mirror of
https://github.com/octoleo/restic.git
synced 2024-11-23 21:27:34 +00:00
460 lines
13 KiB
Go
460 lines
13 KiB
Go
package repository_test
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/sha256"
|
|
"fmt"
|
|
"io"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/restic/restic/internal/backend"
|
|
"github.com/restic/restic/internal/backend/cache"
|
|
"github.com/restic/restic/internal/backend/local"
|
|
"github.com/restic/restic/internal/backend/mem"
|
|
"github.com/restic/restic/internal/crypto"
|
|
"github.com/restic/restic/internal/errors"
|
|
"github.com/restic/restic/internal/index"
|
|
"github.com/restic/restic/internal/repository"
|
|
"github.com/restic/restic/internal/restic"
|
|
"github.com/restic/restic/internal/test"
|
|
rtest "github.com/restic/restic/internal/test"
|
|
"golang.org/x/sync/errgroup"
|
|
)
|
|
|
|
var testSizes = []int{5, 23, 2<<18 + 23, 1 << 20}
|
|
|
|
var rnd = rand.New(rand.NewSource(time.Now().UnixNano()))
|
|
|
|
func TestSave(t *testing.T) {
|
|
repository.TestAllVersions(t, testSavePassID)
|
|
repository.TestAllVersions(t, testSaveCalculateID)
|
|
}
|
|
|
|
func testSavePassID(t *testing.T, version uint) {
|
|
testSave(t, version, false)
|
|
}
|
|
|
|
func testSaveCalculateID(t *testing.T, version uint) {
|
|
testSave(t, version, true)
|
|
}
|
|
|
|
func testSave(t *testing.T, version uint, calculateID bool) {
|
|
repo, _ := repository.TestRepositoryWithVersion(t, version)
|
|
|
|
for _, size := range testSizes {
|
|
data := make([]byte, size)
|
|
_, err := io.ReadFull(rnd, data)
|
|
rtest.OK(t, err)
|
|
|
|
id := restic.Hash(data)
|
|
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
|
|
// save
|
|
inputID := restic.ID{}
|
|
if !calculateID {
|
|
inputID = id
|
|
}
|
|
sid, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, data, inputID, false)
|
|
rtest.OK(t, err)
|
|
rtest.Equals(t, id, sid)
|
|
|
|
rtest.OK(t, repo.Flush(context.Background()))
|
|
|
|
// read back
|
|
buf, err := repo.LoadBlob(context.TODO(), restic.DataBlob, id, nil)
|
|
rtest.OK(t, err)
|
|
rtest.Equals(t, size, len(buf))
|
|
|
|
rtest.Assert(t, len(buf) == len(data),
|
|
"number of bytes read back does not match: expected %d, got %d",
|
|
len(data), len(buf))
|
|
|
|
rtest.Assert(t, bytes.Equal(buf, data),
|
|
"data does not match: expected %02x, got %02x",
|
|
data, buf)
|
|
}
|
|
}
|
|
|
|
func BenchmarkSaveAndEncrypt(t *testing.B) {
|
|
repository.BenchmarkAllVersions(t, benchmarkSaveAndEncrypt)
|
|
}
|
|
|
|
func benchmarkSaveAndEncrypt(t *testing.B, version uint) {
|
|
repo, _ := repository.TestRepositoryWithVersion(t, version)
|
|
size := 4 << 20 // 4MiB
|
|
|
|
data := make([]byte, size)
|
|
_, err := io.ReadFull(rnd, data)
|
|
rtest.OK(t, err)
|
|
|
|
id := restic.ID(sha256.Sum256(data))
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.Background(), &wg)
|
|
|
|
t.ReportAllocs()
|
|
t.ResetTimer()
|
|
t.SetBytes(int64(size))
|
|
|
|
for i := 0; i < t.N; i++ {
|
|
_, _, _, err = repo.SaveBlob(context.TODO(), restic.DataBlob, data, id, true)
|
|
rtest.OK(t, err)
|
|
}
|
|
}
|
|
|
|
func TestLoadBlob(t *testing.T) {
|
|
repository.TestAllVersions(t, testLoadBlob)
|
|
}
|
|
|
|
func testLoadBlob(t *testing.T, version uint) {
|
|
repo, _ := repository.TestRepositoryWithVersion(t, version)
|
|
length := 1000000
|
|
buf := crypto.NewBlobBuffer(length)
|
|
_, err := io.ReadFull(rnd, buf)
|
|
rtest.OK(t, err)
|
|
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
|
|
id, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, buf, restic.ID{}, false)
|
