feat: implement EIP-7549 (#6689)

* initial commit

* lint

* Add getAttestingIndices and update getIndexedAttestation

* Update gossip validation

* Update attestation gossip validation

* aggregateAndProof validation

* clean up

* Validator

* Misc

* Fix the build erros

* feat: get attestations for electra block (#6732)

* feat: getAttestationsForBlock() for electra

* chore: fix lint

* fix: MAX_ATTESTATIONS_PER_GROUP_ELECTRA and address PR comments

* chore: unit test aggregateConsolidation

* Fix rebase mistake

* Address my own comment :)

---------

Co-authored-by: Navie Chan <naviechan@gmail.com>

* Fix check-types

* Address comments

---------

Co-authored-by: Nazar Hussain <nazarhussain@gmail.com>
Co-authored-by: tuyennhv <tuyen@chainsafe.io>
Co-authored-by: gajinder <develop@g11tech.io>

packages/api/src/beacon/routes/beacon/pool.ts

@@ -1,6 +1,7 @@
 /* eslint-disable @typescript-eslint/naming-convention */
 import {ValueOf} from "@chainsafe/ssz";
 import {ChainForkConfig} from "@lodestar/config";
+import {ForkSeq} from "@lodestar/params";
 import {phase0, capella, CommitteeIndex, Slot, ssz} from "@lodestar/types";
 import {Schema, Endpoint, RouteDefinitions} from "../../../utils/index.js";
 import {
@@ -12,18 +13,24 @@ import {
   EmptyRequest,
   EmptyResponseCodec,
   EmptyResponseData,
+  WithVersion,
 } from "../../../utils/codecs.js";
+import {MetaHeader, VersionCodec, VersionMeta} from "../../../utils/metadata.js";
+import {toForkName} from "../../../utils/fork.js";
 
 // See /packages/api/src/routes/index.ts for reasoning and instructions to add new routes
 
-const AttestationListType = ArrayOf(ssz.phase0.Attestation);
+const AttestationListTypePhase0 = ArrayOf(ssz.phase0.Attestation);
+const AttestationListTypeElectra = ArrayOf(ssz.electra.Attestation);
 const AttesterSlashingListType = ArrayOf(ssz.phase0.AttesterSlashing);
 const ProposerSlashingListType = ArrayOf(ssz.phase0.ProposerSlashing);
 const SignedVoluntaryExitListType = ArrayOf(ssz.phase0.SignedVoluntaryExit);
 const SignedBLSToExecutionChangeListType = ArrayOf(ssz.capella.SignedBLSToExecutionChange);
 const SyncCommitteeMessageListType = ArrayOf(ssz.altair.SyncCommitteeMessage);
 
-type AttestationList = ValueOf<typeof AttestationListType>;
+type AttestationListPhase0 = ValueOf<typeof AttestationListTypePhase0>;
+type AttestationListElectra = ValueOf<typeof AttestationListTypeElectra>;
+type AttestationList = AttestationListPhase0 | AttestationListElectra;
 type AttesterSlashingList = ValueOf<typeof AttesterSlashingListType>;
 type ProposerSlashingList = ValueOf<typeof ProposerSlashingListType>;
 type SignedVoluntaryExitList = ValueOf<typeof SignedVoluntaryExitListType>;
@@ -40,7 +47,7 @@ export type Endpoints = {
     {slot?: Slot; committeeIndex?: CommitteeIndex},
     {query: {slot?: number; committee_index?: number}},
     AttestationList,
-    EmptyMeta
+    VersionMeta
   >;
 
   /**
@@ -106,7 +113,7 @@ export type Endpoints = {
   submitPoolAttestations: Endpoint<
     "POST",
     {signedAttestations: AttestationList},
-    {body: unknown},
+    {body: unknown; headers: {[MetaHeader.Version]: string}},
     EmptyResponseData,
     EmptyMeta
   >;
@@ -172,7 +179,7 @@ export type Endpoints = {
   >;
 };
 
