35 lines
825 B
Go
35 lines
825 B
Go
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package registry
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import (
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"fmt"
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"net/http"
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"github.com/docker/distribution/manifest/schema2"
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)
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// Digest returns the digest for a repository and reference.
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func (r *Registry) Digest(repository, ref string) (string, error) {
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url := r.url("/v2/%s/manifests/%s", repository, ref)
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r.Logf("registry.manifests.get url=%s repository=%s ref=%s",
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url, repository, ref)
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return "", err
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}
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req.Header.Set("Accept", schema2.MediaTypeManifest)
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resp, err := r.Client.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusNotFound {
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return "", fmt.Errorf("Got status code: %d", resp.StatusCode)
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}
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digest := resp.Header.Get("Docker-Content-Digest")
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return digest, nil
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}
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