17 @@ type positionInCommittee struct {
 
 // NewSyncCommittee initializes and returns a new SyncCommitteeCache.
 func NewSyncCommittee() *SyncCommitteeCache {
-	return &SyncCommitteeCache{
-		cache: cache.NewFIFO(keyFn),
-	}
+	c := &SyncCommitteeCache{cleared: &atomic.Uint64{}}
+	c.Clear()
+	return c
+}
+
+// Clear resets the SyncCommitteeCache to its initial state
+func (s *SyncCommitteeCache) Clear() {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+	s.cleared.Add(1)
+	s.cache = cache.NewFIFO(keyFn)
 }
 
 // CurrentPeriodIndexPosition returns current period index position of a validator index with respect with
@@ -123,6 +134,10 @@ func (s *SyncCommitteeCache) idxPositionInCommittee(
 // current epoch and next epoch. This should be called when `current_sync_committee` and `next_sync_committee`
 // change and that happens every `EPOCHS_PER_SYNC_COMMITTEE_PERIOD`.
 func (s *SyncCommitteeCache) UpdatePositionsInCommittee(syncCommitteeBoundaryRoot [32]byte, st state.BeaconState) error {
+	// since we call UpdatePositionsInCommittee asynchronously, keep track of the cache value
+	// seen at the beginning of the routine and compare at the end before updating. If the underlying value has been
+	// cycled (new address), don't update it.
+	clearCount := s.cleared.Load()
 	csc, err := st.CurrentSyncCommittee()
 	if err != nil {
 		return err
@@ -162,6 +177,10 @@ func (s *SyncCommitteeCache) UpdatePositionsInCommittee(syncCommitteeBoundaryRoo
 
 	s.lock.Lock()
 	defer s.lock.Unlock()
+	if clearCount != s.cleared.Load() {
+		log.Warn("cache rotated during async committee update operation - abandoning cache update")
+		return nil
+	}
 
 	if err := s.cache.Add(&syncCommitteeIndexPosition{
 		currentSyncCommitteeRoot: syncCommitteeBoundaryRoot,

beacon-chain/cache/sync_committee_disabled.go

@@ -30,3 +30,8 @@ func (s *FakeSyncCommitteeCache) NextPeriodIndexPosition(root [32]byte, valIdx p
 func (s *FakeSyncCommitteeCache) UpdatePositionsInCommittee(syncCommitteeBoundaryRoot [32]byte, state state.BeaconState) error {
 	return nil
 }
+
+// Clear -- fake.
+func (s *FakeSyncCommitteeCache) Clear() {
+	return
+}

beacon-chain/core/altair/epoch_precompute.go

@@ -208,7 +208,7 @@ func ProcessEpochParticipation(
 }
 
 // ProcessRewardsAndPenaltiesPrecompute processes the rewards and penalties of individual validator.
-// This is an optimized version by passing in precomputed validator attesting records and and total epoch balances.
+// This is an optimized version by passing in precomputed validator attesting records and total epoch balances.
 func ProcessRewardsAndPenaltiesPrecompute(
 	beaconState state.BeaconState,
 	bal *precompute.Balance,
@@ -265,7 +265,7 @@ func AttestationsDelta(beaconState state.BeaconState, bal *precompute.Balance, v
 	finalizedEpoch := beaconState.FinalizedCheckpointEpoch()
 	increment := cfg.EffectiveBalanceIncrement
 	factor := cfg.BaseRewardFactor
-	baseRewardMultiplier := increment * factor / math.IntegerSquareRoot(bal.ActiveCurrentEpoch)
+	baseRewardMultiplier := increment * factor / math.CachedSquareRoot(bal.ActiveCurrentEpoch)
 	leak := helpers.IsInInactivityLeak(prevEpoch, finalizedEpoch)
 
 	// Modified in Altair and Bellatrix.

beacon-chain/core/altair/epoch_spec.go

@@ -12,6 +12,7 @@ import (
 
 // ProcessSyncCommitteeUpdates  processes sync client committee updates for the beacon state.
 //
+// nolint:dupword
 // Spec code:
 // def process_sync_committee_updates(state: BeaconState) -> None:
 //
@@ -45,6 +46,7 @@ func ProcessSyncCommitteeUpdates(ctx context.Context, beaconState state.BeaconSt
 
 // ProcessParticipationFlagUpdates processes participation flag updates by rotating current to previous.
 //
+// nolint:dupword
 // Spec code:
 // def process_participation_flag_updates(state: BeaconState) -> None:
 //

beacon-chain/core/altair/reward.go

@@ -58,5 +58,5 @@ func BaseRewardPerIncrement(activeBalance uint64) (uint64, error) {
 		return 0, errors.New("active balance can't be 0")
 	}
 	cfg := params.BeaconConfig()
-	return cfg.EffectiveBalanceIncrement * cfg.BaseRewardFactor / math.IntegerSquareRoot(activeBalance), nil
+	return cfg.EffectiveBalanceIncrement * cfg.BaseRewardFactor / math.CachedSquareRoot(activeBalance), nil
 }

beacon-chain/core/blocks/BUILD.bazel

@@ -28,6 +28,7 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",

beacon-chain/core/blocks/payload.go

@@ -7,6 +7,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
+	consensus_types "github.com/prysmaticlabs/prysm/v4/consensus-types"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
@@ -60,7 +61,7 @@ func IsExecutionBlock(body interfaces.ReadOnlyBeaconBlockBody) (bool, error) {
 	}
 	payload, err := body.Execution()
 	switch {
-	case errors.Is(err, blocks.ErrUnsupportedGetter):
+	case errors.Is(err, consensus_types.ErrUnsupportedGetter):
 		return false, nil
 	case err != nil:
 		return false, err

beacon-chain/core/blocks/payload_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"math/big"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
@@ -610,7 +609,7 @@ func Test_ProcessPayloadCapella(t *testing.T) {
 	random, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
 	require.NoError(t, err)
 	payload.PrevRandao = random
-	wrapped, err := consensusblocks.WrappedExecutionPayloadCapella(payload, big.NewInt(0))
+	wrapped, err := consensusblocks.WrappedExecutionPayloadCapella(payload, 0)
 	require.NoError(t, err)
 	_, err = blocks.ProcessPayload(st, wrapped)
 	require.NoError(t, err)
@@ -874,7 +873,7 @@ func emptyPayloadHeaderCapella() (interfaces.ExecutionData, error) {
 		TransactionsRoot: make([]byte, fieldparams.RootLength),
 		WithdrawalsRoot:  make([]byte, fieldparams.RootLength),
 		ExtraData:        make([]byte, 0),
-	}, big.NewInt(0))
+	}, 0)
 }
 
 func emptyPayload() *enginev1.ExecutionPayload {

beacon-chain/core/blocks/withdrawals_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"math/big"
 	"math/rand"
 	"testing"
 
@@ -644,7 +643,7 @@ func TestProcessBlindWithdrawals(t *testing.T) {
 			require.NoError(t, err)
 			wdRoot, err := ssz.WithdrawalSliceRoot(test.Args.Withdrawals, fieldparams.MaxWithdrawalsPerPayload)
 			require.NoError(t, err)
-			p, err := consensusblocks.WrappedExecutionPayloadHeaderCapella(&enginev1.ExecutionPayloadHeaderCapella{WithdrawalsRoot: wdRoot[:]}, big.NewInt(0))
+			p, err := consensusblocks.WrappedExecutionPayloadHeaderCapella(&enginev1.ExecutionPayloadHeaderCapella{WithdrawalsRoot: wdRoot[:]}, 0)
 			require.NoError(t, err)
 			post, err := blocks.ProcessWithdrawals(st, p)
 			if test.Control.ExpectedError {
@@ -1062,7 +1061,7 @@ func TestProcessWithdrawals(t *testing.T) {
 			}
 			st, err := prepareValidators(spb, test.Args)
 			require.NoError(t, err)
-			p, err := consensusblocks.WrappedExecutionPayloadCapella(&enginev1.ExecutionPayloadCapella{Withdrawals: test.Args.Withdrawals}, big.NewInt(0))
+			p, err := consensusblocks.WrappedExecutionPayloadCapella(&enginev1.ExecutionPayloadCapella{Withdrawals: test.Args.Withdrawals}, 0)
 			require.NoError(t, err)
 			post, err := blocks.ProcessWithdrawals(st, p)
 			if test.Control.ExpectedError {

beacon-chain/core/epoch/epoch_processing.go

@@ -393,6 +393,7 @@ func ProcessHistoricalDataUpdate(state state.BeaconState) (state.BeaconState, er
 
 // ProcessParticipationRecordUpdates rotates current/previous epoch attestations during epoch processing.
 //
+// nolint:dupword
 // Spec pseudocode definition:
 //
 //	def process_participation_record_updates(state: BeaconState) -> None:

beacon-chain/core/epoch/precompute/reward_penalty.go

@@ -14,7 +14,7 @@ type attesterRewardsFunc func(state.ReadOnlyBeaconState, *Balance, []*Validator)
 type proposerRewardsFunc func(state.ReadOnlyBeaconState, *Balance, []*Validator) ([]uint64, error)
 
 // ProcessRewardsAndPenaltiesPrecompute processes the rewards and penalties of individual validator.
-// This is an optimized version by passing in precomputed validator attesting records and and total epoch balances.
+// This is an optimized version by passing in precomputed validator attesting records and total epoch balances.
 func ProcessRewardsAndPenaltiesPrecompute(
 	state state.BeaconState,
 	pBal *Balance,
@@ -72,7 +72,7 @@ func AttestationsDelta(state state.ReadOnlyBeaconState, pBal *Balance, vp []*Val
 	prevEpoch := time.PrevEpoch(state)
 	finalizedEpoch := state.FinalizedCheckpointEpoch()
 
-	sqrtActiveCurrentEpoch := math.IntegerSquareRoot(pBal.ActiveCurrentEpoch)
+	sqrtActiveCurrentEpoch := math.CachedSquareRoot(pBal.ActiveCurrentEpoch)
 	for i, v := range vp {
 		rewards[i], penalties[i] = attestationDelta(pBal, sqrtActiveCurrentEpoch, v, prevEpoch, finalizedEpoch)
 	}
@@ -104,7 +104,6 @@ func attestationDelta(pBal *Balance, sqrtActiveCurrentEpoch uint64, v *Validator
 		} else {
 			rewardNumerator := br * (pBal.PrevEpochAttested / effectiveBalanceIncrement)
 			r += rewardNumerator / currentEpochBalance
-
 		}
 	} else {
 		p += br
@@ -161,7 +160,7 @@ func ProposersDelta(state state.ReadOnlyBeaconState, pBal *Balance, vp []*Valida
 	rewards := make([]uint64, numofVals)
 
 	totalBalance := pBal.ActiveCurrentEpoch
-	balanceSqrt := math.IntegerSquareRoot(totalBalance)
+	balanceSqrt := math.CachedSquareRoot(totalBalance)
 	// Balance square root cannot be 0, this prevents division by 0.
 	if balanceSqrt == 0 {
 		balanceSqrt = 1

beacon-chain/core/feed/state/events.go

@@ -15,12 +15,11 @@ const (
 	BlockProcessed = iota + 1
 	// ChainStarted is sent when enough validators are active to start proposing blocks.
 	ChainStarted
-	// Initialized is sent when the internal beacon node's state is ready to be accessed.
-	Initialized
-	// Synced is sent when the beacon node has completed syncing and is ready to participate in the network.
-	Synced
-	// Reorg is an event sent when the new head state's slot after a block
-	// transition is lower than its previous head state slot value.
+	// deprecated: Initialized is sent when the internal beacon node's state is ready to be accessed.
+	_
+	// deprecated: Synced is sent when the beacon node has completed syncing and is ready to participate in the network.
+	_
+	// Reorg is an event sent when the new head is not a descendant of the previous head.
 	Reorg
 	// FinalizedCheckpoint event.
 	FinalizedCheckpoint

beacon-chain/core/helpers/BUILD.bazel

@@ -48,6 +48,7 @@ go_test(
         "attestation_test.go",
         "beacon_committee_test.go",
         "block_test.go",
+        "main_test.go",
         "randao_test.go",
         "rewards_penalties_test.go",
         "shuffle_test.go",
@@ -56,6 +57,7 @@ go_test(
         "weak_subjectivity_test.go",
     ],
     embed = [":go_default_library"],
+    race = "on",
     shard_count = 2,
     deps = [
         "//beacon-chain/cache:go_default_library",

beacon-chain/core/helpers/attestation.go

@@ -183,11 +183,11 @@ func ValidateAttestationTime(attSlot primitives.Slot, genesisTime time.Time, clo
 		currentSlot,
 	)
 	if attTime.Before(lowerBounds) {
-		attReceivedTooEarlyCount.Inc()
+		attReceivedTooLateCount.Inc()
 		return attError
 	}
 	if attTime.After(upperBounds) {
-		attReceivedTooLateCount.Inc()
+		attReceivedTooEarlyCount.Inc()
 		return attError
 	}
 	return nil

beacon-chain/core/helpers/beacon_committee.go

@@ -382,10 +382,10 @@ func UpdateProposerIndicesInCache(ctx context.Context, state state.ReadOnlyBeaco
 
 // ClearCache clears the beacon committee cache and sync committee cache.
 func ClearCache() {
-	committeeCache = cache.NewCommitteesCache()
-	proposerIndicesCache = cache.NewProposerIndicesCache()
-	syncCommitteeCache = cache.NewSyncCommittee()
-	balanceCache = cache.NewEffectiveBalanceCache()
+	committeeCache.Clear()
+	proposerIndicesCache.Clear()
+	syncCommitteeCache.Clear()
+	balanceCache.Clear()
 }
 
 // computeCommittee returns the requested shuffled committee out of the total committees using

beacon-chain/core/helpers/beacon_committee_test.go

@@ -91,6 +91,7 @@ func TestVerifyBitfieldLength_OK(t *testing.T) {
 
 func TestCommitteeAssignments_CannotRetrieveFutureEpoch(t *testing.T) {
 	ClearCache()
+	defer ClearCache()
 	epoch := primitives.Epoch(1)
 	state, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
 		Slot: 0, // Epoch 0.
@@ -101,6 +102,8 @@ func TestCommitteeAssignments_CannotRetrieveFutureEpoch(t *testing.T) {
 }
 
 func TestCommitteeAssignments_NoProposerForSlot0(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, 4*params.BeaconConfig().SlotsPerEpoch)
 	for i := 0; i < len(validators); i++ {
 		var activationEpoch primitives.Epoch
@@ -118,7 +121,6 @@ func TestCommitteeAssignments_NoProposerForSlot0(t *testing.T) {
 		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
 	})
 	require.NoError(t, err)
-	ClearCache()
 	_, proposerIndexToSlots, err := CommitteeAssignments(context.Background(), state, 0)
 	require.NoError(t, err, "Failed to determine CommitteeAssignments")
 	for _, ss := range proposerIndexToSlots {
@@ -188,6 +190,7 @@ func TestCommitteeAssignments_CanRetrieve(t *testing.T) {
 		},
 	}
 
+	defer ClearCache()
 	for i, tt := range tests {
 		t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
 			ClearCache()
@@ -255,6 +258,8 @@ func TestCommitteeAssignments_CannotRetrieveOlderThanSlotsPerHistoricalRoot(t *t
 }
 
 func TestCommitteeAssignments_EverySlotHasMin1Proposer(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	// Initialize test with 256 validators, each slot and each index gets 4 validators.
 	validators := make([]*ethpb.Validator, 4*params.BeaconConfig().SlotsPerEpoch)
 	for i := 0; i < len(validators); i++ {
@@ -269,7 +274,6 @@ func TestCommitteeAssignments_EverySlotHasMin1Proposer(t *testing.T) {
 		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
 	})
 	require.NoError(t, err)
-	ClearCache()
 	epoch := primitives.Epoch(1)
 	_, proposerIndexToSlots, err := CommitteeAssignments(context.Background(), state, epoch)
 	require.NoError(t, err, "Failed to determine CommitteeAssignments")
@@ -376,6 +380,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 		},
 	}
 
