initialize history pruning in BlockChain

core/blockchain.go

@@ -34,6 +34,7 @@ import (
 	"github.com/CortexFoundation/CortexTheseus/common/mclock"
 	"github.com/CortexFoundation/CortexTheseus/common/prque"
 	"github.com/CortexFoundation/CortexTheseus/consensus"
+	"github.com/CortexFoundation/CortexTheseus/core/history"
 	"github.com/CortexFoundation/CortexTheseus/core/rawdb"
 	"github.com/CortexFoundation/CortexTheseus/core/state"
 	"github.com/CortexFoundation/CortexTheseus/core/state/snapshot"
@@ -153,7 +154,7 @@ type CacheConfig struct {
 
 	// This defines the cutoff block for history expiry.
 	// Blocks before this number may be unavailable in the chain database.
-	HistoryPruningCutoff uint64
+	ChainHistoryMode history.HistoryMode
 }
 
 // defaultCacheConfig are the default caching values if none are specified by the
@@ -222,6 +223,7 @@ type BlockChain struct {
 	currentFastBlock      atomic.Value // Current head of the fast-sync chain (may be above the block chain!)
 	currentFinalizedBlock atomic.Value // Current finalized head
 	currentSafeBlock      atomic.Value // Current safe head
+	historyPrunePoint     atomic.Pointer[history.PrunePoint]
 
 	stateCache    *state.CachingDB // State database to reuse between imports (contains state cache)
 	txIndexer     *txIndexer
@@ -503,6 +505,12 @@ func (bc *BlockChain) loadLastState() error {
 	}
 	bc.hc.SetCurrentHeader(currentHeader)
 
+	// Initialize history pruning.
+	latest := max(currentBlock.NumberU64(), currentHeader.Number.Uint64())
+	if err := bc.initializeHistoryPruning(latest); err != nil {
+		return err
+	}
+
 	// Restore the last known head fast block
 	bc.currentFastBlock.Store(currentBlock)
 	headFastBlockGauge.Update(int64(currentBlock.NumberU64()))
@@ -541,9 +549,57 @@ func (bc *BlockChain) loadLastState() error {
 	if pivot := rawdb.ReadLastPivotNumber(bc.db); pivot != nil {
 		log.Info("Loaded last fast-sync pivot marker", "number", *pivot)
 	}
+	if pruning := bc.historyPrunePoint.Load(); pruning != nil {
+		log.Info("Chain history is pruned", "earliest", pruning.BlockNumber, "hash", pruning.BlockHash)
+	}
 	return nil
 }
 
+// initializeHistoryPruning sets bc.historyPrunePoint.
+func (bc *BlockChain) initializeHistoryPruning(latest uint64) error {
+	freezerTail, _ := bc.db.Tail()
+
+	switch bc.cacheConfig.ChainHistoryMode {
+	case history.KeepAll:
+		if freezerTail == 0 {
+			return nil
+		}
+		// The database was pruned somehow, so we need to figure out if it's a known
+		// configuration or an error.
+		predefinedPoint := history.PrunePoints[bc.genesisBlock.Hash()]
+		if predefinedPoint == nil || freezerTail != predefinedPoint.BlockNumber {
+			log.Error("Chain history database is pruned with unknown configuration", "tail", freezerTail)
+			return fmt.Errorf("unexpected database tail")
+		}
+		bc.historyPrunePoint.Store(predefinedPoint)
+		return nil
+
+	case history.KeepPostMerge:
+		if freezerTail == 0 && latest != 0 {
+			// This is the case where a user is trying to run with --history.chain
+			// postmerge directly on an existing DB. We could just trigger the pruning
+			// here, but it'd be a bit dangerous since they may not have intended this
+			// action to happen. So just tell them how to do it.
+			log.Error(fmt.Sprintf("Chain history mode is configured as %q, but database is not pruned.", bc.cacheConfig.ChainHistoryMode.String()))
+			log.Error(fmt.Sprintf("Run 'geth prune-history' to prune pre-merge history."))
+			return fmt.Errorf("history pruning requested via configuration")
+		}
+		predefinedPoint := history.PrunePoints[bc.genesisBlock.Hash()]
+		if predefinedPoint == nil {
+			log.Error("Chain history pruning is not supported for this network", "genesis", bc.genesisBlock.Hash())
+			return fmt.Errorf("history pruning requested for unknown network")
+		} else if freezerTail != predefinedPoint.BlockNumber {
+			log.Error("Chain history database is pruned to unknown block", "tail", freezerTail)
+			return fmt.Errorf("unexpected database tail")
+		}
+		bc.historyPrunePoint.Store(predefinedPoint)
+		return nil
+
+	default:
+		return fmt.Errorf("invalid history mode: %d", bc.cacheConfig.ChainHistoryMode)
+	}
+}
+
 // SetHead rewinds the local chain to a new head. 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.
@@ -846,7 +902,9 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error {
 	bc.hc.SetCurrentHeader(bc.genesisBlock.Header())
 	bc.currentFastBlock.Store(bc.genesisBlock)
 	headFastBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
-	return nil
+
+	// Reset history pruning status.
+	return bc.initializeHistoryPruning(0)
 }
 
