status-go/services/wallet/transfer/downloader.go

461 lines
14 KiB
Go

package transfer
import (
"context"
"encoding/binary"
"errors"
"math/big"
"time"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/status-im/status-go/rpc/chain"
w_common "github.com/status-im/status-go/services/wallet/common"
)
func getLogSubTxID(log types.Log) common.Hash {
// Get unique ID by using TxHash and log index
index := [4]byte{}
binary.BigEndian.PutUint32(index[:], uint32(log.Index))
return crypto.Keccak256Hash(log.TxHash.Bytes(), index[:])
}
var (
zero = big.NewInt(0)
one = big.NewInt(1)
two = big.NewInt(2)
)
// Partial transaction info obtained by ERC20Downloader.
// A PreloadedTransaction represents a Transaction which contains one or more
// ERC20/ERC721 transfer events.
// To be converted into one or many Transfer objects post-indexing.
type PreloadedTransaction struct {
NetworkID uint64
Type w_common.Type `json:"type"`
ID common.Hash `json:"-"`
Address common.Address `json:"address"`
BlockNumber *big.Int `json:"blockNumber"`
BlockHash common.Hash `json:"blockhash"`
Loaded bool
// From is derived from tx signature in order to offload this computation from UI component.
From common.Address `json:"from"`
// Log that was used to generate preloaded transaction.
Log *types.Log `json:"log"`
BaseGasFees string
}
// Transfer stores information about transfer.
// A Transfer represents a plain ETH transfer or some token activity inside a Transaction
type Transfer struct {
Type w_common.Type `json:"type"`
ID common.Hash `json:"-"`
Address common.Address `json:"address"`
BlockNumber *big.Int `json:"blockNumber"`
BlockHash common.Hash `json:"blockhash"`
Timestamp uint64 `json:"timestamp"`
Transaction *types.Transaction `json:"transaction"`
Loaded bool
NetworkID uint64
// From is derived from tx signature in order to offload this computation from UI component.
From common.Address `json:"from"`
Receipt *types.Receipt `json:"receipt"`
// Log that was used to generate erc20 transfer. Nil for eth transfer.
Log *types.Log `json:"log"`
BaseGasFees string
// Internal field that is used to track multi-transaction transfers.
MultiTransactionID MultiTransactionIDType `json:"multi_transaction_id"`
}
// ETHDownloader downloads regular eth transfers.
type ETHDownloader struct {
chainClient *chain.ClientWithFallback
accounts []common.Address
signer types.Signer
db *Database
}
var errLogsDownloaderStuck = errors.New("logs downloader stuck")
func (d *ETHDownloader) GetTransfersByNumber(ctx context.Context, number *big.Int) ([]Transfer, error) {
blk, err := d.chainClient.BlockByNumber(ctx, number)
if err != nil {
return nil, err
}
rst, err := d.getTransfersInBlock(ctx, blk, d.accounts)
if err != nil {
return nil, err
}
return rst, err
}
// Only used by status-mobile
func getTransferByHash(ctx context.Context, client *chain.ClientWithFallback, signer types.Signer, address common.Address, hash common.Hash) (*Transfer, error) {
transaction, _, err := client.TransactionByHash(ctx, hash)
if err != nil {
return nil, err
}
receipt, err := client.TransactionReceipt(ctx, hash)
if err != nil {
return nil, err
}
eventType, transactionLog := w_common.GetFirstEvent(receipt.Logs)
transactionType := w_common.EventTypeToSubtransactionType(eventType)
from, err := types.Sender(signer, transaction)
if err != nil {
return nil, err
}
baseGasFee, err := client.GetBaseFeeFromBlock(big.NewInt(int64(transactionLog.BlockNumber)))
if err != nil {
return nil, err
}
transfer := &Transfer{
Type: transactionType,
ID: hash,
Address: address,
BlockNumber: receipt.BlockNumber,
BlockHash: receipt.BlockHash,
Timestamp: uint64(time.Now().Unix()),
Transaction: transaction,
From: from,
Receipt: receipt,
Log: transactionLog,
BaseGasFees: baseGasFee,
}
return transfer, nil
}
func (d *ETHDownloader) getTransfersInBlock(ctx context.Context, blk *types.Block, accounts []common.Address) (rst []Transfer, err error) {
startTs := time.Now()
for _, address := range accounts {
// During block discovery, we should have populated the DB with 1 item per Transaction containing
// erc20/erc721 transfers
transactionsToLoad, err := d.db.GetTransactionsToLoad(d.chainClient.ChainID, address, blk.Number())
if err != nil {
return nil, err
}
areSubTxsCheckedForTxHash := make(map[common.Hash]bool)
for _, t := range transactionsToLoad {
subtransactions, err := d.subTransactionsFromTransactionHash(ctx, t.Log.TxHash, address)
if err != nil {
log.Error("can't fetch subTxs for erc20/erc721 transfer", "error", err)
return nil, err
}
rst = append(rst, subtransactions...)
