mirror of
https://github.com/octoleo/restic.git
synced 2024-05-31 16:10:49 +00:00
3500f9490c
UnusedBlobs now directly reads the list of existing blobs from the repository index. This removes the need for the blobStatusExists flag, which in turn allows converting the blobRefs map into a BlobSet.
621 lines
15 KiB
Go
621 lines
15 KiB
Go
package checker_test
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"sort"
|
|
"strconv"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/restic/restic/internal/archiver"
|
|
"github.com/restic/restic/internal/checker"
|
|
"github.com/restic/restic/internal/errors"
|
|
"github.com/restic/restic/internal/repository"
|
|
"github.com/restic/restic/internal/restic"
|
|
"github.com/restic/restic/internal/test"
|
|
)
|
|
|
|
var checkerTestData = filepath.Join("testdata", "checker-test-repo.tar.gz")
|
|
|
|
func collectErrors(ctx context.Context, f func(context.Context, chan<- error)) (errs []error) {
|
|
ctx, cancel := context.WithCancel(ctx)
|
|
defer cancel()
|
|
|
|
errChan := make(chan error)
|
|
|
|
go f(ctx, errChan)
|
|
|
|
for err := range errChan {
|
|
errs = append(errs, err)
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
func checkPacks(chkr *checker.Checker) []error {
|
|
return collectErrors(context.TODO(), chkr.Packs)
|
|
}
|
|
|
|
func checkStruct(chkr *checker.Checker) []error {
|
|
return collectErrors(context.TODO(), chkr.Structure)
|
|
}
|
|
|
|
func checkData(chkr *checker.Checker) []error {
|
|
return collectErrors(
|
|
context.TODO(),
|
|
func(ctx context.Context, errCh chan<- error) {
|
|
chkr.ReadData(ctx, errCh)
|
|
},
|
|
)
|
|
}
|
|
|
|
func TestCheckRepo(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
test.OKs(t, checkPacks(chkr))
|
|
test.OKs(t, checkStruct(chkr))
|
|
}
|
|
|
|
func TestMissingPack(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
packHandle := restic.Handle{
|
|
Type: restic.PackFile,
|
|
Name: "657f7fb64f6a854fff6fe9279998ee09034901eded4e6db9bcee0e59745bbce6",
|
|
}
|
|
test.OK(t, repo.Backend().Remove(context.TODO(), packHandle))
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
errs = checkPacks(chkr)
|
|
|
|
test.Assert(t, len(errs) == 1,
|
|
"expected exactly one error, got %v", len(errs))
|
|
|
|
if err, ok := errs[0].(checker.PackError); ok {
|
|
test.Equals(t, packHandle.Name, err.ID.String())
|
|
} else {
|
|
t.Errorf("expected error returned by checker.Packs() to be PackError, got %v", err)
|
|
}
|
|
}
|
|
|
|
func TestUnreferencedPack(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
// index 3f1a only references pack 60e0
|
|
packID := "60e0438dcb978ec6860cc1f8c43da648170ee9129af8f650f876bad19f8f788e"
|
|
indexHandle := restic.Handle{
|
|
Type: restic.IndexFile,
|
|
Name: "3f1abfcb79c6f7d0a3be517d2c83c8562fba64ef2c8e9a3544b4edaf8b5e3b44",
|
|
}
|
|
test.OK(t, repo.Backend().Remove(context.TODO(), indexHandle))
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
errs = checkPacks(chkr)
|
|
|
|
test.Assert(t, len(errs) == 1,
|
|
"expected exactly one error, got %v", len(errs))
|
|
|
|
if err, ok := errs[0].(checker.PackError); ok {
|
|
test.Equals(t, packID, err.ID.String())
|
|
} else {
|
|
t.Errorf("expected error returned by checker.Packs() to be PackError, got %v", err)
|
|
}
|
|
}
|
|
|
|
func TestUnreferencedBlobs(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
snapshotHandle := restic.Handle{
|
|
Type: restic.SnapshotFile,
|
|
Name: "51d249d28815200d59e4be7b3f21a157b864dc343353df9d8e498220c2499b02",
|
|
}
|
|
test.OK(t, repo.Backend().Remove(context.TODO(), snapshotHandle))
|
|
|
|
unusedBlobsBySnapshot := restic.BlobHandles{
|
|
restic.TestParseHandle("58c748bbe2929fdf30c73262bd8313fe828f8925b05d1d4a87fe109082acb849", restic.DataBlob),
|
|
