725 lines
21 KiB
Go
725 lines
21 KiB
Go
package transfer
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import (
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"context"
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"math/big"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/log"
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"github.com/status-im/status-go/services/wallet/async"
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"github.com/status-im/status-go/services/wallet/chain"
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"github.com/status-im/status-go/services/wallet/walletevent"
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)
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const (
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// EventNewTransfers emitted when new block was added to the same canonical chan.
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EventNewTransfers walletevent.EventType = "new-transfers"
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// EventFetchingRecentHistory emitted when fetching of lastest tx history is started
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EventFetchingRecentHistory walletevent.EventType = "recent-history-fetching"
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// EventRecentHistoryReady emitted when fetching of lastest tx history is started
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EventRecentHistoryReady walletevent.EventType = "recent-history-ready"
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// EventFetchingHistoryError emitted when fetching of tx history failed
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EventFetchingHistoryError walletevent.EventType = "fetching-history-error"
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// EventNonArchivalNodeDetected emitted when a connection to a non archival node is detected
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EventNonArchivalNodeDetected walletevent.EventType = "non-archival-node-detected"
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)
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var (
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// This will work only for binance testnet as mainnet doesn't support
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// archival request.
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binanceChainMaxInitialRange = big.NewInt(500000)
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binanceChainErc20BatchSize = big.NewInt(5000)
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goerliErc20BatchSize = big.NewInt(100000)
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erc20BatchSize = big.NewInt(500000)
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binancChainID = uint64(56)
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goerliChainID = uint64(5)
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binanceTestChainID = uint64(97)
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numberOfBlocksCheckedPerIteration = 40
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)
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type ethHistoricalCommand struct {
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db *Database
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eth Downloader
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address common.Address
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chainClient *chain.Client
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balanceCache *balanceCache
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feed *event.Feed
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foundHeaders []*DBHeader
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error error
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noLimit bool
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from *LastKnownBlock
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to, resultingFrom *big.Int
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}
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func (c *ethHistoricalCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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func (c *ethHistoricalCommand) Run(ctx context.Context) (err error) {
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start := time.Now()
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if c.from.Number != nil && c.from.Balance != nil {
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c.balanceCache.addBalanceToCache(c.address, c.from.Number, c.from.Balance)
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}
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if c.from.Number != nil && c.from.Nonce != nil {
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c.balanceCache.addNonceToCache(c.address, c.from.Number, c.from.Nonce)
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}
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from, headers, err := findBlocksWithEthTransfers(ctx, c.chainClient, c.balanceCache, c.eth, c.address, c.from.Number, c.to, c.noLimit)
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if err != nil {
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c.error = err
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return nil
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}
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c.foundHeaders = headers
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c.resultingFrom = from
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log.Info("eth historical downloader finished successfully", "address", c.address, "from", from, "to", c.to, "total blocks", len(headers), "time", time.Since(start))
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//err = c.db.ProcessBlocks(c.address, from, c.to, headers, ethTransfer)
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if err != nil {
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log.Error("failed to save found blocks with transfers", "error", err)
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return err
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}
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log.Debug("eth transfers were persisted. command is closed")
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return nil
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}
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type erc20HistoricalCommand struct {
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db *Database
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erc20 BatchDownloader
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address common.Address
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chainClient *chain.Client
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feed *event.Feed
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iterator *IterativeDownloader
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to *big.Int
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from *big.Int
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foundHeaders []*DBHeader
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}
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func (c *erc20HistoricalCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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func getErc20BatchSize(chainID uint64) *big.Int {
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if isBinanceChain(chainID) {
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return binanceChainErc20BatchSize
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}
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if chainID == goerliChainID {
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return goerliErc20BatchSize
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}
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return erc20BatchSize
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}
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func (c *erc20HistoricalCommand) Run(ctx context.Context) (err error) {
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start := time.Now()
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if c.iterator == nil {
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c.iterator, err = SetupIterativeDownloader(
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c.db, c.chainClient, c.address,
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c.erc20, getErc20BatchSize(c.chainClient.ChainID), c.to, c.from)
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if err != nil {
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log.Error("failed to setup historical downloader for erc20")
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return err
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}
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}
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for !c.iterator.Finished() {
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headers, _, _, err := c.iterator.Next(ctx)
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if err != nil {
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log.Error("failed to get next batch", "error", err)
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return err
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}
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c.foundHeaders = append(c.foundHeaders, headers...)
