mirror of
https://github.com/octoleo/restic.git
synced 2024-12-28 04:56:04 +00:00
618 lines
15 KiB
Go
618 lines
15 KiB
Go
package repository_test
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"crypto/sha256"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/google/go-cmp/cmp"
|
|
"github.com/klauspost/compress/zstd"
|
|
"github.com/restic/restic/internal/crypto"
|
|
"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, testSave)
|
|
}
|
|
|
|
func testSave(t *testing.T, version uint) {
|
|
repo, cleanup := repository.TestRepositoryWithVersion(t, version)
|
|
defer cleanup()
|
|
|
|
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
|
|
sid, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, data, restic.ID{}, false)
|
|
rtest.OK(t, err)
|
|
|
|
rtest.Equals(t, id, sid)
|
|
|
|
rtest.OK(t, repo.Flush(context.Background()))
|
|
// rtest.OK(t, repo.SaveIndex())
|
|
|
|
// 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 TestSaveFrom(t *testing.T) {
|
|
repository.TestAllVersions(t, testSaveFrom)
|
|
}
|
|
|
|
func testSaveFrom(t *testing.T, version uint) {
|
|
repo, cleanup := repository.TestRepositoryWithVersion(t, version)
|
|
defer cleanup()
|
|
|
|
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
|
|
id2, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, data, id, false)
|
|
rtest.OK(t, err)
|
|
rtest.Equals(t, id, id2)
|
|
|
|
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, cleanup := repository.TestRepositoryWithVersion(t, version)
|
|
defer cleanup()
|
|
|
|
size := 4 << 20 // 4MiB
|
|
|
|
data := make([]byte, size)
|
|
_, err := io.ReadFull(rnd, data)
|
|
rtest.OK(t, err)
|
|
|
|
id := restic.ID(sha256.Sum256(data))
|
|
|
|
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, cleanup := repository.TestRepositoryWithVersion(t, version)
|
|
defer cleanup()
|
|
|
|
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 BenchmarkLoadBlob(b *testing.B) {
|
|
repository.BenchmarkAllVersions(b, benchmarkLoadBlob)
|
|
}
|
|
|
|
func benchmarkLoadBlob(b *testing.B, version uint) {
|
|
repo, cleanup := repository.TestRepositoryWithVersion(b, version)
|
|
defer cleanup()
|
|
|
|
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, cleanup := repository.TestRepositoryWithVersion(b, version)
|
|
defer cleanup()
|
|
|
|
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, nil)
|
|
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) {
|
|
repodir, cleanup := rtest.Env(t, repoFixture)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
rtest.OK(t, repo.LoadIndex(context.TODO()))
|
|
}
|
|
|
|
// loadIndex loads the index id from backend and returns it.
|
|
func loadIndex(ctx context.Context, repo restic.Repository, id restic.ID) (*repository.Index, error) {
|
|
buf, err := repo.LoadUnpacked(ctx, restic.IndexFile, id, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
idx, oldFormat, err := repository.DecodeIndex(buf, id)
|
|
if oldFormat {
|
|
fmt.Fprintf(os.Stderr, "index %v has old format\n", id.Str())
|
|
}
|
|
return idx, err
|
|
}
|
|
|
|
func BenchmarkLoadIndex(b *testing.B) {
|
|
repository.BenchmarkAllVersions(b, benchmarkLoadIndex)
|
|
}
|
|
|
|
func benchmarkLoadIndex(b *testing.B, version uint) {
|
|
repository.TestUseLowSecurityKDFParameters(b)
|
|
|
|
repo, cleanup := repository.TestRepositoryWithVersion(b, version)
|
|
defer cleanup()
|
|
|
|
idx := repository.NewIndex()
|
|
|
|
for i := 0; i < 5000; i++ {
|
|
idx.StorePack(restic.NewRandomID(), []restic.Blob{
|
|
{
|
|
BlobHandle: restic.NewRandomBlobHandle(),
|
|
Length: 1234,
|
|
Offset: 1235,
|
|
},
|
|
})
|
|
}
|
|
|
|
id, err := repository.SaveIndex(context.TODO(), repo, idx)
|
|
rtest.OK(b, err)
|
|
|
|
b.Logf("index saved as %v", id.Str())
|
|
fi, err := repo.Backend().Stat(context.TODO(), restic.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) {
|
|
r, cleanup := repository.TestRepositoryWithVersion(t, version)
|
|
defer cleanup()
|
|
|
|
repo := r.(*repository.Repository)
|
|
|
|
repository.IndexFull = func(*repository.Index, bool) 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)
|
|
|
|
for pb := range idx.Each(context.TODO()) {
|
|
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))
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// buildPackfileWithoutHeader returns a manually built pack file without a header.
