mirror of
https://github.com/octoleo/restic.git
synced 2024-11-02 11:46:36 +00:00
Add tag
: Manipulate tags on existing snapshots
Add integration testing.
This commit is contained in:
parent
db08581352
commit
f6a258b4a8
189
src/cmds/restic/cmd_tag.go
Normal file
189
src/cmds/restic/cmd_tag.go
Normal file
@ -0,0 +1,189 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/spf13/cobra"
|
||||
|
||||
"restic"
|
||||
"restic/debug"
|
||||
"restic/errors"
|
||||
"restic/repository"
|
||||
)
|
||||
|
||||
var cmdTag = &cobra.Command{
|
||||
Use: "tag [flags] [snapshot-ID ...]",
|
||||
Short: "modifies tags on snapshots",
|
||||
Long: `
|
||||
The "tag" command allows you to modify tags on exiting snapshots.
|
||||
|
||||
You can either set/replace the entire set of tags on a snapshot, or
|
||||
add tags to/remove tags from the existing set.
|
||||
|
||||
When no snapshot-ID is given, all snapshots matching the host, tag and path filter criteria are modified.
|
||||
`,
|
||||
RunE: func(cmd *cobra.Command, args []string) error {
|
||||
return runTag(tagOptions, globalOptions, args)
|
||||
},
|
||||
}
|
||||
|
||||
// TagOptions bundles all options for the 'tag' command.
|
||||
type TagOptions struct {
|
||||
Host string
|
||||
Paths []string
|
||||
Tags []string
|
||||
SetTags []string
|
||||
AddTags []string
|
||||
RemoveTags []string
|
||||
}
|
||||
|
||||
var tagOptions TagOptions
|
||||
|
||||
func init() {
|
||||
cmdRoot.AddCommand(cmdTag)
|
||||
|
||||
tagFlags := cmdTag.Flags()
|
||||
tagFlags.StringSliceVar(&tagOptions.SetTags, "set", nil, "`tag` which will replace the existing tags (can be given multiple times)")
|
||||
tagFlags.StringSliceVar(&tagOptions.AddTags, "add", nil, "`tag` which will be added to the existing tags (can be given multiple times)")
|
||||
tagFlags.StringSliceVar(&tagOptions.RemoveTags, "remove", nil, "`tag` which will be removed from the existing tags (can be given multiple times)")
|
||||
|
||||
tagFlags.StringVarP(&tagOptions.Host, "host", "H", "", `only consider snapshots for this host, when no snapshot ID is given`)
|
||||
tagFlags.StringSliceVar(&tagOptions.Tags, "tag", nil, "only consider snapshots which include this `tag`, when no snapshot-ID is given")
|
||||
tagFlags.StringSliceVar(&tagOptions.Paths, "path", nil, "only consider snapshots which include this (absolute) `path`, when no snapshot-ID is given")
|
||||
}
|
||||
|
||||
func changeTags(repo *repository.Repository, snapshotID restic.ID, setTags, addTags, removeTags, tags, paths []string, host string) (bool, error) {
|
||||
var changed bool
|
||||
|
||||
sn, err := restic.LoadSnapshot(repo, snapshotID)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
if (host != "" && host != sn.Hostname) || !sn.HasTags(tags) || !restic.SamePaths(sn.Paths, paths) {
|
||||
return false, nil
|
||||
}
|
||||
|
||||
if len(setTags) != 0 {
|
||||
// Setting the tag to an empty string really means no more tags.
|
||||
if len(setTags) == 1 && setTags[0] == "" {
|
||||
setTags = nil
|
||||
}
|
||||
sn.Tags = setTags
|
||||
changed = true
|
||||
} else {
|
||||
for _, add := range addTags {
|
||||
found := false
|
||||
for _, tag := range sn.Tags {
|
||||
if tag == add {
|
||||
found = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
sn.Tags = append(sn.Tags, add)
|
||||
changed = true
|
||||
}
|
||||
}
|
||||
for _, remove := range removeTags {
|
||||
for i, tag := range sn.Tags {
|
||||
if tag == remove {
|
||||
// https://github.com/golang/go/wiki/SliceTricks
|
||||
sn.Tags[i] = sn.Tags[len(sn.Tags)-1]
|
||||
sn.Tags[len(sn.Tags)-1] = ""
|
||||
sn.Tags = sn.Tags[:len(sn.Tags)-1]
|
||||
|
||||
changed = true
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if changed {
|
||||
// Save the new snapshot.
|
||||
id, err := repo.SaveJSONUnpacked(restic.SnapshotFile, sn)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
debug.Log("new snapshot saved as %v", id.Str())
|
||||
|
||||
if err = repo.Flush(); err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
// Remove the old snapshot.
|
||||
h := restic.Handle{Type: restic.SnapshotFile, Name: sn.ID().String()}
|
||||
if err = repo.Backend().Remove(h); err != nil {
|
||||
return false, err
|
||||
}
|
||||
|
||||
debug.Log("old snapshot %v removed", sn.ID())
|
||||
}
|
||||
return changed, nil
|
||||
}
|
||||
|
||||
func runTag(opts TagOptions, gopts GlobalOptions, args []string) error {
|
||||
if len(opts.SetTags) == 0 && len(opts.AddTags) == 0 && len(opts.RemoveTags) == 0 {
|
||||
return errors.Fatal("nothing to do!")
