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package libpod
import (
"encoding/json"
"strings"
digest "github.com/opencontainers/go-digest"
ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
"github.com/projectatomic/libpod/libpod/image"
"github.com/projectatomic/libpod/pkg/inspect"
)
// GetImageData returns an image's inspect data
func GetImageData(img *image.Image) (*inspect.ImageData, error) {
imgRef, err := img.ToImageRef()
if err != nil {
return nil, err
}
size, err := imgRef.Size()
if err != nil {
return nil, err
}
manifest, manifestType, err := imgRef.Manifest()
if err != nil {
return nil, errors.Wrapf(err, "error reading manifest for image %q", img.ID)
}
imgDigest := digest.Digest("")
if len(manifest) > 0 {
imgDigest = digest.Canonical.FromBytes(manifest)
}
annotations := annotations(manifest, manifestType)
ociv1Img, err := imgRef.OCIConfig()
if err != nil {
return nil, errors.Wrapf(err, "error getting oci image info %q", img.ID)
}
info, err := imgRef.Inspect()
if err != nil {
return nil, errors.Wrapf(err, "error getting image info %q", img.ID)
}
var repoDigests []string
for _, name := range img.Names() {
repoDigests = append(repoDigests, strings.SplitN(name, ":", 2)[0]+"@"+imgDigest.String())
}
driver, err := img.DriverData()
if err != nil {
return nil, err
}
data := &inspect.ImageData{
ID: img.ID(),
RepoTags: img.Names(),
RepoDigests: repoDigests,
Comment: ociv1Img.History[0].Comment,
Created: ociv1Img.Created,
Author: ociv1Img.Author,
Architecture: ociv1Img.Architecture,
Os: ociv1Img.OS,
ContainerConfig: &ociv1Img.Config,
Version: info.DockerVersion,
Size: size,
VirtualSize: size,
Annotations: annotations,
Digest: imgDigest,
Labels: info.Labels,
RootFS: &inspect.RootFS{
Type: ociv1Img.RootFS.Type,
Layers: ociv1Img.RootFS.DiffIDs,
},
GraphDriver: driver,
}
return data, nil
}
func annotations(manifest []byte, manifestType string) map[string]string {
annotations := make(map[string]string)
switch manifestType {
case ociv1.MediaTypeImageManifest:
var m ociv1.Manifest
if err := json.Unmarshal(manifest, &m); err == nil {
for k, v := range m.Annotations {
annotations[k] = v
}
}
}
return annotations
}
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