package storage import ( "context" "fmt" "io" "math/rand" "testing" "github.com/docker/distribution" "github.com/docker/distribution/reference" "github.com/docker/distribution/registry/storage/cache/memory" "github.com/docker/distribution/registry/storage/driver" "github.com/docker/distribution/registry/storage/driver/inmemory" "github.com/docker/distribution/testutil" "github.com/opencontainers/go-digest" ) type setupEnv struct { ctx context.Context driver driver.StorageDriver expected []string registry distribution.Namespace } func setupFS(t *testing.T) *setupEnv { d := inmemory.New() ctx := context.Background() registry, err := NewRegistry(ctx, d, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect) if err != nil { t.Fatalf("error creating registry: %v", err) } repos := []string{ "foo/a", "foo/b", "foo-bar/a", "bar/c", "bar/d", "bar/e", "foo/d/in", "foo-bar/b", "test", } for _, repo := range repos { makeRepo(ctx, t, repo, registry) } expected := []string{ "bar/c", "bar/d", "bar/e", "foo/a", "foo/b", "foo/d/in", "foo-bar/a", "foo-bar/b", "test", } return &setupEnv{ ctx: ctx, driver: d, expected: expected, registry: registry, } } func makeRepo(ctx context.Context, t *testing.T, name string, reg distribution.Namespace) { named, err := reference.WithName(name) if err != nil { t.Fatal(err) } repo, _ := reg.Repository(ctx, named) manifests, _ := repo.Manifests(ctx) layers, err := testutil.CreateRandomLayers(1) if err != nil { t.Fatal(err) } err = testutil.UploadBlobs(repo, layers) if err != nil { t.Fatalf("failed to upload layers: %v", err) } getKeys := func(digests map[digest.Digest]io.ReadSeeker) (ds []digest.Digest) { for d := range digests { ds = append(ds, d) } return } manifest, err := testutil.MakeSchema1Manifest(getKeys(layers)) if err != nil { t.Fatal(err) } _, err = manifests.Put(ctx, manifest) if err != nil { t.Fatalf("manifest upload failed: %v", err) } } func TestCatalog(t *testing.T) { env := setupFS(t) p := make([]string, 50) numFilled, err := env.registry.Repositories(env.ctx, p, "") if numFilled != len(env.expected) { t.Errorf("missing items in catalog") } if !testEq(p, env.expected, len(env.expected)) { t.Errorf("Expected catalog repos err") } if err != io.EOF { t.Errorf("Catalog has more values which we aren't expecting") } } func TestCatalogInParts(t *testing.T) { env := setupFS(t) chunkLen := 3 p := make([]string, chunkLen) numFilled, err := env.registry.Repositories(env.ctx, p, "") if err == io.EOF || numFilled != len(p) { t.Errorf("Expected more values in catalog") } if !testEq(p, env.expected[0:chunkLen], numFilled) { t.Errorf("Expected catalog first chunk err") } lastRepo := p[len(p)-1] numFilled, err = env.registry.Repositories(env.ctx, p, lastRepo) if err == io.EOF || numFilled != len(p) { t.Errorf("Expected more values in catalog") } if !testEq(p, env.expected[chunkLen:chunkLen*2], numFilled) { t.Errorf("Expected catalog second chunk err") } lastRepo = p[len(p)-1] numFilled, err = env.registry.Repositories(env.ctx, p, lastRepo) if err != io.EOF || numFilled != len(p) { t.Errorf("Expected end of catalog") } if !testEq(p, env.expected[chunkLen*2:chunkLen*3], numFilled) { t.Errorf("Expected catalog third chunk err") } lastRepo = p[len(p)-1] numFilled, err = env.registry.Repositories(env.ctx, p, lastRepo) if err != io.EOF { t.Errorf("Catalog has more values which we aren't expecting") } if numFilled != 0 { t.Errorf("Expected catalog fourth chunk err") } } func TestCatalogEnumerate(t *testing.T) { env := setupFS(t) var repos []string repositoryEnumerator := env.registry.(distribution.RepositoryEnumerator) err := repositoryEnumerator.Enumerate(env.ctx, func(repoName string) error { repos = append(repos, repoName) return nil }) if err != nil { t.Errorf("Expected catalog enumerate err") } if len(repos) != len(env.expected) { t.Errorf("Expected catalog enumerate doesn't have correct number of values") } if !testEq(repos, env.expected, len(env.expected)) { t.Errorf("Expected catalog enumerate not over all values") } } func testEq(a, b []string, size int) bool { for cnt := 0; cnt < size-1; cnt++ { if a[cnt] != b[cnt] { return false } } return true } func setupBadWalkEnv(t *testing.T) *setupEnv { d := newBadListDriver() ctx := context.Background() registry, err := NewRegistry(ctx, d, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect) if err != nil { t.Fatalf("error creating registry: %v", err) } return &setupEnv{ ctx: ctx, driver: d, registry: registry, } } type badListDriver struct { driver.StorageDriver } var _ driver.StorageDriver = &badListDriver{} func newBadListDriver() *badListDriver { return &badListDriver{StorageDriver: inmemory.New()} } func (d *badListDriver) List(ctx context.Context, path string) ([]string, error) { return nil, fmt.Errorf("List error") } func TestCatalogWalkError(t *testing.T) { env := setupBadWalkEnv(t) p := make([]string, 1) _, err := env.registry.Repositories(env.ctx, p, "") if err == io.EOF { t.Errorf("Expected catalog driver list error") } } func BenchmarkPathCompareEqual(B *testing.B) { B.StopTimer() pp := randomPath(100) // make a real copy ppb := append([]byte{}, []byte(pp)...) a, b := pp, string(ppb) B.StartTimer() for i := 0; i < B.N; i++ { lessPath(a, b) } } func BenchmarkPathCompareNotEqual(B *testing.B) { B.StopTimer() a, b := randomPath(100), randomPath(100) B.StartTimer() for i := 0; i < B.N; i++ { lessPath(a, b) } } func BenchmarkPathCompareNative(B *testing.B) { B.StopTimer() a, b := randomPath(100), randomPath(100) B.StartTimer() for i := 0; i < B.N; i++ { c := a < b _ = c && false } } func BenchmarkPathCompareNativeEqual(B *testing.B) { B.StopTimer() pp := randomPath(100) a, b := pp, pp B.StartTimer() for i := 0; i < B.N; i++ { c := a < b _ = c && false } } var filenameChars = []byte("abcdefghijklmnopqrstuvwxyz0123456789") var separatorChars = []byte("._-") func randomPath(length int64) string { path := "/" for int64(len(path)) < length { chunkLength := rand.Int63n(length-int64(len(path))) + 1 chunk := randomFilename(chunkLength) path += chunk remaining := length - int64(len(path)) if remaining == 1 { path += randomFilename(1) } else if remaining > 1 { path += "/" } } return path } func randomFilename(length int64) string { b := make([]byte, length) wasSeparator := true for i := range b { if !wasSeparator && i < len(b)-1 && rand.Intn(4) == 0 { b[i] = separatorChars[rand.Intn(len(separatorChars))] wasSeparator = true } else { b[i] = filenameChars[rand.Intn(len(filenameChars))] wasSeparator = false } } return string(b) }