forked from cerc-io/laconicd-deprecated
d9d45b48b9
- Implements Keeper. This is a wrapper around the "real" keeper (CSDB). Since we need to pass the context into the keeper we need to abstract the CSDB from the - Adds WithContext() to CSDB to support the above requirement - Adds Keeper to app
373 lines
12 KiB
Go
373 lines
12 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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"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"
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sdkstore "github.com/cosmos/cosmos-sdk/store/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/auth"
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"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"
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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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ethcrypto "github.com/ethereum/go-ethereum/crypto"
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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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// paramsKey = sdk.NewKVStoreKey("params")
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// tParamsKey = sdk.NewTransientStoreKey("transient_params")
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accKey = sdk.NewKVStoreKey("acc")
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storageKey = sdk.NewKVStoreKey(evmtypes.EvmStoreKey)
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codeKey = sdk.NewKVStoreKey(evmtypes.EvmCodeKey)
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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", "blockchain", "ethereum block export file (blocks to import)")
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flag.Parse()
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}
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func newTestCodec() *codec.Codec {
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cdc := codec.New()
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evmtypes.RegisterCodec(cdc)
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types.RegisterCodec(cdc)
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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() {
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fmt.Println("cleaning up test execution...")
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os.RemoveAll(flagDataDir)
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if flagCPUProfile != "" {
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pprof.StopCPUProfile()
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}
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}
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func trapSignals() {
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sigs := make(chan os.Signal, 1)
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signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
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go func() {
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<-sigs
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cleanup()
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os.Exit(1)
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}()
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}
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func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, ak auth.AccountKeeper) {
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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 := evmtypes.NewCommitStateDB(ctx, ak, storageKey, codeKey)
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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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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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}
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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.GoLevelDBBackend, flagDataDir)
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defer cleanup()
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trapSignals()
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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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// The ParamsKeeper handles parameter storage for the application
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keyParams := sdk.NewKVStoreKey(params.StoreKey)
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tkeyParams := sdk.NewTransientStoreKey(params.TStoreKey)
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paramsKeeper := params.NewKeeper(cdc, keyParams, tkeyParams, params.DefaultCodespace)
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// Set specific supspaces
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authSubspace := paramsKeeper.Subspace(auth.DefaultParamspace)
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ak := auth.NewAccountKeeper(cdc, accKey, authSubspace, types.ProtoBaseAccount)
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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(sdkstore.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, ak)
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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, ak)
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if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
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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 = 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, ak auth.AccountKeeper) *evmtypes.CommitStateDB {
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stateDB := evmtypes.NewCommitStateDB(ctx, ak, storageKey, codeKey)
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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 *evmtypes.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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// ApplyDAOHardFork modifies the state database according to the DAO hard-fork
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// rules, transferring all balances of a set of DAO accounts to a single refund
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// contract.
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// Code is pulled from go-ethereum 1.9 because the StateDB interface does not include the
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// SetBalance function implementation
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// Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/consensus/misc/dao.go#L74
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func applyDAOHardFork(statedb *evmtypes.CommitStateDB) {
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// Retrieve the contract to refund balances into
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if !statedb.Exist(ethparams.DAORefundContract) {
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statedb.CreateAccount(ethparams.DAORefundContract)
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}
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// Move every DAO account and extra-balance account funds into the refund contract
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for _, addr := range ethparams.DAODrainList() {
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statedb.AddBalance(ethparams.DAORefundContract, statedb.GetBalance(addr))
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statedb.SetBalance(addr, new(big.Int))
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}
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}
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// ApplyTransaction attempts to apply a transaction to the given state database
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// and uses the input parameters for its environment. It returns the receipt
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// for the transaction, gas used and an error if the transaction failed,
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// indicating the block was invalid.
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// Function is also pulled from go-ethereum 1.9 because of the imcompatible usage
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// Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/core/state_processor.go#L88
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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) {
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msg, err := tx.AsMessage(ethtypes.MakeSigner(config, header.Number))
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if err != nil {
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return nil, 0, err
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}
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// Create a new context to be used in the EVM environment
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context := ethcore.NewEVMContext(msg, header, bc, author)
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// Create a new environment which holds all relevant information
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// about the transaction and calling mechanisms.
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vmenv := ethvm.NewEVM(context, statedb, config, cfg)
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// Apply the transaction to the current state (included in the env)
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_, gas, failed, err := ethcore.ApplyMessage(vmenv, msg, gp)
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if err != nil {
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return nil, 0, err
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}
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// Update the state with pending changes
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var root []byte
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if config.IsByzantium(header.Number) {
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statedb.Finalise(true)
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} else {
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root = statedb.IntermediateRoot(config.IsEIP158(header.Number)).Bytes()
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}
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*usedGas += gas
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// Create a new receipt for the transaction, storing the intermediate root and gas used by the tx
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// based on the eip phase, we're passing whether the root touch-delete accounts.
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receipt := ethtypes.NewReceipt(root, failed, *usedGas)
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receipt.TxHash = tx.Hash()
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receipt.GasUsed = gas
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// if the transaction created a contract, store the creation address in the receipt.
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if msg.To() == nil {
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receipt.ContractAddress = ethcrypto.CreateAddress(vmenv.Context.Origin, tx.Nonce())
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}
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// Set the receipt logs and create a bloom for filtering
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receipt.Logs = statedb.GetLogs(tx.Hash())
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receipt.Bloom = ethtypes.CreateBloom(ethtypes.Receipts{receipt})
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receipt.BlockHash = statedb.BlockHash()
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receipt.BlockNumber = header.Number
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receipt.TransactionIndex = uint(statedb.TxIndex())
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return receipt, gas, err
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}
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