|
||||
}
|
||||
if len(opts.SetTags) != 0 && (len(opts.AddTags) != 0 || len(opts.RemoveTags) != 0) {
|
||||
return errors.Fatal("--set and --add/--remove cannot be given at the same time")
|
||||
}
|
||||
|
||||
repo, err := OpenRepository(gopts)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !gopts.NoLock {
|
||||
Verbosef("Create exclusive lock for repository\n")
|
||||
lock, err := lockRepoExclusive(repo)
|
||||
defer unlockRepo(lock)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
var ids restic.IDs
|
||||
if len(args) != 0 {
|
||||
// When explit snapshot-IDs are given, the filtering does not matter anymore.
|
||||
opts.Host = ""
|
||||
opts.Tags = nil
|
||||
opts.Paths = nil
|
||||
|
||||
// Process all snapshot IDs given as arguments.
|
||||
for _, s := range args {
|
||||
snapshotID, err := restic.FindSnapshot(repo, s)
|
||||
if err != nil {
|
||||
Warnf("could not find a snapshot for ID %q, ignoring: %v\n", s, err)
|
||||
continue
|
||||
}
|
||||
ids = append(ids, snapshotID)
|
||||
}
|
||||
ids = ids.Uniq()
|
||||
} else {
|
||||
// If there were no arguments, just get all snapshots.
|
||||
done := make(chan struct{})
|
||||
defer close(done)
|
||||
for snapshotID := range repo.List(restic.SnapshotFile, done) {
|
||||
ids = append(ids, snapshotID)
|
||||
}
|
||||
}
|
||||
|
||||
changeCnt := 0
|
||||
for _, id := range ids {
|
||||
changed, err := changeTags(repo, id, opts.SetTags, opts.AddTags, opts.RemoveTags, opts.Tags, opts.Paths, opts.Host)
|
||||
if err != nil {
|
||||
Warnf("unable to modify the tags for snapshot ID %q, ignoring: %v\n", id, err)
|
||||
continue
|
||||
}
|
||||
if changed {
|
||||
changeCnt++
|
||||
}
|
||||
}
|
||||
if changeCnt == 0 {
|
||||
Verbosef("No snapshots were modified\n")
|
||||
} else {
|
||||
Verbosef("Modified tags on %v snapshots\n", changeCnt)
|
||||
}
|
||||
return nil
|
||||
}
|
@ -655,6 +655,62 @@ func TestBackupTags(t *testing.T) {
|
||||
})
|
||||
}
|
||||
|
||||
func testRunTag(t testing.TB, opts TagOptions, gopts GlobalOptions) {
|
||||
OK(t, runTag(opts, gopts, []string{}))
|
||||
}
|
||||
|
||||
func TestTag(t *testing.T) {
|
||||
withTestEnvironment(t, func(env *testEnvironment, gopts GlobalOptions) {
|
||||
datafile := filepath.Join("testdata", "backup-data.tar.gz")
|
||||
testRunInit(t, gopts)
|
||||
SetupTarTestFixture(t, env.testdata, datafile)
|
||||
|
||||
testRunBackup(t, []string{env.testdata}, BackupOptions{}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ := testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 0,
|
||||
"expected no tags, got %v", newest.Tags)
|
||||
|
||||
testRunTag(t, TagOptions{SetTags: []string{"NL"}}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ = testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 1 && newest.Tags[0] == "NL",
|
||||
"set failed, expected one NL tag, got %v", newest.Tags)
|
||||
|
||||
testRunTag(t, TagOptions{AddTags: []string{"CH"}}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ = testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 2 && newest.Tags[0] == "NL" && newest.Tags[1] == "CH",
|
||||
"add failed, expected CH,NL tags, got %v", newest.Tags)
|
||||
|
||||
testRunTag(t, TagOptions{RemoveTags: []string{"NL"}}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ = testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 1 && newest.Tags[0] == "CH",
|
||||
"remove failed, expected one CH tag, got %v", newest.Tags)
|
||||
|
||||
testRunTag(t, TagOptions{AddTags: []string{"US", "RU"}}, gopts)
|
||||
testRunTag(t, TagOptions{RemoveTags: []string{"CH", "US", "RU"}}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ = testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 0,
|
||||
"expected no tags, got %v", newest.Tags)
|
||||
|
||||
// Check special case of removing all tags.
|
||||
testRunTag(t, TagOptions{SetTags: []string{""}}, gopts)
|
||||
testRunCheck(t, gopts)
|
||||
newest, _ = testRunSnapshots(t, gopts)
|
||||
Assert(t, newest != nil, "expected a new backup, got nil")
|
||||
Assert(t, len(newest.Tags) == 0,
|
||||
"expected no tags, got %v", newest.Tags)
|
||||
})
|
||||
}
|
||||
|
||||
func testRunKeyListOtherIDs(t testing.TB, gopts GlobalOptions) []string {
|
||||
buf := bytes.NewBuffer(nil)
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user