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backup: add group-by option

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This commit is contained in:
Michael Eischer 2022-12-10 15:34:25 +01:00
parent acb40d2b94
commit 2885db7902
1 changed files with 18 additions and 1 deletions
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19
cmd/restic/cmd_backup.go
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@ -89,6 +89,7 @@ type BackupOptions struct {
excludePatternOptions
Parent string
GroupBy restic.SnapshotGroupByOptions
Force bool
ExcludeOtherFS bool
ExcludeIfPresent []string
@ -121,6 +122,8 @@ func init() {
f := cmdBackup.Flags()
f.StringVar(&backupOptions.Parent, "parent", "", "use this parent `snapshot` (default: last snapshot in the repository that has the same target files/directories, and is not newer than the snapshot time)")
backupOptions.GroupBy = restic.SnapshotGroupByOptions{Host: true, Path: true}
f.VarP(&backupOptions.GroupBy, "group-by", "g", "`group` snapshots by host, paths and/or tags, separated by comma (disable grouping with '')")
f.BoolVarP(&backupOptions.Force, "force", "f", false, `force re-reading the target files/directories (overrides the "parent" flag)`)
initExcludePatternOptions(f, &backupOptions.excludePatternOptions)
@ -439,7 +442,21 @@ func findParentSnapshot(ctx context.Context, repo restic.Repository, opts Backup
if snName == "" {
snName = "latest"
}
sn, err := restic.FindFilteredSnapshot(ctx, repo.Backend(), repo, []string{opts.Host}, []restic.TagList{}, targets, &timeStampLimit, snName)
var hosts []string
var paths []string
var tags []restic.TagList
if opts.GroupBy.Host {
hosts = []string{opts.Host}
}
if opts.GroupBy.Path {
paths = targets
}
if opts.GroupBy.Tag {
tags = []restic.TagList{opts.Tags.Flatten()}
}
sn, err := restic.FindFilteredSnapshot(ctx, repo.Backend(), repo, hosts, tags, paths, &timeStampLimit, snName)
// Snapshot not found is ok if no explicit parent was set
if opts.Parent == "" && errors.Is(err, restic.ErrNoSnapshotFound) {
err = nil