feat: upgrade 7002 exits to withdrawal request (#6736)

* feat: upgrade 7002 exits to withdrawal request

* fix types

* fix types and references

* further fix the types references and get build passing

* update the process ops fn but needs to be extended by maxeb

packages/beacon-node/src/execution/engine/payloadIdCache.ts

@@ -26,9 +26,10 @@ export type DepositReceiptV1 = {
   index: QUANTITY;
 };
 
-export type ExecutionLayerExitV1 = {
+export type ExecutionLayerWithdrawalRequestV1 = {
   sourceAddress: DATA;
   validatorPubkey: DATA;
+  amount: QUANTITY;
 };
 
 type FcuAttributes = {headBlockHash: DATA; finalizedBlockHash: DATA} & Omit<PayloadAttributesRpc, "withdrawals">;

packages/beacon-node/src/execution/engine/types.ts

@@ -17,7 +17,7 @@ import {
   quantityToBigint,
 } from "../../eth1/provider/utils.js";
 import {ExecutionPayloadStatus, BlobsBundle, PayloadAttributes, VersionedHashes} from "./interface.js";
-import {WithdrawalV1, DepositReceiptV1, ExecutionLayerExitV1} from "./payloadIdCache.js";
+import {WithdrawalV1, DepositReceiptV1, ExecutionLayerWithdrawalRequestV1} from "./payloadIdCache.js";
 
 /* eslint-disable @typescript-eslint/naming-convention */
 
@@ -119,14 +119,14 @@ export type ExecutionPayloadBodyRpc = {
   transactions: DATA[];
   withdrawals: WithdrawalV1[] | null | undefined;
   depositReceipts: DepositReceiptV1[] | null | undefined;
-  exits: ExecutionLayerExitV1[] | null | undefined;
+  withdrawalRequests: ExecutionLayerWithdrawalRequestV1[] | null | undefined;
 };
 
 export type ExecutionPayloadBody = {
   transactions: bellatrix.Transaction[];
   withdrawals: capella.Withdrawals | null;
   depositReceipts: electra.DepositReceipts | null;
-  exits: electra.ExecutionLayerExits | null;
+  withdrawalRequests: electra.ExecutionLayerWithdrawalRequests | null;
 };
 
 export type ExecutionPayloadRpc = {
@@ -149,7 +149,7 @@ export type ExecutionPayloadRpc = {
   excessBlobGas?: QUANTITY; // DENEB
   parentBeaconBlockRoot?: QUANTITY; // DENEB
   depositReceipts?: DepositReceiptRpc[]; // ELECTRA
-  exits?: ExecutionLayerExitRpc[]; // ELECTRA
+  withdrawalRequests?: ExecutionLayerWithdrawalRequestRpc[]; // ELECTRA
 };
 
 export type WithdrawalRpc = {
@@ -160,7 +160,7 @@ export type WithdrawalRpc = {
 };
 
 export type DepositReceiptRpc = DepositReceiptV1;
-export type ExecutionLayerExitRpc = ExecutionLayerExitV1;
+export type ExecutionLayerWithdrawalRequestRpc = ExecutionLayerWithdrawalRequestV1;
 
 export type VersionedHashesRpc = DATA[];
 
@@ -215,9 +215,9 @@ export function serializeExecutionPayload(fork: ForkName, data: ExecutionPayload
 
   // ELECTRA adds depositReceipts to the ExecutionPayload
   if (ForkSeq[fork] >= ForkSeq.electra) {
-    const {depositReceipts, exits} = data as electra.ExecutionPayload;
+    const {depositReceipts, withdrawalRequests} = data as electra.ExecutionPayload;
     payload.depositReceipts = depositReceipts.map(serializeDepositReceipt);
-    payload.exits = exits.map(serializeExecutionLayerExit);
+    payload.withdrawalRequests = withdrawalRequests.map(serializeExecutionLayerWithdrawalRequest);
   }
 
   return payload;
@@ -306,7 +306,7 @@ export function parseExecutionPayload(
   }
 
   if (ForkSeq[fork] >= ForkSeq.electra) {
-    const {depositReceipts, exits} = data;
+    const {depositReceipts, withdrawalRequests} = data;
     // Geth can also reply with null
     if (depositReceipts == null) {
       throw Error(
@@ -315,12 +315,14 @@ export function parseExecutionPayload(
     }
     (executionPayload as electra.ExecutionPayload).depositReceipts = depositReceipts.map(deserializeDepositReceipt);
 
