all: introduce state reader interface

cmd/evm/internal/t8ntool/execution.go

@@ -370,7 +370,7 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 	}
 	// Re-create statedb instance with new root upon the updated database
 	// for accessing latest states.
-	statedb, err = state.New(root, statedb.Database(), nil)
+	statedb, err = state.New(root, statedb.Database())
 	if err != nil {
 		return nil, nil, nil, NewError(ErrorEVM, fmt.Errorf("could not reopen state: %v", err))
 	}
@@ -379,8 +379,9 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 }
 
 func MakePreState(db ethdb.Database, accounts types.GenesisAlloc) *state.StateDB {
-	sdb := state.NewDatabaseWithConfig(db, &triedb.Config{Preimages: true})
-	statedb, _ := state.New(types.EmptyRootHash, sdb, nil)
+	tdb := triedb.NewDatabase(db, &triedb.Config{Preimages: true})
+	sdb := state.NewDatabase(db, tdb, nil)
+	statedb, _ := state.New(types.EmptyRootHash, sdb)
 	for addr, a := range accounts {
 		statedb.SetCode(addr, a.Code)
 		statedb.SetNonce(addr, a.Nonce)
@@ -391,7 +392,7 @@ func MakePreState(db ethdb.Database, accounts types.GenesisAlloc) *state.StateDB
 	}
 	// Commit and re-open to start with a clean state.
 	root, _ := statedb.Commit(0, false)
-	statedb, _ = state.New(root, sdb, nil)
+	statedb, _ = state.New(root, sdb)
 	return statedb
 }
 

cmd/evm/runner.go

@@ -155,8 +155,8 @@ func runCmd(ctx *cli.Context) error {
 	})
 	defer triedb.Close()
 	genesis := genesisConfig.MustCommit(db, triedb)
-	sdb := state.NewDatabaseWithNodeDB(db, triedb)
-	statedb, _ = state.New(genesis.Root(), sdb, nil)
+	sdb := state.NewDatabase(db, triedb, nil)
+	statedb, _ = state.New(genesis.Root(), sdb)
 	chainConfig = genesisConfig.Config
 
 	if ctx.String(SenderFlag.Name) != "" {
@@ -277,7 +277,7 @@ func runCmd(ctx *cli.Context) error {
 			fmt.Printf("Failed to commit changes %v\n", err)
 			return err
 		}
-		dumpdb, err := state.New(root, sdb, nil)
+		dumpdb, err := state.New(root, sdb)
 		if err != nil {
 			fmt.Printf("Failed to open statedb %v\n", err)
 			return err

cmd/geth/chaincmd.go

@@ -587,7 +587,7 @@ func dump(ctx *cli.Context) error {
 	triedb := utils.MakeTrieDatabase(ctx, db, true, true, false) // always enable preimage lookup
 	defer triedb.Close()
 
-	state, err := state.New(root, state.NewDatabaseWithNodeDB(db, triedb), nil)
+	state, err := state.New(root, state.NewDatabase(db, triedb, nil))
 	if err != nil {
 		return err
 	}

core/blockchain.go

@@ -216,7 +216,7 @@ type BlockChain struct {
 	lastWrite     uint64                           // Last block when the state was flushed
 	flushInterval atomic.Int64                     // Time interval (processing time) after which to flush a state
 	triedb        *triedb.Database                 // The database handler for maintaining trie nodes.
-	stateCache    state.Database                   // State database to reuse between imports (contains state cache)
+	stateDb       *state.CachingDB                 // State database to reuse between imports (contains state cache)
 	txIndexer     *txIndexer                       // Transaction indexer, might be nil if not enabled
 
 	hc            *HeaderChain
@@ -304,7 +304,7 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 	}
 	bc.flushInterval.Store(int64(cacheConfig.TrieTimeLimit))
 	bc.forker = NewForkChoice(bc, shouldPreserve)
-	bc.stateCache = state.NewDatabaseWithNodeDB(bc.db, bc.triedb)
+	bc.stateDb = state.NewDatabase(bc.db, bc.triedb, nil)
 	bc.validator = NewBlockValidator(chainConfig, bc, engine)
 	bc.prefetcher = newStatePrefetcher(chainConfig, bc, engine)
 	bc.processor = NewStateProcessor(chainConfig, bc, engine)
@@ -447,7 +447,13 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
 			AsyncBuild: !bc.cacheConfig.SnapshotWait,
 		}
 		bc.snaps, _ = snapshot.New(snapconfig, bc.db, bc.triedb, head.Root)
+
+		// Register the snapshot into statedb. It's an ugly hack as state snapshot
+		// is constructed after stateDb. TODO(rjl493456442) improve the construction
+		// logic.
+		bc.stateDb.SetSnapshot(bc.snaps)
 	}
+
 	// 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)
@@ -1799,7 +1805,7 @@ func (bc *BlockChain) insertChain(chain types.Blocks, setHead bool) (int, error)
 		if parent == nil {
 			parent = bc.GetHeader(block.ParentHash(), block.NumberU64()-1)
 		}
-		statedb, err := state.New(parent.Root, bc.stateCache, bc.snaps)
+		statedb, err := state.New(parent.Root, bc.stateDb)
 		if err != nil {
 			return it.index, err
 		}
@@ -1818,7 +1824,7 @@ func (bc *BlockChain) insertChain(chain types.Blocks, setHead bool) (int, error)
 		var followupInterrupt atomic.Bool
 		if !bc.cacheConfig.TrieCleanNoPrefetch {
 			if followup, err := it.peek(); followup != nil && err == nil {
-				throwaway, _ := state.New(parent.Root, bc.stateCache, bc.snaps)
+				throwaway, _ := state.New(parent.Root, bc.stateDb)
 
 				go func(start time.Time, followup *types.Block, throwaway *state.StateDB) {
 					// Disable tracing for prefetcher executions.

