Function newLookupFunction

pkg/engine/lookup_func.go:57–94

(clientProvider ClientProvider)

}

func newLookupFunction(clientProvider ClientProvider) lookupFunc {
	return func(apiversion string, kind string, namespace string, name string) (map[string]any, error) {
		var client dynamic.ResourceInterface
		c, namespaced, err := clientProvider.GetClientFor(apiversion, kind)
		if err != nil {
			return map[string]any{}, err
		}
		if namespaced && namespace != "" {
			client = c.Namespace(namespace)
		} else {
			client = c
		}
		if name != "" {
			// this will return a single object
			obj, err := client.Get(context.Background(), name, metav1.GetOptions{})
			if err != nil {
				if apierrors.IsNotFound(err) {
					// Just return an empty interface when the object was not found.
					// That way, users can use `if not (lookup ...)` in their templates.
					return map[string]any{}, nil
				}
				return map[string]any{}, err
			}
			return obj.UnstructuredContent(), nil
		}
		// this will return a list
		obj, err := client.List(context.Background(), metav1.ListOptions{})
		if err != nil {
			if apierrors.IsNotFound(err) {
				// Just return an empty interface when the object was not found.
				// That way, users can use `if not (lookup ...)` in their templates.
				return map[string]any{}, nil
			}
			return map[string]any{}, err
		}
		return obj.UnstructuredContent(), nil
	}
}

// getDynamicClientOnKind returns a dynamic client on an Unstructured type. This client can be further namespaced.
func getDynamicClientOnKind(apiversion string, kind string, config *rest.Config) (dynamic.NamespaceableResourceInterface, bool, error) {