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/*err = c.db.ProcessBlocks(c.address, from, to, headers, erc20Transfer)
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if err != nil {
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c.iterator.Revert()
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log.Error("failed to save downloaded erc20 blocks with transfers", "error", err)
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return err
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}*/
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}
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log.Info("wallet historical downloader for erc20 transfers finished", "in", time.Since(start))
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return nil
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}
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// controlCommand implements following procedure (following parts are executed sequeantially):
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// - verifies that the last header that was synced is still in the canonical chain
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// - runs fast indexing for each account separately
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// - starts listening to new blocks and watches for reorgs
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type controlCommand struct {
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accounts []common.Address
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db *Database
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block *Block
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eth *ETHDownloader
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erc20 *ERC20TransfersDownloader
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chainClient *chain.Client
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feed *event.Feed
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errorsCount int
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nonArchivalRPCNode bool
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}
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func (c *controlCommand) LoadTransfers(ctx context.Context, downloader *ETHDownloader, limit int) (map[common.Address][]Transfer, error) {
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return loadTransfers(ctx, c.accounts, c.block, c.db, c.chainClient, limit, make(map[common.Address][]*big.Int))
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}
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func (c *controlCommand) Run(parent context.Context) error {
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log.Info("start control command")
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ctx, cancel := context.WithTimeout(parent, 3*time.Second)
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head, err := c.chainClient.HeaderByNumber(ctx, nil)
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cancel()
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if err != nil {
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if c.NewError(err) {
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return nil
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}
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return err
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}
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c.feed.Send(walletevent.Event{
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Type: EventFetchingRecentHistory,
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Accounts: c.accounts,
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})
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log.Info("current head is", "block number", head.Number)
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lastKnownEthBlocks, accountsWithoutHistory, err := c.block.GetLastKnownBlockByAddresses(c.chainClient.ChainID, c.accounts)
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if err != nil {
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log.Error("failed to load last head from database", "error", err)
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if c.NewError(err) {
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return nil
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}
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return err
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}
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fromMap := map[common.Address]*big.Int{}
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if !c.nonArchivalRPCNode {
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fromMap, err = findFirstRanges(parent, accountsWithoutHistory, head.Number, c.chainClient)
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if err != nil {
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if c.NewError(err) {
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return nil
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}
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return err
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}
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}
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target := head.Number
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fromByAddress := map[common.Address]*LastKnownBlock{}
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toByAddress := map[common.Address]*big.Int{}
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for _, address := range c.accounts {
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from, ok := lastKnownEthBlocks[address]
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if !ok {
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from = &LastKnownBlock{Number: fromMap[address]}
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}
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if c.nonArchivalRPCNode {
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from = &LastKnownBlock{Number: big.NewInt(0).Sub(target, big.NewInt(100))}
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}
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fromByAddress[address] = from
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toByAddress[address] = target
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}
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bCache := newBalanceCache()
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cmnd := &findAndCheckBlockRangeCommand{
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accounts: c.accounts,
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db: c.db,
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chainClient: c.chainClient,
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balanceCache: bCache,
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feed: c.feed,
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fromByAddress: fromByAddress,
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toByAddress: toByAddress,
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}
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err = cmnd.Command()(parent)
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if err != nil {
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if c.NewError(err) {
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return nil
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}
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return err
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}
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if cmnd.error != nil {
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if c.NewError(cmnd.error) {
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return nil
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}
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return cmnd.error
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}
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downloader := ÐDownloader{