|
|
func buildPackfileWithoutHeader(t testing.TB, blobSizes []int, key *crypto.Key, compress bool) (blobs []restic.Blob, packfile []byte) {
|
|
opts := []zstd.EOption{
|
|
// Set the compression level configured.
|
|
zstd.WithEncoderLevel(zstd.SpeedDefault),
|
|
// Disable CRC, we have enough checks in place, makes the
|
|
// compressed data four bytes shorter.
|
|
zstd.WithEncoderCRC(false),
|
|
// Set a window of 512kbyte, so we have good lookbehind for usual
|
|
// blob sizes.
|
|
zstd.WithWindowSize(512 * 1024),
|
|
}
|
|
enc, err := zstd.NewWriter(nil, opts...)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
var offset uint
|
|
for i, size := range blobSizes {
|
|
plaintext := test.Random(800+i, size)
|
|
id := restic.Hash(plaintext)
|
|
uncompressedLength := uint(0)
|
|
if compress {
|
|
uncompressedLength = uint(len(plaintext))
|
|
plaintext = enc.EncodeAll(plaintext, nil)
|
|
}
|
|
|
|
// we use a deterministic nonce here so the whole process is
|
|
// deterministic, last byte is the blob index
|
|
var nonce = []byte{
|
|
0x15, 0x98, 0xc0, 0xf7, 0xb9, 0x65, 0x97, 0x74,
|
|
0x12, 0xdc, 0xd3, 0x62, 0xa9, 0x6e, 0x20, byte(i),
|
|
}
|
|
|
|
before := len(packfile)
|
|
packfile = append(packfile, nonce...)
|
|
packfile = key.Seal(packfile, nonce, plaintext, nil)
|
|
after := len(packfile)
|
|
|
|
ciphertextLength := after - before
|
|
|
|
blobs = append(blobs, restic.Blob{
|
|
BlobHandle: restic.BlobHandle{
|
|
Type: restic.DataBlob,
|
|
ID: id,
|
|
},
|
|
Length: uint(ciphertextLength),
|
|
UncompressedLength: uncompressedLength,
|
|
Offset: offset,
|
|
})
|
|
|
|
offset = uint(len(packfile))
|
|
}
|
|
|
|
return blobs, packfile
|
|
}
|
|
|
|
func TestStreamPack(t *testing.T) {
|
|
repository.TestAllVersions(t, testStreamPack)
|
|
}
|
|
|
|
func testStreamPack(t *testing.T, version uint) {
|
|
// always use the same key for deterministic output
|
|
const jsonKey = `{"mac":{"k":"eQenuI8adktfzZMuC8rwdA==","r":"k8cfAly2qQSky48CQK7SBA=="},"encrypt":"MKO9gZnRiQFl8mDUurSDa9NMjiu9MUifUrODTHS05wo="}`
|
|
|
|
var key crypto.Key
|
|
err := json.Unmarshal([]byte(jsonKey), &key)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
blobSizes := []int{
|
|
10,
|
|
5231,
|
|
18812,
|
|
123123,
|
|
12301,
|
|
892242,
|
|
28616,
|
|
13351,
|
|
252287,
|
|
188883,
|
|
2522811,
|
|
18883,
|
|
}
|
|
|
|
var compress bool
|
|
switch version {
|
|
case 1:
|
|
compress = false
|
|
case 2:
|
|
compress = true
|
|
default:
|
|
t.Fatal("test does not suport repository version", version)
|
|
}
|
|
|
|
packfileBlobs, packfile := buildPackfileWithoutHeader(t, blobSizes, &key, compress)
|
|
|
|
load := func(ctx context.Context, h restic.Handle, length int, offset int64, fn func(rd io.Reader) error) error {
|
|
data := packfile
|
|
|
|
