all: remove remaining uses of untyped golang-lru (#26194)

common/lru/basiclru.go

@@ -34,7 +34,7 @@ type cacheItem[K any, V any] struct {
 
 // NewBasicLRU creates a new LRU cache.
 func NewBasicLRU[K comparable, V any](capacity int) BasicLRU[K, V] {
-	if capacity < 0 {
+	if capacity <= 0 {
 		capacity = 1
 	}
 	c := BasicLRU[K, V]{

consensus/clique/clique.go

@@ -30,6 +30,7 @@ import (
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
+	lru "github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/consensus/misc"
 	"github.com/ethereum/go-ethereum/core/state"
@@ -41,7 +42,6 @@ import (
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/trie"
-	lru "github.com/hashicorp/golang-lru"
 	"golang.org/x/crypto/sha3"
 )
 
@@ -143,11 +143,11 @@ var (
 type SignerFn func(signer accounts.Account, mimeType string, message []byte) ([]byte, error)
 
 // ecrecover extracts the Ethereum account address from a signed header.
-func ecrecover(header *types.Header, sigcache *lru.ARCCache) (common.Address, error) {
+func ecrecover(header *types.Header, sigcache *sigLRU) (common.Address, error) {
 	// If the signature's already cached, return that
 	hash := header.Hash()
 	if address, known := sigcache.Get(hash); known {
-		return address.(common.Address), nil
+		return address, nil
 	}
 	// Retrieve the signature from the header extra-data
 	if len(header.Extra) < extraSeal {
@@ -173,8 +173,8 @@ type Clique struct {
 	config *params.CliqueConfig // Consensus engine configuration parameters
 	db     ethdb.Database       // Database to store and retrieve snapshot checkpoints
 
-	recents    *lru.ARCCache // Snapshots for recent block to speed up reorgs
+	recents    *lru.Cache[common.Hash, *Snapshot] // Snapshots for recent block to speed up reorgs
-	signatures *lru.ARCCache // Signatures of recent blocks to speed up mining
+	signatures *sigLRU                            // Signatures of recent blocks to speed up mining
 
 	proposals map[common.Address]bool // Current list of proposals we are pushing
 
@@ -195,8 +195,8 @@ func New(config *params.CliqueConfig, db ethdb.Database) *Clique {
 		conf.Epoch = epochLength
 	}
 	// Allocate the snapshot caches and create the engine
-	recents, _ := lru.NewARC(inmemorySnapshots)
+	recents := lru.NewCache[common.Hash, *Snapshot](inmemorySnapshots)
-	signatures, _ := lru.NewARC(inmemorySignatures)
+	signatures := lru.NewCache[common.Hash, common.Address](inmemorySignatures)
 
 	return &Clique{
 		config:     &conf,
@@ -375,7 +375,7 @@ func (c *Clique) snapshot(chain consensus.ChainHeaderReader, number uint64, hash
 	for snap == nil {
 		// If an in-memory snapshot was found, use that
 		if s, ok := c.recents.Get(hash); ok {
-			snap = s.(*Snapshot)
+			snap = s
 			break
 		}
 		// If an on-disk checkpoint snapshot can be found, use that

consensus/clique/snapshot.go

@@ -23,12 +23,12 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
-	lru "github.com/hashicorp/golang-lru"
 )
 
 // Vote represents a single vote that an authorized signer made to modify the
@@ -47,10 +47,12 @@ type Tally struct {
 	Votes     int  `json:"votes"`     // Number of votes until now wanting to pass the proposal
 }
 
+type sigLRU = lru.Cache[common.Hash, common.Address]
+
 // Snapshot is the state of the authorization voting at a given point in time.
 type Snapshot struct {
 	config   *params.CliqueConfig // Consensus engine parameters to fine tune behavior
-	sigcache *lru.ARCCache        // Cache of recent block signatures to speed up ecrecover
+	sigcache *sigLRU              // Cache of recent block signatures to speed up ecrecover
 
 	Number  uint64                      `json:"number"`  // Block number where the snapshot was created
 	Hash    common.Hash                 `json:"hash"`    // Block hash where the snapshot was created
@@ -70,7 +72,7 @@ func (s signersAscending) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 // newSnapshot creates a new snapshot with the specified startup parameters. This
 // method does not initialize the set of recent signers, so only ever use if for
 // the genesis block.
-func newSnapshot(config *params.CliqueConfig, sigcache *lru.ARCCache, number uint64, hash common.Hash, signers []common.Address) *Snapshot {
+func newSnapshot(config *params.CliqueConfig, sigcache *sigLRU, number uint64, hash common.Hash, signers []common.Address) *Snapshot {
 	snap := &Snapshot{
 		config:   config,
 		sigcache: sigcache,
@@ -87,7 +89,7 @@ func newSnapshot(config *params.CliqueConfig, sigcache *lru.ARCCache, number uin
 }
 
