107 lines
3.4 KiB
Go
107 lines
3.4 KiB
Go
package geth
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import (
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"strings"
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"log"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"golang.org/x/net/context"
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"golang.org/x/sync/errgroup"
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)
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type Client interface {
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TransactionSender(ctx context.Context, tx *types.Transaction, block common.Hash, index uint) (common.Address, error)
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TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
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}
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func ToCoreBlock(gethBlock *types.Block, client Client) (core.Block, error) {
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transactions, err := convertTransactionsToCore(gethBlock, client)
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if err != nil {
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return core.Block{}, err
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}
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coreBlock := core.Block{
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Difficulty: gethBlock.Difficulty().Int64(),
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ExtraData: hexutil.Encode(gethBlock.Extra()),
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GasLimit: gethBlock.GasLimit(),
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GasUsed: gethBlock.GasUsed(),
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Hash: gethBlock.Hash().Hex(),
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Miner: strings.ToLower(gethBlock.Coinbase().Hex()),
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Nonce: hexutil.Encode(gethBlock.Header().Nonce[:]),
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Number: gethBlock.Number().Int64(),
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ParentHash: gethBlock.ParentHash().Hex(),
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Size: gethBlock.Size().String(),
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Time: gethBlock.Time().Int64(),
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Transactions: transactions,
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UncleHash: gethBlock.UncleHash().Hex(),
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}
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coreBlock.Reward = CalcBlockReward(coreBlock, gethBlock.Uncles())
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coreBlock.UnclesReward = CalcUnclesReward(coreBlock, gethBlock.Uncles())
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return coreBlock, nil
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}
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func convertTransactionsToCore(gethBlock *types.Block, client Client) ([]core.Transaction, error) {
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var g errgroup.Group
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coreTransactions := make([]core.Transaction, len(gethBlock.Transactions()))
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for gethTransactionIndex, gethTransaction := range gethBlock.Transactions() {
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//https://golang.org/doc/faq#closures_and_goroutines
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transaction := gethTransaction
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transactionIndex := uint(gethTransactionIndex)
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g.Go(func() error {
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from, err := client.TransactionSender(context.Background(), transaction, gethBlock.Hash(), transactionIndex)
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if err != nil {
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log.Println("transaction sender: ", err)
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return err
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}
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coreTransaction := transToCoreTrans(transaction, &from)
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coreTransaction, err = appendReceiptToTransaction(client, coreTransaction)
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if err != nil {
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log.Println("receipt: ", err)
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return err
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}
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coreTransactions[transactionIndex] = coreTransaction
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return nil
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})
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}
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if err := g.Wait(); err != nil {
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log.Println("transactions: ", err)
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return coreTransactions, err
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}
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return coreTransactions, nil
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}
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func appendReceiptToTransaction(client Client, transaction core.Transaction) (core.Transaction, error) {
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gethReceipt, err := client.TransactionReceipt(context.Background(), common.HexToHash(transaction.Hash))
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if err != nil {
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return transaction, err
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}
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receipt := ReceiptToCoreReceipt(gethReceipt)
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transaction.Receipt = receipt
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return transaction, nil
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}
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func transToCoreTrans(transaction *types.Transaction, from *common.Address) core.Transaction {
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data := hexutil.Encode(transaction.Data())
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return core.Transaction{
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Hash: transaction.Hash().Hex(),
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Nonce: transaction.Nonce(),
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To: strings.ToLower(addressToHex(transaction.To())),
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From: strings.ToLower(addressToHex(from)),
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GasLimit: transaction.Gas(),
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GasPrice: transaction.GasPrice().Int64(),
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Value: transaction.Value().String(),
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Data: data,
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}
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}
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func addressToHex(to *common.Address) string {
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if to == nil {
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return ""
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}
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return to.Hex()
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}
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