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Remove old test importer

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This commit is contained in:
Aleksandr Bezobchuk 2018-10-22 22:46:29 -04:00
parent 13c627f6ca
commit c0489c86da
5 changed files with 0 additions and 445 deletions
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8
test/importer/doc.go
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@ -1,8 +0,0 @@
// The implementation below is to be considered highly unstable and a continual
// WIP. It is a means to replicate and test replaying Ethereum transactions
// using the Cosmos SDK and the EVM. The ultimate result will be what is known
// as Ethermint.
//
// Note: Some code is directly copied from go-ethereum.
package importer

247
test/importer/importer.go
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package importer
import (
"bytes"
"encoding/binary"
"encoding/json"
"fmt"
"io"
"os"
"path"
"time"
"github.com/cosmos/ethermint/core"
"github.com/cosmos/ethermint/state"
ethcommon "github.com/ethereum/go-ethereum/common"
ethmisc "github.com/ethereum/go-ethereum/consensus/misc"
ethcore "github.com/ethereum/go-ethereum/core"
ethstate "github.com/ethereum/go-ethereum/core/state"
ethtypes "github.com/ethereum/go-ethereum/core/types"
ethvm "github.com/ethereum/go-ethereum/core/vm"
ethparams "github.com/ethereum/go-ethereum/params"
ethrlp "github.com/ethereum/go-ethereum/rlp"
)
var (
miner501 = ethcommon.HexToAddress("0x35e8e5dC5FBd97c5b421A80B596C030a2Be2A04D")
genInvestor = ethcommon.HexToAddress("0x756F45E3FA69347A9A973A725E3C98bC4db0b5a0")
)
// Importer implements a structure to facilitate testing of importing mainnet
// Ethereum blocks and transactions using the Cosmos SDK components and the
// EVM.
type Importer struct {
EthermintDB *state.Database
BlockchainFile string
Datadir string
InterruptCh <-chan bool
}
// Import performs an import given an Importer that has a Geth stateDB
// implementation and a blockchain exported file.
// nolint
func (imp *Importer) Import() {
// only create genesis if it is a brand new database
if imp.EthermintDB.LatestVersion() == 0 {
// start with empty root hash (i.e. empty state)
gethStateDB, err := ethstate.New(ethcommon.Hash{}, imp.EthermintDB)
if err != nil {
panic(fmt.Sprintf("failed to instantiate geth state.StateDB: %v", err))
}
genBlock := ethcore.DefaultGenesisBlock()
for addr, account := range genBlock.Alloc {
gethStateDB.AddBalance(addr, account.Balance)
gethStateDB.SetCode(addr, account.Code)
gethStateDB.SetNonce(addr, account.Nonce)
for key, value := range account.Storage {
gethStateDB.SetState(addr, key, value)
}
}
// get balance of one of the genesis account having 200 ETH
b := gethStateDB.GetBalance(genInvestor)
fmt.Printf("balance of %s: %s\n", genInvestor.String(), b)
// commit the geth stateDB with 'false' to delete empty objects
genRoot, err := gethStateDB.Commit(false)
if err != nil {
panic(err)
}
commitID := imp.EthermintDB.Commit()
fmt.Printf("commitID after genesis: %v\n", commitID)
fmt.Printf("genesis state root hash: %x\n", genRoot[:])
}
// file with blockchain data exported from geth by using "geth exportdb"
// command.
input, err := os.Open(imp.BlockchainFile)
if err != nil {
panic(err)
}
defer input.Close()
// ethereum mainnet config
chainConfig := ethparams.MainnetChainConfig
// create RLP stream for exported blocks
stream := ethrlp.NewStream(input, 0)
var (
block ethtypes.Block
root500 ethcommon.Hash // root hash after block 500
root501 ethcommon.Hash // root hash after block 501
)
var prevRoot ethcommon.Hash
binary.BigEndian.PutUint64(prevRoot[:8], uint64(imp.EthermintDB.LatestVersion()))
imp.EthermintDB.Tracing = true
chainContext := core.NewChainContext()
vmConfig := ethvm.Config{}
n := 0
startTime := time.Now()
interrupt := false
var lastSkipped uint64
for !interrupt {
if err = stream.Decode(&block); err == io.EOF {
err = nil
break
} else if err != nil {
panic(fmt.Errorf("failed to decode at block %d: %s", block.NumberU64(), err))
}
// don't import blocks already imported
if block.NumberU64() < uint64(imp.EthermintDB.LatestVersion()) {
lastSkipped = block.NumberU64()
continue
}
if lastSkipped > 0 {
fmt.Printf("skipped blocks up to %d\n", lastSkipped)
lastSkipped = 0
}
header := block.Header()
chainContext.Coinbase = header.Coinbase
chainContext.SetHeader(block.NumberU64(), header)
gethStateDB, err := ethstate.New(prevRoot, imp.EthermintDB)
if err != nil {
panic(fmt.Errorf("failed to instantiate geth state.StateDB at block %d: %v", block.NumberU64(), err))
}
var (
receipts ethtypes.Receipts
usedGas = new(uint64)
allLogs []*ethtypes.Log
gp = new(ethcore.GasPool).AddGas(block.GasLimit())
)
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
ethmisc.ApplyDAOHardFork(gethStateDB)
}
for i, tx := range block.Transactions() {
gethStateDB.Prepare(tx.Hash(), block.Hash(), i)
txHash := tx.Hash()
if bytes.Equal(txHash[:], ethcommon.FromHex("0xc438cfcc3b74a28741bda361032f1c6362c34aa0e1cedff693f31ec7d6a12717")) {
vmConfig.Tracer = ethvm.NewStructLogger(&ethvm.LogConfig{})
vmConfig.Debug = true
}
receipt, _, err := ethcore.ApplyTransaction(chainConfig, chainContext, nil, gp, gethStateDB, header, tx, usedGas, vmConfig)
if vmConfig.Tracer != nil {
w, err := os.Create(path.Join(imp.Datadir, "structlogs.txt"))
if err != nil {
panic(fmt.Sprintf("failed to create file for VM tracing: %v", err))
}
encoder := json.NewEncoder(w)
logs := FormatLogs(vmConfig.Tracer.(*ethvm.StructLogger).StructLogs())
if err := encoder.Encode(logs); err != nil {
panic(err)
}
if err := w.Close(); err != nil {
panic(err)
}
vmConfig.Debug = false
vmConfig.Tracer = nil
}
if err != nil {
panic(fmt.Errorf("at block %d, tx %x: %v", block.NumberU64(), tx.Hash(), err))
}
receipts = append(receipts, receipt)
allLogs = append(allLogs, receipt.Logs...)
}
// apply mining rewards to the geth stateDB
accumulateRewards(chainConfig, gethStateDB, header, block.Uncles())
// commit block in geth
prevRoot, err = gethStateDB.Commit(chainConfig.IsEIP158(block.Number()))
if err != nil {
panic(fmt.Errorf("at block %d: %v", block.NumberU64(), err))
}
// commit block in Ethermint
imp.EthermintDB.Commit()
switch block.NumberU64() {
case 500:
root500 = prevRoot
case 501:
root501 = prevRoot
}
n++
if (n % 10000) == 0 {
fmt.Printf("processed %d blocks, time so far: %v\n", n, time.Since(startTime))
}
// Check for interrupts
select {
case interrupt = <-imp.InterruptCh:
fmt.Println("interrupted, please wait for cleanup...")
default:
}
}
fmt.Printf("processed %d blocks\n", n)
imp.EthermintDB.Tracing = true
// try to create a new geth stateDB from root of the block 500
fmt.Printf("root at block 500: %x\n", root500[:])
state500, err := ethstate.New(root500, imp.EthermintDB)
if err != nil {
panic(err)
}
miner501BalanceAt500 := state500.GetBalance(miner501)
state501, err := ethstate.New(root501, imp.EthermintDB)
if err != nil {
panic(err)
}
miner501BalanceAt501 := state501.GetBalance(miner501)
fmt.Printf("investor's balance after block 500: %d\n", state500.GetBalance(genInvestor))
fmt.Printf("miner of block 501's balance after block 500: %d\n", miner501BalanceAt500)
fmt.Printf("miner of block 501's balance after block 501: %d\n", miner501BalanceAt501)
}

