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core: report progress on log chain exports (#17066) 

* core/blockchain: export progress

* core: polish up chain export progress report a bit
This commit is contained in:
Raghav Sood 2018-07-26 23:26:24 +12:00 committed by Péter Szilágyi
parent 021d6fbbbb
commit 11a402f747
2 changed files with 9 additions and 4 deletions
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3
cmd/geth/chaincmd.go
View File

@ -94,7 +94,8 @@ processing will proceed even if an individual RLP-file import failure occurs.`,
Requires a first argument of the file to write to.
Optional second and third arguments control the first and
last block to write. In this mode, the file will be appended
if already existing.`,
if already existing. If the file ends with .gz, the output will
be gzipped.`,
}
importPreimagesCommand = cli.Command{
Action: utils.MigrateFlags(importPreimages),

10
core/blockchain.go
View File

@ -450,15 +450,19 @@ func (bc *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error {
}
log.Info("Exporting batch of blocks", "count", last-first+1)
start, reported := time.Now(), time.Now()
for nr := first; nr <= last; nr++ {
block := bc.GetBlockByNumber(nr)
if block == nil {
return fmt.Errorf("export failed on #%d: not found", nr)
}
if err := block.EncodeRLP(w); err != nil {
return err
}
if time.Since(reported) >= statsReportLimit {
log.Info("Exporting blocks", "exported", block.NumberU64()-first, "elapsed", common.PrettyDuration(time.Since(start)))
reported = time.Now()
}
}
return nil
@ -1203,8 +1207,8 @@ type insertStats struct {
startTime mclock.AbsTime
}
// statsReportLimit is the time limit during import after which we always print
// out progress. This avoids the user wondering what's going on.
// statsReportLimit is the time limit during import and export after which we
// always print out progress. This avoids the user wondering what's going on.
const statsReportLimit = 8 * time.Second
// report prints statistics if some number of blocks have been processed