+	defer ClearCache()
 	for i, tt := range tests {
 		ClearCache()
 		require.NoError(t, state.SetSlot(tt.stateSlot))
@@ -390,6 +395,7 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 
 func TestUpdateCommitteeCache_CanUpdate(t *testing.T) {
 	ClearCache()
+	defer ClearCache()
 	validatorCount := params.BeaconConfig().MinGenesisActiveValidatorCount
 	validators := make([]*ethpb.Validator, validatorCount)
 	indices := make([]primitives.ValidatorIndex, validatorCount)

beacon-chain/core/helpers/main_test.go

@@ -0,0 +1,13 @@
+package helpers
+
+import (
+	"os"
+	"testing"
+)
+
+// run ClearCache before each test to prevent cross-test side effects
+func TestMain(m *testing.M) {
+	ClearCache()
+	code := m.Run()
+	os.Exit(code)
+}

beacon-chain/core/helpers/rewards_penalties_test.go

@@ -75,6 +75,8 @@ func TestTotalActiveBalance(t *testing.T) {
 }
 
 func TestTotalActiveBal_ReturnMin(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	tests := []struct {
 		vCount int
 	}{
@@ -96,6 +98,8 @@ func TestTotalActiveBal_ReturnMin(t *testing.T) {
 }
 
 func TestTotalActiveBalance_WithCache(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	tests := []struct {
 		vCount    int
 		wantCount int

beacon-chain/core/helpers/sync_committee.go

@@ -25,9 +25,7 @@ var (
 // along with the sync committee root.
 // 1. Checks if the public key exists in the sync committee cache
 // 2. If 1 fails, checks if the public key exists in the input current sync committee object
-func IsCurrentPeriodSyncCommittee(
-	st state.BeaconState, valIdx primitives.ValidatorIndex,
-) (bool, error) {
+func IsCurrentPeriodSyncCommittee(st state.BeaconState, valIdx primitives.ValidatorIndex) (bool, error) {
 	root, err := syncPeriodBoundaryRoot(st)
 	if err != nil {
 		return false, err
@@ -36,7 +34,7 @@ func IsCurrentPeriodSyncCommittee(
 	if err == cache.ErrNonExistingSyncCommitteeKey {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
-			return false, nil
+			return false, err
 		}
 		committee, err := st.CurrentSyncCommittee()
 		if err != nil {
@@ -73,7 +71,7 @@ func IsNextPeriodSyncCommittee(
 	if err == cache.ErrNonExistingSyncCommitteeKey {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
-			return false, nil
+			return false, err
 		}
 		committee, err := st.NextSyncCommittee()
 		if err != nil {
@@ -100,7 +98,7 @@ func CurrentPeriodSyncSubcommitteeIndices(
 	if err == cache.ErrNonExistingSyncCommitteeKey {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
-			return nil, nil
+			return nil, err
 		}
 		committee, err := st.CurrentSyncCommittee()
 		if err != nil {
@@ -134,7 +132,7 @@ func NextPeriodSyncSubcommitteeIndices(
 	if err == cache.ErrNonExistingSyncCommitteeKey {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
-			return nil, nil
+			return nil, err
 		}
 		committee, err := st.NextSyncCommittee()
 		if err != nil {

beacon-chain/core/helpers/sync_committee_test.go

@@ -17,6 +17,8 @@ import (
 )
 
 func TestIsCurrentEpochSyncCommittee_UsingCache(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -37,7 +39,6 @@ func TestIsCurrentEpochSyncCommittee_UsingCache(t *testing.T) {
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
-	ClearCache()
 	r := [32]byte{'a'}
 	require.NoError(t, err, syncCommitteeCache.UpdatePositionsInCommittee(r, state))
 
@@ -47,6 +48,8 @@ func TestIsCurrentEpochSyncCommittee_UsingCache(t *testing.T) {
 }
 
 func TestIsCurrentEpochSyncCommittee_UsingCommittee(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -73,6 +76,8 @@ func TestIsCurrentEpochSyncCommittee_UsingCommittee(t *testing.T) {
 }
 
 func TestIsCurrentEpochSyncCommittee_DoesNotExist(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -94,11 +99,13 @@ func TestIsCurrentEpochSyncCommittee_DoesNotExist(t *testing.T) {
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
 	ok, err := IsCurrentPeriodSyncCommittee(state, 12390192)
-	require.NoError(t, err)
+	require.ErrorContains(t, "index 12390192 out of range", err)
 	require.Equal(t, false, ok)
 }
 
 func TestIsNextEpochSyncCommittee_UsingCache(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -119,7 +126,6 @@ func TestIsNextEpochSyncCommittee_UsingCache(t *testing.T) {
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
-	ClearCache()
 	r := [32]byte{'a'}
 	require.NoError(t, err, syncCommitteeCache.UpdatePositionsInCommittee(r, state))
 
@@ -176,11 +182,13 @@ func TestIsNextEpochSyncCommittee_DoesNotExist(t *testing.T) {
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
 	ok, err := IsNextPeriodSyncCommittee(state, 120391029)
-	require.NoError(t, err)
+	require.ErrorContains(t, "index 120391029 out of range", err)
 	require.Equal(t, false, ok)
 }
 
 func TestCurrentEpochSyncSubcommitteeIndices_UsingCache(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -201,7 +209,6 @@ func TestCurrentEpochSyncSubcommitteeIndices_UsingCache(t *testing.T) {
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
-	ClearCache()
 	r := [32]byte{'a'}
 	require.NoError(t, err, syncCommitteeCache.UpdatePositionsInCommittee(r, state))
 
@@ -211,6 +218,8 @@ func TestCurrentEpochSyncSubcommitteeIndices_UsingCache(t *testing.T) {
 }
 
 func TestCurrentEpochSyncSubcommitteeIndices_UsingCommittee(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -230,7 +239,6 @@ func TestCurrentEpochSyncSubcommitteeIndices_UsingCommittee(t *testing.T) {
 	require.NoError(t, err)
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
-
 	root, err := syncPeriodBoundaryRoot(state)
 	require.NoError(t, err)
 
@@ -252,6 +260,7 @@ func TestCurrentEpochSyncSubcommitteeIndices_UsingCommittee(t *testing.T) {
 
 func TestCurrentEpochSyncSubcommitteeIndices_DoesNotExist(t *testing.T) {
 	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -273,11 +282,13 @@ func TestCurrentEpochSyncSubcommitteeIndices_DoesNotExist(t *testing.T) {
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
 	index, err := CurrentPeriodSyncSubcommitteeIndices(state, 129301923)
-	require.NoError(t, err)
+	require.ErrorContains(t, "index 129301923 out of range", err)
 	require.DeepEqual(t, []primitives.CommitteeIndex(nil), index)
 }
 
 func TestNextEpochSyncSubcommitteeIndices_UsingCache(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -298,7 +309,6 @@ func TestNextEpochSyncSubcommitteeIndices_UsingCache(t *testing.T) {
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
-	ClearCache()
 	r := [32]byte{'a'}
 	require.NoError(t, err, syncCommitteeCache.UpdatePositionsInCommittee(r, state))
 
@@ -335,6 +345,7 @@ func TestNextEpochSyncSubcommitteeIndices_UsingCommittee(t *testing.T) {
 
 func TestNextEpochSyncSubcommitteeIndices_DoesNotExist(t *testing.T) {
 	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -356,7 +367,7 @@ func TestNextEpochSyncSubcommitteeIndices_DoesNotExist(t *testing.T) {
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
 	index, err := NextPeriodSyncSubcommitteeIndices(state, 21093019)
-	require.NoError(t, err)
+	require.ErrorContains(t, "index 21093019 out of range", err)
 	require.DeepEqual(t, []primitives.CommitteeIndex(nil), index)
 }
 
@@ -387,6 +398,8 @@ func TestUpdateSyncCommitteeCache_BadRoot(t *testing.T) {
 }
 
 func TestIsCurrentEpochSyncCommittee_SameBlockRoot(t *testing.T) {
+	ClearCache()
+	defer ClearCache()
 	validators := make([]*ethpb.Validator, params.BeaconConfig().SyncCommitteeSize)
 	syncCommittee := &ethpb.SyncCommittee{
 		AggregatePubkey: bytesutil.PadTo([]byte{}, params.BeaconConfig().BLSPubkeyLength),
@@ -412,7 +425,6 @@ func TestIsCurrentEpochSyncCommittee_SameBlockRoot(t *testing.T) {
 	require.NoError(t, state.SetCurrentSyncCommittee(syncCommittee))
 	require.NoError(t, state.SetNextSyncCommittee(syncCommittee))
 
