2015-05-09 21:52:03 +00:00
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package repository
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2015-04-26 15:10:31 +00:00
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import (
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2017-06-04 09:16:55 +00:00
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"context"
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2015-04-26 15:10:31 +00:00
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"encoding/json"
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"io"
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"sync"
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2015-10-12 21:59:17 +00:00
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"time"
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2015-04-26 15:10:31 +00:00
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2017-07-23 12:21:03 +00:00
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"github.com/restic/restic/internal/errors"
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2017-07-24 15:42:25 +00:00
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"github.com/restic/restic/internal/restic"
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2017-07-23 12:21:03 +00:00
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"github.com/restic/restic/internal/debug"
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2015-04-26 15:10:31 +00:00
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)
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// Index holds a lookup table for id -> pack.
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type Index struct {
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2017-09-23 12:47:40 +00:00
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m sync.Mutex
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pack map[restic.BlobHandle][]indexEntry
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treePacks restic.IDs
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2015-08-08 10:22:17 +00:00
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2016-08-31 18:29:54 +00:00
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final bool // set to true for all indexes read from the backend ("finalized")
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id restic.ID // set to the ID of the index when it's finalized
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supersedes restic.IDs
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2015-10-12 21:59:17 +00:00
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created time.Time
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2015-04-26 15:10:31 +00:00
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}
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type indexEntry struct {
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2016-08-31 18:29:54 +00:00
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packID restic.ID
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2015-04-26 15:10:31 +00:00
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offset uint
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length uint
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}
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// NewIndex returns a new index.
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func NewIndex() *Index {
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return &Index{
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2016-08-31 18:58:57 +00:00
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pack: make(map[restic.BlobHandle][]indexEntry),
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2015-10-12 21:59:17 +00:00
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created: time.Now(),
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2015-04-26 15:10:31 +00:00
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}
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}
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2016-08-31 20:39:36 +00:00
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func (idx *Index) store(blob restic.PackedBlob) {
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2016-08-03 20:38:05 +00:00
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newEntry := indexEntry{
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2015-11-02 18:05:19 +00:00
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packID: blob.PackID,
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offset: blob.Offset,
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length: blob.Length,
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2016-08-03 20:38:05 +00:00
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}
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2016-08-31 18:58:57 +00:00
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h := restic.BlobHandle{ID: blob.ID, Type: blob.Type}
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2016-08-03 20:38:05 +00:00
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idx.pack[h] = append(idx.pack[h], newEntry)
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2015-04-26 15:10:31 +00:00
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}
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2015-10-12 20:34:12 +00:00
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// Final returns true iff the index is already written to the repository, it is
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// finalized.
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func (idx *Index) Final() bool {
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idx.m.Lock()
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defer idx.m.Unlock()
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return idx.final
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}
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2015-10-12 21:59:17 +00:00
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const (
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2020-05-24 07:19:42 +00:00
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indexMaxBlobs = 50000
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indexMaxAge = 10 * time.Minute
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2015-10-12 21:59:17 +00:00
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)
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2015-10-25 14:05:22 +00:00
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// IndexFull returns true iff the index is "full enough" to be saved as a preliminary index.
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var IndexFull = func(idx *Index) bool {
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2015-10-12 21:59:17 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2016-09-27 20:35:08 +00:00
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debug.Log("checking whether index %p is full", idx)
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2015-10-12 21:59:17 +00:00
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2020-05-24 07:19:42 +00:00
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blobs := len(idx.pack)
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2015-10-12 21:59:17 +00:00
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age := time.Now().Sub(idx.created)
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2020-05-24 07:19:42 +00:00
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switch {
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case age >= indexMaxAge:
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2016-09-27 20:35:08 +00:00
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debug.Log("index %p is old enough", idx, age)
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2015-10-12 21:59:17 +00:00
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return true
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2020-05-24 07:19:42 +00:00
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case blobs >= indexMaxBlobs:
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debug.Log("index %p has %d blobs", idx, blobs)
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2015-10-12 21:59:17 +00:00
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return true
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}
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2020-05-24 07:19:42 +00:00
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debug.Log("index %p only has %d blobs and is too young (%v)", idx, blobs, age)
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2015-10-12 21:59:17 +00:00
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return false
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2020-05-24 07:19:42 +00:00
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2015-10-12 21:59:17 +00:00
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}
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2015-09-23 20:27:48 +00:00
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// Store remembers the id and pack in the index. An existing entry will be
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// silently overwritten.
