145 lines
5.2 KiB
Go
145 lines
5.2 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 ingress
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import (
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"fmt"
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"reflect"
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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/util/validation/field"
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genericapirequest "k8s.io/apiserver/pkg/request"
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"k8s.io/apiserver/pkg/storage/names"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/apis/extensions/validation"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/storage"
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)
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// ingressStrategy implements verification logic for Replication Ingresss.
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type ingressStrategy 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 Replication Ingress objects.
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var Strategy = ingressStrategy{api.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped returns true because all Ingress' need to be within a namespace.
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func (ingressStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears the status of an Ingress before creation.
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func (ingressStrategy) PrepareForCreate(ctx genericapirequest.Context, obj runtime.Object) {
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ingress := obj.(*extensions.Ingress)
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// create cannot set status
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ingress.Status = extensions.IngressStatus{}
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ingress.Generation = 1
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}
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// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
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func (ingressStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
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newIngress := obj.(*extensions.Ingress)
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oldIngress := old.(*extensions.Ingress)
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// Update is not allowed to set status
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newIngress.Status = oldIngress.Status
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// Any changes to the spec increment the generation number, any changes to the
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// status should reflect the generation number of the corresponding object.
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// See api.ObjectMeta description for more information on Generation.
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if !reflect.DeepEqual(oldIngress.Spec, newIngress.Spec) {
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newIngress.Generation = oldIngress.Generation + 1
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}
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}
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// Validate validates a new Ingress.
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func (ingressStrategy) Validate(ctx genericapirequest.Context, obj runtime.Object) field.ErrorList {
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ingress := obj.(*extensions.Ingress)
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err := validation.ValidateIngress(ingress)
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return err
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}
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// Canonicalize normalizes the object after validation.
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func (ingressStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for Ingress; this means POST is needed to create one.
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func (ingressStrategy) AllowCreateOnUpdate() bool {
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return false
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}
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// ValidateUpdate is the default update validation for an end user.
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func (ingressStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
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validationErrorList := validation.ValidateIngress(obj.(*extensions.Ingress))
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updateErrorList := validation.ValidateIngressUpdate(obj.(*extensions.Ingress), old.(*extensions.Ingress))
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return append(validationErrorList, updateErrorList...)
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}
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// AllowUnconditionalUpdate is the default update policy for Ingress objects.
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func (ingressStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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// IngressToSelectableFields returns a field set that represents the object.
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func IngressToSelectableFields(ingress *extensions.Ingress) fields.Set {
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return generic.ObjectMetaFieldsSet(&ingress.ObjectMeta, 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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ingress, ok := obj.(*extensions.Ingress)
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if !ok {
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return nil, nil, fmt.Errorf("Given object is not an Ingress.")
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}
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return labels.Set(ingress.ObjectMeta.Labels), IngressToSelectableFields(ingress), nil
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}
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// MatchIngress is the filter used by the generic etcd backend to ingress
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// watch events from etcd to clients of the apiserver only interested in specific
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// labels/fields.
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func MatchIngress(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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type ingressStatusStrategy struct {
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ingressStrategy
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}
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var StatusStrategy = ingressStatusStrategy{Strategy}
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// PrepareForUpdate clears fields that are not allowed to be set by end users on update of status
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func (ingressStatusStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
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newIngress := obj.(*extensions.Ingress)
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oldIngress := old.(*extensions.Ingress)
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// status changes are not allowed to update spec
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newIngress.Spec = oldIngress.Spec
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}
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// ValidateUpdate is the default update validation for an end user updating status
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func (ingressStatusStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateIngressStatusUpdate(obj.(*extensions.Ingress), old.(*extensions.Ingress))
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}
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