|
rtest.OK(t, err)
|
|
rtest.OK(t, repo.Flush(context.Background()))
|
|
|
|
base := crypto.CiphertextLength(length)
|
|
for _, testlength := range []int{0, base - 20, base - 1, base, base + 7, base + 15, base + 1000} {
|
|
buf = make([]byte, 0, testlength)
|
|
buf, err := repo.LoadBlob(context.TODO(), restic.DataBlob, id, buf)
|
|
if err != nil {
|
|
t.Errorf("LoadBlob() returned an error for buffer size %v: %v", testlength, err)
|
|
continue
|
|
}
|
|
|
|
if len(buf) != length {
|
|
t.Errorf("LoadBlob() returned the wrong number of bytes: want %v, got %v", length, len(buf))
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestLoadBlobBroken(t *testing.T) {
|
|
be := mem.New()
|
|
repo, _ := repository.TestRepositoryWithBackend(t, &damageOnceBackend{Backend: be}, restic.StableRepoVersion, repository.Options{})
|
|
buf := test.Random(42, 1000)
|
|
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
id, _, _, err := repo.SaveBlob(context.TODO(), restic.TreeBlob, buf, restic.ID{}, false)
|
|
rtest.OK(t, err)
|
|
rtest.OK(t, repo.Flush(context.Background()))
|
|
|
|
// setup cache after saving the blob to make sure that the damageOnceBackend damages the cached data
|
|
c := cache.TestNewCache(t)
|
|
repo.UseCache(c)
|
|
|
|
data, err := repo.LoadBlob(context.TODO(), restic.TreeBlob, id, nil)
|
|
rtest.OK(t, err)
|
|
rtest.Assert(t, bytes.Equal(buf, data), "data mismatch")
|
|
pack := repo.LookupBlob(restic.TreeBlob, id)[0].PackID
|
|
rtest.Assert(t, c.Has(backend.Handle{Type: restic.PackFile, Name: pack.String()}), "expected tree pack to be cached")
|
|
}
|
|
|
|
func BenchmarkLoadBlob(b *testing.B) {
|
|
repository.BenchmarkAllVersions(b, benchmarkLoadBlob)
|
|
}
|
|
|
|
func benchmarkLoadBlob(b *testing.B, version uint) {
|
|
repo, _ := repository.TestRepositoryWithVersion(b, version)
|
|
length := 1000000
|
|
buf := crypto.NewBlobBuffer(length)
|
|
_, err := io.ReadFull(rnd, buf)
|
|
rtest.OK(b, err)
|
|
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
|
|
id, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, buf, restic.ID{}, false)
|
|
rtest.OK(b, err)
|
|
rtest.OK(b, repo.Flush(context.Background()))
|
|
|
|
b.ResetTimer()
|
|
b.SetBytes(int64(length))
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
var err error
|
|
buf, err = repo.LoadBlob(context.TODO(), restic.DataBlob, id, buf)
|
|
|
|
// Checking the SHA-256 with restic.Hash can make up 38% of the time
|
|
// spent in this loop, so pause the timer.
|
|
b.StopTimer()
|
|
rtest.OK(b, err)
|
|
if len(buf) != length {
|
|
b.Errorf("wanted %d bytes, got %d", length, len(buf))
|
|
}
|
|
|
|
id2 := restic.Hash(buf)
|
|
if !id.Equal(id2) {
|
|
b.Errorf("wrong data returned, wanted %v, got %v", id.Str(), id2.Str())
|
|
}
|
|
b.StartTimer()
|
|
}
|
|
}
|
|
|
|
func BenchmarkLoadUnpacked(b *testing.B) {
|
|
repository.BenchmarkAllVersions(b, benchmarkLoadUnpacked)
|
|
}
|
|
|
|
func benchmarkLoadUnpacked(b *testing.B, version uint) {
|
|
repo, _ := repository.TestRepositoryWithVersion(b, version)
|
|
length := 1000000
|
|
buf := crypto.NewBlobBuffer(length)
|
|
_, err := io.ReadFull(rnd, buf)
|
|
rtest.OK(b, err)
|
|
|
|
dataID := restic.Hash(buf)
|
|
|
|
storageID, err := repo.SaveUnpacked(context.TODO(), restic.PackFile, buf)
|
|
rtest.OK(b, err)
|
|
// rtest.OK(b, repo.Flush())
|
|
|
|
b.ResetTimer()
|
|
b.SetBytes(int64(length))
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
data, err := repo.LoadUnpacked(context.TODO(), restic.PackFile, storageID)
|
|
rtest.OK(b, err)
|
|
|
|
// See comment in BenchmarkLoadBlob.
