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fix: commented out importer test (#691)

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* fix: commented out importer test (fixes #659)

updated the importer test as a test suite
plus added the block export file
from https://github.com/cosmos/ethermint/blob/development/importer/blockchain

* remove a dead branch

* re-added CI check

* go 1.17
This commit is contained in:
Tomas Tauber 2021-10-22 18:20:23 +08:00 committed by GitHub
parent ac75a9a4a4
commit 1474c70719
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 292 additions and 423 deletions
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39
.github/workflows/test.yml vendored
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@ -55,26 +55,25 @@ jobs:
fail_ci_if_error: true fail_ci_if_error: true
if: env.GIT_DIFF if: env.GIT_DIFF
# TODO: refactor before enabling test-importer:
# test-importer: runs-on: ubuntu-latest
# runs-on: ubuntu-latest timeout-minutes: 10
# timeout-minutes: 10 steps:
# steps: - uses: actions/setup-go@v2.1.4
# - uses: actions/checkout@v2.3.5 with:
# - uses: actions/setup-go@v2.1.4 go-version: 1.17
# with: - uses: actions/checkout@v2
# go-version: 1.17 - uses: technote-space/get-diff-action@v5
# - uses: technote-space/get-diff-action@v5 id: git_diff
# id: git_diff with:
# with: SUFFIX_FILTER: |
# SUFFIX_FILTER: | .go
# .go .mod
# .mod .sum
# .sum - name: test-importer
# - name: test-importer run: |
# run: | make test-import
# make test-import if: "env.GIT_DIFF != ''"
# if: "env.GIT_DIFF != ''"
test-solidity: test-solidity:
runs-on: ubuntu-latest runs-on: ubuntu-latest

6
Makefile
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@ -257,7 +257,7 @@ godocs:
test: test-unit test: test-unit
test-all: test-unit test-race test-all: test-unit test-race
PACKAGES_UNIT=$(shell go list ./...) PACKAGES_UNIT=$(shell go list ./... | grep -Ev 'vendor|importer')
TEST_PACKAGES=./... TEST_PACKAGES=./...
TEST_TARGETS := test-unit test-unit-cover test-race TEST_TARGETS := test-unit test-unit-cover test-race
@ -282,9 +282,7 @@ else
endif endif
test-import: test-import:
@go test ./tests/importer -v --vet=off --run=TestImportBlocks --datadir tmp \ go test -run TestImporterTestSuite -v --vet=off github.com/tharsis/ethermint/tests/importer
--blockchain blockchain
rm -rf tests/importer/tmp
test-rpc: test-rpc:
./scripts/integration-test-all.sh -t "rpc" -q 1 -z 1 -s 2 -m "rpc" -r "true" ./scripts/integration-test-all.sh -t "rpc" -q 1 -z 1 -s 2 -m "rpc" -r "true"

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tests/importer/blockchain Normal file
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670
tests/importer/importer_test.go
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@ -1,401 +1,273 @@
package importer package importer
// import ( import (
// "flag" "flag"
// "fmt" "fmt"
// "io" "io"
// "math/big" "math/big"
// "os" "os"
// "os/signal" "testing"
// "runtime/pprof" "time"
// "sort"
// "syscall" "github.com/tharsis/ethermint/app"
// "testing"
// "time" "github.com/stretchr/testify/require"
"github.com/stretchr/testify/suite"
// "github.com/google/uuid"
// "github.com/stretchr/testify/require" sdk "github.com/cosmos/cosmos-sdk/types"
// sdkcodec "github.com/cosmos/cosmos-sdk/codec" evmkeeper "github.com/tharsis/ethermint/x/evm/keeper"
// codectypes "github.com/cosmos/cosmos-sdk/codec/types"
// "github.com/cosmos/cosmos-sdk/store" "github.com/ethereum/go-ethereum/common"
// sdkstore "github.com/cosmos/cosmos-sdk/store/types" "github.com/ethereum/go-ethereum/consensus/ethash"
// sdk "github.com/cosmos/cosmos-sdk/types" ethcore "github.com/ethereum/go-ethereum/core"