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2016-08-31 20:39:36 +00:00
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func (idx *Index) Store(blob restic.PackedBlob) {
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2015-04-26 15:10:31 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2015-10-12 20:34:12 +00:00
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if idx.final {
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panic("store new item in finalized index")
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}
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2016-09-27 20:35:08 +00:00
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debug.Log("%v", blob)
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2015-04-26 15:10:31 +00:00
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2015-11-02 18:05:19 +00:00
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idx.store(blob)
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2015-04-26 15:10:31 +00:00
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}
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2016-08-31 20:39:36 +00:00
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// Lookup queries the index for the blob ID and returns a restic.PackedBlob.
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2018-01-12 06:20:12 +00:00
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func (idx *Index) Lookup(id restic.ID, tpe restic.BlobType) (blobs []restic.PackedBlob, found bool) {
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2015-04-26 15:10:31 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2016-08-31 18:58:57 +00:00
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h := restic.BlobHandle{ID: id, Type: tpe}
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2016-08-03 20:38:05 +00:00
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if packs, ok := idx.pack[h]; ok {
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2016-08-31 20:39:36 +00:00
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blobs = make([]restic.PackedBlob, 0, len(packs))
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2016-08-03 20:38:05 +00:00
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for _, p := range packs {
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2016-08-31 20:39:36 +00:00
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blob := restic.PackedBlob{
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Blob: restic.Blob{
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Type: tpe,
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Length: p.length,
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ID: id,
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Offset: p.offset,
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},
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2016-08-03 20:38:05 +00:00
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PackID: p.packID,
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}
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blobs = append(blobs, blob)
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2015-10-31 13:47:42 +00:00
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}
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2016-08-03 20:38:05 +00:00
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2018-01-12 06:20:12 +00:00
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return blobs, true
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2015-04-26 15:10:31 +00:00
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}
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2018-01-12 06:20:12 +00:00
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return nil, false
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2015-04-26 15:10:31 +00:00
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}
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2015-11-01 21:32:28 +00:00
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// ListPack returns a list of blobs contained in a pack.
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2016-08-31 20:39:36 +00:00
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func (idx *Index) ListPack(id restic.ID) (list []restic.PackedBlob) {
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2015-11-01 21:32:28 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2016-08-03 20:38:05 +00:00
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for h, packList := range idx.pack {
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2016-08-03 18:03:52 +00:00
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for _, entry := range packList {
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if entry.packID == id {
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2016-08-31 20:39:36 +00:00
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list = append(list, restic.PackedBlob{
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Blob: restic.Blob{
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ID: h.ID,
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Type: h.Type,
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Length: entry.length,
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Offset: entry.offset,
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},
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2016-08-03 18:03:52 +00:00
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PackID: entry.packID,
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})
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}
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2015-11-01 21:32:28 +00:00
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}
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}
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return list
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}
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2015-04-26 15:10:31 +00:00
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// Has returns true iff the id is listed in the index.
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2016-08-31 18:58:57 +00:00
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func (idx *Index) Has(id restic.ID, tpe restic.BlobType) bool {
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2018-01-08 18:38:21 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2015-04-26 15:10:31 +00:00
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2018-01-08 18:38:21 +00:00
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h := restic.BlobHandle{ID: id, Type: tpe}
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_, ok := idx.pack[h]
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return ok
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2015-04-26 15:10:31 +00:00
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}
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2017-01-13 11:57:05 +00:00
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// LookupSize returns the length of the plaintext content of the blob with the
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// given id.
