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revert cleanup: add missing functions and variables to download headers loop

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This commit is contained in:
Lindsey Gray 2023-12-29 11:44:40 -06:00
parent e7489873aa
commit ff5813f810
1 changed files with 25 additions and 0 deletions
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25
eth/downloader/downloader.go
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@ -1275,9 +1275,34 @@ func (d *Downloader) fetchReceipts(from uint64, beaconMode bool) error {
// queue until the stream ends or a failure occurs.
func (d *Downloader) processHeaders(origin uint64, td, ttd *big.Int, beaconMode bool) error {
var (
rollback uint64 // Zero means no rollback (fine as you can't unroll the genesis)
rollbackErr error
mode = d.getMode()
gotHeaders = false // Wait for batches of headers to process
)
defer func() {
if rollback > 0 {
lastHeader, lastFastBlock, lastBlock := d.lightchain.CurrentHeader().Number, common.Big0, common.Big0
if mode != LightSync {
lastFastBlock = d.blockchain.CurrentSnapBlock().Number
lastBlock = d.blockchain.CurrentBlock().Number
}
if err := d.lightchain.SetHead(rollback - 1); err != nil { // -1 to target the parent of the first uncertain block
// We're already unwinding the stack, only print the error to make it more visible
log.Error("Failed to roll back chain segment", "head", rollback-1, "err", err)
}
curFastBlock, curBlock := common.Big0, common.Big0
if mode != LightSync {
curFastBlock = d.blockchain.CurrentSnapBlock().Number
curBlock = d.blockchain.CurrentBlock().Number
}
log.Warn("Rolled back chain segment",
"header", fmt.Sprintf("%d->%d", lastHeader, d.lightchain.CurrentHeader().Number),
"snap", fmt.Sprintf("%d->%d", lastFastBlock, curFastBlock),
"block", fmt.Sprintf("%d->%d", lastBlock, curBlock), "reason", rollbackErr)
}
}()
for {
select {
case <-d.cancelCh: