func()

in controllers/node/node_controller.go [271:318]

• 32 lines of code
• 12 McCabe index (conditional complexity)

func (cnc *CloudNodeController) reconcileNodeLabels(nodeName string) error {
	node, err := cnc.nodeInformer.Lister().Get(nodeName)
	if err != nil {
		// If node not found, just ignore it.
		if apierrors.IsNotFound(err) {
			return nil
		}

		return err
	}

	if node.Labels == nil {
		// Nothing to reconcile.
		return nil
	}

	labelsToUpdate := map[string]string{}
	for _, r := range labelReconcileInfo {
		primaryValue, primaryExists := node.Labels[r.primaryKey]
		secondaryValue, secondaryExists := node.Labels[r.secondaryKey]

		if !primaryExists {
			// The primary label key does not exist. This should not happen
			// within our supported version skew range, when no external
			// components/factors modifying the node object. Ignore this case.
			continue
		}
		if secondaryExists && primaryValue != secondaryValue {
			// Secondary label exists, but not consistent with the primary
			// label. Need to reconcile.
			labelsToUpdate[r.secondaryKey] = primaryValue

		} else if !secondaryExists && r.ensureSecondaryExists {
			// Apply secondary label based on primary label.
			labelsToUpdate[r.secondaryKey] = primaryValue
		}
	}

	if len(labelsToUpdate) == 0 {
		return nil
	}

	if !cloudnodeutil.AddOrUpdateLabelsOnNode(cnc.kubeClient, labelsToUpdate, node) {
		return fmt.Errorf("failed update labels for node %+v", node)
	}

	return nil
}