 // loadSnapshot loads an existing snapshot from the database.
-func loadSnapshot(config *params.CliqueConfig, sigcache *lru.ARCCache, db ethdb.Database, hash common.Hash) (*Snapshot, error) {
+func loadSnapshot(config *params.CliqueConfig, sigcache *sigLRU, db ethdb.Database, hash common.Hash) (*Snapshot, error) {
 	blob, err := db.Get(append(rawdb.CliqueSnapshotPrefix, hash[:]...))
 	if err != nil {
 		return nil, err

consensus/ethash/ethash.go

@@ -34,11 +34,11 @@ import (
 	"unsafe"
 
 	"github.com/edsrzf/mmap-go"
+	lrupkg "github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/hashicorp/golang-lru/simplelru"
 )
 
 var ErrInvalidDumpMagic = errors.New("invalid dump magic")
@@ -165,34 +165,45 @@ func memoryMapAndGenerate(path string, size uint64, lock bool, generator func(bu
 	return memoryMap(path, lock)
 }
 
+type cacheOrDataset interface {
+	*cache | *dataset
+}
+
 // lru tracks caches or datasets by their last use time, keeping at most N of them.
-type lru struct {
+type lru[T cacheOrDataset] struct {
 	what string
-	new  func(epoch uint64) interface{}
+	new  func(epoch uint64) T
 	mu   sync.Mutex
 	// Items are kept in a LRU cache, but there is a special case:
 	// We always keep an item for (highest seen epoch) + 1 as the 'future item'.
-	cache      *simplelru.LRU
+	cache      lrupkg.BasicLRU[uint64, T]
 	future     uint64
-	futureItem interface{}
+	futureItem T
 }
 
 // newlru create a new least-recently-used cache for either the verification caches
 // or the mining datasets.
-func newlru(what string, maxItems int, new func(epoch uint64) interface{}) *lru {
+func newlru[T cacheOrDataset](maxItems int, new func(epoch uint64) T) *lru[T] {
-	if maxItems <= 0 {
+	var what string
-		maxItems = 1
+	switch any(T(nil)).(type) {
+	case *cache:
+		what = "cache"
+	case *dataset:
+		what = "dataset"
+	default:
+		panic("unknown type")
+	}
+	return &lru[T]{
+		what:  what,
+		new:   new,
+		cache: lrupkg.NewBasicLRU[uint64, T](maxItems),
 	}
-	cache, _ := simplelru.NewLRU(maxItems, func(key, value interface{}) {
-		log.Trace("Evicted ethash "+what, "epoch", key)
-	})
-	return &lru{what: what, new: new, cache: cache}
 }
 
 // get retrieves or creates an item for the given epoch. The first return value is always
 // non-nil. The second return value is non-nil if lru thinks that an item will be useful in
 // the near future.
-func (lru *lru) get(epoch uint64) (item, future interface{}) {
+func (lru *lru[T]) get(epoch uint64) (item, future T) {
 	lru.mu.Lock()
 	defer lru.mu.Unlock()
 
@@ -226,9 +237,8 @@ type cache struct {
 	once  sync.Once // Ensures the cache is generated only once
 }
 
-// newCache creates a new ethash verification cache and returns it as a plain Go
+// newCache creates a new ethash verification cache.
-// interface to be usable in an LRU cache.
+func newCache(epoch uint64) *cache {
-func newCache(epoch uint64) interface{} {
 	return &cache{epoch: epoch}
 }
 
@@ -308,7 +318,7 @@ type dataset struct {
 
 // newDataset creates a new ethash mining dataset and returns it as a plain Go
 // interface to be usable in an LRU cache.
-func newDataset(epoch uint64) interface{} {
+func newDataset(epoch uint64) *dataset {
 	return &dataset{epoch: epoch}
 }
 
@@ -439,8 +449,8 @@ type Config struct {
 type Ethash struct {
 	config Config
 
-	caches   *lru // In memory caches to avoid regenerating too often
+	caches   *lru[*cache]   // In memory caches to avoid regenerating too often
-	datasets *lru // In memory datasets to avoid regenerating too often
+	datasets *lru[*dataset] // In memory datasets to avoid regenerating too often
 
