Allow API configuration to override supplied gasLimit (hyperledger#6978)

* allow gasLimit configuration for transaction simulation * revise unit test to reflect new behavior of rpcGasCap Signed-off-by: Karim Taam <[email protected]> Signed-off-by: garyschulte <[email protected]> Co-authored-by: Karim Taam <[email protected]>
fab-10 · May 1, 2024 · afea4e0 · afea4e0
1 parent 9006658
commit afea4e0
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Showing 2 changed files with 6 additions and 7 deletions.
diff --git a/...um/core/src/main/java/org/hyperledger/besu/ethereum/transaction/TransactionSimulator.java b/...um/core/src/main/java/org/hyperledger/besu/ethereum/transaction/TransactionSimulator.java
@@ -235,11 +235,8 @@ public Optional<TransactionSimulatorResult> processWithWorldUpdater(
             ? callParams.getGasLimit()
             : blockHeaderToProcess.getGasLimit();
     if (rpcGasCap > 0) {
-      final long gasCap = rpcGasCap;
-      if (gasCap < gasLimit) {
-        gasLimit = gasCap;
-        LOG.info("Capping gasLimit to " + gasCap);
-      }
+      gasLimit = rpcGasCap;
+      LOG.info("Capping gasLimit to " + rpcGasCap);
     }
     final Wei value = callParams.getValue() != null ? callParams.getValue() : Wei.ZERO;
     final Bytes payload = callParams.getPayload() != null ? callParams.getPayload() : Bytes.EMPTY;

diff --git a/...ore/src/test/java/org/hyperledger/besu/ethereum/transaction/TransactionSimulatorTest.java b/...ore/src/test/java/org/hyperledger/besu/ethereum/transaction/TransactionSimulatorTest.java
@@ -565,8 +565,9 @@ public void shouldCapGasLimitWhenOriginalTransactionExceedsGasCap() {
   }
 
   @Test
-  public void shouldKeepOriginalGasLimitWhenCapIsHigherThanOriginalValue() {
-    // generate a transaction with a gas limit that is lower than the gas cap
+  public void shouldUseRpcGasCapWhenCapIsHigherThanGasLimit() {
+    // generate a transaction with a gas limit that is lower than the gas cap,
+    // expect the gas cap to override parameter gas limit
     final CallParameter callParameter =
         eip1559TransactionCallParameter(Wei.ZERO, Wei.ZERO, GASCAP - 1);
 
@@ -589,6 +590,7 @@ public void shouldKeepOriginalGasLimitWhenCapIsHigherThanOriginalValue() {
             .value(callParameter.getValue())
             .payload(callParameter.getPayload())
             .signature(FAKE_SIGNATURE)
+            .gasLimit(GASCAP)
             .build();
 
     // call process with original transaction