// authkeeper "github.com/cosmos/cosmos-sdk/x/auth/keeper" ethtypes "github.com/ethereum/go-ethereum/core/types"
// authtypes "github.com/cosmos/cosmos-sdk/x/auth/types" ethvm "github.com/ethereum/go-ethereum/core/vm"
// bankkeeper "github.com/cosmos/cosmos-sdk/x/bank/keeper" "github.com/ethereum/go-ethereum/crypto"
// banktypes "github.com/cosmos/cosmos-sdk/x/bank/types" ethparams "github.com/ethereum/go-ethereum/params"
// paramkeeper "github.com/cosmos/cosmos-sdk/x/params/keeper" ethrlp "github.com/ethereum/go-ethereum/rlp"
// paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
// stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper" "github.com/tendermint/tendermint/abci/types"
// stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types" "github.com/tendermint/tendermint/crypto/tmhash"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
// "github.com/tharsis/ethermint/encoding/codec" tmversion "github.com/tendermint/tendermint/proto/tendermint/version"
// "github.com/tharsis/ethermint/types" "github.com/tendermint/tendermint/version"
// evmkeeper "github.com/tharsis/ethermint/x/evm/keeper" "github.com/tharsis/ethermint/crypto/ethsecp256k1"
// evmtypes "github.com/tharsis/ethermint/x/evm/types" )
// "github.com/ethereum/go-ethereum/common" var (
// "github.com/ethereum/go-ethereum/consensus/ethash" flagBlockchain string
// ethcore "github.com/ethereum/go-ethereum/core"
// ethtypes "github.com/ethereum/go-ethereum/core/types" rewardBig8 = big.NewInt(8)
// ethvm "github.com/ethereum/go-ethereum/core/vm" rewardBig32 = big.NewInt(32)
// "github.com/ethereum/go-ethereum/crypto" )
// ethparams "github.com/ethereum/go-ethereum/params"
// ethrlp "github.com/ethereum/go-ethereum/rlp" func init() {
flag.StringVar(&flagBlockchain, "blockchain", "blockchain", "ethereum block export file (blocks to import)")
// tmlog "github.com/tendermint/tendermint/libs/log" testing.Init()
// tmproto "github.com/tendermint/tendermint/proto/tendermint/types" flag.Parse()
// dbm "github.com/tendermint/tm-db" }
// )
type ImporterTestSuite struct {
// TODO: update and rewrite as testing suite with app. suite.Suite
// var ( app *app.EthermintApp
// flagDataDir string ctx sdk.Context
// flagBlockchain string }
// flagCPUProfile string
/// DoSetupTest setup test environment, it uses`require.TestingT` to support both `testing.T` and `testing.B`.
// genInvestor = common.HexToAddress("0x756F45E3FA69347A9A973A725E3C98bC4db0b5a0") func (suite *ImporterTestSuite) DoSetupTest(t require.TestingT) {
checkTx := false
// logger = tmlog.NewNopLogger() suite.app = app.Setup(checkTx, nil)
// consensus key
// rewardBig8 = big.NewInt(8) priv, err := ethsecp256k1.GenerateKey()
// rewardBig32 = big.NewInt(32) require.NoError(t, err)
// ) consAddress := sdk.ConsAddress(priv.PubKey().Address())
suite.ctx = suite.app.BaseApp.NewContext(checkTx, tmproto.Header{
// func init() { Height: 1,
// flag.StringVar(&flagCPUProfile, "cpu-profile", "", "write CPU profile") ChainID: "ethermint_9000-1",
// flag.StringVar(&flagDataDir, "datadir", "", "test data directory for state storage") Time: time.Now().UTC(),
// flag.StringVar(&flagBlockchain, "blockchain", "blockchain", "ethereum block export file (blocks to import)") ProposerAddress: consAddress.Bytes(),
// testing.Init() Version: tmversion.Consensus{
// flag.Parse() Block: version.BlockProtocol,
// } },
LastBlockId: tmproto.BlockID{
// func newTestCodec() (sdkcodec.BinaryMarshaler, *sdkcodec.LegacyAmino) { Hash: tmhash.Sum([]byte("block_id")),
// interfaceRegistry := codectypes.NewInterfaceRegistry() PartSetHeader: tmproto.PartSetHeader{
