690 lines
19 KiB
Go
690 lines
19 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package client
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"hash/fnv"
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"io"
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"math/rand"
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"os"
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"reflect"
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"runtime"
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"strings"
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"sync"
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"testing"
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"time"
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. "github.com/containerd/containerd"
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"github.com/containerd/containerd/archive/compression"
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"github.com/containerd/containerd/archive/tartest"
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"github.com/containerd/containerd/images"
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"github.com/containerd/containerd/images/archive"
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"github.com/containerd/containerd/leases"
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"github.com/containerd/containerd/oci"
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"github.com/containerd/containerd/pkg/transfer"
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tarchive "github.com/containerd/containerd/pkg/transfer/archive"
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"github.com/containerd/containerd/pkg/transfer/image"
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"github.com/containerd/containerd/platforms"
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digest "github.com/opencontainers/go-digest"
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specs "github.com/opencontainers/image-spec/specs-go"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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)
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// TestExportAndImport exports testImage as a tar stream,
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// and import the tar stream as a new image.
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func TestExportAndImport(t *testing.T) {
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testExportImport(t, testImage)
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}
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// TestExportAndImportMultiLayer exports testMultiLayeredImage as a tar stream,
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// and import the tar stream as a new image. This should ensure that imported
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// images remain sane, and that the Garbage Collector won't delete part of its
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// content.
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func TestExportAndImportMultiLayer(t *testing.T) {
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testExportImport(t, testMultiLayeredImage)
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}
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func testExportImport(t *testing.T, imageName string) {
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if testing.Short() {
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t.Skip()
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}
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ctx, cancel := testContext(t)
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defer cancel()
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client, err := New(address)
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if err != nil {
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t.Fatal(err)
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}
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defer client.Close()
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_, err = client.Fetch(ctx, imageName)
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if err != nil {
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t.Fatal(err)
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}
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dstFile, err := os.CreateTemp("", "export-import-test")
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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dstFile.Close()
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os.Remove(dstFile.Name())
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}()
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err = client.Export(ctx, dstFile, archive.WithPlatform(platforms.Default()), archive.WithImage(client.ImageService(), imageName))
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if err != nil {
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t.Fatal(err)
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}
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client.ImageService().Delete(ctx, imageName)
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// Seek to beginning of file in preparation for Import()
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dstFile.Seek(0, 0)
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opts := []ImportOpt{
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WithImageRefTranslator(archive.AddRefPrefix("foo/bar")),
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}
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imgrecs, err := client.Import(ctx, dstFile, opts...)
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if err != nil {
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t.Fatalf("Import failed: %+v", err)
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}
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// We need to unpack the image, especially if it's multilayered.
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for _, img := range imgrecs {
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image := NewImage(client, img)
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// TODO: Show unpack status
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t.Logf("unpacking %s (%s)...", img.Name, img.Target.Digest)
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err = image.Unpack(ctx, "")
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if err != nil {
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t.Fatalf("Error while unpacking image: %+v", err)
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}
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t.Log("done")
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}
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// we're triggering the Garbage Collector to do its job.
