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Ability to add deposit receipts in the stub (#8139)
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73 changes: 73 additions & 0 deletions
73
...um/spec/src/main/java/tech/pegasys/teku/spec/datastructures/util/DepositReceiptsUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| /* | ||
| * Copyright Consensys Software Inc., 2024 | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on | ||
| * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations under the License. | ||
| */ | ||
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|
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| package tech.pegasys.teku.spec.datastructures.util; | ||
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| import java.security.SecureRandom; | ||
| import java.util.List; | ||
| import java.util.stream.IntStream; | ||
| import org.apache.tuweni.bytes.Bytes32; | ||
| import tech.pegasys.teku.bls.BLS; | ||
| import tech.pegasys.teku.bls.BLSKeyPair; | ||
| import tech.pegasys.teku.bls.BLSPublicKey; | ||
| import tech.pegasys.teku.bls.BLSSignature; | ||
| import tech.pegasys.teku.infrastructure.unsigned.UInt64; | ||
| import tech.pegasys.teku.spec.Spec; | ||
| import tech.pegasys.teku.spec.constants.Domain; | ||
| import tech.pegasys.teku.spec.datastructures.execution.versions.electra.DepositReceipt; | ||
| import tech.pegasys.teku.spec.datastructures.operations.DepositMessage; | ||
| import tech.pegasys.teku.spec.datastructures.state.beaconstate.BeaconState; | ||
| import tech.pegasys.teku.spec.logic.common.helpers.MiscHelpers; | ||
| import tech.pegasys.teku.spec.schemas.SchemaDefinitionsElectra; | ||
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| public class DepositReceiptsUtil { | ||
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| private static final int MAX_NUMBER_OF_DEPOSITS_PER_BLOCK = 3; | ||
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| private final Spec spec; | ||
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| @SuppressWarnings("DoNotCreateSecureRandomDirectly") | ||
| private final SecureRandom random = new SecureRandom(); | ||
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| public DepositReceiptsUtil(final Spec spec) { | ||
| this.spec = spec; | ||
| } | ||
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| public List<DepositReceipt> generateDepositReceipts(final BeaconState state) { | ||
| final UInt64 nextDepositReceiptIndex = UInt64.valueOf(state.getValidators().size()); | ||
| return IntStream.range(0, getNumberOfDepositReceiptsToGenerate()) | ||
| .mapToObj(i -> createDepositReceipt(state.getSlot(), nextDepositReceiptIndex.plus(i))) | ||
| .toList(); | ||
| } | ||
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| private int getNumberOfDepositReceiptsToGenerate() { | ||
| return random.nextInt(MAX_NUMBER_OF_DEPOSITS_PER_BLOCK + 1); | ||
| } | ||
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| private DepositReceipt createDepositReceipt(final UInt64 slot, final UInt64 index) { | ||
| final BLSKeyPair validatorKeyPair = BLSKeyPair.random(random); | ||
| final BLSPublicKey publicKey = validatorKeyPair.getPublicKey(); | ||
| final UInt64 depositAmount = UInt64.THIRTY_TWO_ETH; | ||
| final DepositMessage depositMessage = | ||
| new DepositMessage(publicKey, Bytes32.ZERO, depositAmount); | ||
| final MiscHelpers miscHelpers = spec.atSlot(slot).miscHelpers(); | ||
| final Bytes32 depositDomain = miscHelpers.computeDomain(Domain.DEPOSIT); | ||
| final BLSSignature signature = | ||
| BLS.sign( | ||
| validatorKeyPair.getSecretKey(), | ||
| miscHelpers.computeSigningRoot(depositMessage, depositDomain)); | ||
| return SchemaDefinitionsElectra.required(spec.atSlot(slot).getSchemaDefinitions()) | ||
| .getDepositReceiptSchema() | ||
| .create(publicKey, Bytes32.ZERO, depositAmount, signature, index); | ||
| } | ||
| } |
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