// cdc := sdkcodec.NewProtoCodec(interfaceRegistry) Total: 11,
// amino := sdkcodec.NewLegacyAmino() Hash: tmhash.Sum([]byte("partset_header")),
},
// sdk.RegisterLegacyAminoCodec(amino) },
AppHash: tmhash.Sum([]byte("app")),
// codec.RegisterInterfaces(interfaceRegistry) DataHash: tmhash.Sum([]byte("data")),
EvidenceHash: tmhash.Sum([]byte("evidence")),
// return cdc, amino ValidatorsHash: tmhash.Sum([]byte("validators")),
// } NextValidatorsHash: tmhash.Sum([]byte("next_validators")),
ConsensusHash: tmhash.Sum([]byte("consensus")),
// func cleanup() { LastResultsHash: tmhash.Sum([]byte("last_result")),
// fmt.Println("cleaning up test execution...") })
// os.RemoveAll(flagDataDir) }
// if flagCPUProfile != "" { func (suite *ImporterTestSuite) SetupTest() {
// pprof.StopCPUProfile() suite.DoSetupTest(suite.T())
// } }
// }
func TestImporterTestSuite(t *testing.T) {
// func trapSignals() { suite.Run(t, new(ImporterTestSuite))
// sigs := make(chan os.Signal, 1) }
// signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
func (suite *ImporterTestSuite) TestImportBlocks() {
// go func() { chainContext := NewChainContext()
// <-sigs chainConfig := ethparams.MainnetChainConfig
// cleanup() vmConfig := ethvm.Config{}
// os.Exit(1)
// }() // open blockchain export file
// } blockchainInput, err := os.Open(flagBlockchain)
suite.Require().Nil(err)
//
// func createAndTestGenesis(t *testing.T, cms sdk.CommitMultiStore, ak authkeeper.AccountKeeper, bk bankkeeper.Keeper, evmKeeper *evmkeeper.Keeper) { defer func() {
// genBlock := ethcore.DefaultGenesisBlock() err := blockchainInput.Close()
// ms := cms.CacheMultiStore() suite.Require().NoError(err)
// ctx := sdk.NewContext(ms, tmproto.Header{}, false, logger) }()
// evmKeeper.WithContext(ctx)
stream := ethrlp.NewStream(blockchainInput, 0)
// // Set the default Ethermint parameters to the parameter keeper store startTime := time.Now()
// evmKeeper.SetParams(ctx, evmtypes.DefaultParams())
var block ethtypes.Block
// // sort the addresses and insertion of key/value pairs matters
// genAddrs := make([]string, len(genBlock.Alloc)) for {
// i := 0 err := stream.Decode(&block)
// for addr := range genBlock.Alloc { if err == io.EOF {
// genAddrs[i] = addr.String() break
// i++ }
// }
suite.Require().NoError(err, "failed to decode block")
// sort.Strings(genAddrs)
var (
// for _, addrStr := range genAddrs { usedGas = new(uint64)
// addr := common.HexToAddress(addrStr) gp = new(ethcore.GasPool).AddGas(block.GasLimit())
// acc := genBlock.Alloc[addr] )
header := block.Header()
// evmKeeper.AddBalance(addr, acc.Balance) chainContext.Coinbase = header.Coinbase
// evmKeeper.SetCode(addr, acc.Code)
// evmKeeper.SetNonce(addr, acc.Nonce) chainContext.SetHeader(block.NumberU64(), header)
tmheader := suite.ctx.BlockHeader()
// for key, value := range acc.Storage { // fix due to that begin block can't have height 0
// evmKeeper.SetState(addr, key, value) tmheader.Height = int64(block.NumberU64()) + 1
// } suite.app.BeginBlock(types.RequestBeginBlock{
// } Header: tmheader,
})
// // get balance of one of the genesis account having 400 ETH ctx := suite.app.NewContext(false, tmheader)
// b := evmKeeper.GetBalance(genInvestor) ctx = ctx.WithBlockHeight(tmheader.Height)
// require.Equal(t, "200000000000000000000", b.String()) suite.app.EvmKeeper.WithContext(ctx)
// // persist multi-store cache state if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
// ms.Write() applyDAOHardFork(suite.app.EvmKeeper)
}
// // persist multi-store root state
// cms.Commit() for _, tx := range block.Transactions() {
// // verify account mapper state receipt, gas, err := applyTransaction(