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ls := client.LeasesService()
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l, err := ls.Create(ctx, leases.WithRandomID(), leases.WithExpiration(time.Hour))
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if err != nil {
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t.Fatalf("Error while creating lease: %+v", err)
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}
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if err = ls.Delete(ctx, l, leases.SynchronousDelete); err != nil {
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t.Fatalf("Error while deleting lease: %+v", err)
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}
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image, err := client.GetImage(ctx, imageName)
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if err != nil {
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t.Fatal(err)
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}
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id := t.Name()
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container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image)))
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if err != nil {
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t.Fatalf("Error while creating container: %+v", err)
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}
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container.Delete(ctx, WithSnapshotCleanup)
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for _, imgrec := range imgrecs {
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if imgrec.Name == testImage {
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continue
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}
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err = client.ImageService().Delete(ctx, imgrec.Name)
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if err != nil {
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t.Fatal(err)
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}
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}
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}
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func TestImport(t *testing.T) {
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ctx, cancel := testContext(t)
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defer cancel()
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client, err := newClient(t, address)
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if err != nil {
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t.Fatal(err)
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}
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defer client.Close()
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tc := tartest.TarContext{}
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b1, d1 := createContent(256, 1)
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empty := []byte("{}")
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version := []byte("1.0")
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c1, d2 := createConfig(runtime.GOOS, runtime.GOARCH, "test")
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badConfig, _ := createConfig("foo", "lish", "test")
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m1, d3, expManifest := createManifest(c1, [][]byte{b1})
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provider := client.ContentStore()
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checkManifest := func(ctx context.Context, t *testing.T, d ocispec.Descriptor, expManifest *ocispec.Manifest) {
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m, err := images.Manifest(ctx, provider, d, nil)
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if err != nil {
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t.Fatalf("unable to read target blob: %+v", err)
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}
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if m.Config.Digest != d2 {
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t.Fatalf("unexpected digest hash %s, expected %s", m.Config.Digest, d2)
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}
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if len(m.Layers) != 1 {
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t.Fatalf("expected 1 layer, has %d", len(m.Layers))
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}
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if m.Layers[0].Digest != d1 {
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t.Fatalf("unexpected layer hash %s, expected %s", m.Layers[0].Digest, d1)
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}
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if expManifest != nil {
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if !reflect.DeepEqual(m.Layers, expManifest.Layers) {
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t.Fatalf("DeepEqual on Layers failed: %v vs. %v", m.Layers, expManifest.Layers)
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}
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if !reflect.DeepEqual(m.Config, expManifest.Config) {
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t.Fatalf("DeepEqual on Config failed: %v vs. %v", m.Config, expManifest.Config)
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}
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}
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}
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for _, tc := range []struct {
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Name string
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Writer tartest.WriterToTar
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Check func(*testing.T, []images.Image)
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Opts []ImportOpt
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}{
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{
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Name: "DockerV2.0",
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Writer: tartest.TarAll(
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tc.Dir("bd765cd43e95212f7aa2cab51d0a", 0755),
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tc.File("bd765cd43e95212f7aa2cab51d0a/json", empty, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/layer.tar", b1, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/VERSION", version, 0644),
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tc.File("repositories", []byte(`{"any":{"1":"bd765cd43e95212f7aa2cab51d0a"}}`), 0644),
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),
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},
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{
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Name: "DockerV2.1",
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Writer: tartest.TarAll(
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tc.Dir("bd765cd43e95212f7aa2cab51d0a", 0755),
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tc.File("bd765cd43e95212f7aa2cab51d0a/json", empty, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/layer.tar", b1, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/VERSION", version, 0644),
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tc.File("e95212f7aa2cab51d0abd765cd43.json", c1, 0644),
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tc.File("manifest.json", []byte(`[{"Config":"e95212f7aa2cab51d0abd765cd43.json","RepoTags":["test-import:notlatest", "another/repo:tag"],"Layers":["bd765cd43e95212f7aa2cab51d0a/layer.tar"]}]`), 0644),
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),
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Check: func(t *testing.T, imgs []images.Image) {
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if len(imgs) == 0 {
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t.Fatalf("no images")
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}
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names := []string{
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"docker.io/library/test-import:notlatest",
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"docker.io/another/repo:tag",
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}
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checkImages(t, imgs[0].Target.Digest, imgs, names...)
