Wasmstore

arbos/programs/native.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/log"
@@ -53,6 +54,24 @@ func activateProgram(
 	debug bool,
 	burner burn.Burner,
 ) (*activationInfo, error) {
+	info, asm, module, err := activateProgramInternal(db, program, codehash, wasm, page_limit, version, debug, burner.GasLeft())
+	if err != nil {
+		return nil, err
+	}
+	db.ActivateWasm(info.moduleHash, asm, module)
+	return info, nil
+}
+
+func activateProgramInternal(
+	db vm.StateDB,
+	program common.Address,
+	codehash common.Hash,
+	wasm []byte,
+	page_limit uint16,
+	version uint16,
+	debug bool,
+	gasLeft *uint64,
+) (*activationInfo, []byte, []byte, error) {
 	output := &rustBytes{}
 	asmLen := usize(0)
 	moduleHash := &bytes32{}
@@ -69,7 +88,7 @@ func activateProgram(
 		&codeHash,
 		moduleHash,
 		stylusData,
-		(*u64)(burner.GasLeft()),
+		(*u64)(gasLeft),
 	))
 
 	data, msg, err := status.toResult(output.intoBytes(), debug)
@@ -78,9 +97,9 @@ func activateProgram(
 			log.Warn("activation failed", "err", err, "msg", msg, "program", program)
 		}
 		if errors.Is(err, vm.ErrExecutionReverted) {
-			return nil, fmt.Errorf("%w: %s", ErrProgramActivation, msg)
+			return nil, nil, nil, fmt.Errorf("%w: %s", ErrProgramActivation, msg)
 		}
-		return nil, err
+		return nil, nil, nil, err
 	}
 
 	hash := moduleHash.toHash()
@@ -95,13 +114,57 @@ func activateProgram(
 		asmEstimate:   uint32(stylusData.asm_estimate),
 		footprint:     uint16(stylusData.footprint),
 	}
-	db.ActivateWasm(hash, asm, module)
-	return info, err
+	return info, asm, module, err
+}
+
+func getLocalAsm(statedb vm.StateDB, moduleHash common.Hash, address common.Address, pagelimit uint16, time uint64, debugMode bool, program Program) ([]byte, error) {
+	localAsm, err := statedb.TryGetActivatedAsm(moduleHash)
+	if err == nil && len(localAsm) > 0 {
+		return localAsm, nil
+	}
+
+	codeHash := statedb.GetCodeHash(address)
+
+	wasm, err := getWasm(statedb, address)
+	if err != nil {
+		log.Error("Failed to reactivate program: getWasm", "address", address, "expected moduleHash", moduleHash, "err", err)
+		return nil, fmt.Errorf("failed to reactivate program address: %v err: %w", address, err)
+	}
+
+	unlimitedGas := uint64(0xffffffffffff)
+	// we know program is activated, so it must be in correct version and not use too much memory
+	info, asm, module, err := activateProgramInternal(statedb, address, codeHash, wasm, pagelimit, program.version, debugMode, &unlimitedGas)
+	if err != nil {
+		log.Error("failed to reactivate program", "address", address, "expected moduleHash", moduleHash, "err", err)
+		return nil, fmt.Errorf("failed to reactivate program address: %v err: %w", address, err)
+	}
+
+	if info.moduleHash != moduleHash {
+		log.Error("failed to reactivate program", "address", address, "expected moduleHash", moduleHash, "got", info.moduleHash)
+		return nil, fmt.Errorf("failed to reactivate program. address: %v, expected ModuleHash: %v", address, moduleHash)
+	}
+
+	currentHoursSince := hoursSinceArbitrum(time)
+	if currentHoursSince > program.activatedAt {
+		// stylus program is active on-chain, and was activated in the past
+		// so we store it directly to database
+		batch := statedb.Database().WasmStore().NewBatch()
+		rawdb.WriteActivation(batch, moduleHash, asm, module)
+		if err := batch.Write(); err != nil {
+			log.Error("failed writing re-activation to state", "address", address, "err", err)
+		}
+	} else {
+		// program activated recently, possibly in this eth_call
+		// store it to statedb. It will be stored to database if statedb is commited
+		statedb.ActivateWasm(info.moduleHash, asm, module)
+	}
+	return asm, nil
 }
 
 func callProgram(
 	address common.Address,
 	moduleHash common.Hash,
+	localAsm []byte,
 	scope *vm.ScopeContext,
 	interpreter *vm.EVMInterpreter,
 	tracingInfo *util.TracingInfo,
@@ -111,10 +174,9 @@ func callProgram(
 	memoryModel *MemoryModel,
 ) ([]byte, error) {
 	db := interpreter.Evm().StateDB
-	asm := db.GetActivatedAsm(moduleHash)
 	debug := stylusParams.debugMode
 