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2018-01-12 06:20:12 +00:00
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func (idx *Index) LookupSize(id restic.ID, tpe restic.BlobType) (plaintextLength uint, found bool) {
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blobs, found := idx.Lookup(id, tpe)
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if !found {
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return 0, found
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2015-07-19 13:16:16 +00:00
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}
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2016-08-03 20:38:05 +00:00
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2018-01-12 06:20:12 +00:00
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return uint(restic.PlaintextLength(int(blobs[0].Length))), true
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2015-07-19 13:16:16 +00:00
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}
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2015-08-08 10:22:17 +00:00
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// Supersedes returns the list of indexes this index supersedes, if any.
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2016-08-31 18:29:54 +00:00
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func (idx *Index) Supersedes() restic.IDs {
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2015-08-08 10:22:17 +00:00
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return idx.supersedes
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}
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2015-10-25 16:06:56 +00:00
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// AddToSupersedes adds the ids to the list of indexes superseded by this
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// index. If the index has already been finalized, an error is returned.
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2016-08-31 18:29:54 +00:00
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func (idx *Index) AddToSupersedes(ids ...restic.ID) error {
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2015-10-25 16:06:56 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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if idx.final {
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return errors.New("index already finalized")
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}
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idx.supersedes = append(idx.supersedes, ids...)
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return nil
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}
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2017-06-18 12:45:02 +00:00
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// Each returns a channel that yields all blobs known to the index. When the
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// context is cancelled, the background goroutine terminates. This blocks any
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// modification of the index.
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func (idx *Index) Each(ctx context.Context) <-chan restic.PackedBlob {
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2015-04-26 15:10:31 +00:00
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idx.m.Lock()
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2016-08-31 20:39:36 +00:00
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ch := make(chan restic.PackedBlob)
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2015-04-26 15:10:31 +00:00
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go func() {
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defer idx.m.Unlock()
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defer func() {
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close(ch)
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}()
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2016-08-03 20:38:05 +00:00
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for h, packs := range idx.pack {
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2016-08-03 18:03:52 +00:00
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for _, blob := range packs {
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select {
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2017-06-18 12:45:02 +00:00
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case <-ctx.Done():
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2016-08-03 18:03:52 +00:00
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return
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2016-08-31 20:39:36 +00:00
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case ch <- restic.PackedBlob{
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Blob: restic.Blob{
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ID: h.ID,
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Type: h.Type,
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Offset: blob.offset,
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Length: blob.length,
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},
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2016-08-03 18:03:52 +00:00
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PackID: blob.packID,
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}:
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}
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2015-04-26 15:10:31 +00:00
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}
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}
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}()
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return ch
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}
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2015-10-25 14:28:01 +00:00
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// Packs returns all packs in this index
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2016-08-31 18:29:54 +00:00
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func (idx *Index) Packs() restic.IDSet {
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2015-10-25 14:28:01 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2016-08-31 18:29:54 +00:00
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packs := restic.NewIDSet()
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2016-08-03 18:03:52 +00:00
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for _, list := range idx.pack {
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for _, entry := range list {
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packs.Insert(entry.packID)
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}
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2015-10-25 14:28:01 +00:00
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}
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return packs
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}
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2015-04-26 15:44:38 +00:00
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// Count returns the number of blobs of type t in the index.
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2016-08-31 18:58:57 +00:00
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func (idx *Index) Count(t restic.BlobType) (n uint) {
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2016-09-27 20:35:08 +00:00
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debug.Log("counting blobs of type %v", t)
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2015-04-26 15:44:38 +00:00
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idx.m.Lock()
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defer idx.m.Unlock()
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2016-08-03 20:38:05 +00:00
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for h, list := range idx.pack {
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if h.Type != t {
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continue
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2015-04-26 15:44:38 +00:00
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}
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2016-08-03 20:38:05 +00:00
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n += uint(len(list))
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2015-04-26 15:44:38 +00:00
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}
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return
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}
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2015-04-26 15:10:31 +00:00
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type packJSON struct {
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2016-08-31 18:29:54 +00:00
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ID restic.ID `json:"id"`
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2015-04-26 15:10:31 +00:00
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Blobs []blobJSON `json:"blobs"`
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}
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type blobJSON struct {
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2016-08-31 18:58:57 +00:00
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ID restic.ID `json:"id"`
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Type restic.BlobType `json:"type"`
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Offset uint `json:"offset"`
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Length uint `json:"length"`
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2015-04-26 15:10:31 +00:00
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}
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2015-10-25 13:25:48 +00:00
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// generatePackList returns a list of packs.
