core/types: add EffectiveGasPrice in Receipt (#26713)

This change adds a struct field EffectiveGasPrice in types.Receipt. The field is present
in RPC responses, but not in the Go struct, and thus can't easily be accessed via ethclient.

Co-authored-by: PulsarAI <dev@pulsar-systems.fi>

Author: fjl

core/blockchain.go

@@ -2049,7 +2049,7 @@ func (bc *BlockChain) recoverAncestors(block *types.Block) (common.Hash, error)
 // the processing of a block. These logs are later announced as deleted or reborn.
 func (bc *BlockChain) collectLogs(b *types.Block, removed bool) []*types.Log {
 	receipts := rawdb.ReadRawReceipts(bc.db, b.Hash(), b.NumberU64())
-	receipts.DeriveFields(bc.chainConfig, b.Hash(), b.NumberU64(), b.Transactions())
+	receipts.DeriveFields(bc.chainConfig, b.Hash(), b.NumberU64(), b.BaseFee(), b.Transactions())
 
 	var logs []*types.Log
 	for _, receipt := range receipts {

core/rawdb/accessors_chain.go

@@ -636,7 +636,14 @@ func ReadReceipts(db ethdb.Reader, hash common.Hash, number uint64, config *para
 		log.Error("Missing body but have receipt", "hash", hash, "number", number)
 		return nil
 	}
-	if err := receipts.DeriveFields(config, hash, number, body.Transactions); err != nil {
+	header := ReadHeader(db, hash, number)
+	var baseFee *big.Int
+	if header == nil {
+		baseFee = big.NewInt(0)
+	} else {
+		baseFee = header.BaseFee
+	}
+	if err := receipts.DeriveFields(config, hash, number, baseFee, body.Transactions); err != nil {
 		log.Error("Failed to derive block receipts fields", "hash", hash, "number", number, "err", err)
 		return nil
 	}

core/types/gen_receipt_json.go

@@ -59,10 +59,10 @@ type Receipt struct {
 	Logs              []*Log `json:"logs"              gencodec:"required"`
 
 	// Implementation fields: These fields are added by geth when processing a transaction.
-	// They are stored in the chain database.
-	TxHash          common.Hash    `json:"transactionHash" gencodec:"required"`
-	ContractAddress common.Address `json:"contractAddress"`
-	GasUsed         uint64         `json:"gasUsed" gencodec:"required"`
+	TxHash            common.Hash    `json:"transactionHash" gencodec:"required"`
+	ContractAddress   common.Address `json:"contractAddress"`
+	GasUsed           uint64         `json:"gasUsed" gencodec:"required"`
+	EffectiveGasPrice *big.Int       `json:"effectiveGasPrice"`
 
 	// Inclusion information: These fields provide information about the inclusion of the
 	// transaction corresponding to this receipt.
@@ -313,7 +313,7 @@ func (rs Receipts) EncodeIndex(i int, w *bytes.Buffer) {
 
 // DeriveFields fills the receipts with their computed fields based on consensus
 // data and contextual infos like containing block and transactions.
-func (rs Receipts) DeriveFields(config *params.ChainConfig, hash common.Hash, number uint64, txs Transactions) error {
+func (rs Receipts) DeriveFields(config *params.ChainConfig, hash common.Hash, number uint64, baseFee *big.Int, txs []*Transaction) error {
 	signer := MakeSigner(config, new(big.Int).SetUint64(number))
 
 	logIndex := uint(0)
@@ -325,6 +325,8 @@ func (rs Receipts) DeriveFields(config *params.ChainConfig, hash common.Hash, nu
 		rs[i].Type = txs[i].Type()
 		rs[i].TxHash = txs[i].Hash()
 
+		rs[i].EffectiveGasPrice = txs[i].inner.effectiveGasPrice(new(big.Int), baseFee)
+
 		// block location fields
 		rs[i].BlockHash = hash
 		rs[i].BlockNumber = new(big.Int).SetUint64(number)
@@ -335,13 +337,17 @@ func (rs Receipts) DeriveFields(config *params.ChainConfig, hash common.Hash, nu
 			// Deriving the signer is expensive, only do if it's actually needed
 			from, _ := Sender(signer, txs[i])
 			rs[i].ContractAddress = crypto.CreateAddress(from, txs[i].Nonce())
+		} else {
+			rs[i].ContractAddress = common.Address{}
 		}
+
 		// The used gas can be calculated based on previous r
 		if i == 0 {
 			rs[i].GasUsed = rs[i].CumulativeGasUsed
 		} else {
 			rs[i].GasUsed = rs[i].CumulativeGasUsed - rs[i-1].CumulativeGasUsed
 		}
+
 		// The derived log fields can simply be set from the block and transaction
 		for j := 0; j < len(rs[i].Logs); j++ {
 			rs[i].Logs[j].BlockNumber = number