|
|
b.StopTimer()
|
|
if len(data) != length {
|
|
b.Errorf("wanted %d bytes, got %d", length, len(data))
|
|
}
|
|
|
|
id2 := restic.Hash(data)
|
|
if !dataID.Equal(id2) {
|
|
b.Errorf("wrong data returned, wanted %v, got %v", storageID.Str(), id2.Str())
|
|
}
|
|
b.StartTimer()
|
|
}
|
|
}
|
|
|
|
var repoFixture = filepath.Join("testdata", "test-repo.tar.gz")
|
|
|
|
func TestRepositoryLoadIndex(t *testing.T) {
|
|
repo, _, cleanup := repository.TestFromFixture(t, repoFixture)
|
|
defer cleanup()
|
|
|
|
rtest.OK(t, repo.LoadIndex(context.TODO(), nil))
|
|
}
|
|
|
|
// loadIndex loads the index id from backend and returns it.
|
|
func loadIndex(ctx context.Context, repo restic.LoaderUnpacked, id restic.ID) (*index.Index, error) {
|
|
buf, err := repo.LoadUnpacked(ctx, restic.IndexFile, id)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
idx, oldFormat, err := index.DecodeIndex(buf, id)
|
|
if oldFormat {
|
|
fmt.Fprintf(os.Stderr, "index %v has old format\n", id.Str())
|
|
}
|
|
return idx, err
|
|
}
|
|
|
|
func TestRepositoryLoadUnpackedBroken(t *testing.T) {
|
|
repo, be := repository.TestRepositoryWithVersion(t, 0)
|
|
|
|
data := rtest.Random(23, 12345)
|
|
id := restic.Hash(data)
|
|
h := backend.Handle{Type: restic.IndexFile, Name: id.String()}
|
|
// damage buffer
|
|
data[0] ^= 0xff
|
|
|
|
// store broken file
|
|
err := be.Save(context.TODO(), h, backend.NewByteReader(data, be.Hasher()))
|
|
rtest.OK(t, err)
|
|
|
|
_, err = repo.LoadUnpacked(context.TODO(), restic.IndexFile, id)
|
|
rtest.Assert(t, errors.Is(err, restic.ErrInvalidData), "unexpected error: %v", err)
|
|
}
|
|
|
|
type damageOnceBackend struct {
|
|
backend.Backend
|
|
m sync.Map
|
|
}
|
|
|
|
func (be *damageOnceBackend) Load(ctx context.Context, h backend.Handle, length int, offset int64, fn func(rd io.Reader) error) error {
|
|
// don't break the config file as we can't retry it
|
|
if h.Type == restic.ConfigFile {
|
|
return be.Backend.Load(ctx, h, length, offset, fn)
|
|
}
|
|
|
|
h.IsMetadata = false
|
|
_, isRetry := be.m.LoadOrStore(h, true)
|
|
if !isRetry {
|
|
// return broken data on the first try
|
|
offset++
|
|
}
|
|
return be.Backend.Load(ctx, h, length, offset, fn)
|
|
}
|
|
|
|
func TestRepositoryLoadUnpackedRetryBroken(t *testing.T) {
|
|
repodir, cleanup := rtest.Env(t, repoFixture)
|
|
defer cleanup()
|
|
|
|
be, err := local.Open(context.TODO(), local.Config{Path: repodir, Connections: 2})
|
|
rtest.OK(t, err)
|
|
repo := repository.TestOpenBackend(t, &damageOnceBackend{Backend: be})
|
|
|
|
rtest.OK(t, repo.LoadIndex(context.TODO(), nil))
|
|
}
|
|
|
|
func BenchmarkLoadIndex(b *testing.B) {
|
|
repository.BenchmarkAllVersions(b, benchmarkLoadIndex)
|
|
}
|
|
|
|
func benchmarkLoadIndex(b *testing.B, version uint) {
|
|
repository.TestUseLowSecurityKDFParameters(b)
|
|
|
|
repo, be := repository.TestRepositoryWithVersion(b, version)
|
|
idx := index.NewIndex()
|
|
|
|
for i := 0; i < 5000; i++ {
|
|
idx.StorePack(restic.NewRandomID(), []restic.Blob{
|
|
{
|
|
BlobHandle: restic.NewRandomBlobHandle(),
|
|
Length: 1234,
|
|
Offset: 1235,
|
|
},
|
|
})
|
|
}
|
|
idx.Finalize()
|
|
|
|
id, err := idx.SaveIndex(context.TODO(), repo)
|
|
rtest.OK(b, err)
|
|
|
|
b.Logf("index saved as %v", id.Str())
|
|
fi, err := be.Stat(context.TODO(), backend.Handle{Type: restic.IndexFile, Name: id.String()})
|
|
rtest.OK(b, err)
|
|
b.Logf("filesize is %v", fi.Size)
|
|
|
|
b.ResetTimer()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
_, err := loadIndex(context.TODO(), repo, id)
|
|
rtest.OK(b, err)
|
|
}
|
|
}
|
|
|
|
// saveRandomDataBlobs generates random data blobs and saves them to the repository.
