allow empty maxFeePerBlobGas for eth_call

CHANGELOG.md

@@ -13,15 +13,16 @@
 ### Additions and Improvements
 - `txpool_besuPendingTransactions`change parameter `numResults` to optional parameter [#6708](https://github.com/hyperledger/besu/pull/6708)
 - Extend `Blockchain` service [#6592](https://github.com/hyperledger/besu/pull/6592)
-- Add bft-style blockperiodseconds transitions to Clique [#6596](https://github.com/hyperledger/besu/pull/6596)
-- Add createemptyblocks transitions to Clique [#6608](https://github.com/hyperledger/besu/pull/6608)
+- Add bft-style `blockperiodseconds` transitions to Clique [#6596](https://github.com/hyperledger/besu/pull/6596)
+- Add `createemptyblocks` transitions to Clique [#6608](https://github.com/hyperledger/besu/pull/6608)
 - RocksDB database metadata refactoring [#6555](https://github.com/hyperledger/besu/pull/6555)
-- Make layered txpool aware of minGasPrice and minPriorityFeePerGas dynamic options [#6611](https://github.com/hyperledger/besu/pull/6611)
+- Make layered txpool aware of `minGasPrice` and `minPriorityFeePerGas` dynamic options [#6611](https://github.com/hyperledger/besu/pull/6611)
 - Update commons-compress to 1.26.0 [#6648](https://github.com/hyperledger/besu/pull/6648)
 - Update Vert.x to 4.5.4 [#6666](https://github.com/hyperledger/besu/pull/6666)
 - Refactor and extend `TransactionPoolValidatorService` [#6636](https://github.com/hyperledger/besu/pull/6636)
-- Transaction call object to accept both `input` and `data` field simultaneously if they are set to equal values [#6702](https://github.com/hyperledger/besu/pull/6702)
 - Introduce `TransactionSimulationService` [#6686](https://github.com/hyperledger/besu/pull/6686)
+- Transaction call object to accept both `input` and `data` field simultaneously if they are set to equal values [#6702](https://github.com/hyperledger/besu/pull/6702)
+- `eth_call` for blob tx allows for empty `maxFeePerBlobGas` [#6731](https://github.com/hyperledger/besu/pull/6731)
 
 ### Bug fixes
 - Fix txpool dump/restore race condition [#6665](https://github.com/hyperledger/besu/pull/6665)

ethereum/api/src/main/java/org/hyperledger/besu/ethereum/api/jsonrpc/internal/methods/EthCall.java

@@ -164,6 +164,11 @@ private boolean isAllowExceedingBalanceAutoSelection(
         callParams.getGasPrice() == null || Wei.ZERO.equals(callParams.getGasPrice());
 
     if (header.getBaseFee().isPresent()) {
+      if (callParams.getBlobVersionedHashes().isPresent()
+          && (callParams.getMaxFeePerBlobGas().isEmpty()
+              || callParams.getMaxFeePerBlobGas().get().equals(Wei.ZERO))) {
+        return true;
+      }
       boolean isZeroMaxFeePerGas = callParams.getMaxFeePerGas().orElse(Wei.ZERO).equals(Wei.ZERO);
       boolean isZeroMaxPriorityFeePerGas =
           callParams.getMaxPriorityFeePerGas().orElse(Wei.ZERO).equals(Wei.ZERO);

ethereum/api/src/test/resources/org/hyperledger/besu/ethereum/api/jsonrpc/eth/eth_call_blob_missing_maxFeePerBlobGas.json

@@ -16,7 +16,7 @@
   "response": {
     "jsonrpc": "2.0",
     "id": 4,
-    "error":{"code":-32603,"message":"Internal error"}
+    "result": "0x0000000000000000000000000000000000000000000000000000000000000001"
   },
   "statusCode": 200
 }

ethereum/api/src/test/resources/org/hyperledger/besu/ethereum/api/jsonrpc/eth/eth_call_blob_zero_fee.json

@@ -17,7 +17,7 @@
   "response": {
     "jsonrpc": "2.0",
     "id": 4,
-    "error":{"code":-32009,"message":"blob gas price below current blob base fee"}
+    "result": "0x0000000000000000000000000000000000000000000000000000000000000001"
   },
   "statusCode": 200
 }

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetTransactionValidator.java

@@ -173,12 +173,13 @@ private ValidationResult<TransactionInvalidReason> validateCostAndFee(
       if (maybeBlobFee.isEmpty()) {
         throw new IllegalArgumentException(
             "blob fee must be provided from blocks containing blobs");
+        // tx.getMaxFeePerBlobGas can be empty for eth_call
       } else if (!transactionValidationParams.allowUnderpriced()
           && maybeBlobFee.get().compareTo(transaction.getMaxFeePerBlobGas().get()) > 0) {
         return ValidationResult.invalid(
             TransactionInvalidReason.BLOB_GAS_PRICE_BELOW_CURRENT_BLOB_BASE_FEE,
             String.format(
-                "max fee per blob gas less than block blob gas fee: address %s blobGasFeeCap: %s, blobBaseFee: %s",
+                "tx max fee per blob gas less than block blob gas fee: address %s blobGasFeeCap: %s, blobBaseFee: %s",
                 transaction.getSender().toHexString(),
                 transaction.getMaxFeePerBlobGas().get().toHumanReadableString(),
                 maybeBlobFee.get().toHumanReadableString()));