-export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpoints> {
+export function getDefinitions(config: ChainForkConfig): RouteDefinitions<Endpoints> {
   return {
     getPoolAttestations: {
       url: "/eth/v1/beacon/pool/attestations",
@@ -183,8 +190,10 @@ export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpo
         schema: {query: {slot: Schema.Uint, committee_index: Schema.Uint}},
       },
       resp: {
-        data: AttestationListType,
-        meta: EmptyMetaCodec,
+        data: WithVersion((fork) =>
+          ForkSeq[fork] >= ForkSeq.electra ? AttestationListTypeElectra : AttestationListTypePhase0
+        ),
+        meta: VersionCodec,
       },
     },
     getPoolAttesterSlashings: {
@@ -227,12 +236,47 @@ export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpo
       url: "/eth/v1/beacon/pool/attestations",
       method: "POST",
       req: {
-        writeReqJson: ({signedAttestations}) => ({body: AttestationListType.toJson(signedAttestations)}),
-        parseReqJson: ({body}) => ({signedAttestations: AttestationListType.fromJson(body)}),
-        writeReqSsz: ({signedAttestations}) => ({body: AttestationListType.serialize(signedAttestations)}),
-        parseReqSsz: ({body}) => ({signedAttestations: AttestationListType.deserialize(body)}),
+        writeReqJson: ({signedAttestations}) => {
+          const fork = config.getForkName(signedAttestations[0].data.slot);
+          return {
+            body:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? AttestationListTypeElectra.toJson(signedAttestations as AttestationListElectra)
+                : AttestationListTypePhase0.toJson(signedAttestations as AttestationListPhase0),
+            headers: {[MetaHeader.Version]: fork},
+          };
+        },
+        parseReqJson: ({body, headers}) => {
+          const fork = toForkName(headers[MetaHeader.Version]);
+          return {
+            signedAttestations:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? AttestationListTypeElectra.fromJson(body)
+                : AttestationListTypePhase0.fromJson(body),
+          };
+        },
+        writeReqSsz: ({signedAttestations}) => {
+          const fork = config.getForkName(signedAttestations[0].data.slot);
+          return {
+            body:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? AttestationListTypeElectra.serialize(signedAttestations as AttestationListElectra)
+                : AttestationListTypePhase0.serialize(signedAttestations as AttestationListPhase0),
+            headers: {[MetaHeader.Version]: fork},
+          };
+        },
+        parseReqSsz: ({body, headers}) => {
+          const fork = toForkName(headers[MetaHeader.Version]);
+          return {
+            signedAttestations:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? AttestationListTypeElectra.deserialize(body)
+                : AttestationListTypePhase0.deserialize(body),
+          };
+        },
         schema: {
           body: Schema.ObjectArray,
+          headers: {[MetaHeader.Version]: Schema.String},
         },
       },
       resp: EmptyResponseCodec,

packages/api/src/beacon/routes/events.ts

@@ -104,10 +104,10 @@ export type EventData = {
     block: RootHex;
     executionOptimistic: boolean;
   };
-  [EventType.attestation]: phase0.Attestation;
+  [EventType.attestation]: {version: ForkName; data: allForks.Attestation};
   [EventType.voluntaryExit]: phase0.SignedVoluntaryExit;
   [EventType.proposerSlashing]: phase0.ProposerSlashing;
-  [EventType.attesterSlashing]: phase0.AttesterSlashing;
+  [EventType.attesterSlashing]: {version: ForkName; data: allForks.AttesterSlashing};
   [EventType.blsToExecutionChange]: capella.SignedBLSToExecutionChange;
   [EventType.finalizedCheckpoint]: {
     block: RootHex;
@@ -225,10 +225,10 @@ export function getTypeByEvent(): {[K in EventType]: TypeJson<EventData[K]>} {
       {jsonCase: "eth2"}
     ),
 
-    [EventType.attestation]: ssz.phase0.Attestation,
+    [EventType.attestation]: WithVersion((fork) => (ssz.allForks[fork] as allForks.AllForksSSZTypes).Attestation),
     [EventType.voluntaryExit]: ssz.phase0.SignedVoluntaryExit,
     [EventType.proposerSlashing]: ssz.phase0.ProposerSlashing,
-    [EventType.attesterSlashing]: ssz.phase0.AttesterSlashing,
+    [EventType.attesterSlashing]: WithVersion((fork) => ssz.allForks[fork].AttesterSlashing),
     [EventType.blsToExecutionChange]: ssz.capella.SignedBLSToExecutionChange,
 
