func()

in pkg/webhook/injection.go [66:99]

• 28 lines of code
• 10 McCabe index (conditional complexity)

func (si *SidecarInjector) supportsNativeSidecar() (bool, error) {
	if si.ServerVersion != nil && !si.ServerVersion.AtLeast(minimumSupportedVersion) {
		return false, nil
	}

	clusterNodes, err := si.NodeLister.List(labels.Everything())
	if err != nil {
		return false, fmt.Errorf("failed to get cluster nodes: %w", err)
	}

	supportsNativeSidecar := true
	for _, node := range clusterNodes {
		nodeVersion, err := version.ParseGeneric(node.Status.NodeInfo.KubeletVersion)
		if !nodeVersion.AtLeast(minimumSupportedVersion) || err != nil {
			if err != nil {
				klog.Errorf(`invalid node gke version: could not get node "%s" k8s release from version "%s": "%v"`, node.Name, nodeVersion, err)
			}
			supportsNativeSidecar = false

			break
		}
	}

	if len(clusterNodes) == 0 {
		// Rely on cluster version in the event there's no nodes to reference.
		if si.ServerVersion != nil {
			supportsNativeSidecar = si.ServerVersion.AtLeast(minimumSupportedVersion)
		} else {
			supportsNativeSidecar = false
		}
	}

	return supportsNativeSidecar, nil
}