// genAcc := ak.GetAccount(ctx, sdk.AccAddress(genInvestor.Bytes())) chainConfig, chainContext, nil, gp, suite.app.EvmKeeper, header, tx, usedGas, vmConfig,
// require.NotNil(t, genAcc) )
suite.Require().NoError(err, "failed to apply tx at block %d; tx: %X; gas %d; receipt:%v", block.NumberU64(), tx.Hash(), gas, receipt)
// evmDenom := evmKeeper.GetParams(ctx).EvmDenom suite.Require().NotNil(receipt)
// balance := bk.GetBalance(ctx, genAcc.GetAddress(), evmDenom) }
// require.Equal(t, sdk.NewIntFromBigInt(b), balance.Amount)
// } // apply mining rewards
accumulateRewards(chainConfig, suite.app.EvmKeeper, header, block.Uncles())
// func TestImportBlocks(t *testing.T) {
// if flagDataDir == "" { // simulate BaseApp EndBlocker commitment
// flagDataDir = os.TempDir() endBR := types.RequestEndBlock{Height: tmheader.Height}
// } suite.app.EndBlocker(ctx, endBR)
suite.app.Commit()
// if flagCPUProfile != "" {
// f, err := os.Create(flagCPUProfile) // block debugging output
// require.NoError(t, err, "failed to create CPU profile") if block.NumberU64() > 0 && block.NumberU64()%1000 == 0 {
fmt.Printf("processed block: %d (time so far: %v)\n", block.NumberU64(), time.Since(startTime))
// err = pprof.StartCPUProfile(f) }
// require.NoError(t, err, "failed to start CPU profile") }
// } }
// db, err := dbm.NewDB("state_test"+uuid.New().String(), dbm.GoLevelDBBackend, flagDataDir) // accumulateRewards credits the coinbase of the given block with the mining
// require.NoError(t, err) // reward. The total reward consists of the static block reward and rewards for
// included uncles. The coinbase of each uncle block is also rewarded.
// defer cleanup() func accumulateRewards(
// trapSignals() config *ethparams.ChainConfig, evmKeeper *evmkeeper.Keeper,
header *ethtypes.Header, uncles []*ethtypes.Header,
// cdc, amino := newTestCodec() ) {
// select the correct block reward based on chain progression
// cms := store.NewCommitMultiStore(db) blockReward := ethash.FrontierBlockReward
if config.IsByzantium(header.Number) {
// authStoreKey := sdk.NewKVStoreKey(authtypes.StoreKey) blockReward = ethash.ByzantiumBlockReward
// bankStoreKey := sdk.NewKVStoreKey(banktypes.StoreKey) }
// stakingStoreKey := sdk.NewKVStoreKey(stakingtypes.StoreKey)
// evmStoreKey := sdk.NewKVStoreKey(evmtypes.StoreKey) // accumulate the rewards for the miner and any included uncles
// paramsStoreKey := sdk.NewKVStoreKey(paramtypes.StoreKey) reward := new(big.Int).Set(blockReward)
// evmTransientStoreKey := sdk.NewTransientStoreKey(evmtypes.TransientKey) r := new(big.Int)
// paramsTransientStoreKey := sdk.NewTransientStoreKey(paramtypes.TStoreKey)
for _, uncle := range uncles {
// // mount stores r.Add(uncle.Number, rewardBig8)
// keys := []*sdk.KVStoreKey{authStoreKey, bankStoreKey, stakingStoreKey, evmStoreKey, paramsStoreKey} r.Sub(r, header.Number)
// tkeys := []*sdk.TransientStoreKey{paramsTransientStoreKey, evmTransientStoreKey} r.Mul(r, blockReward)
// for _, key := range keys { r.Div(r, rewardBig8)
// cms.MountStoreWithDB(key, sdk.StoreTypeIAVL, nil) evmKeeper.AddBalance(uncle.Coinbase, r)
// } r.Div(blockReward, rewardBig32)
reward.Add(reward, r)
// for _, tkey := range tkeys { }
// cms.MountStoreWithDB(tkey, sdk.StoreTypeTransient, nil)
// } evmKeeper.AddBalance(header.Coinbase, reward)
}
// paramsKeeper := paramkeeper.NewKeeper(cdc, amino, paramsStoreKey, paramsTransientStoreKey)
// ApplyDAOHardFork modifies the state database according to the DAO hard-fork
// // Set specific subspaces // rules, transferring all balances of a set of DAO accounts to a single refund
// authSubspace := paramsKeeper.Subspace(authtypes.ModuleName) // contract.