 	// Mining related fields
 	rand     *rand.Rand    // Properly seeded random source for nonces
@@ -477,8 +487,8 @@ func New(config Config, notify []string, noverify bool) *Ethash {
 	}
 	ethash := &Ethash{
 		config:   config,
-		caches:   newlru("cache", config.CachesInMem, newCache),
+		caches:   newlru(config.CachesInMem, newCache),
-		datasets: newlru("dataset", config.DatasetsInMem, newDataset),
+		datasets: newlru(config.DatasetsInMem, newDataset),
 		update:   make(chan struct{}),
 		hashrate: metrics.NewMeterForced(),
 	}
@@ -573,15 +583,13 @@ func (ethash *Ethash) StopRemoteSealer() error {
 // stored on disk, and finally generating one if none can be found.
 func (ethash *Ethash) cache(block uint64) *cache {
 	epoch := block / epochLength
-	currentI, futureI := ethash.caches.get(epoch)
+	current, future := ethash.caches.get(epoch)
-	current := currentI.(*cache)
 
 	// Wait for generation finish.
 	current.generate(ethash.config.CacheDir, ethash.config.CachesOnDisk, ethash.config.CachesLockMmap, ethash.config.PowMode == ModeTest)
 
 	// If we need a new future cache, now's a good time to regenerate it.
-	if futureI != nil {
+	if future != nil {
-		future := futureI.(*cache)
 		go future.generate(ethash.config.CacheDir, ethash.config.CachesOnDisk, ethash.config.CachesLockMmap, ethash.config.PowMode == ModeTest)
 	}
 	return current
@@ -596,25 +604,20 @@ func (ethash *Ethash) cache(block uint64) *cache {
 func (ethash *Ethash) dataset(block uint64, async bool) *dataset {
 	// Retrieve the requested ethash dataset
 	epoch := block / epochLength
-	currentI, futureI := ethash.datasets.get(epoch)
+	current, future := ethash.datasets.get(epoch)
-	current := currentI.(*dataset)
 
 	// If async is specified, generate everything in a background thread
 	if async && !current.generated() {
 		go func() {
 			current.generate(ethash.config.DatasetDir, ethash.config.DatasetsOnDisk, ethash.config.DatasetsLockMmap, ethash.config.PowMode == ModeTest)
-
+			if future != nil {
-			if futureI != nil {
-				future := futureI.(*dataset)
 				future.generate(ethash.config.DatasetDir, ethash.config.DatasetsOnDisk, ethash.config.DatasetsLockMmap, ethash.config.PowMode == ModeTest)
 			}
 		}()
 	} else {
 		// Either blocking generation was requested, or already done
 		current.generate(ethash.config.DatasetDir, ethash.config.DatasetsOnDisk, ethash.config.DatasetsLockMmap, ethash.config.PowMode == ModeTest)
-
+		if future != nil {
-		if futureI != nil {
-			future := futureI.(*dataset)
 			go future.generate(ethash.config.DatasetDir, ethash.config.DatasetsOnDisk, ethash.config.DatasetsLockMmap, ethash.config.PowMode == ModeTest)
 		}
 	}

go.mod

@@ -33,7 +33,6 @@ require (
 	github.com/gorilla/websocket v1.4.2
 	github.com/graph-gophers/graphql-go v1.3.0
 	github.com/hashicorp/go-bexpr v0.1.10
-	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d
 	github.com/holiman/big v0.0.0-20221017200358-a027dc42d04e
 	github.com/holiman/bloomfilter/v2 v2.0.3
 	github.com/holiman/uint256 v1.2.0

go.sum

@@ -226,7 +226,6 @@ github.com/hashicorp/go-bexpr v0.1.10 h1:9kuI5PFotCboP3dkDYFr/wi0gg0QVbSNz5oFRpx
 github.com/hashicorp/go-bexpr v0.1.10/go.mod h1:oxlubA2vC/gFVfX1A6JGp7ls7uCDlfJn732ehYYg+g0=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
-github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d h1:dg1dEPuWpEqDnvIw251EVy4zlP8gWbsGj4BsUKCRpYs=
 github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/holiman/big v0.0.0-20221017200358-a027dc42d04e h1:pIYdhNkDh+YENVNi3gto8n9hAmRxKxoar0iE6BLucjw=
 github.com/holiman/big v0.0.0-20221017200358-a027dc42d04e/go.mod h1:j9cQbcqHQujT0oKJ38PylVfqohClLr3CvDC+Qcg+lhU=

les/vflux/server/clientdb.go

@@ -22,13 +22,13 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/common/mclock"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/les/utils"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/rlp"
-	lru "github.com/hashicorp/golang-lru"
 )
 
 const (
@@ -57,7 +57,7 @@ var (
 
 type nodeDB struct {
 	db            ethdb.KeyValueStore
-	cache         *lru.Cache
+	cache         *lru.Cache[string, utils.ExpiredValue]
 	auxbuf        []byte                                              // 37-byte auxiliary buffer for key encoding
 	verbuf        [2]byte                                             // 2-byte auxiliary buffer for db version
 	evictCallBack func(mclock.AbsTime, bool, utils.ExpiredValue) bool // Callback to determine whether the balance can be evicted.
@@ -67,10 +67,9 @@ type nodeDB struct {
 }
 