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func (idx *Index) generatePackList() ([]*packJSON, error) {
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2015-04-26 15:10:31 +00:00
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list := []*packJSON{}
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2016-08-31 18:29:54 +00:00
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packs := make(map[restic.ID]*packJSON)
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2015-04-26 15:10:31 +00:00
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2016-08-03 20:38:05 +00:00
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for h, packedBlobs := range idx.pack {
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2016-08-03 18:03:52 +00:00
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for _, blob := range packedBlobs {
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if blob.packID.IsNull() {
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panic("null pack id")
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}
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2015-10-11 18:45:42 +00:00
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2016-09-27 20:35:08 +00:00
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debug.Log("handle blob %v", h)
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2015-04-26 15:44:38 +00:00
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2016-08-03 18:03:52 +00:00
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if blob.packID.IsNull() {
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2016-09-27 20:35:08 +00:00
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debug.Log("blob %v has no packID! (offset %v, length %v)",
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2016-08-03 20:38:05 +00:00
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h, blob.offset, blob.length)
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2016-08-21 15:48:36 +00:00
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return nil, errors.Errorf("unable to serialize index: pack for blob %v hasn't been written yet", h)
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2016-08-03 18:03:52 +00:00
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}
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2015-04-26 15:44:38 +00:00
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2016-08-03 18:03:52 +00:00
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|
|
// see if pack is already in map
|
|
|
|
p, ok := packs[blob.packID]
|
|
|
|
if !ok {
|
|
|
|
// else create new pack
|
|
|
|
p = &packJSON{ID: blob.packID}
|
2015-04-26 15:10:31 +00:00
|
|
|
|
2016-08-03 18:03:52 +00:00
|
|
|
// and append it to the list and map
|
|
|
|
list = append(list, p)
|
|
|
|
packs[p.ID] = p
|
|
|
|
}
|
2015-04-26 15:10:31 +00:00
|
|
|
|
2016-08-03 18:03:52 +00:00
|
|
|
// add blob
|
|
|
|
p.Blobs = append(p.Blobs, blobJSON{
|
2016-08-03 20:38:05 +00:00
|
|
|
ID: h.ID,
|
|
|
|
Type: h.Type,
|
2016-08-03 18:03:52 +00:00
|
|
|
Offset: blob.offset,
|
|
|
|
Length: blob.length,
|
|
|
|
})
|
|
|
|
}
|
2015-04-26 15:10:31 +00:00
|
|
|
}
|
|
|
|
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("done")
|
2015-05-16 12:05:19 +00:00
|
|
|
|
|
|
|
return list, nil
|
|
|
|
}
|
|
|
|
|
2015-07-25 22:40:00 +00:00
|
|
|
type jsonIndex struct {
|
2016-08-31 18:29:54 +00:00
|
|
|
Supersedes restic.IDs `json:"supersedes,omitempty"`
|
2015-08-08 10:22:17 +00:00
|
|
|
Packs []*packJSON `json:"packs"`
|
2015-07-25 22:40:00 +00:00
|
|
|
}
|
|
|
|
|
2015-10-12 20:34:12 +00:00
|
|
|
// Encode writes the JSON serialization of the index to the writer w.
|
|
|
|
func (idx *Index) Encode(w io.Writer) error {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("encoding index")
|
2015-10-12 20:34:12 +00:00
|
|
|
idx.m.Lock()
|
|
|
|
defer idx.m.Unlock()
|
|
|
|
|
|
|
|
return idx.encode(w)
|
|
|
|
}
|
|
|
|
|
|
|
|
// encode writes the JSON serialization of the index to the writer w.
