mirror of https://github.com/octoleo/restic.git
405 lines
9.0 KiB
Go
405 lines
9.0 KiB
Go
package index
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import (
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"context"
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"math/rand"
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"testing"
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"time"
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"github.com/restic/restic/internal/checker"
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"github.com/restic/restic/internal/repository"
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"github.com/restic/restic/internal/restic"
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"github.com/restic/restic/internal/test"
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)
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var (
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snapshotTime = time.Unix(1470492820, 207401672)
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depth = 3
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)
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func createFilledRepo(t testing.TB, snapshots int, dup float32) (restic.Repository, func()) {
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repo, cleanup := repository.TestRepository(t)
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for i := 0; i < 3; i++ {
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restic.TestCreateSnapshot(t, repo, snapshotTime.Add(time.Duration(i)*time.Second), depth, dup)
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}
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return repo, cleanup
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}
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func validateIndex(t testing.TB, repo restic.Repository, idx *Index) {
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for id := range repo.List(context.TODO(), restic.DataFile) {
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p, ok := idx.Packs[id]
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if !ok {
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t.Errorf("pack %v missing from index", id.Str())
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}
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if !p.ID.Equal(id) {
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t.Errorf("pack %v has invalid ID: want %v, got %v", id.Str(), id, p.ID)
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}
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}
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}
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func TestIndexNew(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0)
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defer cleanup()
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idx, _, err := New(context.TODO(), repo, restic.NewIDSet(), nil)
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if err != nil {
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t.Fatalf("New() returned error %v", err)
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}
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if idx == nil {
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t.Fatalf("New() returned nil index")
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}
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validateIndex(t, repo, idx)
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}
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func TestIndexLoad(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0)
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defer cleanup()
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loadIdx, err := Load(context.TODO(), repo, nil)
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if err != nil {
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t.Fatalf("Load() returned error %v", err)
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}
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if loadIdx == nil {
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t.Fatalf("Load() returned nil index")
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}
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validateIndex(t, repo, loadIdx)
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newIdx, _, err := New(context.TODO(), repo, restic.NewIDSet(), nil)
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if err != nil {
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t.Fatalf("New() returned error %v", err)
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}
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if len(loadIdx.Packs) != len(newIdx.Packs) {
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t.Errorf("number of packs does not match: want %v, got %v",
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len(loadIdx.Packs), len(newIdx.Packs))
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}
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validateIndex(t, repo, newIdx)
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for packID, packNew := range newIdx.Packs {
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packLoad, ok := loadIdx.Packs[packID]
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if !ok {
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t.Errorf("loaded index does not list pack %v", packID.Str())
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continue
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}
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if len(packNew.Entries) != len(packLoad.Entries) {
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t.Errorf(" number of entries in pack %v does not match: %d != %d\n %v\n %v",
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packID.Str(), len(packNew.Entries), len(packLoad.Entries),
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packNew.Entries, packLoad.Entries)
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continue
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}
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for _, entryNew := range packNew.Entries {
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found := false
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for _, entryLoad := range packLoad.Entries {
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if !entryLoad.ID.Equal(entryNew.ID) {
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continue
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}
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if entryLoad.Type != entryNew.Type {
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continue
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}
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if entryLoad.Offset != entryNew.Offset {
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continue
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}
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if entryLoad.Length != entryNew.Length {
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continue
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}
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found = true
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break
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}
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if !found {
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t.Errorf("blob not found in loaded index: %v", entryNew)
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}
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}
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}
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}
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func BenchmarkIndexNew(b *testing.B) {
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repo, cleanup := createFilledRepo(b, 3, 0)
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defer cleanup()
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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idx, _, err := New(context.TODO(), repo, restic.NewIDSet(), nil)
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if err != nil {
