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status_strategy.go
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/
status_strategy.go
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/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package customresource
import (
"context"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation/field"
)
type statusStrategy struct {
customResourceStrategy
}
func NewStatusStrategy(strategy customResourceStrategy) statusStrategy {
return statusStrategy{strategy}
}
func (a statusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
// update is only allowed to set status
newCustomResourceObject := obj.(*unstructured.Unstructured)
newCustomResource := newCustomResourceObject.UnstructuredContent()
status, ok := newCustomResource["status"]
// copy old object into new object
oldCustomResourceObject := old.(*unstructured.Unstructured)
// overridding the resourceVersion in metadata is safe here, we have already checked that
// new object and old object have the same resourceVersion.
*newCustomResourceObject = *oldCustomResourceObject.DeepCopy()
// set status
newCustomResource = newCustomResourceObject.UnstructuredContent()
if ok {
newCustomResource["status"] = status
} else {
delete(newCustomResource, "status")
}
}
// ValidateUpdate is the default update validation for an end user updating status.
func (a statusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
return a.customResourceStrategy.validator.ValidateStatusUpdate(ctx, obj, old, a.scale)
}