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/transaction/CallParameter.java

@@ -26,7 +26,7 @@
 
 import org.apache.tuweni.bytes.Bytes;
 
-// Represents parameters for a eth_call or eth_estimateGas JSON-RPC methods.
+// Represents parameters for eth_call and eth_estimateGas JSON-RPC methods.
 public class CallParameter {
 
   private final Address from;

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/transaction/TransactionSimulator.java

@@ -247,6 +247,18 @@ public Optional<TransactionSimulatorResult> processWithWorldUpdater(
     final MainnetTransactionProcessor transactionProcessor =
         protocolSchedule.getByBlockHeader(blockHeaderToProcess).getTransactionProcessor();
 
+    final Optional<BlockHeader> maybeParentHeader =
+        blockchain.getBlockHeader(blockHeaderToProcess.getParentHash());
+    final Wei blobGasPrice =
+        transactionValidationParams.isAllowExceedingBalance()
+            ? Wei.ZERO
+            : protocolSpec
+                .getFeeMarket()
+                .blobGasPricePerGas(
+                    maybeParentHeader
+                        .map(parent -> calculateExcessBlobGasForParent(protocolSpec, parent))
+                        .orElse(BlobGas.ZERO));
+
     final Optional<Transaction> maybeTransaction =
         buildTransaction(
             callParams,
@@ -256,21 +268,12 @@ public Optional<TransactionSimulatorResult> processWithWorldUpdater(
             nonce,
             gasLimit,
             value,
-            payload);
+            payload,
+            blobGasPrice);
     if (maybeTransaction.isEmpty()) {
       return Optional.empty();
     }
 
-    final Optional<BlockHeader> maybeParentHeader =
-        blockchain.getBlockHeader(blockHeaderToProcess.getParentHash());
-    final Wei blobGasPrice =
-        protocolSpec
-            .getFeeMarket()
-            .blobGasPricePerGas(
-                maybeParentHeader
-                    .map(parent -> calculateExcessBlobGasForParent(protocolSpec, parent))
-                    .orElse(BlobGas.ZERO));
-
     final Transaction transaction = maybeTransaction.get();
     final TransactionProcessingResult result =
         transactionProcessor.processTransaction(
@@ -298,7 +301,8 @@ private Optional<Transaction> buildTransaction(
       final long nonce,
       final long gasLimit,
       final Wei value,
-      final Bytes payload) {
+      final Bytes payload,
+      final Wei blobGasPrice) {
     final Transaction.Builder transactionBuilder =
         Transaction.builder()
             .nonce(nonce)
@@ -313,20 +317,21 @@ private Optional<Transaction> buildTransaction(
     callParams.getAccessList().ifPresent(transactionBuilder::accessList);
     // Set versioned hashes if present
     callParams.getBlobVersionedHashes().ifPresent(transactionBuilder::versionedHashes);
-    // Set max fee per blob gas if present
-    callParams.getMaxFeePerBlobGas().ifPresent(transactionBuilder::maxFeePerBlobGas);
 
     final Wei gasPrice;
     final Wei maxFeePerGas;
     final Wei maxPriorityFeePerGas;
+    final Wei maxFeePerBlobGas;
     if (transactionValidationParams.isAllowExceedingBalance()) {
       gasPrice = Wei.ZERO;
       maxFeePerGas = Wei.ZERO;
       maxPriorityFeePerGas = Wei.ZERO;
+      maxFeePerBlobGas = Wei.ZERO;
     } else {
       gasPrice = callParams.getGasPrice() != null ? callParams.getGasPrice() : Wei.ZERO;
       maxFeePerGas = callParams.getMaxFeePerGas().orElse(gasPrice);
       maxPriorityFeePerGas = callParams.getMaxPriorityFeePerGas().orElse(gasPrice);
+      maxFeePerBlobGas = callParams.getMaxFeePerBlobGas().orElse(blobGasPrice);
     }
     if (header.getBaseFee().isEmpty()) {
       transactionBuilder.gasPrice(gasPrice);
@@ -337,6 +342,9 @@ private Optional<Transaction> buildTransaction(
     }
 
     transactionBuilder.guessType();
+    if (transactionBuilder.getTransactionType().supportsBlob()) {
+      transactionBuilder.maxFeePerBlobGas(maxFeePerBlobGas);
+    }
     if (transactionBuilder.getTransactionType().requiresChainId()) {
       transactionBuilder.chainId(
           protocolSchedule

ethereum/core/src/test/java/org/hyperledger/besu/ethereum/mainnet/MainnetTransactionValidatorTest.java

@@ -358,7 +358,7 @@ public void shouldRejectTransactionWithMaxBlobPriorityFeeSmallerThanBlobBaseFee(
         .isEqualTo(ValidationResult.invalid(BLOB_GAS_PRICE_BELOW_CURRENT_BLOB_BASE_FEE));
     assertThat(validationResult.getErrorMessage())
         .matches(
-            "max fee per blob gas less than block blob gas fee: address 0x[0-9a-f]+ blobGasFeeCap: 7 wei, blobBaseFee: 10 wei");
+            "tx max fee per blob gas less than block blob gas fee: address 0x[0-9a-f]+ blobGasFeeCap: 7 wei, blobBaseFee: 10 wei");
   }
 
   @Test