0f36c68244
As per discussion with @snmarterclayton. I implemented this for most types in the "obvious" way. I am not sure how to implement this for a couple types, though.
141 lines
4.8 KiB
Go
141 lines
4.8 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 namespace
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import (
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"fmt"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/validation"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/registry/generic"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util/fielderrors"
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)
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// namespaceStrategy implements behavior for Namespaces
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type namespaceStrategy struct {
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runtime.ObjectTyper
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api.NameGenerator
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}
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// Strategy is the default logic that applies when creating and updating Namespace
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// objects via the REST API.
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var Strategy = namespaceStrategy{api.Scheme, api.SimpleNameGenerator}
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// NamespaceScoped is false for namespaces.
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func (namespaceStrategy) NamespaceScoped() bool {
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return false
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}
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// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
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func (namespaceStrategy) PrepareForCreate(obj runtime.Object) {
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// on create, status is active
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namespace := obj.(*api.Namespace)
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namespace.Status = api.NamespaceStatus{
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Phase: api.NamespaceActive,
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}
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// on create, we require the kubernetes value
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// we cannot use this in defaults conversion because we let it get removed over life of object
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hasKubeFinalizer := false
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for i := range namespace.Spec.Finalizers {
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if namespace.Spec.Finalizers[i] == api.FinalizerKubernetes {
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hasKubeFinalizer = true
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break
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}
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}
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if !hasKubeFinalizer {
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if len(namespace.Spec.Finalizers) == 0 {
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namespace.Spec.Finalizers = []api.FinalizerName{api.FinalizerKubernetes}
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} else {
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namespace.Spec.Finalizers = append(namespace.Spec.Finalizers, api.FinalizerKubernetes)
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}
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}
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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 (namespaceStrategy) PrepareForUpdate(obj, old runtime.Object) {
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newNamespace := obj.(*api.Namespace)
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oldNamespace := old.(*api.Namespace)
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newNamespace.Spec.Finalizers = oldNamespace.Spec.Finalizers
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newNamespace.Status = oldNamespace.Status
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}
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// Validate validates a new namespace.
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func (namespaceStrategy) Validate(obj runtime.Object) fielderrors.ValidationErrorList {
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namespace := obj.(*api.Namespace)
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return validation.ValidateNamespace(namespace)
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}
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// AllowCreateOnUpdate is false for namespaces.
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func (namespaceStrategy) 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 (namespaceStrategy) ValidateUpdate(obj, old runtime.Object) fielderrors.ValidationErrorList {
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return validation.ValidateNamespaceUpdate(obj.(*api.Namespace), old.(*api.Namespace))
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}
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type namespaceStatusStrategy struct {
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namespaceStrategy
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}
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var StatusStrategy = namespaceStatusStrategy{Strategy}
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func (namespaceStatusStrategy) PrepareForUpdate(obj, old runtime.Object) {
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newNamespace := obj.(*api.Namespace)
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oldNamespace := old.(*api.Namespace)
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newNamespace.Spec = oldNamespace.Spec
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}
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func (namespaceStatusStrategy) ValidateUpdate(obj, old runtime.Object) fielderrors.ValidationErrorList {
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return validation.ValidateNamespaceStatusUpdate(obj.(*api.Namespace), old.(*api.Namespace))
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}
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type namespaceFinalizeStrategy struct {
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namespaceStrategy
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}
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var FinalizeStrategy = namespaceFinalizeStrategy{Strategy}
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func (namespaceFinalizeStrategy) ValidateUpdate(obj, old runtime.Object) fielderrors.ValidationErrorList {
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return validation.ValidateNamespaceFinalizeUpdate(obj.(*api.Namespace), old.(*api.Namespace))
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}
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// MatchNamespace returns a generic matcher for a given label and field selector.
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func MatchNamespace(label labels.Selector, field fields.Selector) generic.Matcher {
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return generic.MatcherFunc(func(obj runtime.Object) (bool, error) {
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namespaceObj, ok := obj.(*api.Namespace)
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if !ok {
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return false, fmt.Errorf("not a namespace")
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}
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fields := NamespaceToSelectableFields(namespaceObj)
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return label.Matches(labels.Set(namespaceObj.Labels)) && field.Matches(fields), nil
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})
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}
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// NamespaceToSelectableFields returns a label set that represents the object
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// TODO: fields are not labels, and the validation rules for them do not apply.
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func NamespaceToSelectableFields(namespace *api.Namespace) labels.Set {
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return labels.Set{
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"name": namespace.Name,
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"status.phase": string(namespace.Status.Phase),
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}
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}
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