-    if (exits == null) {
+    if (withdrawalRequests == null) {
       throw Error(
-        `exits missing for ${fork} >= electra executionPayload number=${executionPayload.blockNumber} hash=${data.blockHash}`
+        `withdrawalRequests missing for ${fork} >= electra executionPayload number=${executionPayload.blockNumber} hash=${data.blockHash}`
       );
     }
-    (executionPayload as electra.ExecutionPayload).exits = exits.map(deserializeExecutionLayerExit);
+    (executionPayload as electra.ExecutionPayload).withdrawalRequests = withdrawalRequests.map(
+      deserializeExecutionLayerWithdrawalRequest
+    );
   }
 
   return {executionPayload, executionPayloadValue, blobsBundle, shouldOverrideBuilder};
@@ -409,17 +411,23 @@ export function deserializeDepositReceipt(serialized: DepositReceiptRpc): electr
   } as electra.DepositReceipt;
 }
 
-export function serializeExecutionLayerExit(exit: electra.ExecutionLayerExit): ExecutionLayerExitRpc {
+export function serializeExecutionLayerWithdrawalRequest(
+  withdrawalRequest: electra.ExecutionLayerWithdrawalRequest
+): ExecutionLayerWithdrawalRequestRpc {
   return {
-    sourceAddress: bytesToData(exit.sourceAddress),
-    validatorPubkey: bytesToData(exit.validatorPubkey),
+    sourceAddress: bytesToData(withdrawalRequest.sourceAddress),
+    validatorPubkey: bytesToData(withdrawalRequest.validatorPubkey),
+    amount: numToQuantity(withdrawalRequest.amount),
   };
 }
 
-export function deserializeExecutionLayerExit(exit: ExecutionLayerExitRpc): electra.ExecutionLayerExit {
+export function deserializeExecutionLayerWithdrawalRequest(
+  withdrawalRequest: ExecutionLayerWithdrawalRequestRpc
+): electra.ExecutionLayerWithdrawalRequest {
   return {
-    sourceAddress: dataToBytes(exit.sourceAddress, 20),
-    validatorPubkey: dataToBytes(exit.validatorPubkey, 48),
+    sourceAddress: dataToBytes(withdrawalRequest.sourceAddress, 20),
+    validatorPubkey: dataToBytes(withdrawalRequest.validatorPubkey, 48),
+    amount: quantityToNum(withdrawalRequest.amount),
   };
 }
 
@@ -429,7 +437,9 @@ export function deserializeExecutionPayloadBody(data: ExecutionPayloadBodyRpc |
         transactions: data.transactions.map((tran) => dataToBytes(tran, null)),
         withdrawals: data.withdrawals ? data.withdrawals.map(deserializeWithdrawal) : null,
         depositReceipts: data.depositReceipts ? data.depositReceipts.map(deserializeDepositReceipt) : null,
-        exits: data.exits ? data.exits.map(deserializeExecutionLayerExit) : null,
+        withdrawalRequests: data.withdrawalRequests
+          ? data.withdrawalRequests.map(deserializeExecutionLayerWithdrawalRequest)
+          : null,
       }
     : null;
 }
@@ -440,7 +450,9 @@ export function serializeExecutionPayloadBody(data: ExecutionPayloadBody | null)
         transactions: data.transactions.map((tran) => bytesToData(tran)),
         withdrawals: data.withdrawals ? data.withdrawals.map(serializeWithdrawal) : null,
         depositReceipts: data.depositReceipts ? data.depositReceipts.map(serializeDepositReceipt) : null,
-        exits: data.exits ? data.exits.map(serializeExecutionLayerExit) : null,
+        withdrawalRequests: data.withdrawalRequests
+          ? data.withdrawalRequests.map(serializeExecutionLayerWithdrawalRequest)
+          : null,
       }
     : null;
 }

