mirror of
https://github.com/ceph/ceph-csi.git
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vendor cleanup: remove unused,non-go and test files
This commit is contained in:
Madhu Rajanna
238
vendor/k8s.io/kubernetes/pkg/kubelet/config/file.go
generated
vendored
238
vendor/k8s.io/kubernetes/pkg/kubelet/config/file.go
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vendored
@ -1,238 +0,0 @@
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/*
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Copyright 2016 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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// Reads the pod configuration from file or a directory of files.
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package config
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"time"
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"github.com/golang/glog"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/client-go/tools/cache"
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api "k8s.io/kubernetes/pkg/apis/core"
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kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
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)
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type podEventType int
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const (
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podAdd podEventType = iota
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podModify
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podDelete
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eventBufferLen = 10
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)
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type watchEvent struct {
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fileName string
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eventType podEventType
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}
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type sourceFile struct {
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path string
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nodeName types.NodeName
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period time.Duration
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store cache.Store
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fileKeyMapping map[string]string
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updates chan<- interface{}
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watchEvents chan *watchEvent
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}
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func NewSourceFile(path string, nodeName types.NodeName, period time.Duration, updates chan<- interface{}) {
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// "golang.org/x/exp/inotify" requires a path without trailing "/"
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path = strings.TrimRight(path, string(os.PathSeparator))
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config := newSourceFile(path, nodeName, period, updates)
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glog.V(1).Infof("Watching path %q", path)
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config.run()
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}
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func newSourceFile(path string, nodeName types.NodeName, period time.Duration, updates chan<- interface{}) *sourceFile {
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send := func(objs []interface{}) {
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var pods []*v1.Pod
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for _, o := range objs {
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pods = append(pods, o.(*v1.Pod))
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}
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updates <- kubetypes.PodUpdate{Pods: pods, Op: kubetypes.SET, Source: kubetypes.FileSource}
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}
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store := cache.NewUndeltaStore(send, cache.MetaNamespaceKeyFunc)
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return &sourceFile{
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path: path,
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nodeName: nodeName,
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period: period,
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store: store,
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fileKeyMapping: map[string]string{},
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updates: updates,
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watchEvents: make(chan *watchEvent, eventBufferLen),
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}
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}
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func (s *sourceFile) run() {
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listTicker := time.NewTicker(s.period)
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go func() {
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for {
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select {
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case <-listTicker.C:
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if err := s.listConfig(); err != nil {
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glog.Errorf("Unable to read config path %q: %v", s.path, err)
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}
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case e := <-s.watchEvents:
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if err := s.consumeWatchEvent(e); err != nil {
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glog.Errorf("Unable to process watch event: %v", err)
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}
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}
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}
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}()
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s.startWatch()
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}
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func (s *sourceFile) applyDefaults(pod *api.Pod, source string) error {
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return applyDefaults(pod, source, true, s.nodeName)
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}
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func (s *sourceFile) listConfig() error {
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path := s.path
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statInfo, err := os.Stat(path)
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if err != nil {
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if !os.IsNotExist(err) {
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return err
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}
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// Emit an update with an empty PodList to allow FileSource to be marked as seen
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s.updates <- kubetypes.PodUpdate{Pods: []*v1.Pod{}, Op: kubetypes.SET, Source: kubetypes.FileSource}
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return fmt.Errorf("path does not exist, ignoring")
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}
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switch {
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case statInfo.Mode().IsDir():
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pods, err := s.extractFromDir(path)
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if err != nil {
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return err
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}
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if len(pods) == 0 {
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// Emit an update with an empty PodList to allow FileSource to be marked as seen
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s.updates <- kubetypes.PodUpdate{Pods: pods, Op: kubetypes.SET, Source: kubetypes.FileSource}
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return nil
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}
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return s.replaceStore(pods...)
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case statInfo.Mode().IsRegular():
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pod, err := s.extractFromFile(path)
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if err != nil {
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return err
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}
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return s.replaceStore(pod)
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default:
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return fmt.Errorf("path is not a directory or file")
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}
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}
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// Get as many pod manifests as we can from a directory. Return an error if and only if something
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// prevented us from reading anything at all. Do not return an error if only some files
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// were problematic.
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func (s *sourceFile) extractFromDir(name string) ([]*v1.Pod, error) {
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dirents, err := filepath.Glob(filepath.Join(name, "[^.]*"))
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if err != nil {
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return nil, fmt.Errorf("glob failed: %v", err)
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}
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pods := make([]*v1.Pod, 0)
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if len(dirents) == 0 {
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return pods, nil
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}
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sort.Strings(dirents)
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for _, path := range dirents {
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statInfo, err := os.Stat(path)
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if err != nil {
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glog.Errorf("Can't get metadata for %q: %v", path, err)
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continue
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}
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switch {
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case statInfo.Mode().IsDir():
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glog.Errorf("Not recursing into manifest path %q", path)
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case statInfo.Mode().IsRegular():
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pod, err := s.extractFromFile(path)
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if err != nil {
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glog.Errorf("Can't process manifest file %q: %v", path, err)
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} else {
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pods = append(pods, pod)
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}
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default:
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glog.Errorf("Manifest path %q is not a directory or file: %v", path, statInfo.Mode())
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}
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}
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return pods, nil
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}
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func (s *sourceFile) extractFromFile(filename string) (pod *v1.Pod, err error) {
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glog.V(3).Infof("Reading config file %q", filename)
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defer func() {
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if err == nil && pod != nil {
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objKey, keyErr := cache.MetaNamespaceKeyFunc(pod)
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if keyErr != nil {
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err = keyErr
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return
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}
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s.fileKeyMapping[filename] = objKey
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}
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}()
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file, err := os.Open(filename)
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if err != nil {
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return pod, err
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}
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defer file.Close()
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data, err := ioutil.ReadAll(file)
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if err != nil {
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return pod, err
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}
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defaultFn := func(pod *api.Pod) error {
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return s.applyDefaults(pod, filename)
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}
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parsed, pod, podErr := tryDecodeSinglePod(data, defaultFn)
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if parsed {
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if podErr != nil {
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return pod, podErr
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}
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return pod, nil
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}
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return pod, fmt.Errorf("%v: couldn't parse as pod(%v), please check config file.\n", filename, podErr)
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}
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func (s *sourceFile) replaceStore(pods ...*v1.Pod) (err error) {
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objs := []interface{}{}
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for _, pod := range pods {
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objs = append(objs, pod)
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}
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return s.store.Replace(objs, "")
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}
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