package importer import ( "flag" "fmt" "io" "math/big" "os" "os/signal" "runtime/pprof" "sort" "syscall" "testing" "time" sdkcodec "github.com/cosmos/cosmos-sdk/codec" "github.com/cosmos/cosmos-sdk/store" sdkstore "github.com/cosmos/cosmos-sdk/store/types" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/x/auth" "github.com/cosmos/cosmos-sdk/x/bank" "github.com/cosmos/cosmos-sdk/x/params" "github.com/cosmos/ethermint/codec" "github.com/cosmos/ethermint/core" emintcrypto "github.com/cosmos/ethermint/crypto" "github.com/cosmos/ethermint/types" evmtypes "github.com/cosmos/ethermint/x/evm/types" ethcmn "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/consensus/ethash" ethcore "github.com/ethereum/go-ethereum/core" ethtypes "github.com/ethereum/go-ethereum/core/types" ethvm "github.com/ethereum/go-ethereum/core/vm" ethcrypto "github.com/ethereum/go-ethereum/crypto" ethparams "github.com/ethereum/go-ethereum/params" ethrlp "github.com/ethereum/go-ethereum/rlp" "github.com/stretchr/testify/require" abci "github.com/tendermint/tendermint/abci/types" tmlog "github.com/tendermint/tendermint/libs/log" dbm "github.com/tendermint/tm-db" ) var ( flagDataDir string flagBlockchain string flagCPUProfile string genInvestor = ethcmn.HexToAddress("0x756F45E3FA69347A9A973A725E3C98bC4db0b5a0") accKey = sdk.NewKVStoreKey(auth.StoreKey) storeKey = sdk.NewKVStoreKey(evmtypes.StoreKey) codeKey = sdk.NewKVStoreKey(evmtypes.CodeKey) logger = tmlog.NewNopLogger() rewardBig8 = big.NewInt(8) rewardBig32 = big.NewInt(32) ) func init() { flag.StringVar(&flagCPUProfile, "cpu-profile", "", "write CPU profile") flag.StringVar(&flagDataDir, "datadir", "", "test data directory for state storage") flag.StringVar(&flagBlockchain, "blockchain", "blockchain", "ethereum block export file (blocks to import)") testing.Init() flag.Parse() } func newTestCodec() *sdkcodec.Codec { cdc := sdkcodec.New() evmtypes.RegisterCodec(cdc) types.RegisterCodec(cdc) auth.RegisterCodec(cdc) bank.RegisterCodec(cdc) sdk.RegisterCodec(cdc) emintcrypto.RegisterCodec(cdc) sdkcodec.RegisterCrypto(cdc) return cdc } func cleanup() { fmt.Println("cleaning up test execution...") os.RemoveAll(flagDataDir) if flagCPUProfile != "" { pprof.StopCPUProfile() } } func trapSignals() { sigs := make(chan os.Signal, 1) signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM) go func() { <-sigs cleanup() os.Exit(1) }() } // nolint: interfacer func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, ak auth.AccountKeeper, bk bank.Keeper) { genBlock := ethcore.DefaultGenesisBlock() ms := cms.CacheMultiStore() ctx := sdk.NewContext(ms, abci.Header{}, false, logger) stateDB := evmtypes.NewCommitStateDB(ctx, codeKey, storeKey, ak, bk) // sort the addresses and insertion of key/value pairs matters genAddrs := make([]string, len(genBlock.Alloc)) i := 0 for addr := range genBlock.Alloc { genAddrs[i] = addr.String() i++ } sort.Strings(genAddrs) for _, addrStr := range genAddrs { addr := ethcmn.HexToAddress(addrStr) acc := genBlock.Alloc[addr] stateDB.AddBalance(addr, acc.Balance) stateDB.SetCode(addr, acc.Code) stateDB.SetNonce(addr, acc.Nonce) for key, value := range acc.Storage { stateDB.SetState(addr, key, value) } } // get balance of one of the genesis account having 200 ETH b := stateDB.GetBalance(genInvestor) require.Equal(t, "200000000000000000000", b.String()) // commit the stateDB with 'false' to delete empty objects // // NOTE: Commit does not yet return the intra merkle root (version) _, err := stateDB.Commit(false) require.NoError(t, err) // persist multi-store cache state ms.Write() // persist multi-store root state cms.Commit() // verify account mapper state genAcc := ak.GetAccount(ctx, sdk.AccAddress(genInvestor.Bytes())) require.NotNil(t, genAcc) balance := bk.GetBalance(ctx, genAcc.GetAddress(), types.DenomDefault) require.Equal(t, sdk.NewIntFromBigInt(b), balance.Amount) } func