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chainClient: c.chainClient,
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accounts: c.accounts,
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signer: types.NewLondonSigner(c.chainClient.ToBigInt()),
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db: c.db,
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}
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_, err = c.LoadTransfers(parent, downloader, 40)
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if err != nil {
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if c.NewError(err) {
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return nil
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}
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return err
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}
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events := map[common.Address]walletevent.Event{}
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for _, address := range c.accounts {
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event := walletevent.Event{
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Type: EventNewTransfers,
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Accounts: []common.Address{address},
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}
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for _, header := range cmnd.foundHeaders[address] {
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if event.BlockNumber == nil || header.Number.Cmp(event.BlockNumber) == 1 {
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event.BlockNumber = header.Number
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}
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}
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if event.BlockNumber != nil {
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events[address] = event
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}
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}
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for _, event := range events {
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c.feed.Send(event)
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}
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c.feed.Send(walletevent.Event{
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Type: EventRecentHistoryReady,
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Accounts: c.accounts,
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BlockNumber: target,
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})
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log.Info("end control command")
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return err
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}
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func nonArchivalNodeError(err error) bool {
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return strings.Contains(err.Error(), "missing trie node") ||
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strings.Contains(err.Error(), "project ID does not have access to archive state")
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}
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func (c *controlCommand) NewError(err error) bool {
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c.errorsCount++
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log.Error("controlCommand error", "error", err, "counter", c.errorsCount)
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if nonArchivalNodeError(err) {
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log.Info("Non archival node detected")
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c.nonArchivalRPCNode = true
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c.feed.Send(walletevent.Event{
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Type: EventNonArchivalNodeDetected,
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})
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}
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if c.errorsCount >= 3 {
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c.feed.Send(walletevent.Event{
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Type: EventFetchingHistoryError,
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Message: err.Error(),
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})
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return true
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}
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return false
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}
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func (c *controlCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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type transfersCommand struct {
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db *Database
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eth *ETHDownloader
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block *big.Int
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address common.Address
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chainClient *chain.Client
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fetchedTransfers []Transfer
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}
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func (c *transfersCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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func (c *transfersCommand) Run(ctx context.Context) (err error) {
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allTransfers, err := getTransfersByBlocks(ctx, c.db, c.eth, c.address, []*big.Int{c.block})
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if err != nil {
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log.Info("getTransfersByBlocks error", "error", err)
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return err
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}
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err = c.db.SaveTranfers(c.chainClient.ChainID, c.address, allTransfers, []*big.Int{c.block})
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if err != nil {
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log.Error("SaveTranfers error", "error", err)
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return err
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}
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c.fetchedTransfers = allTransfers
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log.Debug("transfers loaded", "address", c.address, "len", len(allTransfers))
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return nil
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}
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type loadTransfersCommand struct {
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accounts []common.Address
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db *Database
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block *Block
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chainClient *chain.Client
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blocksByAddress map[common.Address][]*big.Int
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foundTransfersByAddress map[common.Address][]Transfer
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}
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func (c *loadTransfersCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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func (c *loadTransfersCommand) LoadTransfers(ctx context.Context, downloader *ETHDownloader, limit int, blocksByAddress map[common.Address][]*big.Int) (map[common.Address][]Transfer, error) {
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return loadTransfers(ctx, c.accounts, c.block, c.db, c.chainClient, limit, blocksByAddress)
