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68
.../core/src/main/java/org/hyperledger/besu/ethereum/bonsai/storage/BonsaiPreImageProxy.java
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|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /* | ||
| * Copyright Hyperledger Besu Contributors. | ||
| * | ||
| * 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.bonsai.storage; | ||
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|
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| import org.hyperledger.besu.datatypes.Address; | ||
| import org.hyperledger.besu.datatypes.Hash; | ||
| import org.hyperledger.besu.ethereum.worldstate.WorldStatePreimageStorage; | ||
|
|
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| import java.util.Optional; | ||
|
|
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| 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 BonsaiPreImageProxy extends WorldStatePreimageStorage { | ||
| /** | ||
| * If this value is not already present, save in preImage store and return the hash value. | ||
| * | ||
| * @param value value to hash | ||
| * @return Hash of value | ||
| */ | ||
| Hash hashAndSavePreImage(Bytes value); | ||
|
|
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| /** | ||
| * A caching PreImageProxy suitable for ReferenceTestWorldState which saves hashes in an unbounded | ||
| * BiMap. | ||
| */ | ||
| class BonsaiReferenceTestPreImageProxy implements BonsaiPreImageProxy { | ||
| BiMap<Hash, Bytes> preImageCache = HashBiMap.create(); | ||
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| @Override | ||
| public synchronized Hash hashAndSavePreImage(final Bytes value) { | ||
| return preImageCache.inverse().computeIfAbsent(value, Hash::hash); | ||
| } | ||
|
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| @Override | ||
| public Optional<UInt256> getStorageTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return Optional.ofNullable(preImageCache.get(trieKey)).map(UInt256::fromBytes); | ||
| } | ||
|
|
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| @Override | ||
| public Optional<Address> getAccountTrieKeyPreimage(final Bytes32 trieKey) { | ||
| return Optional.ofNullable(preImageCache.get(trieKey)).map(Address::wrap); | ||
| } | ||
|
|
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| @Override | ||
| public Updater updater() { | ||
| throw new UnsupportedOperationException( | ||
| "BonsaiReferenceTestPreImageProxy does not implement an updater"); | ||
| } | ||
| } | ||
| } |
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