TestImportBlocks(t *testing.T) { if flagDataDir == "" { flagDataDir = os.TempDir() } if flagCPUProfile != "" { f, err := os.Create(flagCPUProfile) require.NoError(t, err, "failed to create CPU profile") err = pprof.StartCPUProfile(f) require.NoError(t, err, "failed to start CPU profile") } db := dbm.NewDB("state", dbm.GoLevelDBBackend, flagDataDir) defer cleanup() trapSignals() cdc := newTestCodec() appCodec := codec.NewAppCodec(cdc) cms := store.NewCommitMultiStore(db) // The ParamsKeeper handles parameter storage for the application bankKey := sdk.NewKVStoreKey(bank.StoreKey) keyParams := sdk.NewKVStoreKey(params.StoreKey) tkeyParams := sdk.NewTransientStoreKey(params.TStoreKey) paramsKeeper := params.NewKeeper(appCodec, keyParams, tkeyParams) // Set specific supspaces authSubspace := paramsKeeper.Subspace(auth.DefaultParamspace) bankSubspace := paramsKeeper.Subspace(bank.DefaultParamspace) ak := auth.NewAccountKeeper(appCodec, accKey, authSubspace, types.ProtoAccount) bk := bank.NewBaseKeeper(appCodec, bankKey, ak, bankSubspace, nil) // mount stores keys := []*sdk.KVStoreKey{accKey, bankKey, storeKey, codeKey} for _, key := range keys { cms.MountStoreWithDB(key, sdk.StoreTypeIAVL, nil) } cms.SetPruning(sdkstore.PruneNothing) // load latest version (root) err := cms.LoadLatestVersion() require.NoError(t, err) // set and test genesis block createAndTestGenesis(t, cms, ak, bk) // open blockchain export file blockchainInput, err := os.Open(flagBlockchain) require.Nil(t, err) // nolint: gosec defer blockchainInput.Close() // ethereum mainnet config chainContext := core.NewChainContext() vmConfig := ethvm.Config{} chainConfig := ethparams.MainnetChainConfig // create RLP stream for exported blocks stream := ethrlp.NewStream(blockchainInput, 0) startTime := time.Now() var block ethtypes.Block for { err = stream.Decode(&block) if err == io.EOF { break } require.NoError(t, err, "failed to decode block") var ( usedGas = new(uint64) gp = new(ethcore.GasPool).AddGas(block.GasLimit()) ) header := block.Header() chainContext.Coinbase = header.Coinbase chainContext.SetHeader(block.NumberU64(), header) // Create a cached-wrapped multi-store based on the commit multi-store and // create a new context based off of that. ms := cms.CacheMultiStore() ctx := sdk.NewContext(ms, abci.Header{}, false, logger) ctx = ctx.WithBlockHeight(int64(block.NumberU64())) stateDB := createStateDB(ctx, ak, bk) if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 { applyDAOHardFork(stateDB) } for i, tx := range block.Transactions() { stateDB.Prepare(tx.Hash(), block.Hash(), i) receipt, gas, err := applyTransaction( chainConfig, chainContext, nil, gp, stateDB, header, tx, usedGas, vmConfig, ) require.NoError(t, err, "failed to apply tx at block %d; tx: %X; gas %d; receipt:%v", block.NumberU64(), tx.Hash(), gas, receipt) require.NotNil(t, receipt) } // apply mining rewards accumulateRewards(chainConfig, stateDB, header, block.Uncles()) // commit stateDB _, err := stateDB.Commit(chainConfig.IsEIP158(block.Number())) require.NoError(t, err, "failed to commit StateDB") // simulate BaseApp EndBlocker commitment ms.Write() cms.Commit() // block debugging output if block.NumberU64() > 0 && block.NumberU64()%1000 == 0 { fmt.Printf("processed block: %d (time so far: %v)\n", block.NumberU64(), time.Since(startTime)) } } } // nolint: interfacer func createStateDB(ctx sdk.Context, ak auth.AccountKeeper, bk bank.Keeper) *evmtypes.CommitStateDB { return evmtypes.NewCommitStateDB(ctx, codeKey, storeKey, ak, bk) } // accumulateRewards credits the coinbase of the given block with the mining // reward. The total reward consists of the static block reward and rewards for // included uncles. The coinbase of each uncle block is also rewarded. func accumulateRewards( config *ethparams.ChainConfig, stateDB *evmtypes.CommitStateDB, header *ethtypes.Header, uncles []*ethtypes.Header, ) { // select the correct block reward based on chain progression blockReward := ethash.FrontierBlockReward if config.IsByzantium(header.Number) { blockReward = ethash.ByzantiumBlockReward } // accumulate the rewards for the miner and any included uncles reward := new(big.Int).Set(blockReward) r := new(big.Int) for _, uncle := range uncles { r.Add(uncle.Number, rewardBig8) r.Sub(r, header.Number) r.Mul(r, blockReward) r.Div(r, rewardBig8) stateDB.AddBalance(uncle.Coinbase, r) r.Div(blockReward, rewardBig32) reward.Add(reward, r) } stateDB.AddBalance(header.Coinbase, reward) } // ApplyDAOHardFork modifies the state database according to the DAO hard-fork // rules, transferring all balances of a set of DAO accounts to a single refund // contract. // Code is pulled from go-ethereum 1.9 because the StateDB interface does not include the // SetBalance function implementation // Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/consensus/misc/dao.go#L74 func applyDAOHardFork(statedb *evmtypes.CommitStateDB) { // Retrieve the contract to refund balances into if !statedb.Exist(ethparams.DAORefundContract) { statedb.CreateAccount(ethparams.DAORefundContract) } // Move every DAO account and extra-balance account funds into the refund contract for _, addr := range ethparams.DAODrainList() { statedb.AddBalance(ethparams.DAORefundContract, statedb.GetBalance(addr)) statedb.SetBalance(addr, new(big.Int)) } } // ApplyTransaction attempts to apply a transaction to the given state database // and uses the input parameters for its environment. It returns the receipt // for the transaction, gas used and an error if the transaction failed, // indicating the block was invalid. // Function is also pulled from go-ethereum 1.9 because of the incompatible usage // Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/core/state_processor.go#L88 func applyTransaction( config *ethparams.ChainConfig, bc ethcore.ChainContext, author *ethcmn.Address, gp *ethcore.GasPool, statedb *evmtypes.CommitStateDB, header *ethtypes.Header, tx *ethtypes.Transaction, usedGas *uint64, cfg ethvm.Config, ) (*ethtypes.Receipt, uint64, error) { msg, err := tx.AsMessage(ethtypes.MakeSigner(config, header.Number)) if err != nil { return nil, 0, err } // Create a new context to be used in the EVM environment context := ethcore.NewEVMContext(msg, header, bc, author) // Create a new environment which holds all relevant information // about the transaction and calling mechanisms. vmenv := ethvm.NewEVM(context, statedb, config, cfg) // Apply the transaction to the current state (included in the env) _, gas, failed, err := ethcore.ApplyMessage(vmenv, msg, gp) if err != nil { return nil, gas, err } // Update the state with pending changes var intRoot ethcmn.Hash if config.IsByzantium(header.Number) { err = statedb.Finalise(true) } else { intRoot, err = statedb.IntermediateRoot(config.IsEIP158(header.Number)) } if err != nil { return nil, gas, err } root := intRoot.Bytes() *usedGas += gas // Create a new receipt for the transaction, storing the intermediate root and gas used by the tx // based on the eip phase, we're passing whether the root touch-delete accounts. receipt := ethtypes.NewReceipt(root, failed, *usedGas) receipt.TxHash = tx.Hash() receipt.GasUsed = gas // if the transaction created a contract, store the creation address in the receipt. if msg.To() == nil { receipt.ContractAddress = ethcrypto.CreateAddress(vmenv.Context.Origin, tx.Nonce()) } // Set the receipt logs and create a bloom for filtering receipt.Logs, err = statedb.GetLogs(tx.Hash()) receipt.Bloom = ethtypes.CreateBloom(ethtypes.Receipts{receipt}) receipt.BlockHash = statedb.BlockHash() receipt.BlockNumber = header.Number receipt.TransactionIndex = uint(statedb.TxIndex()) return receipt, gas, err }