ipld-eth-server/pkg/history/populate_headers.go

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package history
import (
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"log"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore"
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"github.com/vulcanize/vulcanizedb/pkg/transformers"
)
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func PopulateMissingHeaders(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, startingBlockNumber int64, transformers []transformers.Transformer) (int, error) {
lastBlock := blockchain.LastBlock().Int64()
blockRange := headerRepository.MissingBlockNumbers(startingBlockNumber, lastBlock, blockchain.Node().ID)
log.SetPrefix("")
log.Printf("Backfilling %d blocks\n\n", len(blockRange))
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_, err := RetrieveAndUpdateHeaders(blockchain, headerRepository, blockRange, transformers)
if err != nil {
return 0, err
}
return len(blockRange), nil
}
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func RetrieveAndUpdateHeaders(chain core.BlockChain, headerRepository datastore.HeaderRepository, blockNumbers []int64, transformers []transformers.Transformer) (int, error) {
for _, blockNumber := range blockNumbers {
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header, err := chain.GetHeaderByNumber(blockNumber)
if err != nil {
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return 0, err
}
id, err := headerRepository.CreateOrUpdateHeader(header)
if err != nil {
return 0, err
}
for _, transformer := range transformers {
err := transformer.Execute(header, id)
if err != nil {
return 0, err
}
}
}
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return len(blockNumbers), nil
}