56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
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package transactions
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import (
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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/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
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)
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type ITransactionsSyncer interface {
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SyncTransactions(headerID int64, logs []types.Log) error
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}
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type TransactionsSyncer struct {
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BlockChain core.BlockChain
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Repository datastore.HeaderRepository
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}
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func NewTransactionsSyncer(db *postgres.DB, blockChain core.BlockChain) TransactionsSyncer {
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repository := repositories.NewHeaderRepository(db)
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return TransactionsSyncer{
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BlockChain: blockChain,
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Repository: repository,
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}
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}
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func (syncer TransactionsSyncer) SyncTransactions(headerID int64, logs []types.Log) error {
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transactionHashes := getUniqueTransactionHashes(logs)
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transactions, transactionErr := syncer.BlockChain.GetTransactions(transactionHashes)
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if transactionErr != nil {
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return transactionErr
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}
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for _, transaction := range transactions {
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writeErr := syncer.Repository.CreateTransaction(headerID, transaction)
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if writeErr != nil {
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return writeErr
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}
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}
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return nil
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}
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func getUniqueTransactionHashes(logs []types.Log) []common.Hash {
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seen := make(map[common.Hash]struct{}, len(logs))
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var result []common.Hash
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for _, log := range logs {
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if _, ok := seen[log.TxHash]; ok {
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continue
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}
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seen[log.TxHash] = struct{}{}
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result = append(result, log.TxHash)
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}
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return result
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}
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