restic.TestParseHandle("988a272ab9768182abfd1fe7d7a7b68967825f0b861d3b36156795832c772235", restic.DataBlob),
|
|
restic.TestParseHandle("c01952de4d91da1b1b80bc6e06eaa4ec21523f4853b69dc8231708b9b7ec62d8", restic.TreeBlob),
|
|
restic.TestParseHandle("bec3a53d7dc737f9a9bee68b107ec9e8ad722019f649b34d474b9982c3a3fec7", restic.TreeBlob),
|
|
restic.TestParseHandle("2a6f01e5e92d8343c4c6b78b51c5a4dc9c39d42c04e26088c7614b13d8d0559d", restic.TreeBlob),
|
|
restic.TestParseHandle("18b51b327df9391732ba7aaf841a4885f350d8a557b2da8352c9acf8898e3f10", restic.DataBlob),
|
|
}
|
|
|
|
sort.Sort(unusedBlobsBySnapshot)
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
test.OKs(t, checkPacks(chkr))
|
|
test.OKs(t, checkStruct(chkr))
|
|
|
|
blobs := chkr.UnusedBlobs(context.TODO())
|
|
sort.Sort(blobs)
|
|
|
|
test.Equals(t, unusedBlobsBySnapshot, blobs)
|
|
}
|
|
|
|
func TestModifiedIndex(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
done := make(chan struct{})
|
|
defer close(done)
|
|
|
|
h := restic.Handle{
|
|
Type: restic.IndexFile,
|
|
Name: "90f838b4ac28735fda8644fe6a08dbc742e57aaf81b30977b4fefa357010eafd",
|
|
}
|
|
|
|
tmpfile, err := ioutil.TempFile("", "restic-test-mod-index-")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer func() {
|
|
err := tmpfile.Close()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
err = os.Remove(tmpfile.Name())
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}()
|
|
|
|
// read the file from the backend
|
|
err = repo.Backend().Load(context.TODO(), h, 0, 0, func(rd io.Reader) error {
|
|
_, err := io.Copy(tmpfile, rd)
|
|
return err
|
|
})
|
|
test.OK(t, err)
|
|
|
|
// save the index again with a modified name so that the hash doesn't match
|
|
// the content any more
|
|
h2 := restic.Handle{
|
|
Type: restic.IndexFile,
|
|
Name: "80f838b4ac28735fda8644fe6a08dbc742e57aaf81b30977b4fefa357010eafd",
|
|
}
|
|
|
|
rd, err := restic.NewFileReader(tmpfile)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
err = repo.Backend().Save(context.TODO(), h2, rd)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) == 0 {
|
|
t.Fatalf("expected errors not found")
|
|
}
|
|
|
|
for _, err := range errs {
|
|
t.Logf("found expected error %v", err)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
}
|
|
|
|
var checkerDuplicateIndexTestData = filepath.Join("testdata", "duplicate-packs-in-index-test-repo.tar.gz")
|
|
|
|
func TestDuplicatePacksInIndex(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerDuplicateIndexTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(hints) == 0 {
|
|
t.Fatalf("did not get expected checker hints for duplicate packs in indexes")
|
|
}
|
|
|
|
found := false
|
|
for _, hint := range hints {
|
|
if _, ok := hint.(checker.ErrDuplicatePacks); ok {
|
|
found = true
|
|
} else {
|
|
t.Errorf("got unexpected hint: %v", hint)
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
t.Fatalf("did not find hint ErrDuplicatePacks")
|
|
}
|
|
|
|
if len(errs) > 0 {
|
|
t.Errorf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
}
|
|
|
|
// errorBackend randomly modifies data after reading.
|
|
type errorBackend struct {
|
|
restic.Backend
|
|
ProduceErrors bool
|
|
}
|
|
|
|
func (b errorBackend) Load(ctx context.Context, h restic.Handle, length int, offset int64, consumer func(rd io.Reader) error) error {
|
|
return b.Backend.Load(ctx, h, length, offset, func(rd io.Reader) error {
|
|
if b.ProduceErrors {
|
|
return consumer(errorReadCloser{rd})
|
|
}
|
|
return consumer(rd)
|
|
})
|
|
}
|
|
|
|
type errorReadCloser struct {
|
|
io.Reader
|
|
}
|
|
|
|
func (erd errorReadCloser) Read(p []byte) (int, error) {
|
|
n, err := erd.Reader.Read(p)
|
|
if n > 0 {
|
|
induceError(p[:n])
|
|
}
|
|
return n, err
|
|
}
|
|
|
|
// induceError flips a bit in the slice.
