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package processor
import (
"github.com/ethereum-optimism/optimism/indexer/database"
"github.com/ethereum-optimism/optimism/indexer/node"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/log"
)
type L2Processor struct {
processor
}
func NewL2Processor(ethClient node.EthClient, db *database.DB) (*L2Processor, error) {
l2ProcessLog := log.New("processor", "l2")
l2ProcessLog.Info("initializing processor")
latestHeader, err := db.Blocks.FinalizedL2BlockHeader()
if err != nil {
return nil, err
}
var fromL2Header *types.Header
if latestHeader != nil {
l2ProcessLog.Info("detected last indexed block", "height", latestHeader.Number.Int, "hash", latestHeader.Hash)
l2Header, err := ethClient.BlockHeaderByHash(latestHeader.Hash)
if err != nil {
l2ProcessLog.Error("unable to fetch header for last indexed block", "hash", latestHeader.Hash, "err", err)
return nil, err
}
fromL2Header = l2Header
} else {
l2ProcessLog.Info("no indexed state, starting from genesis")
fromL2Header = nil
}
l2Processor := &L2Processor{
processor: processor{
fetcher: node.NewFetcher(ethClient, fromL2Header),
db: db,
processFn: l2ProcessFn(ethClient),
processLog: l2ProcessLog,
},
}
return l2Processor, nil
}
func l2ProcessFn(ethClient node.EthClient) func(db *database.DB, headers []*types.Header) error {
return func(db *database.DB, headers []*types.Header) error {
// index all l2 blocks for now
l2Headers := make([]*database.L2BlockHeader, len(headers))
for i, header := range headers {
l2Headers[i] = &database.L2BlockHeader{
BlockHeader: database.BlockHeader{
Hash: header.Hash(),
ParentHash: header.ParentHash,
Number: database.U256{Int: header.Number},
Timestamp: header.Time,
},
}
}
return db.Blocks.StoreL2BlockHeaders(l2Headers)
}
}