From a51c7b3b62270fadb12eb98bbe7b2465fd697bf9 Mon Sep 17 00:00:00 2001
From: Harry Ngo <17699212+huyngopt1994@users.noreply.github.com>
Date: Fri, 4 Oct 2024 17:21:53 +0700
Subject: [PATCH] all: remove trie cache journal (#595)

---
 cmd/devp2p/internal/ethtest/suite_test.go |  2 --
 cmd/ronin/config.go                       |  4 +++
 cmd/ronin/main.go                         |  4 +--
 cmd/ronin/snapshot.go                     |  6 ++--
 cmd/utils/flags.go                        | 18 -----------
 cmd/utils/flags_legacy.go                 | 14 ++++++++
 core/blockchain.go                        | 22 -------------
 core/state/pruner/pruner.go               | 39 ++++++++---------------
 eth/backend.go                            |  4 +--
 eth/ethconfig/config.go                   | 20 ++++++------
 eth/ethconfig/gen_config.go               | 12 -------
 graphql/graphql_test.go                   | 12 +++----
 trie/database.go                          | 29 +----------------
 13 files changed, 52 insertions(+), 134 deletions(-)

diff --git a/cmd/devp2p/internal/ethtest/suite_test.go b/cmd/devp2p/internal/ethtest/suite_test.go
index 50380b989c..55e386c4aa 100644
--- a/cmd/devp2p/internal/ethtest/suite_test.go
+++ b/cmd/devp2p/internal/ethtest/suite_test.go
@@ -91,8 +91,6 @@ func setupGeth(stack *node.Node) error {
 		Genesis:                 &chain.genesis,
 		NetworkId:               chain.genesis.Config.ChainID.Uint64(), // 19763
 		DatabaseCache:           10,
-		TrieCleanCache:          10,
-		TrieCleanCacheJournal:   "",
 		TrieCleanCacheRejournal: 60 * time.Minute,
 		TrieDirtyCache:          16,
 		TrieTimeout:             60 * time.Minute,
diff --git a/cmd/ronin/config.go b/cmd/ronin/config.go
index cae2e3bc30..d3bf084fbb 100644
--- a/cmd/ronin/config.go
+++ b/cmd/ronin/config.go
@@ -287,6 +287,10 @@ func deprecated(field string) bool {
 		return true
 	case "ethconfig.Config.EWASMInterpreter":
 		return true
+	case "ethconfig.Config.TrieCleanCacheJournal":
+		return true
+	case "ethconfig.Config.TrieCleanCacheRejournal":
+		return true
 	default:
 		return false
 	}
diff --git a/cmd/ronin/main.go b/cmd/ronin/main.go
index 5144bc14a9..3e94098ab3 100644
--- a/cmd/ronin/main.go
+++ b/cmd/ronin/main.go
@@ -118,8 +118,8 @@ var (
 		utils.CacheFlag,
 		utils.CacheDatabaseFlag,
 		utils.CacheTrieFlag,
-		utils.CacheTrieJournalFlag,
-		utils.CacheTrieRejournalFlag,
+		utils.CacheTrieJournalFlag,   // deprecated
+		utils.CacheTrieRejournalFlag, // deprecated
 		utils.CacheGCFlag,
 		utils.CacheSnapshotFlag,
 		utils.CacheNoPrefetchFlag,
diff --git a/cmd/ronin/snapshot.go b/cmd/ronin/snapshot.go
index ce9b343b90..b61f32969f 100644
--- a/cmd/ronin/snapshot.go
+++ b/cmd/ronin/snapshot.go
@@ -66,7 +66,6 @@ var (
 					utils.SepoliaFlag,
 					utils.RinkebyFlag,
 					utils.GoerliFlag,
-					utils.CacheTrieJournalFlag,
 					utils.BloomFilterSizeFlag,
 				},
 				Description: `
@@ -187,11 +186,12 @@ block is used.
 )
 
 func pruneState(ctx *cli.Context) error {
-	stack, config := makeConfigNode(ctx)
+	stack, _ := makeConfigNode(ctx)
 	defer stack.Close()
 
