Function compileInstanceByLabels

src/go/plugin/framework/chartengine/compiler.go:345–366

(instances *charttpl.Instances)

}

func compileInstanceByLabels(instances *charttpl.Instances) ([]program.InstanceLabelSelector, error) {
	if instances == nil {
		return nil, nil
	}
	out := make([]program.InstanceLabelSelector, 0, len(instances.ByLabels))
	for _, token := range instances.ByLabels {
		t := strings.TrimSpace(token)
		switch {
		case t == "*":
			out = append(out, program.InstanceLabelSelector{IncludeAll: true})
		case strings.HasPrefix(t, "!"):
			key := strings.TrimSpace(strings.TrimPrefix(t, "!"))
			if key == "" {
				return nil, fmt.Errorf("exclude token must include label key")
			}
			out = append(out, program.InstanceLabelSelector{Exclude: true, Key: key})
		default:
			out = append(out, program.InstanceLabelSelector{Key: t})
		}
	}
	return out, nil
}

func metricKindsFromNames(names []string) []string {
	seen := make(map[string]struct{})