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}
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func (c *loadTransfersCommand) Run(parent context.Context) (err error) {
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downloader := ÐDownloader{
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chainClient: c.chainClient,
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accounts: c.accounts,
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signer: types.NewLondonSigner(c.chainClient.ToBigInt()),
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db: c.db,
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}
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transfersByAddress, err := c.LoadTransfers(parent, downloader, 40, c.blocksByAddress)
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if err != nil {
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return err
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}
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c.foundTransfersByAddress = transfersByAddress
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return
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}
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type findAndCheckBlockRangeCommand struct {
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accounts []common.Address
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db *Database
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chainClient *chain.Client
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balanceCache *balanceCache
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feed *event.Feed
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fromByAddress map[common.Address]*LastKnownBlock
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toByAddress map[common.Address]*big.Int
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foundHeaders map[common.Address][]*DBHeader
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noLimit bool
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error error
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}
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func (c *findAndCheckBlockRangeCommand) Command() async.Command {
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return async.FiniteCommand{
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Interval: 5 * time.Second,
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Runable: c.Run,
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}.Run
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}
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func (c *findAndCheckBlockRangeCommand) Run(parent context.Context) (err error) {
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log.Debug("start findAndCHeckBlockRangeCommand")
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newFromByAddress, ethHeadersByAddress, err := c.fastIndex(parent, c.balanceCache, c.fromByAddress, c.toByAddress)
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if err != nil {
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c.error = err
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return nil
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}
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if c.noLimit {
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newFromByAddress = map[common.Address]*big.Int{}
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for _, address := range c.accounts {
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newFromByAddress[address] = c.fromByAddress[address].Number
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}
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}
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erc20HeadersByAddress, err := c.fastIndexErc20(parent, newFromByAddress, c.toByAddress)
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if err != nil {
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return err
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}
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foundHeaders := map[common.Address][]*DBHeader{}
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maxBlockNumber := big.NewInt(0)
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for _, address := range c.accounts {
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ethHeaders := ethHeadersByAddress[address]
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erc20Headers := erc20HeadersByAddress[address]
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allHeaders := append(ethHeaders, erc20Headers...)
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uniqHeadersByHash := map[common.Hash]*DBHeader{}
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for _, header := range allHeaders {
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uniqHeader, ok := uniqHeadersByHash[header.Hash]
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if ok {
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if len(header.Erc20Transfers) > 0 {
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uniqHeader.Erc20Transfers = append(uniqHeader.Erc20Transfers, header.Erc20Transfers...)
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}
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uniqHeadersByHash[header.Hash] = uniqHeader
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} else {
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uniqHeadersByHash[header.Hash] = header
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}
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}
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uniqHeaders := []*DBHeader{}
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for _, header := range uniqHeadersByHash {
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uniqHeaders = append(uniqHeaders, header)
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}
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foundHeaders[address] = uniqHeaders
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for _, header := range allHeaders {
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if header.Number.Cmp(maxBlockNumber) == 1 {
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maxBlockNumber = header.Number
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}
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}
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lastBlockNumber := c.toByAddress[address]
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log.Debug("saving headers", "len", len(uniqHeaders), "lastBlockNumber", lastBlockNumber, "balance", c.balanceCache.ReadCachedBalance(address, lastBlockNumber), "nonce", c.balanceCache.ReadCachedNonce(address, lastBlockNumber))
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to := &LastKnownBlock{
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Number: lastBlockNumber,
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Balance: c.balanceCache.ReadCachedBalance(address, lastBlockNumber),
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Nonce: c.balanceCache.ReadCachedNonce(address, lastBlockNumber),
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}
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err = c.db.ProcessBlocks(c.chainClient.ChainID, address, newFromByAddress[address], to, uniqHeaders)
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if err != nil {
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return err
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}
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}
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c.foundHeaders = foundHeaders
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return
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}
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// run fast indexing for every accont up to canonical chain head minus safety depth.
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// every account will run it from last synced header.