 	chaindb := utils.MakeChainDatabase(ctx, stack, false)
-	pruner, err := pruner.NewPruner(chaindb, stack.ResolvePath(""), stack.ResolvePath(config.Eth.TrieCleanCacheJournal), ctx.Uint64(utils.BloomFilterSizeFlag.Name))
+	pruner, err := pruner.NewPruner(chaindb, stack.ResolvePath(""),
+		ctx.Uint64(utils.BloomFilterSizeFlag.Name))
 	if err != nil {
 		log.Error("Failed to open snapshot tree", "err", err)
 		return err
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 976c8191ce..806384adce 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -479,18 +479,6 @@ var (
 		Value:    15,
 		Category: flags.PerfCategory,
 	}
-	CacheTrieJournalFlag = &cli.StringFlag{
-		Name:     "cache.trie.journal",
-		Usage:    "Disk journal directory for trie cache to survive node restarts",
-		Value:    ethconfig.Defaults.TrieCleanCacheJournal,
-		Category: flags.PerfCategory,
-	}
-	CacheTrieRejournalFlag = &cli.DurationFlag{
-		Name:     "cache.trie.rejournal",
-		Usage:    "Time interval to regenerate the trie cache journal",
-		Value:    ethconfig.Defaults.TrieCleanCacheRejournal,
-		Category: flags.PerfCategory,
-	}
 	CacheGCFlag = &cli.IntFlag{
 		Name:     "cache.gc",
 		Usage:    "Percentage of cache memory allowance to use for trie pruning (default = 25% full mode, 0% archive mode)",
@@ -1922,12 +1910,6 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	if ctx.IsSet(CacheFlag.Name) || ctx.IsSet(CacheTrieFlag.Name) {
 		cfg.TrieCleanCache = ctx.Int(CacheFlag.Name) * ctx.Int(CacheTrieFlag.Name) / 100
 	}
-	if ctx.IsSet(CacheTrieJournalFlag.Name) {
-		cfg.TrieCleanCacheJournal = ctx.String(CacheTrieJournalFlag.Name)
-	}
-	if ctx.IsSet(CacheTrieRejournalFlag.Name) {
-		cfg.TrieCleanCacheRejournal = ctx.Duration(CacheTrieRejournalFlag.Name)
-	}
 	if ctx.IsSet(CacheFlag.Name) || ctx.IsSet(CacheGCFlag.Name) {
 		cfg.TrieDirtyCache = ctx.Int(CacheFlag.Name) * ctx.Int(CacheGCFlag.Name) / 100
 	}
diff --git a/cmd/utils/flags_legacy.go b/cmd/utils/flags_legacy.go
index cafa07892d..63b6d64879 100644
--- a/cmd/utils/flags_legacy.go
+++ b/cmd/utils/flags_legacy.go
@@ -20,6 +20,7 @@ import (
 	"fmt"
 
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
+	"github.com/ethereum/go-ethereum/internal/flags"
 	"github.com/urfave/cli/v2"
 )
 
@@ -35,6 +36,8 @@ var ShowDeprecated = &cli.Command{
 var DeprecatedFlags = []cli.Flag{
 	LegacyMinerGasTargetFlag,
 	NoUSBFlag,
+	CacheTrieJournalFlag,
+	CacheTrieRejournalFlag,
 }
 
 var (
@@ -49,6 +52,17 @@ var (
 		Usage: "Target gas floor for mined blocks (deprecated)",
 		Value: ethconfig.Defaults.Miner.GasFloor,
 	}
+	// (Deprecated Oct 2024, shown in aliased flags section)
+	CacheTrieJournalFlag = &cli.StringFlag{
+		Name:     "cache.trie.journal",
+		Usage:    "Disk journal directory for trie cache to survive node restarts",
+		Category: flags.PerfCategory,
+	}
+	CacheTrieRejournalFlag = &cli.DurationFlag{
+		Name:     "cache.trie.rejournal",
+		Usage:    "Time interval to regenerate the trie cache journal",
+		Category: flags.PerfCategory,
+	}
 )
 
 // showDeprecated displays deprecated flags that will be soon removed from the codebase.
diff --git a/core/blockchain.go b/core/blockchain.go
index 6e50c8da56..7b7780f41c 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -132,8 +132,6 @@ const (
 // that's resident in a blockchain.
 type CacheConfig struct {
 	TrieCleanLimit      int           // Memory allowance (MB) to use for caching trie nodes in memory
-	TrieCleanJournal    string        // Disk journal for saving clean cache entries.
-	TrieCleanRejournal  time.Duration // Time interval to dump clean cache to disk periodically
 	TrieCleanNoPrefetch bool          // Whether to disable heuristic state prefetching for followup blocks
 	TrieDirtyLimit      int           // Memory limit (MB) at which to start flushing dirty trie nodes to disk
 	TrieDirtyDisabled   bool          // Whether to disable trie write caching and GC altogether (archive node)
@@ -266,7 +264,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 		db,
 		&trie.Config{
 			Cache:     cacheConfig.TrieCleanLimit,
-			Journal:   cacheConfig.TrieCleanJournal,
 			Preimages: cacheConfig.Preimages,
 		})
 	// Setup the genesis block, commit the provided genesis specification
@@ -286,7 +283,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 		triegc:      prque.New(nil),
 		stateCache: state.NewDatabaseWithConfig(db, &trie.Config{
 			Cache:     cacheConfig.TrieCleanLimit,
-			Journal:   cacheConfig.TrieCleanJournal,
 			Preimages: cacheConfig.Preimages,
 		}),
 		quit:                      make(chan struct{}),
@@ -447,19 +443,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 		go bc.maintainTxIndex(txIndexBlock)
 	}
 
