Golang SignedManifest.Payload方法代码示例

func schema1ToImage(manifest *schema1.SignedManifest, d digest.Digest) (*api.Image, error) {
	if len(manifest.History) == 0 {
		return nil, fmt.Errorf("image has no v1Compatibility history and cannot be used")
	}
	dockerImage, err := unmarshalDockerImage([]byte(manifest.History[0].V1Compatibility))
	if err != nil {
		return nil, err
	}
	mediatype, payload, err := manifest.Payload()
	if err != nil {
		return nil, err
	}

	if len(d) > 0 {
		dockerImage.ID = d.String()
	} else {
		dockerImage.ID = digest.FromBytes(manifest.Canonical).String()
	}
	image := &api.Image{
		ObjectMeta: kapi.ObjectMeta{
			Name: dockerImage.ID,
		},
		DockerImageMetadata:          *dockerImage,
		DockerImageManifest:          string(payload),
		DockerImageManifestMediaType: mediatype,
		DockerImageMetadataVersion:   "1.0",
	}

	return image, nil
}

// 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
}

func digestFromManifest(m *schema1.SignedManifest) (digest.Digest, error) {
	payload, err := m.Payload()
	if err != nil {
		return "", err
	}
	manifestDigest, err := digest.FromBytes(payload)
	return manifestDigest, nil
}

func digestFromManifest(m *schema1.SignedManifest, localName string) (digest.Digest, int, error) {
	payload, err := m.Payload()
	if err != nil {
		// If this failed, the signatures section was corrupted
		// or missing. Treat the entire manifest as the payload.
		payload = m.Raw
	}
	manifestDigest, err := digest.FromBytes(payload)
	if err != nil {
		logrus.Infof("Could not compute manifest digest for %s:%s : %v", localName, m.Tag, err)
	}
	return manifestDigest, len(payload), nil
}

func manifestDigest(sm *schema1.SignedManifest) (digest.Digest, error) {
	payload, err := sm.Payload()
	if err != nil {
		return "", err

	}

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

	return dgst, nil
}

func verifyManifest(signedManifest *schema1.SignedManifest, tag string) (m *schema1.Manifest, err error) {
	// If pull by digest, then verify the manifest digest. NOTE: It is
	// important to do this first, before any other content validation. If the
	// digest cannot be verified, don't even bother with those other things.
	if manifestDigest, err := digest.ParseDigest(tag); err == nil {
		verifier, err := digest.NewDigestVerifier(manifestDigest)
		if err != nil {
			return nil, err
		}
		payload, err := signedManifest.Payload()
		if err != nil {
			// If this failed, the signatures section was corrupted
			// or missing. Treat the entire manifest as the payload.
			payload = signedManifest.Raw
		}
		if _, err := verifier.Write(payload); err != nil {
			return nil, err
		}
		if !verifier.Verified() {
			err := fmt.Errorf("image verification failed for digest %s", manifestDigest)
			logrus.Error(err)
			return nil, err
		}

		var verifiedManifest schema1.Manifest
		if err = json.Unmarshal(payload, &verifiedManifest); err != nil {
			return nil, err
		}
		m = &verifiedManifest
	} else {
		m = &signedManifest.Manifest
	}

	if m.SchemaVersion != 1 {
		return nil, fmt.Errorf("unsupported schema version %d for tag %q", m.SchemaVersion, tag)
	}
	if len(m.FSLayers) != len(m.History) {
		return nil, fmt.Errorf("length of history not equal to number of layers for tag %q", tag)
	}
	if len(m.FSLayers) == 0 {
		return nil, fmt.Errorf("no FSLayers in manifest for tag %q", tag)
	}
	return m, nil
}

// ManifestMatchesImage returns true if the provided manifest matches the name of the image.
func ManifestMatchesImage(image *Image, newManifest []byte) (bool, error) {
	dgst, err := digest.ParseDigest(image.Name)
	if err != nil {
		return false, err
	}
	v, err := digest.NewDigestVerifier(dgst)
	if err != nil {
		return false, err
	}
	sm := schema1.SignedManifest{Raw: newManifest}
	raw, err := sm.Payload()
	if err != nil {
		return false, err
	}
	if _, err := v.Write(raw); err != nil {
		return false, err
	}
	return v.Verified(), nil
}

// digestManifest takes a digest of the given manifest. This belongs somewhere
// better but we'll wait for a refactoring cycle to find that real somewhere.
func digestManifest(ctx context.Context, sm *schema1.SignedManifest) (digest.Digest, error) {
	p, err := sm.Payload()
	if err != nil {
		if !strings.Contains(err.Error(), "missing signature key") {
			ctxu.GetLogger(ctx).Errorf("error getting manifest payload: %v", err)
			return "", err
		}

		// NOTE(stevvooe): There are no signatures but we still have a
		// payload. The request will fail later but this is not the
		// responsibility of this part of the code.
		p = sm.Raw
	}

	dgst, err := digest.FromBytes(p)
	if err != nil {
		ctxu.GetLogger(ctx).Errorf("error digesting manifest: %v", err)
		return "", err
	}

	return dgst, err
}

func schema1ToImage(manifest *schema1.SignedManifest, d digest.Digest) (*api.Image, error) {
	if len(manifest.History) == 0 {
		return nil, fmt.Errorf("image has no v1Compatibility history and cannot be used")
	}
	dockerImage, err := unmarshalDockerImage([]byte(manifest.History[0].V1Compatibility))
	if err != nil {
		return nil, err
	}
	if len(d) > 0 {
		dockerImage.ID = d.String()
	} else {
		if p, err := manifest.Payload(); err == nil {
			d, err := digest.FromBytes(p)
			if err != nil {
				return nil, fmt.Errorf("unable to create digest from image payload: %v", err)
			}
			dockerImage.ID = d.String()
		} else {
			d, err := digest.FromBytes(manifest.Raw)
			if err != nil {
				return nil, fmt.Errorf("unable to create digest from image bytes: %v", err)
			}
			dockerImage.ID = d.String()
		}
	}
	image := &api.Image{
		ObjectMeta: kapi.ObjectMeta{
			Name: dockerImage.ID,
		},
		DockerImageMetadata:        *dockerImage,
		DockerImageManifest:        string(manifest.Raw),
		DockerImageMetadataVersion: "1.0",
	}

	return image, nil
}

func (b *bridge) createManifestEvent(action string, repo string, sm *schema1.SignedManifest) (*Event, error) {
	event := b.createEvent(action)
	event.Target.MediaType = schema1.ManifestMediaType
	event.Target.Repository = repo

	p, err := sm.Payload()
	if err != nil {
		return nil, err
	}

	event.Target.Length = int64(len(p))
	event.Target.Size = int64(len(p))
	event.Target.Digest, err = digest.FromBytes(p)
	if err != nil {
		return nil, err
	}

	event.Target.URL, err = b.ub.BuildManifestURL(sm.Name, event.Target.Digest.String())
	if err != nil {
		return nil, err
	}

	return event, nil
}

// 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
}