blob decoding

beacon_node/execution_layer/src/engine_api.rs

@@ -49,6 +49,7 @@ pub enum Error {
     UnsupportedForkVariant(String),
     BadConversion(String),
     RlpDecoderError(rlp::DecoderError),
+    BlobTxConversionError,
 }
 
 impl From<reqwest::Error> for Error {

beacon_node/execution_layer/src/lib.rs

@@ -22,12 +22,14 @@ use serde::{Deserialize, Serialize};
 use slog::{crit, debug, error, info, trace, warn, Logger};
 use slot_clock::SlotClock;
 use std::collections::HashMap;
+use std::default::default;
 use std::fmt;
 use std::future::Future;
 use std::io::Write;
 use std::path::PathBuf;
 use std::sync::Arc;
 use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
+use ethers_core::types::transaction::eip2930::AccessListItem;
 use strum::AsRefStr;
 use task_executor::TaskExecutor;
 use tokio::{
@@ -35,6 +37,8 @@ use tokio::{
     time::sleep,
 };
 use tokio_stream::wrappers::WatchStream;
+use types::consts::eip4844::BLOB_TX_TYPE;
+use types::transaction::{AccessTuple, BlobTransaction};
 use types::{AbstractExecPayload, BeaconStateError, Blob, ExecPayload, KzgCommitment};
 use types::{
     BlindedPayload, BlockType, ChainSpec, Epoch, ExecutionBlockHash, ForkName,
@@ -1616,7 +1620,59 @@ impl<T: EthSpec> ExecutionLayer<T> {
             block
                 .transactions()
                 .iter()
-                .map(|transaction| VariableList::new(transaction.rlp().to_vec()))
+                .map(|transaction: Transaction| {
+                    let tx_type = transaction
+                        .transaction_type
+                        .ok_or(ApiError::BlobTxConversionError)?.as_u64();
+                    let tx = if BLOB_TX_TYPE as u64 == tx_type {
+                            let chain_id = transaction
+                                .chain_id
+                                .ok_or(ApiError::BlobTxConversionError)?;
+                            let nonce = transaction.nonce.as_u64();
+                            let max_priority_fee_per_gas = transaction
+                                .max_priority_fee_per_gas
+                                .ok_or(ApiError::BlobTxConversionError)?;
+                            let max_fee_per_gas = transaction
+                                .max_fee_per_gas
+                                .ok_or(ApiError::BlobTxConversionError)?;
+                            let gas = transaction.gas.as_u64();
+                            let to = transaction.to;
+                            let value = transaction.value;
+                            let data = VariableList::from(transaction.input.to_vec());
+                            let access_list = VariableList::from(transaction
+                                .access_list
+                                .ok_or(ApiError::BlobTxConversionError)?
+                                .0
+                                .into_iter().map(|access_tuple| Ok(AccessTuple {
+                                    address: access_tuple.address,
+                                    storage_keys: VariableList::from(
+                                        access_tuple
+                                            .storage_keys,
+                                    ),
+                                }))
+                                .collect::<Result<Vec<AccessTuple>, ApiError>>()?);
+                            let max_fee_per_data_gas = transaction.other.get("max_fee_per_data_gas").ok_or(ApiError::BlobTxConversionError)?;
+                            let data_str = max_fee_per_data_gas.as_str().ok_or(ApiError::BlobTxConversionError)?;
+                            let blob_versioned_hashes = transaction.other.get("blob_versioned_hashes").ok_or(ApiError::BlobTxConversionError)?;
+                            Ok(BlobTransaction {
+                                chain_id,
+                                nonce,
+                                max_priority_fee_per_gas,
+                                max_fee_per_gas,
+                                gas,
+                                to,
+                                value,
+                                data,
+                                access_list,
+                                max_fee_per_data_gas,
+                                blob_versioned_hashes,
+                            });
+                        vec![]
+                    } else {
+                        transaction.rlp().to_vec()
+                    };
+                    VariableList::new(tx)
+                })
                 .collect::<Result<_, _>>()
                 .map_err(ApiError::DeserializeTransaction)?,
         )