params: core: enable shanghai based on timestamps

cmd/devp2p/internal/ethtest/chain.go

@@ -76,7 +76,7 @@ func (c *Chain) RootAt(height int) common.Hash {
 
 // ForkID gets the fork id of the chain.
 func (c *Chain) ForkID() forkid.ID {
-	return forkid.NewID(c.chainConfig, c.blocks[0].Hash(), uint64(c.Len()))
+	return forkid.NewID(c.chainConfig, c.blocks[0].Hash(), uint64(c.Len()), c.blocks[0].Time())
 }
 
 // Shorten returns a copy chain of a desired height from the imported

cmd/geth/config.go

@@ -158,14 +158,9 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
 // makeFullNode loads geth configuration and creates the Ethereum backend.
 func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	stack, cfg := makeConfigNode(ctx)
-	if ctx.IsSet(utils.OverrideTerminalTotalDifficulty.Name) {
-		cfg.Eth.OverrideTerminalTotalDifficulty = flags.GlobalBig(ctx, utils.OverrideTerminalTotalDifficulty.Name)
+	if ctx.IsSet(utils.OverrideShanghai.Name) {
+		cfg.Eth.OverrideShanghai = flags.GlobalBig(ctx, utils.OverrideShanghai.Name)
 	}
-	if ctx.IsSet(utils.OverrideTerminalTotalDifficultyPassed.Name) {
-		override := ctx.Bool(utils.OverrideTerminalTotalDifficultyPassed.Name)
-		cfg.Eth.OverrideTerminalTotalDifficultyPassed = &override
-	}
-
 	backend, eth := utils.RegisterEthService(stack, &cfg.Eth)
 
 	// Configure log filter RPC API.

cmd/geth/main.go

@@ -64,8 +64,7 @@ var (
 		utils.NoUSBFlag,
 		utils.USBFlag,
 		utils.SmartCardDaemonPathFlag,
-		utils.OverrideTerminalTotalDifficulty,
-		utils.OverrideTerminalTotalDifficultyPassed,
+		utils.OverrideShanghai,
 		utils.EthashCacheDirFlag,
 		utils.EthashCachesInMemoryFlag,
 		utils.EthashCachesOnDiskFlag,

cmd/utils/flags.go

@@ -271,14 +271,9 @@ var (
 		Value:    2048,
 		Category: flags.EthCategory,
 	}
-	OverrideTerminalTotalDifficulty = &flags.BigFlag{
-		Name:     "override.terminaltotaldifficulty",
-		Usage:    "Manually specify TerminalTotalDifficulty, overriding the bundled setting",
-		Category: flags.EthCategory,
-	}
-	OverrideTerminalTotalDifficultyPassed = &cli.BoolFlag{
-		Name:     "override.terminaltotaldifficultypassed",
-		Usage:    "Manually specify TerminalTotalDifficultyPassed, overriding the bundled setting",
+	OverrideShanghai = &flags.BigFlag{
+		Name:     "override.shanghai",
+		Usage:    "Manually specify the Shanghai fork timestamp, overriding the bundled setting",
 		Category: flags.EthCategory,
 	}
 	// Light server and client settings

core/blockchain.go

@@ -318,7 +318,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 		if diskRoot != (common.Hash{}) {
 			log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash(), "snaproot", diskRoot)
 