-	if len(asm) == 0 {
+	if len(localAsm) == 0 {
 		log.Error("missing asm", "program", address, "module", moduleHash)
 		panic("missing asm")
 	}
@@ -128,7 +190,7 @@ func callProgram(
 
 	output := &rustBytes{}
 	status := userStatus(C.stylus_call(
-		goSlice(asm),
+		goSlice(localAsm),
 		goSlice(calldata),
 		stylusParams.encode(),
 		evmApi.cNative,
@@ -159,11 +221,15 @@ func handleReqImpl(apiId usize, req_type u32, data *rustSlice, costPtr *u64, out
 
 // Caches a program in Rust. We write a record so that we can undo on revert.
 // For gas estimation and eth_call, we ignore permanent updates and rely on Rust's LRU.
-func cacheProgram(db vm.StateDB, module common.Hash, version uint16, debug bool, runMode core.MessageRunMode) {
+func cacheProgram(db vm.StateDB, module common.Hash, program Program, params *StylusParams, debug bool, time uint64, runMode core.MessageRunMode) {
 	if runMode == core.MessageCommitMode {
-		asm := db.GetActivatedAsm(module)
-		state.CacheWasmRust(asm, module, version, debug)
-		db.RecordCacheWasm(state.CacheWasm{ModuleHash: module, Version: version, Debug: debug})
+		// address is only used for logging
+		asm, err := getLocalAsm(db, module, common.Address{}, params.PageLimit, time, debug, program)
+		if err != nil {
+			panic("unable to recreate wasm")
+		}
+		state.CacheWasmRust(asm, module, program.version, debug)
+		db.RecordCacheWasm(state.CacheWasm{ModuleHash: module, Version: program.version, Debug: debug})
 	}
 }
 

arbos/programs/programs.go

@@ -120,14 +120,13 @@ func (p Programs) ActivateProgram(evm *vm.EVM, address common.Address, runMode c
 		return 0, codeHash, common.Hash{}, nil, true, err
 	}
 
-	// replace the cached asm
+	// remove prev asm
 	if cached {
 		oldModuleHash, err := p.moduleHashes.Get(codeHash)
 		if err != nil {
 			return 0, codeHash, common.Hash{}, nil, true, err
 		}
 		evictProgram(statedb, oldModuleHash, currentVersion, debugMode, runMode, expired)
-		cacheProgram(statedb, info.moduleHash, stylusVersion, debugMode, runMode)
 	}
 	if err := p.moduleHashes.Set(codeHash, info.moduleHash); err != nil {
 		return 0, codeHash, common.Hash{}, nil, true, err
@@ -152,6 +151,11 @@ func (p Programs) ActivateProgram(evm *vm.EVM, address common.Address, runMode c
 		activatedAt:   hoursSinceArbitrum(time),
 		cached:        cached,
 	}
+	// replace the cached asm
+	if cached {
+		cacheProgram(statedb, info.moduleHash, programData, params, debugMode, time, runMode)
+	}
+
 	return stylusVersion, codeHash, info.moduleHash, dataFee, false, p.setProgram(codeHash, programData)
 }
 
@@ -205,6 +209,12 @@ func (p Programs) CallProgram(
 	statedb.AddStylusPages(program.footprint)
 	defer statedb.SetStylusPagesOpen(open)
 
+	localAsm, err := getLocalAsm(statedb, moduleHash, contract.Address(), params.PageLimit, evm.Context.Time, debugMode, program)
+	if err != nil {
+		log.Crit("failed to get local wasm for activated program", "program", contract.Address())
+		return nil, err
+	}
+
 	evmData := &evmData{
 		blockBasefee:    common.BigToHash(evm.Context.BaseFee),
 		chainId:         evm.ChainConfig().ChainID.Uint64(),
@@ -227,7 +237,7 @@ func (p Programs) CallProgram(
 	if contract.CodeAddr != nil {
 		address = *contract.CodeAddr
 	}
-	return callProgram(address, moduleHash, scope, interpreter, tracingInfo, calldata, evmData, goParams, model)
+	return callProgram(address, moduleHash, localAsm, scope, interpreter, tracingInfo, calldata, evmData, goParams, model)
 }
 
