cmd, eth: switch the dev synctarget to hash from block (#28209)

* cmd, eth: switch the dev synctarget to hash from block

* cmd/utils, eth/catalyst: terminate node wyen synctarget reached

cmd/geth/config.go

@@ -32,6 +32,8 @@ import (
 	"github.com/ethereum/go-ethereum/accounts/scwallet"
 	"github.com/ethereum/go-ethereum/accounts/usbwallet"
 	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/eth/catalyst"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
@@ -199,17 +201,18 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	if ctx.IsSet(utils.GraphQLEnabledFlag.Name) {
 		utils.RegisterGraphQLService(stack, backend, filterSystem, &cfg.Node)
 	}
-
 	// Add the Ethereum Stats daemon if requested.
 	if cfg.Ethstats.URL != "" {
 		utils.RegisterEthStatsService(stack, backend, cfg.Ethstats.URL)
 	}
-
 	// Configure full-sync tester service if requested
-	if ctx.IsSet(utils.SyncTargetFlag.Name) && cfg.Eth.SyncMode == downloader.FullSync {
-		utils.RegisterFullSyncTester(stack, eth, ctx.Path(utils.SyncTargetFlag.Name))
+	if ctx.IsSet(utils.SyncTargetFlag.Name) {
+		hex := hexutil.MustDecode(ctx.String(utils.SyncTargetFlag.Name))
+		if len(hex) != common.HashLength {
+			utils.Fatalf("invalid sync target length: have %d, want %d", len(hex), common.HashLength)
+		}
+		utils.RegisterFullSyncTester(stack, eth, common.BytesToHash(hex))
 	}
-
 	// Start the dev mode if requested, or launch the engine API for
 	// interacting with external consensus client.
 	if ctx.IsSet(utils.DeveloperFlag.Name) {

cmd/utils/flags.go

@@ -18,7 +18,6 @@
 package utils
 
 import (
-	"bytes"
 	"context"
 	"crypto/ecdsa"
 	"encoding/hex"
@@ -39,11 +38,9 @@ import (
 	"github.com/ethereum/go-ethereum/accounts/keystore"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/fdlimit"
-	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/txpool/legacypool"
-	"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/crypto/kzg4844"
@@ -72,7 +69,6 @@ import (
 	"github.com/ethereum/go-ethereum/p2p/nat"
 	"github.com/ethereum/go-ethereum/p2p/netutil"
 	"github.com/ethereum/go-ethereum/params"
-	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/trie"
 	"github.com/ethereum/go-ethereum/trie/triedb/hashdb"
@@ -595,9 +591,9 @@ var (
 	}
 
 	// MISC settings
-	SyncTargetFlag = &cli.PathFlag{
+	SyncTargetFlag = &cli.StringFlag{
 		Name:      "synctarget",
-		Usage:     `File for containing the hex-encoded block-rlp as sync target(dev feature)`,
+		Usage:     `Hash of the block to full sync to (dev testing feature)`,
 		TakesFile: true,
 		Category:  flags.MiscCategory,
 	}
@@ -1691,7 +1687,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	log.Debug("Sanitizing Go's GC trigger", "percent", int(gogc))
 	godebug.SetGCPercent(int(gogc))
 
-	if ctx.IsSet(SyncModeFlag.Name) {
+	if ctx.IsSet(SyncTargetFlag.Name) {
+		cfg.SyncMode = downloader.FullSync // dev sync target forces full sync
+	} else if ctx.IsSet(SyncModeFlag.Name) {
 		cfg.SyncMode = *flags.GlobalTextMarshaler(ctx, SyncModeFlag.Name).(*downloader.SyncMode)
 	}
 	if ctx.IsSet(NetworkIdFlag.Name) {
@@ -1976,21 +1974,9 @@ func RegisterFilterAPI(stack *node.Node, backend ethapi.Backend, ethcfg *ethconf
 }
 
 // RegisterFullSyncTester adds the full-sync tester service into node.
-func RegisterFullSyncTester(stack *node.Node, eth *eth.Ethereum, path string) {
-	blob, err := os.ReadFile(path)
-	if err != nil {
-		Fatalf("Failed to read block file: %v", err)
-	}
-	rlpBlob, err := hexutil.Decode(string(bytes.TrimRight(blob, "\r\n")))
-	if err != nil {
-		Fatalf("Failed to decode block blob: %v", err)
-	}
-	var block types.Block
-	if err := rlp.DecodeBytes(rlpBlob, &block); err != nil {
-		Fatalf("Failed to decode block: %v", err)
-	}
-	catalyst.RegisterFullSyncTester(stack, eth, &block)
-	log.Info("Registered full-sync tester", "number", block.NumberU64(), "hash", block.Hash())
+func RegisterFullSyncTester(stack *node.Node, eth *eth.Ethereum, target common.Hash) {
+	catalyst.RegisterFullSyncTester(stack, eth, target)
+	log.Info("Registered full-sync tester", "hash", target)
 }
 
 func SetupMetrics(ctx *cli.Context) {