| /* |
| Copyright 2015 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 app |
| |
| import ( |
| "golang.org/x/exp/inotify" |
| "k8s.io/klog" |
| ) |
| |
| func watchForLockfileContention(path string, done chan struct{}) error { |
| watcher, err := inotify.NewWatcher() |
| if err != nil { |
| klog.Errorf("unable to create watcher for lockfile: %v", err) |
| return err |
| } |
| if err = watcher.AddWatch(path, inotify.IN_OPEN|inotify.IN_DELETE_SELF); err != nil { |
| klog.Errorf("unable to watch lockfile: %v", err) |
| return err |
| } |
| go func() { |
| select { |
| case ev := <-watcher.Event: |
| klog.Infof("inotify event: %v", ev) |
| case err = <-watcher.Error: |
| klog.Errorf("inotify watcher error: %v", err) |
| } |
| close(done) |
| }() |
| return nil |
| } |