mirror of https://github.com/k3s-io/k3s
75 lines
2.1 KiB
Go
75 lines
2.1 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 etcd
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import (
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"strconv"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/meta"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage"
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)
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// APIObjectVersioner implements versioning and extracting etcd node information
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// for objects that have an embedded ObjectMeta or ListMeta field.
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type APIObjectVersioner struct{}
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// UpdateObject implements Versioner
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func (a APIObjectVersioner) UpdateObject(obj runtime.Object, resourceVersion uint64) error {
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accessor, err := meta.Accessor(obj)
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if err != nil {
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return err
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}
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versionString := ""
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if resourceVersion != 0 {
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versionString = strconv.FormatUint(resourceVersion, 10)
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}
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accessor.SetResourceVersion(versionString)
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return nil
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}
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// UpdateList implements Versioner
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func (a APIObjectVersioner) UpdateList(obj runtime.Object, resourceVersion uint64) error {
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listMeta, err := api.ListMetaFor(obj)
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if err != nil || listMeta == nil {
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return err
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}
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versionString := ""
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if resourceVersion != 0 {
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versionString = strconv.FormatUint(resourceVersion, 10)
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}
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listMeta.ResourceVersion = versionString
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return nil
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}
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// ObjectResourceVersion implements Versioner
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func (a APIObjectVersioner) ObjectResourceVersion(obj runtime.Object) (uint64, error) {
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accessor, err := meta.Accessor(obj)
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if err != nil {
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return 0, err
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}
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version := accessor.GetResourceVersion()
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if len(version) == 0 {
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return 0, nil
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}
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return strconv.ParseUint(version, 10, 64)
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}
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// APIObjectVersioner implements Versioner
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var _ storage.Versioner = APIObjectVersioner{}
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