// bankSubspace := paramsKeeper.Subspace(banktypes.ModuleName) // Code is pulled from go-ethereum 1.9 because the StateDB interface does not include the
// stakingSubspace := paramsKeeper.Subspace(stakingtypes.ModuleName) // SetBalance function implementation
// evmSubspace := paramsKeeper.Subspace(evmtypes.ModuleName).WithKeyTable(evmtypes.ParamKeyTable()) // Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/consensus/misc/dao.go#L74
func applyDAOHardFork(evmKeeper *evmkeeper.Keeper) {
// // create keepers // Retrieve the contract to refund balances into
// ak := authkeeper.NewAccountKeeper(cdc, authStoreKey, authSubspace, types.ProtoAccount, nil) if !evmKeeper.Exist(ethparams.DAORefundContract) {
// bk := bankkeeper.NewBaseKeeper(cdc, bankStoreKey, ak, bankSubspace, nil) evmKeeper.CreateAccount(ethparams.DAORefundContract)
// sk := stakingkeeper.NewKeeper(cdc, stakingStoreKey, ak, bk, stakingSubspace) }
// evmKeeper := evmkeeper.NewKeeper(cdc, evmStoreKey, evmTransientStoreKey, evmSubspace, ak, bk, sk)
// Move every DAO account and extra-balance account funds into the refund contract
// cms.SetPruning(sdkstore.PruneNothing) for _, addr := range ethparams.DAODrainList() {
evmKeeper.AddBalance(ethparams.DAORefundContract, evmKeeper.GetBalance(addr))
// // load latest version (root) }
// err = cms.LoadLatestVersion() }
// require.NoError(t, err)
// ApplyTransaction attempts to apply a transaction to the given state database
// // set and test genesis block // and uses the input parameters for its environment. It returns the receipt
// createAndTestGenesis(t, cms, ak, bk, evmKeeper) // for the transaction, gas used and an error if the transaction failed,
// indicating the block was invalid.
// // open blockchain export file // Function is also pulled from go-ethereum 1.9 because of the incompatible usage
// blockchainInput, err := os.Open(flagBlockchain) // Ref: https://github.com/ethereum/go-ethereum/blob/52f2461774bcb8cdd310f86b4bc501df5b783852/core/state_processor.go#L88
// require.Nil(t, err) func applyTransaction(
config *ethparams.ChainConfig, bc ethcore.ChainContext, author *common.Address,
// defer func() { gp *ethcore.GasPool, evmKeeper *evmkeeper.Keeper, header *ethtypes.Header,
// err := blockchainInput.Close() tx *ethtypes.Transaction, usedGas *uint64, cfg ethvm.Config,
// require.NoError(t, err) ) (*ethtypes.Receipt, uint64, error) {
// }() msg, err := tx.AsMessage(ethtypes.MakeSigner(config, header.Number), sdk.ZeroInt().BigInt())
if err != nil {
// // ethereum mainnet config return nil, 0, err
// chainContext := NewChainContext() }
// vmConfig := ethvm.Config{}
// chainConfig := ethparams.MainnetChainConfig // Create a new context to be used in the EVM environment
blockCtx := ethcore.NewEVMBlockContext(header, bc, author)
// // create RLP stream for exported blocks txCtx := ethcore.NewEVMTxContext(msg)
// stream := ethrlp.NewStream(blockchainInput, 0)
// startTime := time.Now() // Create a new environment which holds all relevant information
// about the transaction and calling mechanisms.
// var block ethtypes.Block vmenv := ethvm.NewEVM(blockCtx, txCtx, evmKeeper, config, cfg)
// for {
// err = stream.Decode(&block) // Apply the transaction to the current state (included in the env)
// if err == io.EOF { execResult, err := ethcore.ApplyMessage(vmenv, msg, gp)
// break if err != nil {
// } // NOTE: ignore vm execution error (eg: tx out of gas at block 51169) as we care only about state transition errors
return &ethtypes.Receipt{}, 0, nil
// require.NoError(t, err, "failed to decode block") }
// var ( root := common.Hash{}.Bytes()
// usedGas = new(uint64) *usedGas += execResult.UsedGas
// gp = new(ethcore.GasPool).AddGas(block.GasLimit())
// ) // 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.