66
test/importer/log.go
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@ -1,66 +0,0 @@
package importer
import (
"fmt"
ethmath "github.com/ethereum/go-ethereum/common/math"
ethvm "github.com/ethereum/go-ethereum/core/vm"
)
// StructLogRes stores a structured log emitted by the EVM while replaying a
// transaction in debug mode.
type StructLogRes struct {
Pc uint64 `json:"pc"`
Op string `json:"op"`
Gas uint64 `json:"gas"`
GasCost uint64 `json:"gasCost"`
Depth int `json:"depth"`
Error error `json:"error,omitempty"`
Stack *[]string `json:"stack,omitempty"`
Memory *[]string `json:"memory,omitempty"`
Storage *map[string]string `json:"storage,omitempty"`
}
// FormatLogs formats EVM returned structured logs for json output.
func FormatLogs(logs []ethvm.StructLog) []StructLogRes {
formatted := make([]StructLogRes, len(logs))
for index, trace := range logs {
formatted[index] = StructLogRes{
Pc: trace.Pc,
Op: trace.Op.String(),
Gas: trace.Gas,
GasCost: trace.GasCost,
Depth: trace.Depth,
Error: trace.Err,
}
if trace.Stack != nil {
stack := make([]string, len(trace.Stack))
for i, stackValue := range trace.Stack {
stack[i] = fmt.Sprintf("%x", ethmath.PaddedBigBytes(stackValue, 32))
}
formatted[index].Stack = &stack
}
if trace.Memory != nil {
memory := make([]string, 0, (len(trace.Memory)+31)/32)
for i := 0; i+32 <= len(trace.Memory); i += 32 {
memory = append(memory, fmt.Sprintf("%x", trace.Memory[i:i+32]))
}
formatted[index].Memory = &memory
}
if trace.Storage != nil {
storage := make(map[string]string)
for i, storageValue := range trace.Storage {
storage[fmt.Sprintf("%x", i)] = fmt.Sprintf("%x", storageValue)
}
formatted[index].Storage = &storage
}
}
return formatted
}

