txDAG transfer by gasless transaction (#28)

cmd/geth/main.go

@@ -168,6 +168,7 @@ var (
 		utils.RollupHaltOnIncompatibleProtocolVersionFlag,
 		utils.RollupSuperchainUpgradesFlag,
 		utils.ParallelTxDAGFlag,
+		utils.ParallelTxDAGSenderPrivFlag,
 		configFileFlag,
 		utils.LogDebugFlag,
 		utils.LogBacktraceAtFlag,

cmd/utils/flags.go

@@ -23,7 +23,6 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
-	"github.com/ethereum/go-ethereum/core/txpool/bundlepool"
 	"math"
 	"math/big"
 	"net"
@@ -35,6 +34,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/ethereum/go-ethereum/core/txpool/bundlepool"
+
 	pcsclite "github.com/gballet/go-libpcsclite"
 	gopsutil "github.com/shirou/gopsutil/mem"
 	"github.com/urfave/cli/v2"
@@ -1093,6 +1094,13 @@ Please note that --` + MetricsHTTPFlag.Name + ` must be set to start the server.
 		Usage:    "enable opcode optimization",
 		Category: flags.VMCategory,
 	}
+
+	ParallelTxDAGSenderPrivFlag = &cli.StringFlag{
+		Name:     "parallel.txdagsenderpriv",
+		Usage:    "private key of the sender who sends the TxDAG transactions",
+		Value:    "",
+		Category: flags.VMCategory,
+	}
 )
 
 var (
@@ -1981,6 +1989,13 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 		cfg.EnableParallelTxDAG = ctx.Bool(ParallelTxDAGFlag.Name)
 	}
 
+	if ctx.IsSet(ParallelTxDAGSenderPrivFlag.Name) {
+		priHex := ctx.String(ParallelTxDAGSenderPrivFlag.Name)
+		if cfg.Miner.ParallelTxDAGSenderPriv, err = crypto.HexToECDSA(priHex); err != nil {
+			Fatalf("Failed to parse txdag private key of %s, err: %v", ParallelTxDAGSenderPrivFlag.Name, err)
+		}
+	}
+
 	if ctx.IsSet(VMOpcodeOptimizeFlag.Name) {
 		cfg.EnableOpcodeOptimizing = ctx.Bool(VMOpcodeOptimizeFlag.Name)
 		if cfg.EnableOpcodeOptimizing {

miner/miner.go

@@ -19,14 +19,16 @@ package miner
 
 import (
 	"context"
+	"crypto/ecdsa"
 	"errors"
 	"fmt"
-	"github.com/ethereum/go-ethereum/consensus/misc/eip1559"
-	"github.com/ethereum/go-ethereum/consensus/misc/eip4844"
 	"math/big"
 	"sync"
 	"time"
 
+	"github.com/ethereum/go-ethereum/consensus/misc/eip1559"
+	"github.com/ethereum/go-ethereum/consensus/misc/eip4844"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/consensus"
@@ -107,6 +109,8 @@ type Config struct {
 	RollupComputePendingBlock bool // Compute the pending block from tx-pool, instead of copying the latest-block
 
 	Mev MevConfig // Mev configuration
+
+	ParallelTxDAGSenderPriv *ecdsa.PrivateKey // The private key for the parallel tx DAG sender
 }
 
 // DefaultConfig contains default settings for miner.

miner/worker.go

@@ -18,14 +18,16 @@ package miner
 
 import (
 	"context"
+	"crypto/ecdsa"
 	"errors"
 	"fmt"
-	mapset "github.com/deckarep/golang-set/v2"
 	"math/big"
 	"sync"
 	"sync/atomic"
 	"time"
 
+	mapset "github.com/deckarep/golang-set/v2"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/consensus/misc"
@@ -36,6 +38,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/txpool"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/eth/tracers"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
@@ -98,6 +101,10 @@ var (
 	txErrReplayMeter           = metrics.NewRegisteredMeter("miner/tx/replay", nil)
 )
 