packages/light-client/src/spec/utils.ts

@@ -117,8 +117,8 @@ export function upgradeLightClientHeader(
     case ForkName.electra:
       (upgradedHeader as LightClientHeader<ForkName.electra>).execution.depositReceiptsRoot =
         ssz.electra.LightClientHeader.fields.execution.fields.depositReceiptsRoot.defaultValue();
-      (upgradedHeader as electra.LightClientHeader).execution.exitsRoot =
-        ssz.electra.LightClientHeader.fields.execution.fields.exitsRoot.defaultValue();
+      (upgradedHeader as electra.LightClientHeader).execution.withdrawalRequestsRoot =
+        ssz.electra.LightClientHeader.fields.execution.fields.withdrawalRequestsRoot.defaultValue();
 
       // Break if no further upgrades is required else fall through
       if (ForkSeq[targetFork] <= ForkSeq.electra) break;
@@ -158,7 +158,7 @@ export function isValidLightClientHeader(config: ChainForkConfig, header: LightC
   if (epoch < config.ELECTRA_FORK_EPOCH) {
     if (
       (header as LightClientHeader<ForkName.electra>).execution.depositReceiptsRoot !== undefined ||
-      (header as LightClientHeader<ForkName.electra>).execution.exitsRoot !== undefined
+      (header as LightClientHeader<ForkName.electra>).execution.withdrawalRequestsRoot !== undefined
     ) {
       return false;
     }

packages/params/src/index.ts

@@ -95,7 +95,7 @@ export const {
   KZG_COMMITMENT_INCLUSION_PROOF_DEPTH,
 
   MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD,
-  MAX_EXECUTION_LAYER_EXITS,
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD,
   MAX_ATTESTER_SLASHINGS_ELECTRA,
   MAX_ATTESTATIONS_ELECTRA,
 } = activePreset;

packages/params/src/presets/mainnet.ts

@@ -121,7 +121,7 @@ export const mainnetPreset: BeaconPreset = {
 
   // ELECTRA
   MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD: 8192,
-  MAX_EXECUTION_LAYER_EXITS: 16,
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: 16,
   MAX_ATTESTER_SLASHINGS_ELECTRA: 1,
   MAX_ATTESTATIONS_ELECTRA: 8,
 };

packages/params/src/presets/minimal.ts

@@ -122,7 +122,7 @@ export const minimalPreset: BeaconPreset = {
 
   // ELECTRA
   MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD: 4,
-  MAX_EXECUTION_LAYER_EXITS: 16,
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: 16,
   MAX_ATTESTER_SLASHINGS_ELECTRA: 1,
   MAX_ATTESTATIONS_ELECTRA: 8,
 };

packages/params/src/types.ts

@@ -85,7 +85,7 @@ export type BeaconPreset = {
 
   // ELECTRA
   MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD: number;
-  MAX_EXECUTION_LAYER_EXITS: number;
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: number;
   MAX_ATTESTER_SLASHINGS_ELECTRA: number;
   MAX_ATTESTATIONS_ELECTRA: number;
 };
@@ -176,7 +176,7 @@ export const beaconPresetTypes: BeaconPresetTypes = {
 
   // ELECTRA
   MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD: "number",
-  MAX_EXECUTION_LAYER_EXITS: "number",
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: "number",
   MAX_ATTESTER_SLASHINGS_ELECTRA: "number",
   MAX_ATTESTATIONS_ELECTRA: "number",
 };

packages/state-transition/src/block/processExecutionLayerExit.ts → packages/state-transition/src/block/processExecutionLayerWithdrawalRequest.ts

@@ -6,22 +6,33 @@ import {isActiveValidator} from "../util/index.js";
 import {CachedBeaconStateElectra} from "../types.js";
 import {initiateValidatorExit} from "./index.js";
 
+const FULL_EXIT_REQUEST_AMOUNT = 0;
 /**
  * Process execution layer exit messages and initiate exit incase they belong to a valid active validator
  * otherwise silent ignore.
  */
-export function processExecutionLayerExit(state: CachedBeaconStateElectra, exit: electra.ExecutionLayerExit): void {
-  const validator = isValidExecutionLayerExit(state, exit);
-  if (validator === null) {
-    return;
-  }
+export function processExecutionLayerWithdrawalRequest(
+  state: CachedBeaconStateElectra,
+  withdrawalRequest: electra.ExecutionLayerWithdrawalRequest
+): void {
+  const isFullExitRequest = withdrawalRequest.amount === FULL_EXIT_REQUEST_AMOUNT;
+
+  if (isFullExitRequest) {
+    const validator = isValidExecutionLayerExit(state, withdrawalRequest);
+    if (validator === null) {
+      return;
+    }
 
