func (d *dockerImageDestination) PutManifest(m []byte) error {
// FIXME: This only allows upload by digest, not creating a tag. See the
// corresponding comment in openshift.NewImageDestination.
digest, err := manifest.Digest(m)
if err != nil {
return err
}
url := fmt.Sprintf(manifestURL, d.ref.RemoteName(), digest)
headers := map[string][]string{}
mimeType := manifest.GuessMIMEType(m)
if mimeType != "" {
headers["Content-Type"] = []string{mimeType}
}
res, err := d.c.makeRequest("PUT", url, headers, bytes.NewReader(m))
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode != http.StatusCreated {
body, err := ioutil.ReadAll(res.Body)
if err == nil {
logrus.Debugf("Error body %s", string(body))
}
logrus.Debugf("Error uploading manifest, status %d, %#v", res.StatusCode, res)
return fmt.Errorf("Error uploading manifest to %s, status %d", url, res.StatusCode)
}
return nil
}
func createManifest(m []byte) ([]byte, string, error) {
om := ociManifest{}
mt := manifest.GuessMIMEType(m)
switch mt {
case manifest.DockerV2Schema1MIMEType:
// There a simple reason about not yet implementing this.
// OCI image-spec assure about backward compatibility with docker v2s2 but not v2s1
// generating a v2s2 is a migration docker does when upgrading to 1.10.3
// and I don't think we should bother about this now (I don't want to have migration code here in skopeo)
return nil, "", fmt.Errorf("can't create OCI manifest from Docker V2 schema 1 manifest")
case manifest.DockerV2Schema2MIMEType:
if err := json.Unmarshal(m, &om); err != nil {
return nil, "", err
}
om.MediaType = manifest.OCIV1ImageManifestMIMEType
for i := range om.Layers {
om.Layers[i].MediaType = manifest.OCIV1ImageSerializationMIMEType
}
om.Config.MediaType = manifest.OCIV1ImageSerializationConfigMIMEType
b, err := json.Marshal(om)
if err != nil {
return nil, "", err
}
return b, om.MediaType, nil
case manifest.DockerV2ListMIMEType:
return nil, "", fmt.Errorf("can't create OCI manifest from Docker V2 schema 2 manifest list")
case manifest.OCIV1ImageManifestListMIMEType:
return nil, "", fmt.Errorf("can't create OCI manifest from OCI manifest list")
case manifest.OCIV1ImageManifestMIMEType:
return m, om.MediaType, nil
}
return nil, "", fmt.Errorf("Unrecognized manifest media type")
}
func (s *ociImageSource) GetTargetManifest(digest digest.Digest) ([]byte, string, error) {
manifestPath, err := s.ref.blobPath(digest)
if err != nil {
return nil, "", err
}
m, err := ioutil.ReadFile(manifestPath)
if err != nil {
return nil, "", err
}
return m, manifest.GuessMIMEType(m), nil
}
// Manifest is like ImageSource.GetManifest, but the result is cached; it is OK to call this however often you need.
// NOTE: It is essential for signature verification that Manifest returns the manifest from which BlobDigests is computed.
func (i *genericImage) Manifest() ([]byte, string, error) {
if i.cachedManifest == nil {
m, mt, err := i.src.GetManifest(i.requestedManifestMIMETypes)
if err != nil {
return nil, "", err
}
i.cachedManifest = m
if mt == "" {
mt = manifest.GuessMIMEType(i.cachedManifest)
}
i.cachedManifestMIMEType = mt
}
return i.cachedManifest, i.cachedManifestMIMEType, nil
}
// GetManifest returns the image's manifest along with its MIME type (which may be empty when it can't be determined but the manifest is available).
// It may use a remote (= slow) service.
func (s *ociImageSource) GetManifest() ([]byte, string, error) {
descriptorPath := s.ref.descriptorPath(s.ref.tag)
data, err := ioutil.ReadFile(descriptorPath)
if err != nil {
return nil, "", err
}
desc := imgspecv1.Descriptor{}
err = json.Unmarshal(data, &desc)
if err != nil {
return nil, "", err
}
manifestPath, err := s.ref.blobPath(digest.Digest(desc.Digest))
if err != nil {
return nil, "", err
}
m, err := ioutil.ReadFile(manifestPath)
if err != nil {
return nil, "", err
}
return m, manifest.GuessMIMEType(m), nil
}
func (s *storageImageSource) GetManifest() (manifestBlob []byte, MIMEType string, err error) {
manifestBlob, err = s.imageRef.transport.store.GetImageBigData(s.ID, "manifest")
return manifestBlob, manifest.GuessMIMEType(manifestBlob), err
}