 // Export writes the active chain to the given writer.
@@ -2325,9 +2383,3 @@ func (bc *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (i
 	_, err := bc.hc.InsertHeaderChain(chain, start)
 	return 0, err
 }
-
-// HistoryPruningCutoff returns the configured history pruning point.
-// Blocks before this might not be available in the database.
-func (bc *BlockChain) HistoryPruningCutoff() uint64 {
-	return bc.cacheConfig.HistoryPruningCutoff
-}

core/blockchain_reader.go

@@ -458,3 +458,13 @@ func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscript
 func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription {
 	return bc.scope.Track(bc.blockProcFeed.Subscribe(ch))
 }
+
+// HistoryPruningCutoff returns the configured history pruning point.
+// Blocks before this might not be available in the database.
+func (bc *BlockChain) HistoryPruningCutoff() (uint64, common.Hash) {
+	pt := bc.historyPrunePoint.Load()
+	if pt == nil {
+		return 0, bc.genesisBlock.Hash()
+	}
+	return pt.BlockNumber, pt.BlockHash
+}

core/history/historymode.go

@@ -0,0 +1,93 @@
+// Copyright 2025 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package history
+
+import (
+	"fmt"
+
+	"github.com/CortexFoundation/CortexTheseus/common"
+	"github.com/CortexFoundation/CortexTheseus/params"
+)
+
+// HistoryMode configures history pruning.
+type HistoryMode uint32
+
+const (
+	// KeepAll (default) means that all chain history down to genesis block will be kept.
+	KeepAll HistoryMode = iota
+
+	// KeepPostMerge sets the history pruning point to the merge activation block.
+	KeepPostMerge
+)
+
+func (m HistoryMode) IsValid() bool {
+	return m <= KeepPostMerge
+}
+
+func (m HistoryMode) String() string {
+	switch m {
+	case KeepAll:
+		return "all"
+	case KeepPostMerge:
+		return "postmerge"
+	default:
+		return fmt.Sprintf("invalid HistoryMode(%d)", m)
+	}
+}
+
+// MarshalText implements encoding.TextMarshaler.
+func (m HistoryMode) MarshalText() ([]byte, error) {
+	if m.IsValid() {
+		return []byte(m.String()), nil
+	}
+	return nil, fmt.Errorf("unknown history mode %d", m)
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (m *HistoryMode) UnmarshalText(text []byte) error {
+	switch string(text) {
+	case "all":
+		*m = KeepAll
+	case "postmerge":
+		*m = KeepPostMerge
+	default:
+		return fmt.Errorf(`unknown sync mode %q, want "all" or "postmerge"`, text)
+	}
+	return nil
+}
+
+type PrunePoint struct {
+	BlockNumber uint64
+	BlockHash   common.Hash
+}
+
+// PrunePoints the pre-defined history pruning cutoff blocks for known networks.
+// They point to the first post-merge block. Any pruning should truncate *up to* but excluding
+// given block.
+var PrunePoints = map[common.Hash]*PrunePoint{
+	// mainnet
+	params.MainnetGenesisHash: {
+		BlockNumber: 15537393,
+		BlockHash:   common.HexToHash("0x55b11b918355b1ef9c5db810302ebad0bf2544255b530cdce90674d5887bb286"),
+	},
+}
+
+// PrunedHistoryError is returned by APIs when the requested history is pruned.
+type PrunedHistoryError struct{}
+
+func (e *PrunedHistoryError) Error() string  { return "pruned history unavailable" }
+func (e *PrunedHistoryError) ErrorCode() int { return 4444 }