-  initiateValidatorExit(state, validator);
+    initiateValidatorExit(state, validator);
+  } else {
+    // partial withdral request add codeblock
+  }
 }
 
+// TODO electra : add pending withdrawal check before exit
 export function isValidExecutionLayerExit(
   state: CachedBeaconStateElectra,
-  exit: electra.ExecutionLayerExit
+  exit: electra.ExecutionLayerWithdrawalRequest
 ): CompositeViewDU<typeof ssz.phase0.Validator> | null {
   const {config, epochCtx} = state;
   const validatorIndex = epochCtx.getValidatorIndex(exit.validatorPubkey);

packages/state-transition/src/block/processOperations.ts

@@ -8,7 +8,7 @@ import {processProposerSlashing} from "./processProposerSlashing.js";
 import {processAttesterSlashing} from "./processAttesterSlashing.js";
 import {processDeposit} from "./processDeposit.js";
 import {processVoluntaryExit} from "./processVoluntaryExit.js";
-import {processExecutionLayerExit} from "./processExecutionLayerExit.js";
+import {processExecutionLayerWithdrawalRequest} from "./processExecutionLayerWithdrawalRequest.js";
 import {processBlsToExecutionChange} from "./processBlsToExecutionChange.js";
 import {processDepositReceipt} from "./processDepositReceipt.js";
 import {ProcessBlockOpts} from "./types.js";
@@ -19,7 +19,7 @@ export {
   processAttestations,
   processDeposit,
   processVoluntaryExit,
-  processExecutionLayerExit,
+  processExecutionLayerWithdrawalRequest,
   processBlsToExecutionChange,
   processDepositReceipt,
 };
@@ -55,8 +55,8 @@ export function processOperations(
     processVoluntaryExit(state, voluntaryExit, opts.verifySignatures);
   }
   if (fork >= ForkSeq.electra) {
-    for (const elExit of (body as electra.BeaconBlockBody).executionPayload.exits) {
-      processExecutionLayerExit(state as CachedBeaconStateElectra, elExit);
+    for (const elWithdrawalRequest of (body as electra.BeaconBlockBody).executionPayload.withdrawalRequests) {
+      processExecutionLayerWithdrawalRequest(state as CachedBeaconStateElectra, elWithdrawalRequest);
     }
   }
 

packages/state-transition/src/slot/upgradeStateToElectra.ts

@@ -20,7 +20,7 @@ export function upgradeStateToElectra(stateDeneb: CachedBeaconStateDeneb): Cache
     epoch: stateDeneb.epochCtx.epoch,
   });
 
-  // latestExecutionPayloadHeader's depositReceiptsRoot and exitsRoot set to zeros by default
+  // latestExecutionPayloadHeader's depositReceiptsRoot and withdrawalRequestsRoot set to zeros by default
   // default value of depositReceiptsStartIndex is UNSET_DEPOSIT_RECEIPTS_START_INDEX
   stateElectra.depositReceiptsStartIndex = UNSET_DEPOSIT_RECEIPTS_START_INDEX;
 

packages/state-transition/src/util/execution.ts

@@ -174,9 +174,10 @@ export function executionPayloadToPayloadHeader(fork: ForkSeq, payload: Executio
   if (fork >= ForkSeq.electra) {
     (bellatrixPayloadFields as electra.ExecutionPayloadHeader).depositReceiptsRoot =
       ssz.electra.DepositReceipts.hashTreeRoot((payload as electra.ExecutionPayload).depositReceipts);
-    (bellatrixPayloadFields as electra.ExecutionPayloadHeader).exitsRoot = ssz.electra.ExecutionLayerExits.hashTreeRoot(
-      (payload as electra.ExecutionPayload).exits
-    );
+    (bellatrixPayloadFields as electra.ExecutionPayloadHeader).withdrawalRequestsRoot =
+      ssz.electra.ExecutionLayerWithdrawalRequests.hashTreeRoot(
+        (payload as electra.ExecutionPayload).withdrawalRequests
+      );
   }
 