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b.Fatalf("New() returned error %v", err)
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}
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if idx == nil {
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b.Fatalf("New() returned nil index")
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}
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b.Logf("idx %v packs", len(idx.Packs))
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}
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}
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func BenchmarkIndexSave(b *testing.B) {
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repo, cleanup := repository.TestRepository(b)
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defer cleanup()
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idx, _, err := New(context.TODO(), repo, restic.NewIDSet(), nil)
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test.OK(b, err)
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for i := 0; i < 8000; i++ {
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entries := make([]restic.Blob, 0, 200)
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for j := 0; j < cap(entries); j++ {
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entries = append(entries, restic.Blob{
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ID: restic.NewRandomID(),
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Length: 1000,
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Offset: 5,
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Type: restic.DataBlob,
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})
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}
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idx.AddPack(restic.NewRandomID(), 10000, entries)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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id, err := idx.Save(context.TODO(), repo, nil)
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if err != nil {
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b.Fatalf("New() returned error %v", err)
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}
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b.Logf("saved as %v", id.Str())
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}
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}
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func TestIndexDuplicateBlobs(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0.01)
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defer cleanup()
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idx, _, err := New(context.TODO(), repo, restic.NewIDSet(), nil)
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if err != nil {
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t.Fatal(err)
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}
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dups := idx.DuplicateBlobs()
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if len(dups) == 0 {
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t.Errorf("no duplicate blobs found")
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}
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t.Logf("%d packs, %d duplicate blobs", len(idx.Packs), len(dups))
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packs := idx.PacksForBlobs(dups)
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if len(packs) == 0 {
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t.Errorf("no packs with duplicate blobs found")
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}
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t.Logf("%d packs with duplicate blobs", len(packs))
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}
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func loadIndex(t testing.TB, repo restic.Repository) *Index {
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idx, err := Load(context.TODO(), repo, nil)
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if err != nil {
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t.Fatalf("Load() returned error %v", err)
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}
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return idx
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}
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func TestSave(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0)
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defer cleanup()
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idx := loadIndex(t, repo)
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packs := make(map[restic.ID][]restic.Blob)
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for id := range idx.Packs {
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if rand.Float32() < 0.5 {
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packs[id] = idx.Packs[id].Entries
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}
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}
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t.Logf("save %d/%d packs in a new index\n", len(packs), len(idx.Packs))
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id, err := Save(context.TODO(), repo, packs, idx.IndexIDs.List())
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if err != nil {
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t.Fatalf("unable to save new index: %v", err)
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}
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t.Logf("new index saved as %v", id.Str())
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for id := range idx.IndexIDs {
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t.Logf("remove index %v", id.Str())
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h := restic.Handle{Type: restic.IndexFile, Name: id.String()}
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err = repo.Backend().Remove(context.TODO(), h)
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if err != nil {
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t.Errorf("error removing index %v: %v", id, err)
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}
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}
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idx2 := loadIndex(t, repo)
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t.Logf("load new index with %d packs", len(idx2.Packs))
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if len(idx2.Packs) != len(packs) {
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t.Errorf("wrong number of packs in new index, want %d, got %d", len(packs), len(idx2.Packs))
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}
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for id := range packs {
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if _, ok := idx2.Packs[id]; !ok {
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t.Errorf("pack %v is not contained in new index", id.Str())
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}
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}
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for id := range idx2.Packs {
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if _, ok := packs[id]; !ok {
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t.Errorf("pack %v is not contained in new index", id.Str())
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}
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}
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}
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func TestIndexSave(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0)
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defer cleanup()
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idx := loadIndex(t, repo)
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id, err := idx.Save(context.TODO(), repo, idx.IndexIDs.List())
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if err != nil {
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t.Fatalf("unable to save new index: %v", err)
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}
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t.Logf("new index saved as %v", id.Str())
