Function SignatureStorageBaseURL

docker/registries_d.go:66–77

SignatureStorageBaseURL reads configuration to find an appropriate lookaside storage URL for ref, for write access if “write”. the usage of the BaseURL is defined under docker/distribution registries—separate storage of docs/signature-protocols.md Warning: This function only exposes configuration in

(sys *types.SystemContext, ref types.ImageReference, write bool)

// Warning: This function only exposes configuration in registries.d;
// just because this function returns an URL does not mean that the URL will be used by c/image/docker (e.g. if the registry natively supports X-R-S-S).
func SignatureStorageBaseURL(sys *types.SystemContext, ref types.ImageReference, write bool) (*url.URL, error) {
	dr, ok := ref.(dockerReference)
	if !ok {
		return nil, errors.New("ref must be a dockerReference")
	}
	config, err := loadRegistryConfiguration(sys)
	if err != nil {
		return nil, err
	}

	return config.lookasideStorageBaseURL(dr, write)
}

// loadRegistryConfiguration returns a registryConfiguration appropriate for sys.
func loadRegistryConfiguration(sys *types.SystemContext) (*registryConfiguration, error) {