 func getWasm(statedb vm.StateDB, program common.Address) ([]byte, error) {
@@ -380,7 +390,7 @@ func (p Programs) SetProgramCached(
 		return err
 	}
 	if cache {
-		cacheProgram(db, moduleHash, program.version, debug, runMode)
+		cacheProgram(db, moduleHash, program, params, debug, time, runMode)
 	} else {
 		evictProgram(db, moduleHash, program.version, debug, runMode, expired)
 	}

arbos/programs/wasm.go

@@ -95,7 +95,7 @@ func activateProgram(
 }
 
 // stub any non-consensus, Rust-side caching updates
-func cacheProgram(db vm.StateDB, module common.Hash, version uint16, debug bool, mode core.MessageRunMode) {
+func cacheProgram(db vm.StateDB, module common.Hash, program Program, params *StylusParams, debug bool, time uint64, runMode core.MessageRunMode) {
 }
 func evictProgram(db vm.StateDB, module common.Hash, version uint16, debug bool, mode core.MessageRunMode, forever bool) {
 }
@@ -128,9 +128,14 @@ func startProgram(module uint32) uint32
 //go:wasmimport programs send_response
 func sendResponse(req_id uint32) uint32
 
+func getLocalAsm(statedb vm.StateDB, moduleHash common.Hash, address common.Address, pagelimit uint16, time uint64, debugMode bool, program Program) ([]byte, error) {
+	return nil, nil
+}
+
 func callProgram(
 	address common.Address,
 	moduleHash common.Hash,
+	_localAsm []byte,
 	scope *vm.ScopeContext,
 	interpreter *vm.EVMInterpreter,
 	tracingInfo *util.TracingInfo,

cmd/nitro/init.go

@@ -178,10 +178,15 @@ func openInitializeChainDb(ctx context.Context, stack *node.Node, config *NodeCo
 				if !arbmath.BigEquals(chainConfig.ChainID, chainId) {
 					return nil, nil, fmt.Errorf("database has chain ID %v but config has chain ID %v (are you sure this database is for the right chain?)", chainConfig.ChainID, chainId)
 				}
-				chainDb, err := stack.OpenDatabaseWithFreezer("l2chaindata", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, config.Persistent.Ancient, "l2chaindata/", false)
+				chainData, err := stack.OpenDatabaseWithFreezer("l2chaindata", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, config.Persistent.Ancient, "l2chaindata/", false)
 				if err != nil {
-					return chainDb, nil, err
+					return nil, nil, err
+				}
+				wasmDb, err := stack.OpenDatabase("wasm", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, "wasm/", false)
+				if err != nil {
+					return nil, nil, err
 				}
+				chainDb := rawdb.WrapDatabaseWithWasm(chainData, wasmDb)
 				err = pruning.PruneChainDb(ctx, chainDb, stack, &config.Init, cacheConfig, l1Client, rollupAddrs, config.Node.ValidatorRequired())
 				if err != nil {
 					return chainDb, nil, fmt.Errorf("error pruning: %w", err)
@@ -230,10 +235,15 @@ func openInitializeChainDb(ctx context.Context, stack *node.Node, config *NodeCo
 
 	var initDataReader statetransfer.InitDataReader = nil
 
-	chainDb, err := stack.OpenDatabaseWithFreezer("l2chaindata", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, config.Persistent.Ancient, "l2chaindata/", false)
+	chainData, err := stack.OpenDatabaseWithFreezer("l2chaindata", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, config.Persistent.Ancient, "l2chaindata/", false)
 	if err != nil {
-		return chainDb, nil, err
+		return nil, nil, err
+	}
+	wasmDb, err := stack.OpenDatabase("wasm", config.Execution.Caching.DatabaseCache, config.Persistent.Handles, "wasm/", false)
+	if err != nil {
+		return nil, nil, err
 	}
+	chainDb := rawdb.WrapDatabaseWithWasm(chainData, wasmDb)
 
 	if config.Init.ImportFile != "" {
 		initDataReader, err = statetransfer.NewJsonInitDataReader(config.Init.ImportFile)

system_tests/common_test.go

@@ -44,6 +44,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -772,8 +773,11 @@ func createL2BlockChainWithStackConfig(
 	stack, err = node.New(stackConfig)
 	Require(t, err)
 
-	chainDb, err := stack.OpenDatabase("l2chaindata", 0, 0, "l2chaindata/", false)
+	chainData, err := stack.OpenDatabase("l2chaindata", 0, 0, "l2chaindata/", false)
 	Require(t, err)
+	wasmData, err := stack.OpenDatabase("wasm", 0, 0, "wasm/", false)
+	Require(t, err)
+	chainDb := rawdb.WrapDatabaseWithWasm(chainData, wasmData)
 	arbDb, err := stack.OpenDatabase("arbitrumdata", 0, 0, "arbitrumdata/", false)
 	Require(t, err)
 