areSubTxsCheckedForTxHash[t.Log.TxHash] = true
}
for _, tx := range blk.Transactions() {
if tx.ChainId().Cmp(big.NewInt(0)) != 0 && tx.ChainId().Cmp(d.chainClient.ToBigInt()) != 0 {
log.Info("chain id mismatch", "tx hash", tx.Hash(), "tx chain id", tx.ChainId(), "expected chain id", d.chainClient.ChainID)
continue
}
from, err := types.Sender(d.signer, tx)
if err != nil {
if err == core.ErrTxTypeNotSupported {
log.Error("Tx Type not supported", "tx chain id", tx.ChainId(), "type", tx.Type(), "error", err)
continue
}
return nil, err
}
isPlainTransfer := from == address || (tx.To() != nil && *tx.To() == address)
mustCheckSubTxs := false
if !isPlainTransfer {
// We might miss some subTransactions of interest for some transaction types. We need to check if we
// find the address in the transaction data.
switch tx.Type() {
case types.DynamicFeeTxType, types.OptimismDepositTxType, types.ArbitrumDepositTxType, types.ArbitrumRetryTxType:
mustCheckSubTxs = !areSubTxsCheckedForTxHash[tx.Hash()] && w_common.TxDataContainsAddress(tx.Type(), tx.Data(), address)
}
}
if isPlainTransfer || mustCheckSubTxs {
receipt, err := d.chainClient.TransactionReceipt(ctx, tx.Hash())
if err != nil {
return nil, err
}
baseGasFee, err := d.chainClient.GetBaseFeeFromBlock(blk.Number())
if err != nil {
return nil, err
}
// Since we've already got the receipt, check for subTxs of
// interest in case we haven't already.
if !areSubTxsCheckedForTxHash[tx.Hash()] {
subtransactions, err := d.subTransactionsFromTransactionData(tx, receipt, blk, baseGasFee, address)
if err != nil {
log.Error("can't fetch subTxs for eth transfer", "error", err)
return nil, err
}
rst = append(rst, subtransactions...)
areSubTxsCheckedForTxHash[tx.Hash()] = true
}
// If it's a plain ETH transfer, add it to the list
if isPlainTransfer {
rst = append(rst, Transfer{
Type: w_common.EthTransfer,
NetworkID: tx.ChainId().Uint64(),
ID: tx.Hash(),
Address: address,
BlockNumber: blk.Number(),
BlockHash: receipt.BlockHash,
Timestamp: blk.Time(),
Transaction: tx,
From: from,
Receipt: receipt,
Log: nil,
BaseGasFees: baseGasFee,
MultiTransactionID: NoMultiTransactionID})
}
}
}
}
log.Debug("getTransfersInBlock found", "block", blk.Number(), "len", len(rst), "time", time.Since(startTs))
// TODO(dshulyak) test that balance difference was covered by transactions
return rst, nil
}
// NewERC20TransfersDownloader returns new instance.
func NewERC20TransfersDownloader(client *chain.ClientWithFallback, accounts []common.Address, signer types.Signer) *ERC20TransfersDownloader {
signature := w_common.GetEventSignatureHash(w_common.Erc20_721TransferEventSignature)
return &ERC20TransfersDownloader{
client: client,
accounts: accounts,
signature: signature,
signer: signer,
}
}
// ERC20TransfersDownloader is a downloader for erc20 and erc721 tokens transfers.
// Since both transaction types share the same signature, both will be assigned
// type Erc20Transfer. Until the downloader gets refactored and a migration of the
// database gets implemented, differentiation between erc20 and erc721 will handled
// in the controller.
type ERC20TransfersDownloader struct {
client *chain.ClientWithFallback
accounts []common.Address
// hash of the Transfer event signature
signature common.Hash
// signer is used to derive tx sender from tx signature
signer types.Signer
}
func (d *ERC20TransfersDownloader) paddedAddress(address common.Address) common.Hash {
rst := common.Hash{}
copy(rst[12:], address[:])
return rst
}
func (d *ERC20TransfersDownloader) inboundTopics(address common.Address) [][]common.Hash {
return [][]common.Hash{{d.signature}, {}, {d.paddedAddress(address)}}
}
func (d *ERC20TransfersDownloader) outboundTopics(address common.Address) [][]common.Hash {
return [][]common.Hash{{d.signature}, {d.paddedAddress(address)}, {}}
}
func (d *ETHDownloader) subTransactionsFromTransactionHash(parent context.Context, txHash common.Hash, address common.Address) ([]Transfer, error) {
ctx, cancel := context.WithTimeout(parent, 3*time.Second)
tx, _, err := d.chainClient.TransactionByHash(ctx, txHash)
cancel()
if err != nil {
return nil, err
}
ctx, cancel = context.WithTimeout(parent, 3*time.Second)
receipt, err := d.chainClient.TransactionReceipt(ctx, txHash)
cancel()
if err != nil {
return nil, err
}
ctx, cancel = context.WithTimeout(parent, 3*time.Second)
blk, err := d.chainClient.BlockByHash(ctx, receipt.BlockHash)
