Golang SignedManifest.Signatures方法代码示例

// put stores the manifest in the repository, if not already present. Any
// updated signatures will be stored, as well.
func (rs *revisionStore) put(ctx context.Context, sm *schema1.SignedManifest) (distribution.Descriptor, error) {
	// Resolve the payload in the manifest.
	payload, err := sm.Payload()
	if err != nil {
		return distribution.Descriptor{}, err
	}

	// Digest and store the manifest payload in the blob store.
	revision, err := rs.blobStore.Put(ctx, schema1.ManifestMediaType, payload)
	if err != nil {
		context.GetLogger(ctx).Errorf("error putting payload into blobstore: %v", err)
		return distribution.Descriptor{}, err
	}

	// Link the revision into the repository.
	if err := rs.blobStore.linkBlob(ctx, revision); err != nil {
		return distribution.Descriptor{}, err
	}

	// Grab each json signature and store them.
	signatures, err := sm.Signatures()
	if err != nil {
		return distribution.Descriptor{}, err
	}

	if err := rs.repository.Signatures().Put(revision.Digest, signatures...); err != nil {
		return distribution.Descriptor{}, err
	}

	return revision, nil
}

// signedManifestFillImageMetadata fills a given image with metadata. It also corrects layer sizes with blob sizes. Newer
// Docker client versions don't set layer sizes in the manifest at all. Origin master needs correct layer
// sizes for proper image quota support. That's why we need to fill the metadata in the registry.
func (r *repository) signedManifestFillImageMetadata(manifest *schema1.SignedManifest, image *imageapi.Image) error {
	signatures, err := manifest.Signatures()
	if err != nil {
		return err
	}

	for _, signDigest := range signatures {
		image.DockerImageSignatures = append(image.DockerImageSignatures, signDigest)
	}

	if err := imageapi.ImageWithMetadata(image); err != nil {
		return err
	}

	refs := manifest.References()

	blobSet := sets.NewString()
	image.DockerImageMetadata.Size = int64(0)

	blobs := r.Blobs(r.ctx)
	for i := range image.DockerImageLayers {
		layer := &image.DockerImageLayers[i]
		// DockerImageLayers represents manifest.Manifest.FSLayers in reversed order
		desc, err := blobs.Stat(r.ctx, refs[len(image.DockerImageLayers)-i-1].Digest)
		if err != nil {
			context.GetLogger(r.ctx).Errorf("failed to stat blobs %s of image %s", layer.Name, image.DockerImageReference)
			return err
		}
		if layer.MediaType == "" {
			if desc.MediaType != "" {
				layer.MediaType = desc.MediaType
			} else {
				layer.MediaType = schema1.MediaTypeManifestLayer
			}
		}
		layer.LayerSize = desc.Size
		// count empty layer just once (empty layer may actually have non-zero size)
		if !blobSet.Has(layer.Name) {
			image.DockerImageMetadata.Size += desc.Size
			blobSet.Insert(layer.Name)
		}
	}
	if len(image.DockerImageConfig) > 0 && !blobSet.Has(image.DockerImageMetadata.ID) {
		blobSet.Insert(image.DockerImageMetadata.ID)
		image.DockerImageMetadata.Size += int64(len(image.DockerImageConfig))
	}

	return nil
}

//.........这里部分代码省略.........
	dec := json.NewDecoder(resp.Body)

	if err := dec.Decode(&fetchedManifest); err != nil {
		t.Fatalf("error decoding fetched manifest: %v", err)
	}

	if !bytes.Equal(fetchedManifest.Canonical, signedManifest.Canonical) {
		t.Fatalf("manifests do not match")
	}

	// ---------------
	// Fetch by digest
	resp, err = http.Get(manifestDigestURL)
	checkErr(t, err, "fetching manifest by digest")
	defer resp.Body.Close()

	checkResponse(t, "fetching uploaded manifest", resp, http.StatusOK)
	checkHeaders(t, resp, http.Header{
		"Docker-Content-Digest": []string{dgst.String()},
		"ETag":                  []string{fmt.Sprintf(`"%s"`, dgst)},
	})

	var fetchedManifestByDigest schema1.SignedManifest
	dec = json.NewDecoder(resp.Body)
	if err := dec.Decode(&fetchedManifestByDigest); err != nil {
		t.Fatalf("error decoding fetched manifest: %v", err)
	}

	if !bytes.Equal(fetchedManifestByDigest.Canonical, signedManifest.Canonical) {
		t.Fatalf("manifests do not match")
	}