core/txindexer.go

@@ -58,9 +58,10 @@ type txIndexer struct {
 
 // newTxIndexer initializes the transaction indexer.
 func newTxIndexer(limit uint64, chain *BlockChain) *txIndexer {
+	cutoff, _ := chain.HistoryPruningCutoff()
 	indexer := &txIndexer{
 		limit:    limit,
-		cutoff:   chain.HistoryPruningCutoff(),
+		cutoff:   cutoff,
 		db:       chain.db,
 		progress: make(chan chan TxIndexProgress),
 		term:     make(chan chan struct{}),

ctxc/backend.go

@@ -217,6 +217,7 @@ func New(stack *node.Node, config *Config) (*Cortex, error) {
 			//StateHistory:         config.StateHistory,
 			//StateScheme:          scheme,
 			//HistoryPruningCutoff: historyPruningCutoff,
+			ChainHistoryMode: config.HistoryMode,
 		}
 	)
 	ctxc.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, ctxc.chainConfig, ctxc.engine, vmConfig, ctxc.shouldPreserve, &config.TxLookupLimit)
@@ -233,7 +234,7 @@ func New(stack *node.Node, config *Config) (*Cortex, error) {
 	}
 
 	chainView := ctxc.newChainView(ctxc.blockchain.CurrentBlock().Header())
-	historyCutoff := ctxc.blockchain.HistoryPruningCutoff()
+	historyCutoff, _ := ctxc.blockchain.HistoryPruningCutoff()
 	var finalBlock uint64
 	if fb := ctxc.blockchain.CurrentFinalizedBlock(); fb != nil {
 		finalBlock = fb.Header().Number.Uint64()
@@ -667,7 +668,7 @@ func (s *Cortex) updateFilterMapsHeads() {
 		if head == nil || newHead.Hash() != head.Hash() {
 			head = newHead
 			chainView := s.newChainView(head)
-			historyCutoff := s.blockchain.HistoryPruningCutoff()
+			historyCutoff, _ := s.blockchain.HistoryPruningCutoff()
 			var finalBlock uint64
 			if fb := s.blockchain.CurrentFinalizedBlock(); fb != nil {
 				finalBlock = fb.Header().Number.Uint64()

ctxc/config.go

@@ -25,6 +25,7 @@ import (
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/consensus/cuckoo"
 	"github.com/CortexFoundation/CortexTheseus/core"
+	"github.com/CortexFoundation/CortexTheseus/core/history"
 	"github.com/CortexFoundation/CortexTheseus/core/txpool"
 	"github.com/CortexFoundation/CortexTheseus/ctxc/downloader"
 	"github.com/CortexFoundation/CortexTheseus/ctxc/gasprice"
@@ -48,6 +49,7 @@ var DefaultLightGPOConfig = gasprice.Config{
 
 // DefaultConfig contains default settings for use on the Cortex main net.
 var DefaultConfig = Config{
+	HistoryMode:             history.KeepAll,
 	SyncMode:                downloader.FullSync,
 	Cuckoo:                  cuckoo.Config{},
 	NetworkId:               0,
@@ -87,8 +89,10 @@ type Config struct {
 	Genesis *core.Genesis `toml:",omitempty"`
 
 	// Protocol options
-	NetworkId     uint64 // Network ID to use for selecting peers to connect to
-	SyncMode      downloader.SyncMode
+	NetworkId uint64 // Network ID to use for selecting peers to connect to
+	SyncMode  downloader.SyncMode
+	// HistoryMode configures chain history retention.
+	HistoryMode   history.HistoryMode
 	DiscoveryURLs []string
 	NoPruning     bool
 	NoPrefetch    bool   // Whether to disable prefetching and only load state on demand

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0
 	github.com/CortexFoundation/inference v1.0.2-0.20230307032835-9197d586a4e8
 	github.com/CortexFoundation/statik v0.0.0-20210315012922-8bb8a7b5dc66
-	github.com/CortexFoundation/torrentfs v1.0.69-0.20250415112856-b1b452a24746
+	github.com/CortexFoundation/torrentfs v1.0.69-0.20250415134051-0b782fe8b66d
 	github.com/VictoriaMetrics/fastcache v1.12.2
 	github.com/arsham/figurine v1.3.0
 	github.com/aws/aws-sdk-go-v2 v1.36.3