| package image // import "github.com/docker/docker/image" |
| |
| import ( |
| "fmt" |
| "runtime" |
| "testing" |
| |
| "github.com/docker/docker/layer" |
| "gotest.tools/v3/assert" |
| "gotest.tools/v3/assert/cmp" |
| ) |
| |
| func TestRestore(t *testing.T) { |
| fs, cleanup := defaultFSStoreBackend(t) |
| defer cleanup() |
| |
| id1, err := fs.Set([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| _, err = fs.Set([]byte(`invalid`)) |
| assert.NilError(t, err) |
| |
| id2, err := fs.Set([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| assert.NilError(t, err) |
| |
| err = fs.SetMetadata(id2, "parent", []byte(id1)) |
| assert.NilError(t, err) |
| |
| mlgrMap := make(map[string]LayerGetReleaser) |
| mlgrMap[runtime.GOOS] = &mockLayerGetReleaser{} |
| is, err := NewImageStore(fs, mlgrMap) |
| assert.NilError(t, err) |
| |
| assert.Check(t, cmp.Len(is.Map(), 2)) |
| |
| img1, err := is.Get(ID(id1)) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(ID(id1), img1.computedID)) |
| assert.Check(t, cmp.Equal(string(id1), img1.computedID.String())) |
| |
| img2, err := is.Get(ID(id2)) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal("abc", img1.Comment)) |
| assert.Check(t, cmp.Equal("def", img2.Comment)) |
| |
| _, err = is.GetParent(ID(id1)) |
| assert.ErrorContains(t, err, "failed to read metadata") |
| |
| p, err := is.GetParent(ID(id2)) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(ID(id1), p)) |
| |
| children := is.Children(ID(id1)) |
| assert.Check(t, cmp.Len(children, 1)) |
| assert.Check(t, cmp.Equal(ID(id2), children[0])) |
| assert.Check(t, cmp.Len(is.Heads(), 1)) |
| |
| sid1, err := is.Search(string(id1)[:10]) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(ID(id1), sid1)) |
| |
| sid1, err = is.Search(id1.Hex()[:6]) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(ID(id1), sid1)) |
| |
| invalidPattern := id1.Hex()[1:6] |
| _, err = is.Search(invalidPattern) |
| assert.ErrorContains(t, err, "No such image") |
| } |
| |
| func TestAddDelete(t *testing.T) { |
| is, cleanup := defaultImageStore(t) |
| defer cleanup() |
| |
| id1, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(ID("sha256:8d25a9c45df515f9d0fe8e4a6b1c64dd3b965a84790ddbcc7954bb9bc89eb993"), id1)) |
| |
| img, err := is.Get(id1) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal("abc", img.Comment)) |
| |
| id2, err := is.Create([]byte(`{"comment": "def", "rootfs": {"type": "layers", "diff_ids": ["2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"]}}`)) |
| assert.NilError(t, err) |
| |
| err = is.SetParent(id2, id1) |
| assert.NilError(t, err) |
| |
| pid1, err := is.GetParent(id2) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(pid1, id1)) |
| |
| _, err = is.Delete(id1) |
| assert.NilError(t, err) |
| |
| _, err = is.Get(id1) |
| assert.ErrorContains(t, err, "failed to get digest") |
| |
| _, err = is.Get(id2) |
| assert.NilError(t, err) |
| |
| _, err = is.GetParent(id2) |
| assert.ErrorContains(t, err, "failed to read metadata") |
| } |
| |
| func TestSearchAfterDelete(t *testing.T) { |
| is, cleanup := defaultImageStore(t) |
| defer cleanup() |
| |
| id, err := is.Create([]byte(`{"comment": "abc", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| id1, err := is.Search(string(id)[:15]) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(id1, id)) |
| |
| _, err = is.Delete(id) |
| assert.NilError(t, err) |
| |
| _, err = is.Search(string(id)[:15]) |
| assert.ErrorContains(t, err, "No such image") |
| } |
| |
| func TestParentReset(t *testing.T) { |
| is, cleanup := defaultImageStore(t) |
| defer cleanup() |
| |
| id, err := is.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| id2, err := is.Create([]byte(`{"comment": "abc2", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| id3, err := is.Create([]byte(`{"comment": "abc3", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| assert.Check(t, is.SetParent(id, id2)) |
| assert.Check(t, cmp.Len(is.Children(id2), 1)) |
| |
| assert.Check(t, is.SetParent(id, id3)) |
| assert.Check(t, cmp.Len(is.Children(id2), 0)) |
| assert.Check(t, cmp.Len(is.Children(id3), 1)) |
| } |
| |
| func defaultImageStore(t *testing.T) (Store, func()) { |
| fsBackend, cleanup := defaultFSStoreBackend(t) |
| |
| mlgrMap := make(map[string]LayerGetReleaser) |
| mlgrMap[runtime.GOOS] = &mockLayerGetReleaser{} |
| store, err := NewImageStore(fsBackend, mlgrMap) |
| assert.NilError(t, err) |
| |
| return store, cleanup |
| } |
| |
| func TestGetAndSetLastUpdated(t *testing.T) { |
| store, cleanup := defaultImageStore(t) |
| defer cleanup() |
| |
| id, err := store.Create([]byte(`{"comment": "abc1", "rootfs": {"type": "layers"}}`)) |
| assert.NilError(t, err) |
| |
| updated, err := store.GetLastUpdated(id) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(updated.IsZero(), true)) |
| |
| assert.Check(t, store.SetLastUpdated(id)) |
| |
| updated, err = store.GetLastUpdated(id) |
| assert.NilError(t, err) |
| assert.Check(t, cmp.Equal(updated.IsZero(), false)) |
| } |
| |
| func TestStoreLen(t *testing.T) { |
| store, cleanup := defaultImageStore(t) |
| defer cleanup() |
| |
| expected := 10 |
| for i := 0; i < expected; i++ { |
| _, err := store.Create([]byte(fmt.Sprintf(`{"comment": "abc%d", "rootfs": {"type": "layers"}}`, i))) |
| assert.NilError(t, err) |
| } |
| numImages := store.Len() |
| assert.Equal(t, expected, numImages) |
| assert.Equal(t, len(store.Map()), numImages) |
| } |
| |
| type mockLayerGetReleaser struct{} |
| |
| func (ls *mockLayerGetReleaser) Get(layer.ChainID) (layer.Layer, error) { |
| return nil, nil |
| } |
| |
| func (ls *mockLayerGetReleaser) Release(layer.Layer) ([]layer.Metadata, error) { |
| return nil, nil |
| } |