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Improve blob size transaction selector
Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>
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...ledger/besu/ethereum/blockcreation/txselection/selectors/BlobSizeTransactionSelector.java
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| /* | ||
| * 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.blockcreation.txselection.selectors; | ||
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| import org.hyperledger.besu.ethereum.blockcreation.txselection.BlockSelectionContext; | ||
| import org.hyperledger.besu.ethereum.blockcreation.txselection.TransactionEvaluationContext; | ||
| import org.hyperledger.besu.ethereum.blockcreation.txselection.TransactionSelectionResults; | ||
| import org.hyperledger.besu.ethereum.processing.TransactionProcessingResult; | ||
| import org.hyperledger.besu.plugin.data.TransactionSelectionResult; | ||
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|
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| /** | ||
| * This class extends AbstractTransactionSelector and provides a specific implementation for | ||
| * evaluating transactions based on blobs size. It checks if a transaction supports blobs, and if | ||
| * so, checks that there is enough remaining data gas in the block to fit the blobs of the tx. | ||
| */ | ||
| public class BlobSizeTransactionSelector extends AbstractTransactionSelector { | ||
| private static final Logger LOG = LoggerFactory.getLogger(BlobSizeTransactionSelector.class); | ||
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| public BlobSizeTransactionSelector(final BlockSelectionContext context) { | ||
| super(context); | ||
| } | ||
|
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| /** | ||
| * Evaluates a transaction considering other transactions in the same block. If the tx does not | ||
| * support blobs, no check is performed, and SELECTED is returned, otherwise SELECTED is returned | ||
| * only if there is enough remaining blob gas to fit the blobs of the tx, otherwise a specific not | ||
| * selected result is returned, depending on the fact that the block already contains the max | ||
| * number of blobs or not. | ||
| * | ||
| * @param evaluationContext The current selection session data. | ||
| * @param transactionSelectionResults The results of other transaction evaluations in the same | ||
| * block. | ||
| * @return The result of the transaction selection. | ||
| */ | ||
| @Override | ||
| public TransactionSelectionResult evaluateTransactionPreProcessing( | ||
| final TransactionEvaluationContext evaluationContext, | ||
| final TransactionSelectionResults transactionSelectionResults) { | ||
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| final var tx = evaluationContext.getTransaction(); | ||
| if (tx.getType().supportsBlob()) { | ||
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| final var remainingBlobGas = | ||
| context.gasLimitCalculator().currentBlobGasLimit() | ||
| - transactionSelectionResults.getCumulativeBlobGasUsed(); | ||
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| if (remainingBlobGas == 0) { | ||
| LOG.atTrace() | ||
| .setMessage("The block already contains the max number of allowed blobs") | ||
| .addArgument(evaluationContext.getPendingTransaction()::toTraceLog) | ||
| .log(); | ||
| return TransactionSelectionResult.BLOBS_FULL; | ||
| } | ||
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| final long requestedBlobGas = context.gasCalculator().blobGasCost(tx.getBlobCount()); | ||
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| if (requestedBlobGas > remainingBlobGas) { | ||
| LOG.atTrace() | ||
| .setMessage( | ||
| "There is not enough blob gas available to fit the blobs of the transaction {} in the block." | ||
| + " Available {} / Requested {}") | ||
| .addArgument(evaluationContext.getPendingTransaction()::toTraceLog) | ||
| .addArgument(remainingBlobGas) | ||
| .addArgument(requestedBlobGas) | ||
| .log(); | ||
| return TransactionSelectionResult.TX_TOO_LARGE_FOR_REMAINING_BLOB_GAS; | ||
| } | ||
| } | ||
| return TransactionSelectionResult.SELECTED; | ||
| } | ||
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| @Override | ||
| public TransactionSelectionResult evaluateTransactionPostProcessing( | ||
| final TransactionEvaluationContext evaluationContext, | ||
| final TransactionSelectionResults blockTransactionResults, | ||
| final TransactionProcessingResult processingResult) { | ||
| // All necessary checks were done in the pre-processing method, so nothing to do here. | ||
| return TransactionSelectionResult.SELECTED; | ||
| } | ||
| } |
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