// header := block.Header() receipt := ethtypes.NewReceipt(root, execResult.Failed(), *usedGas)
// chainContext.Coinbase = header.Coinbase receipt.TxHash = tx.Hash()
receipt.GasUsed = execResult.UsedGas
// chainContext.SetHeader(block.NumberU64(), header)
// if the transaction created a contract, store the creation address in the receipt.
// // Create a cached-wrapped multi-store based on the commit multi-store and if msg.To() == nil {
// // create a new context based off of that. receipt.ContractAddress = crypto.CreateAddress(vmenv.TxContext.Origin, tx.Nonce())
// ms := cms.CacheMultiStore() }
// ctx := sdk.NewContext(ms, tmproto.Header{}, false, logger)
// ctx = ctx.WithBlockHeight(int64(block.NumberU64())) // Set the receipt logs and create a bloom for filtering
// evmKeeper.WithContext(ctx) receipt.Logs = evmKeeper.GetTxLogsTransient(tx.Hash())
receipt.Bloom = ethtypes.CreateBloom(ethtypes.Receipts{receipt})
// if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 { receipt.BlockHash = header.Hash()
// applyDAOHardFork(evmKeeper) receipt.BlockNumber = header.Number
// } receipt.TransactionIndex = uint(evmKeeper.GetTxIndexTransient())
// for _, tx := range block.Transactions() { return receipt, execResult.UsedGas, err
}
// receipt, gas, err := applyTransaction(
// chainConfig, chainContext, nil, gp, evmKeeper, 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, evmKeeper, header, block.Uncles())
// // 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))
// }
// }
// }
// // 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, evmKeeper *evmkeeper.Keeper,
// 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)
// evmKeeper.AddBalance(uncle.Coinbase, r)
// r.Div(blockReward, rewardBig32)
// reward.Add(reward, r)
// }
// evmKeeper.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(evmKeeper *evmkeeper.Keeper) {
// // Retrieve the contract to refund balances into
// if !evmKeeper.Exist(ethparams.DAORefundContract) {
// evmKeeper.CreateAccount(ethparams.DAORefundContract)
// }
// // Move every DAO account and extra-balance account funds into the refund contract
// for _, addr := range ethparams.DAODrainList() {
// evmKeeper.AddBalance(ethparams.DAORefundContract, evmKeeper.GetBalance(addr))
// }
// }
// // 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 *common.Address,
// gp *ethcore.GasPool, evmKeeper *evmkeeper.Keeper, 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
// blockCtx := ethcore.NewEVMBlockContext(header, bc, author)
// txCtx := ethcore.NewEVMTxContext(msg)
// // Create a new environment which holds all relevant information
// // about the transaction and calling mechanisms.
// vmenv := ethvm.NewEVM(blockCtx, txCtx, evmKeeper, config, cfg)
// // Apply the transaction to the current state (included in the env)
// execResult, err := ethcore.ApplyMessage(vmenv, msg, gp)
// if err != nil {
// // NOTE: ignore vm execution error (eg: tx out of gas at block 51169) as we care only about state transition errors
// return &ethtypes.Receipt{}, 0, nil
// }
// if err != nil {
// return nil, execResult.UsedGas, err
// }
// root := common.Hash{}.Bytes()
// *usedGas += execResult.UsedGas
// // 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, execResult.Failed(), *usedGas)
// receipt.TxHash = tx.Hash()
// receipt.GasUsed = execResult.UsedGas
// // if the transaction created a contract, store the creation address in the receipt.
// if msg.To() == nil {
// receipt.ContractAddress = crypto.CreateAddress(vmenv.TxContext.Origin, tx.Nonce())
// }
// // Set the receipt logs and create a bloom for filtering
// receipt.Logs = evmKeeper.GetTxLogs(tx.Hash())
// receipt.Bloom = ethtypes.CreateBloom(ethtypes.Receipts{receipt})
// receipt.BlockHash = header.Hash()
// receipt.BlockNumber = header.Number
// receipt.TransactionIndex = uint(evmKeeper.GetTxIndexTransient())
// return receipt, execResult.UsedGas, err
// }