-	// If periodic cache journal is required, spin it up.
-	if bc.cacheConfig.TrieCleanRejournal > 0 {
-		if bc.cacheConfig.TrieCleanRejournal < time.Minute {
-			log.Warn("Sanitizing invalid trie cache journal time", "provided", bc.cacheConfig.TrieCleanRejournal, "updated", time.Minute)
-			bc.cacheConfig.TrieCleanRejournal = time.Minute
-		}
-		bc.wg.Add(1)
-		go func() {
-			defer bc.wg.Done()
-			bc.triedb.SaveCachePeriodically(bc.cacheConfig.TrieCleanJournal, bc.cacheConfig.TrieCleanRejournal, bc.quit)
-		}()
-	}
-
 	// load the latest dirty accounts stored from last stop to cache
 	bc.loadLatestDirtyAccounts()
 	// Rewind the chain in case of an incompatible config upgrade.
@@ -1022,11 +1005,6 @@ func (bc *BlockChain) Stop() {
 			log.Error("Dangling trie nodes after full cleanup")
 		}
 	}
-	// Ensure all live cached entries be saved into disk, so that we can skip
-	// cache warmup when node restarts.
-	if bc.cacheConfig.TrieCleanJournal != "" {
-		bc.triedb.SaveCache(bc.cacheConfig.TrieCleanJournal)
-	}
 	log.Info("Blockchain stopped")
 }
 
diff --git a/core/state/pruner/pruner.go b/core/state/pruner/pruner.go
index c46432ee68..f46eb66990 100644
--- a/core/state/pruner/pruner.go
+++ b/core/state/pruner/pruner.go
@@ -75,16 +75,15 @@ var (
 // periodically in order to release the disk usage and improve the
 // disk read performance to some extent.
 type Pruner struct {
-	db            ethdb.Database
-	stateBloom    *stateBloom
-	datadir       string
-	trieCachePath string
-	headHeader    *types.Header
-	snaptree      *snapshot.Tree
+	db         ethdb.Database
+	stateBloom *stateBloom
+	datadir    string
+	headHeader *types.Header
+	snaptree   *snapshot.Tree
 }
 
 // NewPruner creates the pruner instance.
-func NewPruner(db ethdb.Database, datadir, trieCachePath string, bloomSize uint64) (*Pruner, error) {
+func NewPruner(db ethdb.Database, datadir string, bloomSize uint64) (*Pruner, error) {
 	headBlock := rawdb.ReadHeadBlock(db)
 	if headBlock == nil {
 		return nil, errors.New("Failed to load head block")
@@ -103,12 +102,11 @@ func NewPruner(db ethdb.Database, datadir, trieCachePath string, bloomSize uint6
 		return nil, err
 	}
 	return &Pruner{
-		db:            db,
-		stateBloom:    stateBloom,
-		datadir:       datadir,
-		trieCachePath: trieCachePath,
-		headHeader:    headBlock.Header(),
-		snaptree:      snaptree,
+		db:         db,
+		stateBloom: stateBloom,
+		datadir:    datadir,
+		headHeader: headBlock.Header(),
+		snaptree:   snaptree,
 	}, nil
 }
 
@@ -241,7 +239,7 @@ func (p *Pruner) Prune(root common.Hash) error {
 		return err
 	}
 	if stateBloomRoot != (common.Hash{}) {
-		return RecoverPruning(p.datadir, p.db, p.trieCachePath)
+		return RecoverPruning(p.datadir, p.db)
 	}
 	// If the target state root is not specified, use the HEAD-127 as the
 	// target. The reason for picking it is:
@@ -299,11 +297,6 @@ func (p *Pruner) Prune(root common.Hash) error {
 			log.Info("Selecting user-specified state as the pruning target", "root", root)
 		}
 	}
-	// Before start the pruning, delete the clean trie cache first.
-	// It's necessary otherwise in the next restart we will hit the
-	// deleted state root in the "clean cache" so that the incomplete
-	// state is picked for usage.
-	deleteCleanTrieCache(p.trieCachePath)
 
