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feat: add EL triggered consolidation and remove
ExecutionLayer pref…
…ix (#6865) * init commit * Add consolidation request * fix lint * Remove ExecutionLayer prefix * Address comment * Fix verification logic * lint * Add todo
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111 changes: 0 additions & 111 deletions
111
packages/state-transition/src/block/processConsolidation.ts
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74 changes: 74 additions & 0 deletions
74
packages/state-transition/src/block/processConsolidationRequest.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| import {electra, ssz} from "@lodestar/types"; | ||
| import {FAR_FUTURE_EPOCH, MIN_ACTIVATION_BALANCE, PENDING_CONSOLIDATIONS_LIMIT} from "@lodestar/params"; | ||
|
|
||
| import {CachedBeaconStateElectra} from "../types.js"; | ||
| import {getConsolidationChurnLimit, isActiveValidator} from "../util/validator.js"; | ||
| import {hasExecutionWithdrawalCredential} from "../util/electra.js"; | ||
| import {computeConsolidationEpochAndUpdateChurn} from "../util/epoch.js"; | ||
|
|
||
| export function processConsolidationRequest( | ||
| state: CachedBeaconStateElectra, | ||
| consolidationRequest: electra.ConsolidationRequest | ||
| ): void { | ||
|
|
||
| // If the pending consolidations queue is full, consolidation requests are ignored | ||
| if (state.pendingConsolidations.length >= PENDING_CONSOLIDATIONS_LIMIT) { | ||
| return; | ||
| } | ||
|
|
||
| // If there is too little available consolidation churn limit, consolidation requests are ignored | ||
| if (getConsolidationChurnLimit(state) <= MIN_ACTIVATION_BALANCE) { | ||
| return; | ||
| } | ||
|
|
||
| const {sourcePubkey, targetPubkey} = consolidationRequest; | ||
| const sourceIndex = state.epochCtx.getValidatorIndex(sourcePubkey); | ||
| const targetIndex = state.epochCtx.getValidatorIndex(targetPubkey); | ||
|
|
||
| if (sourceIndex === undefined || targetIndex === undefined) { | ||
| return; | ||
| } | ||
|
|
||
| // Verify that source != target, so a consolidation cannot be used as an exit. | ||
| if (sourceIndex === targetIndex){ | ||
| return; | ||
| } | ||
|
|
||
| const sourceValidator = state.validators.getReadonly(sourceIndex); | ||
| const targetValidator = state.validators.getReadonly(targetIndex); | ||
| const sourceWithdrawalAddress = sourceValidator.withdrawalCredentials.subarray(12); | ||
| const currentEpoch = state.epochCtx.epoch; | ||
|
|
||
| // Verify withdrawal credentials | ||
| if ( | ||
| !hasExecutionWithdrawalCredential(sourceValidator.withdrawalCredentials) || | ||
| !hasExecutionWithdrawalCredential(targetValidator.withdrawalCredentials) | ||
| ) { | ||
| return; | ||
| } | ||
|
|
||
| if (Buffer.compare(sourceWithdrawalAddress, consolidationRequest.sourceAddress) !== 0) { | ||
| return; | ||
| } | ||
|
|
||
| // Verify the source and the target are active | ||
| if (!isActiveValidator(sourceValidator, currentEpoch) || !isActiveValidator(targetValidator, currentEpoch)) { | ||
| return; | ||
| } | ||
|
|
||
| // Verify exits for source and target have not been initiated | ||
| if (sourceValidator.exitEpoch !== FAR_FUTURE_EPOCH || targetValidator.exitEpoch !== FAR_FUTURE_EPOCH) { | ||
| return; | ||
| } | ||
|
|
||
| // TODO Electra: See if we can get rid of big int | ||
| const exitEpoch = computeConsolidationEpochAndUpdateChurn(state, BigInt(sourceValidator.effectiveBalance)); | ||
| sourceValidator.exitEpoch = exitEpoch; | ||
| sourceValidator.withdrawableEpoch = exitEpoch + state.config.MIN_VALIDATOR_WITHDRAWABILITY_DELAY; | ||
|
|
||
| const pendingConsolidation = ssz.electra.PendingConsolidation.toViewDU({ | ||
| sourceIndex, | ||
| targetIndex, | ||
| }); | ||
| state.pendingConsolidations.push(pendingConsolidation); | ||
| } |
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