|
|
|
|
func (idx *Index) encode(w io.Writer) error {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("encoding index")
|
2015-10-12 20:34:12 +00:00
|
|
|
|
2015-10-25 13:25:48 +00:00
|
|
|
list, err := idx.generatePackList()
|
2015-05-16 12:05:19 +00:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
2015-04-26 15:10:31 +00:00
|
|
|
enc := json.NewEncoder(w)
|
2015-07-25 22:40:00 +00:00
|
|
|
idxJSON := jsonIndex{
|
2015-10-12 20:34:12 +00:00
|
|
|
Supersedes: idx.supersedes,
|
2015-07-25 22:40:00 +00:00
|
|
|
Packs: list,
|
|
|
|
}
|
|
|
|
return enc.Encode(idxJSON)
|
2015-04-26 15:10:31 +00:00
|
|
|
}
|
|
|
|
|
2015-10-12 20:34:12 +00:00
|
|
|
// Finalize sets the index to final and writes the JSON serialization to w.
|
|
|
|
func (idx *Index) Finalize(w io.Writer) error {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("encoding index")
|
2015-05-16 12:05:19 +00:00
|
|
|
idx.m.Lock()
|
|
|
|
defer idx.m.Unlock()
|
|
|
|
|
2015-10-12 20:34:12 +00:00
|
|
|
idx.final = true
|
|
|
|
|
|
|
|
return idx.encode(w)
|
2015-05-16 12:05:19 +00:00
|
|
|
}
|
|
|
|
|
2015-11-02 17:51:45 +00:00
|
|
|
// ID returns the ID of the index, if available. If the index is not yet
|
|
|
|
// finalized, an error is returned.
|
2016-08-31 18:29:54 +00:00
|
|
|
func (idx *Index) ID() (restic.ID, error) {
|
2015-11-02 17:51:45 +00:00
|
|
|
idx.m.Lock()
|
|
|
|
defer idx.m.Unlock()
|
|
|
|
|
|
|
|
if !idx.final {
|
2016-08-31 18:29:54 +00:00
|
|
|
return restic.ID{}, errors.New("index not finalized")
|
2015-11-02 17:51:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return idx.id, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// SetID sets the ID the index has been written to. This requires that
|
|
|
|
// Finalize() has been called before, otherwise an error is returned.
|
2016-08-31 18:29:54 +00:00
|
|
|
func (idx *Index) SetID(id restic.ID) error {
|
2015-11-02 17:51:45 +00:00
|
|
|
idx.m.Lock()
|
|
|
|
defer idx.m.Unlock()
|
|
|
|
|
|
|
|
if !idx.final {
|
2017-02-08 23:43:10 +00:00
|
|
|
return errors.New("index is not final")
|
2015-11-02 17:51:45 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if !idx.id.IsNull() {
|
|
|
|
return errors.New("ID already set")
|
|
|
|
}
|
|
|
|
|
2018-01-25 19:49:41 +00:00
|
|
|
debug.Log("ID set to %v", id)
|
2015-11-02 17:51:45 +00:00
|
|
|
idx.id = id
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2015-05-16 12:05:19 +00:00
|
|
|
// Dump writes the pretty-printed JSON representation of the index to w.
|
|
|
|
func (idx *Index) Dump(w io.Writer) error {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("dumping index")
|
2015-05-16 12:05:19 +00:00
|
|
|
idx.m.Lock()
|
|
|
|
defer idx.m.Unlock()
|
|
|
|
|
2015-10-25 13:25:48 +00:00
|
|
|
list, err := idx.generatePackList()
|
2015-05-16 12:05:19 +00:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
2015-11-02 18:28:30 +00:00
|
|
|
outer := jsonIndex{
|
|
|
|
Supersedes: idx.Supersedes(),
|
|
|
|
Packs: list,
|
|
|
|
}
|
|
|
|
|
|
|
|
buf, err := json.MarshalIndent(outer, "", " ")
|
2015-05-16 12:05:19 +00:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
_, err = w.Write(append(buf, '\n'))
|
|
|
|
if err != nil {
|
2016-08-29 20:16:58 +00:00
|
|
|
return errors.Wrap(err, "Write")
|
2015-05-16 12:05:19 +00:00
|
|
|
}
|
|
|
|
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("done")
|
2015-05-16 12:05:19 +00:00
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2017-09-23 12:47:40 +00:00
|
|
|
// TreePacks returns a list of packs that contain only tree blobs.
