50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package registries
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import (
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"encoding/json"
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"fmt"
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"github.com/docker/distribution/manifest/schema2"
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log "k8s.io/klog"
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"net/http"
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)
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// Digest returns the digest for an image.
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func (r *Registry) ImageBlob(image Image, token string) (*ImageBlob, error) {
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if image.Path == "" {
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return nil, fmt.Errorf("image is required")
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}
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url := r.GetBlobUrl(image)
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Add("Accept", schema2.MediaTypeManifest)
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if token != "" {
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req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
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}
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resp, err := r.Client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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respBody, _ := GetRespBody(resp)
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if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusNotFound {
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log.Error("got response: " + string(resp.StatusCode) + string(respBody))
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return nil, fmt.Errorf("got image blob faild")
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}
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imageBlob := &ImageBlob{}
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err = json.Unmarshal(respBody, imageBlob)
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return imageBlob, err
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}
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func (r *Registry) GetBlobUrl(image Image) string {
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url := r.url("/v2/%s/blobs/%s", image.Path, image.Digest)
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return url
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}
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