 	// All the state roots of the middle layer should be forcibly pruned,
 	// otherwise the dangling state will be left.
@@ -342,7 +335,7 @@ func (p *Pruner) Prune(root common.Hash) error {
 // pruning can be resumed. What's more if the bloom filter is constructed, the
 // pruning **has to be resumed**. Otherwise a lot of dangling nodes may be left
 // in the disk.
-func RecoverPruning(datadir string, db ethdb.Database, trieCachePath string) error {
+func RecoverPruning(datadir string, db ethdb.Database) error {
 	stateBloomPath, stateBloomRoot, err := findBloomFilter(datadir)
 	if err != nil {
 		return err
@@ -372,12 +365,6 @@ func RecoverPruning(datadir string, db ethdb.Database, trieCachePath string) err
 	}
 	log.Info("Loaded state bloom filter", "path", stateBloomPath)
 
-	// Before start the pruning, delete the clean trie cache first.
-	// It's necessary otherwise in the next restart we will hit the
-	// deleted state root in the "clean cache" so that the incomplete
-	// state is picked for usage.
-	deleteCleanTrieCache(trieCachePath)
-
 	// All the state roots of the middle layers should be forcibly pruned,
 	// otherwise the dangling state will be left.
 	var (
diff --git a/eth/backend.go b/eth/backend.go
index 32e3f17331..3850b94458 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -141,7 +141,7 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 		return nil, err
 	}
 
-	if err := pruner.RecoverPruning(stack.ResolvePath(""), chainDb, stack.ResolvePath(config.TrieCleanCacheJournal)); err != nil {
+	if err := pruner.RecoverPruning(stack.ResolvePath(""), chainDb); err != nil {
 		log.Error("Failed to recover state", "error", err)
 	}
 	eth := &Ethereum{
@@ -192,8 +192,6 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 		}
 		cacheConfig = &core.CacheConfig{
 			TrieCleanLimit:      config.TrieCleanCache,
-			TrieCleanJournal:    stack.ResolvePath(config.TrieCleanCacheJournal),
-			TrieCleanRejournal:  config.TrieCleanCacheRejournal,
 			TrieCleanNoPrefetch: config.NoPrefetch,
 			TrieDirtyLimit:      config.TrieDirtyCache,
 			TrieDirtyDisabled:   config.NoPruning,
diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go
index 5e64069127..ac257d8a68 100644
--- a/eth/ethconfig/config.go
+++ b/eth/ethconfig/config.go
@@ -76,17 +76,15 @@ var Defaults = Config{
 		DatasetsOnDisk:   2,
 		DatasetsLockMmap: false,
 	},
-	NetworkId:               1,
-	TxLookupLimit:           2350000,
-	LightPeers:              100,
-	UltraLightFraction:      75,
-	DatabaseCache:           512,
-	TrieCleanCache:          154,
-	TrieCleanCacheJournal:   "triecache",
-	TrieCleanCacheRejournal: 60 * time.Minute,
-	TrieDirtyCache:          256,
-	TrieTimeout:             60 * time.Minute,
-	SnapshotCache:           102,
+	NetworkId:          1,
+	TxLookupLimit:      2350000,
+	LightPeers:         100,
+	UltraLightFraction: 75,
+	DatabaseCache:      512,
+	TrieCleanCache:     154,
+	TrieDirtyCache:     256,
+	TrieTimeout:        60 * time.Minute,
+	SnapshotCache:      102,
 	Miner: miner.Config{
 		GasCeil:              8000000,
 		GasPrice:             big.NewInt(params.GWei),
diff --git a/eth/ethconfig/gen_config.go b/eth/ethconfig/gen_config.go
index 6e1302bc88..0af7eeced0 100644
--- a/eth/ethconfig/gen_config.go
+++ b/eth/ethconfig/gen_config.go
@@ -43,8 +43,6 @@ func (c Config) MarshalTOML() (interface{}, error) {
 		DatabaseCache           int
 		DatabaseFreezer         string
 		TrieCleanCache          int
-		TrieCleanCacheJournal   string        `toml:",omitempty"`
-		TrieCleanCacheRejournal time.Duration `toml:",omitempty"`
 		TrieDirtyCache          int
 		TrieTimeout             time.Duration
 		SnapshotCache           int
@@ -87,8 +85,6 @@ func (c Config) MarshalTOML() (interface{}, error) {
 	enc.DatabaseCache = c.DatabaseCache
 	enc.DatabaseFreezer = c.DatabaseFreezer
 	enc.TrieCleanCache = c.TrieCleanCache
-	enc.TrieCleanCacheJournal = c.TrieCleanCacheJournal
-	enc.TrieCleanCacheRejournal = c.TrieCleanCacheRejournal
 	enc.TrieDirtyCache = c.TrieDirtyCache
 	enc.TrieTimeout = c.TrieTimeout
 	enc.SnapshotCache = c.SnapshotCache
@@ -135,8 +131,6 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 		DatabaseCache           *int
 		DatabaseFreezer         *string
 		TrieCleanCache          *int
-		TrieCleanCacheJournal   *string        `toml:",omitempty"`
-		TrieCleanCacheRejournal *time.Duration `toml:",omitempty"`
 		TrieDirtyCache          *int
 		TrieTimeout             *time.Duration
 		SnapshotCache           *int
@@ -230,12 +224,6 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.TrieCleanCache != nil {
 		c.TrieCleanCache = *dec.TrieCleanCache
 	}
-	if dec.TrieCleanCacheJournal != nil {
-		c.TrieCleanCacheJournal = *dec.TrieCleanCacheJournal
-	}
-	if dec.TrieCleanCacheRejournal != nil {
-		c.TrieCleanCacheRejournal = *dec.TrieCleanCacheRejournal
-	}
 	if dec.TrieDirtyCache != nil {
 		c.TrieDirtyCache = *dec.TrieDirtyCache
 	}
diff --git a/graphql/graphql_test.go b/graphql/graphql_test.go
index 895e797535..767a37ae6f 100644
--- a/graphql/graphql_test.go
+++ b/graphql/graphql_test.go
@@ -245,13 +245,11 @@ func createGQLService(t *testing.T, stack *node.Node) {
 		Ethash: ethash.Config{
 			PowMode: ethash.ModeFake,
 		},
-		NetworkId:               1337,
-		TrieCleanCache:          5,
-		TrieCleanCacheJournal:   "triecache",
-		TrieCleanCacheRejournal: 60 * time.Minute,
-		TrieDirtyCache:          5,
-		TrieTimeout:             60 * time.Minute,
-		SnapshotCache:           5,
+		NetworkId:      1337,
+		TrieCleanCache: 5,
+		TrieDirtyCache: 5,
+		TrieTimeout:    60 * time.Minute,
+		SnapshotCache:  5,
 	}
 	ethBackend, err := eth.New(stack, ethConf)
 	if err != nil {
diff --git a/trie/database.go b/trie/database.go
index 96d201aabe..c970383ad2 100644
--- a/trie/database.go
+++ b/trie/database.go
@@ -18,7 +18,6 @@ package trie
 