-	ClearCache()
 	comIdxs, err := CurrentPeriodSyncSubcommitteeIndices(state, 200)
 	require.NoError(t, err)
 

beacon-chain/core/helpers/validators.go

@@ -285,6 +285,7 @@ func BeaconProposerIndex(ctx context.Context, state state.ReadOnlyBeaconState) (
 
 // ComputeProposerIndex returns the index sampled by effective balance, which is used to calculate proposer.
 //
+// nolint:dupword
 // Spec pseudocode definition:
 //
 //	def compute_proposer_index(state: BeaconState, indices: Sequence[ValidatorIndex], seed: Bytes32) -> ValidatorIndex:

beacon-chain/core/helpers/validators_test.go

@@ -179,6 +179,7 @@ func TestIsSlashableValidator_OK(t *testing.T) {
 func TestBeaconProposerIndex_OK(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	ClearCache()
+	defer ClearCache()
 	c := params.BeaconConfig()
 	c.MinGenesisActiveValidatorCount = 16384
 	params.OverrideBeaconConfig(c)
@@ -222,6 +223,7 @@ func TestBeaconProposerIndex_OK(t *testing.T) {
 		},
 	}
 
+	defer ClearCache()
 	for _, tt := range tests {
 		ClearCache()
 		require.NoError(t, state.SetSlot(tt.slot))
@@ -234,6 +236,7 @@ func TestBeaconProposerIndex_OK(t *testing.T) {
 func TestBeaconProposerIndex_BadState(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	ClearCache()
+	defer ClearCache()
 	c := params.BeaconConfig()
 	c.MinGenesisActiveValidatorCount = 16384
 	params.OverrideBeaconConfig(c)
@@ -345,6 +348,7 @@ func TestChurnLimit_OK(t *testing.T) {
 		{validatorCount: 1000000, wantedChurn: 15 /* validatorCount/churnLimitQuotient */},
 		{validatorCount: 2000000, wantedChurn: 30 /* validatorCount/churnLimitQuotient */},
 	}
+	defer ClearCache()
 	for _, test := range tests {
 		ClearCache()
 
@@ -516,6 +520,7 @@ func TestActiveValidatorIndices(t *testing.T) {
 			want: []primitives.ValidatorIndex{0, 2, 3},
 		},
 	}
+	defer ClearCache()
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			s, err := state_native.InitializeFromProtoPhase0(tt.args.state)

beacon-chain/core/transition/trailing_slot_state_cache.go

@@ -5,15 +5,20 @@ import (
 	"context"
 	"sync"
 
+	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
+	types "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 )
 
 type nextSlotCache struct {
-	sync.RWMutex
-	root  []byte
-	state state.BeaconState
+	sync.Mutex
+	prevRoot  []byte
+	lastRoot  []byte
+	prevState state.BeaconState
+	lastState state.BeaconState
 }
 
 var (
@@ -29,19 +34,22 @@ var (
 	})
 )
 
-// NextSlotState returns the saved state if the input root matches the root in `nextSlotCache`. Returns nil otherwise.
-// This is useful to check before processing slots. With a cache hit, it will return last processed state with slot plus
-// one advancement.
-func NextSlotState(_ context.Context, root []byte) (state.BeaconState, error) {
-	nsc.RLock()
-	defer nsc.RUnlock()
-	if !bytes.Equal(root, nsc.root) || bytes.Equal(root, []byte{}) {
-		nextSlotCacheMiss.Inc()
-		return nil, nil
+// NextSlotState returns the saved state for the given blockroot.
+// It returns the last updated state if it matches. Otherwise it returns the previously
+// updated state if it matches its root. If no root matches it returns nil
+func NextSlotState(root []byte, wantedSlot types.Slot) state.BeaconState {
+	nsc.Lock()
+	defer nsc.Unlock()
+	if bytes.Equal(root, nsc.lastRoot) && nsc.lastState.Slot() <= wantedSlot {
+		nextSlotCacheHit.Inc()
+		return nsc.lastState.Copy()
 	}
-	nextSlotCacheHit.Inc()
-	// Returning copied state.
-	return nsc.state.Copy(), nil
+	if bytes.Equal(root, nsc.prevRoot) && nsc.prevState.Slot() <= wantedSlot {
+		nextSlotCacheHit.Inc()
+		return nsc.prevState.Copy()
+	}
+	nextSlotCacheMiss.Inc()
+	return nil
 }
 
 // UpdateNextSlotCache updates the `nextSlotCache`. It saves the input state after advancing the state slot by 1
@@ -52,13 +60,25 @@ func UpdateNextSlotCache(ctx context.Context, root []byte, state state.BeaconSta
 	copied := state.Copy()
 	copied, err := ProcessSlots(ctx, copied, copied.Slot()+1)
 	if err != nil {
-		return err
+		return errors.Wrap(err, "could not process slots")
 	}
 
 	nsc.Lock()
 	defer nsc.Unlock()
 
-	nsc.root = root
-	nsc.state = copied
+	nsc.prevRoot = nsc.lastRoot
+	nsc.prevState = nsc.lastState
+	nsc.lastRoot = bytesutil.SafeCopyBytes(root)
+	nsc.lastState = copied
 	return nil
 }
+
+// LastCachedState returns the last cached state and root in the cache
+func LastCachedState() ([]byte, state.BeaconState) {
+	nsc.Lock()
+	defer nsc.Unlock()
+	if nsc.lastState == nil {
+		return nil, nil
+	}
+	return bytesutil.SafeCopyBytes(nsc.lastRoot), nsc.lastState.Copy()
+}

beacon-chain/core/transition/trailing_slot_state_cache_test.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
 	"github.com/prysmaticlabs/prysm/v4/testing/util"
 )
@@ -13,18 +14,36 @@ import (
 func TestTrailingSlotState_RoundTrip(t *testing.T) {
 	ctx := context.Background()
 	r := []byte{'a'}
-	s, err := transition.NextSlotState(ctx, r)
-	require.NoError(t, err)
+	s := transition.NextSlotState(r, 0)
 	require.Equal(t, nil, s)
 
 	s, _ = util.DeterministicGenesisState(t, 1)
 	require.NoError(t, transition.UpdateNextSlotCache(ctx, r, s))
-	s, err = transition.NextSlotState(ctx, r)
-	require.NoError(t, err)
+	s = transition.NextSlotState(r, 1)
 	require.Equal(t, primitives.Slot(1), s.Slot())
 
+	lastRoot, lastState := transition.LastCachedState()
+	require.DeepEqual(t, r, lastRoot)
+	require.Equal(t, s.Slot(), lastState.Slot())
+
 	require.NoError(t, transition.UpdateNextSlotCache(ctx, r, s))
-	s, err = transition.NextSlotState(ctx, r)
-	require.NoError(t, err)
+	s = transition.NextSlotState(r, 2)
 	require.Equal(t, primitives.Slot(2), s.Slot())
+
+	lastRoot, lastState = transition.LastCachedState()
+	require.DeepEqual(t, r, lastRoot)
+	require.Equal(t, s.Slot(), lastState.Slot())
+}
+
+func TestTrailingSlotState_StateAdvancedBeyondRequest(t *testing.T) {
+	ctx := context.Background()
+	r := []byte{'a'}
+	s := transition.NextSlotState(r, 0)
+	require.Equal(t, nil, s)
+
+	s, _ = util.DeterministicGenesisState(t, 1)
+	assert.NoError(t, s.SetSlot(2))
+	require.NoError(t, transition.UpdateNextSlotCache(ctx, r, s))
+	s = transition.NextSlotState(r, 1)
+	require.Equal(t, nil, s)
 }

beacon-chain/core/transition/transition.go

@@ -147,25 +147,15 @@ func ProcessSlotsUsingNextSlotCache(
 	ctx, span := trace.StartSpan(ctx, "core.state.ProcessSlotsUsingNextSlotCache")
 	defer span.End()
 
