Function LoadArchive

pkg/chart/loader/load.go:161–190

LoadArchive loads from a reader containing a compressed tar archive.

(in io.Reader)

// LoadArchive loads from a reader containing a compressed tar archive.
func LoadArchive(in io.Reader) (chart.Charter, error) {
	// Note: This function is for use by SDK users such as Flux.

	files, err := archive.LoadArchiveFiles(in)
	if err != nil {
		if errors.Is(err, gzip.ErrHeader) {
			return nil, fmt.Errorf("stream does not appear to be a valid chart file (details: %w)", err)
		}
		return nil, fmt.Errorf("unable to load chart archive: %w", err)
	}

	for _, f := range files {
		if f.Name == "Chart.yaml" {
			c := new(chartBase)
			if err := yaml.Unmarshal(f.Data, c); err != nil {
				return c, fmt.Errorf("cannot load Chart.yaml: %w", err)
			}
			switch c.APIVersion {
			case c2.APIVersionV1, c2.APIVersionV2, "":
				return c2load.LoadFiles(files)
			case c3.APIVersionV3:
				return c3load.LoadFiles(files)
			default:
				return nil, errors.New("unsupported chart version")
			}
		}
	}

	return nil, errors.New("unable to detect chart version, no Chart.yaml found")
}

// chartBase is used to detect the API Version for the chart to run it through the
// loader for that type.