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func (c *findAndCheckBlockRangeCommand) fastIndex(ctx context.Context, bCache *balanceCache, fromByAddress map[common.Address]*LastKnownBlock, toByAddress map[common.Address]*big.Int) (map[common.Address]*big.Int, map[common.Address][]*DBHeader, error) {
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start := time.Now()
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group := async.NewGroup(ctx)
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commands := make([]*ethHistoricalCommand, len(c.accounts))
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for i, address := range c.accounts {
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eth := ðHistoricalCommand{
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db: c.db,
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chainClient: c.chainClient,
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balanceCache: bCache,
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address: address,
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eth: ÐDownloader{
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chainClient: c.chainClient,
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accounts: []common.Address{address},
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signer: types.NewLondonSigner(c.chainClient.ToBigInt()),
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db: c.db,
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},
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feed: c.feed,
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from: fromByAddress[address],
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to: toByAddress[address],
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noLimit: c.noLimit,
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}
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commands[i] = eth
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group.Add(eth.Command())
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}
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select {
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case <-ctx.Done():
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return nil, nil, ctx.Err()
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case <-group.WaitAsync():
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|
resultingFromByAddress := map[common.Address]*big.Int{}
|
|
headers := map[common.Address][]*DBHeader{}
|
|
for _, command := range commands {
|
|
if command.error != nil {
|
|
return nil, nil, command.error
|
|
}
|
|
resultingFromByAddress[command.address] = command.resultingFrom
|
|
headers[command.address] = command.foundHeaders
|
|
}
|
|
log.Info("fast indexer finished", "in", time.Since(start))
|
|
return resultingFromByAddress, headers, nil
|
|
}
|
|
}
|
|
|
|
// run fast indexing for every accont up to canonical chain head minus safety depth.
|
|
// every account will run it from last synced header.
|
|
func (c *findAndCheckBlockRangeCommand) fastIndexErc20(ctx context.Context, fromByAddress map[common.Address]*big.Int, toByAddress map[common.Address]*big.Int) (map[common.Address][]*DBHeader, error) {
|
|
start := time.Now()
|
|
group := async.NewGroup(ctx)
|
|
|
|
commands := make([]*erc20HistoricalCommand, len(c.accounts))
|
|
for i, address := range c.accounts {
|
|
erc20 := &erc20HistoricalCommand{
|
|
db: c.db,
|
|
erc20: NewERC20TransfersDownloader(c.chainClient, []common.Address{address}, types.NewLondonSigner(c.chainClient.ToBigInt())),
|
|
chainClient: c.chainClient,
|
|
feed: c.feed,
|
|
address: address,
|
|
from: fromByAddress[address],
|
|
to: toByAddress[address],
|
|
foundHeaders: []*DBHeader{},
|
|
}
|
|
commands[i] = erc20
|
|
group.Add(erc20.Command())
|
|
}
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
case <-group.WaitAsync():
|
|
headres := map[common.Address][]*DBHeader{}
|
|
for _, command := range commands {
|
|
headres[command.address] = command.foundHeaders
|
|
}
|
|
log.Info("fast indexer Erc20 finished", "in", time.Since(start))
|
|
return headres, nil
|
|
}
|
|
}
|
|
|
|
func loadTransfers(ctx context.Context, accounts []common.Address, block *Block, db *Database, chainClient *chain.Client, limit int, blocksByAddress map[common.Address][]*big.Int) (map[common.Address][]Transfer, error) {
