273 lines
8.5 KiB
Go
273 lines
8.5 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"io"
|
|
|
|
"github.com/restic/restic/internal/errors"
|
|
"github.com/restic/restic/internal/restic"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
var cmdForget = &cobra.Command{
|
|
Use: "forget [flags] [snapshot ID] [...]",
|
|
Short: "Remove snapshots from the repository",
|
|
Long: `
|
|
The "forget" command removes snapshots according to a policy. Please note that
|
|
this command really only deletes the snapshot object in the repository, which
|
|
is a reference to data stored there. In order to remove this (now unreferenced)
|
|
data after 'forget' was run successfully, see the 'prune' command.
|
|
|
|
EXIT STATUS
|
|
===========
|
|
|
|
Exit status is 0 if the command was successful, and non-zero if there was any error.
|
|
`,
|
|
DisableAutoGenTag: true,
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
|
return runForget(forgetOptions, globalOptions, args)
|
|
},
|
|
}
|
|
|
|
// ForgetOptions collects all options for the forget command.
|
|
type ForgetOptions struct {
|
|
Last int
|
|
Hourly int
|
|
Daily int
|
|
Weekly int
|
|
Monthly int
|
|
Yearly int
|
|
Within restic.Duration
|
|
WithinHourly restic.Duration
|
|
WithinDaily restic.Duration
|
|
WithinWeekly restic.Duration
|
|
WithinMonthly restic.Duration
|
|
WithinYearly restic.Duration
|
|
KeepTags restic.TagLists
|
|
|
|
Hosts []string
|
|
Tags restic.TagLists
|
|
Paths []string
|
|
Compact bool
|
|
|
|
// Grouping
|
|
GroupBy string
|
|
DryRun bool
|
|
Prune bool
|
|
}
|
|
|
|
var forgetOptions ForgetOptions
|
|
|
|
func init() {
|
|
cmdRoot.AddCommand(cmdForget)
|
|
|
|
f := cmdForget.Flags()
|
|
f.IntVarP(&forgetOptions.Last, "keep-last", "l", 0, "keep the last `n` snapshots")
|
|
f.IntVarP(&forgetOptions.Hourly, "keep-hourly", "H", 0, "keep the last `n` hourly snapshots")
|
|
f.IntVarP(&forgetOptions.Daily, "keep-daily", "d", 0, "keep the last `n` daily snapshots")
|
|
f.IntVarP(&forgetOptions.Weekly, "keep-weekly", "w", 0, "keep the last `n` weekly snapshots")
|
|
f.IntVarP(&forgetOptions.Monthly, "keep-monthly", "m", 0, "keep the last `n` monthly snapshots")
|
|
f.IntVarP(&forgetOptions.Yearly, "keep-yearly", "y", 0, "keep the last `n` yearly snapshots")
|
|
f.VarP(&forgetOptions.Within, "keep-within", "", "keep snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
f.VarP(&forgetOptions.WithinHourly, "keep-within-hourly", "", "keep hourly snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
f.VarP(&forgetOptions.WithinDaily, "keep-within-daily", "", "keep daily snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
f.VarP(&forgetOptions.WithinWeekly, "keep-within-weekly", "", "keep weekly snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
f.VarP(&forgetOptions.WithinMonthly, "keep-within-monthly", "", "keep monthly snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
f.VarP(&forgetOptions.WithinYearly, "keep-within-yearly", "", "keep yearly snapshots that are newer than `duration` (eg. 1y5m7d2h) relative to the latest snapshot")
|
|
|
|
f.Var(&forgetOptions.KeepTags, "keep-tag", "keep snapshots with this `taglist` (can be specified multiple times)")
|
|
f.StringArrayVar(&forgetOptions.Hosts, "host", nil, "only consider snapshots with the given `host` (can be specified multiple times)")
|
|
f.StringArrayVar(&forgetOptions.Hosts, "hostname", nil, "only consider snapshots with the given `hostname` (can be specified multiple times)")
|
|
err := f.MarkDeprecated("hostname", "use --host")
|
|
if err != nil {
|
|
// MarkDeprecated only returns an error when the flag is not found
|
|
panic(err)
|
|
}
|
|
|
|
f.Var(&forgetOptions.Tags, "tag", "only consider snapshots which include this `taglist` in the format `tag[,tag,...]` (can be specified multiple times)")
|
|
|
|
f.StringArrayVar(&forgetOptions.Paths, "path", nil, "only consider snapshots which include this (absolute) `path` (can be specified multiple times)")
|
|
f.BoolVarP(&forgetOptions.Compact, "compact", "c", false, "use compact output format")
|
|
|
|
f.StringVarP(&forgetOptions.GroupBy, "group-by", "g", "host,paths", "string for grouping snapshots by host,paths,tags")
|
|
f.BoolVarP(&forgetOptions.DryRun, "dry-run", "n", false, "do not delete anything, just print what would be done")
|
|
f.BoolVar(&forgetOptions.Prune, "prune", false, "automatically run the 'prune' command if snapshots have been removed")
|
|
|
|
f.SortFlags = false
|
|
addPruneOptions(cmdForget)
|
|
}
|
|
|
|
func runForget(opts ForgetOptions, gopts GlobalOptions, args []string) error {
|
|
err := verifyPruneOptions(&pruneOptions)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
repo, err := OpenRepository(gopts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if gopts.NoLock && !opts.DryRun {
|
|
return errors.Fatal("--no-lock is only applicable in combination with --dry-run for forget command")
|
|
}
|
|
|
|
if !opts.DryRun || !gopts.NoLock {
|
|
lock, err := lockRepoExclusive(gopts.ctx, repo)
|
|
defer unlockRepo(lock)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
ctx, cancel := context.WithCancel(gopts.ctx)
|
|
defer cancel()
|
|
|
|
var snapshots restic.Snapshots
|
|
removeSnIDs := restic.NewIDSet()
|
|
|
|
for sn := range FindFilteredSnapshots(ctx, repo, opts.Hosts, opts.Tags, opts.Paths, args) {
|
|
snapshots = append(snapshots, sn)
|
|
}
|
|
|
|
var jsonGroups []*ForgetGroup
|
|
|
|
if len(args) > 0 {
|
|
// When explicit snapshots args are given, remove them immediately.