 func newNodeDB(db ethdb.KeyValueStore, clock mclock.Clock) *nodeDB {
-	cache, _ := lru.New(balanceCacheLimit)
 	ndb := &nodeDB{
 		db:      db,
-		cache:   cache,
+		cache:   lru.NewCache[string, utils.ExpiredValue](balanceCacheLimit),
 		auxbuf:  make([]byte, 37),
 		clock:   clock,
 		closeCh: make(chan struct{}),
@@ -125,8 +124,9 @@ func (db *nodeDB) getOrNewBalance(id []byte, neg bool) utils.ExpiredValue {
 	key := db.key(id, neg)
 	item, exist := db.cache.Get(string(key))
 	if exist {
-		return item.(utils.ExpiredValue)
+		return item
 	}
+
 	var b utils.ExpiredValue
 	enc, err := db.db.Get(key)
 	if err != nil || len(enc) == 0 {

light/lightchain.go

@@ -27,6 +27,7 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/rawdb"
@@ -37,7 +38,6 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
-	lru "github.com/hashicorp/golang-lru"
 )
 
 var (
@@ -61,9 +61,9 @@ type LightChain struct {
 	genesisBlock  *types.Block
 	forker        *core.ForkChoice
 
-	bodyCache    *lru.Cache // Cache for the most recent block bodies
+	bodyCache    *lru.Cache[common.Hash, *types.Body]
-	bodyRLPCache *lru.Cache // Cache for the most recent block bodies in RLP encoded format
+	bodyRLPCache *lru.Cache[common.Hash, rlp.RawValue]
-	blockCache   *lru.Cache // Cache for the most recent entire blocks
+	blockCache   *lru.Cache[common.Hash, *types.Block]
 
 	chainmu sync.RWMutex // protects header inserts
 	quit    chan struct{}
@@ -79,18 +79,14 @@ type LightChain struct {
 // available in the database. It initialises the default Ethereum header
 // validator.
 func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.Engine, checkpoint *params.TrustedCheckpoint) (*LightChain, error) {
-	bodyCache, _ := lru.New(bodyCacheLimit)
-	bodyRLPCache, _ := lru.New(bodyCacheLimit)
-	blockCache, _ := lru.New(blockCacheLimit)
-
 	bc := &LightChain{
 		chainDb:       odr.Database(),
 		indexerConfig: odr.IndexerConfig(),
 		odr:           odr,
 		quit:          make(chan struct{}),
-		bodyCache:     bodyCache,
+		bodyCache:     lru.NewCache[common.Hash, *types.Body](bodyCacheLimit),
-		bodyRLPCache:  bodyRLPCache,
+		bodyRLPCache:  lru.NewCache[common.Hash, rlp.RawValue](bodyCacheLimit),
-		blockCache:    blockCache,
+		blockCache:    lru.NewCache[common.Hash, *types.Block](blockCacheLimit),
 		engine:        engine,
 	}
 	bc.forker = core.NewForkChoice(bc, nil)
@@ -233,8 +229,7 @@ func (lc *LightChain) StateCache() state.Database {
 func (lc *LightChain) GetBody(ctx context.Context, hash common.Hash) (*types.Body, error) {
 	// Short circuit if the body's already in the cache, retrieve otherwise
 	if cached, ok := lc.bodyCache.Get(hash); ok {
-		body := cached.(*types.Body)
+		return cached, nil
-		return body, nil
 	}
 	number := lc.hc.GetBlockNumber(hash)
 	if number == nil {
@@ -254,7 +249,7 @@ func (lc *LightChain) GetBody(ctx context.Context, hash common.Hash) (*types.Bod
 func (lc *LightChain) GetBodyRLP(ctx context.Context, hash common.Hash) (rlp.RawValue, error) {
 	// Short circuit if the body's already in the cache, retrieve otherwise
 	if cached, ok := lc.bodyRLPCache.Get(hash); ok {
-		return cached.(rlp.RawValue), nil
+		return cached, nil
 	}
 	number := lc.hc.GetBlockNumber(hash)
 	if number == nil {
@@ -281,7 +276,7 @@ func (lc *LightChain) HasBlock(hash common.Hash, number uint64) bool {
 func (lc *LightChain) GetBlock(ctx context.Context, hash common.Hash, number uint64) (*types.Block, error) {
 	// Short circuit if the block's already in the cache, retrieve otherwise
 	if block, ok := lc.blockCache.Get(hash); ok {
-		return block.(*types.Block), nil
+		return block, nil
 	}
 	block, err := GetBlock(ctx, lc.odr, hash, number)
 	if err != nil {