-			snapDisk, err := bc.setHeadBeyondRoot(head.NumberU64(), diskRoot, true)
+			snapDisk, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, diskRoot, true)
 			if err != nil {
 				return nil, err
 			}
@@ -328,7 +328,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 			}
 		} else {
 			log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash())
-			if _, err := bc.setHeadBeyondRoot(head.NumberU64(), common.Hash{}, true); err != nil {
+			if _, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, common.Hash{}, true); err != nil {
 				return nil, err
 			}
 		}
@@ -427,7 +427,11 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 	// Rewind the chain in case of an incompatible config upgrade.
 	if compat, ok := genesisErr.(*params.ConfigCompatError); ok {
 		log.Warn("Rewinding chain to upgrade configuration", "err", compat)
-		bc.SetHead(compat.RewindTo)
+		if compat.RewindToTime > 0 {
+			bc.SetHeadWithTimestamp(compat.RewindToTime)
+		} else {
+			bc.SetHead(compat.RewindToBlock)
+		}
 		rawdb.WriteChainConfig(db, genesisHash, chainConfig)
 	}
 	// Start tx indexer/unindexer if required.
@@ -532,7 +536,20 @@ func (bc *BlockChain) loadLastState() error {
 // was fast synced or full synced and in which state, the method will try to
 // delete minimal data from disk whilst retaining chain consistency.
 func (bc *BlockChain) SetHead(head uint64) error {
-	if _, err := bc.setHeadBeyondRoot(head, common.Hash{}, false); err != nil {
+	if _, err := bc.setHeadBeyondRoot(head, 0, common.Hash{}, false); err != nil {
+		return err
+	}
+	// Send chain head event to update the transaction pool
+	bc.chainHeadFeed.Send(ChainHeadEvent{Block: bc.CurrentBlock()})
+	return nil
+}
+
+// SetHeadWithTimestamp rewinds the local chain to a new head that has at max
+// the given timestamp. Depending on whether the node was fast synced or full
+// synced and in which state, the method will try to delete minimal data from
+// disk whilst retaining chain consistency.
+func (bc *BlockChain) SetHeadWithTimestamp(timestamp uint64) error {
+	if _, err := bc.setHeadBeyondRoot(0, timestamp, common.Hash{}, false); err != nil {
 		return err
 	}
 	// Send chain head event to update the transaction pool
@@ -569,8 +586,12 @@ func (bc *BlockChain) SetSafe(block *types.Block) {
 // in which state, the method will try to delete minimal data from disk whilst
 // retaining chain consistency.
 //
+// The method also works in timestamp mode if `head == 0` but `time != 0`. In that
+// case blocks are rolled back until the new head becomes older or equal to the
+// requested time. If both `head` and `time` is 0, the chain is rewound to genesis.
+//
 // The method returns the block number where the requested root cap was found.
-func (bc *BlockChain) setHeadBeyondRoot(head uint64, root common.Hash, repair bool) (uint64, error) {
+func (bc *BlockChain) setHeadBeyondRoot(head uint64, time uint64, root common.Hash, repair bool) (uint64, error) {
 	if !bc.chainmu.TryLock() {
 		return 0, errChainStopped
 	}
@@ -584,7 +605,7 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, root common.Hash, repair bo
 	pivot := rawdb.ReadLastPivotNumber(bc.db)
 	frozen, _ := bc.db.Ancients()
 
-	updateFn := func(db ethdb.KeyValueWriter, header *types.Header) (uint64, bool) {
+	updateFn := func(db ethdb.KeyValueWriter, header *types.Header) (*types.Header, bool) {
 		// Rewind the blockchain, ensuring we don't end up with a stateless head
 		// block. Note, depth equality is permitted to allow using SetHead as a
 		// chain reparation mechanism without deleting any data!
@@ -665,16 +686,18 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, root common.Hash, repair bo
 			bc.currentFastBlock.Store(newHeadFastBlock)
 			headFastBlockGauge.Update(int64(newHeadFastBlock.NumberU64()))
 		}
-		head := bc.CurrentBlock().NumberU64()
-
+		var (
+			headHeader = bc.CurrentBlock().Header()
+			headNumber = headHeader.Number.Uint64()
+		)
 		// If setHead underflown the freezer threshold and the block processing
 		// intent afterwards is full block importing, delete the chain segment
 		// between the stateful-block and the sethead target.
 		var wipe bool
-		if head+1 < frozen {
-			wipe = pivot == nil || head >= *pivot
+		if headNumber+1 < frozen {
+			wipe = pivot == nil || headNumber >= *pivot
 		}
-		return head, wipe // Only force wipe if full synced
+		return headHeader, wipe // Only force wipe if full synced
 	}
 	// Rewind the header chain, deleting all block bodies until then
 	delFn := func(db ethdb.KeyValueWriter, hash common.Hash, num uint64) {
@@ -701,13 +724,18 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, root common.Hash, repair bo
 	// touching the header chain altogether, unless the freezer is broken
 	if repair {
 		if target, force := updateFn(bc.db, bc.CurrentBlock().Header()); force {
-			bc.hc.SetHead(target, updateFn, delFn)
+			bc.hc.SetHead(target.Number.Uint64(), updateFn, delFn)
 		}
 	} else {
 		// Rewind the chain to the requested head and keep going backwards until a
 		// block with a state is found or fast sync pivot is passed
-		log.Warn("Rewinding blockchain", "target", head)
-		bc.hc.SetHead(head, updateFn, delFn)
+		if time > 0 {
+			log.Warn("Rewinding blockchain to timestamp", "target", time)
+			bc.hc.SetHeadWithTimestamp(time, updateFn, delFn)
+		} else {
+			log.Warn("Rewinding blockchain to block", "target", head)
+			bc.hc.SetHead(head, updateFn, delFn)
+		}
 	}
 	// Clear out any stale content from the caches
 	bc.bodyCache.Purge()

core/blockchain_test.go

@@ -4275,7 +4275,7 @@ func TestEIP3651(t *testing.T) {
 
 	gspec.Config.BerlinBlock = common.Big0
 	gspec.Config.LondonBlock = common.Big0
-	gspec.Config.ShanghaiBlock = common.Big0
+	gspec.Config.ShanghaiTime = common.Big0
 	signer := types.LatestSigner(gspec.Config)
 
 	_, blocks, _ := GenerateChainWithGenesis(gspec, engine, 1, func(i int, b *BlockGen) {