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checkManifest(ctx, t, imgs[0].Target, nil)
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},
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},
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{
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Name: "DockerV2.1-BadOSArch",
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Writer: tartest.TarAll(
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tc.Dir("bd765cd43e95212f7aa2cab51d0a", 0755),
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tc.File("bd765cd43e95212f7aa2cab51d0a/json", empty, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/layer.tar", b1, 0644),
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tc.File("bd765cd43e95212f7aa2cab51d0a/VERSION", version, 0644),
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tc.File("e95212f7aa2cab51d0abd765cd43.json", badConfig, 0644),
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tc.File("manifest.json", []byte(`[{"Config":"e95212f7aa2cab51d0abd765cd43.json","RepoTags":["test-import:notlatest", "another/repo:tag"],"Layers":["bd765cd43e95212f7aa2cab51d0a/layer.tar"]}]`), 0644),
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),
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},
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{
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Name: "OCI-BadFormat",
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Writer: tartest.TarAll(
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tc.File("oci-layout", []byte(`{"imageLayoutVersion":"2.0.0"}`), 0644),
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),
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},
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{
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Name: "OCI",
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Writer: tartest.TarAll(
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tc.Dir("blobs", 0755),
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tc.Dir("blobs/sha256", 0755),
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tc.File("blobs/sha256/"+d1.Encoded(), b1, 0644),
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tc.File("blobs/sha256/"+d2.Encoded(), c1, 0644),
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tc.File("blobs/sha256/"+d3.Encoded(), m1, 0644),
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tc.File("index.json", createIndex(m1, "latest", "docker.io/lib/img:ok"), 0644),
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tc.File("oci-layout", []byte(`{"imageLayoutVersion":"1.0.0"}`), 0644),
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),
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Check: func(t *testing.T, imgs []images.Image) {
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names := []string{
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"latest",
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"docker.io/lib/img:ok",
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}
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checkImages(t, d3, imgs, names...)
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checkManifest(ctx, t, imgs[0].Target, expManifest)
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},
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},
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{
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Name: "OCIPrefixName",
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Writer: tartest.TarAll(
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tc.Dir("blobs", 0755),
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tc.Dir("blobs/sha256", 0755),
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tc.File("blobs/sha256/"+d1.Encoded(), b1, 0644),
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tc.File("blobs/sha256/"+d2.Encoded(), c1, 0644),
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tc.File("blobs/sha256/"+d3.Encoded(), m1, 0644),
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tc.File("index.json", createIndex(m1, "latest", "docker.io/lib/img:ok"), 0644),
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tc.File("oci-layout", []byte(`{"imageLayoutVersion":"1.0.0"}`), 0644),
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),
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Check: func(t *testing.T, imgs []images.Image) {
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names := []string{
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"localhost:5000/myimage:latest",
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"docker.io/lib/img:ok",
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}
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checkImages(t, d3, imgs, names...)
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checkManifest(ctx, t, imgs[0].Target, expManifest)
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},
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Opts: []ImportOpt{
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WithImageRefTranslator(archive.AddRefPrefix("localhost:5000/myimage")),
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},
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},
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{
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Name: "OCIPrefixName2",
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Writer: tartest.TarAll(
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tc.Dir("blobs", 0755),
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tc.Dir("blobs/sha256", 0755),
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tc.File("blobs/sha256/"+d1.Encoded(), b1, 0644),
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tc.File("blobs/sha256/"+d2.Encoded(), c1, 0644),
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tc.File("blobs/sha256/"+d3.Encoded(), m1, 0644),
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tc.File("index.json", createIndex(m1, "latest", "localhost:5000/myimage:old", "docker.io/lib/img:ok"), 0644),
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tc.File("oci-layout", []byte(`{"imageLayoutVersion":"1.0.0"}`), 0644),
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),
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Check: func(t *testing.T, imgs []images.Image) {
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names := []string{
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"localhost:5000/myimage:latest",
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"localhost:5000/myimage:old",
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}
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checkImages(t, d3, imgs, names...)
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checkManifest(ctx, t, imgs[0].Target, expManifest)
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},
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Opts: []ImportOpt{
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WithImageRefTranslator(archive.FilterRefPrefix("localhost:5000/myimage")),
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},
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},
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} {
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t.Run(tc.Name, func(t *testing.T) {
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images, err := client.Import(ctx, tartest.TarFromWriterTo(tc.Writer), tc.Opts...)
