| /* |
| 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 event |
| |
| 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" |
| apistorage "k8s.io/apiserver/pkg/storage" |
| "k8s.io/apiserver/pkg/storage/names" |
| "k8s.io/kubernetes/pkg/api/legacyscheme" |
| api "k8s.io/kubernetes/pkg/apis/core" |
| "k8s.io/kubernetes/pkg/apis/core/validation" |
| ) |
| |
| // eventStrategy implements verification logic for Pod Presets. |
| type eventStrategy struct { |
| runtime.ObjectTyper |
| names.NameGenerator |
| } |
| |
| // Strategy is the default logic that applies when creating and updating Pod Preset objects. |
| var Strategy = eventStrategy{legacyscheme.Scheme, names.SimpleNameGenerator} |
| |
| // NamespaceScoped returns true because all Events need to be within a namespace. |
| func (eventStrategy) NamespaceScoped() bool { |
| return true |
| } |
| |
| // PrepareForCreate clears the status of a Pod Preset before creation. |
| func (eventStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) { |
| } |
| |
| // PrepareForUpdate clears fields that are not allowed to be set by end users on update. |
| func (eventStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) { |
| } |
| |
| // Validate validates a new Event. |
| func (eventStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList { |
| event := obj.(*api.Event) |
| return validation.ValidateEvent(event) |
| } |
| |
| // Canonicalize normalizes the object after validation. |
| // AllowCreateOnUpdate is false for Event; this means POST is needed to create one. |
| func (eventStrategy) AllowCreateOnUpdate() bool { |
| return false |
| } |
| |
| func (eventStrategy) Canonicalize(obj runtime.Object) {} |
| |
| // ValidateUpdate is the default update validation for an end user. |
| func (eventStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList { |
| event := obj.(*api.Event) |
| return validation.ValidateEvent(event) |
| } |
| |
| // AllowUnconditionalUpdate is the default update policy for Event objects. |
| func (eventStrategy) AllowUnconditionalUpdate() bool { |
| return true |
| } |
| |
| // SelectableFields returns a field set that represents the object. |
| func SelectableFields(pip *api.Event) fields.Set { |
| return generic.ObjectMetaFieldsSet(&pip.ObjectMeta, true) |
| } |
| |
| // GetAttrs returns labels and fields of a given object for filtering purposes. |
| func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, bool, error) { |
| pip, ok := obj.(*api.Event) |
| if !ok { |
| return nil, nil, false, fmt.Errorf("given object is not a Event") |
| } |
| return labels.Set(pip.ObjectMeta.Labels), SelectableFields(pip), pip.Initializers != nil, nil |
| } |
| |
| // Matcher 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 Matcher(label labels.Selector, field fields.Selector) apistorage.SelectionPredicate { |
| return apistorage.SelectionPredicate{ |
| Label: label, |
| Field: field, |
| GetAttrs: GetAttrs, |
| } |
| } |