Golang labels.Everything函数代码示例

// GetDeploymentsForPods returns a list of deployments managing a pod. Returns an error only if no matching deployments are found.
func (s *StoreToDeploymentLister) GetDeploymentsForPod(pod *api.Pod) (deployments []extensions.Deployment, err error) {
	if len(pod.Labels) == 0 {
		err = fmt.Errorf("no deployments found for Pod %v because it has no labels", pod.Name)
		return
	}

	if len(pod.Labels[extensions.DefaultDeploymentUniqueLabelKey]) == 0 {
		return
	}

	dList, err := s.Deployments(pod.Namespace).List(labels.Everything())
	if err != nil {
		return
	}
	for _, d := range dList {
		selector, err := unversioned.LabelSelectorAsSelector(d.Spec.Selector)
		if err != nil {
			return nil, fmt.Errorf("invalid label selector: %v", err)
		}
		// If a deployment with a nil or empty selector creeps in, it should match nothing, not everything.
		if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
			continue
		}
		deployments = append(deployments, d)
	}
	if len(deployments) == 0 {
		err = fmt.Errorf("could not find deployments set for Pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
	}
	return
}

// GetDeploymentsForReplicaSet returns a list of deployments managing a replica set. Returns an error only if no matching deployments are found.
func (s *StoreToDeploymentLister) GetDeploymentsForReplicaSet(rs *extensions.ReplicaSet) (deployments []extensions.Deployment, err error) {
	if len(rs.Labels) == 0 {
		err = fmt.Errorf("no deployments found for ReplicaSet %v because it has no labels", rs.Name)
		return
	}

	// TODO: MODIFY THIS METHOD so that it checks for the podTemplateSpecHash label
	dList, err := s.Deployments(rs.Namespace).List(labels.Everything())
	if err != nil {
		return
	}
	for _, d := range dList {
		selector, err := unversioned.LabelSelectorAsSelector(d.Spec.Selector)
		if err != nil {
			return nil, fmt.Errorf("invalid label selector: %v", err)
		}
		// If a deployment with a nil or empty selector creeps in, it should match nothing, not everything.
		if selector.Empty() || !selector.Matches(labels.Set(rs.Labels)) {
			continue
		}
		deployments = append(deployments, d)
	}
	if len(deployments) == 0 {
		err = fmt.Errorf("could not find deployments set for ReplicaSet %s in namespace %s with labels: %v", rs.Name, rs.Namespace, rs.Labels)
	}
	return
}

func addDefaultingFuncs(scheme *runtime.Scheme) error {
	return scheme.AddDefaultingFuncs(
		func(obj *ListOptions) {
			if obj.LabelSelector == nil {
				obj.LabelSelector = labels.Everything()
			}
			if obj.FieldSelector == nil {
				obj.FieldSelector = fields.Everything()
			}
		},
	)
}

func init() {
	Scheme.AddDefaultingFuncs(
		func(obj *ListOptions) {
			if obj.LabelSelector == nil {
				obj.LabelSelector = labels.Everything()
			}
			if obj.FieldSelector == nil {
				obj.FieldSelector = fields.Everything()
			}
		},
	)
	Scheme.AddConversionFuncs(
		Convert_unversioned_TypeMeta_To_unversioned_TypeMeta,

		Convert_unversioned_ListMeta_To_unversioned_ListMeta,

		Convert_intstr_IntOrString_To_intstr_IntOrString,

		Convert_unversioned_Time_To_unversioned_Time,

		Convert_Slice_string_To_unversioned_Time,

		Convert_resource_Quantity_To_resource_Quantity,

		Convert_string_To_labels_Selector,
		Convert_labels_Selector_To_string,

		Convert_string_To_fields_Selector,
		Convert_fields_Selector_To_string,

		Convert_Pointer_bool_To_bool,
		Convert_bool_To_Pointer_bool,

		Convert_Pointer_string_To_string,
		Convert_string_To_Pointer_string,

		Convert_Pointer_int64_To_int,
		Convert_int_To_Pointer_int64,

		Convert_Pointer_int32_To_int32,
		Convert_int32_To_Pointer_int32,

		Convert_Pointer_float64_To_float64,
		Convert_float64_To_Pointer_float64,

		Convert_map_to_unversioned_LabelSelector,
		Convert_unversioned_LabelSelector_to_map,
	)
}

func NewRootListAction(resource unversioned.GroupVersionResource, opts api.ListOptions) ListActionImpl {
	action := ListActionImpl{}
	action.Verb = "list"
	action.Resource = resource
	labelSelector := opts.LabelSelector
	if labelSelector == nil {
		labelSelector = labels.Everything()
	}
	fieldSelector := opts.FieldSelector
	if fieldSelector == nil {
		fieldSelector = fields.Everything()
	}
	action.ListRestrictions = ListRestrictions{labelSelector, fieldSelector}

