| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package flunder |
| |
| import ( |
| "context" |
| "fmt" |
| |
| "k8s.io/apimachinery/pkg/fields" |
| "k8s.io/apimachinery/pkg/labels" |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/util/validation/field" |
| "k8s.io/apiserver/pkg/registry/generic" |
| "k8s.io/apiserver/pkg/storage" |
| "k8s.io/apiserver/pkg/storage/names" |
| "k8s.io/sample-apiserver/pkg/apis/wardle/validation" |
| |
| "k8s.io/sample-apiserver/pkg/apis/wardle" |
| ) |
| |
| // NewStrategy creates and returns a flunderStrategy instance |
| func NewStrategy(typer runtime.ObjectTyper) flunderStrategy { |
| return flunderStrategy{typer, names.SimpleNameGenerator} |
| } |
| |
| // GetAttrs returns labels.Set, fields.Set, the presence of Initializers if any |
| // and error in case the given runtime.Object is not a Flunder |
| func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, bool, error) { |
| apiserver, ok := obj.(*wardle.Flunder) |
| if !ok { |
| return nil, nil, false, fmt.Errorf("given object is not a Flunder") |
| } |
| return labels.Set(apiserver.ObjectMeta.Labels), SelectableFields(apiserver), apiserver.Initializers != nil, nil |
| } |
| |
| // MatchFlunder is the filter used by the generic etcd backend to watch events |
| // from etcd to clients of the apiserver only interested in specific labels/fields. |
| func MatchFlunder(label labels.Selector, field fields.Selector) storage.SelectionPredicate { |
| return storage.SelectionPredicate{ |
| Label: label, |
| Field: field, |
| GetAttrs: GetAttrs, |
| } |
| } |
| |
| // SelectableFields returns a field set that represents the object. |
| func SelectableFields(obj *wardle.Flunder) fields.Set { |
| return generic.ObjectMetaFieldsSet(&obj.ObjectMeta, true) |
| } |
| |
| type flunderStrategy struct { |
| runtime.ObjectTyper |
| names.NameGenerator |
| } |
| |
| func (flunderStrategy) NamespaceScoped() bool { |
| return true |
| } |
| |
| func (flunderStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) { |
| } |
| |
| func (flunderStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) { |
| } |
| |
| func (flunderStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList { |
| flunder := obj.(*wardle.Flunder) |
| return validation.ValidateFlunder(flunder) |
| } |
| |
| func (flunderStrategy) AllowCreateOnUpdate() bool { |
| return false |
| } |
| |
| func (flunderStrategy) AllowUnconditionalUpdate() bool { |
| return false |
| } |
| |
| func (flunderStrategy) Canonicalize(obj runtime.Object) { |
| } |
| |
| func (flunderStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList { |
| return field.ErrorList{} |
| } |