mirror of https://github.com/k3s-io/k3s
140 lines
4.2 KiB
Go
140 lines
4.2 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors 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 service
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import (
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"fmt"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/validation"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/util/validation/field"
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)
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// svcStrategy implements behavior for Services
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type svcStrategy struct {
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runtime.ObjectTyper
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api.NameGenerator
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}
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// Services is the default logic that applies when creating and updating Service
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// objects.
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var Strategy = svcStrategy{api.Scheme, api.SimpleNameGenerator}
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// NamespaceScoped is true for services.
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func (svcStrategy) NamespaceScoped() bool {
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return true
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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 (svcStrategy) PrepareForCreate(obj runtime.Object) {
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service := obj.(*api.Service)
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service.Status = api.ServiceStatus{}
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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 (svcStrategy) PrepareForUpdate(obj, old runtime.Object) {
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newService := obj.(*api.Service)
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oldService := old.(*api.Service)
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newService.Status = oldService.Status
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}
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// Validate validates a new service.
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func (svcStrategy) Validate(ctx api.Context, obj runtime.Object) field.ErrorList {
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service := obj.(*api.Service)
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return validation.ValidateService(service)
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}
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// Canonicalize normalizes the object after validation.
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func (svcStrategy) Canonicalize(obj runtime.Object) {
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}
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func (svcStrategy) AllowCreateOnUpdate() bool {
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return true
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}
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func (svcStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateServiceUpdate(obj.(*api.Service), old.(*api.Service))
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}
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func (svcStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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func (svcStrategy) Export(obj runtime.Object, exact bool) error {
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t, ok := obj.(*api.Service)
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if !ok {
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// unexpected programmer error
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return fmt.Errorf("unexpected object: %v", obj)
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}
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// TODO: service does not yet have a prepare create strategy (see above)
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t.Status = api.ServiceStatus{}
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if exact {
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return nil
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}
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if t.Spec.ClusterIP != api.ClusterIPNone {
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t.Spec.ClusterIP = "<unknown>"
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}
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if t.Spec.Type == api.ServiceTypeNodePort {
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for i := range t.Spec.Ports {
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t.Spec.Ports[i].NodePort = 0
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}
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}
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return nil
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}
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func MatchServices(label labels.Selector, field fields.Selector) generic.Matcher {
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return &generic.SelectionPredicate{
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Label: label,
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Field: field,
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GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
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service, ok := obj.(*api.Service)
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if !ok {
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return nil, nil, fmt.Errorf("Given object is not a service")
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}
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return labels.Set(service.ObjectMeta.Labels), ServiceToSelectableFields(service), nil
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},
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}
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}
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func ServiceToSelectableFields(service *api.Service) fields.Set {
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return generic.ObjectMetaFieldsSet(service.ObjectMeta, true)
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}
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type serviceStatusStrategy struct {
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svcStrategy
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}
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// StatusStrategy is the default logic invoked when updating service status.
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var StatusStrategy = serviceStatusStrategy{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 (serviceStatusStrategy) PrepareForUpdate(obj, old runtime.Object) {
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newService := obj.(*api.Service)
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oldService := old.(*api.Service)
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// status changes are not allowed to update spec
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newService.Spec = oldService.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 (serviceStatusStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateServiceStatusUpdate(obj.(*api.Service), old.(*api.Service))
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}
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