	// check signature was roundtripped
	signatures, err := fetchedManifestByDigest.Signatures()
	if err != nil {
		t.Fatal(err)
	}

	if len(signatures) != 1 {
		t.Fatalf("expected 1 signature from manifest, got: %d", len(signatures))
	}

	// Re-sign, push and pull the same digest
	sm2, err := schema1.Sign(&fetchedManifestByDigest.Manifest, env.pk)
	if err != nil {
		t.Fatal(err)

	}

	resp = putManifest(t, "re-putting signed manifest", manifestDigestURL, sm2)
	checkResponse(t, "re-putting signed manifest", resp, http.StatusCreated)

	resp, err = http.Get(manifestDigestURL)
	checkErr(t, err, "re-fetching manifest by digest")
	defer resp.Body.Close()

	checkResponse(t, "re-fetching uploaded manifest", resp, http.StatusOK)
	checkHeaders(t, resp, http.Header{
		"Docker-Content-Digest": []string{dgst.String()},
		"ETag":                  []string{fmt.Sprintf(`"%s"`, dgst)},
	})

	dec = json.NewDecoder(resp.Body)
	if err := dec.Decode(&fetchedManifestByDigest); err != nil {
		t.Fatalf("error decoding fetched manifest: %v", err)
	}

// Put creates or updates the named manifest.
func (r *repository) Put(manifest *schema1.SignedManifest) error {
	// Resolve the payload in the manifest.
	payload, err := manifest.Payload()
	if err != nil {
		return err
	}

	// Calculate digest
	dgst, err := digest.FromBytes(payload)
	if err != nil {
		return err
	}

	// Upload to openshift
	ism := imageapi.ImageStreamMapping{
		ObjectMeta: kapi.ObjectMeta{
			Namespace: r.namespace,
			Name:      r.name,
		},
		Tag: manifest.Tag,
		Image: imageapi.Image{
			ObjectMeta: kapi.ObjectMeta{
				Name: dgst.String(),
				Annotations: map[string]string{
					imageapi.ManagedByOpenShiftAnnotation: "true",
				},
			},
			DockerImageReference: fmt.Sprintf("%s/%s/%[email protected]%s", r.registryAddr, r.namespace, r.name, dgst.String()),
			DockerImageManifest:  string(payload),
		},
	}

	if err := r.registryClient.ImageStreamMappings(r.namespace).Create(&ism); err != nil {
		// if the error was that the image stream wasn't found, try to auto provision it
		statusErr, ok := err.(*kerrors.StatusError)
		if !ok {
			context.GetLogger(r.ctx).Errorf("Error creating ImageStreamMapping: %s", err)
			return err
		}

		status := statusErr.ErrStatus
		if status.Code != http.StatusNotFound || status.Details.Kind != "imageStream" || status.Details.Name != r.name {
			context.GetLogger(r.ctx).Errorf("Error creating ImageStreamMapping: %s", err)
			return err
		}

		stream := imageapi.ImageStream{
			ObjectMeta: kapi.ObjectMeta{
				Name: r.name,
			},
		}

		client, ok := UserClientFrom(r.ctx)
		if !ok {
			context.GetLogger(r.ctx).Errorf("Error creating user client to auto provision image stream: Origin user client unavailable")
			return statusErr
		}

		if _, err := client.ImageStreams(r.namespace).Create(&stream); err != nil {
			context.GetLogger(r.ctx).Errorf("Error auto provisioning image stream: %s", err)
			return statusErr
		}

		// try to create the ISM again
		if err := r.registryClient.ImageStreamMappings(r.namespace).Create(&ism); err != nil {
			context.GetLogger(r.ctx).Errorf("Error creating image stream mapping: %s", err)
			return err
		}
	}

	// Grab each json signature and store them.
	signatures, err := manifest.Signatures()
	if err != nil {
		return err
	}

	for _, signature := range signatures {
		if err := r.Signatures().Put(dgst, signature); err != nil {
			context.GetLogger(r.ctx).Errorf("Error storing signature: %s", err)
			return err
		}
	}

	return nil
}