|
|
for _, sn := range snapshots {
|
|
removeSnIDs.Insert(*sn.ID())
|
|
}
|
|
} else {
|
|
snapshotGroups, _, err := restic.GroupSnapshots(snapshots, opts.GroupBy)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
policy := restic.ExpirePolicy{
|
|
Last: opts.Last,
|
|
Hourly: opts.Hourly,
|
|
Daily: opts.Daily,
|
|
Weekly: opts.Weekly,
|
|
Monthly: opts.Monthly,
|
|
Yearly: opts.Yearly,
|
|
Within: opts.Within,
|
|
WithinHourly: opts.WithinHourly,
|
|
WithinDaily: opts.WithinDaily,
|
|
WithinWeekly: opts.WithinWeekly,
|
|
WithinMonthly: opts.WithinMonthly,
|
|
WithinYearly: opts.WithinYearly,
|
|
Tags: opts.KeepTags,
|
|
}
|
|
|
|
if policy.Empty() && len(args) == 0 {
|
|
if !gopts.JSON {
|
|
Verbosef("no policy was specified, no snapshots will be removed\n")
|
|
}
|
|
}
|
|
|
|
if !policy.Empty() {
|
|
if !gopts.JSON {
|
|
Verbosef("Applying Policy: %v\n", policy)
|
|
}
|
|
|
|
for k, snapshotGroup := range snapshotGroups {
|
|
if gopts.Verbose >= 1 && !gopts.JSON {
|
|
err = PrintSnapshotGroupHeader(gopts.stdout, k)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
var key restic.SnapshotGroupKey
|
|
if json.Unmarshal([]byte(k), &key) != nil {
|
|
return err
|
|
}
|
|
|
|
var fg ForgetGroup
|
|
fg.Tags = key.Tags
|
|
fg.Host = key.Hostname
|
|
fg.Paths = key.Paths
|
|
|
|
keep, remove, reasons := restic.ApplyPolicy(snapshotGroup, policy)
|
|
|
|
if len(keep) != 0 && !gopts.Quiet && !gopts.JSON {
|
|
Printf("keep %d snapshots:\n", len(keep))
|
|
PrintSnapshots(globalOptions.stdout, keep, reasons, opts.Compact)
|
|
Printf("\n")
|
|
}
|
|
addJSONSnapshots(&fg.Keep, keep)
|
|
|
|
if len(remove) != 0 && !gopts.Quiet && !gopts.JSON {
|
|
Printf("remove %d snapshots:\n", len(remove))
|
|
PrintSnapshots(globalOptions.stdout, remove, nil, opts.Compact)
|
|
Printf("\n")
|
|
}
|
|
addJSONSnapshots(&fg.Remove, remove)
|
|
|
|
fg.Reasons = reasons
|
|
|
|
jsonGroups = append(jsonGroups, &fg)
|
|
|
|
for _, sn := range remove {
|
|
removeSnIDs.Insert(*sn.ID())
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(removeSnIDs) > 0 {
|
|
if !opts.DryRun {
|
|
err := DeleteFilesChecked(gopts, repo, removeSnIDs, restic.SnapshotFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
if !gopts.JSON {
|
|
Printf("Would have removed the following snapshots:\n%v\n\n", removeSnIDs)
|
|
}
|
|
}
|
|
}
|
|
|
|
if gopts.JSON && len(jsonGroups) > 0 {
|
|
err = printJSONForget(gopts.stdout, jsonGroups)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if len(removeSnIDs) > 0 && opts.Prune {
|
|
if !gopts.JSON {
|
|
Verbosef("%d snapshots have been removed, running prune\n", len(removeSnIDs))
|
|
}
|
|
pruneOptions.DryRun = opts.DryRun
|
|
return runPruneWithRepo(pruneOptions, gopts, repo, removeSnIDs)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ForgetGroup helps to print what is forgotten in JSON.
|
|
type ForgetGroup struct {
|
|
Tags []string `json:"tags"`
|
|
Host string `json:"host"`
|
|
Paths []string `json:"paths"`
|
|
Keep []Snapshot `json:"keep"`
|
|
Remove []Snapshot `json:"remove"`
|
|
Reasons []restic.KeepReason `json:"reasons"`
|
|
}
|
|
|
|
func addJSONSnapshots(js *[]Snapshot, list restic.Snapshots) {
|
|
for _, sn := range list {
|
|
k := Snapshot{
|
|
Snapshot: sn,
|
|
ID: sn.ID(),
|
|
ShortID: sn.ID().Str(),
|
|
}
|
|
*js = append(*js, k)
|
|
}
|
|
}
|
|
|
|
func printJSONForget(stdout io.Writer, forgets []*ForgetGroup) error {
|
|
return json.NewEncoder(stdout).Encode(forgets)
|
|
}
|