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Reject a tx, sent via eth_sendRawTransaction, if its simulation fails
Signed-off-by: Fabio Di Fabio <[email protected]>
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116 changes: 116 additions & 0 deletions
116
...n/java/net/consensys/linea/sequencer/txpoolvalidation/validators/SimulationValidator.java
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|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * Copyright Consensys Software Inc. | ||
| * | ||
| * 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 net.consensys.linea.sequencer.txpoolvalidation.validators; | ||
|
|
||
| import static net.consensys.linea.sequencer.modulelimit.ModuleLineCountValidator.ModuleLineCountResult.MODULE_NOT_DEFINED; | ||
| import static net.consensys.linea.sequencer.modulelimit.ModuleLineCountValidator.ModuleLineCountResult.TX_MODULE_LINE_COUNT_OVERFLOW; | ||
|
|
||
| import java.util.Map; | ||
| import java.util.Optional; | ||
|
|
||
| import lombok.extern.slf4j.Slf4j; | ||
| import net.consensys.linea.config.LineaL1L2BridgeConfiguration; | ||
| import net.consensys.linea.sequencer.modulelimit.ModuleLimitsValidationResult; | ||
| import net.consensys.linea.sequencer.modulelimit.ModuleLineCountValidator; | ||
| import net.consensys.linea.zktracer.ZkTracer; | ||
| import org.hyperledger.besu.datatypes.Transaction; | ||
| import org.hyperledger.besu.plugin.data.BlockHeader; | ||
| import org.hyperledger.besu.plugin.services.BlockchainService; | ||
| import org.hyperledger.besu.plugin.services.TransactionSimulationService; | ||
| import org.hyperledger.besu.plugin.services.txvalidator.PluginTransactionPoolValidator; | ||
|
|
||
| @Slf4j | ||
| public class SimulationValidator implements PluginTransactionPoolValidator { | ||
| private final BlockchainService blockchainService; | ||
| private final TransactionSimulationService transactionSimulationService; | ||
| private final Map<String, Integer> moduleLineLimitsMap; | ||
| private final LineaL1L2BridgeConfiguration l1L2BridgeConfiguration; | ||
|
|
||
| public SimulationValidator( | ||
| final BlockchainService blockchainService, | ||
| final TransactionSimulationService transactionSimulationService, | ||
| final Map<String, Integer> moduleLineLimitsMap, | ||
| final LineaL1L2BridgeConfiguration l1L2BridgeConfiguration) { | ||
| this.blockchainService = blockchainService; | ||
| this.transactionSimulationService = transactionSimulationService; | ||
| this.moduleLineLimitsMap = moduleLineLimitsMap; | ||
| this.l1L2BridgeConfiguration = l1L2BridgeConfiguration; | ||
| } | ||
|
|
||
| @Override | ||
| public Optional<String> validateTransaction( | ||
| final Transaction transaction, final boolean isLocal, final boolean hasPriority) { | ||
|
|
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| final ModuleLineCountValidator moduleLineCountValidator = | ||
| new ModuleLineCountValidator(moduleLineLimitsMap); | ||
| final var chainHeadHeader = blockchainService.getChainHeadHeader(); | ||
|
|
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| final var zkTracer = createZkTracer(chainHeadHeader); | ||
| final var maybeSimulationResults = | ||
| transactionSimulationService.simulate( | ||
| transaction, chainHeadHeader.getBlockHash(), zkTracer, true); | ||
|
|
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| ModuleLimitsValidationResult moduleLimit = | ||
| moduleLineCountValidator.validate(zkTracer.getModulesLineCount()); | ||
|
|
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| if (moduleLimit.getResult() != ModuleLineCountValidator.ModuleLineCountResult.VALID) { | ||
| return Optional.of(handleModuleOverLimit(moduleLimit)); | ||
| } | ||
|
|
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| if (maybeSimulationResults.isPresent()) { | ||
| final var simulationResult = maybeSimulationResults.get(); | ||
| if (simulationResult.isInvalid()) { | ||
| return Optional.of( | ||
| "Invalid transaction" | ||
| + simulationResult.getInvalidReason().map(ir -> ": " + ir).orElse("")); | ||
| } | ||
| if (!simulationResult.isSuccessful()) { | ||
| return Optional.of( | ||
| "Reverted transaction" | ||
| + simulationResult.getRevertReason().map(rr -> ": " + rr.toHexString()).orElse("")); | ||
| } | ||
| } | ||
|
|
||
| return Optional.empty(); | ||
| } | ||
|
|
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| private ZkTracer createZkTracer(final BlockHeader chainHeadHeader) { | ||
| var zkTracer = new ZkTracer(l1L2BridgeConfiguration); | ||
| zkTracer.traceStartConflation(1L); | ||
| zkTracer.traceStartBlock(chainHeadHeader); | ||
| return zkTracer; | ||
| } | ||
|
|
||
| private String handleModuleOverLimit(ModuleLimitsValidationResult moduleLimitResult) { | ||
| if (moduleLimitResult.getResult() == MODULE_NOT_DEFINED) { | ||
| String moduleNotDefinedMsg = | ||
| String.format( | ||
| "Module %s does not exist in the limits file.", moduleLimitResult.getModuleName()); | ||
| log.error(moduleNotDefinedMsg); | ||
| return moduleNotDefinedMsg; | ||
| } | ||
| if (moduleLimitResult.getResult() == TX_MODULE_LINE_COUNT_OVERFLOW) { | ||
| String txOverflowMsg = | ||
| String.format( | ||
| "Transaction line count for module %s=%s is above the limit %s", | ||
| moduleLimitResult.getModuleName(), | ||
| moduleLimitResult.getModuleLineCount(), | ||
| moduleLimitResult.getModuleLineLimit()); | ||
| log.warn(txOverflowMsg); | ||
| return txOverflowMsg; | ||
| } | ||
| return "Internal Error: do not know what to do with result: " + moduleLimitResult.getResult(); | ||
| } | ||
| } |
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