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...a/org/hyperledger/besu/ethereum/trie/diffbased/bonsai/storage/CachingPreImageStorage.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,201 @@ | ||
| /* | ||
| * Copyright contributors to Hyperledger Besu. | ||
| * | ||
| * 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. | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.hyperledger.besu.ethereum.trie.diffbased.bonsai.storage; | ||
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| import org.hyperledger.besu.datatypes.Address; | ||
| import org.hyperledger.besu.datatypes.Hash; | ||
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| import java.util.Map; | ||
| import java.util.NoSuchElementException; | ||
| import java.util.Objects; | ||
| import java.util.Optional; | ||
| import java.util.stream.Stream; | ||
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|
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| import com.github.benmanes.caffeine.cache.Cache; | ||
| import com.github.benmanes.caffeine.cache.Caffeine; | ||
| import com.google.common.collect.BiMap; | ||
| import com.google.common.collect.HashBiMap; | ||
| import org.apache.tuweni.bytes.Bytes; | ||
| import org.apache.tuweni.bytes.Bytes32; | ||
| import org.apache.tuweni.units.bigints.UInt256; | ||
|
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| /** Acts as both a Hasher and PreImageStorage for Bonsai storage format. */ | ||
| public interface CachingPreImageStorage { | ||
|
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| enum HashSource { | ||
| ACCOUNT_ADDRESS((byte) 0x00), | ||
| SLOT_KEY((byte) 0x01); | ||
| byte internal_type; | ||
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| HashSource(final byte type) { | ||
| internal_type = type; | ||
| } | ||
|
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| byte getTypeSuffix() { | ||
| return internal_type; | ||
| } | ||
|
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| static HashSource wrap(final byte val) { | ||
| if (val == 0x00) { | ||
| return ACCOUNT_ADDRESS; | ||
| } else if (val == 0x01) { | ||
| return SLOT_KEY; | ||
| } else { | ||
| throw new NoSuchElementException(String.format("Value %x is not a preimage source", val)); | ||
| } | ||
| } | ||
| } | ||
|
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| record HashKey(Hash hashValue, HashSource source) {} | ||
|
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| /** | ||
| * If address value is not already present, save in preImage store and return the hash value. | ||
| * | ||
| * @param value value to hash | ||
| * @return Hash of value | ||
| */ | ||
| Hash hashAndSaveAddressPreImage(final Bytes value); | ||
|
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| /** | ||
| * If slot value is not already present, save in preImage store and return the hash value. | ||
| * | ||
| * @param keyUInt value to hash | ||
| * @return Hash of value | ||
| */ | ||
| Hash hashAndSaveSlotKeyPreImage(final UInt256 keyUInt); | ||
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| Stream<Address> streamAddressPreImages(final Bytes32 startKeyHash, final int limit); | ||
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| Optional<UInt256> getStorageTrieKeyPreimage(final Bytes32 trieKey); | ||
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| Optional<Address> getAccountTrieKeyPreimage(final Bytes32 trieKey); | ||
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| Optional<Bytes> getRawHashPreImage(final Hash hash); | ||
|
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| /** | ||
| * This method indicates whether this Pre-Image store is "complete", meaning it has all of the | ||
| * hash preimages for all entries in the state trie. | ||
| * | ||
| * @return boolean indicating whether the pre-image store is complete or not | ||
| */ | ||
| default boolean canSupportStreaming() { | ||
| return false; | ||
| } | ||
|
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| /** | ||
| * A caching PreImageProxy suitable for ReferenceTestWorldState which saves hashes in an unbounded | ||
| * BiMap. | ||
| */ | ||
| class UnboundedPreImageStorage implements CachingPreImageStorage { | ||
| BiMap<HashKey, Bytes> preImageCache = HashBiMap.create(); | ||