|
|
func induceError(data []byte) {
|
|
if rand.Float32() < 0.2 {
|
|
return
|
|
}
|
|
|
|
pos := rand.Intn(len(data))
|
|
data[pos] ^= 1
|
|
}
|
|
|
|
func TestCheckerModifiedData(t *testing.T) {
|
|
repo, cleanup := repository.TestRepository(t)
|
|
defer cleanup()
|
|
|
|
sn := archiver.TestSnapshot(t, repo, ".", nil)
|
|
t.Logf("archived as %v", sn.ID().Str())
|
|
|
|
beError := &errorBackend{Backend: repo.Backend()}
|
|
checkRepo := repository.New(beError)
|
|
test.OK(t, checkRepo.SearchKey(context.TODO(), test.TestPassword, 5, ""))
|
|
|
|
chkr := checker.New(checkRepo)
|
|
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
beError.ProduceErrors = true
|
|
errFound := false
|
|
for _, err := range checkPacks(chkr) {
|
|
t.Logf("pack error: %v", err)
|
|
}
|
|
|
|
for _, err := range checkStruct(chkr) {
|
|
t.Logf("struct error: %v", err)
|
|
}
|
|
|
|
for _, err := range checkData(chkr) {
|
|
t.Logf("data error: %v", err)
|
|
errFound = true
|
|
}
|
|
|
|
if !errFound {
|
|
t.Fatal("no error found, checker is broken")
|
|
}
|
|
}
|
|
|
|
// loadTreesOnceRepository allows each tree to be loaded only once
|
|
type loadTreesOnceRepository struct {
|
|
restic.Repository
|
|
loadedTrees restic.IDSet
|
|
mutex sync.Mutex
|
|
DuplicateTree bool
|
|
}
|
|
|
|
func (r *loadTreesOnceRepository) LoadTree(ctx context.Context, id restic.ID) (*restic.Tree, error) {
|
|
r.mutex.Lock()
|
|
defer r.mutex.Unlock()
|
|
|
|
if r.loadedTrees.Has(id) {
|
|
// additionally store error to ensure that it cannot be swallowed
|
|
r.DuplicateTree = true
|
|
return nil, errors.Errorf("trying to load tree with id %v twice", id)
|
|
}
|
|
r.loadedTrees.Insert(id)
|
|
return r.Repository.LoadTree(ctx, id)
|
|
}
|
|
|
|
func TestCheckerNoDuplicateTreeDecodes(t *testing.T) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
defer cleanup()
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
checkRepo := &loadTreesOnceRepository{
|
|
Repository: repo,
|
|
loadedTrees: restic.NewIDSet(),
|
|
}
|
|
|
|
chkr := checker.New(checkRepo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
test.OKs(t, checkPacks(chkr))
|
|
test.OKs(t, checkStruct(chkr))
|
|
test.Assert(t, !checkRepo.DuplicateTree, "detected duplicate tree loading")
|
|
}
|
|
|
|
// delayRepository delays read of a specific handle.
|
|
type delayRepository struct {
|
|
restic.Repository
|
|
DelayTree restic.ID
|
|
UnblockChannel chan struct{}
|
|
Unblocker sync.Once
|
|
}
|
|
|
|
func (r *delayRepository) LoadTree(ctx context.Context, id restic.ID) (*restic.Tree, error) {
|
|
if id == r.DelayTree {
|
|
<-r.UnblockChannel
|
|
}
|
|
return r.Repository.LoadTree(ctx, id)
|
|
}
|
|
|
|
func (r *delayRepository) LookupBlobSize(id restic.ID, t restic.BlobType) (uint, bool) {
|
|
if id == r.DelayTree && t == restic.DataBlob {
|
|
r.Unblock()
|
|
}
|
|
return r.Repository.LookupBlobSize(id, t)
|
|
}
|
|
|
|
func (r *delayRepository) Unblock() {
|
|
r.Unblocker.Do(func() {
|
|
close(r.UnblockChannel)
|
|
})
|
|
}
|
|
|
|
func TestCheckerBlobTypeConfusion(t *testing.T) {
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
|
defer cancel()
|
|
|
|
repo, cleanup := repository.TestRepository(t)
|
|
defer cleanup()
|
|
|
|
damagedNode := &restic.Node{
|
|
Name: "damaged",
|
|
Type: "file",
|
|
Mode: 0644,
|
|
Size: 42,
|
|
Content: restic.IDs{restic.TestParseID("0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")},
|
|
}
|
|
damagedTree := &restic.Tree{
|
|
Nodes: []*restic.Node{damagedNode},
|
|
}
|
|
|
|
id, err := repo.SaveTree(ctx, damagedTree)
|
|
test.OK(t, repo.Flush(ctx))
|
|
test.OK(t, err)
