func validate()

in controllers/manager/staticgatewayconfiguration_controller.go [255:301]
41 lines of code
12 McCabe index (conditional complexity)

func validate(gwConfig *egressgatewayv1alpha1.StaticGatewayConfiguration) error {
	// need to validate either GatewayNodepoolName or GatewayVmssProfile is provided, but not both
	var allErrs field.ErrorList

	if gwConfig.Spec.GatewayNodepoolName == "" && vmssProfileIsEmpty(gwConfig) {
		allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("gatewaynodepoolname"),
			fmt.Sprintf("GatewayNodepoolName: %s, GatewayVmssProfile: %#v", gwConfig.Spec.GatewayNodepoolName, gwConfig.Spec.GatewayVmssProfile),
			"Either GatewayNodepoolName or GatewayVmssProfile must be provided"))
	}

	if gwConfig.Spec.GatewayNodepoolName != "" && !vmssProfileIsEmpty(gwConfig) {
		allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("gatewaynodepoolname"),
			fmt.Sprintf("GatewayNodepoolName: %s, GatewayVmssProfile: %#v", gwConfig.Spec.GatewayNodepoolName, gwConfig.Spec.GatewayVmssProfile),
			"Only one of GatewayNodepoolName and GatewayVmssProfile should be provided"))
	}

	if !vmssProfileIsEmpty(gwConfig) {
		if gwConfig.Spec.GatewayVmssProfile.VmssResourceGroup == "" {
			allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("gatewayvmssprofile").Child("vmssresourcegroup"),
				gwConfig.Spec.GatewayVmssProfile.VmssResourceGroup,
				"Gateway vmss resource group is empty"))
		}
		if gwConfig.Spec.GatewayVmssProfile.VmssName == "" {
			allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("gatewayvmssprofile").Child("vmssname"),
				gwConfig.Spec.GatewayVmssProfile.VmssName,
				"Gateway vmss name is empty"))
		}
		if gwConfig.Spec.GatewayVmssProfile.PublicIpPrefixSize < 0 || gwConfig.Spec.GatewayVmssProfile.PublicIpPrefixSize > 31 {
			allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("gatewayvmssprofile").Child("publicipprefixsize"),
				gwConfig.Spec.GatewayVmssProfile.PublicIpPrefixSize,
				"Gateway vmss public ip prefix size should be between 0 and 31 inclusively"))
		}
	}

	if !gwConfig.Spec.ProvisionPublicIps && gwConfig.Spec.PublicIpPrefixId != "" {
		allErrs = append(allErrs, field.Invalid(field.NewPath("spec").Child("publicipprefixid"),
			gwConfig.Spec.PublicIpPrefixId,
			"PublicIpPrefixId should be empty when ProvisionPublicIps is false"))
	}

	if len(allErrs) == 0 {
		return nil
	}
	return apierrors.NewInvalid(
		schema.GroupKind{Group: "egressgateway.kubernetes.azure.com", Kind: "StaticGatewayConfiguration"},
		gwConfig.Name, allErrs)
}