mirror of https://github.com/k3s-io/k3s
84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
/*
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Copyright 2015 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 podutil
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import (
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"bytes"
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"compress/gzip"
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"fmt"
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"io/ioutil"
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"k8s.io/kubernetes/pkg/api"
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_ "k8s.io/kubernetes/pkg/api/install"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/runtime"
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)
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func Gzip(pods <-chan *api.Pod) ([]byte, error) {
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return gzipList(List(pods))
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}
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func gzipList(list *api.PodList) ([]byte, error) {
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raw, err := runtime.Encode(api.Codecs.LegacyCodec(v1.SchemeGroupVersion), list)
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if err != nil {
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return nil, err
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}
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zipped := &bytes.Buffer{}
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zw := gzip.NewWriter(zipped)
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_, err = bytes.NewBuffer(raw).WriteTo(zw)
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if err != nil {
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return nil, err
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}
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err = zw.Close()
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if err != nil {
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return nil, err
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}
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return zipped.Bytes(), nil
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}
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func Gunzip(gzipped []byte) <-chan *api.Pod {
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return Stream(gunzipList(gzipped))
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}
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func gunzipList(gzipped []byte) (*api.PodList, error) {
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zr, err := gzip.NewReader(bytes.NewReader(gzipped))
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if err != nil {
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return nil, err
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}
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defer zr.Close()
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raw, err := ioutil.ReadAll(zr)
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if err != nil {
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return nil, err
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}
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obj, err := runtime.Decode(api.Codecs.UniversalDecoder(), raw)
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if err != nil {
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return nil, err
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}
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podlist, ok := obj.(*api.PodList)
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if !ok {
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return nil, fmt.Errorf("expected *api.PodList instead of %T", obj)
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}
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return podlist, nil
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}
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