laconicd/importer/importer_test.go

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package importer
import (
"flag"
"fmt"
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"io"
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"math/big"
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"os"
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"os/signal"
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"runtime/pprof"
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"sort"
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"syscall"
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"testing"
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"time"
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"github.com/cosmos/cosmos-sdk/codec"
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"github.com/cosmos/cosmos-sdk/store"
sdkstore "github.com/cosmos/cosmos-sdk/store/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
"github.com/cosmos/cosmos-sdk/x/params"
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"github.com/cosmos/ethermint/core"
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"github.com/cosmos/ethermint/types"
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evmtypes "github.com/cosmos/ethermint/x/evm/types"
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ethcmn "github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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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"
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ethparams "github.com/ethereum/go-ethereum/params"
ethrlp "github.com/ethereum/go-ethereum/rlp"
"github.com/stretchr/testify/require"
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abci "github.com/tendermint/tendermint/abci/types"
tmlog "github.com/tendermint/tendermint/libs/log"
dbm "github.com/tendermint/tm-db"
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)
var (
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flagDataDir string
flagBlockchain string
flagCPUProfile string
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genInvestor = ethcmn.HexToAddress("0x756F45E3FA69347A9A973A725E3C98bC4db0b5a0")
accKey = sdk.NewKVStoreKey("acc")
storageKey = sdk.NewKVStoreKey(evmtypes.StoreKey)
codeKey = sdk.NewKVStoreKey(evmtypes.CodeKey)
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logger = tmlog.NewNopLogger()
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rewardBig8 = big.NewInt(8)
rewardBig32 = big.NewInt(32)
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)
func init() {
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flag.StringVar(&flagCPUProfile, "cpu-profile", "", "write CPU profile")
flag.StringVar(&flagDataDir, "datadir", "", "test data directory for state storage")
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flag.StringVar(&flagBlockchain, "blockchain", "blockchain", "ethereum block export file (blocks to import)")
testing.Init()
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flag.Parse()
}
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func newTestCodec() *codec.Codec {
cdc := codec.New()
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evmtypes.RegisterCodec(cdc)
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types.RegisterCodec(cdc)
auth.RegisterCodec(cdc)
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sdk.RegisterCodec(cdc)
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codec.RegisterCrypto(cdc)
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return cdc
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}
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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)
}()
}
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func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, ak auth.AccountKeeper) {
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genBlock := ethcore.DefaultGenesisBlock()
ms := cms.CacheMultiStore()
ctx := sdk.NewContext(ms, abci.Header{}, false, logger)
stateDB := evmtypes.NewCommitStateDB(ctx, codeKey, storageKey, ak)
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// 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)
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require.NoError(t, err)
// persist multi-store cache state
ms.Write()
// persist multi-store root state
cms.Commit()
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// verify account mapper state
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genAcc := ak.GetAccount(ctx, sdk.AccAddress(genInvestor.Bytes()))
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require.NotNil(t, genAcc)
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require.Equal(t, sdk.NewIntFromBigInt(b), genAcc.GetCoins().AmountOf(types.DenomDefault))
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}
func TestImportBlocks(t *testing.T) {
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if flagDataDir == "" {
flagDataDir = os.TempDir()
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}
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if flagCPUProfile != "" {
f, err := os.Create(flagCPUProfile)
require.NoError(t, err, "failed to create CPU profile")
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err = pprof.StartCPUProfile(f)
require.NoError(t, err, "failed to start CPU profile")
}
db := dbm.NewDB("state", dbm.GoLevelDBBackend, flagDataDir)
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defer cleanup()
trapSignals()
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// create logger, codec and root multi-store
cdc := newTestCodec()
cms := store.NewCommitMultiStore(db)
// The ParamsKeeper handles parameter storage for the application
keyParams := sdk.NewKVStoreKey(params.StoreKey)
tkeyParams := sdk.NewTransientStoreKey(params.TStoreKey)
paramsKeeper := params.NewKeeper(cdc, keyParams, tkeyParams, params.DefaultCodespace)
// Set specific supspaces
authSubspace := paramsKeeper.Subspace(auth.DefaultParamspace)
ak := auth.NewAccountKeeper(cdc, accKey, authSubspace, types.ProtoBaseAccount)
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// mount stores
keys := []*sdk.KVStoreKey{accKey, storageKey, codeKey}
for _, key := range keys {
cms.MountStoreWithDB(key, sdk.StoreTypeIAVL, nil)
}
cms.SetPruning(sdkstore.PruneNothing)
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// load latest version (root)
err := cms.LoadLatestVersion()
require.NoError(t, err)
// set and test genesis block
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createAndTestGenesis(t, cms, ak)
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// open blockchain export file
blockchainInput, err := os.Open(flagBlockchain)
require.Nil(t, err)
// nolint: gosec
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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)
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ctx = ctx.WithBlockHeight(int64(block.NumberU64()))
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stateDB := createStateDB(ctx, ak)
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if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
applyDAOHardFork(stateDB)
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}
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for i, tx := range block.Transactions() {
stateDB.Prepare(tx.Hash(), block.Hash(), i)
_, _, err = applyTransaction(
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chainConfig, chainContext, nil, gp, stateDB, header, tx, usedGas, vmConfig,
)
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require.NoError(t, err, "failed to apply tx at block %d; tx: %X", block.NumberU64(), tx.Hash())
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}
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// 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
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ms.Write()
cms.Commit()
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// block debugging output
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if block.NumberU64() > 0 && block.NumberU64()%1000 == 0 {
fmt.Printf("processed block: %d (time so far: %v)\n", block.NumberU64(), time.Since(startTime))
}
}
}
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func createStateDB(ctx sdk.Context, ak auth.AccountKeeper) *evmtypes.CommitStateDB {
stateDB := evmtypes.NewCommitStateDB(ctx, codeKey, storageKey, ak)
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return stateDB
}
// 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(
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config *ethparams.ChainConfig, stateDB *evmtypes.CommitStateDB,
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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, 0, 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
}