43
test/importer/utils.go
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@ -1,43 +0,0 @@
package importer
import (
"math/big"
"github.com/ethereum/go-ethereum/consensus/ethash"
ethstate "github.com/ethereum/go-ethereum/core/state"
ethtypes "github.com/ethereum/go-ethereum/core/types"
ethparams "github.com/ethereum/go-ethereum/params"
)
// Some weird constants to avoid constant memory allocs for them.
var (
big8 = big.NewInt(8)
big32 = big.NewInt(32)
)
// 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, state ethstate.StateDB, 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, big8)
r.Sub(r, header.Number)
r.Mul(r, blockReward)
r.Div(r, big8)
state.AddBalance(uncle.Coinbase, r)
r.Div(blockReward, big32)
reward.Add(reward, r)
}
state.AddBalance(header.Coinbase, reward)
}

81
test/run.go
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@ -1,81 +0,0 @@
package main
import (
"flag"
"fmt"
"os"
"os/signal"
"path"
"runtime/pprof"
"syscall"
"github.com/cosmos/cosmos-sdk/store"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/ethermint/state"
"github.com/cosmos/ethermint/test/importer"
"github.com/cosmos/ethermint/types"
dbm "github.com/tendermint/tendermint/libs/db"
)
var (
cpuprofile = flag.String("cpu-profile", "", "write cpu profile `file`")
blockchain = flag.String("blockchain", "data/blockchain", "file containing blocks to load")
datadir = flag.String("datadir", path.Join(os.Getenv("HOME"), ".ethermint"), "directory for ethermint data")
cachesize = flag.Int("cachesize", 1024*1024, "number of key-value pairs for the state stored in memory")
)
func main() {
flag.Parse()
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
fmt.Printf("could not create CPU profile: %v\n", err)
return
}
if err := pprof.StartCPUProfile(f); err != nil {
fmt.Printf("could not start CPU profile: %v\n", err)
return
}
defer pprof.StopCPUProfile()
}
sigs := make(chan os.Signal, 1)
interruptCh := make(chan bool, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
go func() {
<-sigs
interruptCh <- true
}()
stateDB := dbm.NewDB("state", dbm.LevelDBBackend, *datadir)
codeDB := dbm.NewDB("code", dbm.LevelDBBackend, *datadir)
cms := store.NewCommitMultiStore(stateDB)
cms.SetPruning(sdk.PruneNothing)
cms.MountStoreWithDB(types.StoreKeyAccount, sdk.StoreTypeIAVL, nil)
cms.MountStoreWithDB(types.StoreKeyStorage, sdk.StoreTypeIAVL, nil)
if err := cms.LoadLatestVersion(); err != nil {
panic(fmt.Sprintf("failed to load state store: %v", err))
}
ethermintDB, err := state.NewDatabase(cms, codeDB, *cachesize)
if err != nil {
panic(fmt.Sprintf("failed to initialize geth Database: %v", err))
}
importer := importer.Importer{
EthermintDB: ethermintDB,
BlockchainFile: *blockchain,
Datadir: *datadir,
InterruptCh: interruptCh,
}
importer.Import()
}