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if err != nil {
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if tc.Check != nil {
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t.Errorf("unexpected import error: %+v", err)
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}
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return
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} else if tc.Check == nil {
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t.Fatalf("expected error on import")
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}
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tc.Check(t, images)
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})
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}
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}
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func checkImages(t *testing.T, target digest.Digest, actual []images.Image, names ...string) {
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if len(names) != len(actual) {
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t.Fatalf("expected %d images, got %d", len(names), len(actual))
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}
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for i, n := range names {
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if actual[i].Target.Digest != target {
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t.Fatalf("image(%d) unexpected target %s, expected %s", i, actual[i].Target.Digest, target)
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}
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if actual[i].Name != n {
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t.Fatalf("image(%d) unexpected name %q, expected %q", i, actual[i].Name, n)
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}
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if actual[i].Target.MediaType != ocispec.MediaTypeImageManifest &&
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actual[i].Target.MediaType != images.MediaTypeDockerSchema2Manifest {
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t.Fatalf("image(%d) unexpected media type: %s", i, actual[i].Target.MediaType)
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}
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}
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}
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func createContent(size int64, seed int64) ([]byte, digest.Digest) {
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b, err := io.ReadAll(io.LimitReader(rand.New(rand.NewSource(seed)), size))
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if err != nil {
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panic(err)
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}
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wb := bytes.NewBuffer(nil)
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cw, err := compression.CompressStream(wb, compression.Gzip)
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if err != nil {
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panic(err)
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}
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if _, err := cw.Write(b); err != nil {
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panic(err)
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}
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b = wb.Bytes()
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return b, digest.FromBytes(b)
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}
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func createConfig(osName, archName, author string) ([]byte, digest.Digest) {
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image := ocispec.Image{
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OS: osName,
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Architecture: archName,
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Author: author,
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}
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b, _ := json.Marshal(image)
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return b, digest.FromBytes(b)
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}
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func createManifest(config []byte, layers [][]byte) ([]byte, digest.Digest, *ocispec.Manifest) {
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manifest := ocispec.Manifest{
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Versioned: specs.Versioned{
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SchemaVersion: 2,
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},
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Config: ocispec.Descriptor{
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MediaType: ocispec.MediaTypeImageConfig,
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Digest: digest.FromBytes(config),
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Size: int64(len(config)),
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Annotations: map[string]string{
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"ocispec": "manifest.config.descriptor",
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},
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},
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}
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for _, l := range layers {
