Function FetchHandler

core/remotes/handlers.go:118–135

FetchHandler returns a handler that will fetch all content into the ingester discovered in a call to Dispatch. Use with ChildrenHandler to do a full recursive fetch.

(ingester content.Ingester, fetcher Fetcher)

// discovered in a call to Dispatch. Use with ChildrenHandler to do a full
// recursive fetch.
func FetchHandler(ingester content.Ingester, fetcher Fetcher) images.HandlerFunc {
	return func(ctx context.Context, desc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
		ctx = log.WithLogger(ctx, log.G(ctx).WithFields(log.Fields{
			"digest":    desc.Digest,
			"mediatype": desc.MediaType,
			"size":      desc.Size,
		}))

		if desc.MediaType == images.MediaTypeDockerSchema1Manifest {
			return nil, fmt.Errorf("%v not supported", desc.MediaType)
		}
		err := Fetch(ctx, ingester, fetcher, desc)
		if errdefs.IsAlreadyExists(err) {
			return nil, nil
		}
		return nil, err
	}
}

// Fetch fetches the given digest into the provided ingester
func Fetch(ctx context.Context, ingester content.Ingester, fetcher Fetcher, desc ocispec.Descriptor) error {