284 lines
7.7 KiB
Go
284 lines
7.7 KiB
Go
package importer
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import (
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"flag"
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"fmt"
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"io"
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"math/big"
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"os"
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"runtime/pprof"
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"sort"
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"testing"
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"time"
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"github.com/cosmos/cosmos-sdk/store"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/wire"
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"github.com/cosmos/cosmos-sdk/x/auth"
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"github.com/cosmos/ethermint/core"
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"github.com/cosmos/ethermint/state"
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"github.com/cosmos/ethermint/types"
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"github.com/cosmos/ethermint/x/bank"
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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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ethmisc "github.com/ethereum/go-ethereum/consensus/misc"
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ethcore "github.com/ethereum/go-ethereum/core"
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ethtypes "github.com/ethereum/go-ethereum/core/types"
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ethvm "github.com/ethereum/go-ethereum/core/vm"
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ethparams "github.com/ethereum/go-ethereum/params"
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ethrlp "github.com/ethereum/go-ethereum/rlp"
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"github.com/stretchr/testify/require"
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abci "github.com/tendermint/tendermint/abci/types"
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dbm "github.com/tendermint/tendermint/libs/db"
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tmlog "github.com/tendermint/tendermint/libs/log"
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)
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var (
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flagDataDir string
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flagBlockchain string
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flagCPUProfile string
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miner501 = ethcmn.HexToAddress("0x35e8e5dC5FBd97c5b421A80B596C030a2Be2A04D")
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genInvestor = ethcmn.HexToAddress("0x756F45E3FA69347A9A973A725E3C98bC4db0b5a0")
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accKey = sdk.NewKVStoreKey("acc")
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storageKey = sdk.NewKVStoreKey("storage")
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codeKey = sdk.NewKVStoreKey("code")
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logger = tmlog.NewNopLogger()
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rewardBig8 = big.NewInt(8)
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rewardBig32 = big.NewInt(32)
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)
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func init() {
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flag.StringVar(&flagCPUProfile, "cpu-profile", "", "write CPU profile")
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flag.StringVar(&flagDataDir, "datadir", "", "test data directory for state storage")
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flag.StringVar(&flagBlockchain, "blockchain", "data/blockchain", "ethereum block export file (blocks to import)")
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flag.Parse()
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}
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func newTestCodec() *wire.Codec {
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codec := wire.NewCodec()
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types.RegisterWire(codec)
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wire.RegisterCrypto(codec)
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return codec
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}
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func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, am auth.AccountMapper) {
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genBlock := ethcore.DefaultGenesisBlock()
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ms := cms.CacheMultiStore()
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ctx := sdk.NewContext(ms, abci.Header{}, false, logger)
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stateDB, err := state.NewCommitStateDB(ctx, am, storageKey, codeKey)
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require.NoError(t, err, "failed to create a StateDB instance")
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// sort the addresses and insertion of key/value pairs matters
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genAddrs := make([]string, len(genBlock.Alloc))
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i := 0
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for addr := range genBlock.Alloc {
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genAddrs[i] = addr.String()
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i++
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}
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sort.Strings(genAddrs)
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for _, addrStr := range genAddrs {
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addr := ethcmn.HexToAddress(addrStr)
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acc := genBlock.Alloc[addr]
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stateDB.AddBalance(addr, acc.Balance)
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stateDB.SetCode(addr, acc.Code)
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stateDB.SetNonce(addr, acc.Nonce)
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for key, value := range acc.Storage {
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stateDB.SetState(addr, key, value)
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}
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}
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// get balance of one of the genesis account having 200 ETH
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b := stateDB.GetBalance(genInvestor)
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require.Equal(t, "200000000000000000000", b.String())
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// commit the stateDB with 'false' to delete empty objects
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//
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// NOTE: Commit does not yet return the intra merkle root (version)
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_, err = stateDB.Commit(false)
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require.NoError(t, err)
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// persist multi-store cache state
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ms.Write()
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// persist multi-store root state
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commitID := cms.Commit()
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require.Equal(t, "F162678AD57BBE352BE0CFCFCD90E394C4781D31", fmt.Sprintf("%X", commitID.Hash))
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// verify account mapper state
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genAcc := am.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(bank.DenomEthereum))
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}
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func TestImportBlocks(t *testing.T) {
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if flagDataDir == "" {
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flagDataDir = os.TempDir()
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}
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if flagCPUProfile != "" {
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f, err := os.Create(flagCPUProfile)
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require.NoError(t, err, "failed to create CPU profile")
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err = pprof.StartCPUProfile(f)
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require.NoError(t, err, "failed to start CPU profile")
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}
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db := dbm.NewDB("state", dbm.LevelDBBackend, flagDataDir)
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defer func() {
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fmt.Println("cleaning up")