-	// Check whether the parent state has been advanced by 1 slot in next slot cache.
-	nextSlotState, err := NextSlotState(ctx, parentRoot)
-	if err != nil {
-		return nil, err
-	}
-	cachedStateExists := nextSlotState != nil && !nextSlotState.IsNil()
-	// If the next slot state is not nil (i.e. cache hit).
-	// We replace next slot state with parent state.
-	if cachedStateExists {
+	nextSlotState := NextSlotState(parentRoot, slot)
+	if nextSlotState != nil {
 		parentState = nextSlotState
 	}
-
-	// In the event our cached state has advanced our
-	// state to the desired slot, we exit early.
-	if cachedStateExists && parentState.Slot() == slot {
+	if parentState.Slot() == slot {
 		return parentState, nil
 	}
-	// Since next slot cache only advances state by 1 slot,
-	// we check if there's more slots that need to process.
+
+	var err error
 	parentState, err = ProcessSlots(ctx, parentState, slot)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process slots")

beacon-chain/core/validators/validator_test.go

@@ -150,7 +150,7 @@ func TestSlashValidator_OK(t *testing.T) {
 
 	maxBalance := params.BeaconConfig().MaxEffectiveBalance
 	slashedBalance := state.Slashings()[state.Slot().Mod(uint64(params.BeaconConfig().EpochsPerSlashingsVector))]
-	assert.Equal(t, maxBalance, slashedBalance, "Slashed balance isnt the expected amount")
+	assert.Equal(t, maxBalance, slashedBalance, "Slashed balance isn't the expected amount")
 
 	whistleblowerReward := slashedBalance / params.BeaconConfig().WhistleBlowerRewardQuotient
 	bal, err := state.BalanceAtIndex(proposer)

beacon-chain/db/kv/blocks_test.go

@@ -3,6 +3,7 @@ package kv
 import (
 	"context"
 	"testing"
+	"time"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/pkg/errors"
@@ -542,7 +543,7 @@ func TestStore_Blocks_Retrieve_SlotRangeWithStep(t *testing.T) {
 			require.NoError(t, err)
 			assert.Equal(t, 150, len(retrieved))
 			for _, b := range retrieved {
-				assert.Equal(t, primitives.Slot(0), (b.Block().Slot()-100)%step, "Unexpect block slot %d", b.Block().Slot())
+				assert.Equal(t, primitives.Slot(0), (b.Block().Slot()-100)%step, "Unexpected block slot %d", b.Block().Slot())
 			}
 		})
 	}
@@ -910,25 +911,25 @@ func TestStore_RegistrationsByValidatorID(t *testing.T) {
 	ids := []primitives.ValidatorIndex{0, 0, 0}
 	regs := []*ethpb.ValidatorRegistrationV1{{}, {}, {}, {}}
 	require.ErrorContains(t, "ids and registrations must be the same length", db.SaveRegistrationsByValidatorIDs(ctx, ids, regs))
-
+	timestamp := time.Now().Unix()
 	ids = []primitives.ValidatorIndex{0, 1, 2}
 	regs = []*ethpb.ValidatorRegistrationV1{
 		{
 			FeeRecipient: bytesutil.PadTo([]byte("a"), 20),
 			GasLimit:     1,
-			Timestamp:    2,
+			Timestamp:    uint64(timestamp),
 			Pubkey:       bytesutil.PadTo([]byte("b"), 48),
 		},
 		{
 			FeeRecipient: bytesutil.PadTo([]byte("c"), 20),
 			GasLimit:     3,
-			Timestamp:    4,
+			Timestamp:    uint64(timestamp),
 			Pubkey:       bytesutil.PadTo([]byte("d"), 48),
 		},
 		{
 			FeeRecipient: bytesutil.PadTo([]byte("e"), 20),
 			GasLimit:     5,
-			Timestamp:    6,
+			Timestamp:    uint64(timestamp),
 			Pubkey:       bytesutil.PadTo([]byte("f"), 48),
 		},
 	}
@@ -938,7 +939,7 @@ func TestStore_RegistrationsByValidatorID(t *testing.T) {
 	require.DeepEqual(t, &ethpb.ValidatorRegistrationV1{
 		FeeRecipient: bytesutil.PadTo([]byte("a"), 20),
 		GasLimit:     1,
-		Timestamp:    2,
+		Timestamp:    uint64(timestamp),
 		Pubkey:       bytesutil.PadTo([]byte("b"), 48),
 	}, f)
 	f, err = db.RegistrationByValidatorID(ctx, 1)
@@ -946,7 +947,7 @@ func TestStore_RegistrationsByValidatorID(t *testing.T) {
 	require.DeepEqual(t, &ethpb.ValidatorRegistrationV1{
 		FeeRecipient: bytesutil.PadTo([]byte("c"), 20),
 		GasLimit:     3,
-		Timestamp:    4,
+		Timestamp:    uint64(timestamp),
 		Pubkey:       bytesutil.PadTo([]byte("d"), 48),
 	}, f)
 	f, err = db.RegistrationByValidatorID(ctx, 2)
@@ -954,7 +955,7 @@ func TestStore_RegistrationsByValidatorID(t *testing.T) {
 	require.DeepEqual(t, &ethpb.ValidatorRegistrationV1{
 		FeeRecipient: bytesutil.PadTo([]byte("e"), 20),
 		GasLimit:     5,
-		Timestamp:    6,
+		Timestamp:    uint64(timestamp),
 		Pubkey:       bytesutil.PadTo([]byte("f"), 48),
 	}, f)
 	_, err = db.RegistrationByValidatorID(ctx, 3)

beacon-chain/db/kv/checkpoint.go

@@ -7,6 +7,7 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/monitoring/tracing"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	bolt "go.etcd.io/bbolt"
 	"go.opencensus.io/trace"
@@ -55,22 +56,7 @@ func (s *Store) SaveJustifiedCheckpoint(ctx context.Context, checkpoint *ethpb.C
 	ctx, span := trace.StartSpan(ctx, "BeaconDB.SaveJustifiedCheckpoint")
 	defer span.End()
 
-	enc, err := encode(ctx, checkpoint)
-	if err != nil {
-		return err
-	}
-	hasStateSummary := s.HasStateSummary(ctx, bytesutil.ToBytes32(checkpoint.Root))
-	return s.db.Update(func(tx *bolt.Tx) error {
-		bucket := tx.Bucket(checkpointBucket)
-		hasStateInDB := tx.Bucket(stateBucket).Get(checkpoint.Root) != nil
-		if !(hasStateInDB || hasStateSummary) {
-			log.Warnf("Recovering state summary for justified root: %#x", bytesutil.Trunc(checkpoint.Root))
-			if err := recoverStateSummary(ctx, tx, checkpoint.Root); err != nil {
-				return errors.Wrapf(errMissingStateForCheckpoint, "could not save justified checkpoint, finalized root: %#x", bytesutil.Trunc(checkpoint.Root))
-			}
-		}
-		return bucket.Put(justifiedCheckpointKey, enc)
-	})
+	return s.saveCheckpoint(ctx, justifiedCheckpointKey, checkpoint)
 }
 
 // SaveFinalizedCheckpoint saves finalized checkpoint in beacon chain.
@@ -80,10 +66,11 @@ func (s *Store) SaveFinalizedCheckpoint(ctx context.Context, checkpoint *ethpb.C
 
 	enc, err := encode(ctx, checkpoint)
 	if err != nil {
+		tracing.AnnotateError(span, err)
 		return err
 	}
 	hasStateSummary := s.HasStateSummary(ctx, bytesutil.ToBytes32(checkpoint.Root))
-	return s.db.Update(func(tx *bolt.Tx) error {
+	err = s.db.Update(func(tx *bolt.Tx) error {
 		bucket := tx.Bucket(checkpointBucket)
 		hasStateInDB := tx.Bucket(stateBucket).Get(checkpoint.Root) != nil
 		if !(hasStateInDB || hasStateSummary) {
@@ -98,6 +85,33 @@ func (s *Store) SaveFinalizedCheckpoint(ctx context.Context, checkpoint *ethpb.C
 
 		return s.updateFinalizedBlockRoots(ctx, tx, checkpoint)
 	})
+	tracing.AnnotateError(span, err)
+	return err
+}
+
+func (s *Store) saveCheckpoint(ctx context.Context, key []byte, checkpoint *ethpb.Checkpoint) error {
+	ctx, span := trace.StartSpan(ctx, "BeaconDB.saveCheckpoint")
+	defer span.End()
+
+	enc, err := encode(ctx, checkpoint)
+	if err != nil {
+		tracing.AnnotateError(span, err)
+		return err
+	}
+	hasStateSummary := s.HasStateSummary(ctx, bytesutil.ToBytes32(checkpoint.Root))
+	err = s.db.Update(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket(checkpointBucket)
+		hasStateInDB := tx.Bucket(stateBucket).Get(checkpoint.Root) != nil
+		if !(hasStateInDB || hasStateSummary) {
+			log.WithField("root", fmt.Sprintf("%#x", bytesutil.Trunc(checkpoint.Root))).Warn("Recovering state summary")
+			if err := recoverStateSummary(ctx, tx, checkpoint.Root); err != nil {
+				return errMissingStateForCheckpoint
+			}
+		}
+		return bucket.Put(key, enc)
+	})
+	tracing.AnnotateError(span, err)
+	return err
 }
 
