func serviceIPs()

in gke-deploy/core/resource/resource.go [484:534]
46 lines of code
16 McCabe index (conditional complexity)

func serviceIPs(obj *Object) (string, error) {
	ports, ok, err := unstructured.NestedSlice(obj.Object, "spec", "ports")
	if err != nil {
		return "", fmt.Errorf("failed to get spec.ports field: %v", err)
	}
	if !ok || len(ports) == 0 {
		return "", nil
	}
	portMap := ports[0].(map[string]interface{})
	if !ok {
		return "", fmt.Errorf("failed to convert port to map")
	}
	port, ok, err := unstructured.NestedInt64(portMap, "port")
	if err != nil {
		return "", fmt.Errorf("failed to get port field: %v", err)
	}
	if !ok {
		return "", fmt.Errorf("port field is missing")
	}

	ingress, ok, err := unstructured.NestedSlice(obj.Object, "status", "loadBalancer", "ingress")
	if err != nil {
		return "", fmt.Errorf("failed to get status.loadBalancer.ingress field: %v", err)
	}
	if !ok || len(ingress) == 0 {
		return "", nil
	}

	var ips []string
	for _, i := range ingress {
		iMap, ok := i.(map[string]interface{})
		if !ok {
			return "", fmt.Errorf("failed to convert ingress to map")
		}
		ip, ok, err := unstructured.NestedString(iMap, "ip")
		if err != nil {
			return "", fmt.Errorf("failed to get ip field: %v", err)
		}
		if !ok || ip == "" {
			return "", fmt.Errorf("ip field is missing or is empty")
		}

		if port != 80 {
			ip = fmt.Sprintf("%s:%d", ip, port)
		}

		ips = append(ips, fmt.Sprintf("http://%s", ip))
	}

	return strings.Join(ips, ", "), nil
}