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os.RemoveAll(flagDataDir)
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pprof.StopCPUProfile()
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}()
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// create logger, codec and root multi-store
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cdc := newTestCodec()
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cms := store.NewCommitMultiStore(db)
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// create account mapper
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am := auth.NewAccountMapper(
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cdc,
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accKey,
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types.ProtoBaseAccount,
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)
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// mount stores
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keys := []*sdk.KVStoreKey{accKey, storageKey, codeKey}
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for _, key := range keys {
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cms.MountStoreWithDB(key, sdk.StoreTypeIAVL, nil)
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}
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cms.SetPruning(sdk.PruneNothing)
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// load latest version (root)
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err := cms.LoadLatestVersion()
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require.NoError(t, err)
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// set and test genesis block
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createAndTestGenesis(t, cms, am)
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// open blockchain export file
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blockchainInput, err := os.Open(flagBlockchain)
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require.Nil(t, err)
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defer blockchainInput.Close()
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// ethereum mainnet config
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chainContext := core.NewChainContext()
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vmConfig := ethvm.Config{}
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chainConfig := ethparams.MainnetChainConfig
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// create RLP stream for exported blocks
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stream := ethrlp.NewStream(blockchainInput, 0)
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startTime := time.Now()
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var block ethtypes.Block
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for {
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err = stream.Decode(&block)
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if err == io.EOF {
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break
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}
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require.NoError(t, err, "failed to decode block")
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var (
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usedGas = new(uint64)
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gp = new(ethcore.GasPool).AddGas(block.GasLimit())
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)
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header := block.Header()
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chainContext.Coinbase = header.Coinbase
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chainContext.SetHeader(block.NumberU64(), header)
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// Create a cached-wrapped multi-store based on the commit multi-store and
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// create a new context based off of that.
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ms := cms.CacheMultiStore()
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ctx := sdk.NewContext(ms, abci.Header{}, false, logger)
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ctx = ctx.WithBlockHeight(int64(block.NumberU64()))
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stateDB := createStateDB(t, ctx, am)
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if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
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ethmisc.ApplyDAOHardFork(stateDB)
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}
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for i, tx := range block.Transactions() {
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stateDB.Prepare(tx.Hash(), block.Hash(), i)
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_, _, err = ethcore.ApplyTransaction(
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chainConfig, chainContext, nil, gp, stateDB, header, tx, usedGas, vmConfig,
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)
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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
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accumulateRewards(chainConfig, stateDB, header, block.Uncles())
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// commit stateDB
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_, err := stateDB.Commit(chainConfig.IsEIP158(block.Number()))
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require.NoError(t, err, "failed to commit StateDB")
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// simulate BaseApp EndBlocker commitment
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ms.Write()
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cms.Commit()
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// block debugging output
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if block.NumberU64() > 0 && block.NumberU64()%1000 == 0 {
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fmt.Printf("processed block: %d (time so far: %v)\n", block.NumberU64(), time.Since(startTime))
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}
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}
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}
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func createStateDB(t *testing.T, ctx sdk.Context, am auth.AccountMapper) *state.CommitStateDB {
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stateDB, err := state.NewCommitStateDB(ctx, am, storageKey, codeKey)
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require.NoError(t, err, "failed to create a StateDB instance")
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return stateDB
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}
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// accumulateRewards credits the coinbase of the given block with the mining
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// reward. The total reward consists of the static block reward and rewards for
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// included uncles. The coinbase of each uncle block is also rewarded.
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func accumulateRewards(
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config *ethparams.ChainConfig, stateDB *state.CommitStateDB,
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header *ethtypes.Header, uncles []*ethtypes.Header,
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) {
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// select the correct block reward based on chain progression
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blockReward := ethash.FrontierBlockReward
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if config.IsByzantium(header.Number) {
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blockReward = ethash.ByzantiumBlockReward
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}
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// accumulate the rewards for the miner and any included uncles
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reward := new(big.Int).Set(blockReward)
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r := new(big.Int)
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for _, uncle := range uncles {
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r.Add(uncle.Number, rewardBig8)
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r.Sub(r, header.Number)
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r.Mul(r, blockReward)
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r.Div(r, rewardBig8)
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stateDB.AddBalance(uncle.Coinbase, r)
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r.Div(blockReward, rewardBig32)
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reward.Add(reward, r)
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}
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stateDB.AddBalance(header.Coinbase, reward)
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}
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