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134 lines
4.5 KiB
Go
134 lines
4.5 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package event
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import (
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"context"
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"fmt"
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"k8s.io/apimachinery/pkg/fields"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/validation/field"
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genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
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"k8s.io/apiserver/pkg/registry/generic"
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"k8s.io/apiserver/pkg/registry/rest"
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"k8s.io/apiserver/pkg/storage"
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"k8s.io/apiserver/pkg/storage/names"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/apis/core/validation"
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)
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type eventStrategy struct {
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runtime.ObjectTyper
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names.NameGenerator
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}
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// Strategy is the default logic that applies when creating and updating
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// Event objects via the REST API.
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var Strategy = eventStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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func (eventStrategy) DefaultGarbageCollectionPolicy(ctx context.Context) rest.GarbageCollectionPolicy {
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return rest.Unsupported
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}
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func (eventStrategy) NamespaceScoped() bool {
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return true
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}
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func (eventStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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}
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func (eventStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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}
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func (eventStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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groupVersion := requestGroupVersion(ctx)
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event := obj.(*api.Event)
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return validation.ValidateEventCreate(event, groupVersion)
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}
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// Canonicalize normalizes the object after validation.
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func (eventStrategy) Canonicalize(obj runtime.Object) {
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}
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func (eventStrategy) AllowCreateOnUpdate() bool {
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return true
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}
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func (eventStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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groupVersion := requestGroupVersion(ctx)
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event := obj.(*api.Event)
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oldEvent := obj.(*api.Event)
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return validation.ValidateEventUpdate(event, oldEvent, groupVersion)
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}
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func (eventStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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// GetAttrs returns labels and fields of a given object for filtering purposes.
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func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
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event, ok := obj.(*api.Event)
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if !ok {
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return nil, nil, fmt.Errorf("not an event")
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}
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return labels.Set(event.Labels), ToSelectableFields(event), nil
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}
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// Matcher returns a selection predicate for a given label and field selector.
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func Matcher(label labels.Selector, field fields.Selector) storage.SelectionPredicate {
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return storage.SelectionPredicate{
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Label: label,
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Field: field,
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GetAttrs: GetAttrs,
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}
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}
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// ToSelectableFields returns a field set that represents the object.
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func ToSelectableFields(event *api.Event) fields.Set {
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objectMetaFieldsSet := generic.ObjectMetaFieldsSet(&event.ObjectMeta, true)
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source := event.Source.Component
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if source == "" {
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source = event.ReportingController
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}
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specificFieldsSet := fields.Set{
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"involvedObject.kind": event.InvolvedObject.Kind,
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"involvedObject.namespace": event.InvolvedObject.Namespace,
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"involvedObject.name": event.InvolvedObject.Name,
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"involvedObject.uid": string(event.InvolvedObject.UID),
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"involvedObject.apiVersion": event.InvolvedObject.APIVersion,
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"involvedObject.resourceVersion": event.InvolvedObject.ResourceVersion,
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"involvedObject.fieldPath": event.InvolvedObject.FieldPath,
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"reason": event.Reason,
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"reportingComponent": event.ReportingController, // use the core/v1 field name
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"source": source,
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"type": event.Type,
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}
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return generic.MergeFieldsSets(objectMetaFieldsSet, specificFieldsSet)
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}
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// requestGroupVersion returns the group/version associated with the given context, or a zero-value group/version.
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func requestGroupVersion(ctx context.Context) schema.GroupVersion {
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if requestInfo, found := genericapirequest.RequestInfoFrom(ctx); found {
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return schema.GroupVersion{Group: requestInfo.APIGroup, Version: requestInfo.APIVersion}
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}
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return schema.GroupVersion{}
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}
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