core/blockchain_reader.go

@@ -308,7 +308,7 @@ func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int {
 
 // HasState checks if state trie is fully present in the database or not.
 func (bc *BlockChain) HasState(hash common.Hash) bool {
-	_, err := bc.stateCache.OpenTrie(hash)
+	_, err := bc.stateDb.OpenTrie(hash)
 	return err == nil
 }
 
@@ -341,12 +341,9 @@ func (bc *BlockChain) stateRecoverable(root common.Hash) bool {
 // If the code doesn't exist in the in-memory cache, check the storage with
 // new code scheme.
 func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error) {
-	type codeReader interface {
-		ContractCodeWithPrefix(address common.Address, codeHash common.Hash) ([]byte, error)
-	}
 	// TODO(rjl493456442) The associated account address is also required
 	// in Verkle scheme. Fix it once snap-sync is supported for Verkle.
-	return bc.stateCache.(codeReader).ContractCodeWithPrefix(common.Address{}, hash)
+	return bc.stateDb.ContractCodeWithPrefix(common.Address{}, hash)
 }
 
 // State returns a new mutable state based on the current HEAD block.
@@ -356,7 +353,7 @@ func (bc *BlockChain) State() (*state.StateDB, error) {
 
 // StateAt returns a new mutable state based on a particular point in time.
 func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error) {
-	return state.New(root, bc.stateCache, bc.snaps)
+	return state.New(root, bc.stateDb)
 }
 
 // Config retrieves the chain's fork configuration.
@@ -382,7 +379,7 @@ func (bc *BlockChain) Processor() Processor {
 
 // StateCache returns the caching database underpinning the blockchain instance.
 func (bc *BlockChain) StateCache() state.Database {
-	return bc.stateCache
+	return bc.stateDb
 }
 
 // GasLimit returns the gas limit of the current HEAD block.

core/blockchain_sethead_test.go

@@ -21,6 +21,7 @@ package core
 
 import (
 	"fmt"
+	"github.com/ethereum/go-ethereum/core/state"
 	"math/big"
 	"path/filepath"
 	"strings"
@@ -30,7 +31,6 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus/ethash"
 	"github.com/ethereum/go-ethereum/core/rawdb"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/params"
@@ -2040,7 +2040,7 @@ func testSetHeadWithScheme(t *testing.T, tt *rewindTest, snapshots bool, scheme
 		dbconfig.HashDB = hashdb.Defaults
 	}
 	chain.triedb = triedb.NewDatabase(chain.db, dbconfig)
-	chain.stateCache = state.NewDatabaseWithNodeDB(chain.db, chain.triedb)
+	chain.stateDb = state.NewDatabase(chain.db, chain.triedb, chain.snaps)
 
 	// Force run a freeze cycle
 	type freezer interface {

core/blockchain_test.go

@@ -159,7 +159,7 @@ func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error {
 			}
 			return err
 		}
-		statedb, err := state.New(blockchain.GetBlockByHash(block.ParentHash()).Root(), blockchain.stateCache, nil)
+		statedb, err := state.New(blockchain.GetBlockByHash(block.ParentHash()).Root(), blockchain.stateDb)
 		if err != nil {
 			return err
 		}

core/chain_makers.go

@@ -368,7 +368,7 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, engine conse
 	defer triedb.Close()
 
 	for i := 0; i < n; i++ {
-		statedb, err := state.New(parent.Root(), state.NewDatabaseWithNodeDB(db, triedb), nil)
+		statedb, err := state.New(parent.Root(), state.NewDatabase(db, triedb, nil))
 		if err != nil {
 			panic(err)
 		}
@@ -475,7 +475,7 @@ func GenerateVerkleChain(config *params.ChainConfig, parent *types.Block, engine
 	}
 
 	for i := 0; i < n; i++ {
-		statedb, err := state.New(parent.Root(), state.NewDatabaseWithNodeDB(db, trdb), nil)
+		statedb, err := state.New(parent.Root(), state.NewDatabase(db, trdb, nil))
 		if err != nil {
 			panic(err)
 		}

core/genesis.go

@@ -127,8 +127,8 @@ func hashAlloc(ga *types.GenesisAlloc, isVerkle bool) (common.Hash, error) {
 	}
 	// Create an ephemeral in-memory database for computing hash,
 	// all the derived states will be discarded to not pollute disk.
-	db := state.NewDatabaseWithConfig(rawdb.NewMemoryDatabase(), config)
-	statedb, err := state.New(types.EmptyRootHash, db, nil)
+	db := rawdb.NewMemoryDatabase()
+	statedb, err := state.New(types.EmptyRootHash, state.NewDatabase(db, triedb.NewDatabase(db, config), nil))
 	if err != nil {
 		return common.Hash{}, err
 	}
@@ -149,7 +149,7 @@ func hashAlloc(ga *types.GenesisAlloc, isVerkle bool) (common.Hash, error) {
 // states will be persisted into the given database. Also, the genesis state
 // specification will be flushed as well.
 func flushAlloc(ga *types.GenesisAlloc, db ethdb.Database, triedb *triedb.Database, blockhash common.Hash) error {
-	statedb, err := state.New(types.EmptyRootHash, state.NewDatabaseWithNodeDB(db, triedb), nil)
+	statedb, err := state.New(types.EmptyRootHash, state.NewDatabase(db, triedb, nil))
 	if err != nil {
 		return err
 	}