ipld-eth-server/pkg/history/populate_headers.go
Edvard Hübinette ebca338b1e VDB-302 Sleep when no missing blocks in lightSync (#129)
* Sleep when no missing blocks in lightSync

* Fix tests and error propagation

* Correct geth.log to logrus
2019-01-11 10:58:41 +01:00

52 lines
1.5 KiB
Go

package history
import (
log "github.com/sirupsen/logrus"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore"
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
)
func PopulateMissingHeaders(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, startingBlockNumber int64) (int, error) {
lastBlock := blockchain.LastBlock().Int64()
headerAlreadyExists, err := headerRepository.HeaderExists(lastBlock)
if err != nil {
log.Error("Error in checking header in PopulateMissingHeaders: ", err)
return 0, err
} else if headerAlreadyExists {
return 0, nil
}
blockNumbers, err := headerRepository.MissingBlockNumbers(startingBlockNumber, lastBlock, blockchain.Node().ID)
if err != nil {
log.Error("Error getting missing block numbers in PopulateMissingHeaders: ", err)
return 0, err
}
log.Printf("Backfilling %d blocks\n\n", len(blockNumbers))
_, err = RetrieveAndUpdateHeaders(blockchain, headerRepository, blockNumbers)
if err != nil {
return 0, err
}
return len(blockNumbers), nil
}
func RetrieveAndUpdateHeaders(chain core.BlockChain, headerRepository datastore.HeaderRepository, blockNumbers []int64) (int, error) {
for _, blockNumber := range blockNumbers {
header, err := chain.GetHeaderByNumber(blockNumber)
if err != nil {
return 0, err
}
_, err = headerRepository.CreateOrUpdateHeader(header)
if err != nil {
if err == repositories.ErrValidHeaderExists {
continue
}
return 0, err
}
}
return len(blockNumbers), nil
}