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e8381db778
* Update Kubernetes to v1.21.0 * Update to golang v1.16.2 * Update dependent modules to track with upstream * Switch to upstream flannel * Track changes to upstream cloud-controller-manager and FeatureGates Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
/*
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Copyright 2021 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 printers
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import (
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"io"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/runtime"
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)
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// OmitManagedFieldsPrinter wraps an existing printer and omits the managed fields from the object
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// before printing it.
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type OmitManagedFieldsPrinter struct {
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Delegate ResourcePrinter
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}
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var _ ResourcePrinter = (*OmitManagedFieldsPrinter)(nil)
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func omitManagedFields(o runtime.Object) runtime.Object {
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a, err := meta.Accessor(o)
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if err != nil {
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// The object is not a `metav1.Object`, ignore it.
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return o
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}
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a.SetManagedFields(nil)
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return o
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}
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// PrintObj copies the object and omits the managed fields from the copied object before printing it.
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func (p *OmitManagedFieldsPrinter) PrintObj(obj runtime.Object, w io.Writer) error {
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if obj == nil {
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return p.Delegate.PrintObj(obj, w)
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}
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if meta.IsListType(obj) {
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obj = obj.DeepCopyObject()
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_ = meta.EachListItem(obj, func(item runtime.Object) error {
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omitManagedFields(item)
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return nil
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})
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} else if _, err := meta.Accessor(obj); err == nil {
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obj = omitManagedFields(obj.DeepCopyObject())
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}
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return p.Delegate.PrintObj(obj, w)
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}
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