   return bellatrixPayloadFields;

packages/types/src/electra/sszTypes.ts

@@ -16,7 +16,7 @@ import {
   MAX_COMMITTEES_PER_SLOT,
   MAX_ATTESTATIONS_ELECTRA,
   MAX_ATTESTER_SLASHINGS_ELECTRA,
-  MAX_EXECUTION_LAYER_EXITS,
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD,
 } from "@lodestar/params";
 import {ssz as primitiveSsz} from "../primitive/index.js";
 import {ssz as phase0Ssz} from "../phase0/index.js";
@@ -117,20 +117,24 @@ export const DepositReceipt = new ContainerType(
 
 export const DepositReceipts = new ListCompositeType(DepositReceipt, MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD);
 
-export const ExecutionLayerExit = new ContainerType(
+export const ExecutionLayerWithdrawalRequest = new ContainerType(
   {
     sourceAddress: ExecutionAddress,
     validatorPubkey: BLSPubkey,
+    amount: UintNum64,
   },
-  {typeName: "ExecutionLayerExit", jsonCase: "eth2"}
+  {typeName: "ExecutionLayerWithdrawalRequest", jsonCase: "eth2"}
+);
+export const ExecutionLayerWithdrawalRequests = new ListCompositeType(
+  ExecutionLayerWithdrawalRequest,
+  MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD
 );
-export const ExecutionLayerExits = new ListCompositeType(ExecutionLayerExit, MAX_EXECUTION_LAYER_EXITS);
 
 export const ExecutionPayload = new ContainerType(
   {
     ...denebSsz.ExecutionPayload.fields,
     depositReceipts: DepositReceipts, // New in ELECTRA
-    exits: ExecutionLayerExits, // New in ELECTRA
+    withdrawalRequests: ExecutionLayerWithdrawalRequests, // New in ELECTRA
   },
   {typeName: "ExecutionPayload", jsonCase: "eth2"}
 );
@@ -139,7 +143,7 @@ export const ExecutionPayloadHeader = new ContainerType(
   {
     ...denebSsz.ExecutionPayloadHeader.fields,
     depositReceiptsRoot: Root, // New in ELECTRA
-    exitsRoot: Root, // New in ELECTRA
+    withdrawalRequestsRoot: Root, // New in ELECTRA
   },
   {typeName: "ExecutionPayloadHeader", jsonCase: "eth2"}
 );

packages/types/src/electra/types.ts

@@ -12,8 +12,8 @@ export type SignedAggregateAndProof = ValueOf<typeof ssz.SignedAggregateAndProof
 export type DepositReceipt = ValueOf<typeof ssz.DepositReceipt>;
 export type DepositReceipts = ValueOf<typeof ssz.DepositReceipts>;
 
-export type ExecutionLayerExit = ValueOf<typeof ssz.ExecutionLayerExit>;
-export type ExecutionLayerExits = ValueOf<typeof ssz.ExecutionLayerExits>;
+export type ExecutionLayerWithdrawalRequest = ValueOf<typeof ssz.ExecutionLayerWithdrawalRequest>;
+export type ExecutionLayerWithdrawalRequests = ValueOf<typeof ssz.ExecutionLayerWithdrawalRequests>;
 
 export type ExecutionPayload = ValueOf<typeof ssz.ExecutionPayload>;
 export type ExecutionPayloadHeader = ValueOf<typeof ssz.ExecutionPayloadHeader>;

packages/validator/src/util/params.ts

@@ -224,7 +224,7 @@ function getSpecCriticalParams(localConfig: ChainConfig): Record<keyof ConfigWit
 
     // ELECTRA
     MAX_DEPOSIT_RECEIPTS_PER_PAYLOAD: electraForkRelevant,
-    MAX_EXECUTION_LAYER_EXITS: electraForkRelevant,
+    MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: electraForkRelevant,
     MAX_ATTESTER_SLASHINGS_ELECTRA: electraForkRelevant,
     MAX_ATTESTATIONS_ELECTRA: electraForkRelevant,
   };