     [EventType.finalizedCheckpoint]: new ContainerType(

packages/api/src/beacon/routes/validator.ts

@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/naming-convention */
 import {ContainerType, fromHexString, toHexString, Type, ValueOf} from "@chainsafe/ssz";
 import {ChainForkConfig} from "@lodestar/config";
-import {isForkBlobs} from "@lodestar/params";
+import {isForkBlobs, ForkSeq} from "@lodestar/params";
 import {
   altair,
   BLSSignature,
@@ -208,7 +208,8 @@ export const ValidatorIndicesType = ArrayOf(ssz.ValidatorIndex);
 export const AttesterDutyListType = ArrayOf(AttesterDutyType);
 export const ProposerDutyListType = ArrayOf(ProposerDutyType);
 export const SyncDutyListType = ArrayOf(SyncDutyType);
-export const SignedAggregateAndProofListType = ArrayOf(ssz.phase0.SignedAggregateAndProof);
+export const SignedAggregateAndProofListPhase0Type = ArrayOf(ssz.phase0.SignedAggregateAndProof);
+export const SignedAggregateAndProofListElectaType = ArrayOf(ssz.electra.SignedAggregateAndProof);
 export const SignedContributionAndProofListType = ArrayOf(ssz.altair.SignedContributionAndProof);
 export const BeaconCommitteeSubscriptionListType = ArrayOf(BeaconCommitteeSubscriptionType);
 export const SyncCommitteeSubscriptionListType = ArrayOf(SyncCommitteeSubscriptionType);
@@ -225,7 +226,9 @@ export type ProposerDuty = ValueOf<typeof ProposerDutyType>;
 export type ProposerDutyList = ValueOf<typeof ProposerDutyListType>;
 export type SyncDuty = ValueOf<typeof SyncDutyType>;
 export type SyncDutyList = ValueOf<typeof SyncDutyListType>;
-export type SignedAggregateAndProofList = ValueOf<typeof SignedAggregateAndProofListType>;
+export type SignedAggregateAndProofListPhase0 = ValueOf<typeof SignedAggregateAndProofListPhase0Type>;
+export type SignedAggregateAndProofListElecta = ValueOf<typeof SignedAggregateAndProofListElectaType>;
+export type SignedAggregateAndProofList = SignedAggregateAndProofListPhase0 | SignedAggregateAndProofListElecta;
 export type SignedContributionAndProofList = ValueOf<typeof SignedContributionAndProofListType>;
 export type BeaconCommitteeSubscription = ValueOf<typeof BeaconCommitteeSubscriptionType>;
 export type BeaconCommitteeSubscriptionList = ValueOf<typeof BeaconCommitteeSubscriptionListType>;
@@ -406,10 +409,11 @@ export type Endpoints = {
       /** HashTreeRoot of AttestationData that validator want's aggregated */
       attestationDataRoot: Root;
       slot: Slot;
+      index: number;
     },
-    {query: {attestation_data_root: string; slot: number}},
-    phase0.Attestation,
-    EmptyMeta
+    {query: {attestation_data_root: string; slot: number; index: number}},
+    allForks.Attestation,
+    VersionMeta
   >;
 
   /**
@@ -419,7 +423,7 @@ export type Endpoints = {
   publishAggregateAndProofs: Endpoint<
     "POST",
     {signedAggregateAndProofs: SignedAggregateAndProofList},
-    {body: unknown},
+    {body: unknown; headers: {[MetaHeader.Version]: string}},
     EmptyResponseData,
     EmptyMeta
   >;
@@ -536,7 +540,7 @@ export type Endpoints = {
   >;
 };
 
