64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
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package vat_grab
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
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"log"
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)
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type VatGrabTransformerInitializer struct {
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Config shared.TransformerConfig
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}
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func (initializer VatGrabTransformerInitializer) NewVatGrabTransformer(db *postgres.DB, blockChain core.BlockChain) shared.Transformer {
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converter := VatGrabConverter{}
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fetcher := shared.NewFetcher(blockChain)
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repository := NewVatGrabRepository(db)
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return VatGrabTransformer{
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Config: initializer.Config,
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Converter: converter,
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Fetcher: fetcher,
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Repository: repository,
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}
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}
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type VatGrabTransformer struct {
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Config shared.TransformerConfig
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Converter Converter
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Fetcher shared.LogFetcher
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Repository Repository
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}
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func (transformer VatGrabTransformer) Execute() error {
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missingHeaders, err := transformer.Repository.MissingHeaders(transformer.Config.StartingBlockNumber, transformer.Config.EndingBlockNumber)
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if err != nil {
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return err
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}
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log.Printf("Fetching vat init event logs for %d headers \n", len(missingHeaders))
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for _, header := range missingHeaders {
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topics := [][]common.Hash{{common.HexToHash(shared.VatGrabSignature)}}
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matchingLogs, err := transformer.Fetcher.FetchLogs(VatGrabConfig.ContractAddresses, topics, header.BlockNumber)
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if err != nil {
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return err
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}
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if len(matchingLogs) < 1 {
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err = transformer.Repository.MarkHeaderChecked(header.Id)
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if err != nil {
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return err
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}
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continue
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}
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models, err := transformer.Converter.ToModels(matchingLogs)
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if err != nil {
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return err
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}
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err = transformer.Repository.Create(header.Id, models)
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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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return nil
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}
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