56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package registries
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/http"
|
|
|
|
"github.com/docker/distribution/manifest/schema2"
|
|
"github.com/emicklei/go-restful"
|
|
log "k8s.io/klog"
|
|
)
|
|
|
|
var statusUnauthorized = "Not found or unauthorized"
|
|
|
|
// Digest returns the digest for an image.
|
|
func (r *Registry) ImageManifest(image Image, token string) (*ImageManifest, error) {
|
|
url := r.GetDigestUrl(image)
|
|
|
|
req, err := http.NewRequest("GET", url, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
req.Header.Add("Accept", schema2.MediaTypeManifest)
|
|
if token != "" {
|
|
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
|
|
}
|
|
|
|
resp, err := r.Client.Do(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
respBody, _ := GetRespBody(resp)
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
if resp.StatusCode == http.StatusNotFound || resp.StatusCode == http.StatusUnauthorized {
|
|
log.Error(statusUnauthorized)
|
|
return nil, restful.NewError(resp.StatusCode, statusUnauthorized)
|
|
}
|
|
log.Error("got response: " + string(resp.StatusCode) + string(respBody))
|
|
return nil, restful.NewError(resp.StatusCode, "got image manifest failed")
|
|
}
|
|
|
|
imageManifest := &ImageManifest{}
|
|
err = json.Unmarshal(respBody, imageManifest)
|
|
|
|
return imageManifest, err
|
|
}
|
|
|
|
func (r *Registry) GetDigestUrl(image Image) string {
|
|
url := r.url("/v2/%s/manifests/%s", image.Path, image.Tag)
|
|
return url
|
|
}
|