|
|
|
|
buf, err := repo.LoadBlob(ctx, restic.TreeBlob, id, nil)
|
|
test.OK(t, err)
|
|
|
|
_, _, err = repo.SaveBlob(ctx, restic.DataBlob, buf, id, false)
|
|
test.OK(t, err)
|
|
|
|
malNode := &restic.Node{
|
|
Name: "aaaaa",
|
|
Type: "file",
|
|
Mode: 0644,
|
|
Size: uint64(len(buf)),
|
|
Content: restic.IDs{id},
|
|
}
|
|
dirNode := &restic.Node{
|
|
Name: "bbbbb",
|
|
Type: "dir",
|
|
Mode: 0755,
|
|
Subtree: &id,
|
|
}
|
|
|
|
rootTree := &restic.Tree{
|
|
Nodes: []*restic.Node{malNode, dirNode},
|
|
}
|
|
|
|
rootId, err := repo.SaveTree(ctx, rootTree)
|
|
test.OK(t, err)
|
|
|
|
test.OK(t, repo.Flush(ctx))
|
|
test.OK(t, repo.SaveIndex(ctx))
|
|
|
|
snapshot, err := restic.NewSnapshot([]string{"/damaged"}, []string{"test"}, "foo", time.Now())
|
|
test.OK(t, err)
|
|
|
|
snapshot.Tree = &rootId
|
|
|
|
snapId, err := repo.SaveJSONUnpacked(ctx, restic.SnapshotFile, snapshot)
|
|
test.OK(t, err)
|
|
|
|
t.Logf("saved snapshot %v", snapId.Str())
|
|
|
|
delayRepo := &delayRepository{
|
|
Repository: repo,
|
|
DelayTree: id,
|
|
UnblockChannel: make(chan struct{}),
|
|
}
|
|
|
|
chkr := checker.New(delayRepo)
|
|
|
|
go func() {
|
|
<-ctx.Done()
|
|
delayRepo.Unblock()
|
|
}()
|
|
|
|
hints, errs := chkr.LoadIndex(ctx)
|
|
if len(errs) > 0 {
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
|
|
errFound := false
|
|
|
|
for _, err := range checkStruct(chkr) {
|
|
t.Logf("struct error: %v", err)
|
|
errFound = true
|
|
}
|
|
|
|
test.OK(t, ctx.Err())
|
|
|
|
if !errFound {
|
|
t.Fatal("no error found, checker is broken")
|
|
}
|
|
}
|
|
|
|
func loadBenchRepository(t *testing.B) (*checker.Checker, restic.Repository, func()) {
|
|
repodir, cleanup := test.Env(t, checkerTestData)
|
|
|
|
repo := repository.TestOpenLocal(t, repodir)
|
|
|
|
chkr := checker.New(repo)
|
|
hints, errs := chkr.LoadIndex(context.TODO())
|
|
if len(errs) > 0 {
|
|
defer cleanup()
|
|
t.Fatalf("expected no errors, got %v: %v", len(errs), errs)
|
|
}
|
|
|
|
if len(hints) > 0 {
|
|
t.Errorf("expected no hints, got %v: %v", len(hints), hints)
|
|
}
|
|
return chkr, repo, cleanup
|
|
}
|
|
|
|
func BenchmarkChecker(t *testing.B) {
|
|
chkr, _, cleanup := loadBenchRepository(t)
|
|
defer cleanup()
|
|
|
|
t.ResetTimer()
|
|
|
|
for i := 0; i < t.N; i++ {
|
|
test.OKs(t, checkPacks(chkr))
|
|
test.OKs(t, checkStruct(chkr))
|
|
test.OKs(t, checkData(chkr))
|
|
}
|
|
}
|
|
|
|
func benchmarkSnapshotScaling(t *testing.B, newSnapshots int) {
|
|
chkr, repo, cleanup := loadBenchRepository(t)
|
|
defer cleanup()
|
|
|
|
snID, err := restic.FindSnapshot(context.TODO(), repo, "51d249d2")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var sn2 restic.Snapshot
|
|
err = repo.LoadJSONUnpacked(context.TODO(), restic.SnapshotFile, snID, &sn2)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
treeID := sn2.Tree
|
|
|
|
for i := 0; i < newSnapshots; i++ {
|
|
sn, err := restic.NewSnapshot([]string{"test" + strconv.Itoa(i)}, nil, "", time.Now())
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
sn.Tree = treeID
|
|
|
|
_, err = repo.SaveJSONUnpacked(context.TODO(), restic.SnapshotFile, sn)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
t.ResetTimer()
|
|
|
|
for i := 0; i < t.N; i++ {
|
|
test.OKs(t, checkPacks(chkr))
|
|
test.OKs(t, checkStruct(chkr))
|
|
test.OKs(t, checkData(chkr))
|
|
}
|
|
}
|
|
|
|
func BenchmarkCheckerSnapshotScaling(b *testing.B) {
|
|
counts := []int{50, 100, 200}
|
|
for _, count := range counts {
|
|
count := count
|
|
b.Run(strconv.Itoa(count), func(b *testing.B) {
|
|
benchmarkSnapshotScaling(b, count)
|
|
})
|
|
}
|
|
}
|