resources

type DownloadResource struct {
	URL             string
	ArchiveFileName string
	Checksum        string
	Size            int64
	CachePath       string
}

type DownloadResult struct {
	// Error is nil if the download is successful otherwise
	// it contains the reason for the download failure
	Error error

	// AlreadyDownloaded is true if a cache file is found
	// and, consequently, the download has not been executed
	AlreadyDownloaded bool
}

type IndexResource struct {
	URL                          *url.URL
	SignatureURL                 *url.URL
	EnforceSignatureVerification bool
}