	return action
}

func NewRootWatchAction(resource unversioned.GroupVersionResource, opts api.ListOptions) WatchActionImpl {
	action := WatchActionImpl{}
	action.Verb = "watch"
	action.Resource = resource
	labelSelector := opts.LabelSelector
	if labelSelector == nil {
		labelSelector = labels.Everything()
	}
	fieldSelector := opts.FieldSelector
	if fieldSelector == nil {
		fieldSelector = fields.Everything()
	}
	action.WatchRestrictions = WatchRestrictions{labelSelector, fieldSelector, opts.ResourceVersion}

	return action
}

func NewDeleteCollectionAction(resource unversioned.GroupVersionResource, namespace string, opts api.ListOptions) DeleteCollectionActionImpl {
	action := DeleteCollectionActionImpl{}
	action.Verb = "delete-collection"
	action.Resource = resource
	action.Namespace = namespace
	labelSelector := opts.LabelSelector
	if labelSelector == nil {
		labelSelector = labels.Everything()
	}
	fieldSelector := opts.FieldSelector
	if fieldSelector == nil {
		fieldSelector = fields.Everything()
	}
	action.ListRestrictions = ListRestrictions{labelSelector, fieldSelector}

	return action
}

func (c *FakeThirdPartyResources) List(opts api.ListOptions) (result *v1beta1.ThirdPartyResourceList, err error) {
	obj, err := c.Fake.
		Invokes(testing.NewRootListAction(thirdpartyresourcesResource, opts), &v1beta1.ThirdPartyResourceList{})
	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1beta1.ThirdPartyResourceList{}
	for _, item := range obj.(*v1beta1.ThirdPartyResourceList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeCertificateSigningRequests) List(opts api.ListOptions) (result *v1alpha1.CertificateSigningRequestList, err error) {
	obj, err := c.Fake.
		Invokes(testing.NewRootListAction(certificatesigningrequestsResource, opts), &v1alpha1.CertificateSigningRequestList{})
	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1alpha1.CertificateSigningRequestList{}
	for _, item := range obj.(*v1alpha1.CertificateSigningRequestList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeHorizontalPodAutoscalers) List(opts api.ListOptions) (result *v1beta1.HorizontalPodAutoscalerList, err error) {
	obj, err := c.Fake.
		Invokes(testing.NewListAction(horizontalpodautoscalersResource, c.ns, opts), &v1beta1.HorizontalPodAutoscalerList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1beta1.HorizontalPodAutoscalerList{}
	for _, item := range obj.(*v1beta1.HorizontalPodAutoscalerList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeConfigMaps) List(opts api.ListOptions) (result *v1.ConfigMapList, err error) {
	obj, err := c.Fake.
		Invokes(testing.NewListAction(configmapsResource, c.ns, opts), &v1.ConfigMapList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1.ConfigMapList{}
	for _, item := range obj.(*v1.ConfigMapList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

// LabelSelectorAsSelector converts the LabelSelector api type into a struct that implements
// labels.Selector
// Note: This function should be kept in sync with the selector methods in pkg/labels/selector.go
func LabelSelectorAsSelector(ps *LabelSelector) (labels.Selector, error) {
	if ps == nil {
		return labels.Nothing(), nil
	}
	if len(ps.MatchLabels)+len(ps.MatchExpressions) == 0 {
		return labels.Everything(), nil
	}
	selector := labels.NewSelector()
	for k, v := range ps.MatchLabels {
		r, err := labels.NewRequirement(k, labels.EqualsOperator, sets.NewString(v))
		if err != nil {
			return nil, err
		}
		selector = selector.Add(*r)
	}
	for _, expr := range ps.MatchExpressions {
		var op labels.Operator
		switch expr.Operator {
		case LabelSelectorOpIn:
			op = labels.InOperator
		case LabelSelectorOpNotIn:
			op = labels.NotInOperator
		case LabelSelectorOpExists:
			op = labels.ExistsOperator
		case LabelSelectorOpDoesNotExist:
			op = labels.DoesNotExistOperator
		default:
			return nil, fmt.Errorf("%q is not a valid pod selector operator", expr.Operator)
		}
		r, err := labels.NewRequirement(expr.Key, op, sets.NewString(expr.Values...))
		if err != nil {
			return nil, err
		}
		selector = selector.Add(*r)
	}
	return selector, nil
}