 // Recovers and saves state summary for a given root if the root has a block in the DB.

beacon-chain/db/kv/state.go

@@ -97,9 +97,8 @@ func (s *Store) GenesisState(ctx context.Context) (state.BeaconState, error) {
 			return valErr
 		}
 
-		var crtErr error
 		st, err = s.unmarshalState(ctx, enc, valEntries)
-		return crtErr
+		return err
 	})
 	if err != nil {
 		return nil, err
@@ -874,5 +873,4 @@ func (s *Store) isStateValidatorMigrationOver() (bool, error) {
 		return returnFlag, err
 	}
 	return returnFlag, nil
-
 }

beacon-chain/db/kv/validated_checkpoint.go

@@ -3,8 +3,6 @@ package kv
 import (
 	"context"
 
-	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	bolt "go.etcd.io/bbolt"
 	"go.opencensus.io/trace"
@@ -34,20 +32,5 @@ func (s *Store) SaveLastValidatedCheckpoint(ctx context.Context, checkpoint *eth
 	ctx, span := trace.StartSpan(ctx, "BeaconDB.SaveLastValidatedCheckpoint")
 	defer span.End()
 
-	enc, err := encode(ctx, checkpoint)
-	if err != nil {
-		return err
-	}
-	hasStateSummary := s.HasStateSummary(ctx, bytesutil.ToBytes32(checkpoint.Root))
-	return s.db.Update(func(tx *bolt.Tx) error {
-		bucket := tx.Bucket(checkpointBucket)
-		hasStateInDB := tx.Bucket(stateBucket).Get(checkpoint.Root) != nil
-		if !(hasStateInDB || hasStateSummary) {
-			log.Warnf("Recovering state summary for last validated root: %#x", bytesutil.Trunc(checkpoint.Root))
-			if err := recoverStateSummary(ctx, tx, checkpoint.Root); err != nil {
-				return errors.Wrapf(errMissingStateForCheckpoint, "could not save finalized checkpoint, last validated root: %#x", bytesutil.Trunc(checkpoint.Root))
-			}
-		}
-		return bucket.Put(lastValidatedCheckpointKey, enc)
-	})
+	return s.saveCheckpoint(ctx, lastValidatedCheckpointKey, checkpoint)
 }

beacon-chain/execution/BUILD.bazel

@@ -14,7 +14,6 @@ go_library(
         "metrics.go",
         "options.go",
         "prometheus.go",
-        "provider.go",
         "rpc_connection.go",
         "service.go",
     ],
@@ -49,6 +48,7 @@ go_library(
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//io/logs:go_default_library",
+        "//math:go_default_library",
         "//monitoring/clientstats:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//network:go_default_library",
@@ -89,7 +89,6 @@ go_test(
         "init_test.go",
         "log_processing_test.go",
         "prometheus_test.go",
-        "provider_test.go",
         "service_test.go",
     ],
     data = glob(["testdata/**"]),
@@ -121,7 +120,6 @@ go_test(
         "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//monitoring/clientstats:go_default_library",
-        "//network/authorization:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//runtime/version:go_default_library",

beacon-chain/execution/engine_client.go

@@ -23,6 +23,7 @@ import (
 	payloadattribute "github.com/prysmaticlabs/prysm/v4/consensus-types/payload-attribute"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/math"
 	pb "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
@@ -30,6 +31,20 @@ import (
 	"go.opencensus.io/trace"
 )
 
+var (
+	supportedEngineEndpoints = []string{
+		NewPayloadMethod,
+		NewPayloadMethodV2,
+		ForkchoiceUpdatedMethod,
+		ForkchoiceUpdatedMethodV2,
+		GetPayloadMethod,
+		GetPayloadMethodV2,
+		ExchangeTransitionConfigurationMethod,
+		GetPayloadBodiesByHashV1,
+		GetPayloadBodiesByRangeV1,
+	}
+)
+
 const (
 	// NewPayloadMethod v1 request string for JSON-RPC.
 	NewPayloadMethod = "engine_newPayloadV1"
@@ -53,6 +68,8 @@ const (
 	GetPayloadBodiesByHashV1 = "engine_getPayloadBodiesByHashV1"
 	// GetPayloadBodiesByRangeV1 v1 request string for JSON-RPC.
 	GetPayloadBodiesByRangeV1 = "engine_getPayloadBodiesByRangeV1"
+	// ExchangeCapabilities request string for JSON-RPC.
+	ExchangeCapabilities = "engine_exchangeCapabilities"
 	// Defines the seconds before timing out engine endpoints with non-block execution semantics.
 	defaultEngineTimeout = time.Second
 )
@@ -222,7 +239,8 @@ func (s *Service) GetPayload(ctx context.Context, payloadId [8]byte, slot primit
 			return nil, handleRPCError(err)
 		}
 
-		return blocks.WrappedExecutionPayloadCapella(result.Payload, big.NewInt(0).SetBytes(bytesutil.ReverseByteOrder(result.Value)))
+		v := big.NewInt(0).SetBytes(bytesutil.ReverseByteOrder(result.Value))
+		return blocks.WrappedExecutionPayloadCapella(result.Payload, math.WeiToGwei(v))
 	}
 
 	result := &pb.ExecutionPayload{}
@@ -278,6 +296,35 @@ func (s *Service) ExchangeTransitionConfiguration(
 	return nil
 }
 
+func (s *Service) ExchangeCapabilities(ctx context.Context) ([]string, error) {
+	if !features.Get().EnableOptionalEngineMethods {
+		return nil, errors.New("optional engine methods not enabled")
+	}
+	ctx, span := trace.StartSpan(ctx, "powchain.engine-api-client.ExchangeCapabilities")
+	defer span.End()
+
+	result := &pb.ExchangeCapabilities{}
+	err := s.rpcClient.CallContext(ctx, &result, ExchangeCapabilities, supportedEngineEndpoints)
+
+	var unsupported []string
+	for _, s1 := range supportedEngineEndpoints {
+		supported := false
+		for _, s2 := range result.SupportedMethods {
+			if s1 == s2 {
+				supported = true
+				break
+			}
+		}
+		if !supported {
+			unsupported = append(unsupported, s1)
+		}
+	}
+	if len(unsupported) != 0 {
+		log.Warnf("Please update client, detected the following unsupported engine methods: %s", unsupported)
+	}
+	return result.SupportedMethods, handleRPCError(err)
+}
+
 // GetTerminalBlockHash returns the valid terminal block hash based on total difficulty.
 //
 // Spec code:
@@ -671,7 +718,7 @@ func fullPayloadFromExecutionBlock(
 		BlockHash:     blockHash[:],
 		Transactions:  txs,
 		Withdrawals:   block.Withdrawals,
-	}, big.NewInt(0)) // We can't get the block value and don't care about the block value for this instance
+	}, 0) // We can't get the block value and don't care about the block value for this instance
 }
 
 // Handles errors received from the RPC server according to the specification.

