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https://github.com/k3s-io/k3s.git
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74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
/*
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Copyright 2017 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 flexvolume
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import (
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"fmt"
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"os"
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"k8s.io/klog"
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"k8s.io/kubernetes/pkg/util/mount"
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"k8s.io/kubernetes/pkg/volume"
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"k8s.io/utils/exec"
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)
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// FlexVolumeUnmounter is the disk that will be cleaned by this plugin.
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type flexVolumeUnmounter struct {
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*flexVolume
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// Runner used to teardown the volume.
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runner exec.Interface
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}
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var _ volume.Unmounter = &flexVolumeUnmounter{}
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// Unmounter interface
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func (f *flexVolumeUnmounter) TearDown() error {
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path := f.GetPath()
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return f.TearDownAt(path)
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}
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func (f *flexVolumeUnmounter) TearDownAt(dir string) error {
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pathExists, pathErr := mount.PathExists(dir)
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if pathErr != nil {
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// only log warning here since plugins should anyways have to deal with errors
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klog.Warningf("Error checking path: %v", pathErr)
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} else {
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if !pathExists {
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klog.Warningf("Warning: Unmount skipped because path does not exist: %v", dir)
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return nil
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}
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}
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call := f.plugin.NewDriverCall(unmountCmd)
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call.Append(dir)
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_, err := call.Run()
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if isCmdNotSupportedErr(err) {
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err = (*unmounterDefaults)(f).TearDownAt(dir)
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}
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if err != nil {
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return err
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}
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// Flexvolume driver may remove the directory. Ignore if it does.
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if pathExists, pathErr := mount.PathExists(dir); pathErr != nil {
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return fmt.Errorf("Error checking if path exists: %v", pathErr)
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} else if !pathExists {
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return nil
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}
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return os.Remove(dir)
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}
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