|
|
start := time.Now()
|
|
group := async.NewGroup(ctx)
|
|
|
|
commands := []*transfersCommand{}
|
|
for _, address := range accounts {
|
|
blocks, ok := blocksByAddress[address]
|
|
|
|
if !ok {
|
|
blocks, _ = block.GetBlocksByAddress(chainClient.ChainID, address, numberOfBlocksCheckedPerIteration)
|
|
}
|
|
for _, block := range blocks {
|
|
transfers := &transfersCommand{
|
|
db: db,
|
|
chainClient: chainClient,
|
|
address: address,
|
|
eth: ÐDownloader{
|
|
chainClient: chainClient,
|
|
accounts: []common.Address{address},
|
|
signer: types.NewLondonSigner(chainClient.ToBigInt()),
|
|
db: db,
|
|
},
|
|
block: block,
|
|
}
|
|
commands = append(commands, transfers)
|
|
group.Add(transfers.Command())
|
|
}
|
|
}
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil, ctx.Err()
|
|
case <-group.WaitAsync():
|
|
transfersByAddress := map[common.Address][]Transfer{}
|
|
for _, command := range commands {
|
|
if len(command.fetchedTransfers) == 0 {
|
|
continue
|
|
}
|
|
|
|
transfers, ok := transfersByAddress[command.address]
|
|
if !ok {
|
|
transfers = []Transfer{}
|
|
}
|
|
|
|
for _, transfer := range command.fetchedTransfers {
|
|
transfersByAddress[command.address] = append(transfers, transfer)
|
|
}
|
|
}
|
|
log.Info("loadTransfers finished", "in", time.Since(start))
|
|
return transfersByAddress, nil
|
|
}
|
|
}
|
|
|
|
func isBinanceChain(chainID uint64) bool {
|
|
return chainID == binancChainID || chainID == binanceTestChainID
|
|
}
|
|
|
|
func getLowestFrom(chainID uint64, to *big.Int) *big.Int {
|
|
from := big.NewInt(0)
|
|
if isBinanceChain(chainID) && big.NewInt(0).Sub(to, from).Cmp(binanceChainMaxInitialRange) == 1 {
|
|
from = big.NewInt(0).Sub(to, binanceChainMaxInitialRange)
|
|
}
|
|
|
|
return from
|
|
}
|
|
|
|
func findFirstRange(c context.Context, account common.Address, initialTo *big.Int, client *chain.Client) (*big.Int, error) {
|
|
from := getLowestFrom(client.ChainID, initialTo)
|
|
to := initialTo
|
|
goal := uint64(20)
|
|
|
|
if from.Cmp(to) == 0 {
|
|
return to, nil
|
|
}
|
|
|
|
firstNonce, err := client.NonceAt(c, account, to)
|
|
log.Info("find range with 20 <= len(tx) <= 25", "account", account, "firstNonce", firstNonce, "from", from, "to", to)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if firstNonce <= goal {
|
|
return from, nil
|
|
}
|
|
|
|
nonceDiff := firstNonce
|
|
iterations := 0
|
|
for iterations < 50 {
|
|
iterations = iterations + 1
|
|
|
|
if nonceDiff > goal {
|
|
// from = (from + to) / 2
|
|
from = from.Add(from, to)
|
|
from = from.Div(from, big.NewInt(2))
|
|
} else {
|
|
// from = from - (from + to) / 2
|
|
// to = from
|
|
diff := big.NewInt(0).Sub(to, from)
|
|
diff.Div(diff, big.NewInt(2))
|
|
to = big.NewInt(from.Int64())
|
|
from.Sub(from, diff)
|
|
}
|
|
fromNonce, err := client.NonceAt(c, account, from)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
nonceDiff = firstNonce - fromNonce
|
|
|
|
log.Info("next nonce", "from", from, "n", fromNonce, "diff", firstNonce-fromNonce)
|
|
|
|
if goal <= nonceDiff && nonceDiff <= (goal+5) {
|
|
log.Info("range found", "account", account, "from", from, "to", to)
|
|
return from, nil
|
|
}
|
|
}
|
|
|
|
log.Info("range found", "account", account, "from", from, "to", to)
|
|
|
|
return from, nil
|
|
}
|
|
|
|
func findFirstRanges(c context.Context, accounts []common.Address, initialTo *big.Int, client *chain.Client) (map[common.Address]*big.Int, error) {
|
|
res := map[common.Address]*big.Int{}
|
|
|
|
for _, address := range accounts {
|
|
from, err := findFirstRange(c, address, initialTo, client)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
res[address] = from
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func getTransfersByBlocks(ctx context.Context, db *Database, downloader *ETHDownloader, address common.Address, blocks []*big.Int) ([]Transfer, error) {
|
|
allTransfers := []Transfer{}
|
|
|
|
for _, block := range blocks {
|
|
transfers, err := downloader.GetTransfersByNumber(ctx, block)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
log.Debug("loadTransfers", "block", block, "new transfers", len(transfers))
|
|
if len(transfers) > 0 {
|
|
allTransfers = append(allTransfers, transfers...)
|
|
}
|
|
}
|
|
|
|
return allTransfers, nil
|
|
}
|