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manifest.Layers = append(manifest.Layers, ocispec.Descriptor{
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MediaType: ocispec.MediaTypeImageLayer,
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Digest: digest.FromBytes(l),
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Size: int64(len(l)),
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Annotations: map[string]string{
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"ocispec": "manifest.layers.descriptor",
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},
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})
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}
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b, _ := json.Marshal(manifest)
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return b, digest.FromBytes(b), &manifest
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}
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func createIndex(manifest []byte, tags ...string) []byte {
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idx := ocispec.Index{
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Versioned: specs.Versioned{
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SchemaVersion: 2,
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},
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}
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d := ocispec.Descriptor{
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MediaType: ocispec.MediaTypeImageManifest,
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Digest: digest.FromBytes(manifest),
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Size: int64(len(manifest)),
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}
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if len(tags) == 0 {
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idx.Manifests = append(idx.Manifests, d)
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} else {
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for _, t := range tags {
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dt := d
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dt.Annotations = map[string]string{
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ocispec.AnnotationRefName: t,
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}
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idx.Manifests = append(idx.Manifests, dt)
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}
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}
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b, _ := json.Marshal(idx)
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return b
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}
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func TestTransferImport(t *testing.T) {
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ctx, cancel := testContext(t)
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defer cancel()
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client, err := newClient(t, address)
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if err != nil {
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t.Fatal(err)
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}
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defer client.Close()
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for _, testCase := range []struct {
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// Name is the name of the test
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Name string
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// Images is the names of the images to create
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// [0]: Index name or ""
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// [1:]: Additional images and manifest to import
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// Images ending with @ will have digest appended and use the digest of the previously imported image
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// A space can be used to seperate a repo name and tag, only the tag will be set in the imported image
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Images []string
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Opts []image.StoreOpt
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}{
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{
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Name: "Basic",
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Images: []string{"", "registry.test/basic:latest"},
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|
Opts: []image.StoreOpt{image.WithNamedPrefix("unused", true)},
|
|
},
|
|
{
|
|
Name: "IndexRef",
|
|
Images: []string{"registry.test/index-ref:latest", ""},
|
|
},
|
|
{
|
|
Name: "AllRefs",
|
|
Images: []string{"registry.test/all-refs:index", "registry.test/all-refs:1"},
|
|
Opts: []image.StoreOpt{image.WithNamedPrefix("registry.test/all-refs", false)},
|
|
},
|
|
{
|
|
Name: "DigestRefs",
|
|
Images: []string{"registry.test/all-refs:index", "registry.test/all-refs:1", "registry.test/all-refs@"},
|
|
Opts: []image.StoreOpt{image.WithDigestRef("registry.test/all-refs", false, false)},
|
|
},
|
|
{
|
|
Name: "DigestRefsSkipNamed",
|
|
Images: []string{"registry.test/all-refs:index", "registry.test/all-refs:1"},
|
|
Opts: []image.StoreOpt{image.WithDigestRef("registry.test/all-refs", false, true)},