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for id := range idx.IndexIDs {
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t.Logf("remove index %v", id.Str())
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h := restic.Handle{Type: restic.IndexFile, Name: id.String()}
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err = repo.Backend().Remove(context.TODO(), h)
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if err != nil {
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t.Errorf("error removing index %v: %v", id, err)
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}
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}
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idx2 := loadIndex(t, repo)
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t.Logf("load new index with %d packs", len(idx2.Packs))
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checker := checker.New(repo)
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hints, errs := checker.LoadIndex(context.TODO())
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for _, h := range hints {
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t.Logf("hint: %v\n", h)
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}
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for _, err := range errs {
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t.Errorf("checker found error: %v", err)
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}
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}
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func TestIndexAddRemovePack(t *testing.T) {
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repo, cleanup := createFilledRepo(t, 3, 0)
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defer cleanup()
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idx, err := Load(context.TODO(), repo, nil)
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if err != nil {
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t.Fatalf("Load() returned error %v", err)
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}
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packID := <-repo.List(context.TODO(), restic.DataFile)
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t.Logf("selected pack %v", packID.Str())
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blobs := idx.Packs[packID].Entries
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idx.RemovePack(packID)
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if _, ok := idx.Packs[packID]; ok {
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t.Errorf("removed pack %v found in index.Packs", packID.Str())
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}
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for _, blob := range blobs {
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h := restic.BlobHandle{ID: blob.ID, Type: blob.Type}
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_, err := idx.FindBlob(h)
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if err == nil {
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t.Errorf("removed blob %v found in index", h)
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}
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}
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}
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// example index serialization from doc/Design.rst
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var docExample = []byte(`
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{
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"supersedes": [
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"ed54ae36197f4745ebc4b54d10e0f623eaaaedd03013eb7ae90df881b7781452"
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],
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"packs": [
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{
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"id": "73d04e6125cf3c28a299cc2f3cca3b78ceac396e4fcf9575e34536b26782413c",
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"blobs": [
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{
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"id": "3ec79977ef0cf5de7b08cd12b874cd0f62bbaf7f07f3497a5b1bbcc8cb39b1ce",
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"type": "data",
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"offset": 0,
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"length": 25
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},{
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"id": "9ccb846e60d90d4eb915848add7aa7ea1e4bbabfc60e573db9f7bfb2789afbae",
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"type": "tree",
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"offset": 38,
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"length": 100
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},
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{
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"id": "d3dc577b4ffd38cc4b32122cabf8655a0223ed22edfd93b353dc0c3f2b0fdf66",
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"type": "data",
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"offset": 150,
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"length": 123
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}
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]
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}
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]
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}
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`)
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func TestIndexLoadDocReference(t *testing.T) {
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repo, cleanup := repository.TestRepository(t)
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defer cleanup()
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id, err := repo.SaveUnpacked(context.TODO(), restic.IndexFile, docExample)
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if err != nil {
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t.Fatalf("SaveUnpacked() returned error %v", err)
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}
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t.Logf("index saved as %v", id.Str())
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idx := loadIndex(t, repo)
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blobID := restic.TestParseID("d3dc577b4ffd38cc4b32122cabf8655a0223ed22edfd93b353dc0c3f2b0fdf66")
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locs, err := idx.FindBlob(restic.BlobHandle{ID: blobID, Type: restic.DataBlob})
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if err != nil {
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t.Errorf("FindBlob() returned error %v", err)
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}
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if len(locs) != 1 {
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t.Errorf("blob found %d times, expected just one", len(locs))
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}
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l := locs[0]
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if !l.ID.Equal(blobID) {
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t.Errorf("blob IDs are not equal: %v != %v", l.ID, blobID)
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}
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if l.Type != restic.DataBlob {
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t.Errorf("want type %v, got %v", restic.DataBlob, l.Type)
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}
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if l.Offset != 150 {
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t.Errorf("wrong offset, want %d, got %v", 150, l.Offset)
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}
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if l.Length != 123 {
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t.Errorf("wrong length, want %d, got %v", 123, l.Length)
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}
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}
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