package index_test import ( "context" "fmt" "math/rand" "runtime" "testing" "time" "github.com/restic/restic/internal/checker" "github.com/restic/restic/internal/crypto" "github.com/restic/restic/internal/index" "github.com/restic/restic/internal/repository" "github.com/restic/restic/internal/restic" rtest "github.com/restic/restic/internal/test" ) func TestMasterIndex(t *testing.T) { bhInIdx1 := restic.NewRandomBlobHandle() bhInIdx2 := restic.NewRandomBlobHandle() bhInIdx12 := restic.BlobHandle{ID: restic.NewRandomID(), Type: restic.TreeBlob} blob1 := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx1, Length: uint(crypto.CiphertextLength(10)), Offset: 0, }, } blob2 := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx2, Length: uint(crypto.CiphertextLength(100)), Offset: 10, UncompressedLength: 200, }, } blob12a := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx12, Length: uint(crypto.CiphertextLength(123)), Offset: 110, UncompressedLength: 80, }, } blob12b := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx12, Length: uint(crypto.CiphertextLength(123)), Offset: 50, UncompressedLength: 80, }, } idx1 := index.NewIndex() idx1.StorePack(blob1.PackID, []restic.Blob{blob1.Blob}) idx1.StorePack(blob12a.PackID, []restic.Blob{blob12a.Blob}) idx2 := index.NewIndex() idx2.StorePack(blob2.PackID, []restic.Blob{blob2.Blob}) idx2.StorePack(blob12b.PackID, []restic.Blob{blob12b.Blob}) mIdx := index.NewMasterIndex() mIdx.Insert(idx1) mIdx.Insert(idx2) // test idInIdx1 found := mIdx.Has(bhInIdx1) rtest.Equals(t, true, found) blobs := mIdx.Lookup(bhInIdx1) rtest.Equals(t, []restic.PackedBlob{blob1}, blobs) size, found := mIdx.LookupSize(bhInIdx1) rtest.Equals(t, true, found) rtest.Equals(t, uint(10), size) // test idInIdx2 found = mIdx.Has(bhInIdx2) rtest.Equals(t, true, found) blobs = mIdx.Lookup(bhInIdx2) rtest.Equals(t, []restic.PackedBlob{blob2}, blobs) size, found = mIdx.LookupSize(bhInIdx2) rtest.Equals(t, true, found) rtest.Equals(t, uint(200), size) // test idInIdx12 found = mIdx.Has(bhInIdx12) rtest.Equals(t, true, found) blobs = mIdx.Lookup(bhInIdx12) rtest.Equals(t, 2, len(blobs)) // test Lookup result for blob12a found = false if blobs[0] == blob12a || blobs[1] == blob12a { found = true } rtest.Assert(t, found, "blob12a not found in result") // test Lookup result for blob12b found = false if blobs[0] == blob12b || blobs[1] == blob12b { found = true } rtest.Assert(t, found, "blob12a not found in result") size, found = mIdx.LookupSize(bhInIdx12) rtest.Equals(t, true, found) rtest.Equals(t, uint(80), size) // test not in index found = mIdx.Has(restic.BlobHandle{ID: restic.NewRandomID(), Type: restic.TreeBlob}) rtest.Assert(t, !found, "Expected no blobs when fetching with a random id") blobs = mIdx.Lookup(restic.NewRandomBlobHandle()) rtest.Assert(t, blobs == nil, "Expected no blobs when fetching with a random id") _, found = mIdx.LookupSize(restic.NewRandomBlobHandle()) rtest.Assert(t, !found, "Expected no blobs when fetching with a random id") } func TestMasterMergeFinalIndexes(t *testing.T) { bhInIdx1 := restic.NewRandomBlobHandle() bhInIdx2 := restic.NewRandomBlobHandle() blob1 := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx1, Length: 10, Offset: 0, }, } blob2 := restic.PackedBlob{ PackID: restic.NewRandomID(), Blob: restic.Blob{ BlobHandle: bhInIdx2, Length: 100, Offset: 10, UncompressedLength: 200, }, } idx1 := index.NewIndex() idx1.StorePack(blob1.PackID, []restic.Blob{blob1.Blob}) idx2 := index.NewIndex() idx2.StorePack(blob2.PackID, []restic.Blob{blob2.Blob}) mIdx := index.NewMasterIndex() mIdx.Insert(idx1) mIdx.Insert(idx2) finalIndexes, idxCount := index.TestMergeIndex(t, mIdx) rtest.Equals(t, []*index.Index{idx1, idx2}, finalIndexes) rtest.Equals(t, 1, idxCount) blobCount := 0 rtest.OK(t, mIdx.Each(context.TODO(), func(pb restic.PackedBlob) { blobCount++ })) rtest.Equals(t, 2, blobCount) blobs := mIdx.Lookup(bhInIdx1) rtest.Equals(t, []restic.PackedBlob{blob1}, blobs) blobs = mIdx.Lookup(bhInIdx2) rtest.Equals(t, []restic.PackedBlob{blob2}, blobs) blobs = mIdx.Lookup(restic.NewRandomBlobHandle()) rtest.Assert(t, blobs == nil, "Expected no blobs when fetching with a random id") // merge another index containing identical blobs idx3 := index.NewIndex() idx3.StorePack(blob1.PackID, []restic.Blob{blob1.Blob}) idx3.StorePack(blob2.PackID, []restic.Blob{blob2.Blob}) mIdx.Insert(idx3) finalIndexes, idxCount = index.TestMergeIndex(t, mIdx) rtest.Equals(t, []*index.Index{idx3}, finalIndexes) rtest.Equals(t, 1, idxCount) // Index should have same entries as before! blobs = mIdx.Lookup(bhInIdx1) rtest.Equals(t, []restic.PackedBlob{blob1}, blobs) blobs = mIdx.Lookup(bhInIdx2) rtest.Equals(t, []restic.PackedBlob{blob2}, blobs) blobCount = 0 rtest.OK(t, mIdx.Each(context.TODO(), func(pb restic.PackedBlob) { blobCount++ })) rtest.Equals(t, 2, blobCount) } func createRandomMasterIndex(t testing.TB, rng *rand.Rand, num, size int) (*index.MasterIndex, restic.BlobHandle) { mIdx := index.NewMasterIndex() for i := 0; i < num-1; i++ { idx, _ := createRandomIndex(rng, size) mIdx.Insert(idx) } idx1, lookupBh := createRandomIndex(rng, size) mIdx.Insert(idx1) index.TestMergeIndex(t, mIdx) return mIdx, lookupBh } func BenchmarkMasterIndexAlloc(b *testing.B) { rng := rand.New(rand.NewSource(0)) b.ReportAllocs() for i := 0; i < b.N; i++ { createRandomMasterIndex(b, rng, 10000, 5) } } func BenchmarkMasterIndexLookupSingleIndex(b *testing.B) { mIdx, lookupBh := createRandomMasterIndex(b, rand.New(rand.NewSource(0)), 1, 200000) b.ResetTimer() for i := 0; i < b.N; i++ { mIdx.Lookup(lookupBh) } } func BenchmarkMasterIndexLookupMultipleIndex(b *testing.B) { mIdx, lookupBh := createRandomMasterIndex(b, rand.New(rand.NewSource(0)), 100, 10000) b.ResetTimer() for i := 0; i < b.N; i++ { mIdx.Lookup(lookupBh) } } func BenchmarkMasterIndexLookupSingleIndexUnknown(b *testing.B) { lookupBh := restic.NewRandomBlobHandle() mIdx, _ := createRandomMasterIndex(b, rand.New(rand.NewSource(0)), 1, 200000) b.ResetTimer() for i := 0; i < b.N; i++ { mIdx.Lookup(lookupBh) } } func BenchmarkMasterIndexLookupMultipleIndexUnknown(b *testing.B) { lookupBh := restic.NewRandomBlobHandle() mIdx, _ := createRandomMasterIndex(b, rand.New(rand.NewSource(0)), 100, 10000) b.ResetTimer() for i := 0; i < b.N; i++ { mIdx.Lookup(lookupBh) } } func BenchmarkMasterIndexLookupParallel(b *testing.B) { for _, numindices := range []int{25, 50, 100} { var lookupBh restic.BlobHandle b.StopTimer() rng := rand.New(rand.NewSource(0)) mIdx, lookupBh := createRandomMasterIndex(b, rng, numindices, 10000) b.StartTimer() name := fmt.Sprintf("known,indices=%d", numindices) b.Run(name, func(b *testing.B) { b.RunParallel(func(pb *testing.PB) { for pb.Next() { mIdx.Lookup(lookupBh) } }) }) lookupBh = restic.NewRandomBlobHandle() name = fmt.Sprintf("unknown,indices=%d", numindices) b.Run(name, func(b *testing.B) { b.RunParallel(func(pb *testing.PB) { for pb.Next() { mIdx.Lookup(lookupBh) } }) }) } } func BenchmarkMasterIndexLookupBlobSize(b *testing.B) { rng := rand.New(rand.NewSource(0)) mIdx, lookupBh := createRandomMasterIndex(b, rand.New(rng), 5, 200000) b.ResetTimer() for i := 0; i < b.N; i++ { mIdx.LookupSize(lookupBh) } } func BenchmarkMasterIndexEach(b *testing.B) { rng := rand.New(rand.NewSource(0)) mIdx, _ := createRandomMasterIndex(b, rand.New(rng), 5, 200000) b.ResetTimer() for i := 0; i < b.N; i++ { entries := 0 rtest.OK(b, mIdx.Each(context.TODO(), func(pb restic.PackedBlob) { entries++ })) } } func BenchmarkMasterIndexGC(b *testing.B) { mIdx, _ := createRandomMasterIndex(b, rand.New(rand.NewSource(0)), 100, 10000) b.ResetTimer() for i := 0; i < b.N; i++ { runtime.GC() } runtime.KeepAlive(mIdx) } var ( snapshotTime = time.Unix(1470492820, 207401672) depth = 3 ) func createFilledRepo(t testing.TB, snapshots int, version uint) restic.Repository { repo, _ := repository.TestRepositoryWithVersion(t, version) for i := 0; i < snapshots; i++ { restic.TestCreateSnapshot(t, repo, snapshotTime.Add(time.Duration(i)*time.Second), depth) } return repo } func TestIndexSave(t *testing.T) { repository.TestAllVersions(t, testIndexSave) } func testIndexSave(t *testing.T, version uint) { repo := createFilledRepo(t, 3, version) idx := index.NewMasterIndex() rtest.OK(t, idx.Load(context.TODO(), repo, nil, nil)) blobs := make(map[restic.PackedBlob]struct{}) rtest.OK(t, idx.Each(context.TODO(), func(pb restic.PackedBlob) { blobs[pb] = struct{}{} })) rtest.OK(t, idx.Save(context.TODO(), repo, nil, nil, index.MasterIndexSaveOpts{})) idx = index.NewMasterIndex() rtest.OK(t, idx.Load(context.TODO(), repo, nil, nil)) rtest.OK(t, idx.Each(context.TODO(), func(pb restic.PackedBlob) { if _, ok := blobs[pb]; ok { delete(blobs, pb) } else { t.Fatalf("unexpected blobs %v", pb) } })) rtest.Equals(t, 0, len(blobs), "saved index is missing blobs") checker.TestCheckRepo(t, repo, false) }