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Add Node Stake Consensus (hashgraph#4344)
* Add Node Stake Consensus Signed-off-by: Edwin Greene <[email protected]>
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29 changes: 29 additions & 0 deletions
29
...rror-importer/src/main/java/com/hedera/mirror/importer/downloader/ConsensusValidator.java
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| package com.hedera.mirror.importer.downloader; | ||
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| /*- | ||
| * | ||
| * Hedera Mirror Node | ||
| * | ||
| * Copyright (C) 2019 - 2022 Hedera Hashgraph, LLC | ||
| * | ||
| * 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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| import java.util.Collection; | ||
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| import com.hedera.mirror.importer.domain.FileStreamSignature; | ||
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| public interface ConsensusValidator { | ||
| void validate(Collection<FileStreamSignature> signatures); | ||
| } |
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...-importer/src/main/java/com/hedera/mirror/importer/downloader/ConsensusValidatorImpl.java
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| package com.hedera.mirror.importer.downloader; | ||
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| /*- | ||
| * | ||
| * Hedera Mirror Node | ||
| * | ||
| * Copyright (C) 2019 - 2022 Hedera Hashgraph, LLC | ||
| * | ||
| * 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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| import com.google.common.collect.HashMultimap; | ||
| import com.google.common.collect.Multimap; | ||
| import java.math.BigDecimal; | ||
| import java.math.RoundingMode; | ||
| import java.util.Collection; | ||
| import java.util.HashMap; | ||
| import javax.inject.Named; | ||
| import lombok.CustomLog; | ||
| import lombok.RequiredArgsConstructor; | ||
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| import com.hedera.mirror.common.domain.entity.EntityId; | ||
| import com.hedera.mirror.importer.addressbook.AddressBookService; | ||
| import com.hedera.mirror.importer.domain.FileStreamSignature; | ||
| import com.hedera.mirror.importer.exception.SignatureVerificationException; | ||
| import com.hedera.mirror.importer.repository.NodeStakeRepository; | ||
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| @CustomLog | ||
| @Named | ||
| @RequiredArgsConstructor | ||
| public class ConsensusValidatorImpl implements ConsensusValidator { | ||
| private final AddressBookService addressBookService; | ||
| private final CommonDownloaderProperties commonDownloaderProperties; | ||
| private final NodeStakeRepository nodeStakeRepository; | ||
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| /** | ||
| * Validates that the signature files satisfy the consensus requirement: | ||
| * <ol> | ||
| * <li>If NodeStakes are within the NodeStakeRepository, at least 1/3 of the total node stake amount has been | ||
| * signature verified.</li> | ||
| * <li>If no NodeStakes are in the NodeStakeRepository, At least 1/3 signature files are present</li> | ||
| * </ol> | ||
| * | ||
| * @param signatures a list of signature files which have the same filename | ||
| * @throws SignatureVerificationException | ||
| */ | ||
| @Override | ||
| public void validate(Collection<FileStreamSignature> signatures) throws SignatureVerificationException { | ||
| Multimap<String, FileStreamSignature> signatureHashMap = HashMultimap.create(); | ||
| for (var signature : signatures) { | ||
| if (signature.getStatus() == FileStreamSignature.SignatureStatus.VERIFIED) { | ||
| signatureHashMap.put(signature.getFileHashAsHex(), signature); | ||
| } | ||
| } | ||
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| var filename = signatures.stream().map(FileStreamSignature::getFilename).findFirst().orElse("unknown"); | ||
| if (BigDecimal.ZERO.equals(commonDownloaderProperties.getConsensusRatio()) && signatureHashMap.size() > 0) { | ||
| log.debug("Signature file {} does not require consensus, skipping consensus check", filename); | ||
| return; | ||
| } | ||
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| long totalStake = 0; | ||
| var nodeAccountIdToStakeMap = new HashMap<EntityId, Long>(); | ||
| var addressBook = addressBookService.getCurrent(); | ||
| var nodeStakes = nodeStakeRepository.findLatest(); | ||
| if (nodeStakes.isEmpty()) { | ||
| var nodeAccountIDPubKeyMap = addressBook.getNodeAccountIDPubKeyMap(); | ||
| totalStake = nodeAccountIDPubKeyMap.size(); | ||
| } else { | ||
| var nodeIdToNodeAccountIdMap = addressBook.getNodeIdNodeAccountIdMap(); | ||
| for (var nodeStake : nodeStakes) { | ||
| totalStake += nodeStake.getStake(); | ||
| var nodeAccountId = nodeIdToNodeAccountIdMap.get(nodeStake.getNodeId()); | ||
| if (nodeAccountId == null) { | ||
| log.warn("Node Stake found for Node Id {} but no Node Account Id found", nodeStake.getNodeId()); | ||
| continue; | ||
| } | ||
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| nodeAccountIdToStakeMap.put(nodeAccountId, nodeStake.getStake()); | ||
| } | ||
| } | ||
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| long consensusCount = 0; | ||
| for (String key : signatureHashMap.keySet()) { | ||
| var validatedSignatures = signatureHashMap.get(key); | ||
| long stake = 0L; | ||
| for (var signature : validatedSignatures) { | ||
| // If the map has no entry for the node account id, a default value of 1 is used to count a signature. | ||
| stake += nodeAccountIdToStakeMap.getOrDefault(signature.getNodeAccountId(), 1L); | ||
| } | ||
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| if (canReachConsensus(stake, totalStake)) { | ||
| consensusCount += validatedSignatures.size(); | ||
| validatedSignatures.forEach(s -> s.setStatus(FileStreamSignature.SignatureStatus.CONSENSUS_REACHED)); | ||
| } | ||
| } | ||
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| if (consensusCount > 0) { | ||
| return; | ||
| } | ||
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| throw new SignatureVerificationException(String.format("Consensus not reached for file %s", filename)); | ||
| } | ||
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| private boolean canReachConsensus(long stake, long totalStake) { | ||
| log.info("Stake: {}, Total Stake: {}", stake, totalStake); | ||
| log.info("Consensus Ratio: {}", commonDownloaderProperties.getConsensusRatio()); | ||
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| var stakeRequiredForConsensus = BigDecimal.valueOf(totalStake) | ||
| .multiply(commonDownloaderProperties.getConsensusRatio()) | ||
| .setScale(0, RoundingMode.CEILING); | ||
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| log.info("Stake Required For Consensus: {}", stakeRequiredForConsensus); | ||
| log.info("Result: {}", BigDecimal.valueOf(stake).compareTo(stakeRequiredForConsensus) >= 0); | ||
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| return BigDecimal.valueOf(stake).compareTo(stakeRequiredForConsensus) >= 0; | ||
| } | ||
| } |
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