|
|
|
|
func (idx *Index) TreePacks() restic.IDs {
|
|
|
|
return idx.treePacks
|
|
|
|
}
|
|
|
|
|
2015-07-26 19:58:03 +00:00
|
|
|
// isErrOldIndex returns true if the error may be caused by an old index
|
|
|
|
// format.
|
|
|
|
func isErrOldIndex(err error) bool {
|
|
|
|
if e, ok := err.(*json.UnmarshalTypeError); ok && e.Value == "array" {
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
|
|
|
|
// ErrOldIndexFormat means an index with the old format was detected.
|
|
|
|
var ErrOldIndexFormat = errors.New("index has old format")
|
|
|
|
|
2015-04-26 15:10:31 +00:00
|
|
|
// DecodeIndex loads and unserializes an index from rd.
|
2017-01-13 21:05:34 +00:00
|
|
|
func DecodeIndex(buf []byte) (idx *Index, err error) {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("Start decoding index")
|
2017-01-13 21:05:34 +00:00
|
|
|
idxJSON := &jsonIndex{}
|
2015-07-25 22:40:00 +00:00
|
|
|
|
2017-01-13 21:05:34 +00:00
|
|
|
err = json.Unmarshal(buf, idxJSON)
|
2015-07-25 22:40:00 +00:00
|
|
|
if err != nil {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("Error %v", err)
|
2015-07-26 19:58:03 +00:00
|
|
|
|
|
|
|
if isErrOldIndex(err) {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("index is probably old format, trying that")
|
2015-07-26 19:58:03 +00:00
|
|
|
err = ErrOldIndexFormat
|
|
|
|
}
|
|
|
|
|
2016-08-29 20:16:58 +00:00
|
|
|
return nil, errors.Wrap(err, "Decode")
|
2015-07-25 22:40:00 +00:00
|
|
|
}
|
|
|
|
|
2015-08-08 10:22:17 +00:00
|
|
|
idx = NewIndex()
|
2015-07-25 22:40:00 +00:00
|
|
|
for _, pack := range idxJSON.Packs {
|
2017-09-23 12:47:40 +00:00
|
|
|
var data, tree bool
|
|
|
|
|
2015-07-25 22:40:00 +00:00
|
|
|
for _, blob := range pack.Blobs {
|
2016-08-31 20:39:36 +00:00
|
|
|
idx.store(restic.PackedBlob{
|
|
|
|
Blob: restic.Blob{
|
|
|
|
Type: blob.Type,
|
|
|
|
ID: blob.ID,
|
|
|
|
Offset: blob.Offset,
|
|
|
|
Length: blob.Length,
|
|
|
|
},
|
2015-11-02 18:05:19 +00:00
|
|
|
PackID: pack.ID,
|
|
|
|
})
|
2017-09-23 12:47:40 +00:00
|
|
|
|
|
|
|
switch blob.Type {
|
|
|
|
case restic.DataBlob:
|
|
|
|
data = true
|
|
|
|
case restic.TreeBlob:
|
|
|
|
tree = true
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if !data && tree {
|
|
|
|
idx.treePacks = append(idx.treePacks, pack.ID)
|
2015-07-25 22:40:00 +00:00
|
|
|
}
|
|
|
|
}
|
2015-08-08 10:22:17 +00:00
|
|
|
idx.supersedes = idxJSON.Supersedes
|
2015-10-12 20:34:12 +00:00
|
|
|
idx.final = true
|
2015-07-25 22:40:00 +00:00
|
|
|
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("done")
|
2016-08-29 20:16:58 +00:00
|
|
|
return idx, nil
|
2015-07-25 22:40:00 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// DecodeOldIndex loads and unserializes an index in the old format from rd.