+var (
+	DefaultTxDAGAddress = common.HexToAddress("0xda90000000000000000000000000000000000000")
+)
+
 // environment is the worker's current environment and holds all
 // information of the sealing block generation.
 type environment struct {
@@ -893,10 +900,32 @@ func (w *worker) commitTransactions(env *environment, txs *transactionsByPriceAn
 	}
 	var coalescedLogs []*types.Log
 
+	//append the tx DAG transaction to the block
+	appendTxDAG := func() {
+		// whether enable TxDAG
+		if !w.chain.TxDAGEnabledWhenMine() {
+			return
+		}
+		// TODO this is a placeholder for the tx DAG data that will be generated by the stateDB
+		txForDAG, err := w.generateDAGTx(env.state, env.signer, env.tcount, env.coinbase)
+		if err != nil {
+			log.Warn("failed to generate DAG tx", "err", err)
+			return
+		}
+		logs, err := w.commitTransaction(env, txForDAG)
+		if err != nil {
+			log.Warn("failed to commit DAG tx", "err", err)
+			return
+		}
+		coalescedLogs = append(coalescedLogs, logs...)
+		env.tcount++
+	}
+
 	for {
 		// Check interruption signal and abort building if it's fired.
 		if interrupt != nil {
 			if signal := interrupt.Load(); signal != commitInterruptNone {
+				appendTxDAG()
 				return signalToErr(signal)
 			}
 		}
@@ -970,6 +999,7 @@ func (w *worker) commitTransactions(env *environment, txs *transactionsByPriceAn
 			txErrUnknownMeter.Mark(1)
 		}
 	}
+	appendTxDAG()
 	if !w.isRunning() && len(coalescedLogs) > 0 {
 		// We don't push the pendingLogsEvent while we are sealing. The reason is that
 		// when we are sealing, the worker will regenerate a sealing block every 3 seconds.
@@ -988,6 +1018,58 @@ func (w *worker) commitTransactions(env *environment, txs *transactionsByPriceAn
 	return nil
 }
 
+// generateDAGTx generates a DAG transaction for the block
+func (w *worker) generateDAGTx(statedb *state.StateDB, signer types.Signer, txIndex int, coinbase common.Address) (*types.Transaction, error) {
+	if statedb == nil {
+		return nil, fmt.Errorf("failed to get state db, env.state=nil")
+	}
+
+	if signer == nil {
+		return nil, fmt.Errorf("current signer is nil")
+	}
+
+	//privateKey, err := crypto.HexToECDSA(privateKeyHex)
+	sender := w.config.ParallelTxDAGSenderPriv
+	receiver := DefaultTxDAGAddress
+	if sender == nil {
+		return nil, fmt.Errorf("missing sender private key")
+	}
+
+	// get txDAG data from the stateDB
+	txDAG, err := statedb.ResolveTxDAG(txIndex, []common.Address{coinbase, params.OptimismBaseFeeRecipient, params.OptimismL1FeeRecipient})
+	if txDAG == nil {
+		return nil, err
+	}
+	// txIndex is the index of this txDAG transaction
+	txDAG.SetTxDep(txIndex, types.TxDep{Flags: &types.NonDependentRelFlag})
+
+	publicKey := sender.Public()
+	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
+	if !ok {
+		return nil, fmt.Errorf("error casting public key to ECDSA")
+	}
+	fromAddress := crypto.PubkeyToAddress(*publicKeyECDSA)
+
+	// get nonce from the
+	nonce := statedb.GetNonce(fromAddress)
+
+	data, err := types.EncodeTxDAGCalldata(txDAG)
+	if err != nil {
+		return nil, fmt.Errorf("failed to encode txDAG, err: %v", err)
+	}
+
+	// Create the transaction
+	tx := types.NewTransaction(nonce, receiver, big.NewInt(0), 21100, big.NewInt(0), data)
+
+	// Sign the transaction with the private key
+	signedTx, err := types.SignTx(tx, signer, sender)
+	if err != nil {
+		return nil, fmt.Errorf("failed to sign transaction, err: %v", err)
+	}
+
+	return signedTx, nil
+}
+
 // generateParams wraps various of settings for generating sealing task.
 type generateParams struct {
 	timestamp   uint64            // The timstamp for sealing task