 import (
 	"errors"
-	"runtime"
 	"time"
 
 	"github.com/VictoriaMetrics/fastcache"
@@ -91,11 +90,7 @@ type Database struct {
 func prepare(diskdb ethdb.Database, config *Config) *Database {
 	var cleans *fastcache.Cache
 	if config != nil && config.Cache > 0 {
-		if config.Journal == "" {
-			cleans = fastcache.New(config.Cache * 1024 * 1024)
-		} else {
-			cleans = fastcache.LoadFromFileOrNew(config.Journal, config.Cache*1024*1024)
-		}
+		cleans = fastcache.New(config.Cache * 1024 * 1024)
 	}
 	var preimages *preimageStore
 	if config != nil && config.Preimages {
@@ -219,28 +214,6 @@ func (db *Database) saveCache(dir string, threads int) error {
 	return nil
 }
 
-// SaveCache atomically saves fast cache data to the given dir using all
-// available CPU cores.
-func (db *Database) SaveCache(dir string) error {
-	return db.saveCache(dir, runtime.GOMAXPROCS(0))
-}
-
-// SaveCachePeriodically atomically saves fast cache data to the given dir with
-// the specified interval. All dump operation will only use a single CPU core.
-func (db *Database) SaveCachePeriodically(dir string, interval time.Duration, stopCh <-chan struct{}) {
-	ticker := time.NewTicker(interval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ticker.C:
-			db.saveCache(dir, 1)
-		case <-stopCh:
-			return
-		}
-	}
-}
-
 // Cap iteratively flushes old but still referenced trie nodes until the total
 // memory usage goes below the given threshold. The held pre-images accumulated
 // up to this point will be flushed in case the size exceeds the threshold.