// List obtains a list of Deployments that match selector.
func (s *storage) ListDeployments(ctx api.Context, label labels.Selector, field fields.Selector) (*experimental.DeploymentList, error) {
if !field.Empty() {
return nil, fmt.Errorf("field selector not supported yet")
}
obj, err := s.List(ctx, label, field)
if err != nil {
return nil, err
}
return obj.(*experimental.DeploymentList), err
}
func (s *storage) ListJobs(ctx api.Context, label labels.Selector, field fields.Selector) (*extensions.JobList, error) {
if !field.Empty() {
return nil, fmt.Errorf("field selector not supported yet")
}
obj, err := s.List(ctx, label, field)
if err != nil {
return nil, err
}
return obj.(*extensions.JobList), err
}
// List obtains a list of ReplicationControllers that match selector.
func (s *storage) ListControllers(ctx api.Context, label labels.Selector, field fields.Selector) (*api.ReplicationControllerList, error) {
if !field.Empty() {
return nil, fmt.Errorf("field selector not supported yet")
}
obj, err := s.List(ctx, label, field)
if err != nil {
return nil, err
}
return obj.(*api.ReplicationControllerList), err
}
// MatchPod returns a generic matcher for a given label and field selector.
func MatchPod(label labels.Selector, field fields.Selector) generic.Matcher {
return &generic.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
pod, ok := obj.(*api.Pod)
if !ok {
return nil, nil, fmt.Errorf("not a pod")
}
// podLabels is already sitting there ready to be used.
// podFields is not available directly and requires allocation of a map.
// Only bother if the fields might be useful to determining the match.
// One common case is for a replication controller to set up a watch
// based on labels alone; in that case we can avoid allocating the field map.
// This is especially important in the apiserver.
podLabels := labels.Set(pod.ObjectMeta.Labels)
var podFields fields.Set
if !field.Empty() && label.Matches(podLabels) {
podFields = PodToSelectableFields(pod)
}
return podLabels, podFields, nil
},
IndexFields: []string{"spec.nodeName"},
}
}
// FieldsSelectorParam adds the given selector as a query parameter with the name paramName.
func (r *Request) FieldsSelectorParam(s fields.Selector) *Request {
if r.err != nil {
return r
}
if s == nil {
return r
}
if s.Empty() {
return r
}
s2, err := s.Transform(func(field, value string) (newField, newValue string, err error) {
return fieldMappings.filterField(r.content.GroupVersion, r.resource, field, value)
})
if err != nil {
r.err = err
return r
}
return r.setParam(unversioned.FieldSelectorQueryParam(r.content.GroupVersion.String()), s2.String())
}
// WatchServices begins watching for new, changed, or deleted service configurations.
func (r *Registry) WatchServices(ctx api.Context, label labels.Selector, field fields.Selector, resourceVersion string) (watch.Interface, error) {
version, err := storage.ParseWatchResourceVersion(resourceVersion, "service")
if err != nil {
return nil, err
}
if !label.Empty() {
return nil, fmt.Errorf("label selectors are not supported on services")
}
if value, found := field.RequiresExactMatch("name"); found {
key, err := makeServiceKey(ctx, value)
if err != nil {
return nil, err
}
// TODO: use generic.SelectionPredicate
return r.Watch(key, version, storage.Everything)
}
if field.Empty() {
return r.WatchList(makeServiceListKey(ctx), version, storage.Everything)
}
return nil, fmt.Errorf("only the 'name' and default (everything) field selectors are supported")
}
// WatchRoutes begins watching for new, changed, or deleted route configurations.
func (registry *Etcd) WatchRoutes(ctx kapi.Context, label labels.Selector, field fields.Selector, resourceVersion string) (watch.Interface, error) {
if !label.Empty() {
return nil, fmt.Errorf("label selectors are not supported on routes yet")
}
version, err := storage.ParseWatchResourceVersion(resourceVersion, "pod")
if err != nil {
return nil, err
}
if value, found := field.RequiresExactMatch("ID"); found {
key, err := makeRouteKey(ctx, value)
if err != nil {
return nil, err
}
return registry.Watch(key, version, storage.Everything)
}
if field.Empty() {
key := kubeetcd.MakeEtcdListKey(ctx, RoutePath)
return registry.WatchList(key, version, storage.Everything)
}
return nil, fmt.Errorf("only the 'ID' and default (everything) field selectors are supported")
}
// MatchEndpoints returns a generic matcher for a given label and field selector.
func MatchEndpoints(label labels.Selector, field fields.Selector) pkgstorage.SelectionPredicate {
return pkgstorage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
endpoints, ok := obj.(*api.Endpoints)
if !ok {
return nil, nil, fmt.Errorf("invalid object type %#v", obj)
}
// Compute fields only if field selectors is non-empty
// (otherwise those won't be used).
// Those are generally also not needed if label selector does
// not match labels, but additional computation of it is expensive.
var endpointsFields fields.Set
if !field.Empty() {
endpointsFields = EndpointsToSelectableFields(endpoints)
}
return endpoints.Labels, endpointsFields, nil
},
}
}
// MatchNode returns a generic matcher for a given label and field selector.
func MatchNode(label labels.Selector, field fields.Selector) pkgstorage.SelectionPredicate {
return pkgstorage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
nodeObj, ok := obj.(*api.Node)
if !ok {
return nil, nil, fmt.Errorf("not a node")
}
// Compute fields only if field selectors is non-empty
// (otherwise those won't be used).
// Those are generally also not needed if label selector does
// not match labels, but additional computation of it is expensive.
var nodeFields fields.Set
if !field.Empty() {
nodeFields = NodeToSelectableFields(nodeObj)
}
return labels.Set(nodeObj.ObjectMeta.Labels), nodeFields, nil
},
IndexFields: []string{"metadata.name"},
}
}
// MatchPod returns a generic matcher for a given label and field selector.
func MatchPod(label labels.Selector, field fields.Selector) storage.SelectionPredicate {
return storage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
pod, ok := obj.(*api.Pod)
if !ok {
return nil, nil, fmt.Errorf("not a pod")
}
// Compute fields only if field selectors is non-empty
// (otherwise those won't be used).
// Those are generally also not needed if label selector does
// not match labels, but additional computation of it is expensive.
var podFields fields.Set
if !field.Empty() {
podFields = PodToSelectableFields(pod)
}
return labels.Set(pod.ObjectMeta.Labels), podFields, nil
},
IndexFields: []string{"spec.nodeName"},
}
}
// Watch begins watching for new, changed, or deleted images.
func (r *REST) Watch(ctx kapi.Context, label labels.Selector, field fields.Selector, resourceVersion string) (watch.Interface, error) {
if !field.Empty() {
return nil, errors.New("field selectors are not supported on images")
}
return r.store.WatchPredicate(ctx, image.MatchImage(label, field), resourceVersion)
}
