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108 lines
3.8 KiB
Go
108 lines
3.8 KiB
Go
/*
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Copyright 2019 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 csidriver
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import (
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"context"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/apiserver/pkg/storage/names"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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"k8s.io/kubernetes/pkg/apis/storage"
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"k8s.io/kubernetes/pkg/apis/storage/validation"
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"k8s.io/kubernetes/pkg/features"
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)
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// csiDriverStrategy implements behavior for CSIDriver objects
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type csiDriverStrategy 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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// CSIDriver objects via the REST API.
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var Strategy = csiDriverStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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func (csiDriverStrategy) NamespaceScoped() bool {
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return false
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}
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// PrepareForCreate clears the fields for which the corresponding feature is disabled.
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func (csiDriverStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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csiDriver := obj.(*storage.CSIDriver)
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if !utilfeature.DefaultFeatureGate.Enabled(features.SELinuxMountReadWriteOncePod) {
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csiDriver.Spec.SELinuxMount = nil
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}
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}
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func (csiDriverStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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csiDriver := obj.(*storage.CSIDriver)
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return validation.ValidateCSIDriver(csiDriver)
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}
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// WarningsOnCreate returns warnings for the creation of the given object.
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func (csiDriverStrategy) WarningsOnCreate(ctx context.Context, obj runtime.Object) []string {
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return nil
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}
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// Canonicalize normalizes the object after validation.
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func (csiDriverStrategy) Canonicalize(obj runtime.Object) {
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}
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func (csiDriverStrategy) AllowCreateOnUpdate() bool {
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return false
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}
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// PrepareForUpdate clears the fields for which the corresponding feature is disabled and
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// existing object does not already have that field set. This allows the field to remain when
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// downgrading to a version that has the feature disabled.
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func (csiDriverStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newCSIDriver := obj.(*storage.CSIDriver)
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oldCSIDriver := old.(*storage.CSIDriver)
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if oldCSIDriver.Spec.SELinuxMount == nil &&
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!utilfeature.DefaultFeatureGate.Enabled(features.SELinuxMountReadWriteOncePod) {
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newCSIDriver.Spec.SELinuxMount = nil
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}
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// Any changes to the mutable fields increment the generation number.
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if !apiequality.Semantic.DeepEqual(oldCSIDriver.Spec.TokenRequests, newCSIDriver.Spec.TokenRequests) ||
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!apiequality.Semantic.DeepEqual(oldCSIDriver.Spec.RequiresRepublish, newCSIDriver.Spec.RequiresRepublish) ||
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!apiequality.Semantic.DeepEqual(oldCSIDriver.Spec.SELinuxMount, newCSIDriver.Spec.SELinuxMount) {
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newCSIDriver.Generation = oldCSIDriver.Generation + 1
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}
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}
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func (csiDriverStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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newCSIDriverObj := obj.(*storage.CSIDriver)
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oldCSIDriverObj := old.(*storage.CSIDriver)
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return validation.ValidateCSIDriverUpdate(newCSIDriverObj, oldCSIDriverObj)
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}
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// WarningsOnUpdate returns warnings for the given update.
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func (csiDriverStrategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
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return nil
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}
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func (csiDriverStrategy) AllowUnconditionalUpdate() bool {
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return false
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}
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