ipld-eth-server/pkg/history/populate_blocks.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 (
log "github.com/sirupsen/logrus"
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"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore"
)
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func PopulateMissingBlocks(blockchain core.BlockChain, blockRepository datastore.BlockRepository, startingBlockNumber int64) (int, error) {
lastBlock, err := blockchain.LastBlock()
if err != nil {
log.Error("PopulateMissingBlocks: error getting last block: ", err)
return 0, err
}
blockRange := blockRepository.MissingBlockNumbers(startingBlockNumber, lastBlock.Int64(), blockchain.Node().ID)
if len(blockRange) == 0 {
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return 0, nil
}
log.Printf("Backfilling %d blocks\n\n", len(blockRange))
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_, err = RetrieveAndUpdateBlocks(blockchain, blockRepository, blockRange)
if err != nil {
log.Error("PopulateMissingBlocks: error gettings/updating blocks: ", err)
return 0, err
}
return len(blockRange), nil
}
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func RetrieveAndUpdateBlocks(blockchain core.BlockChain, blockRepository datastore.BlockRepository, blockNumbers []int64) (int, error) {
for _, blockNumber := range blockNumbers {
block, err := blockchain.GetBlockByNumber(blockNumber)
if err != nil {
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log.Error("RetrieveAndUpdateBlocks: error getting block: ", err)
return 0, err
}
_, err = blockRepository.CreateOrUpdateBlock(block)
if err != nil {
log.Error("RetrieveAndUpdateBlocks: error creating/updating block: ", err)
return 0, err
}
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}
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return len(blockNumbers), nil
}