beacon-chain/execution/engine_client_test.go

@@ -32,6 +32,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
 	"github.com/prysmaticlabs/prysm/v4/testing/util"
+	logTest "github.com/sirupsen/logrus/hooks/test"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -126,7 +127,7 @@ func TestClient_IPC(t *testing.T) {
 		require.Equal(t, true, ok)
 		req, ok := fix["ExecutionPayloadCapella"].(*pb.ExecutionPayloadCapella)
 		require.Equal(t, true, ok)
-		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(req, big.NewInt(0))
+		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(req, 0)
 		require.NoError(t, err)
 		latestValidHash, err := srv.NewPayload(ctx, wrappedPayload)
 		require.NoError(t, err)
@@ -257,10 +258,9 @@ func TestClient_HTTP(t *testing.T) {
 		require.DeepEqual(t, want.ExecutionPayload.PrevRandao.Bytes(), pb.PrevRandao)
 		require.DeepEqual(t, want.ExecutionPayload.ParentHash.Bytes(), pb.ParentHash)
 
-		v, err := resp.Value()
+		v, err := resp.ValueInGwei()
 		require.NoError(t, err)
-		wantedValue := []byte{17, 255} // 0x11ff
-		require.DeepEqual(t, wantedValue, v.Bytes())
+		require.Equal(t, uint64(1236), v)
 	})
 	t.Run(ForkchoiceUpdatedMethod+" VALID status", func(t *testing.T) {
 		forkChoiceState := &pb.ForkchoiceState{
@@ -424,7 +424,7 @@ func TestClient_HTTP(t *testing.T) {
 		client := newPayloadV2Setup(t, want, execPayload)
 
 		// We call the RPC method via HTTP and expect a proper result.
-		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, big.NewInt(0))
+		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
 		resp, err := client.NewPayload(ctx, wrappedPayload)
 		require.NoError(t, err)
@@ -452,7 +452,7 @@ func TestClient_HTTP(t *testing.T) {
 		client := newPayloadV2Setup(t, want, execPayload)
 
 		// We call the RPC method via HTTP and expect a proper result.
-		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, big.NewInt(0))
+		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
 		resp, err := client.NewPayload(ctx, wrappedPayload)
 		require.ErrorIs(t, ErrAcceptedSyncingPayloadStatus, err)
@@ -480,7 +480,7 @@ func TestClient_HTTP(t *testing.T) {
 		client := newPayloadV2Setup(t, want, execPayload)
 
 		// We call the RPC method via HTTP and expect a proper result.
-		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, big.NewInt(0))
+		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
 		resp, err := client.NewPayload(ctx, wrappedPayload)
 		require.ErrorIs(t, ErrInvalidBlockHashPayloadStatus, err)
@@ -508,7 +508,7 @@ func TestClient_HTTP(t *testing.T) {
 		client := newPayloadV2Setup(t, want, execPayload)
 
 		// We call the RPC method via HTTP and expect a proper result.
-		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, big.NewInt(0))
+		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
 		resp, err := client.NewPayload(ctx, wrappedPayload)
 		require.ErrorIs(t, ErrInvalidPayloadStatus, err)
@@ -1324,7 +1324,7 @@ func fixtures() map[string]interface{} {
 			GasUsed:       &hexUint,
 			Timestamp:     &hexUint,
 		},
-		BlockValue: "0x11ff",
+		BlockValue: "0x11fffffffff",
 	}
 	parent := bytesutil.PadTo([]byte("parentHash"), fieldparams.RootLength)
 	sha3Uncles := bytesutil.PadTo([]byte("sha3Uncles"), fieldparams.RootLength)
@@ -2320,3 +2320,77 @@ func TestCapella_PayloadBodiesByRange(t *testing.T) {
 		}
 	})
 }
+
+func Test_ExchangeCapabilities(t *testing.T) {
+	resetFn := features.InitWithReset(&features.Flags{
+		EnableOptionalEngineMethods: true,
+	})
+	defer resetFn()
+	t.Run("empty response works", func(t *testing.T) {
+		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/json")
+			defer func() {
+				require.NoError(t, r.Body.Close())
+			}()
+			exchangeCapabilities := &pb.ExchangeCapabilities{}
+			resp := map[string]interface{}{
+				"jsonrpc": "2.0",
+				"id":      1,
+				"result":  exchangeCapabilities,
+			}
+			err := json.NewEncoder(w).Encode(resp)
+			require.NoError(t, err)
+		}))
+		ctx := context.Background()
+		logHook := logTest.NewGlobal()
+
+		rpcClient, err := rpc.DialHTTP(srv.URL)
+		require.NoError(t, err)
+
+		service := &Service{}
+		service.rpcClient = rpcClient
+
+		results, err := service.ExchangeCapabilities(ctx)
+		require.NoError(t, err)
+		require.Equal(t, 0, len(results))
+
+		for _, item := range results {
+			require.NotNil(t, item)
+		}
+		assert.LogsContain(t, logHook, "Please update client, detected the following unsupported engine methods:")
+	})
+	t.Run("list of items", func(t *testing.T) {
+		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/json")
+			defer func() {
+				require.NoError(t, r.Body.Close())
+			}()
+			exchangeCapabilities := &pb.ExchangeCapabilities{
+				SupportedMethods: []string{"A", "B", "C"},
+			}
+
+			resp := map[string]interface{}{
+				"jsonrpc": "2.0",
+				"id":      1,
+				"result":  exchangeCapabilities,
+			}
+			err := json.NewEncoder(w).Encode(resp)
+			require.NoError(t, err)
+		}))
+		ctx := context.Background()
+
+		rpcClient, err := rpc.DialHTTP(srv.URL)
+		require.NoError(t, err)
+
+		service := &Service{}
+		service.rpcClient = rpcClient
+
+		results, err := service.ExchangeCapabilities(ctx)
+		require.NoError(t, err)
+		require.Equal(t, 3, len(results))
+
+		for _, item := range results {
+			require.NotNil(t, item)
+		}
+	})
+}

beacon-chain/execution/log_processing_test.go

@@ -405,8 +405,8 @@ func TestProcessETH2GenesisLog_CorrectNumOfDeposits(t *testing.T) {
 	web3Service.rpcClient = &mockExecution.RPCClient{Backend: testAcc.Backend}
 	web3Service.httpLogger = testAcc.Backend
 	web3Service.latestEth1Data.LastRequestedBlock = 0
-	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().NumberU64()
-	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time()
+	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().Number.Uint64()
+	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time
 	bConfig := params.MinimalSpecConfig().Copy()
 	bConfig.MinGenesisTime = 0
 	bConfig.SecondsPerETH1Block = 10
@@ -444,8 +444,8 @@ func TestProcessETH2GenesisLog_CorrectNumOfDeposits(t *testing.T) {
 	for i := uint64(0); i < params.BeaconConfig().Eth1FollowDistance; i++ {
 		testAcc.Backend.Commit()
 	}
-	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().NumberU64()
-	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time()
+	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().Number.Uint64()
+	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time
 
 	// Set up our subscriber now to listen for the chain started event.
 	stateChannel := make(chan *feed.Event, 1)
@@ -502,8 +502,8 @@ func TestProcessETH2GenesisLog_LargePeriodOfNoLogs(t *testing.T) {
 	web3Service.rpcClient = &mockExecution.RPCClient{Backend: testAcc.Backend}
 	web3Service.httpLogger = testAcc.Backend
 	web3Service.latestEth1Data.LastRequestedBlock = 0
-	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().NumberU64()
-	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time()
+	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().Number.Uint64()
+	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time
 	bConfig := params.MinimalSpecConfig().Copy()
 	bConfig.SecondsPerETH1Block = 10
 	params.OverrideBeaconConfig(bConfig)
@@ -540,14 +540,14 @@ func TestProcessETH2GenesisLog_LargePeriodOfNoLogs(t *testing.T) {
 	for i := uint64(0); i < 1500; i++ {
 		testAcc.Backend.Commit()
 	}
-	wantedGenesisTime := testAcc.Backend.Blockchain().CurrentBlock().Time()
+	wantedGenesisTime := testAcc.Backend.Blockchain().CurrentBlock().Time
 
 	// Forward the chain to account for the follow distance
 	for i := uint64(0); i < params.BeaconConfig().Eth1FollowDistance; i++ {
 		testAcc.Backend.Commit()
 	}
-	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().NumberU64()
-	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time()
+	web3Service.latestEth1Data.BlockHeight = testAcc.Backend.Blockchain().CurrentBlock().Number.Uint64()
+	web3Service.latestEth1Data.BlockTime = testAcc.Backend.Blockchain().CurrentBlock().Time
 