cancel()
if err != nil {
return nil, err
}
baseGasFee, err := d.chainClient.GetBaseFeeFromBlock(receipt.BlockNumber)
if err != nil {
return nil, err
}
return d.subTransactionsFromTransactionData(tx, receipt, blk, baseGasFee, address)
}
func (d *ETHDownloader) subTransactionsFromTransactionData(tx *types.Transaction, receipt *types.Receipt, blk *types.Block, baseGasFee string, address common.Address) ([]Transfer, error) {
from, err := types.Sender(d.signer, tx)
if err != nil {
if err == core.ErrTxTypeNotSupported {
return nil, nil
}
return nil, err
}
rst := make([]Transfer, 0, len(receipt.Logs))
for _, log := range receipt.Logs {
eventType := w_common.GetEventType(log)
// Only add ERC20/ERC721 transfers from/to the given account
// Other types of events get always added
mustAppend := false
switch eventType {
case w_common.Erc20TransferEventType:
trFrom, trTo, _ := w_common.ParseErc20TransferLog(log)
if trFrom == address || trTo == address {
mustAppend = true
}
case w_common.Erc721TransferEventType:
trFrom, trTo, _ := w_common.ParseErc721TransferLog(log)
if trFrom == address || trTo == address {
mustAppend = true
}
case w_common.UniswapV2SwapEventType, w_common.UniswapV3SwapEventType:
mustAppend = true
case w_common.HopBridgeTransferSentToL2EventType, w_common.HopBridgeTransferFromL1CompletedEventType:
mustAppend = true
case w_common.HopBridgeWithdrawalBondedEventType, w_common.HopBridgeTransferSentEventType:
mustAppend = true
}
if mustAppend {
transfer := Transfer{
Type: w_common.EventTypeToSubtransactionType(eventType),
ID: getLogSubTxID(*log),
Address: address,
BlockNumber: new(big.Int).SetUint64(log.BlockNumber),
BlockHash: log.BlockHash,
Loaded: true,
NetworkID: d.signer.ChainID().Uint64(),
From: from,
Log: log,
BaseGasFees: baseGasFee,
Transaction: tx,
Receipt: receipt,
Timestamp: blk.Time(),
MultiTransactionID: NoMultiTransactionID,
}
rst = append(rst, transfer)
}
}
return rst, nil
}
func (d *ERC20TransfersDownloader) blocksFromLogs(parent context.Context, logs []types.Log, address common.Address) ([]*DBHeader, error) {
concurrent := NewConcurrentDownloader(parent, NoThreadLimit)
for i := range logs {
l := logs[i]
if l.Removed {
continue
}
id := getLogSubTxID(l)
baseGasFee, err := d.client.GetBaseFeeFromBlock(new(big.Int).SetUint64(l.BlockNumber))
if err != nil {
return nil, err
}
header := &DBHeader{
Number: big.NewInt(int64(l.BlockNumber)),
Hash: l.BlockHash,
PreloadedTransactions: []*PreloadedTransaction{{
Address: address,
BlockNumber: big.NewInt(int64(l.BlockNumber)),
BlockHash: l.BlockHash,
ID: id,
From: address,
Loaded: false,
Type: w_common.Erc20Transfer,
Log: &l,
BaseGasFees: baseGasFee,
}},
Loaded: false,
}
concurrent.Add(func(ctx context.Context) error {
concurrent.PushHeader(header)
return nil
})
}
select {
case <-concurrent.WaitAsync():
case <-parent.Done():
return nil, errLogsDownloaderStuck
}
return concurrent.GetHeaders(), concurrent.Error()
}
// GetHeadersInRange returns transfers between two blocks.
// time to get logs for 100000 blocks = 1.144686979s. with 249 events in the result set.
func (d *ERC20TransfersDownloader) GetHeadersInRange(parent context.Context, from, to *big.Int) ([]*DBHeader, error) {
start := time.Now()
log.Debug("get erc20 transfers in range start", "chainID", d.client.ChainID, "from", from, "to", to)
headers := []*DBHeader{}
ctx := context.Background()
for _, address := range d.accounts {
outbound, err := d.client.FilterLogs(ctx, ethereum.FilterQuery{
FromBlock: from,
ToBlock: to,
Topics: d.outboundTopics(address),
})
if err != nil {
return nil, err
}
inbound, err := d.client.FilterLogs(ctx, ethereum.FilterQuery{
FromBlock: from,
ToBlock: to,
Topics: d.inboundTopics(address),
})
if err != nil {
return nil, err
}
logs := append(outbound, inbound...)
if len(logs) == 0 {
continue
}
rst, err := d.blocksFromLogs(parent, logs, address)
if err != nil {
return nil, err
}
if len(rst) == 0 {
log.Warn("no headers found in logs for account", "chainID", d.client.ChainID, "address", address, "from", from, "to", to)
continue
} else {
headers = append(headers, rst...)
log.Debug("found erc20 transfers for account", "chainID", d.client.ChainID, "address", address,
"from", from, "to", to, "headers", len(headers))
}
}
log.Debug("get erc20 transfers in range end", "chainID", d.client.ChainID,
"from", from, "to", to, "headers", len(headers), "took", time.Since(start))
return headers, nil
}