-export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpoints> {
+export function getDefinitions(config: ChainForkConfig): RouteDefinitions<Endpoints> {
   return {
     getAttesterDuties: {
       url: "/eth/v1/validator/duties/attester/{epoch}",
@@ -801,33 +805,78 @@ export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpo
       url: "/eth/v1/validator/aggregate_attestation",
       method: "GET",
       req: {
-        writeReq: ({attestationDataRoot, slot}) => ({
-          query: {attestation_data_root: toHexString(attestationDataRoot), slot},
+        writeReq: ({attestationDataRoot, slot, index}) => ({
+          query: {attestation_data_root: toHexString(attestationDataRoot), slot, index},
+        }),
+        parseReq: ({query}) => ({
+          attestationDataRoot: fromHexString(query.attestation_data_root),
+          slot: query.slot,
+          index: query.slot,
         }),
-        parseReq: ({query}) => ({attestationDataRoot: fromHexString(query.attestation_data_root), slot: query.slot}),
         schema: {
-          query: {attestation_data_root: Schema.StringRequired, slot: Schema.UintRequired},
+          query: {attestation_data_root: Schema.StringRequired, slot: Schema.UintRequired, index: Schema.UintRequired},
         },
       },
       resp: {
-        data: ssz.phase0.Attestation,
-        meta: EmptyMetaCodec,
+        data: WithVersion((fork) =>
+          ForkSeq[fork] >= ForkSeq.electra ? ssz.electra.Attestation : ssz.phase0.Attestation
+        ),
+        meta: VersionCodec,
       },
     },
     publishAggregateAndProofs: {
       url: "/eth/v1/validator/aggregate_and_proofs",
       method: "POST",
       req: {
-        writeReqJson: ({signedAggregateAndProofs}) => ({
-          body: SignedAggregateAndProofListType.toJson(signedAggregateAndProofs),
-        }),
-        parseReqJson: ({body}) => ({signedAggregateAndProofs: SignedAggregateAndProofListType.fromJson(body)}),
-        writeReqSsz: ({signedAggregateAndProofs}) => ({
-          body: SignedAggregateAndProofListType.serialize(signedAggregateAndProofs),
-        }),
-        parseReqSsz: ({body}) => ({signedAggregateAndProofs: SignedAggregateAndProofListType.deserialize(body)}),
+        writeReqJson: ({signedAggregateAndProofs}) => {
+          const fork = config.getForkName(signedAggregateAndProofs[0].message.aggregate.data.slot);
+          return {
+            body:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? SignedAggregateAndProofListElectaType.toJson(
+                    signedAggregateAndProofs as SignedAggregateAndProofListElecta
+                  )
+                : SignedAggregateAndProofListPhase0Type.toJson(
+                    signedAggregateAndProofs as SignedAggregateAndProofListPhase0
+                  ),
+            headers: {[MetaHeader.Version]: fork},
+          };
+        },
+        parseReqJson: ({body, headers}) => {
+          const fork = toForkName(headers[MetaHeader.Version]);
+          return {
+            signedAggregateAndProofs:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? SignedAggregateAndProofListElectaType.fromJson(body)
+                : SignedAggregateAndProofListPhase0Type.fromJson(body),
+          };
+        },
+        writeReqSsz: ({signedAggregateAndProofs}) => {
+          const fork = config.getForkName(signedAggregateAndProofs[0].message.aggregate.data.slot);
+          return {
+            body:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? SignedAggregateAndProofListElectaType.serialize(
+                    signedAggregateAndProofs as SignedAggregateAndProofListElecta
+                  )
+                : SignedAggregateAndProofListPhase0Type.serialize(
+                    signedAggregateAndProofs as SignedAggregateAndProofListPhase0
+                  ),
+            headers: {[MetaHeader.Version]: fork},
+          };
+        },
+        parseReqSsz: ({body, headers}) => {
+          const fork = toForkName(headers[MetaHeader.Version]);
+          return {
+            signedAggregateAndProofs:
+              ForkSeq[fork] >= ForkSeq.electra
+                ? SignedAggregateAndProofListElectaType.deserialize(body)
+                : SignedAggregateAndProofListPhase0Type.deserialize(body),
+          };
+        },
         schema: {
           body: Schema.ObjectArray,
+          headers: {[MetaHeader.Version]: Schema.String},
         },
       },
       resp: EmptyResponseCodec,

packages/beacon-node/src/api/impl/beacon/pool/index.ts

@@ -1,7 +1,7 @@
 import {routes} from "@lodestar/api";
 import {ApplicationMethods} from "@lodestar/api/server";
 import {Epoch, ssz} from "@lodestar/types";
-import {SYNC_COMMITTEE_SUBNET_SIZE} from "@lodestar/params";
+import {ForkName, SYNC_COMMITTEE_SUBNET_SIZE} from "@lodestar/params";
 import {validateApiAttestation} from "../../../../chain/validation/index.js";
 import {validateApiAttesterSlashing} from "../../../../chain/validation/attesterSlashing.js";
 import {validateApiProposerSlashing} from "../../../../chain/validation/proposerSlashing.js";
@@ -78,7 +78,7 @@ export function getBeaconPoolApi({
               metrics?.opPool.attestationPoolInsertOutcome.inc({insertOutcome});
             }
 