|
|
},
|
|
{
|
|
Name: "DigestOnly",
|
|
Images: []string{"", "", "imported-image@"},
|
|
Opts: []image.StoreOpt{image.WithDigestRef("imported-image", false, true)},
|
|
},
|
|
{
|
|
Name: "OverwriteDigestRefs",
|
|
Images: []string{"registry.test/all-refs:index", "registry.test/all-refs:1", "someimportname@"},
|
|
Opts: []image.StoreOpt{image.WithDigestRef("someimportname", true, false)},
|
|
},
|
|
{
|
|
Name: "TagOnlyRef",
|
|
Images: []string{"", "registry.test/myimage thebest"},
|
|
Opts: []image.StoreOpt{image.WithNamedPrefix("registry.test/myimage", false)},
|
|
},
|
|
{
|
|
Name: "TagOnlyOverwriteDigestRefs",
|
|
Images: []string{"registry.test/all-refs:index", "registry.test/basename latest", "registry.test/basename@"},
|
|
Opts: []image.StoreOpt{image.WithDigestRef("registry.test/basename", true, false)},
|
|
},
|
|
} {
|
|
testCase := testCase
|
|
t.Run(testCase.Name, func(t *testing.T) {
|
|
tc := tartest.TarContext{}
|
|
files := []tartest.WriterToTar{
|
|
tc.Dir("blobs", 0755),
|
|
tc.Dir("blobs/sha256", 0755),
|
|
}
|
|
|
|
descs, tws := createImages(tc, testCase.Images...)
|
|
files = append(files, tws...)
|
|
|
|
files = append(files, tc.File("oci-layout", []byte(`{"imageLayoutVersion":"1.0.0"}`), 0644))
|
|
|
|
r := tartest.TarFromWriterTo(tartest.TarAll(files...))
|
|
|
|
var idxName string
|
|
if len(testCase.Images) > 0 {
|
|
idxName = testCase.Images[0]
|
|
}
|
|
|
|
is := image.NewStore(idxName, testCase.Opts...)
|
|
|
|
iis := tarchive.NewImageImportStream(r, "")
|
|
|
|
progressTracker := &imagesProgress{}
|
|
|
|
err := client.Transfer(ctx, iis, is, transfer.WithProgress(progressTracker.Progress))
|
|
closeErr := r.Close()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if closeErr != nil {
|
|
t.Fatal(closeErr)
|
|
}
|
|
|
|
imgs := progressTracker.getImages()
|
|
if len(descs) != len(imgs) {
|
|
t.Fatalf("unexpected number of images saved:\n\t(%d) %v\nexpected image map:\n\t(%d) %v", len(imgs), imgs, len(descs), descs)
|
|
}
|
|
store := client.ImageService()
|
|
for _, image := range imgs {
|
|
desc, ok := descs[image]
|
|
if !ok {
|
|
t.Fatalf("saved image %q not found in expected list\nimages saved:\n\t(%d) %v\nexpected image map:\n\t(%d) %v", image, len(progressTracker.images), progressTracker.images, len(descs), descs)
|
|
}
|
|
img, err := store.Get(ctx, image)
|
|
if err != nil {
|
|
t.Fatalf("error getting image %s: %v", image, err)
|
|
}
|
|
if img.Target.Digest != desc.Digest {
|
|
t.Fatalf("digests don't match for %s: got %s, expected %s", image, img.Target.Digest, desc.Digest)
|
|
}
|
|
if img.Target.MediaType != desc.MediaType {
|
|
t.Fatalf("media type don't match for %s: got %s, expected %s", image, img.Target.MediaType, desc.MediaType)
|
|
}
|
|
if img.Target.Size != desc.Size {
|
|
t.Fatalf("size don't match for %s: got %d, expected %d", image, img.Target.Size, desc.Size)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
type imagesProgress struct {
|
|
sync.Mutex
|
|
images []string
|
|
}
|
|
|
|
func (ip *imagesProgress) Progress(p transfer.Progress) {
|
|
ip.Lock()
|
|
if p.Event == "saved" {
|
|
ip.images = append(ip.images, p.Name)
|
|
}
|
|
ip.Unlock()
|
|
}
|
|
|
|
func (ip *imagesProgress) getImages() []string {
|
|
ip.Lock()
|
|
imgs := ip.images
|
|
ip.Unlock()
|
|
return imgs
|
|
|
|
}
|
|
|
|
func createImages(tc tartest.TarContext, imageNames ...string) (descs map[string]ocispec.Descriptor, tw []tartest.WriterToTar) {
|
|
descs = map[string]ocispec.Descriptor{}
|
|
idx := ocispec.Index{
|
|
Versioned: specs.Versioned{
|
|
SchemaVersion: 2,
|
|
},
|
|
}
|
|
|
|
if len(imageNames) > 1 {
|
|
var lastManifest ocispec.Descriptor
|
|
|
|
for _, image := range imageNames[1:] {
|
|
if image != "" && image[len(image)-1] == '@' {
|
|
image = image[:len(image)-1]
|
|
descs[fmt.Sprintf("%s@%s", image, lastManifest.Digest)] = lastManifest
|
|
continue
|
|
}
|
|
seed := hash64(image)
|
|
bb, b := createContent(128, seed)
|
|
tw = append(tw, tc.File("blobs/sha256/"+b.Encoded(), bb, 0644))
|
|
|
|
cb, c := createConfig("linux", "amd64", image)
|
|
tw = append(tw, tc.File("blobs/sha256/"+c.Encoded(), cb, 0644))
|
|
|
|
mb, m, _ := createManifest(cb, [][]byte{bb})
|
|
tw = append(tw, tc.File("blobs/sha256/"+m.Encoded(), mb, 0644))
|
|
|
|
annotations := map[string]string{}
|
|
if image != "" {
|
|
if parts := strings.SplitN(image, " ", 2); len(parts) == 2 {
|
|
annotations[ocispec.AnnotationRefName] = parts[1]
|
|
image = strings.Join(parts, ":")
|
|
} else {
|
|
annotations[images.AnnotationImageName] = image
|
|
}
|
|
}
|
|
|
|
md := ocispec.Descriptor{
|
|
Digest: m,
|
|
Size: int64(len(mb)),
|
|
MediaType: ocispec.MediaTypeImageManifest,
|
|
Annotations: annotations,
|
|
}
|
|
|
|
// If image is empty, but has base and digest, still use digest
|
|
// If image is not a full reference, then add base if provided?
|
|
if image != "" {
|
|
descs[image] = md
|
|
}
|
|
|
|
idx.Manifests = append(idx.Manifests, md)
|
|
lastManifest = md
|
|
}
|
|
}
|
|
|
|
ib, _ := json.Marshal(idx)
|
|
id := ocispec.Descriptor{
|
|
Digest: digest.FromBytes(ib),
|
|
Size: int64(len(ib)),
|
|
MediaType: ocispec.MediaTypeImageIndex,
|
|
}
|
|
tw = append(tw, tc.File("index.json", ib, 0644))
|
|
|
|
var idxName string
|
|
if len(imageNames) > 0 {
|
|
idxName = imageNames[0]
|
|
}
|
|
if idxName != "" {
|
|
descs[idxName] = id
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func hash64(s string) int64 {
|
|
h := fnv.New64a()
|
|
h.Write([]byte(s))
|
|
return int64(h.Sum64())
|
|
}
|