if offset > int64(len(data)) {
|
|
offset = 0
|
|
length = 0
|
|
}
|
|
data = data[offset:]
|
|
|
|
if length > len(data) {
|
|
length = len(data)
|
|
}
|
|
|
|
data = data[:length]
|
|
|
|
return fn(bytes.NewReader(data))
|
|
|
|
}
|
|
|
|
// first, test regular usage
|
|
t.Run("regular", func(t *testing.T) {
|
|
tests := []struct {
|
|
blobs []restic.Blob
|
|
}{
|
|
{packfileBlobs[1:2]},
|
|
{packfileBlobs[2:5]},
|
|
{packfileBlobs[2:8]},
|
|
{[]restic.Blob{
|
|
packfileBlobs[0],
|
|
packfileBlobs[8],
|
|
packfileBlobs[4],
|
|
}},
|
|
{[]restic.Blob{
|
|
packfileBlobs[0],
|
|
packfileBlobs[len(packfileBlobs)-1],
|
|
}},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
t.Run("", func(t *testing.T) {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
gotBlobs := make(map[restic.ID]int)
|
|
|
|
handleBlob := func(blob restic.BlobHandle, buf []byte, err error) error {
|
|
gotBlobs[blob.ID]++
|
|
|
|
id := restic.Hash(buf)
|
|
if !id.Equal(blob.ID) {
|
|
t.Fatalf("wrong id %v for blob %s returned", id, blob.ID)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
wantBlobs := make(map[restic.ID]int)
|
|
for _, blob := range test.blobs {
|
|
wantBlobs[blob.ID] = 1
|
|
}
|
|
|
|
err = repository.StreamPack(ctx, load, &key, restic.ID{}, test.blobs, handleBlob)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if !cmp.Equal(wantBlobs, gotBlobs) {
|
|
t.Fatal(cmp.Diff(wantBlobs, gotBlobs))
|
|
}
|
|
})
|
|
}
|
|
})
|
|
|
|
// next, test invalid uses, which should return an error
|
|
t.Run("invalid", func(t *testing.T) {
|
|
tests := []struct {
|
|
blobs []restic.Blob
|
|
err string
|
|
}{
|
|
{
|
|
// pass one blob several times
|
|
blobs: []restic.Blob{
|
|
packfileBlobs[3],
|
|
packfileBlobs[8],
|
|
packfileBlobs[3],
|
|
packfileBlobs[4],
|
|
},
|
|
err: "overlapping blobs in pack",
|
|
},
|
|
|
|
{
|
|
// pass something that's not a valid blob in the current pack file
|
|
blobs: []restic.Blob{
|
|
{
|
|
Offset: 123,
|
|
Length: 20000,
|
|
},
|
|
},
|
|
err: "ciphertext verification failed",
|
|
},
|
|
|
|
{
|
|
// pass a blob that's too small
|
|
blobs: []restic.Blob{
|
|
{
|
|
Offset: 123,
|
|
Length: 10,
|
|
},
|
|
},
|
|
err: "invalid blob length",
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
t.Run("", func(t *testing.T) {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
handleBlob := func(blob restic.BlobHandle, buf []byte, err error) error {
|
|
return err
|
|
}
|
|
|
|
err = repository.StreamPack(ctx, load, &key, restic.ID{}, test.blobs, handleBlob)
|
|
if err == nil {
|
|
t.Fatalf("wanted error %v, got nil", test.err)
|
|
}
|
|
|
|
if !strings.Contains(err.Error(), test.err) {
|
|
t.Fatalf("wrong error returned, it should contain %q but was %q", test.err, err)
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|