|
2017-01-13 21:05:34 +00:00
|
|
|
func DecodeOldIndex(buf []byte) (idx *Index, err error) {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("Start decoding old index")
|
2015-04-26 15:10:31 +00:00
|
|
|
list := []*packJSON{}
|
|
|
|
|
2017-01-13 21:05:34 +00:00
|
|
|
err = json.Unmarshal(buf, &list)
|
2015-04-26 15:10:31 +00:00
|
|
|
if err != nil {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("Error %#v", err)
|
2016-08-29 20:16:58 +00:00
|
|
|
return nil, errors.Wrap(err, "Decode")
|
2015-04-26 15:10:31 +00:00
|
|
|
}
|
|
|
|
|
2015-08-08 10:22:17 +00:00
|
|
|
idx = NewIndex()
|
2015-04-26 15:10:31 +00:00
|
|
|
for _, pack := range list {
|
2017-09-23 12:47:40 +00:00
|
|
|
var data, tree bool
|
|
|
|
|
2015-04-26 15:10:31 +00:00
|
|
|
for _, blob := range pack.Blobs {
|
2016-08-31 20:39:36 +00:00
|
|
|
idx.store(restic.PackedBlob{
|
|
|
|
Blob: restic.Blob{
|
|
|
|
Type: blob.Type,
|
|
|
|
ID: blob.ID,
|
|
|
|
Offset: blob.Offset,
|
|
|
|
Length: blob.Length,
|
|
|
|
},
|
2015-11-02 18:05:19 +00:00
|
|
|
PackID: pack.ID,
|
|
|
|
})
|
2017-09-23 12:47:40 +00:00
|
|
|
|
|
|
|
switch blob.Type {
|
|
|
|
case restic.DataBlob:
|
|
|
|
data = true
|
|
|
|
case restic.TreeBlob:
|
|
|
|
tree = true
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if !data && tree {
|
|
|
|
idx.treePacks = append(idx.treePacks, pack.ID)
|
2015-04-26 15:10:31 +00:00
|
|
|
}
|
|
|
|
}
|
2015-11-08 21:21:29 +00:00
|
|
|
idx.final = true
|
2015-04-26 15:10:31 +00:00
|
|
|
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("done")
|
2016-08-29 20:16:58 +00:00
|
|
|
return idx, nil
|
2015-08-08 10:22:17 +00:00
|
|
|
}
|
|
|
|
|
2015-11-02 17:51:24 +00:00
|
|
|
// LoadIndexWithDecoder loads the index and decodes it with fn.
|
2019-03-24 21:12:38 +00:00
|
|
|
func LoadIndexWithDecoder(ctx context.Context, repo restic.Repository, buf []byte, id restic.ID, fn func([]byte) (*Index, error)) (*Index, []byte, error) {
|
2018-01-25 19:49:41 +00:00
|
|
|
debug.Log("Loading index %v", id)
|
2015-11-02 17:51:24 +00:00
|
|
|
|
2019-03-24 21:12:38 +00:00
|
|
|
buf, err := repo.LoadAndDecrypt(ctx, buf[:0], restic.IndexFile, id)
|
2015-11-02 17:51:24 +00:00
|
|
|
if err != nil {
|
2019-03-24 21:12:38 +00:00
|
|
|
return nil, buf[:0], err
|
2015-11-02 17:51:24 +00:00
|
|
|
}
|
|
|
|
|
2019-03-24 21:12:38 +00:00
|
|
|
idx, err := fn(buf)
|
2015-11-02 17:51:24 +00:00
|
|
|
if err != nil {
|
2016-09-27 20:35:08 +00:00
|
|
|
debug.Log("error while decoding index %v: %v", id, err)
|
2019-03-24 21:12:38 +00:00
|
|
|
return nil, buf[:0], err
|
2015-11-02 17:51:24 +00:00
|
|
|
}
|
|
|
|
|
2016-02-24 21:41:32 +00:00
|
|
|
idx.id = id
|
2015-11-02 17:51:24 +00:00
|
|
|
|
2019-03-24 21:12:38 +00:00
|
|
|
return idx, buf, nil
|
2015-11-02 17:51:24 +00:00
|
|
|
}
|