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| @Override | ||
| public Hash hashAndSaveAddressPreImage(final Bytes value) { | ||
| return preImageCache | ||
| .inverse() | ||
| .computeIfAbsent( | ||
| value, v -> new HashKey(Address.wrap(v).addressHash(), HashSource.ACCOUNT_ADDRESS)) | ||
| .hashValue(); | ||
| } | ||
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| @Override | ||
| public Hash hashAndSaveSlotKeyPreImage(final UInt256 value) { | ||
| return preImageCache | ||
| .inverse() | ||
| .computeIfAbsent(value, v -> new HashKey(Hash.hash(v), HashSource.SLOT_KEY)) | ||
| .hashValue(); | ||
| } | ||
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| @Override | ||
| public Stream<Address> streamAddressPreImages(final Bytes32 startKeyHash, final int limit) { | ||
| final Hash startHash = Hash.wrap(startKeyHash); | ||
| return preImageCache.entrySet().stream() | ||
| .filter(entry -> entry.getKey().source() == HashSource.ACCOUNT_ADDRESS) | ||
| .filter(entry -> entry.getKey().hashValue().compareTo(startHash) >= 0) | ||
| .map(e -> Address.wrap(e.getValue())) | ||
| .limit(limit); | ||
| } | ||
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| @Override | ||
| public Optional<UInt256> getStorageTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return Optional.ofNullable( | ||
| preImageCache.get(new HashKey(Hash.wrap(trieKey), HashSource.SLOT_KEY))) | ||
| .map(UInt256::fromBytes); | ||
| } | ||
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| @Override | ||
| public Optional<Address> getAccountTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return Optional.ofNullable( | ||
| preImageCache.get(new HashKey(Hash.wrap(trieKey), HashSource.ACCOUNT_ADDRESS))) | ||
| .map(Address::wrap); | ||
| } | ||
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| @Override | ||
| public Optional<Bytes> getRawHashPreImage(final Hash hash) { | ||
| return Stream.of( | ||
| preImageCache.get(new HashKey(hash, HashSource.ACCOUNT_ADDRESS)), | ||
| preImageCache.get(new HashKey(hash, HashSource.SLOT_KEY))) | ||
| .filter(Objects::nonNull) | ||
| .findAny(); | ||
| } | ||
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| @Override | ||
| public boolean canSupportStreaming() { | ||
| return true; | ||
| } | ||
| } | ||
|
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| class CachingOnlyPreImageStorage implements CachingPreImageStorage { | ||
|
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| // TODO: config max size perhaps | ||
| private static final Cache<Bytes, Hash> preimageCache = | ||
| Caffeine.newBuilder().maximumSize(10000).build(); | ||
|
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| @Override | ||
| public Hash hashAndSaveAddressPreImage(final Bytes value) { | ||
| // defer to the static Address hash map used by the evm | ||
| return preimageCache.get(value, v -> Address.wrap(value).addressHash()); | ||
| } | ||
|
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| @Override | ||
| public Hash hashAndSaveSlotKeyPreImage(final UInt256 keyUInt) { | ||
| return preimageCache.get(keyUInt, Hash::hash); | ||
| } | ||
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| @Override | ||
| public Stream<Address> streamAddressPreImages(final Bytes32 startKeyHash, final int limit) { | ||
| // not configured for preimage streaming | ||
| return Stream.empty(); | ||
| } | ||
|
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| @Override | ||
| public Optional<UInt256> getStorageTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return getRawHashPreImage(Hash.wrap(trieKey)).map(UInt256::fromBytes); | ||
| } | ||
|
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| @Override | ||
| public Optional<Address> getAccountTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return getRawHashPreImage(Hash.wrap(trieKey)).map(Address::wrap); | ||
| } | ||
|
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| @Override | ||
| public Optional<Bytes> getRawHashPreImage(final Hash hash) { | ||
| return preimageCache.asMap().entrySet().stream() | ||
| .filter(e -> e.getValue().equals(hash)) | ||
| .findFirst() | ||
| .map(Map.Entry::getKey); | ||
| } | ||
| } | ||
| } |
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