 	// Set the genesis time 500 blocks ahead of the last
 	// deposit log.

beacon-chain/execution/options.go

@@ -7,6 +7,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state/stategen"
+	"github.com/prysmaticlabs/prysm/v4/network"
 	"github.com/prysmaticlabs/prysm/v4/network/authorization"
 )
 
@@ -15,7 +16,7 @@ type Option func(s *Service) error
 // WithHttpEndpoint parse http endpoint for the powchain service to use.
 func WithHttpEndpoint(endpointString string) Option {
 	return func(s *Service) error {
-		s.cfg.currHttpEndpoint = HttpEndpoint(endpointString)
+		s.cfg.currHttpEndpoint = network.HttpEndpoint(endpointString)
 		return nil
 	}
 }
@@ -27,7 +28,7 @@ func WithHttpEndpointAndJWTSecret(endpointString string, secret []byte) Option {
 			return nil
 		}
 		// Overwrite authorization type for all endpoints to be of a bearer type.
-		hEndpoint := HttpEndpoint(endpointString)
+		hEndpoint := network.HttpEndpoint(endpointString)
 		hEndpoint.Auth.Method = authorization.Bearer
 		hEndpoint.Auth.Value = string(secret)
 

beacon-chain/execution/prometheus_test.go

@@ -15,7 +15,7 @@ import (
 func TestCleanup(t *testing.T) {
 	ctx := context.Background()
 	pc, err := NewPowchainCollector(ctx)
-	assert.NoError(t, err, "Uxpected error caling NewPowchainCollector")
+	assert.NoError(t, err, "Unexpected error calling NewPowchainCollector")
 	unregistered := pc.unregister()
 	assert.Equal(t, true, unregistered, "PowchainCollector.unregister did not return true (via prometheus.DefaultRegistry)")
 	// PowchainCollector is a prometheus.Collector, so we should be able to register it again
@@ -39,7 +39,7 @@ func TestCleanup(t *testing.T) {
 func TestCancelation(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	pc, err := NewPowchainCollector(ctx)
-	assert.NoError(t, err, "Uxpected error caling NewPowchainCollector")
+	assert.NoError(t, err, "Unexpected error calling NewPowchainCollector")
 	ticker := time.NewTicker(10 * time.Second)
 	cancel()
 	select {

beacon-chain/execution/provider.go

@@ -1,49 +0,0 @@
-package execution
-
-import (
-	"encoding/base64"
-	"strings"
-
-	"github.com/prysmaticlabs/prysm/v4/network"
-	"github.com/prysmaticlabs/prysm/v4/network/authorization"
-)
-
-// HttpEndpoint extracts an httputils.Endpoint from the provider parameter.
-func HttpEndpoint(eth1Provider string) network.Endpoint {
-	endpoint := network.Endpoint{
-		Url: "",
-		Auth: network.AuthorizationData{
-			Method: authorization.None,
-			Value:  "",
-		}}
-
-	authValues := strings.Split(eth1Provider, ",")
-	endpoint.Url = strings.TrimSpace(authValues[0])
-	if len(authValues) > 2 {
-		log.Errorf(
-			"ETH1 endpoint string can contain one comma for specifying the authorization header to access the provider."+
-				" String contains too many commas: %d. Skipping authorization.", len(authValues)-1)
-	} else if len(authValues) == 2 {
-		switch network.Method(strings.TrimSpace(authValues[1])) {
-		case authorization.Basic:
-			basicAuthValues := strings.Split(strings.TrimSpace(authValues[1]), " ")
-			if len(basicAuthValues) != 2 {
-				log.Errorf("Basic Authentication has incorrect format. Skipping authorization.")
-			} else {
-				endpoint.Auth.Method = authorization.Basic
-				endpoint.Auth.Value = base64.StdEncoding.EncodeToString([]byte(basicAuthValues[1]))
-			}
-		case authorization.Bearer:
-			bearerAuthValues := strings.Split(strings.TrimSpace(authValues[1]), " ")
-			if len(bearerAuthValues) != 2 {
-				log.Errorf("Bearer Authentication has incorrect format. Skipping authorization.")
-			} else {
-				endpoint.Auth.Method = authorization.Bearer
-				endpoint.Auth.Value = bearerAuthValues[1]
-			}
-		case authorization.None:
-			log.Errorf("Authorization has incorrect format or authorization type is not supported.")
-		}
-	}
-	return endpoint
-}

beacon-chain/execution/provider_test.go

@@ -1,74 +0,0 @@
-package execution
-
-import (
-	"testing"
-
-	"github.com/prysmaticlabs/prysm/v4/network/authorization"
-	"github.com/prysmaticlabs/prysm/v4/testing/assert"
-	logTest "github.com/sirupsen/logrus/hooks/test"
-)
-
-func TestHttpEndpoint(t *testing.T) {
-	hook := logTest.NewGlobal()
-	url := "http://test"
-
-	t.Run("URL", func(t *testing.T) {
-		endpoint := HttpEndpoint(url)
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-	})
-	t.Run("URL with separator", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-	})
-	t.Run("URL with whitespace", func(t *testing.T) {
-		endpoint := HttpEndpoint("   " + url + "   ,")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-	})
-	t.Run("Basic auth", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",Basic username:password")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.Basic, endpoint.Auth.Method)
-		assert.Equal(t, "dXNlcm5hbWU6cGFzc3dvcmQ=", endpoint.Auth.Value)
-	})
-	t.Run("Basic auth with whitespace", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",   Basic username:password   ")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.Basic, endpoint.Auth.Method)
-		assert.Equal(t, "dXNlcm5hbWU6cGFzc3dvcmQ=", endpoint.Auth.Value)
-	})
-	t.Run("Basic auth with incorrect format", func(t *testing.T) {
-		hook.Reset()
-		endpoint := HttpEndpoint(url + ",Basic username:password foo")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-		assert.LogsContain(t, hook, "Skipping authorization")
-	})
-	t.Run("Bearer auth", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",Bearer token")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.Bearer, endpoint.Auth.Method)
-		assert.Equal(t, "token", endpoint.Auth.Value)
-	})
-	t.Run("Bearer auth with whitespace", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",   Bearer token   ")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.Bearer, endpoint.Auth.Method)
-		assert.Equal(t, "token", endpoint.Auth.Value)
-	})
-	t.Run("Bearer auth with incorrect format", func(t *testing.T) {
-		hook.Reset()
-		endpoint := HttpEndpoint(url + ",Bearer token foo")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-		assert.LogsContain(t, hook, "Skipping authorization")
-	})
-	t.Run("Too many separators", func(t *testing.T) {
-		endpoint := HttpEndpoint(url + ",Bearer token,foo")
-		assert.Equal(t, url, endpoint.Url)
-		assert.Equal(t, authorization.None, endpoint.Auth.Method)
-		assert.LogsContain(t, hook, "Skipping authorization")
-	})
-}

beacon-chain/execution/rpc_connection.go

@@ -3,7 +3,6 @@ package execution
 import (
 	"context"
 	"fmt"
-	"net/url"
 	"strings"
 	"time"
 
@@ -107,26 +106,10 @@ func (s *Service) retryExecutionClientConnection(ctx context.Context, err error)
 
 // Initializes an RPC connection with authentication headers.
 func (s *Service) newRPCClientWithAuth(ctx context.Context, endpoint network.Endpoint) (*gethRPC.Client, error) {
-	// Need to handle ipc and http
-	var client *gethRPC.Client
-	u, err := url.Parse(endpoint.Url)
+	client, err := network.NewExecutionRPCClient(ctx, endpoint)
 	if err != nil {
 		return nil, err
 	}
-	switch u.Scheme {
-	case "http", "https":
-		client, err = gethRPC.DialOptions(ctx, endpoint.Url, gethRPC.WithHTTPClient(endpoint.HttpClient()))
-		if err != nil {
-			return nil, err
-		}
-	case "", "ipc":
-		client, err = gethRPC.DialIPC(ctx, endpoint.Url)
-		if err != nil {
-			return nil, err
-		}
-	default:
-		return nil, fmt.Errorf("no known transport for URL scheme %q", u.Scheme)
-	}
 	if endpoint.Auth.Method != authorization.None {
 		header, err := endpoint.Auth.ToHeaderValue()
 		if err != nil {