Golang labels.Everything函数代码示例

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_string_To_labels_Selector,
		Convert_string_To_fields_Selector,
		Convert_bool_ref_To_bool,
		Convert_bool_To_bool_ref,
		Convert_string_ref_To_string,
		Convert_string_To_string_ref,
		Convert_labels_Selector_To_string,
		Convert_fields_Selector_To_string,
		Convert_resource_Quantity_To_resource_Quantity,
	)
}

func TestLabelSelectorAsSelector(t *testing.T) {
	matchLabels := map[string]string{"foo": "bar"}
	matchExpressions := []LabelSelectorRequirement{{
		Key:      "baz",
		Operator: LabelSelectorOpIn,
		Values:   []string{"qux", "norf"},
	}}
	mustParse := func(s string) labels.Selector {
		out, e := labels.Parse(s)
		if e != nil {
			panic(e)
		}
		return out
	}
	tc := []struct {
		in        *LabelSelector
		out       labels.Selector
		expectErr bool
	}{
		{in: nil, out: labels.Nothing()},
		{in: &LabelSelector{}, out: labels.Everything()},
		{
			in:  &LabelSelector{MatchLabels: matchLabels},
			out: mustParse("foo in (bar)"),
		},
		{
			in:  &LabelSelector{MatchExpressions: matchExpressions},
			out: mustParse("baz in (norf,qux)"),
		},
		{
			in:  &LabelSelector{MatchLabels: matchLabels, MatchExpressions: matchExpressions},
			out: mustParse("foo in (bar),baz in (norf,qux)"),
		},
		{
			in: &LabelSelector{
				MatchExpressions: []LabelSelectorRequirement{{
					Key:      "baz",
					Operator: LabelSelectorOpExists,
					Values:   []string{"qux", "norf"},
				}},
			},
			expectErr: true,
		},
	}

	for i, tc := range tc {
		out, err := LabelSelectorAsSelector(tc.in)
		if err == nil && tc.expectErr {
			t.Errorf("[%v]expected error but got none.", i)
		}
		if err != nil && !tc.expectErr {
			t.Errorf("[%v]did not expect error but got: %v", i, err)
		}
		if !reflect.DeepEqual(out, tc.out) {
			t.Errorf("[%v]expected:\n\t%+v\nbut got:\n\t%+v", i, tc.out, out)
		}
	}
}

func NewRootListAction(resource string, 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 string, 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 (c *FakeDeployments) List(opts api.ListOptions) (*extensions.DeploymentList, error) {
	obj, err := c.Fake.Invokes(NewListAction("deployments", c.Namespace, opts), &extensions.DeploymentList{})
	if obj == nil {
		return nil, err
	}
	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &extensions.DeploymentList{}
	for _, deployment := range obj.(*extensions.DeploymentList).Items {
		if label.Matches(labels.Set(deployment.Labels)) {
			list.Items = append(list.Items, deployment)
		}
	}
	return list, err
}

func (c *FakePods) List(opts api.ListOptions) (*api.PodList, error) {
	obj, err := c.Fake.Invokes(NewListAction("pods", c.Namespace, opts), &api.PodList{})
	if obj == nil {
		return nil, err
	}
	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &api.PodList{}
	for _, pod := range obj.(*api.PodList).Items {
		if label.Matches(labels.Set(pod.Labels)) {
			list.Items = append(list.Items, pod)
		}
	}
	return list, err
}

func NewDeleteCollectionAction(resource, 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 *FakeHorizontalPodAutoscalers) List(opts api.ListOptions) (*extensions.HorizontalPodAutoscalerList, error) {
	obj, err := c.Fake.Invokes(NewListAction("horizontalpodautoscalers", c.Namespace, opts), &extensions.HorizontalPodAutoscalerList{})
	if obj == nil {
		return nil, err
	}
	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &extensions.HorizontalPodAutoscalerList{}
	for _, a := range obj.(*extensions.HorizontalPodAutoscalerList).Items {
		if label.Matches(labels.Set(a.Labels)) {
			list.Items = append(list.Items, a)
		}
	}
	return list, err
}

func (c *FakePersistentVolumes) List(opts api.ListOptions) (result *api.PersistentVolumeList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewRootListAction("persistentvolumes", opts), &api.PersistentVolumeList{})
	if obj == nil {
		return nil, err
	}

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

func (c *FakeThirdPartyResources) List(opts api.ListOptions) (result *extensions.ThirdPartyResourceList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewListAction("thirdpartyresources", c.ns, opts), &extensions.ThirdPartyResourceList{})

	if obj == nil {
		return nil, err
	}

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

func (c *FakeServiceAccounts) List(opts api.ListOptions) (result *api.ServiceAccountList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewListAction("serviceaccounts", c.ns, opts), &api.ServiceAccountList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &api.ServiceAccountList{}
	for _, item := range obj.(*api.ServiceAccountList).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
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.InOperator, 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
}