graphql: add support for tx types and tx access lists (#22491)

This adds support for EIP-2718 access list transactions in the GraphQL API.

Co-authored-by: Amit Shah <amitshah0t7@gmail.com>
Co-authored-by: Felix Lange <fjl@twurst.com>

graphql/graphql.go

@@ -151,6 +151,20 @@ func (l *Log) Data(ctx context.Context) hexutil.Bytes {
 	return l.log.Data
 }
 
+// AccessTuple represents EIP-2930
+type AccessTuple struct {
+	address     common.Address
+	storageKeys *[]common.Hash
+}
+
+func (at *AccessTuple) Address(ctx context.Context) common.Address {
+	return at.address
+}
+
+func (at *AccessTuple) StorageKeys(ctx context.Context) *[]common.Hash {
+	return at.storageKeys
+}
+
 // Transaction represents an Ethereum transaction.
 // backend and hash are mandatory; all others will be fetched when required.
 type Transaction struct {
@@ -342,6 +356,31 @@ func (t *Transaction) Logs(ctx context.Context) (*[]*Log, error) {
 	return &ret, nil
 }
 
+func (t *Transaction) Type(ctx context.Context) (*int32, error) {
+	tx, err := t.resolve(ctx)
+	if err != nil {
+		return nil, err
+	}
+	txType := int32(tx.Type())
+	return &txType, nil
+}
+
+func (t *Transaction) AccessList(ctx context.Context) (*[]*AccessTuple, error) {
+	tx, err := t.resolve(ctx)
+	if err != nil || tx == nil {
+		return nil, err
+	}
+	accessList := tx.AccessList()
+	ret := make([]*AccessTuple, 0, len(accessList))
+	for _, al := range accessList {
+		ret = append(ret, &AccessTuple{
+			address:     al.Address,
+			storageKeys: &al.StorageKeys,
+		})
+	}
+	return &ret, nil
+}
+
 func (t *Transaction) R(ctx context.Context) (hexutil.Big, error) {
 	tx, err := t.resolve(ctx)
 	if err != nil || tx == nil {