@@ -976,8 +980,12 @@ func Create2ndNodeWithConfig(
 	l2stack, err := node.New(stackConfig)
 	Require(t, err)
 
-	l2chainDb, err := l2stack.OpenDatabase("l2chaindata", 0, 0, "l2chaindata/", false)
+	l2chainData, err := l2stack.OpenDatabase("l2chaindata", 0, 0, "l2chaindata/", false)
+	Require(t, err)
+	wasmData, err := l2stack.OpenDatabase("wasm", 0, 0, "wasm/", false)
 	Require(t, err)
+	l2chainDb := rawdb.WrapDatabaseWithWasm(l2chainData, wasmData)
+
 	l2arbDb, err := l2stack.OpenDatabase("arbitrumdata", 0, 0, "arbitrumdata/", false)
 	Require(t, err)
 	initReader := statetransfer.NewMemoryInitDataReader(l2InitData)

system_tests/program_test.go

@@ -1458,3 +1458,81 @@ func formatTime(duration time.Duration) string {
 	}
 	return fmt.Sprintf("%.2f%s", span, units[unit])
 }
+
+func TestWasmRecreate(t *testing.T) {
+	builder, auth, cleanup := setupProgramTest(t, true)
+	ctx := builder.ctx
+	l2info := builder.L2Info
+	l2client := builder.L2.Client
+	defer cleanup()
+
+	storage := deployWasm(t, ctx, auth, l2client, rustFile("storage"))
+
+	zero := common.Hash{}
+	val := common.HexToHash("0x121233445566")
+
+	// do an onchain call - store value
+	storeTx := l2info.PrepareTxTo("Owner", &storage, l2info.TransferGas, nil, argsForStorageWrite(zero, val))
+	Require(t, l2client.SendTransaction(ctx, storeTx))
+	_, err := EnsureTxSucceeded(ctx, l2client, storeTx)
+	Require(t, err)
+
+	testDir := t.TempDir()
+	nodeBStack := createStackConfigForTest(testDir)
+	nodeB, cleanupB := builder.Build2ndNode(t, &SecondNodeParams{stackConfig: nodeBStack})
+
+	_, err = EnsureTxSucceeded(ctx, nodeB.Client, storeTx)
+	Require(t, err)
+
+	// make sure reading 2nd value succeeds from 2nd node
+	loadTx := l2info.PrepareTxTo("Owner", &storage, l2info.TransferGas, nil, argsForStorageRead(zero))
+	result, err := arbutil.SendTxAsCall(ctx, nodeB.Client, loadTx, l2info.GetAddress("Owner"), nil, true)
+	Require(t, err)
+	if common.BytesToHash(result) != val {
+		Fatal(t, "got wrong value")
+	}
+	// close nodeB
+	cleanupB()
+
+	// delete wasm dir of nodeB
+
+	wasmPath := filepath.Join(testDir, "system_tests.test", "wasm")
+	dirContents, err := os.ReadDir(wasmPath)
+	Require(t, err)
+	if len(dirContents) == 0 {
+		Fatal(t, "not contents found before delete")
+	}
+	os.RemoveAll(wasmPath)
+
+	// recreate nodeB - using same source dir (wasm deleted)
+	nodeB, cleanupB = builder.Build2ndNode(t, &SecondNodeParams{stackConfig: nodeBStack})
+
+	// test nodeB - sees existing transaction
+	_, err = EnsureTxSucceeded(ctx, nodeB.Client, storeTx)
+	Require(t, err)
+
+	// test nodeB - answers eth_call (requires reloading wasm)
+	result, err = arbutil.SendTxAsCall(ctx, nodeB.Client, loadTx, l2info.GetAddress("Owner"), nil, true)
+	Require(t, err)
+	if common.BytesToHash(result) != val {
+		Fatal(t, "got wrong value")
+	}
+
+	// send new tx (requires wasm) and check nodeB sees it as well
+	Require(t, l2client.SendTransaction(ctx, loadTx))
+
+	_, err = EnsureTxSucceeded(ctx, l2client, loadTx)
+	Require(t, err)
+
+	_, err = EnsureTxSucceeded(ctx, nodeB.Client, loadTx)
+	Require(t, err)
+
+	cleanupB()
+	dirContents, err = os.ReadDir(wasmPath)
+	Require(t, err)
+	if len(dirContents) == 0 {
+		Fatal(t, "not contents found before delete")
+	}
+	os.RemoveAll(wasmPath)
+
+}