-            chain.emitter.emit(routes.events.EventType.attestation, attestation);
+            chain.emitter.emit(routes.events.EventType.attestation, {data: attestation, version: ForkName.phase0});
 
             const sentPeers = await network.publishBeaconAttestation(attestation, subnet);
             metrics?.onPoolSubmitUnaggregatedAttestation(seenTimestampSec, indexedAttestation, subnet, sentPeers);

packages/beacon-node/src/api/impl/validator/index.ts

@@ -814,6 +814,7 @@ export function getValidatorApi(
       const attEpoch = computeEpochAtSlot(slot);
       const headBlockRootHex = chain.forkChoice.getHead().blockRoot;
       const headBlockRoot = fromHex(headBlockRootHex);
+      const fork = config.getForkSeq(slot);
 
       const beaconBlockRoot =
         slot >= headSlot
@@ -845,7 +846,7 @@ export function getValidatorApi(
       return {
         data: {
           slot,
-          index: committeeIndex,
+          index: fork >= ForkSeq.electra ? 0 : committeeIndex,
           beaconBlockRoot,
           source: attEpochState.currentJustifiedCheckpoint,
           target: {epoch: attEpoch, root: targetRoot},
@@ -1082,6 +1083,7 @@ export function getValidatorApi(
 
       return {
         data: aggregate,
+        version: config.getForkName(slot),
       };
     },
 

packages/beacon-node/src/chain/blocks/importBlock.ts

@@ -428,12 +428,18 @@ export async function importBlock(
     }
     if (this.emitter.listenerCount(routes.events.EventType.attestation)) {
       for (const attestation of block.message.body.attestations) {
-        this.emitter.emit(routes.events.EventType.attestation, attestation);
+        this.emitter.emit(routes.events.EventType.attestation, {
+          version: this.config.getForkName(blockSlot),
+          data: attestation,
+        });
       }
     }
     if (this.emitter.listenerCount(routes.events.EventType.attesterSlashing)) {
       for (const attesterSlashing of block.message.body.attesterSlashings) {
-        this.emitter.emit(routes.events.EventType.attesterSlashing, attesterSlashing);
+        this.emitter.emit(routes.events.EventType.attesterSlashing, {
+          version: this.config.getForkName(blockSlot),
+          data: attesterSlashing,
+        });
       }
     }
     if (this.emitter.listenerCount(routes.events.EventType.proposerSlashing)) {

packages/beacon-node/src/chain/errors/attestationError.ts

@@ -127,6 +127,14 @@ export enum AttestationErrorCode {
   INVALID_SERIALIZED_BYTES = "ATTESTATION_ERROR_INVALID_SERIALIZED_BYTES",
   /** Too many skipped slots. */
   TOO_MANY_SKIPPED_SLOTS = "ATTESTATION_ERROR_TOO_MANY_SKIPPED_SLOTS",
+  /**
+   * Electra: The aggregated attestation doesn't have only one committee bit set.
+   */
+  NOT_EXACTLY_ONE_COMMITTEE_BIT_SET = "ATTESTATION_ERROR_NOT_EXACTLY_ONE_COMMITTEE_BIT_SET",
+  /**
+   * Electra: Invalid attestationData index: is non-zero
+   */
+  NON_ZERO_ATTESTATION_DATA_INDEX = "ATTESTATION_ERROR_NON_ZERO_ATTESTATION_DATA_INDEX",
 }
 
 export type AttestationErrorType =
@@ -160,7 +168,9 @@ export type AttestationErrorType =
   | {code: AttestationErrorCode.INVALID_AGGREGATOR}
   | {code: AttestationErrorCode.INVALID_INDEXED_ATTESTATION}
   | {code: AttestationErrorCode.INVALID_SERIALIZED_BYTES}
-  | {code: AttestationErrorCode.TOO_MANY_SKIPPED_SLOTS; headBlockSlot: Slot; attestationSlot: Slot};
+  | {code: AttestationErrorCode.TOO_MANY_SKIPPED_SLOTS; headBlockSlot: Slot; attestationSlot: Slot}
+  | {code: AttestationErrorCode.NOT_EXACTLY_ONE_COMMITTEE_BIT_SET}
+  | {code: AttestationErrorCode.NON_ZERO_ATTESTATION_DATA_INDEX};
 
 export class AttestationError extends GossipActionError<AttestationErrorType> {
   getMetadata(): Record<string, string | number | null> {