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unify snapshot copy codepaths

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This commit is contained in:
Michael Eischer
2025-11-23 17:12:54 +01:00
parent 405813f250
commit 63bc1405ea
1 changed files with 17 additions and 30 deletions
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47
cmd/restic/cmd_copy.go
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@@ -195,13 +195,20 @@ func copyTreeBatched(ctx context.Context, srcRepo restic.Repository, dstRepo res
// remember already processed trees across all snapshots
visitedTrees := restic.NewIDSet()
// dependent on opts.batch the pack uploader is started either for
// each snapshot to be copied or once for all snapshots
batchSize := 1
if opts.batch {
batchSize = len(selectedSnapshots)
}
for len(selectedSnapshots) > 0 {
var batch []*data.Snapshot
// call WithBlobUploader() once and then loop over all selectedSnapshots
err := dstRepo.WithBlobUploader(ctx, func(ctx context.Context, uploader restic.BlobSaver) error {
for _, sn := range selectedSnapshots {
for len(selectedSnapshots) > 0 && len(batch) < batchSize {
sn := selectedSnapshots[0]
selectedSnapshots = selectedSnapshots[1:]
batch = append(batch, sn)
printer.P("\n%v", sn)
printer.P(" copy started, this may take a while...")
err := copyTree(ctx, srcRepo, dstRepo, visitedTrees, *sn.Tree, printer, uploader)
@@ -211,38 +218,18 @@ func copyTreeBatched(ctx context.Context, srcRepo restic.Repository, dstRepo res
debug.Log("tree copied")
}
// save all the snapshots
for _, sn := range selectedSnapshots {
err := copySaveSnapshot(ctx, sn, dstRepo, printer)
if err != nil {
return err
}
}
return nil
})
return err
}
// no batch option, loop over selectedSnapshots and call WithBlobUploader()
// inside the loop
for _, sn := range selectedSnapshots {
printer.P("\n%v", sn)
printer.P(" copy started, this may take a while...")
err := dstRepo.WithBlobUploader(ctx, func(ctx context.Context, uploader restic.BlobSaver) error {
if err := copyTree(ctx, srcRepo, dstRepo, visitedTrees, *sn.Tree, printer, uploader); err != nil {
return err
}
debug.Log("tree copied")
return nil
})
if err != nil {
return err
}
err = copySaveSnapshot(ctx, sn, dstRepo, printer)
if err != nil {
return err
// save all the snapshots
for _, sn := range batch {
err := copySaveSnapshot(ctx, sn, dstRepo, printer)
if err != nil {
return err
}
}
}