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

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// VulcanizeDB
// Copyright © 2018 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package history
import (
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore"
"log"
)
func PopulateMissingHeaders(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, startingBlockNumber int64) int {
lastBlock := blockchain.LastBlock().Int64()
blockRange := headerRepository.MissingBlockNumbers(startingBlockNumber, lastBlock, blockchain.Node().ID)
log.SetPrefix("")
log.Printf("Backfilling %d blocks\n\n", len(blockRange))
RetrieveAndUpdateHeaders(blockchain, headerRepository, blockRange)
return len(blockRange)
}
func RetrieveAndUpdateHeaders(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, blockNumbers []int64) int {
for _, blockNumber := range blockNumbers {
header, err := blockchain.GetHeaderByNumber(blockNumber)
if err != nil {
log.Printf("failed to retrieve block number: %d\n", blockNumber)
return 0
}
// TODO: handle possible error here
headerRepository.CreateOrUpdateHeader(header)
}
return len(blockNumbers)
}