|
|
func saveRandomDataBlobs(t testing.TB, repo restic.Repository, num int, sizeMax int) {
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
|
|
for i := 0; i < num; i++ {
|
|
size := rand.Int() % sizeMax
|
|
|
|
buf := make([]byte, size)
|
|
_, err := io.ReadFull(rnd, buf)
|
|
rtest.OK(t, err)
|
|
|
|
_, _, _, err = repo.SaveBlob(context.TODO(), restic.DataBlob, buf, restic.ID{}, false)
|
|
rtest.OK(t, err)
|
|
}
|
|
}
|
|
|
|
func TestRepositoryIncrementalIndex(t *testing.T) {
|
|
repository.TestAllVersions(t, testRepositoryIncrementalIndex)
|
|
}
|
|
|
|
func testRepositoryIncrementalIndex(t *testing.T, version uint) {
|
|
repo, _ := repository.TestRepositoryWithVersion(t, version)
|
|
|
|
index.IndexFull = func(*index.Index) bool { return true }
|
|
|
|
// add a few rounds of packs
|
|
for j := 0; j < 5; j++ {
|
|
// add some packs, write intermediate index
|
|
saveRandomDataBlobs(t, repo, 20, 1<<15)
|
|
rtest.OK(t, repo.Flush(context.TODO()))
|
|
}
|
|
|
|
// save final index
|
|
rtest.OK(t, repo.Flush(context.TODO()))
|
|
|
|
packEntries := make(map[restic.ID]map[restic.ID]struct{})
|
|
|
|
err := repo.List(context.TODO(), restic.IndexFile, func(id restic.ID, size int64) error {
|
|
idx, err := loadIndex(context.TODO(), repo, id)
|
|
rtest.OK(t, err)
|
|
|
|
rtest.OK(t, idx.Each(context.TODO(), func(pb restic.PackedBlob) {
|
|
if _, ok := packEntries[pb.PackID]; !ok {
|
|
packEntries[pb.PackID] = make(map[restic.ID]struct{})
|
|
}
|
|
|
|
packEntries[pb.PackID][id] = struct{}{}
|
|
}))
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
for packID, ids := range packEntries {
|
|
if len(ids) > 1 {
|
|
t.Errorf("pack %v listed in %d indexes\n", packID, len(ids))
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
func TestInvalidCompression(t *testing.T) {
|
|
var comp repository.CompressionMode
|
|
err := comp.Set("nope")
|
|
rtest.Assert(t, err != nil, "missing error")
|
|
_, err = repository.New(nil, repository.Options{Compression: comp})
|
|
rtest.Assert(t, err != nil, "missing error")
|
|
}
|
|
|
|
func TestListPack(t *testing.T) {
|
|
be := mem.New()
|
|
repo, _ := repository.TestRepositoryWithBackend(t, &damageOnceBackend{Backend: be}, restic.StableRepoVersion, repository.Options{})
|
|
buf := test.Random(42, 1000)
|
|
|
|
var wg errgroup.Group
|
|
repo.StartPackUploader(context.TODO(), &wg)
|
|
id, _, _, err := repo.SaveBlob(context.TODO(), restic.TreeBlob, buf, restic.ID{}, false)
|
|
rtest.OK(t, err)
|
|
rtest.OK(t, repo.Flush(context.Background()))
|
|
|
|
// setup cache after saving the blob to make sure that the damageOnceBackend damages the cached data
|
|
c := cache.TestNewCache(t)
|
|
repo.UseCache(c)
|
|
|
|
// Forcibly cache pack file
|
|
packID := repo.LookupBlob(restic.TreeBlob, id)[0].PackID
|
|
rtest.OK(t, be.Load(context.TODO(), backend.Handle{Type: restic.PackFile, IsMetadata: true, Name: packID.String()}, 0, 0, func(rd io.Reader) error { return nil }))
|
|
|
|
// Get size to list pack
|
|
var size int64
|
|
rtest.OK(t, repo.List(context.TODO(), restic.PackFile, func(id restic.ID, sz int64) error {
|
|
if id == packID {
|
|
size = sz
|
|
}
|
|
return nil
|
|
}))
|
|
|
|
blobs, _, err := repo.ListPack(context.TODO(), packID, size)
|
|
rtest.OK(t, err)
|
|
rtest.Assert(t, len(blobs) == 1 && blobs[0].ID == id, "unexpected blobs in pack: %v", blobs)
|
|
|
|
rtest.Assert(t, !c.Has(backend.Handle{Type: restic.PackFile, Name: packID.String()}), "tree pack should no longer be cached as ListPack does not set IsMetadata in the backend.Handle")
|
|
}
|